Move libmediandk and libcamera2ndk headers
Move libmediandk and libcamera2ndk headers into their module
and export them from there. Also move them to the same path
relative to the export as used in the NDK, media/ for
libmediandk and camera/ for libcamera2ndk.
Test: builds
Change-Id: I0b424e0e48bfb5e2b762694a97d799de08f5dda3
diff --git a/camera/ndk/Android.bp b/camera/ndk/Android.bp
index ade0d72..97cf6bf 100644
--- a/camera/ndk/Android.bp
+++ b/camera/ndk/Android.bp
@@ -22,3 +22,11 @@
first_version: "24",
unversioned_until: "current",
}
+
+ndk_headers {
+ name: "libcamera2ndk_headers",
+ from: "include/camera",
+ to: "camera",
+ srcs: ["include/camera/**/*.h"],
+ license: "NOTICE",
+}
diff --git a/camera/ndk/Android.mk b/camera/ndk/Android.mk
index 591dfc2..f5ff69d 100644
--- a/camera/ndk/Android.mk
+++ b/camera/ndk/Android.mk
@@ -33,9 +33,8 @@
LOCAL_MODULE:= libcamera2ndk
-LOCAL_C_INCLUDES := \
- frameworks/av/include/camera/ndk \
- frameworks/av/include/ndk
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
LOCAL_CFLAGS += -fvisibility=hidden -D EXPORT='__attribute__ ((visibility ("default")))'
LOCAL_CFLAGS += -Wall -Wextra -Werror
@@ -49,7 +48,8 @@
libcamera_client \
libstagefright_foundation \
libcutils \
- libcamera_metadata
+ libcamera_metadata \
+ libmediandk
include $(BUILD_SHARED_LIBRARY)
diff --git a/camera/ndk/NOTICE b/camera/ndk/NOTICE
new file mode 100644
index 0000000..152be20
--- /dev/null
+++ b/camera/ndk/NOTICE
@@ -0,0 +1,324 @@
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for the Android-specific code. ==
+ =========================================================================
+
+Android Code
+Copyright 2005-2008 The Android Open Source Project
+
+This product includes software developed as part of
+The Android Open Source Project (http://source.android.com).
+
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for Apache Commons code. ==
+ =========================================================================
+
+Apache Commons
+Copyright 1999-2006 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for Jakarta Commons Logging. ==
+ =========================================================================
+
+Jakarta Commons Logging (JCL)
+Copyright 2005,2006 The Apache Software Foundation.
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for the Nuance code. ==
+ =========================================================================
+
+These files are Copyright 2007 Nuance Communications, but released under
+the Apache2 License.
+
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for the Media Codecs code. ==
+ =========================================================================
+
+Media Codecs
+These files are Copyright 1998 - 2009 PacketVideo, but released under
+the Apache2 License.
+
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for the TagSoup code. ==
+ =========================================================================
+
+This file is part of TagSoup and is Copyright 2002-2008 by John Cowan.
+
+TagSoup is licensed under the Apache License,
+Version 2.0. You may obtain a copy of this license at
+http://www.apache.org/licenses/LICENSE-2.0 . You may also have
+additional legal rights not granted by this license.
+
+TagSoup is distributed in the hope that it will be useful, but
+unless required by applicable law or agreed to in writing, TagSoup
+is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
+OF ANY KIND, either express or implied; not even the implied warranty
+of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for Additional Codecs code. ==
+ =========================================================================
+
+Additional Codecs
+These files are Copyright 2003-2010 VisualOn, but released under
+the Apache2 License.
+
+ =========================================================================
+ == NOTICE file corresponding to the section 4 d of ==
+ == the Apache License, Version 2.0, ==
+ == in this case for the Audio Effects code. ==
+ =========================================================================
+
+Audio Effects
+These files are Copyright (C) 2004-2010 NXP Software and
+Copyright (C) 2010 The Android Open Source Project, but released under
+the Apache2 License.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
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+
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+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
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+ (d) If the Work includes a "NOTICE" text file as part of its
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+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
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+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+
+
+UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE
+
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+Copyright © 1991-2008 Unicode, Inc. All rights reserved. Distributed
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diff --git a/camera/ndk/NdkCameraCaptureSession.cpp b/camera/ndk/NdkCameraCaptureSession.cpp
index d6eff24..2a6b182 100644
--- a/camera/ndk/NdkCameraCaptureSession.cpp
+++ b/camera/ndk/NdkCameraCaptureSession.cpp
@@ -23,9 +23,9 @@
#include <utils/StrongPointer.h>
#include <utils/Trace.h>
-#include "NdkCameraDevice.h"
-#include <NdkCaptureRequest.h>
-#include <NdkCameraCaptureSession.h>
+#include <camera/NdkCameraDevice.h>
+#include <camera/NdkCaptureRequest.h>
+#include <camera/NdkCameraCaptureSession.h>
#include "impl/ACameraCaptureSession.h"
using namespace android;
diff --git a/camera/ndk/NdkCameraDevice.cpp b/camera/ndk/NdkCameraDevice.cpp
index 281d3e7..9f6d1f7 100644
--- a/camera/ndk/NdkCameraDevice.cpp
+++ b/camera/ndk/NdkCameraDevice.cpp
@@ -21,7 +21,7 @@
#include <utils/Log.h>
#include <utils/Trace.h>
-#include <NdkCameraDevice.h>
+#include <camera/NdkCameraDevice.h>
#include "impl/ACameraCaptureSession.h"
using namespace android;
diff --git a/camera/ndk/NdkCameraManager.cpp b/camera/ndk/NdkCameraManager.cpp
index ff15263..60b4763 100644
--- a/camera/ndk/NdkCameraManager.cpp
+++ b/camera/ndk/NdkCameraManager.cpp
@@ -21,7 +21,7 @@
#include <utils/Log.h>
#include <utils/Trace.h>
-#include <NdkCameraManager.h>
+#include <camera/NdkCameraManager.h>
#include "impl/ACameraManager.h"
using namespace android;
diff --git a/camera/ndk/NdkCameraMetadata.cpp b/camera/ndk/NdkCameraMetadata.cpp
index 85fe75b..65de81f 100644
--- a/camera/ndk/NdkCameraMetadata.cpp
+++ b/camera/ndk/NdkCameraMetadata.cpp
@@ -21,7 +21,7 @@
#include <utils/Log.h>
#include <utils/Trace.h>
-#include "NdkCameraMetadata.h"
+#include <camera/NdkCameraMetadata.h>
#include "impl/ACameraMetadata.h"
using namespace android;
diff --git a/camera/ndk/NdkCaptureRequest.cpp b/camera/ndk/NdkCaptureRequest.cpp
index 7c37955..5b4c180 100644
--- a/camera/ndk/NdkCaptureRequest.cpp
+++ b/camera/ndk/NdkCaptureRequest.cpp
@@ -21,7 +21,7 @@
#include <utils/Log.h>
#include <utils/Trace.h>
-#include "NdkCaptureRequest.h"
+#include <camera/NdkCaptureRequest.h>
#include "impl/ACameraMetadata.h"
#include "impl/ACaptureRequest.h"
diff --git a/camera/ndk/impl/ACameraCaptureSession.h b/camera/ndk/impl/ACameraCaptureSession.h
index f56219c..339c665 100644
--- a/camera/ndk/impl/ACameraCaptureSession.h
+++ b/camera/ndk/impl/ACameraCaptureSession.h
@@ -18,7 +18,7 @@
#include <set>
#include <hardware/camera3.h>
-#include <NdkCameraDevice.h>
+#include <camera/NdkCameraDevice.h>
#include "ACameraDevice.h"
using namespace android;
diff --git a/camera/ndk/impl/ACameraDevice.h b/camera/ndk/impl/ACameraDevice.h
index eb8028b..c566cd2 100644
--- a/camera/ndk/impl/ACameraDevice.h
+++ b/camera/ndk/impl/ACameraDevice.h
@@ -36,7 +36,7 @@
#include <camera/camera2/OutputConfiguration.h>
#include <camera/camera2/CaptureRequest.h>
-#include <NdkCameraDevice.h>
+#include <camera/NdkCameraDevice.h>
#include "ACameraMetadata.h"
namespace android {
diff --git a/camera/ndk/impl/ACameraManager.h b/camera/ndk/impl/ACameraManager.h
index 97e4fd9..4a172f3 100644
--- a/camera/ndk/impl/ACameraManager.h
+++ b/camera/ndk/impl/ACameraManager.h
@@ -17,7 +17,7 @@
#ifndef _ACAMERA_MANAGER_H
#define _ACAMERA_MANAGER_H
-#include "NdkCameraManager.h"
+#include <camera/NdkCameraManager.h>
#include <android/hardware/ICameraService.h>
#include <android/hardware/BnCameraServiceListener.h>
diff --git a/camera/ndk/impl/ACameraMetadata.cpp b/camera/ndk/impl/ACameraMetadata.cpp
index c0da592..7b33c32 100644
--- a/camera/ndk/impl/ACameraMetadata.cpp
+++ b/camera/ndk/impl/ACameraMetadata.cpp
@@ -20,7 +20,7 @@
#include "ACameraMetadata.h"
#include <utils/Vector.h>
#include <system/graphics.h>
-#include "NdkImage.h"
+#include <media/NdkImage.h>
using namespace android;
diff --git a/camera/ndk/impl/ACameraMetadata.h b/camera/ndk/impl/ACameraMetadata.h
index 8d050c4..143efc7 100644
--- a/camera/ndk/impl/ACameraMetadata.h
+++ b/camera/ndk/impl/ACameraMetadata.h
@@ -24,7 +24,7 @@
#include <utils/Vector.h>
#include <camera/CameraMetadata.h>
-#include "NdkCameraMetadata.h"
+#include <camera/NdkCameraMetadata.h>
using namespace android;
diff --git a/camera/ndk/impl/ACaptureRequest.h b/camera/ndk/impl/ACaptureRequest.h
index 3ef6a84..e5b453e 100644
--- a/camera/ndk/impl/ACaptureRequest.h
+++ b/camera/ndk/impl/ACaptureRequest.h
@@ -16,7 +16,7 @@
#ifndef _ACAPTURE_REQUEST_H
#define _ACAPTURE_REQUEST_H
-#include "NdkCaptureRequest.h"
+#include <camera/NdkCaptureRequest.h>
#include <set>
using namespace android;
diff --git a/camera/ndk/include/camera/NdkCameraCaptureSession.h b/camera/ndk/include/camera/NdkCameraCaptureSession.h
new file mode 100644
index 0000000..d96f538
--- /dev/null
+++ b/camera/ndk/include/camera/NdkCameraCaptureSession.h
@@ -0,0 +1,598 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraCaptureSession.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+#include <sys/cdefs.h>
+
+#include <android/native_window.h>
+#include "NdkCameraError.h"
+#include "NdkCameraMetadata.h"
+
+#ifndef _NDK_CAMERA_CAPTURE_SESSION_H
+#define _NDK_CAMERA_CAPTURE_SESSION_H
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraCaptureSession is an opaque type that manages frame captures of a camera device.
+ *
+ * A pointer can be obtained using {@link ACameraDevice_createCaptureSession} method.
+ */
+typedef struct ACameraCaptureSession ACameraCaptureSession;
+
+/**
+ * The definition of camera capture session state callback.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraCaptureSession_stateCallbacks}.
+ * @param session The camera capture session whose state is changing.
+ */
+typedef void (*ACameraCaptureSession_stateCallback)(void* context, ACameraCaptureSession *session);
+
+typedef struct ACameraCaptureSession_stateCallbacks {
+ /// optional application context.
+ void* context;
+
+ /**
+ * This callback is called when the session is closed and deleted from memory.
+ *
+ * <p>A session is closed when {@link ACameraCaptureSession_close} is called, a new session
+ * is created by the parent camera device,
+ * or when the parent camera device is closed (either by the user closing the device,
+ * or due to a camera device disconnection or fatal error).</p>
+ *
+ * <p>Once this callback is called, all access to this ACameraCaptureSession object will cause
+ * a crash.</p>
+ */
+ ACameraCaptureSession_stateCallback onClosed;
+
+ /**
+ * This callback is called every time the session has no more capture requests to process.
+ *
+ * <p>This callback will be invoked any time the session finishes processing
+ * all of its active capture requests, and no repeating request or burst is set up.</p>
+ */
+ ACameraCaptureSession_stateCallback onReady;
+
+ /**
+ * This callback is called when the session starts actively processing capture requests.
+ *
+ * <p>If the session runs out of capture requests to process and calls {@link onReady},
+ * then this callback will be invoked again once new requests are submitted for capture.</p>
+ */
+ ACameraCaptureSession_stateCallback onActive;
+} ACameraCaptureSession_stateCallbacks;
+
+/// Enum for describing error reason in {@link ACameraCaptureFailure}
+enum {
+ /**
+ * The capture session has dropped this frame due to an
+ * {@link ACameraCaptureSession_abortCaptures} call.
+ */
+ CAPTURE_FAILURE_REASON_FLUSHED = 0,
+
+ /**
+ * The capture session has dropped this frame due to an error in the framework.
+ */
+ CAPTURE_FAILURE_REASON_ERROR
+};
+
+/// Struct to describe a capture failure
+typedef struct ACameraCaptureFailure {
+ /**
+ * The frame number associated with this failed capture.
+ *
+ * <p>Whenever a request has been processed, regardless of failed capture or success,
+ * it gets a unique frame number assigned to its future result/failed capture.</p>
+ *
+ * <p>This value monotonically increments, starting with 0,
+ * for every new result or failure; and the scope is the lifetime of the
+ * {@link ACameraDevice}.</p>
+ */
+ int64_t frameNumber;
+
+ /**
+ * Determine why the request was dropped, whether due to an error or to a user
+ * action.
+ *
+ * @see CAPTURE_FAILURE_REASON_ERROR
+ * @see CAPTURE_FAILURE_REASON_FLUSHED
+ */
+ int reason;
+
+ /**
+ * The sequence ID for this failed capture that was returned by the
+ * {@link ACameraCaptureSession_capture} or {@link ACameraCaptureSession_setRepeatingRequest}.
+ *
+ * <p>The sequence ID is a unique monotonically increasing value starting from 0,
+ * incremented every time a new group of requests is submitted to the ACameraDevice.</p>
+ */
+ int sequenceId;
+
+ /**
+ * Determine if the image was captured from the camera.
+ *
+ * <p>If the image was not captured, no image buffers will be available.
+ * If the image was captured, then image buffers may be available.</p>
+ *
+ */
+ bool wasImageCaptured;
+} ACameraCaptureFailure;
+
+/**
+ * The definition of camera capture start callback.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request that is starting. Note that this pointer points to a copy of
+ * capture request sent by application, so the address is different to what
+ * application sent but the content will match. This request will be freed by
+ * framework immediately after this callback returns.
+ * @param timestamp The timestamp when the capture is started. This timestmap will match
+ * {@link ACAMERA_SENSOR_TIMESTAMP} of the {@link ACameraMetadata} in
+ * {@link ACameraCaptureSession_captureCallbacks#onCaptureCompleted} callback.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_start)(
+ void* context, ACameraCaptureSession* session,
+ const ACaptureRequest* request, int64_t timestamp);
+
+/**
+ * The definition of camera capture progress/result callback.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request of interest. Note that this pointer points to a copy of
+ * capture request sent by application, so the address is different to what
+ * application sent but the content will match. This request will be freed by
+ * framework immediately after this callback returns.
+ * @param result The capture result metadata reported by camera device. The memory is managed by
+ * camera framework. Do not access this pointer after this callback returns.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_result)(
+ void* context, ACameraCaptureSession* session,
+ ACaptureRequest* request, const ACameraMetadata* result);
+
+/**
+ * The definition of camera capture failure callback.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request of interest. Note that this pointer points to a copy of
+ * capture request sent by application, so the address is different to what
+ * application sent but the content will match. This request will be freed by
+ * framework immediately after this callback returns.
+ * @param failure The {@link ACameraCaptureFailure} desribes the capture failure. The memory is
+ * managed by camera framework. Do not access this pointer after this callback
+ * returns.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_failed)(
+ void* context, ACameraCaptureSession* session,
+ ACaptureRequest* request, ACameraCaptureFailure* failure);
+
+/**
+ * The definition of camera sequence end callback.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param sequenceId The capture sequence ID of the finished sequence.
+ * @param frameNumber The frame number of the last frame of this sequence.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_sequenceEnd)(
+ void* context, ACameraCaptureSession* session,
+ int sequenceId, int64_t frameNumber);
+
+/**
+ * The definition of camera sequence aborted callback.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param sequenceId The capture sequence ID of the aborted sequence.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_sequenceAbort)(
+ void* context, ACameraCaptureSession* session,
+ int sequenceId);
+
+/**
+ * The definition of camera buffer lost callback.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request of interest. Note that this pointer points to a copy of
+ * capture request sent by application, so the address is different to what
+ * application sent but the content will match. This request will be freed by
+ * framework immediately after this callback returns.
+ * @param window The {@link ANativeWindow} that the lost buffer would have been sent to.
+ * @param frameNumber The frame number of the lost buffer.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_bufferLost)(
+ void* context, ACameraCaptureSession* session,
+ ACaptureRequest* request, ANativeWindow* window, int64_t frameNumber);
+
+typedef struct ACameraCaptureSession_captureCallbacks {
+ /// optional application context.
+ void* context;
+
+ /**
+ * This callback is called when the camera device has started capturing
+ * the output image for the request, at the beginning of image exposure.
+ *
+ * <p>This callback is invoked right as
+ * the capture of a frame begins, so it is the most appropriate time
+ * for playing a shutter sound, or triggering UI indicators of capture.</p>
+ *
+ * <p>The request that is being used for this capture is provided, along
+ * with the actual timestamp for the start of exposure.
+ * This timestamp matches the timestamps that will be
+ * included in {@link ACAMERA_SENSOR_TIMESTAMP} of the {@link ACameraMetadata} in
+ * {@link onCaptureCompleted} callback,
+ * and in the buffers sent to each output ANativeWindow. These buffer
+ * timestamps are accessible through, for example,
+ * {@link AImage_getTimestamp} or
+ * <a href="http://developer.android.com/reference/android/graphics/SurfaceTexture.html#getTimestamp()">
+ * android.graphics.SurfaceTexture#getTimestamp()</a>.</p>
+ *
+ * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+ * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+ *
+ */
+ ACameraCaptureSession_captureCallback_start onCaptureStarted;
+
+ /**
+ * This callback is called when an image capture makes partial forward progress; some
+ * (but not all) results from an image capture are available.
+ *
+ * <p>The result provided here will contain some subset of the fields of
+ * a full result. Multiple {@link onCaptureProgressed} calls may happen per
+ * capture; a given result field will only be present in one partial
+ * capture at most. The final {@link onCaptureCompleted} call will always
+ * contain all the fields (in particular, the union of all the fields of all
+ * the partial results composing the total result).</p>
+ *
+ * <p>For each request, some result data might be available earlier than others. The typical
+ * delay between each partial result (per request) is a single frame interval.
+ * For performance-oriented use-cases, applications should query the metadata they need
+ * to make forward progress from the partial results and avoid waiting for the completed
+ * result.</p>
+ *
+ * <p>For a particular request, {@link onCaptureProgressed} may happen before or after
+ * {@link onCaptureStarted}.</p>
+ *
+ * <p>Each request will generate at least `1` partial results, and at most
+ * {@link ACAMERA_REQUEST_PARTIAL_RESULT_COUNT} partial results.</p>
+ *
+ * <p>Depending on the request settings, the number of partial results per request
+ * will vary, although typically the partial count could be the same as long as the
+ * camera device subsystems enabled stay the same.</p>
+ *
+ * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+ * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+ */
+ ACameraCaptureSession_captureCallback_result onCaptureProgressed;
+
+ /**
+ * This callback is called when an image capture has fully completed and all the
+ * result metadata is available.
+ *
+ * <p>This callback will always fire after the last {@link onCaptureProgressed};
+ * in other words, no more partial results will be delivered once the completed result
+ * is available.</p>
+ *
+ * <p>For performance-intensive use-cases where latency is a factor, consider
+ * using {@link onCaptureProgressed} instead.</p>
+ *
+ * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+ * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+ */
+ ACameraCaptureSession_captureCallback_result onCaptureCompleted;
+
+ /**
+ * This callback is called instead of {@link onCaptureCompleted} when the
+ * camera device failed to produce a capture result for the
+ * request.
+ *
+ * <p>Other requests are unaffected, and some or all image buffers from
+ * the capture may have been pushed to their respective output
+ * streams.</p>
+ *
+ * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+ * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+ *
+ * @see ACameraCaptureFailure
+ */
+ ACameraCaptureSession_captureCallback_failed onCaptureFailed;
+
+ /**
+ * This callback is called independently of the others in {@link ACameraCaptureSession_captureCallbacks},
+ * when a capture sequence finishes and all capture result
+ * or capture failure for it have been returned via this {@link ACameraCaptureSession_captureCallbacks}.
+ *
+ * <p>In total, there will be at least one result/failure returned by this listener
+ * before this callback is invoked. If the capture sequence is aborted before any
+ * requests have been processed, {@link onCaptureSequenceAborted} is invoked instead.</p>
+ */
+ ACameraCaptureSession_captureCallback_sequenceEnd onCaptureSequenceCompleted;
+
+ /**
+ * This callback is called independently of the others in {@link ACameraCaptureSession_captureCallbacks},
+ * when a capture sequence aborts before any capture result
+ * or capture failure for it have been returned via this {@link ACameraCaptureSession_captureCallbacks}.
+ *
+ * <p>Due to the asynchronous nature of the camera device, not all submitted captures
+ * are immediately processed. It is possible to clear out the pending requests
+ * by a variety of operations such as {@link ACameraCaptureSession_stopRepeating} or
+ * {@link ACameraCaptureSession_abortCaptures}. When such an event happens,
+ * {@link onCaptureSequenceCompleted} will not be called.</p>
+ */
+ ACameraCaptureSession_captureCallback_sequenceAbort onCaptureSequenceAborted;
+
+ /**
+ * This callback is called if a single buffer for a capture could not be sent to its
+ * destination ANativeWindow.
+ *
+ * <p>If the whole capture failed, then {@link onCaptureFailed} will be called instead. If
+ * some but not all buffers were captured but the result metadata will not be available,
+ * then onCaptureFailed will be invoked with {@link ACameraCaptureFailure#wasImageCaptured}
+ * returning true, along with one or more calls to {@link onCaptureBufferLost} for the
+ * failed outputs.</p>
+ *
+ * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+ * submitted, but the contents the ACaptureRequest will match what application submitted.
+ * The ANativeWindow pointer will always match what application submitted in
+ * {@link ACameraDevice_createCaptureSession}</p>
+ *
+ */
+ ACameraCaptureSession_captureCallback_bufferLost onCaptureBufferLost;
+} ACameraCaptureSession_captureCallbacks;
+
+enum {
+ CAPTURE_SEQUENCE_ID_NONE = -1
+};
+
+/**
+ * Close this capture session.
+ *
+ * <p>Closing a session frees up the target output Surfaces of the session for reuse with either
+ * a new session, or to other APIs that can draw to Surfaces.</p>
+ *
+ * <p>Note that creating a new capture session with {@link ACameraDevice_createCaptureSession}
+ * will close any existing capture session automatically, and call the older session listener's
+ * {@link ACameraCaptureSession_stateCallbacks#onClosed} callback. Using
+ * {@link ACameraDevice_createCaptureSession} directly without closing is the recommended approach
+ * for quickly switching to a new session, since unchanged target outputs can be reused more
+ * efficiently.</p>
+ *
+ * <p>After a session is closed and before {@link ACameraCaptureSession_stateCallbacks#onClosed}
+ * is called, all methods invoked on the session will return {@link ACAMERA_ERROR_SESSION_CLOSED},
+ * and any repeating requests are stopped (as if {@link ACameraCaptureSession_stopRepeating} was
+ * called). However, any in-progress capture requests submitted to the session will be completed as
+ * normal; once all captures have completed and the session has been torn down,
+ * {@link ACameraCaptureSession_stateCallbacks#onClosed} callback will be called and the seesion
+ * will be removed from memory.</p>
+ *
+ * <p>Closing a session is idempotent; closing more than once has no effect.</p>
+ *
+ * @param session the capture session of interest
+ */
+void ACameraCaptureSession_close(ACameraCaptureSession* session);
+
+struct ACameraDevice;
+typedef struct ACameraDevice ACameraDevice;
+
+/**
+ * Get the ACameraDevice pointer associated with this capture session in the device argument
+ * if the method succeeds.
+ *
+ * @param session the capture session of interest
+ * @param device the {@link ACameraDevice} associated with session. Will be set to NULL
+ * if the session is closed or this method fails.
+ * @return <ul><li>
+ * {@link ACAMERA_OK} if the method call succeeds. The {@link ACameraDevice}
+ * will be stored in device argument</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session or device is NULL</li>
+ * <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ *
+ */
+camera_status_t ACameraCaptureSession_getDevice(
+ ACameraCaptureSession* session, /*out*/ACameraDevice** device);
+
+/**
+ * Submit an array of requests to be captured in sequence as a burst in the minimum of time possible.
+ *
+ * <p>The burst will be captured in the minimum amount of time possible, and will not be
+ * interleaved with requests submitted by other capture or repeat calls.</p>
+ *
+ * <p>Each capture produces one {@link ACameraMetadata} as a capture result and image buffers for
+ * one or more target {@link ANativeWindow}s. The target ANativeWindows (set with
+ * {@link ACaptureRequest_addTarget}) must be a subset of the ANativeWindow provided when
+ * this capture session was created.</p>
+ *
+ * @param session the capture session of interest
+ * @param callbacks the {@link ACameraCaptureSession_captureCallbacks} to be associated this capture
+ * sequence. No capture callback will be fired if this is set to NULL.
+ * @param numRequests number of requests in requests argument. Must be at least 1.
+ * @param requests an array of {@link ACaptureRequest} to be captured. Length must be at least
+ * numRequests.
+ * @param captureSequenceId the capture sequence ID associated with this capture method invocation
+ * will be stored here if this argument is not NULL and the method call succeeds.
+ * When this argument is set to NULL, the capture sequence ID will not be returned.
+ *
+ * @return <ul><li>
+ * {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ * if it is not NULL.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session or requests is NULL, or
+ * if numRequests < 1</li>
+ * <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_capture(
+ ACameraCaptureSession* session,
+ /*optional*/ACameraCaptureSession_captureCallbacks* callbacks,
+ int numRequests, ACaptureRequest** requests,
+ /*optional*/int* captureSequenceId);
+
+/**
+ * Request endlessly repeating capture of a sequence of images by this capture session.
+ *
+ * <p>With this method, the camera device will continually capture images,
+ * cycling through the settings in the provided list of
+ * {@link ACaptureRequest}, at the maximum rate possible.</p>
+ *
+ * <p>If a request is submitted through {@link ACameraCaptureSession_capture},
+ * the current repetition of the request list will be
+ * completed before the higher-priority request is handled. This guarantees
+ * that the application always receives a complete repeat burst captured in
+ * minimal time, instead of bursts interleaved with higher-priority
+ * captures, or incomplete captures.</p>
+ *
+ * <p>Repeating burst requests are a simple way for an application to
+ * maintain a preview or other continuous stream of frames where each
+ * request is different in a predicatable way, without having to continually
+ * submit requests through {@link ACameraCaptureSession_capture}.</p>
+ *
+ * <p>To stop the repeating capture, call {@link ACameraCaptureSession_stopRepeating}. Any
+ * ongoing burst will still be completed, however. Calling
+ * {@link ACameraCaptureSession_abortCaptures} will also clear the request.</p>
+ *
+ * <p>Calling this method will replace a previously-set repeating requests
+ * set up by this method, although any in-progress burst will be completed before the new repeat
+ * burst will be used.</p>
+ *
+ * @param session the capture session of interest
+ * @param callbacks the {@link ACameraCaptureSession_captureCallbacks} to be associated with this
+ * capture sequence. No capture callback will be fired if callbacks is set to NULL.
+ * @param numRequests number of requests in requests array. Must be at least 1.
+ * @param requests an array of {@link ACaptureRequest} to be captured. Length must be at least
+ * numRequests.
+ * @param captureSequenceId the capture sequence ID associated with this capture method invocation
+ * will be stored here if this argument is not NULL and the method call succeeds.
+ * When this argument is set to NULL, the capture sequence ID will not be returned.
+ *
+ * @return <ul><li>
+ * {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ * if it is not NULL.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session or requests is NULL, or
+ * if numRequests < 1</li>
+ * <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_setRepeatingRequest(
+ ACameraCaptureSession* session,
+ /*optional*/ACameraCaptureSession_captureCallbacks* callbacks,
+ int numRequests, ACaptureRequest** requests,
+ /*optional*/int* captureSequenceId);
+
+/**
+ * Cancel any ongoing repeating capture set by {@link ACameraCaptureSession_setRepeatingRequest}.
+ * Has no effect on requests submitted through {@link ACameraCaptureSession_capture}.
+ *
+ * <p>Any currently in-flight captures will still complete, as will any burst that is
+ * mid-capture. To ensure that the device has finished processing all of its capture requests
+ * and is in ready state, wait for the {@link ACameraCaptureSession_stateCallbacks#onReady} callback
+ * after calling this method.</p>
+ *
+ * @param session the capture session of interest
+ *
+ * @return <ul><li>
+ * {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ * if it is not NULL.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_stopRepeating(ACameraCaptureSession* session);
+
+/**
+ * Discard all captures currently pending and in-progress as fast as possible.
+ *
+ * <p>The camera device will discard all of its current work as fast as possible. Some in-flight
+ * captures may complete successfully and call
+ * {@link ACameraCaptureSession_captureCallbacks#onCaptureCompleted},
+ * while others will trigger their {@link ACameraCaptureSession_captureCallbacks#onCaptureFailed}
+ * callbacks. If a repeating request list is set, it will be cleared.</p>
+ *
+ * <p>This method is the fastest way to switch the camera device to a new session with
+ * {@link ACameraDevice_createCaptureSession}, at the cost of discarding in-progress
+ * work. It must be called before the new session is created. Once all pending requests are
+ * either completed or thrown away, the {@link ACameraCaptureSession_stateCallbacks#onReady}
+ * callback will be called, if the session has not been closed. Otherwise, the
+ * {@link ACameraCaptureSession_stateCallbacks#onClosed}
+ * callback will be fired when a new session is created by the camera device and the previous
+ * session is being removed from memory.</p>
+ *
+ * <p>Cancelling will introduce at least a brief pause in the stream of data from the camera
+ * device, since once the camera device is emptied, the first new request has to make it through
+ * the entire camera pipeline before new output buffers are produced.</p>
+ *
+ * <p>This means that using ACameraCaptureSession_abortCaptures to simply remove pending requests is
+ * not recommended; it's best used for quickly switching output configurations, or for cancelling
+ * long in-progress requests (such as a multi-second capture).</p>
+ *
+ * @param session the capture session of interest
+ *
+ * @return <ul><li>
+ * {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ * if it is not NULL.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_abortCaptures(ACameraCaptureSession* session);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_CAPTURE_SESSION_H */
+
+/** @} */
diff --git a/camera/ndk/include/camera/NdkCameraDevice.h b/camera/ndk/include/camera/NdkCameraDevice.h
new file mode 100644
index 0000000..9b7f6f4
--- /dev/null
+++ b/camera/ndk/include/camera/NdkCameraDevice.h
@@ -0,0 +1,669 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraDevice.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+#include <sys/cdefs.h>
+
+#include <android/native_window.h>
+#include "NdkCameraError.h"
+#include "NdkCaptureRequest.h"
+#include "NdkCameraCaptureSession.h"
+
+#ifndef _NDK_CAMERA_DEVICE_H
+#define _NDK_CAMERA_DEVICE_H
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraDevice is opaque type that provides access to a camera device.
+ *
+ * A pointer can be obtained using {@link ACameraManager_openCamera} method.
+ */
+typedef struct ACameraDevice ACameraDevice;
+
+/// Enum for ACameraDevice_ErrorStateCallback error code
+enum {
+ /**
+ * The camera device is in use already.
+ */
+ ERROR_CAMERA_IN_USE = 1,
+
+ /**
+ * The system-wide limit for number of open cameras or camera resources has
+ * been reached, and more camera devices cannot be opened until previous
+ * instances are closed.
+ */
+ ERROR_MAX_CAMERAS_IN_USE = 2,
+
+ /**
+ * The camera is disabled due to a device policy, and cannot be opened.
+ */
+ ERROR_CAMERA_DISABLED = 3,
+
+ /**
+ * The camera device has encountered a fatal error.
+ * <p>The camera device needs to be re-opened to be used again.</p>
+ */
+ ERROR_CAMERA_DEVICE = 4,
+
+ /**
+ * The camera service has encountered a fatal error.
+ * <p>The Android device may need to be shut down and restarted to restore
+ * camera function, or there may be a persistent hardware problem.
+ * An attempt at recovery may be possible by closing the
+ * CameraDevice and the CameraManager, and trying to acquire all resources
+ * again from scratch.</p>
+ */
+ ERROR_CAMERA_SERVICE = 5
+};
+
+/**
+ * Camera device state callbacks to be used in {@link ACameraDevice_stateCallbacks}.
+ *
+ * @param context The optional context in {@link ACameraDevice_stateCallbacks} will be
+ * passed to this callback.
+ * @param device The {@link ACameraDevice} that is being disconnected.
+ */
+typedef void (*ACameraDevice_StateCallback)(void* context, ACameraDevice* device);
+
+/**
+ * Camera device error state callbacks to be used in {@link ACameraDevice_stateCallbacks}.
+ *
+ * @param context The optional context in {@link ACameraDevice_stateCallbacks} will be
+ * passed to this callback.
+ * @param device The {@link ACameraDevice} that is being disconnected.
+ * @param error The error code describes the cause of this error callback. See the folowing
+ * links for more detail.
+ *
+ * @see ERROR_CAMERA_IN_USE
+ * @see ERROR_MAX_CAMERAS_IN_USE
+ * @see ERROR_CAMERA_DISABLED
+ * @see ERROR_CAMERA_DEVICE
+ * @see ERROR_CAMERA_SERVICE
+ */
+typedef void (*ACameraDevice_ErrorStateCallback)(void* context, ACameraDevice* device, int error);
+
+typedef struct ACameraDevice_StateCallbacks {
+ /// optional application context.
+ void* context;
+
+ /**
+ * The function is called when a camera device is no longer available for use.
+ *
+ * <p>Any attempt to call API methods on this ACameraDevice will return
+ * {@link ACAMERA_ERROR_CAMERA_DISCONNECTED}. The disconnection could be due to a
+ * change in security policy or permissions; the physical disconnection
+ * of a removable camera device; or the camera being needed for a
+ * higher-priority camera API client.</p>
+ *
+ * <p>Application should clean up the camera with {@link ACameraDevice_close} after
+ * this happens, as it is not recoverable until the camera can be opened
+ * again.</p>
+ *
+ */
+ ACameraDevice_StateCallback onDisconnected;
+
+ /**
+ * The function called when a camera device has encountered a serious error.
+ *
+ * <p>This indicates a failure of the camera device or camera service in some way.
+ * Any attempt to call API methods on this ACameraDevice in the future will return
+ * {@link ACAMERA_ERROR_CAMERA_DISCONNECTED}.</p>
+ *
+ * <p>There may still be capture completion or camera stream callbacks that will be called
+ * after this error is received.</p>
+ *
+ * <p>Application should clean up the camera with {@link ACameraDevice_close} after this
+ * happens. Further attempts at recovery are error-code specific.</p>
+ *
+ */
+ ACameraDevice_ErrorStateCallback onError;
+} ACameraDevice_stateCallbacks;
+
+/**
+ * Close the connection and free this ACameraDevice synchronously. Access to the ACameraDevice
+ * after calling this method will cause a crash.
+ *
+ * <p>After this call, all calls to the active ACameraCaptureSession associated to this
+ * ACameraDevice will return {@link ACAMERA_ERROR_SESSION_CLOSED} except for calls to
+ * {@link ACameraCaptureSession_close}.</p>
+ *
+ * <p>This method will stop all repeating captures sent via
+ * {@link ACameraCaptureSession_setRepeatingRequest} and block until all capture requests sent via
+ * {@link ACameraCaptureSession_capture} is complete. Once the method returns, the camera device
+ * will be removed from memory and access to the closed camera device pointer will cause a crash.</p>
+ *
+ * @param device the camera device to be closed
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if device is NULL.</li></ul>
+ */
+camera_status_t ACameraDevice_close(ACameraDevice* device);
+
+/**
+ * Return the camera id associated with this camera device.
+ *
+ * @param device the camera device to be closed
+ *
+ * @return camera ID string. The returned string is managed by framework and should not be
+ * delete/free by the application. Also the returned string must not be used after the device
+ * has been closed.
+ */
+const char* ACameraDevice_getId(const ACameraDevice* device);
+
+typedef enum {
+ /**
+ * Create a request suitable for a camera preview window. Specifically, this
+ * means that high frame rate is given priority over the highest-quality
+ * post-processing. These requests would normally be used with the
+ * {@link ACameraCaptureSession_setRepeatingRequest} method.
+ * This template is guaranteed to be supported on all camera devices.
+ *
+ * @see ACameraDevice_createCaptureRequest
+ */
+ TEMPLATE_PREVIEW = 1,
+
+ /**
+ * Create a request suitable for still image capture. Specifically, this
+ * means prioritizing image quality over frame rate. These requests would
+ * commonly be used with the {@link ACameraCaptureSession_capture} method.
+ * This template is guaranteed to be supported on all camera devices.
+ *
+ * @see ACameraDevice_createCaptureRequest
+ */
+ TEMPLATE_STILL_CAPTURE = 2,
+
+ /**
+ * Create a request suitable for video recording. Specifically, this means
+ * that a stable frame rate is used, and post-processing is set for
+ * recording quality. These requests would commonly be used with the
+ * {@link ACameraCaptureSession_setRepeatingRequest} method.
+ * This template is guaranteed to be supported on all camera devices.
+ *
+ * @see ACameraDevice_createCaptureRequest
+ */
+ TEMPLATE_RECORD = 3,
+
+ /**
+ * Create a request suitable for still image capture while recording
+ * video. Specifically, this means maximizing image quality without
+ * disrupting the ongoing recording. These requests would commonly be used
+ * with the {@link ACameraCaptureSession_capture} method while a request based on
+ * {@link TEMPLATE_RECORD} is is in use with {@link ACameraCaptureSession_setRepeatingRequest}.
+ * This template is guaranteed to be supported on all camera devices.
+ *
+ * @see ACameraDevice_createCaptureRequest
+ */
+ TEMPLATE_VIDEO_SNAPSHOT = 4,
+
+ /**
+ * Create a request suitable for zero shutter lag still capture. This means
+ * means maximizing image quality without compromising preview frame rate.
+ * AE/AWB/AF should be on auto mode.
+ *
+ * @see ACameraDevice_createCaptureRequest
+ */
+ TEMPLATE_ZERO_SHUTTER_LAG = 5,
+
+ /**
+ * A basic template for direct application control of capture
+ * parameters. All automatic control is disabled (auto-exposure, auto-white
+ * balance, auto-focus), and post-processing parameters are set to preview
+ * quality. The manual capture parameters (exposure, sensitivity, and so on)
+ * are set to reasonable defaults, but should be overriden by the
+ * application depending on the intended use case.
+ * This template is guaranteed to be supported on camera devices that support the
+ * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR} capability.
+ *
+ * @see ACameraDevice_createCaptureRequest
+ */
+ TEMPLATE_MANUAL = 6,
+} ACameraDevice_request_template;
+
+/**
+ * Create a ACaptureRequest for capturing images, initialized with template
+ * for a target use case.
+ *
+ * <p>The settings are chosen to be the best options for this camera device,
+ * so it is not recommended to reuse the same request for a different camera device.</p>
+ *
+ * @param device the camera device of interest
+ * @param templateId the type of capture request to be created.
+ * See {@link ACameraDevice_request_template}.
+ * @param request the output request will be stored here if the method call succeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds. The created capture request will be
+ * filled in request argument.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if device or request is NULL, templateId
+ * is undefined or camera device does not support requested template.
+ * </li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error.</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ *
+ * @see TEMPLATE_PREVIEW
+ * @see TEMPLATE_RECORD
+ * @see TEMPLATE_STILL_CAPTURE
+ * @see TEMPLATE_VIDEO_SNAPSHOT
+ * @see TEMPLATE_MANUAL
+ */
+camera_status_t ACameraDevice_createCaptureRequest(
+ const ACameraDevice* device, ACameraDevice_request_template templateId,
+ /*out*/ACaptureRequest** request);
+
+
+typedef struct ACaptureSessionOutputContainer ACaptureSessionOutputContainer;
+
+typedef struct ACaptureSessionOutput ACaptureSessionOutput;
+
+/**
+ * Create a capture session output container.
+ *
+ * <p>The container is used in {@link ACameraDevice_createCaptureSession} method to create a capture
+ * session. Use {@link ACaptureSessionOutputContainer_free} to free the container and its memory
+ * after application no longer needs the ACaptureSessionOutputContainer.</p>
+ *
+ * @param container the output {@link ACaptureSessionOutputContainer} will be stored here if the
+ * method call succeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds. The created container will be
+ * filled in container argument.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if container is NULL.</li></ul>
+ */
+camera_status_t ACaptureSessionOutputContainer_create(
+ /*out*/ACaptureSessionOutputContainer** container);
+
+/**
+ * Free a capture session output container.
+ *
+ * @param container the {@link ACaptureSessionOutputContainer} to be freed.
+ *
+ * @see ACaptureSessionOutputContainer_create
+ */
+void ACaptureSessionOutputContainer_free(ACaptureSessionOutputContainer* container);
+
+/**
+ * Create a ACaptureSessionOutput object.
+ *
+ * <p>The ACaptureSessionOutput is used in {@link ACaptureSessionOutputContainer_add} method to add
+ * an output {@link ANativeWindow} to ACaptureSessionOutputContainer. Use
+ * {@link ACaptureSessionOutput_free} to free the object and its memory after application no longer
+ * needs the {@link ACaptureSessionOutput}.</p>
+ *
+ * @param anw the {@link ANativeWindow} to be associated with the {@link ACaptureSessionOutput}
+ * @param output the output {@link ACaptureSessionOutput} will be stored here if the
+ * method call succeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds. The created container will be
+ * filled in the output argument.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if anw or output is NULL.</li></ul>
+ *
+ * @see ACaptureSessionOutputContainer_add
+ */
+camera_status_t ACaptureSessionOutput_create(
+ ANativeWindow* anw, /*out*/ACaptureSessionOutput** output);
+
+/**
+ * Free a ACaptureSessionOutput object.
+ *
+ * @param output the {@link ACaptureSessionOutput} to be freed.
+ *
+ * @see ACaptureSessionOutput_create
+ */
+void ACaptureSessionOutput_free(ACaptureSessionOutput* output);
+
+/**
+ * Add an {@link ACaptureSessionOutput} object to {@link ACaptureSessionOutputContainer}.
+ *
+ * @param container the {@link ACaptureSessionOutputContainer} of interest.
+ * @param output the output {@link ACaptureSessionOutput} to be added to container.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if container or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureSessionOutputContainer_add(
+ ACaptureSessionOutputContainer* container, const ACaptureSessionOutput* output);
+
+/**
+ * Remove an {@link ACaptureSessionOutput} object from {@link ACaptureSessionOutputContainer}.
+ *
+ * <p>This method has no effect if the ACaptureSessionOutput does not exist in
+ * ACaptureSessionOutputContainer.</p>
+ *
+ * @param container the {@link ACaptureSessionOutputContainer} of interest.
+ * @param output the output {@link ACaptureSessionOutput} to be removed from container.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if container or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureSessionOutputContainer_remove(
+ ACaptureSessionOutputContainer* container, const ACaptureSessionOutput* output);
+
+/**
+ * Create a new camera capture session by providing the target output set of {@link ANativeWindow}
+ * to the camera device.
+ *
+ * <p>If there is a preexisting session, the previous session will be closed
+ * automatically. However, app still needs to call {@link ACameraCaptureSession_close} on previous
+ * session. Otherwise the resources held by previous session will NOT be freed.</p>
+ *
+ * <p>The active capture session determines the set of potential output {@link ANativeWindow}s for
+ * the camera device for each capture request. A given request may use all
+ * or only some of the outputs. Once the ACameraCaptureSession is created, requests can be
+ * submitted with {@link ACameraCaptureSession_capture} or
+ * {@link ACameraCaptureSession_setRepeatingRequest}.</p>
+ *
+ * <p>Often the {@link ANativeWindow} used with this method can be obtained from a <a href=
+ * "http://developer.android.com/reference/android/view/Surface.html">Surface</a> java object by
+ * {@link ANativeWindow_fromSurface} NDK method. Surfaces or ANativeWindow suitable for inclusion as a camera
+ * output can be created for various use cases and targets:</p>
+ *
+ * <ul>
+ *
+ * <li>For drawing to a
+ * <a href="http://developer.android.com/reference/android/view/SurfaceView.html">SurfaceView</a>:
+ * Once the SurfaceView's Surface is created, set the size
+ * of the Surface with
+ * <a href="http://developer.android.com/reference/android/view/SurfaceHolder.html#setFixedSize(int, int)">
+ * android.view.SurfaceHolder\#setFixedSize</a> to be one of the PRIVATE output sizes
+ * returned by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}
+ * and then obtain the Surface by calling <a href=
+ * "http://developer.android.com/reference/android/view/SurfaceHolder.html#getSurface()">
+ * android.view.SurfaceHolder\#getSurface</a>. If the size is not set by the application, it will
+ * be rounded to the nearest supported size less than 1080p, by the camera device.</li>
+ *
+ * <li>For accessing through an OpenGL texture via a <a href=
+ * "http://developer.android.com/reference/android/graphics/SurfaceTexture.html">SurfaceTexture</a>:
+ * Set the size of the SurfaceTexture with <a href=
+ * "http://developer.android.com/reference/android/graphics/SurfaceTexture.html#setDefaultBufferSize(int, int)">
+ * setDefaultBufferSize</a> to be one of the PRIVATE output sizes
+ * returned by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}
+ * before creating a Surface from the SurfaceTexture with <a href=
+ * "http://developer.android.com/reference/android/view/Surface.html#Surface(android.graphics.SurfaceTexture)">
+ * Surface\#Surface(SurfaceTextrue)</a>. If the size is not set by the application, it will be set to be the
+ * smallest supported size less than 1080p, by the camera device.</li>
+ *
+ * <li>For recording with <a href=
+ * "http://developer.android.com/reference/android/media/MediaCodec.html">
+ * MediaCodec</a>: Call
+ * <a href=
+ * "http://developer.android.com/reference/android/media/MediaCodec.html#createInputSurface()">
+ * android.media.MediaCodec\#createInputSurface</a> after configuring
+ * the media codec to use one of the PRIVATE output sizes
+ * returned by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}.
+ * </li>
+ *
+ * <li>For recording with <a href=
+ * "http://developer.android.com/reference/android/media/MediaRecorder.html">
+ * MediaRecorder</a>: Call
+ * <a href="http://developer.android.com/reference/android/media/MediaRecorder.html#getSurface()">
+ * android.media.MediaRecorder\#getSurface</a> after configuring the media recorder to use
+ * one of the PRIVATE output sizes returned by
+ * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}, or configuring it to use one of the supported
+ * <a href="http://developer.android.com/reference/android/media/CamcorderProfile.html">
+ * CamcorderProfiles</a>.</li>
+ *
+ * <li>For efficient YUV processing with <a href=
+ * "http://developer.android.com/reference/android/renderscript/package-summary.html">
+ * RenderScript</a>:
+ * Create a RenderScript
+ * <a href="http://developer.android.com/reference/android/renderscript/Allocation.html">
+ * Allocation</a> with a supported YUV
+ * type, the IO_INPUT flag, and one of the YUV output sizes returned by
+ * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS},
+ * Then obtain the Surface with
+ * <a href="http://developer.android.com/reference/android/renderscript/Allocation.html#getSurface()">
+ * Allocation#getSurface}</a>.</li>
+ *
+ * <li>For access to RAW, uncompressed YUV, or compressed JPEG data in the application: Create an
+ * {@link AImageReader} object using the {@link AImageReader_new} method with one of the supported
+ * output formats given by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}. Then obtain a
+ * ANativeWindow from it with {@link AImageReader_getWindow}.
+ * If the AImageReader size is not set to a supported size, it will be rounded to a supported
+ * size less than 1080p by the camera device.
+ * </li>
+ *
+ * </ul>
+ *
+ * <p>The camera device will query each ANativeWindow's size and formats upon this
+ * call, so they must be set to a valid setting at this time.</p>
+ *
+ * <p>It can take several hundred milliseconds for the session's configuration to complete,
+ * since camera hardware may need to be powered on or reconfigured.</p>
+ *
+ * <p>If a prior ACameraCaptureSession already exists when this method is called, the previous
+ * session will no longer be able to accept new capture requests and will be closed. Any
+ * in-progress capture requests made on the prior session will be completed before it's closed.
+ * To minimize the transition time,
+ * the ACameraCaptureSession_abortCaptures method can be used to discard the remaining
+ * requests for the prior capture session before a new one is created. Note that once the new
+ * session is created, the old one can no longer have its captures aborted.</p>
+ *
+ * <p>Using larger resolution outputs, or more outputs, can result in slower
+ * output rate from the device.</p>
+ *
+ * <p>Configuring a session with an empty list will close the current session, if
+ * any. This can be used to release the current session's target surfaces for another use.</p>
+ *
+ * <p>While any of the sizes from {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} can be used when
+ * a single output stream is configured, a given camera device may not be able to support all
+ * combination of sizes, formats, and targets when multiple outputs are configured at once. The
+ * tables below list the maximum guaranteed resolutions for combinations of streams and targets,
+ * given the capabilities of the camera device.</p>
+ *
+ * <p>If an application tries to create a session using a set of targets that exceed the limits
+ * described in the below tables, one of three possibilities may occur. First, the session may
+ * be successfully created and work normally. Second, the session may be successfully created,
+ * but the camera device won't meet the frame rate guarantees as described in
+ * {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}. Or third, if the output set
+ * cannot be used at all, session creation will fail entirely, with
+ * {@link ACAMERA_ERROR_STREAM_CONFIGURE_FAIL} being returned.</p>
+ *
+ * <p>For the type column `PRIV` refers to output format {@link AIMAGE_FORMAT_PRIVATE},
+ * `YUV` refers to output format {@link AIMAGE_FORMAT_YUV_420_888},
+ * `JPEG` refers to output format {@link AIMAGE_FORMAT_JPEG},
+ * and `RAW` refers to output format {@link AIMAGE_FORMAT_RAW16}
+ *
+ *
+ * <p>For the maximum size column, `PREVIEW` refers to the best size match to the
+ * device's screen resolution, or to 1080p `(1920x1080)`, whichever is
+ * smaller. `RECORD` refers to the camera device's maximum supported recording resolution,
+ * as determined by <a href="http://developer.android.com/reference/android/media/CamcorderProfile.html">
+ * android.media.CamcorderProfiles</a>. And `MAXIMUM` refers to the
+ * camera device's maximum output resolution for that format or target from
+ * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}.</p>
+ *
+ * <p>To use these tables, determine the number and the formats/targets of outputs needed, and
+ * find the row(s) of the table with those targets. The sizes indicate the maximum set of sizes
+ * that can be used; it is guaranteed that for those targets, the listed sizes and anything
+ * smaller from the list given by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} can be
+ * successfully used to create a session. For example, if a row indicates that a 8 megapixel
+ * (MP) YUV_420_888 output can be used together with a 2 MP `PRIV` output, then a session
+ * can be created with targets `[8 MP YUV, 2 MP PRIV]` or targets `[2 MP YUV, 2 MP PRIV]`;
+ * but a session with targets `[8 MP YUV, 4 MP PRIV]`, targets `[4 MP YUV, 4 MP PRIV]`,
+ * or targets `[8 MP PRIV, 2 MP YUV]` would not be guaranteed to work, unless
+ * some other row of the table lists such a combination.</p>
+ *
+ * <p>Legacy devices ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY}) support at
+ * least the following stream combinations:
+ *
+ * <table>
+ * <tr><th colspan="7">LEGACY-level guaranteed configurations</th></tr>
+ * <tr> <th colspan="2" id="rb">Target 1</th> <th colspan="2" id="rb">Target 2</th> <th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr> <th>Type</th><th id="rb">Max size</th> <th>Type</th><th id="rb">Max size</th> <th>Type</th><th id="rb">Max size</th></tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>Simple preview, GPU video processing, or no-preview video recording.</td> </tr>
+ * <tr> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>No-viewfinder still image capture.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>In-application video/image processing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Standard still imaging.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>In-app processing plus still capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td colspan="2" id="rb"></td> <td>Standard recording.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td colspan="2" id="rb"></td> <td>Preview plus in-app processing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>Still capture plus in-app processing.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>Limited-level ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED}) devices
+ * support at least the following stream combinations in addition to those for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY} devices:
+ *
+ * <table>
+ * <tr><th colspan="7">LIMITED-level additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th></tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`RECORD `</td> <td colspan="2" id="rb"></td> <td>High-resolution video recording with preview.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`RECORD `</td> <td colspan="2" id="rb"></td> <td>High-resolution in-app video processing with preview.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`RECORD `</td> <td colspan="2" id="rb"></td> <td>Two-input in-app video processing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`RECORD `</td> <td>`JPEG`</td><td id="rb">`RECORD `</td> <td>High-resolution recording with video snapshot.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`RECORD `</td> <td>`JPEG`</td><td id="rb">`RECORD `</td> <td>High-resolution in-app processing with video snapshot.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>Two-input in-app processing with still capture.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>FULL-level ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL}) devices
+ * support at least the following stream combinations in addition to those for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices:
+ *
+ * <table>
+ * <tr><th colspan="7">FULL-level additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution GPU processing with preview.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution in-app processing with preview.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution two-input in-app processsing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>Video recording with maximum-size video snapshot</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`640x480`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Standard video recording plus maximum-resolution in-app processing.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`640x480`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Preview plus two-input maximum-resolution in-app processing.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>RAW-capability ({@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES} includes
+ * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_RAW RAW}) devices additionally support
+ * at least the following stream combinations on both
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL} and
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices:
+ *
+ * <table>
+ * <tr><th colspan="7">RAW-capability additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>No-preview DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Standard DNG capture.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>In-app processing plus DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Video recording with DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Preview with in-app processing and DNG capture.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Two-input in-app processing plus DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Still capture with simultaneous JPEG and DNG.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>In-app processing with simultaneous JPEG and DNG.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>BURST-capability ({@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES} includes
+ * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE BURST_CAPTURE}) devices
+ * support at least the below stream combinations in addition to those for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices. Note that all
+ * FULL-level devices support the BURST capability, and the below list is a strict subset of the
+ * list for FULL-level devices, so this table is only relevant for LIMITED-level devices that
+ * support the BURST_CAPTURE capability.
+ *
+ * <table>
+ * <tr><th colspan="5">BURST-capability additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`MAXIMUM`</td> <td>Maximum-resolution GPU processing with preview.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Maximum-resolution in-app processing with preview.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Maximum-resolution two-input in-app processsing.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>LEVEL-3 ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_3 LEVEL_3})
+ * support at least the following stream combinations in addition to the combinations for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL} and for
+ * RAW capability ({@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES} includes
+ * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_RAW RAW}):
+ *
+ * <table>
+ * <tr><th colspan="11">LEVEL-3 additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th><th colspan="2" id="rb">Target 4</th><th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`640x480`</td> <td>`YUV`</td><td id="rb">`MAXIMUM`</td> <td>`RAW`</td><td id="rb">`MAXIMUM`</td> <td>In-app viewfinder analysis with dynamic selection of output format.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`640x480`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>`RAW`</td><td id="rb">`MAXIMUM`</td> <td>In-app viewfinder analysis with dynamic selection of output format.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>Since the capabilities of camera devices vary greatly, a given camera device may support
+ * target combinations with sizes outside of these guarantees, but this can only be tested for
+ * by attempting to create a session with such targets.</p>
+ *
+ * @param device the camera device of interest.
+ * @param outputs the {@link ACaptureSessionOutputContainer} describes all output streams.
+ * @param callbacks the {@link ACameraCaptureSession_stateCallbacks capture session state callbacks}.
+ * @param session the created {@link ACameraCaptureSession} will be filled here if the method call
+ * succeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds. The created capture session will be
+ * filled in session argument.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if any of device, outputs, callbacks or
+ * session is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error.</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraDevice_createCaptureSession(
+ ACameraDevice* device,
+ const ACaptureSessionOutputContainer* outputs,
+ const ACameraCaptureSession_stateCallbacks* callbacks,
+ /*out*/ACameraCaptureSession** session);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_DEVICE_H */
+
+/** @} */
+
diff --git a/camera/ndk/include/camera/NdkCameraError.h b/camera/ndk/include/camera/NdkCameraError.h
new file mode 100644
index 0000000..6b58155
--- /dev/null
+++ b/camera/ndk/include/camera/NdkCameraError.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraError.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_ERROR_H
+#define _NDK_CAMERA_ERROR_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+typedef enum {
+ ACAMERA_OK = 0,
+
+ ACAMERA_ERROR_BASE = -10000,
+
+ /**
+ * Camera operation has failed due to an unspecified cause.
+ */
+ ACAMERA_ERROR_UNKNOWN = ACAMERA_ERROR_BASE,
+
+ /**
+ * Camera operation has failed due to an invalid parameter being passed to the method.
+ */
+ ACAMERA_ERROR_INVALID_PARAMETER = ACAMERA_ERROR_BASE - 1,
+
+ /**
+ * Camera operation has failed because the camera device has been closed, possibly because a
+ * higher-priority client has taken ownership of the camera device.
+ */
+ ACAMERA_ERROR_CAMERA_DISCONNECTED = ACAMERA_ERROR_BASE - 2,
+
+ /**
+ * Camera operation has failed due to insufficient memory.
+ */
+ ACAMERA_ERROR_NOT_ENOUGH_MEMORY = ACAMERA_ERROR_BASE - 3,
+
+ /**
+ * Camera operation has failed due to the requested metadata tag cannot be found in input
+ * {@link ACameraMetadata} or {@link ACaptureRequest}.
+ */
+ ACAMERA_ERROR_METADATA_NOT_FOUND = ACAMERA_ERROR_BASE - 4,
+
+ /**
+ * Camera operation has failed and the camera device has encountered a fatal error and needs to
+ * be re-opened before it can be used again.
+ */
+ ACAMERA_ERROR_CAMERA_DEVICE = ACAMERA_ERROR_BASE - 5,
+
+ /**
+ * Camera operation has failed and the camera service has encountered a fatal error.
+ *
+ * <p>The Android device may need to be shut down and restarted to restore
+ * camera function, or there may be a persistent hardware problem.</p>
+ *
+ * <p>An attempt at recovery may be possible by closing the
+ * ACameraDevice and the ACameraManager, and trying to acquire all resources
+ * again from scratch.</p>
+ */
+ ACAMERA_ERROR_CAMERA_SERVICE = ACAMERA_ERROR_BASE - 6,
+
+ /**
+ * The {@link ACameraCaptureSession} has been closed and cannnot perform any operation other
+ * than {@link ACameraCaptureSession_close}.
+ */
+ ACAMERA_ERROR_SESSION_CLOSED = ACAMERA_ERROR_BASE - 7,
+
+ /**
+ * Camera operation has failed due to an invalid internal operation. Usually this is due to a
+ * low-level problem that may resolve itself on retry
+ */
+ ACAMERA_ERROR_INVALID_OPERATION = ACAMERA_ERROR_BASE - 8,
+
+ /**
+ * Camera device does not support the stream configuration provided by application in
+ * {@link ACameraDevice_createCaptureSession}.
+ */
+ ACAMERA_ERROR_STREAM_CONFIGURE_FAIL = ACAMERA_ERROR_BASE - 9,
+
+ /**
+ * Camera device is being used by another higher priority camera API client.
+ */
+ ACAMERA_ERROR_CAMERA_IN_USE = ACAMERA_ERROR_BASE - 10,
+
+ /**
+ * The system-wide limit for number of open cameras or camera resources has been reached, and
+ * more camera devices cannot be opened until previous instances are closed.
+ */
+ ACAMERA_ERROR_MAX_CAMERA_IN_USE = ACAMERA_ERROR_BASE - 11,
+
+ /**
+ * The camera is disabled due to a device policy, and cannot be opened.
+ */
+ ACAMERA_ERROR_CAMERA_DISABLED = ACAMERA_ERROR_BASE - 12,
+
+ /**
+ * The application does not have permission to open camera.
+ */
+ ACAMERA_ERROR_PERMISSION_DENIED = ACAMERA_ERROR_BASE - 13,
+} camera_status_t;
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_ERROR_H */
+
+/** @} */
diff --git a/camera/ndk/include/camera/NdkCameraManager.h b/camera/ndk/include/camera/NdkCameraManager.h
new file mode 100644
index 0000000..5b5c98b
--- /dev/null
+++ b/camera/ndk/include/camera/NdkCameraManager.h
@@ -0,0 +1,282 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraManager.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_MANAGER_H
+#define _NDK_CAMERA_MANAGER_H
+
+#include <sys/cdefs.h>
+
+#include "NdkCameraError.h"
+#include "NdkCameraMetadata.h"
+#include "NdkCameraDevice.h"
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraManager is opaque type that provides access to camera service.
+ *
+ * A pointer can be obtained using {@link ACameraManager_create} method.
+ */
+typedef struct ACameraManager ACameraManager;
+
+/**
+ * Create ACameraManager instance.
+ *
+ * <p>The ACameraManager is responsible for
+ * detecting, characterizing, and connecting to {@link ACameraDevice}s.</p>
+ *
+ * <p>The caller must call {@link ACameraManager_delete} to free the resources once it is done
+ * using the ACameraManager instance.</p>
+ *
+ * @return a {@link ACameraManager} instance.
+ *
+ */
+ACameraManager* ACameraManager_create();
+
+/**
+ * <p>Delete the {@link ACameraManager} instance and free its resources. </p>
+ *
+ * @param manager the {@link ACameraManager} instance to be deleted.
+ */
+void ACameraManager_delete(ACameraManager* manager);
+
+/// Struct to hold list of camera devices
+typedef struct ACameraIdList {
+ int numCameras; ///< Number of connected camera devices
+ const char** cameraIds; ///< list of identifier of connected camera devices
+} ACameraIdList;
+
+/**
+ * Create a list of currently connected camera devices, including
+ * cameras that may be in use by other camera API clients.
+ *
+ * <p>Non-removable cameras use integers starting at 0 for their
+ * identifiers, while removable cameras have a unique identifier for each
+ * individual device, even if they are the same model.</p>
+ *
+ * <p>ACameraManager_getCameraIdList will allocate and return an {@link ACameraIdList}.
+ * The caller must call {@link ACameraManager_deleteCameraIdList} to free the memory</p>
+ *
+ * @param manager the {@link ACameraManager} of interest
+ * @param cameraIdList the output {@link ACameraIdList} will be filled in here if the method call
+ * succeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager or cameraIdList is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if connection to camera service fails.</li>
+ * <li>{@link ACAMERA_ERROR_NOT_ENOUGH_MEMORY} if allocating memory fails.</li></ul>
+ */
+camera_status_t ACameraManager_getCameraIdList(ACameraManager* manager,
+ /*out*/ACameraIdList** cameraIdList);
+
+/**
+ * Delete a list of camera devices allocated via {@link ACameraManager_getCameraIdList}.
+ *
+ * @param cameraIdList the {@link ACameraIdList} to be deleted.
+ */
+void ACameraManager_deleteCameraIdList(ACameraIdList* cameraIdList);
+
+/**
+ * Definition of camera availability callbacks.
+ *
+ * @param context The optional application context provided by user in
+ * {@link ACameraManager_AvailabilityCallbacks}.
+ * @param cameraId The ID of the camera device whose availability is changing. The memory of this
+ * argument is owned by camera framework and will become invalid immediately after
+ * this callback returns.
+ */
+typedef void (*ACameraManager_AvailabilityCallback)(void* context, const char* cameraId);
+
+/**
+ * A listener for camera devices becoming available or unavailable to open.
+ *
+ * <p>Cameras become available when they are no longer in use, or when a new
+ * removable camera is connected. They become unavailable when some
+ * application or service starts using a camera, or when a removable camera
+ * is disconnected.</p>
+ *
+ * @see ACameraManager_registerAvailabilityCallback
+ */
+typedef struct ACameraManager_AvailabilityListener {
+ /// Optional application context.
+ void* context;
+ /// Called when a camera becomes available
+ ACameraManager_AvailabilityCallback onCameraAvailable;
+ /// Called when a camera becomes unavailable
+ ACameraManager_AvailabilityCallback onCameraUnavailable;
+} ACameraManager_AvailabilityCallbacks;
+
+/**
+ * Register camera availability callbacks.
+ *
+ * <p>onCameraUnavailable will be called whenever a camera device is opened by any camera API client.
+ * Other camera API clients may still be able to open such a camera device, evicting the existing
+ * client if they have higher priority than the existing client of a camera device.
+ * See {@link ACameraManager_openCamera} for more details.</p>
+ *
+ * <p>The callbacks will be called on a dedicated thread shared among all ACameraManager
+ * instances.</p>
+ *
+ * <p>Since this callback will be registered with the camera service, remember to unregister it
+ * once it is no longer needed; otherwise the callback will continue to receive events
+ * indefinitely and it may prevent other resources from being released. Specifically, the
+ * callbacks will be invoked independently of the general activity lifecycle and independently
+ * of the state of individual ACameraManager instances.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param callback the {@link ACameraManager_AvailabilityCallbacks} to be registered.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager or callback is NULL, or
+ * {ACameraManager_AvailabilityCallbacks#onCameraAvailable} or
+ * {ACameraManager_AvailabilityCallbacks#onCameraUnavailable} is NULL.</li></ul>
+ */
+camera_status_t ACameraManager_registerAvailabilityCallback(
+ ACameraManager* manager, const ACameraManager_AvailabilityCallbacks* callback);
+
+/**
+ * Unregister camera availability callbacks.
+ *
+ * <p>Removing a callback that isn't registered has no effect.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param callback the {@link ACameraManager_AvailabilityCallbacks} to be unregistered.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if callback,
+ * {ACameraManager_AvailabilityCallbacks#onCameraAvailable} or
+ * {ACameraManager_AvailabilityCallbacks#onCameraUnavailable} is NULL.</li></ul>
+ */
+camera_status_t ACameraManager_unregisterAvailabilityCallback(
+ ACameraManager* manager, const ACameraManager_AvailabilityCallbacks* callback);
+
+/**
+ * Query the capabilities of a camera device. These capabilities are
+ * immutable for a given camera.
+ *
+ * <p>See {@link ACameraMetadata} document and {@link NdkCameraMetadataTags.h} for more details.</p>
+ *
+ * <p>The caller must call {@link ACameraMetadata_free} to free the memory of the output
+ * characteristics.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param cameraId the ID string of the camera device of interest.
+ * @param characteristics the output {@link ACameraMetadata} will be filled here if the method call
+ * succeeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager, cameraId, or characteristics
+ * is NULL, or cameraId does not match any camera devices connected.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if connection to camera service fails.</li>
+ * <li>{@link ACAMERA_ERROR_NOT_ENOUGH_MEMORY} if allocating memory fails.</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraManager_getCameraCharacteristics(
+ ACameraManager* manager, const char* cameraId,
+ /*out*/ACameraMetadata** characteristics);
+
+/**
+ * Open a connection to a camera with the given ID. The opened camera device will be
+ * returned in the `device` parameter.
+ *
+ * <p>Use {@link ACameraManager_getCameraIdList} to get the list of available camera
+ * devices. Note that even if an id is listed, open may fail if the device
+ * is disconnected between the calls to {@link ACameraManager_getCameraIdList} and
+ * {@link ACameraManager_openCamera}, or if a higher-priority camera API client begins using the
+ * camera device.</p>
+ *
+ * <p>Devices for which the
+ * {@link ACameraManager_AvailabilityCallbacks#onCameraUnavailable} callback has been called due to
+ * the device being in use by a lower-priority, background camera API client can still potentially
+ * be opened by calling this method when the calling camera API client has a higher priority
+ * than the current camera API client using this device. In general, if the top, foreground
+ * activity is running within your application process, your process will be given the highest
+ * priority when accessing the camera, and this method will succeed even if the camera device is
+ * in use by another camera API client. Any lower-priority application that loses control of the
+ * camera in this way will receive an
+ * {@link ACameraDevice_stateCallbacks#onDisconnected} callback.</p>
+ *
+ * <p>Once the camera is successfully opened,the ACameraDevice can then be set up
+ * for operation by calling {@link ACameraDevice_createCaptureSession} and
+ * {@link ACameraDevice_createCaptureRequest}.</p>
+ *
+ * <p>If the camera becomes disconnected after this function call returns,
+ * {@link ACameraDevice_stateCallbacks#onDisconnected} with a
+ * ACameraDevice in the disconnected state will be called.</p>
+ *
+ * <p>If the camera runs into error after this function call returns,
+ * {@link ACameraDevice_stateCallbacks#onError} with a
+ * ACameraDevice in the error state will be called.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param cameraId the ID string of the camera device to be opened.
+ * @param callback the {@link ACameraDevice_StateCallbacks} associated with the opened camera device.
+ * @param device the opened {@link ACameraDevice} will be filled here if the method call succeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager, cameraId, callback, or device
+ * is NULL, or cameraId does not match any camera devices connected.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if connection to camera service fails.</li>
+ * <li>{@link ACAMERA_ERROR_NOT_ENOUGH_MEMORY} if allocating memory fails.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_IN_USE} if camera device is being used by a higher
+ * priority camera API client.</li>
+ * <li>{@link ACAMERA_ERROR_MAX_CAMERA_IN_USE} if the system-wide limit for number of open
+ * cameras or camera resources has been reached, and more camera devices cannot be
+ * opened until previous instances are closed.</li>
+ * <li>{@link ACAMERA_ERROR_CAMERA_DISABLED} if the camera is disabled due to a device
+ * policy, and cannot be opened.</li>
+ * <li>{@link ACAMERA_ERROR_PERMISSION_DENIED} if the application does not have permission
+ * to open camera.</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraManager_openCamera(
+ ACameraManager* manager, const char* cameraId,
+ ACameraDevice_StateCallbacks* callback,
+ /*out*/ACameraDevice** device);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_MANAGER_H */
+
+/** @} */
diff --git a/camera/ndk/include/camera/NdkCameraMetadata.h b/camera/ndk/include/camera/NdkCameraMetadata.h
new file mode 100644
index 0000000..f2aec98
--- /dev/null
+++ b/camera/ndk/include/camera/NdkCameraMetadata.h
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraMetadata.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_METADATA_H
+#define _NDK_CAMERA_METADATA_H
+
+#include <sys/cdefs.h>
+
+#include "NdkCameraError.h"
+#include "NdkCameraMetadataTags.h"
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraMetadata is opaque type that provides access to read-only camera metadata like camera
+ * characteristics (via {@link ACameraManager_getCameraCharacteristics}) or capture results (via
+ * {@link ACameraCaptureSession_captureCallback_result}).
+ */
+typedef struct ACameraMetadata ACameraMetadata;
+
+/**
+ * Possible data types of a metadata entry.
+ *
+ * Keep in sync with system/media/include/system/camera_metadata.h
+ */
+enum {
+ /// Unsigned 8-bit integer (uint8_t)
+ ACAMERA_TYPE_BYTE = 0,
+ /// Signed 32-bit integer (int32_t)
+ ACAMERA_TYPE_INT32 = 1,
+ /// 32-bit float (float)
+ ACAMERA_TYPE_FLOAT = 2,
+ /// Signed 64-bit integer (int64_t)
+ ACAMERA_TYPE_INT64 = 3,
+ /// 64-bit float (double)
+ ACAMERA_TYPE_DOUBLE = 4,
+ /// A 64-bit fraction (ACameraMetadata_rational)
+ ACAMERA_TYPE_RATIONAL = 5,
+ /// Number of type fields
+ ACAMERA_NUM_TYPES
+};
+
+/**
+ * Definition of rational data type in {@link ACameraMetadata}.
+ */
+typedef struct ACameraMetadata_rational {
+ int32_t numerator;
+ int32_t denominator;
+} ACameraMetadata_rational;
+
+/**
+ * A single camera metadata entry.
+ *
+ * <p>Each entry is an array of values, though many metadata fields may only have 1 entry in the
+ * array.</p>
+ */
+typedef struct ACameraMetadata_entry {
+ /**
+ * The tag identifying the entry.
+ *
+ * <p> It is one of the values defined in {@link NdkCameraMetadataTags.h}, and defines how the
+ * entry should be interpreted and which parts of the API provide it.
+ * See {@link NdkCameraMetadataTags.h} for more details. </p>
+ */
+ uint32_t tag;
+
+ /**
+ * The data type of this metadata entry.
+ *
+ * <p>Must be one of ACAMERA_TYPE_* enum values defined above. A particular tag always has the
+ * same type.</p>
+ */
+ uint8_t type;
+
+ /**
+ * Count of elements (NOT count of bytes) in this metadata entry.
+ */
+ uint32_t count;
+
+ /**
+ * Pointer to the data held in this metadata entry.
+ *
+ * <p>The type field above defines which union member pointer is valid. The count field above
+ * defines the length of the data in number of elements.</p>
+ */
+ union {
+ uint8_t *u8;
+ int32_t *i32;
+ float *f;
+ int64_t *i64;
+ double *d;
+ ACameraMetadata_rational* r;
+ } data;
+} ACameraMetadata_entry;
+
+/**
+ * A single read-only camera metadata entry.
+ *
+ * <p>Each entry is an array of values, though many metadata fields may only have 1 entry in the
+ * array.</p>
+ */
+typedef struct ACameraMetadata_const_entry {
+ /**
+ * The tag identifying the entry.
+ *
+ * <p> It is one of the values defined in {@link NdkCameraMetadataTags.h}, and defines how the
+ * entry should be interpreted and which parts of the API provide it.
+ * See {@link NdkCameraMetadataTags.h} for more details. </p>
+ */
+ uint32_t tag;
+
+ /**
+ * The data type of this metadata entry.
+ *
+ * <p>Must be one of ACAMERA_TYPE_* enum values defined above. A particular tag always has the
+ * same type.</p>
+ */
+ uint8_t type;
+
+ /**
+ * Count of elements (NOT count of bytes) in this metadata entry.
+ */
+ uint32_t count;
+
+ /**
+ * Pointer to the data held in this metadata entry.
+ *
+ * <p>The type field above defines which union member pointer is valid. The count field above
+ * defines the length of the data in number of elements.</p>
+ */
+ union {
+ const uint8_t *u8;
+ const int32_t *i32;
+ const float *f;
+ const int64_t *i64;
+ const double *d;
+ const ACameraMetadata_rational* r;
+ } data;
+} ACameraMetadata_const_entry;
+
+/**
+ * Get a metadata entry from an input {@link ACameraMetadata}.
+ *
+ * <p>The memory of the data field in the returned entry is managed by camera framework. Do not
+ * attempt to free it.</p>
+ *
+ * @param metadata the {@link ACameraMetadata} of interest.
+ * @param tag the tag value of the camera metadata entry to be get.
+ * @param entry the output {@link ACameraMetadata_const_entry} will be filled here if the method
+ * call succeeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if metadata or entry is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_METADATA_NOT_FOUND} if input metadata does not contain an entry
+ * of input tag value.</li></ul>
+ */
+camera_status_t ACameraMetadata_getConstEntry(
+ const ACameraMetadata* metadata, uint32_t tag, /*out*/ACameraMetadata_const_entry* entry);
+
+/**
+ * List all the entry tags in input {@link ACameraMetadata}.
+ *
+ * @param metadata the {@link ACameraMetadata} of interest.
+ * @param numEntries number of metadata entries in input {@link ACameraMetadata}
+ * @param tags the tag values of the metadata entries. Length of tags is returned in numEntries
+ * argument. The memory is managed by ACameraMetadata itself and must NOT be free/delete
+ * by application. Do NOT access tags after calling ACameraMetadata_free.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if metadata, numEntries or tags is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraMetadata_getAllTags(
+ const ACameraMetadata* metadata, /*out*/int32_t* numEntries, /*out*/const uint32_t** tags);
+
+/**
+ * Create a copy of input {@link ACameraMetadata}.
+ *
+ * <p>The returned ACameraMetadata must be freed by the application by {@link ACameraMetadata_free}
+ * after application is done using it.</p>
+ *
+ * @param src the input {@link ACameraMetadata} to be copied.
+ *
+ * @return a valid ACameraMetadata pointer or NULL if the input metadata cannot be copied.
+ */
+ACameraMetadata* ACameraMetadata_copy(const ACameraMetadata* src);
+
+/**
+ * Free a {@link ACameraMetadata} structure.
+ *
+ * @param metadata the {@link ACameraMetadata} to be freed.
+ */
+void ACameraMetadata_free(ACameraMetadata* metadata);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_METADATA_H */
+
+/** @} */
diff --git a/camera/ndk/include/camera/NdkCameraMetadataTags.h b/camera/ndk/include/camera/NdkCameraMetadataTags.h
new file mode 100644
index 0000000..25d364e
--- /dev/null
+++ b/camera/ndk/include/camera/NdkCameraMetadataTags.h
@@ -0,0 +1,6974 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraMetadataTags.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_METADATA_TAGS_H
+#define _NDK_CAMERA_METADATA_TAGS_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+typedef enum acamera_metadata_section {
+ ACAMERA_COLOR_CORRECTION,
+ ACAMERA_CONTROL,
+ ACAMERA_DEMOSAIC,
+ ACAMERA_EDGE,
+ ACAMERA_FLASH,
+ ACAMERA_FLASH_INFO,
+ ACAMERA_HOT_PIXEL,
+ ACAMERA_JPEG,
+ ACAMERA_LENS,
+ ACAMERA_LENS_INFO,
+ ACAMERA_NOISE_REDUCTION,
+ ACAMERA_QUIRKS,
+ ACAMERA_REQUEST,
+ ACAMERA_SCALER,
+ ACAMERA_SENSOR,
+ ACAMERA_SENSOR_INFO,
+ ACAMERA_SHADING,
+ ACAMERA_STATISTICS,
+ ACAMERA_STATISTICS_INFO,
+ ACAMERA_TONEMAP,
+ ACAMERA_LED,
+ ACAMERA_INFO,
+ ACAMERA_BLACK_LEVEL,
+ ACAMERA_SYNC,
+ ACAMERA_REPROCESS,
+ ACAMERA_DEPTH,
+ ACAMERA_SECTION_COUNT,
+
+ ACAMERA_VENDOR = 0x8000
+} acamera_metadata_section_t;
+
+/**
+ * Hierarchy positions in enum space.
+ */
+typedef enum acamera_metadata_section_start {
+ ACAMERA_COLOR_CORRECTION_START = ACAMERA_COLOR_CORRECTION << 16,
+ ACAMERA_CONTROL_START = ACAMERA_CONTROL << 16,
+ ACAMERA_DEMOSAIC_START = ACAMERA_DEMOSAIC << 16,
+ ACAMERA_EDGE_START = ACAMERA_EDGE << 16,
+ ACAMERA_FLASH_START = ACAMERA_FLASH << 16,
+ ACAMERA_FLASH_INFO_START = ACAMERA_FLASH_INFO << 16,
+ ACAMERA_HOT_PIXEL_START = ACAMERA_HOT_PIXEL << 16,
+ ACAMERA_JPEG_START = ACAMERA_JPEG << 16,
+ ACAMERA_LENS_START = ACAMERA_LENS << 16,
+ ACAMERA_LENS_INFO_START = ACAMERA_LENS_INFO << 16,
+ ACAMERA_NOISE_REDUCTION_START = ACAMERA_NOISE_REDUCTION << 16,
+ ACAMERA_QUIRKS_START = ACAMERA_QUIRKS << 16,
+ ACAMERA_REQUEST_START = ACAMERA_REQUEST << 16,
+ ACAMERA_SCALER_START = ACAMERA_SCALER << 16,
+ ACAMERA_SENSOR_START = ACAMERA_SENSOR << 16,
+ ACAMERA_SENSOR_INFO_START = ACAMERA_SENSOR_INFO << 16,
+ ACAMERA_SHADING_START = ACAMERA_SHADING << 16,
+ ACAMERA_STATISTICS_START = ACAMERA_STATISTICS << 16,
+ ACAMERA_STATISTICS_INFO_START = ACAMERA_STATISTICS_INFO << 16,
+ ACAMERA_TONEMAP_START = ACAMERA_TONEMAP << 16,
+ ACAMERA_LED_START = ACAMERA_LED << 16,
+ ACAMERA_INFO_START = ACAMERA_INFO << 16,
+ ACAMERA_BLACK_LEVEL_START = ACAMERA_BLACK_LEVEL << 16,
+ ACAMERA_SYNC_START = ACAMERA_SYNC << 16,
+ ACAMERA_REPROCESS_START = ACAMERA_REPROCESS << 16,
+ ACAMERA_DEPTH_START = ACAMERA_DEPTH << 16,
+ ACAMERA_VENDOR_START = ACAMERA_VENDOR << 16
+} acamera_metadata_section_start_t;
+
+/**
+ * Main enum for camera metadata tags.
+ */
+typedef enum acamera_metadata_tag {
+ /**
+ * <p>The mode control selects how the image data is converted from the
+ * sensor's native color into linear sRGB color.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When auto-white balance (AWB) is enabled with ACAMERA_CONTROL_AWB_MODE, this
+ * control is overridden by the AWB routine. When AWB is disabled, the
+ * application controls how the color mapping is performed.</p>
+ * <p>We define the expected processing pipeline below. For consistency
+ * across devices, this is always the case with TRANSFORM_MATRIX.</p>
+ * <p>When either FULL or HIGH_QUALITY is used, the camera device may
+ * do additional processing but ACAMERA_COLOR_CORRECTION_GAINS and
+ * ACAMERA_COLOR_CORRECTION_TRANSFORM will still be provided by the
+ * camera device (in the results) and be roughly correct.</p>
+ * <p>Switching to TRANSFORM_MATRIX and using the data provided from
+ * FAST or HIGH_QUALITY will yield a picture with the same white point
+ * as what was produced by the camera device in the earlier frame.</p>
+ * <p>The expected processing pipeline is as follows:</p>
+ * <p><img alt="White balance processing pipeline" src="../images/camera2/metadata/android.colorCorrection.mode/processing_pipeline.png" /></p>
+ * <p>The white balance is encoded by two values, a 4-channel white-balance
+ * gain vector (applied in the Bayer domain), and a 3x3 color transform
+ * matrix (applied after demosaic).</p>
+ * <p>The 4-channel white-balance gains are defined as:</p>
+ * <pre><code>ACAMERA_COLOR_CORRECTION_GAINS = [ R G_even G_odd B ]
+ * </code></pre>
+ * <p>where <code>G_even</code> is the gain for green pixels on even rows of the
+ * output, and <code>G_odd</code> is the gain for green pixels on the odd rows.
+ * These may be identical for a given camera device implementation; if
+ * the camera device does not support a separate gain for even/odd green
+ * channels, it will use the <code>G_even</code> value, and write <code>G_odd</code> equal to
+ * <code>G_even</code> in the output result metadata.</p>
+ * <p>The matrices for color transforms are defined as a 9-entry vector:</p>
+ * <pre><code>ACAMERA_COLOR_CORRECTION_TRANSFORM = [ I0 I1 I2 I3 I4 I5 I6 I7 I8 ]
+ * </code></pre>
+ * <p>which define a transform from input sensor colors, <code>P_in = [ r g b ]</code>,
+ * to output linear sRGB, <code>P_out = [ r' g' b' ]</code>,</p>
+ * <p>with colors as follows:</p>
+ * <pre><code>r' = I0r + I1g + I2b
+ * g' = I3r + I4g + I5b
+ * b' = I6r + I7g + I8b
+ * </code></pre>
+ * <p>Both the input and output value ranges must match. Overflow/underflow
+ * values are clipped to fit within the range.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * @see ACAMERA_CONTROL_AWB_MODE
+ */
+ ACAMERA_COLOR_CORRECTION_MODE = // byte (enum)
+ ACAMERA_COLOR_CORRECTION_START,
+ /**
+ * <p>A color transform matrix to use to transform
+ * from sensor RGB color space to output linear sRGB color space.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This matrix is either set by the camera device when the request
+ * ACAMERA_COLOR_CORRECTION_MODE is not TRANSFORM_MATRIX, or
+ * directly by the application in the request when the
+ * ACAMERA_COLOR_CORRECTION_MODE is TRANSFORM_MATRIX.</p>
+ * <p>In the latter case, the camera device may round the matrix to account
+ * for precision issues; the final rounded matrix should be reported back
+ * in this matrix result metadata. The transform should keep the magnitude
+ * of the output color values within <code>[0, 1.0]</code> (assuming input color
+ * values is within the normalized range <code>[0, 1.0]</code>), or clipping may occur.</p>
+ * <p>The valid range of each matrix element varies on different devices, but
+ * values within [-1.5, 3.0] are guaranteed not to be clipped.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_MODE
+ */
+ ACAMERA_COLOR_CORRECTION_TRANSFORM = // rational[3*3]
+ ACAMERA_COLOR_CORRECTION_START + 1,
+ /**
+ * <p>Gains applying to Bayer raw color channels for
+ * white-balance.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>These per-channel gains are either set by the camera device
+ * when the request ACAMERA_COLOR_CORRECTION_MODE is not
+ * TRANSFORM_MATRIX, or directly by the application in the
+ * request when the ACAMERA_COLOR_CORRECTION_MODE is
+ * TRANSFORM_MATRIX.</p>
+ * <p>The gains in the result metadata are the gains actually
+ * applied by the camera device to the current frame.</p>
+ * <p>The valid range of gains varies on different devices, but gains
+ * between [1.0, 3.0] are guaranteed not to be clipped. Even if a given
+ * device allows gains below 1.0, this is usually not recommended because
+ * this can create color artifacts.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_MODE
+ */
+ ACAMERA_COLOR_CORRECTION_GAINS = // float[4]
+ ACAMERA_COLOR_CORRECTION_START + 2,
+ /**
+ * <p>Mode of operation for the chromatic aberration correction algorithm.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Chromatic (color) aberration is caused by the fact that different wavelengths of light
+ * can not focus on the same point after exiting from the lens. This metadata defines
+ * the high level control of chromatic aberration correction algorithm, which aims to
+ * minimize the chromatic artifacts that may occur along the object boundaries in an
+ * image.</p>
+ * <p>FAST/HIGH_QUALITY both mean that camera device determined aberration
+ * correction will be applied. HIGH_QUALITY mode indicates that the camera device will
+ * use the highest-quality aberration correction algorithms, even if it slows down
+ * capture rate. FAST means the camera device will not slow down capture rate when
+ * applying aberration correction.</p>
+ * <p>LEGACY devices will always be in FAST mode.</p>
+ */
+ ACAMERA_COLOR_CORRECTION_ABERRATION_MODE = // byte (enum)
+ ACAMERA_COLOR_CORRECTION_START + 3,
+ /**
+ * <p>List of aberration correction modes for ACAMERA_COLOR_CORRECTION_ABERRATION_MODE that are
+ * supported by this camera device.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This key lists the valid modes for ACAMERA_COLOR_CORRECTION_ABERRATION_MODE. If no
+ * aberration correction modes are available for a device, this list will solely include
+ * OFF mode. All camera devices will support either OFF or FAST mode.</p>
+ * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always list
+ * OFF mode. This includes all FULL level devices.</p>
+ * <p>LEGACY devices will always only support FAST mode.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+ */
+ ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES = // byte[n]
+ ACAMERA_COLOR_CORRECTION_START + 4,
+ ACAMERA_COLOR_CORRECTION_END,
+
+ /**
+ * <p>The desired setting for the camera device's auto-exposure
+ * algorithm's antibanding compensation.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Some kinds of lighting fixtures, such as some fluorescent
+ * lights, flicker at the rate of the power supply frequency
+ * (60Hz or 50Hz, depending on country). While this is
+ * typically not noticeable to a person, it can be visible to
+ * a camera device. If a camera sets its exposure time to the
+ * wrong value, the flicker may become visible in the
+ * viewfinder as flicker or in a final captured image, as a
+ * set of variable-brightness bands across the image.</p>
+ * <p>Therefore, the auto-exposure routines of camera devices
+ * include antibanding routines that ensure that the chosen
+ * exposure value will not cause such banding. The choice of
+ * exposure time depends on the rate of flicker, which the
+ * camera device can detect automatically, or the expected
+ * rate can be selected by the application using this
+ * control.</p>
+ * <p>A given camera device may not support all of the possible
+ * options for the antibanding mode. The
+ * ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES key contains
+ * the available modes for a given camera device.</p>
+ * <p>AUTO mode is the default if it is available on given
+ * camera device. When AUTO mode is not available, the
+ * default will be either 50HZ or 60HZ, and both 50HZ
+ * and 60HZ will be available.</p>
+ * <p>If manual exposure control is enabled (by setting
+ * ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE to OFF),
+ * then this setting has no effect, and the application must
+ * ensure it selects exposure times that do not cause banding
+ * issues. The ACAMERA_STATISTICS_SCENE_FLICKER key can assist
+ * the application in this.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_STATISTICS_SCENE_FLICKER
+ */
+ ACAMERA_CONTROL_AE_ANTIBANDING_MODE = // byte (enum)
+ ACAMERA_CONTROL_START,
+ /**
+ * <p>Adjustment to auto-exposure (AE) target image
+ * brightness.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>The adjustment is measured as a count of steps, with the
+ * step size defined by ACAMERA_CONTROL_AE_COMPENSATION_STEP and the
+ * allowed range by ACAMERA_CONTROL_AE_COMPENSATION_RANGE.</p>
+ * <p>For example, if the exposure value (EV) step is 0.333, '6'
+ * will mean an exposure compensation of +2 EV; -3 will mean an
+ * exposure compensation of -1 EV. One EV represents a doubling
+ * of image brightness. Note that this control will only be
+ * effective if ACAMERA_CONTROL_AE_MODE <code>!=</code> OFF. This control
+ * will take effect even when ACAMERA_CONTROL_AE_LOCK <code>== true</code>.</p>
+ * <p>In the event of exposure compensation value being changed, camera device
+ * may take several frames to reach the newly requested exposure target.
+ * During that time, ACAMERA_CONTROL_AE_STATE field will be in the SEARCHING
+ * state. Once the new exposure target is reached, ACAMERA_CONTROL_AE_STATE will
+ * change from SEARCHING to either CONVERGED, LOCKED (if AE lock is enabled), or
+ * FLASH_REQUIRED (if the scene is too dark for still capture).</p>
+ *
+ * @see ACAMERA_CONTROL_AE_COMPENSATION_RANGE
+ * @see ACAMERA_CONTROL_AE_COMPENSATION_STEP
+ * @see ACAMERA_CONTROL_AE_LOCK
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AE_STATE
+ */
+ ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION = // int32
+ ACAMERA_CONTROL_START + 1,
+ /**
+ * <p>Whether auto-exposure (AE) is currently locked to its latest
+ * calculated values.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When set to <code>true</code> (ON), the AE algorithm is locked to its latest parameters,
+ * and will not change exposure settings until the lock is set to <code>false</code> (OFF).</p>
+ * <p>Note that even when AE is locked, the flash may be fired if
+ * the ACAMERA_CONTROL_AE_MODE is ON_AUTO_FLASH /
+ * ON_ALWAYS_FLASH / ON_AUTO_FLASH_REDEYE.</p>
+ * <p>When ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION is changed, even if the AE lock
+ * is ON, the camera device will still adjust its exposure value.</p>
+ * <p>If AE precapture is triggered (see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER)
+ * when AE is already locked, the camera device will not change the exposure time
+ * (ACAMERA_SENSOR_EXPOSURE_TIME) and sensitivity (ACAMERA_SENSOR_SENSITIVITY)
+ * parameters. The flash may be fired if the ACAMERA_CONTROL_AE_MODE
+ * is ON_AUTO_FLASH/ON_AUTO_FLASH_REDEYE and the scene is too dark. If the
+ * ACAMERA_CONTROL_AE_MODE is ON_ALWAYS_FLASH, the scene may become overexposed.
+ * Similarly, AE precapture trigger CANCEL has no effect when AE is already locked.</p>
+ * <p>When an AE precapture sequence is triggered, AE unlock will not be able to unlock
+ * the AE if AE is locked by the camera device internally during precapture metering
+ * sequence In other words, submitting requests with AE unlock has no effect for an
+ * ongoing precapture metering sequence. Otherwise, the precapture metering sequence
+ * will never succeed in a sequence of preview requests where AE lock is always set
+ * to <code>false</code>.</p>
+ * <p>Since the camera device has a pipeline of in-flight requests, the settings that
+ * get locked do not necessarily correspond to the settings that were present in the
+ * latest capture result received from the camera device, since additional captures
+ * and AE updates may have occurred even before the result was sent out. If an
+ * application is switching between automatic and manual control and wishes to eliminate
+ * any flicker during the switch, the following procedure is recommended:</p>
+ * <ol>
+ * <li>Starting in auto-AE mode:</li>
+ * <li>Lock AE</li>
+ * <li>Wait for the first result to be output that has the AE locked</li>
+ * <li>Copy exposure settings from that result into a request, set the request to manual AE</li>
+ * <li>Submit the capture request, proceed to run manual AE as desired.</li>
+ * </ol>
+ * <p>See ACAMERA_CONTROL_AE_STATE for AE lock related state transition details.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_CONTROL_AE_STATE
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_CONTROL_AE_LOCK = // byte (enum)
+ ACAMERA_CONTROL_START + 2,
+ /**
+ * <p>The desired mode for the camera device's
+ * auto-exposure routine.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This control is only effective if ACAMERA_CONTROL_MODE is
+ * AUTO.</p>
+ * <p>When set to any of the ON modes, the camera device's
+ * auto-exposure routine is enabled, overriding the
+ * application's selected exposure time, sensor sensitivity,
+ * and frame duration (ACAMERA_SENSOR_EXPOSURE_TIME,
+ * ACAMERA_SENSOR_SENSITIVITY, and
+ * ACAMERA_SENSOR_FRAME_DURATION). If one of the FLASH modes
+ * is selected, the camera device's flash unit controls are
+ * also overridden.</p>
+ * <p>The FLASH modes are only available if the camera device
+ * has a flash unit (ACAMERA_FLASH_INFO_AVAILABLE is <code>true</code>).</p>
+ * <p>If flash TORCH mode is desired, this field must be set to
+ * ON or OFF, and ACAMERA_FLASH_MODE set to TORCH.</p>
+ * <p>When set to any of the ON modes, the values chosen by the
+ * camera device auto-exposure routine for the overridden
+ * fields for a given capture will be available in its
+ * CaptureResult.</p>
+ *
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_FLASH_INFO_AVAILABLE
+ * @see ACAMERA_FLASH_MODE
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_CONTROL_AE_MODE = // byte (enum)
+ ACAMERA_CONTROL_START + 3,
+ /**
+ * <p>List of metering areas to use for auto-exposure adjustment.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Not available if android.control.maxRegionsAe is 0.
+ * Otherwise will always be present.</p>
+ * <p>The maximum number of regions supported by the device is determined by the value
+ * of android.control.maxRegionsAe.</p>
+ * <p>The data representation is int[5 * area_count].
+ * Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
+ * The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
+ * ymax.</p>
+ * <p>The coordinate system is based on the active pixel array,
+ * with (0,0) being the top-left pixel in the active pixel array, and
+ * (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
+ * bottom-right pixel in the active pixel array.</p>
+ * <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
+ * for every pixel in the area. This means that a large metering area
+ * with the same weight as a smaller area will have more effect in
+ * the metering result. Metering areas can partially overlap and the
+ * camera device will add the weights in the overlap region.</p>
+ * <p>The weights are relative to weights of other exposure metering regions, so if only one
+ * region is used, all non-zero weights will have the same effect. A region with 0
+ * weight is ignored.</p>
+ * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
+ * camera device.</p>
+ * <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
+ * capture result metadata, the camera device will ignore the sections outside the crop
+ * region and output only the intersection rectangle as the metering region in the result
+ * metadata. If the region is entirely outside the crop region, it will be ignored and
+ * not reported in the result metadata.</p>
+ *
+ * @see ACAMERA_SCALER_CROP_REGION
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_CONTROL_AE_REGIONS = // int32[5*area_count]
+ ACAMERA_CONTROL_START + 4,
+ /**
+ * <p>Range over which the auto-exposure routine can
+ * adjust the capture frame rate to maintain good
+ * exposure.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Only constrains auto-exposure (AE) algorithm, not
+ * manual control of ACAMERA_SENSOR_EXPOSURE_TIME and
+ * ACAMERA_SENSOR_FRAME_DURATION.</p>
+ *
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ */
+ ACAMERA_CONTROL_AE_TARGET_FPS_RANGE = // int32[2]
+ ACAMERA_CONTROL_START + 5,
+ /**
+ * <p>Whether the camera device will trigger a precapture
+ * metering sequence when it processes this request.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This entry is normally set to IDLE, or is not
+ * included at all in the request settings. When included and
+ * set to START, the camera device will trigger the auto-exposure (AE)
+ * precapture metering sequence.</p>
+ * <p>When set to CANCEL, the camera device will cancel any active
+ * precapture metering trigger, and return to its initial AE state.
+ * If a precapture metering sequence is already completed, and the camera
+ * device has implicitly locked the AE for subsequent still capture, the
+ * CANCEL trigger will unlock the AE and return to its initial AE state.</p>
+ * <p>The precapture sequence should be triggered before starting a
+ * high-quality still capture for final metering decisions to
+ * be made, and for firing pre-capture flash pulses to estimate
+ * scene brightness and required final capture flash power, when
+ * the flash is enabled.</p>
+ * <p>Normally, this entry should be set to START for only a
+ * single request, and the application should wait until the
+ * sequence completes before starting a new one.</p>
+ * <p>When a precapture metering sequence is finished, the camera device
+ * may lock the auto-exposure routine internally to be able to accurately expose the
+ * subsequent still capture image (<code>ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE</code>).
+ * For this case, the AE may not resume normal scan if no subsequent still capture is
+ * submitted. To ensure that the AE routine restarts normal scan, the application should
+ * submit a request with <code>ACAMERA_CONTROL_AE_LOCK == true</code>, followed by a request
+ * with <code>ACAMERA_CONTROL_AE_LOCK == false</code>, if the application decides not to submit a
+ * still capture request after the precapture sequence completes. Alternatively, for
+ * API level 23 or newer devices, the CANCEL can be used to unlock the camera device
+ * internally locked AE if the application doesn't submit a still capture request after
+ * the AE precapture trigger. Note that, the CANCEL was added in API level 23, and must not
+ * be used in devices that have earlier API levels.</p>
+ * <p>The exact effect of auto-exposure (AE) precapture trigger
+ * depends on the current AE mode and state; see
+ * ACAMERA_CONTROL_AE_STATE for AE precapture state transition
+ * details.</p>
+ * <p>On LEGACY-level devices, the precapture trigger is not supported;
+ * capturing a high-resolution JPEG image will automatically trigger a
+ * precapture sequence before the high-resolution capture, including
+ * potentially firing a pre-capture flash.</p>
+ * <p>Using the precapture trigger and the auto-focus trigger ACAMERA_CONTROL_AF_TRIGGER
+ * simultaneously is allowed. However, since these triggers often require cooperation between
+ * the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
+ * focus sweep), the camera device may delay acting on a later trigger until the previous
+ * trigger has been fully handled. This may lead to longer intervals between the trigger and
+ * changes to ACAMERA_CONTROL_AE_STATE indicating the start of the precapture sequence, for
+ * example.</p>
+ * <p>If both the precapture and the auto-focus trigger are activated on the same request, then
+ * the camera device will complete them in the optimal order for that device.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_LOCK
+ * @see ACAMERA_CONTROL_AE_STATE
+ * @see ACAMERA_CONTROL_AF_TRIGGER
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ */
+ ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER = // byte (enum)
+ ACAMERA_CONTROL_START + 6,
+ /**
+ * <p>Whether auto-focus (AF) is currently enabled, and what
+ * mode it is set to.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Only effective if ACAMERA_CONTROL_MODE = AUTO and the lens is not fixed focus
+ * (i.e. <code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE > 0</code>). Also note that
+ * when ACAMERA_CONTROL_AE_MODE is OFF, the behavior of AF is device
+ * dependent. It is recommended to lock AF by using ACAMERA_CONTROL_AF_TRIGGER before
+ * setting ACAMERA_CONTROL_AE_MODE to OFF, or set AF mode to OFF when AE is OFF.</p>
+ * <p>If the lens is controlled by the camera device auto-focus algorithm,
+ * the camera device will report the current AF status in ACAMERA_CONTROL_AF_STATE
+ * in result metadata.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AF_STATE
+ * @see ACAMERA_CONTROL_AF_TRIGGER
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+ */
+ ACAMERA_CONTROL_AF_MODE = // byte (enum)
+ ACAMERA_CONTROL_START + 7,
+ /**
+ * <p>List of metering areas to use for auto-focus.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Not available if android.control.maxRegionsAf is 0.
+ * Otherwise will always be present.</p>
+ * <p>The maximum number of focus areas supported by the device is determined by the value
+ * of android.control.maxRegionsAf.</p>
+ * <p>The data representation is int[5 * area_count].
+ * Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
+ * The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
+ * ymax.</p>
+ * <p>The coordinate system is based on the active pixel array,
+ * with (0,0) being the top-left pixel in the active pixel array, and
+ * (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
+ * bottom-right pixel in the active pixel array.</p>
+ * <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
+ * for every pixel in the area. This means that a large metering area
+ * with the same weight as a smaller area will have more effect in
+ * the metering result. Metering areas can partially overlap and the
+ * camera device will add the weights in the overlap region.</p>
+ * <p>The weights are relative to weights of other metering regions, so if only one region
+ * is used, all non-zero weights will have the same effect. A region with 0 weight is
+ * ignored.</p>
+ * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
+ * camera device.</p>
+ * <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
+ * capture result metadata, the camera device will ignore the sections outside the crop
+ * region and output only the intersection rectangle as the metering region in the result
+ * metadata. If the region is entirely outside the crop region, it will be ignored and
+ * not reported in the result metadata.</p>
+ *
+ * @see ACAMERA_SCALER_CROP_REGION
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_CONTROL_AF_REGIONS = // int32[5*area_count]
+ ACAMERA_CONTROL_START + 8,
+ /**
+ * <p>Whether the camera device will trigger autofocus for this request.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This entry is normally set to IDLE, or is not
+ * included at all in the request settings.</p>
+ * <p>When included and set to START, the camera device will trigger the
+ * autofocus algorithm. If autofocus is disabled, this trigger has no effect.</p>
+ * <p>When set to CANCEL, the camera device will cancel any active trigger,
+ * and return to its initial AF state.</p>
+ * <p>Generally, applications should set this entry to START or CANCEL for only a
+ * single capture, and then return it to IDLE (or not set at all). Specifying
+ * START for multiple captures in a row means restarting the AF operation over
+ * and over again.</p>
+ * <p>See ACAMERA_CONTROL_AF_STATE for what the trigger means for each AF mode.</p>
+ * <p>Using the autofocus trigger and the precapture trigger ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * simultaneously is allowed. However, since these triggers often require cooperation between
+ * the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
+ * focus sweep), the camera device may delay acting on a later trigger until the previous
+ * trigger has been fully handled. This may lead to longer intervals between the trigger and
+ * changes to ACAMERA_CONTROL_AF_STATE, for example.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_CONTROL_AF_STATE
+ */
+ ACAMERA_CONTROL_AF_TRIGGER = // byte (enum)
+ ACAMERA_CONTROL_START + 9,
+ /**
+ * <p>Whether auto-white balance (AWB) is currently locked to its
+ * latest calculated values.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When set to <code>true</code> (ON), the AWB algorithm is locked to its latest parameters,
+ * and will not change color balance settings until the lock is set to <code>false</code> (OFF).</p>
+ * <p>Since the camera device has a pipeline of in-flight requests, the settings that
+ * get locked do not necessarily correspond to the settings that were present in the
+ * latest capture result received from the camera device, since additional captures
+ * and AWB updates may have occurred even before the result was sent out. If an
+ * application is switching between automatic and manual control and wishes to eliminate
+ * any flicker during the switch, the following procedure is recommended:</p>
+ * <ol>
+ * <li>Starting in auto-AWB mode:</li>
+ * <li>Lock AWB</li>
+ * <li>Wait for the first result to be output that has the AWB locked</li>
+ * <li>Copy AWB settings from that result into a request, set the request to manual AWB</li>
+ * <li>Submit the capture request, proceed to run manual AWB as desired.</li>
+ * </ol>
+ * <p>Note that AWB lock is only meaningful when
+ * ACAMERA_CONTROL_AWB_MODE is in the AUTO mode; in other modes,
+ * AWB is already fixed to a specific setting.</p>
+ * <p>Some LEGACY devices may not support ON; the value is then overridden to OFF.</p>
+ *
+ * @see ACAMERA_CONTROL_AWB_MODE
+ */
+ ACAMERA_CONTROL_AWB_LOCK = // byte (enum)
+ ACAMERA_CONTROL_START + 10,
+ /**
+ * <p>Whether auto-white balance (AWB) is currently setting the color
+ * transform fields, and what its illumination target
+ * is.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This control is only effective if ACAMERA_CONTROL_MODE is AUTO.</p>
+ * <p>When set to the ON mode, the camera device's auto-white balance
+ * routine is enabled, overriding the application's selected
+ * ACAMERA_COLOR_CORRECTION_TRANSFORM, ACAMERA_COLOR_CORRECTION_GAINS and
+ * ACAMERA_COLOR_CORRECTION_MODE. Note that when ACAMERA_CONTROL_AE_MODE
+ * is OFF, the behavior of AWB is device dependent. It is recommened to
+ * also set AWB mode to OFF or lock AWB by using ACAMERA_CONTROL_AWB_LOCK before
+ * setting AE mode to OFF.</p>
+ * <p>When set to the OFF mode, the camera device's auto-white balance
+ * routine is disabled. The application manually controls the white
+ * balance by ACAMERA_COLOR_CORRECTION_TRANSFORM, ACAMERA_COLOR_CORRECTION_GAINS
+ * and ACAMERA_COLOR_CORRECTION_MODE.</p>
+ * <p>When set to any other modes, the camera device's auto-white
+ * balance routine is disabled. The camera device uses each
+ * particular illumination target for white balance
+ * adjustment. The application's values for
+ * ACAMERA_COLOR_CORRECTION_TRANSFORM,
+ * ACAMERA_COLOR_CORRECTION_GAINS and
+ * ACAMERA_COLOR_CORRECTION_MODE are ignored.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_MODE
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AWB_LOCK
+ * @see ACAMERA_CONTROL_MODE
+ */
+ ACAMERA_CONTROL_AWB_MODE = // byte (enum)
+ ACAMERA_CONTROL_START + 11,
+ /**
+ * <p>List of metering areas to use for auto-white-balance illuminant
+ * estimation.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Not available if android.control.maxRegionsAwb is 0.
+ * Otherwise will always be present.</p>
+ * <p>The maximum number of regions supported by the device is determined by the value
+ * of android.control.maxRegionsAwb.</p>
+ * <p>The data representation is int[5 * area_count].
+ * Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
+ * The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
+ * ymax.</p>
+ * <p>The coordinate system is based on the active pixel array,
+ * with (0,0) being the top-left pixel in the active pixel array, and
+ * (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
+ * bottom-right pixel in the active pixel array.</p>
+ * <p>The weight must range from 0 to 1000, and represents a weight
+ * for every pixel in the area. This means that a large metering area
+ * with the same weight as a smaller area will have more effect in
+ * the metering result. Metering areas can partially overlap and the
+ * camera device will add the weights in the overlap region.</p>
+ * <p>The weights are relative to weights of other white balance metering regions, so if
+ * only one region is used, all non-zero weights will have the same effect. A region with
+ * 0 weight is ignored.</p>
+ * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
+ * camera device.</p>
+ * <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
+ * capture result metadata, the camera device will ignore the sections outside the crop
+ * region and output only the intersection rectangle as the metering region in the result
+ * metadata. If the region is entirely outside the crop region, it will be ignored and
+ * not reported in the result metadata.</p>
+ *
+ * @see ACAMERA_SCALER_CROP_REGION
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_CONTROL_AWB_REGIONS = // int32[5*area_count]
+ ACAMERA_CONTROL_START + 12,
+ /**
+ * <p>Information to the camera device 3A (auto-exposure,
+ * auto-focus, auto-white balance) routines about the purpose
+ * of this capture, to help the camera device to decide optimal 3A
+ * strategy.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This control (except for MANUAL) is only effective if
+ * <code>ACAMERA_CONTROL_MODE != OFF</code> and any 3A routine is active.</p>
+ * <p>ZERO_SHUTTER_LAG will be supported if ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ * contains PRIVATE_REPROCESSING or YUV_REPROCESSING. MANUAL will be supported if
+ * ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains MANUAL_SENSOR. Other intent values are
+ * always supported.</p>
+ *
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT = // byte (enum)
+ ACAMERA_CONTROL_START + 13,
+ /**
+ * <p>A special color effect to apply.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When this mode is set, a color effect will be applied
+ * to images produced by the camera device. The interpretation
+ * and implementation of these color effects is left to the
+ * implementor of the camera device, and should not be
+ * depended on to be consistent (or present) across all
+ * devices.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE = // byte (enum)
+ ACAMERA_CONTROL_START + 14,
+ /**
+ * <p>Overall mode of 3A (auto-exposure, auto-white-balance, auto-focus) control
+ * routines.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This is a top-level 3A control switch. When set to OFF, all 3A control
+ * by the camera device is disabled. The application must set the fields for
+ * capture parameters itself.</p>
+ * <p>When set to AUTO, the individual algorithm controls in
+ * ACAMERA_CONTROL_* are in effect, such as ACAMERA_CONTROL_AF_MODE.</p>
+ * <p>When set to USE_SCENE_MODE, the individual controls in
+ * ACAMERA_CONTROL_* are mostly disabled, and the camera device implements
+ * one of the scene mode settings (such as ACTION, SUNSET, or PARTY)
+ * as it wishes. The camera device scene mode 3A settings are provided by
+ * capture results {@link ACameraMetadata} from
+ * {@link ACameraCaptureSession_captureCallback_result}.</p>
+ * <p>When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference
+ * is that this frame will not be used by camera device background 3A statistics
+ * update, as if this frame is never captured. This mode can be used in the scenario
+ * where the application doesn't want a 3A manual control capture to affect
+ * the subsequent auto 3A capture results.</p>
+ *
+ * @see ACAMERA_CONTROL_AF_MODE
+ */
+ ACAMERA_CONTROL_MODE = // byte (enum)
+ ACAMERA_CONTROL_START + 15,
+ /**
+ * <p>Control for which scene mode is currently active.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Scene modes are custom camera modes optimized for a certain set of conditions and
+ * capture settings.</p>
+ * <p>This is the mode that that is active when
+ * <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code>. Aside from FACE_PRIORITY, these modes will
+ * disable ACAMERA_CONTROL_AE_MODE, ACAMERA_CONTROL_AWB_MODE, and ACAMERA_CONTROL_AF_MODE
+ * while in use.</p>
+ * <p>The interpretation and implementation of these scene modes is left
+ * to the implementor of the camera device. Their behavior will not be
+ * consistent across all devices, and any given device may only implement
+ * a subset of these modes.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_CONTROL_AWB_MODE
+ * @see ACAMERA_CONTROL_MODE
+ */
+ ACAMERA_CONTROL_SCENE_MODE = // byte (enum)
+ ACAMERA_CONTROL_START + 16,
+ /**
+ * <p>Whether video stabilization is
+ * active.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Video stabilization automatically warps images from
+ * the camera in order to stabilize motion between consecutive frames.</p>
+ * <p>If enabled, video stabilization can modify the
+ * ACAMERA_SCALER_CROP_REGION to keep the video stream stabilized.</p>
+ * <p>Switching between different video stabilization modes may take several
+ * frames to initialize, the camera device will report the current mode
+ * in capture result metadata. For example, When "ON" mode is requested,
+ * the video stabilization modes in the first several capture results may
+ * still be "OFF", and it will become "ON" when the initialization is
+ * done.</p>
+ * <p>In addition, not all recording sizes or frame rates may be supported for
+ * stabilization by a device that reports stabilization support. It is guaranteed
+ * that an output targeting a MediaRecorder or MediaCodec will be stabilized if
+ * the recording resolution is less than or equal to 1920 x 1080 (width less than
+ * or equal to 1920, height less than or equal to 1080), and the recording
+ * frame rate is less than or equal to 30fps. At other sizes, the CaptureResult
+ * ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE field will return
+ * OFF if the recording output is not stabilized, or if there are no output
+ * Surface types that can be stabilized.</p>
+ * <p>If a camera device supports both this mode and OIS
+ * (ACAMERA_LENS_OPTICAL_STABILIZATION_MODE), turning both modes on may
+ * produce undesirable interaction, so it is recommended not to enable
+ * both at the same time.</p>
+ *
+ * @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+ * @see ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
+ * @see ACAMERA_SCALER_CROP_REGION
+ */
+ ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE = // byte (enum)
+ ACAMERA_CONTROL_START + 17,
+ /**
+ * <p>List of auto-exposure antibanding modes for ACAMERA_CONTROL_AE_ANTIBANDING_MODE that are
+ * supported by this camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Not all of the auto-exposure anti-banding modes may be
+ * supported by a given camera device. This field lists the
+ * valid anti-banding modes that the application may request
+ * for this camera device with the
+ * ACAMERA_CONTROL_AE_ANTIBANDING_MODE control.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+ */
+ ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES = // byte[n]
+ ACAMERA_CONTROL_START + 18,
+ /**
+ * <p>List of auto-exposure modes for ACAMERA_CONTROL_AE_MODE that are supported by this camera
+ * device.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Not all the auto-exposure modes may be supported by a
+ * given camera device, especially if no flash unit is
+ * available. This entry lists the valid modes for
+ * ACAMERA_CONTROL_AE_MODE for this camera device.</p>
+ * <p>All camera devices support ON, and all camera devices with flash
+ * units support ON_AUTO_FLASH and ON_ALWAYS_FLASH.</p>
+ * <p>FULL mode camera devices always support OFF mode,
+ * which enables application control of camera exposure time,
+ * sensitivity, and frame duration.</p>
+ * <p>LEGACY mode camera devices never support OFF mode.
+ * LIMITED mode devices support OFF if they support the MANUAL_SENSOR
+ * capability.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ */
+ ACAMERA_CONTROL_AE_AVAILABLE_MODES = // byte[n]
+ ACAMERA_CONTROL_START + 19,
+ /**
+ * <p>List of frame rate ranges for ACAMERA_CONTROL_AE_TARGET_FPS_RANGE supported by
+ * this camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_TARGET_FPS_RANGE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>For devices at the LEGACY level or above:</p>
+ * <ul>
+ * <li>
+ * <p>For constant-framerate recording, for each normal
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>, that is, a
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a> that has
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#quality">quality</a>
+ * in the range [
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_LOW">QUALITY_LOW</a>,
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_2160P">QUALITY_2160P</a>],
+ * if the profile is supported by the device and has
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate">videoFrameRate</a>
+ * <code>x</code>, this list will always include (<code>x</code>,<code>x</code>).</p>
+ * </li>
+ * <li>
+ * <p>Also, a camera device must either not support any
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>,
+ * or support at least one
+ * normal <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>
+ * that has
+ * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate">videoFrameRate</a> <code>x</code> >= 24.</p>
+ * </li>
+ * </ul>
+ * <p>For devices at the LIMITED level or above:</p>
+ * <ul>
+ * <li>For YUV_420_888 burst capture use case, this list will always include (<code>min</code>, <code>max</code>)
+ * and (<code>max</code>, <code>max</code>) where <code>min</code> <= 15 and <code>max</code> = the maximum output frame rate of the
+ * maximum YUV_420_888 output size.</li>
+ * </ul>
+ */
+ ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES = // int32[2*n]
+ ACAMERA_CONTROL_START + 20,
+ /**
+ * <p>Maximum and minimum exposure compensation values for
+ * ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION, in counts of ACAMERA_CONTROL_AE_COMPENSATION_STEP,
+ * that are supported by this camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_COMPENSATION_STEP
+ * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_CONTROL_AE_COMPENSATION_RANGE = // int32[2]
+ ACAMERA_CONTROL_START + 21,
+ /**
+ * <p>Smallest step by which the exposure compensation
+ * can be changed.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This is the unit for ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION. For example, if this key has
+ * a value of <code>1/2</code>, then a setting of <code>-2</code> for ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION means
+ * that the target EV offset for the auto-exposure routine is -1 EV.</p>
+ * <p>One unit of EV compensation changes the brightness of the captured image by a factor
+ * of two. +1 EV doubles the image brightness, while -1 EV halves the image brightness.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+ */
+ ACAMERA_CONTROL_AE_COMPENSATION_STEP = // rational
+ ACAMERA_CONTROL_START + 22,
+ /**
+ * <p>List of auto-focus (AF) modes for ACAMERA_CONTROL_AF_MODE that are
+ * supported by this camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_AF_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Not all the auto-focus modes may be supported by a
+ * given camera device. This entry lists the valid modes for
+ * ACAMERA_CONTROL_AF_MODE for this camera device.</p>
+ * <p>All LIMITED and FULL mode camera devices will support OFF mode, and all
+ * camera devices with adjustable focuser units
+ * (<code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE > 0</code>) will support AUTO mode.</p>
+ * <p>LEGACY devices will support OFF mode only if they support
+ * focusing to infinity (by also setting ACAMERA_LENS_FOCUS_DISTANCE to
+ * <code>0.0f</code>).</p>
+ *
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+ */
+ ACAMERA_CONTROL_AF_AVAILABLE_MODES = // byte[n]
+ ACAMERA_CONTROL_START + 23,
+ /**
+ * <p>List of color effects for ACAMERA_CONTROL_EFFECT_MODE that are supported by this camera
+ * device.</p>
+ *
+ * @see ACAMERA_CONTROL_EFFECT_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This list contains the color effect modes that can be applied to
+ * images produced by the camera device.
+ * Implementations are not expected to be consistent across all devices.
+ * If no color effect modes are available for a device, this will only list
+ * OFF.</p>
+ * <p>A color effect will only be applied if
+ * ACAMERA_CONTROL_MODE != OFF. OFF is always included in this list.</p>
+ * <p>This control has no effect on the operation of other control routines such
+ * as auto-exposure, white balance, or focus.</p>
+ *
+ * @see ACAMERA_CONTROL_MODE
+ */
+ ACAMERA_CONTROL_AVAILABLE_EFFECTS = // byte[n]
+ ACAMERA_CONTROL_START + 24,
+ /**
+ * <p>List of scene modes for ACAMERA_CONTROL_SCENE_MODE that are supported by this camera
+ * device.</p>
+ *
+ * @see ACAMERA_CONTROL_SCENE_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This list contains scene modes that can be set for the camera device.
+ * Only scene modes that have been fully implemented for the
+ * camera device may be included here. Implementations are not expected
+ * to be consistent across all devices.</p>
+ * <p>If no scene modes are supported by the camera device, this
+ * will be set to DISABLED. Otherwise DISABLED will not be listed.</p>
+ * <p>FACE_PRIORITY is always listed if face detection is
+ * supported (i.e.<code>ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT >
+ * 0</code>).</p>
+ *
+ * @see ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT
+ */
+ ACAMERA_CONTROL_AVAILABLE_SCENE_MODES = // byte[n]
+ ACAMERA_CONTROL_START + 25,
+ /**
+ * <p>List of video stabilization modes for ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+ * that are supported by this camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>OFF will always be listed.</p>
+ */
+ ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES = // byte[n]
+ ACAMERA_CONTROL_START + 26,
+ /**
+ * <p>List of auto-white-balance modes for ACAMERA_CONTROL_AWB_MODE that are supported by this
+ * camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_AWB_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Not all the auto-white-balance modes may be supported by a
+ * given camera device. This entry lists the valid modes for
+ * ACAMERA_CONTROL_AWB_MODE for this camera device.</p>
+ * <p>All camera devices will support ON mode.</p>
+ * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always support OFF
+ * mode, which enables application control of white balance, by using
+ * ACAMERA_COLOR_CORRECTION_TRANSFORM and ACAMERA_COLOR_CORRECTION_GAINS(ACAMERA_COLOR_CORRECTION_MODE must be set to TRANSFORM_MATRIX). This includes all FULL
+ * mode camera devices.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_MODE
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * @see ACAMERA_CONTROL_AWB_MODE
+ */
+ ACAMERA_CONTROL_AWB_AVAILABLE_MODES = // byte[n]
+ ACAMERA_CONTROL_START + 27,
+ /**
+ * <p>List of the maximum number of regions that can be used for metering in
+ * auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF);
+ * this corresponds to the the maximum number of elements in
+ * ACAMERA_CONTROL_AE_REGIONS, ACAMERA_CONTROL_AWB_REGIONS,
+ * and ACAMERA_CONTROL_AF_REGIONS.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_REGIONS
+ * @see ACAMERA_CONTROL_AF_REGIONS
+ * @see ACAMERA_CONTROL_AWB_REGIONS
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_CONTROL_MAX_REGIONS = // int32[3]
+ ACAMERA_CONTROL_START + 28,
+ /**
+ * <p>Current state of the auto-exposure (AE) algorithm.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Switching between or enabling AE modes (ACAMERA_CONTROL_AE_MODE) always
+ * resets the AE state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
+ * or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
+ * the algorithm states to INACTIVE.</p>
+ * <p>The camera device can do several state transitions between two results, if it is
+ * allowed by the state transition table. For example: INACTIVE may never actually be
+ * seen in a result.</p>
+ * <p>The state in the result is the state for this image (in sync with this image): if
+ * AE state becomes CONVERGED, then the image data associated with this result should
+ * be good to use.</p>
+ * <p>Below are state transition tables for different AE modes.</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :------------:|:----------------:|:---------:|:-----------------------:
+ * INACTIVE | | INACTIVE | Camera device auto exposure algorithm is disabled</p>
+ * <p>When ACAMERA_CONTROL_AE_MODE is AE_MODE_ON_*:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-------------:|:--------------------------------------------:|:--------------:|:-----------------:
+ * INACTIVE | Camera device initiates AE scan | SEARCHING | Values changing
+ * INACTIVE | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
+ * SEARCHING | Camera device finishes AE scan | CONVERGED | Good values, not changing
+ * SEARCHING | Camera device finishes AE scan | FLASH_REQUIRED | Converged but too dark w/o flash
+ * SEARCHING | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
+ * CONVERGED | Camera device initiates AE scan | SEARCHING | Values changing
+ * CONVERGED | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
+ * FLASH_REQUIRED | Camera device initiates AE scan | SEARCHING | Values changing
+ * FLASH_REQUIRED | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
+ * LOCKED | ACAMERA_CONTROL_AE_LOCK is OFF | SEARCHING | Values not good after unlock
+ * LOCKED | ACAMERA_CONTROL_AE_LOCK is OFF | CONVERGED | Values good after unlock
+ * LOCKED | ACAMERA_CONTROL_AE_LOCK is OFF | FLASH_REQUIRED | Exposure good, but too dark
+ * PRECAPTURE | Sequence done. ACAMERA_CONTROL_AE_LOCK is OFF | CONVERGED | Ready for high-quality capture
+ * PRECAPTURE | Sequence done. ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Ready for high-quality capture
+ * LOCKED | aeLock is ON and aePrecaptureTrigger is START | LOCKED | Precapture trigger is ignored when AE is already locked
+ * LOCKED | aeLock is ON and aePrecaptureTrigger is CANCEL| LOCKED | Precapture trigger is ignored when AE is already locked
+ * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START | PRECAPTURE | Start AE precapture metering sequence
+ * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL| INACTIVE | Currently active precapture metering sequence is canceled</p>
+ * <p>For the above table, the camera device may skip reporting any state changes that happen
+ * without application intervention (i.e. mode switch, trigger, locking). Any state that
+ * can be skipped in that manner is called a transient state.</p>
+ * <p>For example, for above AE modes (AE_MODE_ON_*), in addition to the state transitions
+ * listed in above table, it is also legal for the camera device to skip one or more
+ * transient states between two results. See below table for examples:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-------------:|:-----------------------------------------------------------:|:--------------:|:-----------------:
+ * INACTIVE | Camera device finished AE scan | CONVERGED | Values are already good, transient states are skipped by camera device.
+ * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence, transient states are skipped by camera device.
+ * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done | CONVERGED | Converged after a precapture sequence, transient states are skipped by camera device.
+ * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence is canceled, transient states are skipped by camera device.
+ * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged | CONVERGED | Converged after a precapture sequenceis canceled, transient states are skipped by camera device.
+ * CONVERGED | Camera device finished AE scan | FLASH_REQUIRED | Converged but too dark w/o flash after a new scan, transient states are skipped by camera device.
+ * FLASH_REQUIRED | Camera device finished AE scan | CONVERGED | Converged after a new scan, transient states are skipped by camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_LOCK
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_CONTROL_SCENE_MODE
+ */
+ ACAMERA_CONTROL_AE_STATE = // byte (enum)
+ ACAMERA_CONTROL_START + 31,
+ /**
+ * <p>Current state of auto-focus (AF) algorithm.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Switching between or enabling AF modes (ACAMERA_CONTROL_AF_MODE) always
+ * resets the AF state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
+ * or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
+ * the algorithm states to INACTIVE.</p>
+ * <p>The camera device can do several state transitions between two results, if it is
+ * allowed by the state transition table. For example: INACTIVE may never actually be
+ * seen in a result.</p>
+ * <p>The state in the result is the state for this image (in sync with this image): if
+ * AF state becomes FOCUSED, then the image data associated with this result should
+ * be sharp.</p>
+ * <p>Below are state transition tables for different AF modes.</p>
+ * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_OFF or AF_MODE_EDOF:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :------------:|:----------------:|:---------:|:-----------:
+ * INACTIVE | | INACTIVE | Never changes</p>
+ * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_AUTO or AF_MODE_MACRO:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-----------------:|:----------------:|:------------------:|:--------------:
+ * INACTIVE | AF_TRIGGER | ACTIVE_SCAN | Start AF sweep, Lens now moving
+ * ACTIVE_SCAN | AF sweep done | FOCUSED_LOCKED | Focused, Lens now locked
+ * ACTIVE_SCAN | AF sweep done | NOT_FOCUSED_LOCKED | Not focused, Lens now locked
+ * ACTIVE_SCAN | AF_CANCEL | INACTIVE | Cancel/reset AF, Lens now locked
+ * FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Cancel/reset AF
+ * FOCUSED_LOCKED | AF_TRIGGER | ACTIVE_SCAN | Start new sweep, Lens now moving
+ * NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Cancel/reset AF
+ * NOT_FOCUSED_LOCKED | AF_TRIGGER | ACTIVE_SCAN | Start new sweep, Lens now moving
+ * Any state | Mode change | INACTIVE |</p>
+ * <p>For the above table, the camera device may skip reporting any state changes that happen
+ * without application intervention (i.e. mode switch, trigger, locking). Any state that
+ * can be skipped in that manner is called a transient state.</p>
+ * <p>For example, for these AF modes (AF_MODE_AUTO and AF_MODE_MACRO), in addition to the
+ * state transitions listed in above table, it is also legal for the camera device to skip
+ * one or more transient states between two results. See below table for examples:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-----------------:|:----------------:|:------------------:|:--------------:
+ * INACTIVE | AF_TRIGGER | FOCUSED_LOCKED | Focus is already good or good after a scan, lens is now locked.
+ * INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | Focus failed after a scan, lens is now locked.
+ * FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | Focus is already good or good after a scan, lens is now locked.
+ * NOT_FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | Focus is good after a scan, lens is not locked.</p>
+ * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_VIDEO:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-----------------:|:-----------------------------------:|:------------------:|:--------------:
+ * INACTIVE | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
+ * INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | AF state query, Lens now locked
+ * PASSIVE_SCAN | Camera device completes current scan| PASSIVE_FOCUSED | End AF scan, Lens now locked
+ * PASSIVE_SCAN | Camera device fails current scan | PASSIVE_UNFOCUSED | End AF scan, Lens now locked
+ * PASSIVE_SCAN | AF_TRIGGER | FOCUSED_LOCKED | Immediate transition, if focus is good. Lens now locked
+ * PASSIVE_SCAN | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate transition, if focus is bad. Lens now locked
+ * PASSIVE_SCAN | AF_CANCEL | INACTIVE | Reset lens position, Lens now locked
+ * PASSIVE_FOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
+ * PASSIVE_UNFOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
+ * PASSIVE_FOCUSED | AF_TRIGGER | FOCUSED_LOCKED | Immediate transition, lens now locked
+ * PASSIVE_UNFOCUSED | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate transition, lens now locked
+ * FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | No effect
+ * FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan
+ * NOT_FOCUSED_LOCKED | AF_TRIGGER | NOT_FOCUSED_LOCKED | No effect
+ * NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan</p>
+ * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_PICTURE:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-----------------:|:------------------------------------:|:------------------:|:--------------:
+ * INACTIVE | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
+ * INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | AF state query, Lens now locked
+ * PASSIVE_SCAN | Camera device completes current scan | PASSIVE_FOCUSED | End AF scan, Lens now locked
+ * PASSIVE_SCAN | Camera device fails current scan | PASSIVE_UNFOCUSED | End AF scan, Lens now locked
+ * PASSIVE_SCAN | AF_TRIGGER | FOCUSED_LOCKED | Eventual transition once the focus is good. Lens now locked
+ * PASSIVE_SCAN | AF_TRIGGER | NOT_FOCUSED_LOCKED | Eventual transition if cannot find focus. Lens now locked
+ * PASSIVE_SCAN | AF_CANCEL | INACTIVE | Reset lens position, Lens now locked
+ * PASSIVE_FOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
+ * PASSIVE_UNFOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
+ * PASSIVE_FOCUSED | AF_TRIGGER | FOCUSED_LOCKED | Immediate trans. Lens now locked
+ * PASSIVE_UNFOCUSED | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate trans. Lens now locked
+ * FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | No effect
+ * FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan
+ * NOT_FOCUSED_LOCKED | AF_TRIGGER | NOT_FOCUSED_LOCKED | No effect
+ * NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan</p>
+ * <p>When switch between AF_MODE_CONTINUOUS_* (CAF modes) and AF_MODE_AUTO/AF_MODE_MACRO
+ * (AUTO modes), the initial INACTIVE or PASSIVE_SCAN states may be skipped by the
+ * camera device. When a trigger is included in a mode switch request, the trigger
+ * will be evaluated in the context of the new mode in the request.
+ * See below table for examples:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-----------:|:--------------------------------------:|:----------------------------------------:|:--------------:
+ * any state | CAF-->AUTO mode switch | INACTIVE | Mode switch without trigger, initial state must be INACTIVE
+ * any state | CAF-->AUTO mode switch with AF_TRIGGER | trigger-reachable states from INACTIVE | Mode switch with trigger, INACTIVE is skipped
+ * any state | AUTO-->CAF mode switch | passively reachable states from INACTIVE | Mode switch without trigger, passive transient state is skipped</p>
+ *
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_CONTROL_SCENE_MODE
+ */
+ ACAMERA_CONTROL_AF_STATE = // byte (enum)
+ ACAMERA_CONTROL_START + 32,
+ /**
+ * <p>Current state of auto-white balance (AWB) algorithm.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Switching between or enabling AWB modes (ACAMERA_CONTROL_AWB_MODE) always
+ * resets the AWB state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
+ * or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
+ * the algorithm states to INACTIVE.</p>
+ * <p>The camera device can do several state transitions between two results, if it is
+ * allowed by the state transition table. So INACTIVE may never actually be seen in
+ * a result.</p>
+ * <p>The state in the result is the state for this image (in sync with this image): if
+ * AWB state becomes CONVERGED, then the image data associated with this result should
+ * be good to use.</p>
+ * <p>Below are state transition tables for different AWB modes.</p>
+ * <p>When <code>ACAMERA_CONTROL_AWB_MODE != AWB_MODE_AUTO</code>:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :------------:|:----------------:|:---------:|:-----------------------:
+ * INACTIVE | |INACTIVE |Camera device auto white balance algorithm is disabled</p>
+ * <p>When ACAMERA_CONTROL_AWB_MODE is AWB_MODE_AUTO:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-------------:|:--------------------------------:|:-------------:|:-----------------:
+ * INACTIVE | Camera device initiates AWB scan | SEARCHING | Values changing
+ * INACTIVE | ACAMERA_CONTROL_AWB_LOCK is ON | LOCKED | Values locked
+ * SEARCHING | Camera device finishes AWB scan | CONVERGED | Good values, not changing
+ * SEARCHING | ACAMERA_CONTROL_AWB_LOCK is ON | LOCKED | Values locked
+ * CONVERGED | Camera device initiates AWB scan | SEARCHING | Values changing
+ * CONVERGED | ACAMERA_CONTROL_AWB_LOCK is ON | LOCKED | Values locked
+ * LOCKED | ACAMERA_CONTROL_AWB_LOCK is OFF | SEARCHING | Values not good after unlock</p>
+ * <p>For the above table, the camera device may skip reporting any state changes that happen
+ * without application intervention (i.e. mode switch, trigger, locking). Any state that
+ * can be skipped in that manner is called a transient state.</p>
+ * <p>For example, for this AWB mode (AWB_MODE_AUTO), in addition to the state transitions
+ * listed in above table, it is also legal for the camera device to skip one or more
+ * transient states between two results. See below table for examples:</p>
+ * <p>State | Transition Cause | New State | Notes
+ * :-------------:|:--------------------------------:|:-------------:|:-----------------:
+ * INACTIVE | Camera device finished AWB scan | CONVERGED | Values are already good, transient states are skipped by camera device.
+ * LOCKED | ACAMERA_CONTROL_AWB_LOCK is OFF | CONVERGED | Values good after unlock, transient states are skipped by camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_AWB_LOCK
+ * @see ACAMERA_CONTROL_AWB_MODE
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_CONTROL_SCENE_MODE
+ */
+ ACAMERA_CONTROL_AWB_STATE = // byte (enum)
+ ACAMERA_CONTROL_START + 34,
+ /**
+ * <p>Whether the camera device supports ACAMERA_CONTROL_AE_LOCK</p>
+ *
+ * @see ACAMERA_CONTROL_AE_LOCK
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Devices with MANUAL_SENSOR capability or BURST_CAPTURE capability will always
+ * list <code>true</code>. This includes FULL devices.</p>
+ */
+ ACAMERA_CONTROL_AE_LOCK_AVAILABLE = // byte (enum)
+ ACAMERA_CONTROL_START + 36,
+ /**
+ * <p>Whether the camera device supports ACAMERA_CONTROL_AWB_LOCK</p>
+ *
+ * @see ACAMERA_CONTROL_AWB_LOCK
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Devices with MANUAL_POST_PROCESSING capability or BURST_CAPTURE capability will
+ * always list <code>true</code>. This includes FULL devices.</p>
+ */
+ ACAMERA_CONTROL_AWB_LOCK_AVAILABLE = // byte (enum)
+ ACAMERA_CONTROL_START + 37,
+ /**
+ * <p>List of control modes for ACAMERA_CONTROL_MODE that are supported by this camera
+ * device.</p>
+ *
+ * @see ACAMERA_CONTROL_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This list contains control modes that can be set for the camera device.
+ * LEGACY mode devices will always support AUTO mode. LIMITED and FULL
+ * devices will always support OFF, AUTO modes.</p>
+ */
+ ACAMERA_CONTROL_AVAILABLE_MODES = // byte[n]
+ ACAMERA_CONTROL_START + 38,
+ /**
+ * <p>Range of boosts for ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST supported
+ * by this camera device.</p>
+ *
+ * @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Devices support post RAW sensitivity boost will advertise
+ * ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST key for controling
+ * post RAW sensitivity boost.</p>
+ * <p>This key will be <code>null</code> for devices that do not support any RAW format
+ * outputs. For devices that do support RAW format outputs, this key will always
+ * present, and if a device does not support post RAW sensitivity boost, it will
+ * list <code>(100, 100)</code> in this key.</p>
+ *
+ * @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
+ */
+ ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE = // int32[2]
+ ACAMERA_CONTROL_START + 39,
+ /**
+ * <p>The amount of additional sensitivity boost applied to output images
+ * after RAW sensor data is captured.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Some camera devices support additional digital sensitivity boosting in the
+ * camera processing pipeline after sensor RAW image is captured.
+ * Such a boost will be applied to YUV/JPEG format output images but will not
+ * have effect on RAW output formats like RAW_SENSOR, RAW10, RAW12 or RAW_OPAQUE.</p>
+ * <p>This key will be <code>null</code> for devices that do not support any RAW format
+ * outputs. For devices that do support RAW format outputs, this key will always
+ * present, and if a device does not support post RAW sensitivity boost, it will
+ * list <code>100</code> in this key.</p>
+ * <p>If the camera device cannot apply the exact boost requested, it will reduce the
+ * boost to the nearest supported value.
+ * The final boost value used will be available in the output capture result.</p>
+ * <p>For devices that support post RAW sensitivity boost, the YUV/JPEG output images
+ * of such device will have the total sensitivity of
+ * <code>ACAMERA_SENSOR_SENSITIVITY * ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST / 100</code>
+ * The sensitivity of RAW format images will always be <code>ACAMERA_SENSOR_SENSITIVITY</code></p>
+ * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+ * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST = // int32
+ ACAMERA_CONTROL_START + 40,
+ /**
+ * <p>Allow camera device to enable zero-shutter-lag mode for requests with
+ * ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE.</p>
+ *
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>If enableZsl is <code>true</code>, the camera device may enable zero-shutter-lag mode for requests with
+ * STILL_CAPTURE capture intent. The camera device may use images captured in the past to
+ * produce output images for a zero-shutter-lag request. The result metadata including the
+ * ACAMERA_SENSOR_TIMESTAMP reflects the source frames used to produce output images.
+ * Therefore, the contents of the output images and the result metadata may be out of order
+ * compared to previous regular requests. enableZsl does not affect requests with other
+ * capture intents.</p>
+ * <p>For example, when requests are submitted in the following order:
+ * Request A: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is PREVIEW
+ * Request B: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is STILL_CAPTURE</p>
+ * <p>The output images for request B may have contents captured before the output images for
+ * request A, and the result metadata for request B may be older than the result metadata for
+ * request A.</p>
+ * <p>Note that when enableZsl is <code>true</code>, it is not guaranteed to get output images captured in the
+ * past for requests with STILL_CAPTURE capture intent.</p>
+ * <p>For applications targeting SDK versions O and newer, the value of enableZsl in
+ * TEMPLATE_STILL_CAPTURE template may be <code>true</code>. The value in other templates is always
+ * <code>false</code> if present.</p>
+ * <p>For applications targeting SDK versions older than O, the value of enableZsl in all
+ * capture templates is always <code>false</code> if present.</p>
+ *
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ * @see ACAMERA_SENSOR_TIMESTAMP
+ */
+ ACAMERA_CONTROL_ENABLE_ZSL = // byte (enum)
+ ACAMERA_CONTROL_START + 41,
+ ACAMERA_CONTROL_END,
+
+ /**
+ * <p>Operation mode for edge
+ * enhancement.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Edge enhancement improves sharpness and details in the captured image. OFF means
+ * no enhancement will be applied by the camera device.</p>
+ * <p>FAST/HIGH_QUALITY both mean camera device determined enhancement
+ * will be applied. HIGH_QUALITY mode indicates that the
+ * camera device will use the highest-quality enhancement algorithms,
+ * even if it slows down capture rate. FAST means the camera device will
+ * not slow down capture rate when applying edge enhancement. FAST may be the same as OFF if
+ * edge enhancement will slow down capture rate. Every output stream will have a similar
+ * amount of enhancement applied.</p>
+ * <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
+ * buffer of high-resolution images during preview and reprocess image(s) from that buffer
+ * into a final capture when triggered by the user. In this mode, the camera device applies
+ * edge enhancement to low-resolution streams (below maximum recording resolution) to
+ * maximize preview quality, but does not apply edge enhancement to high-resolution streams,
+ * since those will be reprocessed later if necessary.</p>
+ * <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera
+ * device will apply FAST/HIGH_QUALITY YUV-domain edge enhancement, respectively.
+ * The camera device may adjust its internal edge enhancement parameters for best
+ * image quality based on the android.reprocess.effectiveExposureFactor, if it is set.</p>
+ */
+ ACAMERA_EDGE_MODE = // byte (enum)
+ ACAMERA_EDGE_START,
+ /**
+ * <p>List of edge enhancement modes for ACAMERA_EDGE_MODE that are supported by this camera
+ * device.</p>
+ *
+ * @see ACAMERA_EDGE_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Full-capability camera devices must always support OFF; camera devices that support
+ * YUV_REPROCESSING or PRIVATE_REPROCESSING will list ZERO_SHUTTER_LAG; all devices will
+ * list FAST.</p>
+ */
+ ACAMERA_EDGE_AVAILABLE_EDGE_MODES = // byte[n]
+ ACAMERA_EDGE_START + 2,
+ ACAMERA_EDGE_END,
+
+ /**
+ * <p>The desired mode for for the camera device's flash control.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This control is only effective when flash unit is available
+ * (<code>ACAMERA_FLASH_INFO_AVAILABLE == true</code>).</p>
+ * <p>When this control is used, the ACAMERA_CONTROL_AE_MODE must be set to ON or OFF.
+ * Otherwise, the camera device auto-exposure related flash control (ON_AUTO_FLASH,
+ * ON_ALWAYS_FLASH, or ON_AUTO_FLASH_REDEYE) will override this control.</p>
+ * <p>When set to OFF, the camera device will not fire flash for this capture.</p>
+ * <p>When set to SINGLE, the camera device will fire flash regardless of the camera
+ * device's auto-exposure routine's result. When used in still capture case, this
+ * control should be used along with auto-exposure (AE) precapture metering sequence
+ * (ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER), otherwise, the image may be incorrectly exposed.</p>
+ * <p>When set to TORCH, the flash will be on continuously. This mode can be used
+ * for use cases such as preview, auto-focus assist, still capture, or video recording.</p>
+ * <p>The flash status will be reported by ACAMERA_FLASH_STATE in the capture result metadata.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_FLASH_INFO_AVAILABLE
+ * @see ACAMERA_FLASH_STATE
+ */
+ ACAMERA_FLASH_MODE = // byte (enum)
+ ACAMERA_FLASH_START + 2,
+ /**
+ * <p>Current state of the flash
+ * unit.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>When the camera device doesn't have flash unit
+ * (i.e. <code>ACAMERA_FLASH_INFO_AVAILABLE == false</code>), this state will always be UNAVAILABLE.
+ * Other states indicate the current flash status.</p>
+ * <p>In certain conditions, this will be available on LEGACY devices:</p>
+ * <ul>
+ * <li>Flash-less cameras always return UNAVAILABLE.</li>
+ * <li>Using ACAMERA_CONTROL_AE_MODE <code>==</code> ON_ALWAYS_FLASH
+ * will always return FIRED.</li>
+ * <li>Using ACAMERA_FLASH_MODE <code>==</code> TORCH
+ * will always return FIRED.</li>
+ * </ul>
+ * <p>In all other conditions the state will not be available on
+ * LEGACY devices (i.e. it will be <code>null</code>).</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_FLASH_INFO_AVAILABLE
+ * @see ACAMERA_FLASH_MODE
+ */
+ ACAMERA_FLASH_STATE = // byte (enum)
+ ACAMERA_FLASH_START + 5,
+ ACAMERA_FLASH_END,
+
+ /**
+ * <p>Whether this camera device has a
+ * flash unit.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Will be <code>false</code> if no flash is available.</p>
+ * <p>If there is no flash unit, none of the flash controls do
+ * anything.</p>
+ */
+ ACAMERA_FLASH_INFO_AVAILABLE = // byte (enum)
+ ACAMERA_FLASH_INFO_START,
+ ACAMERA_FLASH_INFO_END,
+
+ /**
+ * <p>Operational mode for hot pixel correction.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Hotpixel correction interpolates out, or otherwise removes, pixels
+ * that do not accurately measure the incoming light (i.e. pixels that
+ * are stuck at an arbitrary value or are oversensitive).</p>
+ */
+ ACAMERA_HOT_PIXEL_MODE = // byte (enum)
+ ACAMERA_HOT_PIXEL_START,
+ /**
+ * <p>List of hot pixel correction modes for ACAMERA_HOT_PIXEL_MODE that are supported by this
+ * camera device.</p>
+ *
+ * @see ACAMERA_HOT_PIXEL_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>FULL mode camera devices will always support FAST.</p>
+ */
+ ACAMERA_HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES = // byte[n]
+ ACAMERA_HOT_PIXEL_START + 1,
+ ACAMERA_HOT_PIXEL_END,
+
+ /**
+ * <p>GPS coordinates to include in output JPEG
+ * EXIF.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_JPEG_GPS_COORDINATES = // double[3]
+ ACAMERA_JPEG_START,
+ /**
+ * <p>32 characters describing GPS algorithm to
+ * include in EXIF.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_JPEG_GPS_PROCESSING_METHOD = // byte
+ ACAMERA_JPEG_START + 1,
+ /**
+ * <p>Time GPS fix was made to include in
+ * EXIF.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_JPEG_GPS_TIMESTAMP = // int64
+ ACAMERA_JPEG_START + 2,
+ /**
+ * <p>The orientation for a JPEG image.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>The clockwise rotation angle in degrees, relative to the orientation
+ * to the camera, that the JPEG picture needs to be rotated by, to be viewed
+ * upright.</p>
+ * <p>Camera devices may either encode this value into the JPEG EXIF header, or
+ * rotate the image data to match this orientation. When the image data is rotated,
+ * the thumbnail data will also be rotated.</p>
+ * <p>Note that this orientation is relative to the orientation of the camera sensor, given
+ * by ACAMERA_SENSOR_ORIENTATION.</p>
+ * <p>To translate from the device orientation given by the Android sensor APIs, the following
+ * sample code may be used:</p>
+ * <pre><code>private int getJpegOrientation(CameraCharacteristics c, int deviceOrientation) {
+ * if (deviceOrientation == android.view.OrientationEventListener.ORIENTATION_UNKNOWN) return 0;
+ * int sensorOrientation = c.get(CameraCharacteristics.SENSOR_ORIENTATION);
+ *
+ * // Round device orientation to a multiple of 90
+ * deviceOrientation = (deviceOrientation + 45) / 90 * 90;
+ *
+ * // Reverse device orientation for front-facing cameras
+ * boolean facingFront = c.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT;
+ * if (facingFront) deviceOrientation = -deviceOrientation;
+ *
+ * // Calculate desired JPEG orientation relative to camera orientation to make
+ * // the image upright relative to the device orientation
+ * int jpegOrientation = (sensorOrientation + deviceOrientation + 360) % 360;
+ *
+ * return jpegOrientation;
+ * }
+ * </code></pre>
+ *
+ * @see ACAMERA_SENSOR_ORIENTATION
+ */
+ ACAMERA_JPEG_ORIENTATION = // int32
+ ACAMERA_JPEG_START + 3,
+ /**
+ * <p>Compression quality of the final JPEG
+ * image.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>85-95 is typical usage range.</p>
+ */
+ ACAMERA_JPEG_QUALITY = // byte
+ ACAMERA_JPEG_START + 4,
+ /**
+ * <p>Compression quality of JPEG
+ * thumbnail.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_JPEG_THUMBNAIL_QUALITY = // byte
+ ACAMERA_JPEG_START + 5,
+ /**
+ * <p>Resolution of embedded JPEG thumbnail.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When set to (0, 0) value, the JPEG EXIF will not contain thumbnail,
+ * but the captured JPEG will still be a valid image.</p>
+ * <p>For best results, when issuing a request for a JPEG image, the thumbnail size selected
+ * should have the same aspect ratio as the main JPEG output.</p>
+ * <p>If the thumbnail image aspect ratio differs from the JPEG primary image aspect
+ * ratio, the camera device creates the thumbnail by cropping it from the primary image.
+ * For example, if the primary image has 4:3 aspect ratio, the thumbnail image has
+ * 16:9 aspect ratio, the primary image will be cropped vertically (letterbox) to
+ * generate the thumbnail image. The thumbnail image will always have a smaller Field
+ * Of View (FOV) than the primary image when aspect ratios differ.</p>
+ * <p>When an ACAMERA_JPEG_ORIENTATION of non-zero degree is requested,
+ * the camera device will handle thumbnail rotation in one of the following ways:</p>
+ * <ul>
+ * <li>Set the
+ * <a href="https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION">EXIF orientation flag</a>
+ * and keep jpeg and thumbnail image data unrotated.</li>
+ * <li>Rotate the jpeg and thumbnail image data and not set
+ * <a href="https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION">EXIF orientation flag</a>.
+ * In this case, LIMITED or FULL hardware level devices will report rotated thumnail size
+ * in capture result, so the width and height will be interchanged if 90 or 270 degree
+ * orientation is requested. LEGACY device will always report unrotated thumbnail size.</li>
+ * </ul>
+ *
+ * @see ACAMERA_JPEG_ORIENTATION
+ */
+ ACAMERA_JPEG_THUMBNAIL_SIZE = // int32[2]
+ ACAMERA_JPEG_START + 6,
+ /**
+ * <p>List of JPEG thumbnail sizes for ACAMERA_JPEG_THUMBNAIL_SIZE supported by this
+ * camera device.</p>
+ *
+ * @see ACAMERA_JPEG_THUMBNAIL_SIZE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This list will include at least one non-zero resolution, plus <code>(0,0)</code> for indicating no
+ * thumbnail should be generated.</p>
+ * <p>Below condiditions will be satisfied for this size list:</p>
+ * <ul>
+ * <li>The sizes will be sorted by increasing pixel area (width x height).
+ * If several resolutions have the same area, they will be sorted by increasing width.</li>
+ * <li>The aspect ratio of the largest thumbnail size will be same as the
+ * aspect ratio of largest JPEG output size in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS.
+ * The largest size is defined as the size that has the largest pixel area
+ * in a given size list.</li>
+ * <li>Each output JPEG size in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS will have at least
+ * one corresponding size that has the same aspect ratio in availableThumbnailSizes,
+ * and vice versa.</li>
+ * <li>All non-<code>(0, 0)</code> sizes will have non-zero widths and heights.</li>
+ * </ul>
+ *
+ * @see ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+ */
+ ACAMERA_JPEG_AVAILABLE_THUMBNAIL_SIZES = // int32[2*n]
+ ACAMERA_JPEG_START + 7,
+ ACAMERA_JPEG_END,
+
+ /**
+ * <p>The desired lens aperture size, as a ratio of lens focal length to the
+ * effective aperture diameter.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Setting this value is only supported on the camera devices that have a variable
+ * aperture lens.</p>
+ * <p>When this is supported and ACAMERA_CONTROL_AE_MODE is OFF,
+ * this can be set along with ACAMERA_SENSOR_EXPOSURE_TIME,
+ * ACAMERA_SENSOR_SENSITIVITY, and ACAMERA_SENSOR_FRAME_DURATION
+ * to achieve manual exposure control.</p>
+ * <p>The requested aperture value may take several frames to reach the
+ * requested value; the camera device will report the current (intermediate)
+ * aperture size in capture result metadata while the aperture is changing.
+ * While the aperture is still changing, ACAMERA_LENS_STATE will be set to MOVING.</p>
+ * <p>When this is supported and ACAMERA_CONTROL_AE_MODE is one of
+ * the ON modes, this will be overridden by the camera device
+ * auto-exposure algorithm, the overridden values are then provided
+ * back to the user in the corresponding result.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_LENS_STATE
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_LENS_APERTURE = // float
+ ACAMERA_LENS_START,
+ /**
+ * <p>The desired setting for the lens neutral density filter(s).</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This control will not be supported on most camera devices.</p>
+ * <p>Lens filters are typically used to lower the amount of light the
+ * sensor is exposed to (measured in steps of EV). As used here, an EV
+ * step is the standard logarithmic representation, which are
+ * non-negative, and inversely proportional to the amount of light
+ * hitting the sensor. For example, setting this to 0 would result
+ * in no reduction of the incoming light, and setting this to 2 would
+ * mean that the filter is set to reduce incoming light by two stops
+ * (allowing 1/4 of the prior amount of light to the sensor).</p>
+ * <p>It may take several frames before the lens filter density changes
+ * to the requested value. While the filter density is still changing,
+ * ACAMERA_LENS_STATE will be set to MOVING.</p>
+ *
+ * @see ACAMERA_LENS_STATE
+ */
+ ACAMERA_LENS_FILTER_DENSITY = // float
+ ACAMERA_LENS_START + 1,
+ /**
+ * <p>The desired lens focal length; used for optical zoom.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This setting controls the physical focal length of the camera
+ * device's lens. Changing the focal length changes the field of
+ * view of the camera device, and is usually used for optical zoom.</p>
+ * <p>Like ACAMERA_LENS_FOCUS_DISTANCE and ACAMERA_LENS_APERTURE, this
+ * setting won't be applied instantaneously, and it may take several
+ * frames before the lens can change to the requested focal length.
+ * While the focal length is still changing, ACAMERA_LENS_STATE will
+ * be set to MOVING.</p>
+ * <p>Optical zoom will not be supported on most devices.</p>
+ *
+ * @see ACAMERA_LENS_APERTURE
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ * @see ACAMERA_LENS_STATE
+ */
+ ACAMERA_LENS_FOCAL_LENGTH = // float
+ ACAMERA_LENS_START + 2,
+ /**
+ * <p>Desired distance to plane of sharpest focus,
+ * measured from frontmost surface of the lens.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Should be zero for fixed-focus cameras</p>
+ */
+ ACAMERA_LENS_FOCUS_DISTANCE = // float
+ ACAMERA_LENS_START + 3,
+ /**
+ * <p>Sets whether the camera device uses optical image stabilization (OIS)
+ * when capturing images.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>OIS is used to compensate for motion blur due to small
+ * movements of the camera during capture. Unlike digital image
+ * stabilization (ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE), OIS
+ * makes use of mechanical elements to stabilize the camera
+ * sensor, and thus allows for longer exposure times before
+ * camera shake becomes apparent.</p>
+ * <p>Switching between different optical stabilization modes may take several
+ * frames to initialize, the camera device will report the current mode in
+ * capture result metadata. For example, When "ON" mode is requested, the
+ * optical stabilization modes in the first several capture results may still
+ * be "OFF", and it will become "ON" when the initialization is done.</p>
+ * <p>If a camera device supports both OIS and digital image stabilization
+ * (ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE), turning both modes on may produce undesirable
+ * interaction, so it is recommended not to enable both at the same time.</p>
+ * <p>Not all devices will support OIS; see
+ * ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION for
+ * available controls.</p>
+ *
+ * @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+ * @see ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
+ */
+ ACAMERA_LENS_OPTICAL_STABILIZATION_MODE = // byte (enum)
+ ACAMERA_LENS_START + 4,
+ /**
+ * <p>Direction the camera faces relative to
+ * device screen.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_LENS_FACING = // byte (enum)
+ ACAMERA_LENS_START + 5,
+ /**
+ * <p>The orientation of the camera relative to the sensor
+ * coordinate system.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The four coefficients that describe the quaternion
+ * rotation from the Android sensor coordinate system to a
+ * camera-aligned coordinate system where the X-axis is
+ * aligned with the long side of the image sensor, the Y-axis
+ * is aligned with the short side of the image sensor, and
+ * the Z-axis is aligned with the optical axis of the sensor.</p>
+ * <p>To convert from the quaternion coefficients <code>(x,y,z,w)</code>
+ * to the axis of rotation <code>(a_x, a_y, a_z)</code> and rotation
+ * amount <code>theta</code>, the following formulas can be used:</p>
+ * <pre><code> theta = 2 * acos(w)
+ * a_x = x / sin(theta/2)
+ * a_y = y / sin(theta/2)
+ * a_z = z / sin(theta/2)
+ * </code></pre>
+ * <p>To create a 3x3 rotation matrix that applies the rotation
+ * defined by this quaternion, the following matrix can be
+ * used:</p>
+ * <pre><code>R = [ 1 - 2y^2 - 2z^2, 2xy - 2zw, 2xz + 2yw,
+ * 2xy + 2zw, 1 - 2x^2 - 2z^2, 2yz - 2xw,
+ * 2xz - 2yw, 2yz + 2xw, 1 - 2x^2 - 2y^2 ]
+ * </code></pre>
+ * <p>This matrix can then be used to apply the rotation to a
+ * column vector point with</p>
+ * <p><code>p' = Rp</code></p>
+ * <p>where <code>p</code> is in the device sensor coordinate system, and
+ * <code>p'</code> is in the camera-oriented coordinate system.</p>
+ */
+ ACAMERA_LENS_POSE_ROTATION = // float[4]
+ ACAMERA_LENS_START + 6,
+ /**
+ * <p>Position of the camera optical center.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The position of the camera device's lens optical center,
+ * as a three-dimensional vector <code>(x,y,z)</code>, relative to the
+ * optical center of the largest camera device facing in the
+ * same direction as this camera, in the
+ * <a href="https://developer.android.com/reference/android/hardware/SensorEvent.html">Android sensor coordinate axes</a>.
+ * Note that only the axis definitions are shared with
+ * the sensor coordinate system, but not the origin.</p>
+ * <p>If this device is the largest or only camera device with a
+ * given facing, then this position will be <code>(0, 0, 0)</code>; a
+ * camera device with a lens optical center located 3 cm from
+ * the main sensor along the +X axis (to the right from the
+ * user's perspective) will report <code>(0.03, 0, 0)</code>.</p>
+ * <p>To transform a pixel coordinates between two cameras
+ * facing the same direction, first the source camera
+ * ACAMERA_LENS_RADIAL_DISTORTION must be corrected for. Then
+ * the source camera ACAMERA_LENS_INTRINSIC_CALIBRATION needs
+ * to be applied, followed by the ACAMERA_LENS_POSE_ROTATION
+ * of the source camera, the translation of the source camera
+ * relative to the destination camera, the
+ * ACAMERA_LENS_POSE_ROTATION of the destination camera, and
+ * finally the inverse of ACAMERA_LENS_INTRINSIC_CALIBRATION
+ * of the destination camera. This obtains a
+ * radial-distortion-free coordinate in the destination
+ * camera pixel coordinates.</p>
+ * <p>To compare this against a real image from the destination
+ * camera, the destination camera image then needs to be
+ * corrected for radial distortion before comparison or
+ * sampling.</p>
+ *
+ * @see ACAMERA_LENS_INTRINSIC_CALIBRATION
+ * @see ACAMERA_LENS_POSE_ROTATION
+ * @see ACAMERA_LENS_RADIAL_DISTORTION
+ */
+ ACAMERA_LENS_POSE_TRANSLATION = // float[3]
+ ACAMERA_LENS_START + 7,
+ /**
+ * <p>The range of scene distances that are in
+ * sharp focus (depth of field).</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>If variable focus not supported, can still report
+ * fixed depth of field range</p>
+ */
+ ACAMERA_LENS_FOCUS_RANGE = // float[2]
+ ACAMERA_LENS_START + 8,
+ /**
+ * <p>Current lens status.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>For lens parameters ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
+ * ACAMERA_LENS_FILTER_DENSITY and ACAMERA_LENS_APERTURE, when changes are requested,
+ * they may take several frames to reach the requested values. This state indicates
+ * the current status of the lens parameters.</p>
+ * <p>When the state is STATIONARY, the lens parameters are not changing. This could be
+ * either because the parameters are all fixed, or because the lens has had enough
+ * time to reach the most recently-requested values.
+ * If all these lens parameters are not changable for a camera device, as listed below:</p>
+ * <ul>
+ * <li>Fixed focus (<code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE == 0</code>), which means
+ * ACAMERA_LENS_FOCUS_DISTANCE parameter will always be 0.</li>
+ * <li>Fixed focal length (ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS contains single value),
+ * which means the optical zoom is not supported.</li>
+ * <li>No ND filter (ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES contains only 0).</li>
+ * <li>Fixed aperture (ACAMERA_LENS_INFO_AVAILABLE_APERTURES contains single value).</li>
+ * </ul>
+ * <p>Then this state will always be STATIONARY.</p>
+ * <p>When the state is MOVING, it indicates that at least one of the lens parameters
+ * is changing.</p>
+ *
+ * @see ACAMERA_LENS_APERTURE
+ * @see ACAMERA_LENS_FILTER_DENSITY
+ * @see ACAMERA_LENS_FOCAL_LENGTH
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ * @see ACAMERA_LENS_INFO_AVAILABLE_APERTURES
+ * @see ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES
+ * @see ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS
+ * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+ */
+ ACAMERA_LENS_STATE = // byte (enum)
+ ACAMERA_LENS_START + 9,
+ /**
+ * <p>The parameters for this camera device's intrinsic
+ * calibration.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The five calibration parameters that describe the
+ * transform from camera-centric 3D coordinates to sensor
+ * pixel coordinates:</p>
+ * <pre><code>[f_x, f_y, c_x, c_y, s]
+ * </code></pre>
+ * <p>Where <code>f_x</code> and <code>f_y</code> are the horizontal and vertical
+ * focal lengths, <code>[c_x, c_y]</code> is the position of the optical
+ * axis, and <code>s</code> is a skew parameter for the sensor plane not
+ * being aligned with the lens plane.</p>
+ * <p>These are typically used within a transformation matrix K:</p>
+ * <pre><code>K = [ f_x, s, c_x,
+ * 0, f_y, c_y,
+ * 0 0, 1 ]
+ * </code></pre>
+ * <p>which can then be combined with the camera pose rotation
+ * <code>R</code> and translation <code>t</code> (ACAMERA_LENS_POSE_ROTATION and
+ * ACAMERA_LENS_POSE_TRANSLATION, respective) to calculate the
+ * complete transform from world coordinates to pixel
+ * coordinates:</p>
+ * <pre><code>P = [ K 0 * [ R t
+ * 0 1 ] 0 1 ]
+ * </code></pre>
+ * <p>and with <code>p_w</code> being a point in the world coordinate system
+ * and <code>p_s</code> being a point in the camera active pixel array
+ * coordinate system, and with the mapping including the
+ * homogeneous division by z:</p>
+ * <pre><code> p_h = (x_h, y_h, z_h) = P p_w
+ * p_s = p_h / z_h
+ * </code></pre>
+ * <p>so <code>[x_s, y_s]</code> is the pixel coordinates of the world
+ * point, <code>z_s = 1</code>, and <code>w_s</code> is a measurement of disparity
+ * (depth) in pixel coordinates.</p>
+ * <p>Note that the coordinate system for this transform is the
+ * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE system,
+ * where <code>(0,0)</code> is the top-left of the
+ * preCorrectionActiveArraySize rectangle. Once the pose and
+ * intrinsic calibration transforms have been applied to a
+ * world point, then the ACAMERA_LENS_RADIAL_DISTORTION
+ * transform needs to be applied, and the result adjusted to
+ * be in the ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE coordinate
+ * system (where <code>(0, 0)</code> is the top-left of the
+ * activeArraySize rectangle), to determine the final pixel
+ * coordinate of the world point for processed (non-RAW)
+ * output buffers.</p>
+ *
+ * @see ACAMERA_LENS_POSE_ROTATION
+ * @see ACAMERA_LENS_POSE_TRANSLATION
+ * @see ACAMERA_LENS_RADIAL_DISTORTION
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_LENS_INTRINSIC_CALIBRATION = // float[5]
+ ACAMERA_LENS_START + 10,
+ /**
+ * <p>The correction coefficients to correct for this camera device's
+ * radial and tangential lens distortion.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Four radial distortion coefficients <code>[kappa_0, kappa_1, kappa_2,
+ * kappa_3]</code> and two tangential distortion coefficients
+ * <code>[kappa_4, kappa_5]</code> that can be used to correct the
+ * lens's geometric distortion with the mapping equations:</p>
+ * <pre><code> x_c = x_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
+ * kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
+ * y_c = y_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
+ * kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )
+ * </code></pre>
+ * <p>Here, <code>[x_c, y_c]</code> are the coordinates to sample in the
+ * input image that correspond to the pixel values in the
+ * corrected image at the coordinate <code>[x_i, y_i]</code>:</p>
+ * <pre><code> correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
+ * </code></pre>
+ * <p>The pixel coordinates are defined in a normalized
+ * coordinate system related to the
+ * ACAMERA_LENS_INTRINSIC_CALIBRATION calibration fields.
+ * Both <code>[x_i, y_i]</code> and <code>[x_c, y_c]</code> have <code>(0,0)</code> at the
+ * lens optical center <code>[c_x, c_y]</code>. The maximum magnitudes
+ * of both x and y coordinates are normalized to be 1 at the
+ * edge further from the optical center, so the range
+ * for both dimensions is <code>-1 <= x <= 1</code>.</p>
+ * <p>Finally, <code>r</code> represents the radial distance from the
+ * optical center, <code>r^2 = x_i^2 + y_i^2</code>, and its magnitude
+ * is therefore no larger than <code>|r| <= sqrt(2)</code>.</p>
+ * <p>The distortion model used is the Brown-Conrady model.</p>
+ *
+ * @see ACAMERA_LENS_INTRINSIC_CALIBRATION
+ */
+ ACAMERA_LENS_RADIAL_DISTORTION = // float[6]
+ ACAMERA_LENS_START + 11,
+ ACAMERA_LENS_END,
+
+ /**
+ * <p>List of aperture size values for ACAMERA_LENS_APERTURE that are
+ * supported by this camera device.</p>
+ *
+ * @see ACAMERA_LENS_APERTURE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If the camera device doesn't support a variable lens aperture,
+ * this list will contain only one value, which is the fixed aperture size.</p>
+ * <p>If the camera device supports a variable aperture, the aperture values
+ * in this list will be sorted in ascending order.</p>
+ */
+ ACAMERA_LENS_INFO_AVAILABLE_APERTURES = // float[n]
+ ACAMERA_LENS_INFO_START,
+ /**
+ * <p>List of neutral density filter values for
+ * ACAMERA_LENS_FILTER_DENSITY that are supported by this camera device.</p>
+ *
+ * @see ACAMERA_LENS_FILTER_DENSITY
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If a neutral density filter is not supported by this camera device,
+ * this list will contain only 0. Otherwise, this list will include every
+ * filter density supported by the camera device, in ascending order.</p>
+ */
+ ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES = // float[n]
+ ACAMERA_LENS_INFO_START + 1,
+ /**
+ * <p>List of focal lengths for ACAMERA_LENS_FOCAL_LENGTH that are supported by this camera
+ * device.</p>
+ *
+ * @see ACAMERA_LENS_FOCAL_LENGTH
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If optical zoom is not supported, this list will only contain
+ * a single value corresponding to the fixed focal length of the
+ * device. Otherwise, this list will include every focal length supported
+ * by the camera device, in ascending order.</p>
+ */
+ ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS = // float[n]
+ ACAMERA_LENS_INFO_START + 2,
+ /**
+ * <p>List of optical image stabilization (OIS) modes for
+ * ACAMERA_LENS_OPTICAL_STABILIZATION_MODE that are supported by this camera device.</p>
+ *
+ * @see ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If OIS is not supported by a given camera device, this list will
+ * contain only OFF.</p>
+ */
+ ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION = // byte[n]
+ ACAMERA_LENS_INFO_START + 3,
+ /**
+ * <p>Hyperfocal distance for this lens.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If the lens is not fixed focus, the camera device will report this
+ * field when ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION is APPROXIMATE or CALIBRATED.</p>
+ *
+ * @see ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
+ */
+ ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE = // float
+ ACAMERA_LENS_INFO_START + 4,
+ /**
+ * <p>Shortest distance from frontmost surface
+ * of the lens that can be brought into sharp focus.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If the lens is fixed-focus, this will be
+ * 0.</p>
+ */
+ ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE = // float
+ ACAMERA_LENS_INFO_START + 5,
+ /**
+ * <p>Dimensions of lens shading map.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The map should be on the order of 30-40 rows and columns, and
+ * must be smaller than 64x64.</p>
+ */
+ ACAMERA_LENS_INFO_SHADING_MAP_SIZE = // int32[2]
+ ACAMERA_LENS_INFO_START + 6,
+ /**
+ * <p>The lens focus distance calibration quality.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The lens focus distance calibration quality determines the reliability of
+ * focus related metadata entries, i.e. ACAMERA_LENS_FOCUS_DISTANCE,
+ * ACAMERA_LENS_FOCUS_RANGE, ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE, and
+ * ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE.</p>
+ * <p>APPROXIMATE and CALIBRATED devices report the focus metadata in
+ * units of diopters (1/meter), so <code>0.0f</code> represents focusing at infinity,
+ * and increasing positive numbers represent focusing closer and closer
+ * to the camera device. The focus distance control also uses diopters
+ * on these devices.</p>
+ * <p>UNCALIBRATED devices do not use units that are directly comparable
+ * to any real physical measurement, but <code>0.0f</code> still represents farthest
+ * focus, and ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE represents the
+ * nearest focus the device can achieve.</p>
+ *
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ * @see ACAMERA_LENS_FOCUS_RANGE
+ * @see ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE
+ * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+ */
+ ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION = // byte (enum)
+ ACAMERA_LENS_INFO_START + 7,
+ ACAMERA_LENS_INFO_END,
+
+ /**
+ * <p>Mode of operation for the noise reduction algorithm.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>The noise reduction algorithm attempts to improve image quality by removing
+ * excessive noise added by the capture process, especially in dark conditions.</p>
+ * <p>OFF means no noise reduction will be applied by the camera device, for both raw and
+ * YUV domain.</p>
+ * <p>MINIMAL means that only sensor raw domain basic noise reduction is enabled ,to remove
+ * demosaicing or other processing artifacts. For YUV_REPROCESSING, MINIMAL is same as OFF.
+ * This mode is optional, may not be support by all devices. The application should check
+ * ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES before using it.</p>
+ * <p>FAST/HIGH_QUALITY both mean camera device determined noise filtering
+ * will be applied. HIGH_QUALITY mode indicates that the camera device
+ * will use the highest-quality noise filtering algorithms,
+ * even if it slows down capture rate. FAST means the camera device will not
+ * slow down capture rate when applying noise filtering. FAST may be the same as MINIMAL if
+ * MINIMAL is listed, or the same as OFF if any noise filtering will slow down capture rate.
+ * Every output stream will have a similar amount of enhancement applied.</p>
+ * <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
+ * buffer of high-resolution images during preview and reprocess image(s) from that buffer
+ * into a final capture when triggered by the user. In this mode, the camera device applies
+ * noise reduction to low-resolution streams (below maximum recording resolution) to maximize
+ * preview quality, but does not apply noise reduction to high-resolution streams, since
+ * those will be reprocessed later if necessary.</p>
+ * <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera device
+ * will apply FAST/HIGH_QUALITY YUV domain noise reduction, respectively. The camera device
+ * may adjust the noise reduction parameters for best image quality based on the
+ * android.reprocess.effectiveExposureFactor if it is set.</p>
+ *
+ * @see ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
+ */
+ ACAMERA_NOISE_REDUCTION_MODE = // byte (enum)
+ ACAMERA_NOISE_REDUCTION_START,
+ /**
+ * <p>List of noise reduction modes for ACAMERA_NOISE_REDUCTION_MODE that are supported
+ * by this camera device.</p>
+ *
+ * @see ACAMERA_NOISE_REDUCTION_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Full-capability camera devices will always support OFF and FAST.</p>
+ * <p>Camera devices that support YUV_REPROCESSING or PRIVATE_REPROCESSING will support
+ * ZERO_SHUTTER_LAG.</p>
+ * <p>Legacy-capability camera devices will only support FAST mode.</p>
+ */
+ ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES = // byte[n]
+ ACAMERA_NOISE_REDUCTION_START + 2,
+ ACAMERA_NOISE_REDUCTION_END,
+
+ /**
+ * <p>The maximum numbers of different types of output streams
+ * that can be configured and used simultaneously by a camera device.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This is a 3 element tuple that contains the max number of output simultaneous
+ * streams for raw sensor, processed (but not stalling), and processed (and stalling)
+ * formats respectively. For example, assuming that JPEG is typically a processed and
+ * stalling stream, if max raw sensor format output stream number is 1, max YUV streams
+ * number is 3, and max JPEG stream number is 2, then this tuple should be <code>(1, 3, 2)</code>.</p>
+ * <p>This lists the upper bound of the number of output streams supported by
+ * the camera device. Using more streams simultaneously may require more hardware and
+ * CPU resources that will consume more power. The image format for an output stream can
+ * be any supported format provided by ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS.
+ * The formats defined in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS can be catergorized
+ * into the 3 stream types as below:</p>
+ * <ul>
+ * <li>Processed (but stalling): any non-RAW format with a stallDurations > 0.
+ * Typically {@link AIMAGE_FORMAT_JPEG} format.</li>
+ * <li>Raw formats: {@link AIMAGE_FORMAT_RAW16}, {@link AIMAGE_FORMAT_RAW10}, or
+ * {@link AIMAGE_FORMAT_RAW12}.</li>
+ * <li>Processed (but not-stalling): any non-RAW format without a stall duration.
+ * Typically {@link AIMAGE_FORMAT_YUV_420_888}.</li>
+ * </ul>
+ *
+ * @see ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+ */
+ ACAMERA_REQUEST_MAX_NUM_OUTPUT_STREAMS = // int32[3]
+ ACAMERA_REQUEST_START + 6,
+ /**
+ * <p>Specifies the number of pipeline stages the frame went
+ * through from when it was exposed to when the final completed result
+ * was available to the framework.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Depending on what settings are used in the request, and
+ * what streams are configured, the data may undergo less processing,
+ * and some pipeline stages skipped.</p>
+ * <p>See ACAMERA_REQUEST_PIPELINE_MAX_DEPTH for more details.</p>
+ *
+ * @see ACAMERA_REQUEST_PIPELINE_MAX_DEPTH
+ */
+ ACAMERA_REQUEST_PIPELINE_DEPTH = // byte
+ ACAMERA_REQUEST_START + 9,
+ /**
+ * <p>Specifies the number of maximum pipeline stages a frame
+ * has to go through from when it's exposed to when it's available
+ * to the framework.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>A typical minimum value for this is 2 (one stage to expose,
+ * one stage to readout) from the sensor. The ISP then usually adds
+ * its own stages to do custom HW processing. Further stages may be
+ * added by SW processing.</p>
+ * <p>Depending on what settings are used (e.g. YUV, JPEG) and what
+ * processing is enabled (e.g. face detection), the actual pipeline
+ * depth (specified by ACAMERA_REQUEST_PIPELINE_DEPTH) may be less than
+ * the max pipeline depth.</p>
+ * <p>A pipeline depth of X stages is equivalent to a pipeline latency of
+ * X frame intervals.</p>
+ * <p>This value will normally be 8 or less, however, for high speed capture session,
+ * the max pipeline depth will be up to 8 x size of high speed capture request list.</p>
+ *
+ * @see ACAMERA_REQUEST_PIPELINE_DEPTH
+ */
+ ACAMERA_REQUEST_PIPELINE_MAX_DEPTH = // byte
+ ACAMERA_REQUEST_START + 10,
+ /**
+ * <p>Defines how many sub-components
+ * a result will be composed of.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>In order to combat the pipeline latency, partial results
+ * may be delivered to the application layer from the camera device as
+ * soon as they are available.</p>
+ * <p>Optional; defaults to 1. A value of 1 means that partial
+ * results are not supported, and only the final TotalCaptureResult will
+ * be produced by the camera device.</p>
+ * <p>A typical use case for this might be: after requesting an
+ * auto-focus (AF) lock the new AF state might be available 50%
+ * of the way through the pipeline. The camera device could
+ * then immediately dispatch this state via a partial result to
+ * the application, and the rest of the metadata via later
+ * partial results.</p>
+ */
+ ACAMERA_REQUEST_PARTIAL_RESULT_COUNT = // int32
+ ACAMERA_REQUEST_START + 11,
+ /**
+ * <p>List of capabilities that this camera device
+ * advertises as fully supporting.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>A capability is a contract that the camera device makes in order
+ * to be able to satisfy one or more use cases.</p>
+ * <p>Listing a capability guarantees that the whole set of features
+ * required to support a common use will all be available.</p>
+ * <p>Using a subset of the functionality provided by an unsupported
+ * capability may be possible on a specific camera device implementation;
+ * to do this query each of ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS,
+ * ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS,
+ * ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS.</p>
+ * <p>The following capabilities are guaranteed to be available on
+ * ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL <code>==</code> FULL devices:</p>
+ * <ul>
+ * <li>MANUAL_SENSOR</li>
+ * <li>MANUAL_POST_PROCESSING</li>
+ * </ul>
+ * <p>Other capabilities may be available on either FULL or LIMITED
+ * devices, but the application should query this key to be sure.</p>
+ *
+ * @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+ * @see ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS
+ * @see ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS
+ * @see ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES = // byte[n] (enum)
+ ACAMERA_REQUEST_START + 12,
+ /**
+ * <p>A list of all keys that the camera device has available
+ * to use with {@link ACaptureRequest}.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Attempting to set a key into a CaptureRequest that is not
+ * listed here will result in an invalid request and will be rejected
+ * by the camera device.</p>
+ * <p>This field can be used to query the feature set of a camera device
+ * at a more granular level than capabilities. This is especially
+ * important for optional keys that are not listed under any capability
+ * in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ */
+ ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS = // int32[n]
+ ACAMERA_REQUEST_START + 13,
+ /**
+ * <p>A list of all keys that the camera device has available
+ * to query with {@link ACameraMetadata} from
+ * {@link ACameraCaptureSession_captureCallback_result}.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Attempting to get a key from a CaptureResult that is not
+ * listed here will always return a <code>null</code> value. Getting a key from
+ * a CaptureResult that is listed here will generally never return a <code>null</code>
+ * value.</p>
+ * <p>The following keys may return <code>null</code> unless they are enabled:</p>
+ * <ul>
+ * <li>ACAMERA_STATISTICS_LENS_SHADING_MAP (non-null iff ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE == ON)</li>
+ * </ul>
+ * <p>(Those sometimes-null keys will nevertheless be listed here
+ * if they are available.)</p>
+ * <p>This field can be used to query the feature set of a camera device
+ * at a more granular level than capabilities. This is especially
+ * important for optional keys that are not listed under any capability
+ * in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+ */
+ ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS = // int32[n]
+ ACAMERA_REQUEST_START + 14,
+ /**
+ * <p>A list of all keys that the camera device has available
+ * to query with {@link ACameraMetadata} from
+ * {@link ACameraManager_getCameraCharacteristics}.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This entry follows the same rules as
+ * ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS (except that it applies for
+ * CameraCharacteristics instead of CaptureResult). See above for more
+ * details.</p>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS
+ */
+ ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS = // int32[n]
+ ACAMERA_REQUEST_START + 15,
+ ACAMERA_REQUEST_END,
+
+ /**
+ * <p>The desired region of the sensor to read out for this capture.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>This control can be used to implement digital zoom.</p>
+ * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+ * <p>The crop region coordinate system is based off
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with <code>(0, 0)</code> being the
+ * top-left corner of the sensor active array.</p>
+ * <p>Output streams use this rectangle to produce their output,
+ * cropping to a smaller region if necessary to maintain the
+ * stream's aspect ratio, then scaling the sensor input to
+ * match the output's configured resolution.</p>
+ * <p>The crop region is applied after the RAW to other color
+ * space (e.g. YUV) conversion. Since raw streams
+ * (e.g. RAW16) don't have the conversion stage, they are not
+ * croppable. The crop region will be ignored by raw streams.</p>
+ * <p>For non-raw streams, any additional per-stream cropping will
+ * be done to maximize the final pixel area of the stream.</p>
+ * <p>For example, if the crop region is set to a 4:3 aspect
+ * ratio, then 4:3 streams will use the exact crop
+ * region. 16:9 streams will further crop vertically
+ * (letterbox).</p>
+ * <p>Conversely, if the crop region is set to a 16:9, then 4:3
+ * outputs will crop horizontally (pillarbox), and 16:9
+ * streams will match exactly. These additional crops will
+ * be centered within the crop region.</p>
+ * <p>The width and height of the crop region cannot
+ * be set to be smaller than
+ * <code>floor( activeArraySize.width / ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM )</code> and
+ * <code>floor( activeArraySize.height / ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM )</code>, respectively.</p>
+ * <p>The camera device may adjust the crop region to account
+ * for rounding and other hardware requirements; the final
+ * crop region used will be included in the output capture
+ * result.</p>
+ *
+ * @see ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_SCALER_CROP_REGION = // int32[4]
+ ACAMERA_SCALER_START,
+ /**
+ * <p>The maximum ratio between both active area width
+ * and crop region width, and active area height and
+ * crop region height, for ACAMERA_SCALER_CROP_REGION.</p>
+ *
+ * @see ACAMERA_SCALER_CROP_REGION
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This represents the maximum amount of zooming possible by
+ * the camera device, or equivalently, the minimum cropping
+ * window size.</p>
+ * <p>Crop regions that have a width or height that is smaller
+ * than this ratio allows will be rounded up to the minimum
+ * allowed size by the camera device.</p>
+ */
+ ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM = // float
+ ACAMERA_SCALER_START + 4,
+ /**
+ * <p>The available stream configurations that this
+ * camera device supports
+ * (i.e. format, width, height, output/input stream).</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The configurations are listed as <code>(format, width, height, input?)</code>
+ * tuples.</p>
+ * <p>For a given use case, the actual maximum supported resolution
+ * may be lower than what is listed here, depending on the destination
+ * Surface for the image data. For example, for recording video,
+ * the video encoder chosen may have a maximum size limit (e.g. 1080p)
+ * smaller than what the camera (e.g. maximum resolution is 3264x2448)
+ * can provide.</p>
+ * <p>Please reference the documentation for the image data destination to
+ * check if it limits the maximum size for image data.</p>
+ * <p>Not all output formats may be supported in a configuration with
+ * an input stream of a particular format. For more details, see
+ * android.scaler.availableInputOutputFormatsMap.</p>
+ * <p>The following table describes the minimum required output stream
+ * configurations based on the hardware level
+ * (ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL):</p>
+ * <p>Format | Size | Hardware Level | Notes
+ * :-------------:|:--------------------------------------------:|:--------------:|:--------------:
+ * JPEG | ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE | Any |
+ * JPEG | 1920x1080 (1080p) | Any | if 1080p <= activeArraySize
+ * JPEG | 1280x720 (720) | Any | if 720p <= activeArraySize
+ * JPEG | 640x480 (480p) | Any | if 480p <= activeArraySize
+ * JPEG | 320x240 (240p) | Any | if 240p <= activeArraySize
+ * YUV_420_888 | all output sizes available for JPEG | FULL |
+ * YUV_420_888 | all output sizes available for JPEG, up to the maximum video size | LIMITED |
+ * IMPLEMENTATION_DEFINED | same as YUV_420_888 | Any |</p>
+ * <p>Refer to ACAMERA_REQUEST_AVAILABLE_CAPABILITIES for additional
+ * mandatory stream configurations on a per-capability basis.</p>
+ *
+ * @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS = // int32[n*4] (enum)
+ ACAMERA_SCALER_START + 10,
+ /**
+ * <p>This lists the minimum frame duration for each
+ * format/size combination.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This should correspond to the frame duration when only that
+ * stream is active, with all processing (typically in android.*.mode)
+ * set to either OFF or FAST.</p>
+ * <p>When multiple streams are used in a request, the minimum frame
+ * duration will be max(individual stream min durations).</p>
+ * <p>The minimum frame duration of a stream (of a particular format, size)
+ * is the same regardless of whether the stream is input or output.</p>
+ * <p>See ACAMERA_SENSOR_FRAME_DURATION and
+ * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for more details about
+ * calculating the max frame rate.</p>
+ *
+ * @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ */
+ ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS = // int64[4*n]
+ ACAMERA_SCALER_START + 11,
+ /**
+ * <p>This lists the maximum stall duration for each
+ * output format/size combination.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>A stall duration is how much extra time would get added
+ * to the normal minimum frame duration for a repeating request
+ * that has streams with non-zero stall.</p>
+ * <p>For example, consider JPEG captures which have the following
+ * characteristics:</p>
+ * <ul>
+ * <li>JPEG streams act like processed YUV streams in requests for which
+ * they are not included; in requests in which they are directly
+ * referenced, they act as JPEG streams. This is because supporting a
+ * JPEG stream requires the underlying YUV data to always be ready for
+ * use by a JPEG encoder, but the encoder will only be used (and impact
+ * frame duration) on requests that actually reference a JPEG stream.</li>
+ * <li>The JPEG processor can run concurrently to the rest of the camera
+ * pipeline, but cannot process more than 1 capture at a time.</li>
+ * </ul>
+ * <p>In other words, using a repeating YUV request would result
+ * in a steady frame rate (let's say it's 30 FPS). If a single
+ * JPEG request is submitted periodically, the frame rate will stay
+ * at 30 FPS (as long as we wait for the previous JPEG to return each
+ * time). If we try to submit a repeating YUV + JPEG request, then
+ * the frame rate will drop from 30 FPS.</p>
+ * <p>In general, submitting a new request with a non-0 stall time
+ * stream will <em>not</em> cause a frame rate drop unless there are still
+ * outstanding buffers for that stream from previous requests.</p>
+ * <p>Submitting a repeating request with streams (call this <code>S</code>)
+ * is the same as setting the minimum frame duration from
+ * the normal minimum frame duration corresponding to <code>S</code>, added with
+ * the maximum stall duration for <code>S</code>.</p>
+ * <p>If interleaving requests with and without a stall duration,
+ * a request will stall by the maximum of the remaining times
+ * for each can-stall stream with outstanding buffers.</p>
+ * <p>This means that a stalling request will not have an exposure start
+ * until the stall has completed.</p>
+ * <p>This should correspond to the stall duration when only that stream is
+ * active, with all processing (typically in android.*.mode) set to FAST
+ * or OFF. Setting any of the processing modes to HIGH_QUALITY
+ * effectively results in an indeterminate stall duration for all
+ * streams in a request (the regular stall calculation rules are
+ * ignored).</p>
+ * <p>The following formats may always have a stall duration:</p>
+ * <ul>
+ * <li>{@link AIMAGE_FORMAT_JPEG}</li>
+ * <li>{@link AIMAGE_FORMAT_RAW16}</li>
+ * </ul>
+ * <p>The following formats will never have a stall duration:</p>
+ * <ul>
+ * <li>{@link AIMAGE_FORMAT_YUV_420_888}</li>
+ * <li>{@link AIMAGE_FORMAT_RAW10}</li>
+ * </ul>
+ * <p>All other formats may or may not have an allowed stall duration on
+ * a per-capability basis; refer to ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ * for more details.</p>
+ * <p>See ACAMERA_SENSOR_FRAME_DURATION for more information about
+ * calculating the max frame rate (absent stalls).</p>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ */
+ ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS = // int64[4*n]
+ ACAMERA_SCALER_START + 12,
+ /**
+ * <p>The crop type that this camera device supports.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>When passing a non-centered crop region (ACAMERA_SCALER_CROP_REGION) to a camera
+ * device that only supports CENTER_ONLY cropping, the camera device will move the
+ * crop region to the center of the sensor active array (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE)
+ * and keep the crop region width and height unchanged. The camera device will return the
+ * final used crop region in metadata result ACAMERA_SCALER_CROP_REGION.</p>
+ * <p>Camera devices that support FREEFORM cropping will support any crop region that
+ * is inside of the active array. The camera device will apply the same crop region and
+ * return the final used crop region in capture result metadata ACAMERA_SCALER_CROP_REGION.</p>
+ * <p>LEGACY capability devices will only support CENTER_ONLY cropping.</p>
+ *
+ * @see ACAMERA_SCALER_CROP_REGION
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_SCALER_CROPPING_TYPE = // byte (enum)
+ ACAMERA_SCALER_START + 13,
+ ACAMERA_SCALER_END,
+
+ /**
+ * <p>Duration each pixel is exposed to
+ * light.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>If the sensor can't expose this exact duration, it will shorten the
+ * duration exposed to the nearest possible value (rather than expose longer).
+ * The final exposure time used will be available in the output capture result.</p>
+ * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+ * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_MODE
+ */
+ ACAMERA_SENSOR_EXPOSURE_TIME = // int64
+ ACAMERA_SENSOR_START,
+ /**
+ * <p>Duration from start of frame exposure to
+ * start of next frame exposure.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>The maximum frame rate that can be supported by a camera subsystem is
+ * a function of many factors:</p>
+ * <ul>
+ * <li>Requested resolutions of output image streams</li>
+ * <li>Availability of binning / skipping modes on the imager</li>
+ * <li>The bandwidth of the imager interface</li>
+ * <li>The bandwidth of the various ISP processing blocks</li>
+ * </ul>
+ * <p>Since these factors can vary greatly between different ISPs and
+ * sensors, the camera abstraction tries to represent the bandwidth
+ * restrictions with as simple a model as possible.</p>
+ * <p>The model presented has the following characteristics:</p>
+ * <ul>
+ * <li>The image sensor is always configured to output the smallest
+ * resolution possible given the application's requested output stream
+ * sizes. The smallest resolution is defined as being at least as large
+ * as the largest requested output stream size; the camera pipeline must
+ * never digitally upsample sensor data when the crop region covers the
+ * whole sensor. In general, this means that if only small output stream
+ * resolutions are configured, the sensor can provide a higher frame
+ * rate.</li>
+ * <li>Since any request may use any or all the currently configured
+ * output streams, the sensor and ISP must be configured to support
+ * scaling a single capture to all the streams at the same time. This
+ * means the camera pipeline must be ready to produce the largest
+ * requested output size without any delay. Therefore, the overall
+ * frame rate of a given configured stream set is governed only by the
+ * largest requested stream resolution.</li>
+ * <li>Using more than one output stream in a request does not affect the
+ * frame duration.</li>
+ * <li>Certain format-streams may need to do additional background processing
+ * before data is consumed/produced by that stream. These processors
+ * can run concurrently to the rest of the camera pipeline, but
+ * cannot process more than 1 capture at a time.</li>
+ * </ul>
+ * <p>The necessary information for the application, given the model above,
+ * is provided via
+ * {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}.
+ * These are used to determine the maximum frame rate / minimum frame
+ * duration that is possible for a given stream configuration.</p>
+ * <p>Specifically, the application can use the following rules to
+ * determine the minimum frame duration it can request from the camera
+ * device:</p>
+ * <ol>
+ * <li>Let the set of currently configured input/output streams
+ * be called <code>S</code>.</li>
+ * <li>Find the minimum frame durations for each stream in <code>S</code>, by looking
+ * it up in {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}
+ * (with its respective size/format). Let this set of frame durations be
+ * called <code>F</code>.</li>
+ * <li>For any given request <code>R</code>, the minimum frame duration allowed
+ * for <code>R</code> is the maximum out of all values in <code>F</code>. Let the streams
+ * used in <code>R</code> be called <code>S_r</code>.</li>
+ * </ol>
+ * <p>If none of the streams in <code>S_r</code> have a stall time (listed in {@link
+ * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS}
+ * using its respective size/format), then the frame duration in <code>F</code>
+ * determines the steady state frame rate that the application will get
+ * if it uses <code>R</code> as a repeating request. Let this special kind of
+ * request be called <code>Rsimple</code>.</p>
+ * <p>A repeating request <code>Rsimple</code> can be <em>occasionally</em> interleaved
+ * by a single capture of a new request <code>Rstall</code> (which has at least
+ * one in-use stream with a non-0 stall time) and if <code>Rstall</code> has the
+ * same minimum frame duration this will not cause a frame rate loss
+ * if all buffers from the previous <code>Rstall</code> have already been
+ * delivered.</p>
+ * <p>For more details about stalling, see
+ * {@link ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS}.</p>
+ * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+ * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_MODE
+ */
+ ACAMERA_SENSOR_FRAME_DURATION = // int64
+ ACAMERA_SENSOR_START + 1,
+ /**
+ * <p>The amount of gain applied to sensor data
+ * before processing.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>The sensitivity is the standard ISO sensitivity value,
+ * as defined in ISO 12232:2006.</p>
+ * <p>The sensitivity must be within ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE, and
+ * if if it less than ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY, the camera device
+ * is guaranteed to use only analog amplification for applying the gain.</p>
+ * <p>If the camera device cannot apply the exact sensitivity
+ * requested, it will reduce the gain to the nearest supported
+ * value. The final sensitivity used will be available in the
+ * output capture result.</p>
+ * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+ * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_MODE
+ * @see ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE
+ * @see ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY
+ */
+ ACAMERA_SENSOR_SENSITIVITY = // int32
+ ACAMERA_SENSOR_START + 2,
+ /**
+ * <p>The standard reference illuminant used as the scene light source when
+ * calculating the ACAMERA_SENSOR_COLOR_TRANSFORM1,
+ * ACAMERA_SENSOR_CALIBRATION_TRANSFORM1, and
+ * ACAMERA_SENSOR_FORWARD_MATRIX1 matrices.</p>
+ *
+ * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM1
+ * @see ACAMERA_SENSOR_COLOR_TRANSFORM1
+ * @see ACAMERA_SENSOR_FORWARD_MATRIX1
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The values in this key correspond to the values defined for the
+ * EXIF LightSource tag. These illuminants are standard light sources
+ * that are often used calibrating camera devices.</p>
+ * <p>If this key is present, then ACAMERA_SENSOR_COLOR_TRANSFORM1,
+ * ACAMERA_SENSOR_CALIBRATION_TRANSFORM1, and
+ * ACAMERA_SENSOR_FORWARD_MATRIX1 will also be present.</p>
+ * <p>Some devices may choose to provide a second set of calibration
+ * information for improved quality, including
+ * ACAMERA_SENSOR_REFERENCE_ILLUMINANT2 and its corresponding matrices.</p>
+ *
+ * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM1
+ * @see ACAMERA_SENSOR_COLOR_TRANSFORM1
+ * @see ACAMERA_SENSOR_FORWARD_MATRIX1
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+ */
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1 = // byte (enum)
+ ACAMERA_SENSOR_START + 3,
+ /**
+ * <p>The standard reference illuminant used as the scene light source when
+ * calculating the ACAMERA_SENSOR_COLOR_TRANSFORM2,
+ * ACAMERA_SENSOR_CALIBRATION_TRANSFORM2, and
+ * ACAMERA_SENSOR_FORWARD_MATRIX2 matrices.</p>
+ *
+ * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM2
+ * @see ACAMERA_SENSOR_COLOR_TRANSFORM2
+ * @see ACAMERA_SENSOR_FORWARD_MATRIX2
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>See ACAMERA_SENSOR_REFERENCE_ILLUMINANT1 for more details.</p>
+ * <p>If this key is present, then ACAMERA_SENSOR_COLOR_TRANSFORM2,
+ * ACAMERA_SENSOR_CALIBRATION_TRANSFORM2, and
+ * ACAMERA_SENSOR_FORWARD_MATRIX2 will also be present.</p>
+ *
+ * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM2
+ * @see ACAMERA_SENSOR_COLOR_TRANSFORM2
+ * @see ACAMERA_SENSOR_FORWARD_MATRIX2
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+ */
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT2 = // byte
+ ACAMERA_SENSOR_START + 4,
+ /**
+ * <p>A per-device calibration transform matrix that maps from the
+ * reference sensor colorspace to the actual device sensor colorspace.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This matrix is used to correct for per-device variations in the
+ * sensor colorspace, and is used for processing raw buffer data.</p>
+ * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+ * contains a per-device calibration transform that maps colors
+ * from reference sensor color space (i.e. the "golden module"
+ * colorspace) into this camera device's native sensor color
+ * space under the first reference illuminant
+ * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1).</p>
+ *
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+ */
+ ACAMERA_SENSOR_CALIBRATION_TRANSFORM1 = // rational[3*3]
+ ACAMERA_SENSOR_START + 5,
+ /**
+ * <p>A per-device calibration transform matrix that maps from the
+ * reference sensor colorspace to the actual device sensor colorspace
+ * (this is the colorspace of the raw buffer data).</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This matrix is used to correct for per-device variations in the
+ * sensor colorspace, and is used for processing raw buffer data.</p>
+ * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+ * contains a per-device calibration transform that maps colors
+ * from reference sensor color space (i.e. the "golden module"
+ * colorspace) into this camera device's native sensor color
+ * space under the second reference illuminant
+ * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2).</p>
+ * <p>This matrix will only be present if the second reference
+ * illuminant is present.</p>
+ *
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+ */
+ ACAMERA_SENSOR_CALIBRATION_TRANSFORM2 = // rational[3*3]
+ ACAMERA_SENSOR_START + 6,
+ /**
+ * <p>A matrix that transforms color values from CIE XYZ color space to
+ * reference sensor color space.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This matrix is used to convert from the standard CIE XYZ color
+ * space to the reference sensor colorspace, and is used when processing
+ * raw buffer data.</p>
+ * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+ * contains a color transform matrix that maps colors from the CIE
+ * XYZ color space to the reference sensor color space (i.e. the
+ * "golden module" colorspace) under the first reference illuminant
+ * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1).</p>
+ * <p>The white points chosen in both the reference sensor color space
+ * and the CIE XYZ colorspace when calculating this transform will
+ * match the standard white point for the first reference illuminant
+ * (i.e. no chromatic adaptation will be applied by this transform).</p>
+ *
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+ */
+ ACAMERA_SENSOR_COLOR_TRANSFORM1 = // rational[3*3]
+ ACAMERA_SENSOR_START + 7,
+ /**
+ * <p>A matrix that transforms color values from CIE XYZ color space to
+ * reference sensor color space.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This matrix is used to convert from the standard CIE XYZ color
+ * space to the reference sensor colorspace, and is used when processing
+ * raw buffer data.</p>
+ * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+ * contains a color transform matrix that maps colors from the CIE
+ * XYZ color space to the reference sensor color space (i.e. the
+ * "golden module" colorspace) under the second reference illuminant
+ * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2).</p>
+ * <p>The white points chosen in both the reference sensor color space
+ * and the CIE XYZ colorspace when calculating this transform will
+ * match the standard white point for the second reference illuminant
+ * (i.e. no chromatic adaptation will be applied by this transform).</p>
+ * <p>This matrix will only be present if the second reference
+ * illuminant is present.</p>
+ *
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+ */
+ ACAMERA_SENSOR_COLOR_TRANSFORM2 = // rational[3*3]
+ ACAMERA_SENSOR_START + 8,
+ /**
+ * <p>A matrix that transforms white balanced camera colors from the reference
+ * sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
+ * is used when processing raw buffer data.</p>
+ * <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
+ * a color transform matrix that maps white balanced colors from the
+ * reference sensor color space to the CIE XYZ color space with a D50 white
+ * point.</p>
+ * <p>Under the first reference illuminant (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1)
+ * this matrix is chosen so that the standard white point for this reference
+ * illuminant in the reference sensor colorspace is mapped to D50 in the
+ * CIE XYZ colorspace.</p>
+ *
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+ */
+ ACAMERA_SENSOR_FORWARD_MATRIX1 = // rational[3*3]
+ ACAMERA_SENSOR_START + 9,
+ /**
+ * <p>A matrix that transforms white balanced camera colors from the reference
+ * sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
+ * is used when processing raw buffer data.</p>
+ * <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
+ * a color transform matrix that maps white balanced colors from the
+ * reference sensor color space to the CIE XYZ color space with a D50 white
+ * point.</p>
+ * <p>Under the second reference illuminant (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2)
+ * this matrix is chosen so that the standard white point for this reference
+ * illuminant in the reference sensor colorspace is mapped to D50 in the
+ * CIE XYZ colorspace.</p>
+ * <p>This matrix will only be present if the second reference
+ * illuminant is present.</p>
+ *
+ * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+ */
+ ACAMERA_SENSOR_FORWARD_MATRIX2 = // rational[3*3]
+ ACAMERA_SENSOR_START + 10,
+ /**
+ * <p>A fixed black level offset for each of the color filter arrangement
+ * (CFA) mosaic channels.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This key specifies the zero light value for each of the CFA mosaic
+ * channels in the camera sensor. The maximal value output by the
+ * sensor is represented by the value in ACAMERA_SENSOR_INFO_WHITE_LEVEL.</p>
+ * <p>The values are given in the same order as channels listed for the CFA
+ * layout key (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT), i.e. the
+ * nth value given corresponds to the black level offset for the nth
+ * color channel listed in the CFA.</p>
+ * <p>The black level values of captured images may vary for different
+ * capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY). This key
+ * represents a coarse approximation for such case. It is recommended to
+ * use ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL or use pixels from
+ * ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS directly for captures when
+ * supported by the camera device, which provides more accurate black
+ * level values. For raw capture in particular, it is recommended to use
+ * pixels from ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS to calculate black
+ * level values for each frame.</p>
+ *
+ * @see ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL
+ * @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+ * @see ACAMERA_SENSOR_INFO_WHITE_LEVEL
+ * @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_SENSOR_BLACK_LEVEL_PATTERN = // int32[4]
+ ACAMERA_SENSOR_START + 12,
+ /**
+ * <p>Maximum sensitivity that is implemented
+ * purely through analog gain.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>For ACAMERA_SENSOR_SENSITIVITY values less than or
+ * equal to this, all applied gain must be analog. For
+ * values above this, the gain applied can be a mix of analog and
+ * digital.</p>
+ *
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY = // int32
+ ACAMERA_SENSOR_START + 13,
+ /**
+ * <p>Clockwise angle through which the output image needs to be rotated to be
+ * upright on the device screen in its native orientation.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Also defines the direction of rolling shutter readout, which is from top to bottom in
+ * the sensor's coordinate system.</p>
+ */
+ ACAMERA_SENSOR_ORIENTATION = // int32
+ ACAMERA_SENSOR_START + 14,
+ /**
+ * <p>Time at start of exposure of first
+ * row of the image sensor active array, in nanoseconds.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The timestamps are also included in all image
+ * buffers produced for the same capture, and will be identical
+ * on all the outputs.</p>
+ * <p>When ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> UNKNOWN,
+ * the timestamps measure time since an unspecified starting point,
+ * and are monotonically increasing. They can be compared with the
+ * timestamps for other captures from the same camera device, but are
+ * not guaranteed to be comparable to any other time source.</p>
+ * <p>When ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> REALTIME, the
+ * timestamps measure time in the same timebase as
+ * <a href="https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos">elapsedRealtimeNanos</a>
+ * (or CLOCK_BOOTTIME), and they can
+ * be compared to other timestamps from other subsystems that
+ * are using that base.</p>
+ * <p>For reprocessing, the timestamp will match the start of exposure of
+ * the input image, i.e. {@link CaptureResult#SENSOR_TIMESTAMP the
+ * timestamp} in the TotalCaptureResult that was used to create the
+ * reprocess capture request.</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
+ */
+ ACAMERA_SENSOR_TIMESTAMP = // int64
+ ACAMERA_SENSOR_START + 16,
+ /**
+ * <p>The estimated camera neutral color in the native sensor colorspace at
+ * the time of capture.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>This value gives the neutral color point encoded as an RGB value in the
+ * native sensor color space. The neutral color point indicates the
+ * currently estimated white point of the scene illumination. It can be
+ * used to interpolate between the provided color transforms when
+ * processing raw sensor data.</p>
+ * <p>The order of the values is R, G, B; where R is in the lowest index.</p>
+ */
+ ACAMERA_SENSOR_NEUTRAL_COLOR_POINT = // rational[3]
+ ACAMERA_SENSOR_START + 18,
+ /**
+ * <p>Noise model coefficients for each CFA mosaic channel.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>This key contains two noise model coefficients for each CFA channel
+ * corresponding to the sensor amplification (S) and sensor readout
+ * noise (O). These are given as pairs of coefficients for each channel
+ * in the same order as channels listed for the CFA layout key
+ * (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT). This is
+ * represented as an array of Pair<Double, Double>, where
+ * the first member of the Pair at index n is the S coefficient and the
+ * second member is the O coefficient for the nth color channel in the CFA.</p>
+ * <p>These coefficients are used in a two parameter noise model to describe
+ * the amount of noise present in the image for each CFA channel. The
+ * noise model used here is:</p>
+ * <p>N(x) = sqrt(Sx + O)</p>
+ * <p>Where x represents the recorded signal of a CFA channel normalized to
+ * the range [0, 1], and S and O are the noise model coeffiecients for
+ * that channel.</p>
+ * <p>A more detailed description of the noise model can be found in the
+ * Adobe DNG specification for the NoiseProfile tag.</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+ */
+ ACAMERA_SENSOR_NOISE_PROFILE = // double[2*CFA Channels]
+ ACAMERA_SENSOR_START + 19,
+ /**
+ * <p>The worst-case divergence between Bayer green channels.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>This value is an estimate of the worst case split between the
+ * Bayer green channels in the red and blue rows in the sensor color
+ * filter array.</p>
+ * <p>The green split is calculated as follows:</p>
+ * <ol>
+ * <li>A 5x5 pixel (or larger) window W within the active sensor array is
+ * chosen. The term 'pixel' here is taken to mean a group of 4 Bayer
+ * mosaic channels (R, Gr, Gb, B). The location and size of the window
+ * chosen is implementation defined, and should be chosen to provide a
+ * green split estimate that is both representative of the entire image
+ * for this camera sensor, and can be calculated quickly.</li>
+ * <li>The arithmetic mean of the green channels from the red
+ * rows (mean_Gr) within W is computed.</li>
+ * <li>The arithmetic mean of the green channels from the blue
+ * rows (mean_Gb) within W is computed.</li>
+ * <li>The maximum ratio R of the two means is computed as follows:
+ * <code>R = max((mean_Gr + 1)/(mean_Gb + 1), (mean_Gb + 1)/(mean_Gr + 1))</code></li>
+ * </ol>
+ * <p>The ratio R is the green split divergence reported for this property,
+ * which represents how much the green channels differ in the mosaic
+ * pattern. This value is typically used to determine the treatment of
+ * the green mosaic channels when demosaicing.</p>
+ * <p>The green split value can be roughly interpreted as follows:</p>
+ * <ul>
+ * <li>R < 1.03 is a negligible split (<3% divergence).</li>
+ * <li>1.20 <= R >= 1.03 will require some software
+ * correction to avoid demosaic errors (3-20% divergence).</li>
+ * <li>R > 1.20 will require strong software correction to produce
+ * a usuable image (>20% divergence).</li>
+ * </ul>
+ */
+ ACAMERA_SENSOR_GREEN_SPLIT = // float
+ ACAMERA_SENSOR_START + 22,
+ /**
+ * <p>A pixel <code>[R, G_even, G_odd, B]</code> that supplies the test pattern
+ * when ACAMERA_SENSOR_TEST_PATTERN_MODE is SOLID_COLOR.</p>
+ *
+ * @see ACAMERA_SENSOR_TEST_PATTERN_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Each color channel is treated as an unsigned 32-bit integer.
+ * The camera device then uses the most significant X bits
+ * that correspond to how many bits are in its Bayer raw sensor
+ * output.</p>
+ * <p>For example, a sensor with RAW10 Bayer output would use the
+ * 10 most significant bits from each color channel.</p>
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_DATA = // int32[4]
+ ACAMERA_SENSOR_START + 23,
+ /**
+ * <p>When enabled, the sensor sends a test pattern instead of
+ * doing a real exposure from the camera.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When a test pattern is enabled, all manual sensor controls specified
+ * by ACAMERA_SENSOR_* will be ignored. All other controls should
+ * work as normal.</p>
+ * <p>For example, if manual flash is enabled, flash firing should still
+ * occur (and that the test pattern remain unmodified, since the flash
+ * would not actually affect it).</p>
+ * <p>Defaults to OFF.</p>
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_MODE = // int32 (enum)
+ ACAMERA_SENSOR_START + 24,
+ /**
+ * <p>List of sensor test pattern modes for ACAMERA_SENSOR_TEST_PATTERN_MODE
+ * supported by this camera device.</p>
+ *
+ * @see ACAMERA_SENSOR_TEST_PATTERN_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Defaults to OFF, and always includes OFF if defined.</p>
+ */
+ ACAMERA_SENSOR_AVAILABLE_TEST_PATTERN_MODES = // int32[n]
+ ACAMERA_SENSOR_START + 25,
+ /**
+ * <p>Duration between the start of first row exposure
+ * and the start of last row exposure.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>This is the exposure time skew between the first and last
+ * row exposure start times. The first row and the last row are
+ * the first and last rows inside of the
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+ * <p>For typical camera sensors that use rolling shutters, this is also equivalent
+ * to the frame readout time.</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_SENSOR_ROLLING_SHUTTER_SKEW = // int64
+ ACAMERA_SENSOR_START + 26,
+ /**
+ * <p>List of disjoint rectangles indicating the sensor
+ * optically shielded black pixel regions.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>In most camera sensors, the active array is surrounded by some
+ * optically shielded pixel areas. By blocking light, these pixels
+ * provides a reliable black reference for black level compensation
+ * in active array region.</p>
+ * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+ * <p>This key provides a list of disjoint rectangles specifying the
+ * regions of optically shielded (with metal shield) black pixel
+ * regions if the camera device is capable of reading out these black
+ * pixels in the output raw images. In comparison to the fixed black
+ * level values reported by ACAMERA_SENSOR_BLACK_LEVEL_PATTERN, this key
+ * may provide a more accurate way for the application to calculate
+ * black level of each captured raw images.</p>
+ * <p>When this key is reported, the ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL and
+ * ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL will also be reported.</p>
+ *
+ * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+ * @see ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL
+ * @see ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL
+ */
+ ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS = // int32[4*num_regions]
+ ACAMERA_SENSOR_START + 27,
+ /**
+ * <p>A per-frame dynamic black level offset for each of the color filter
+ * arrangement (CFA) mosaic channels.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Camera sensor black levels may vary dramatically for different
+ * capture settings (e.g. ACAMERA_SENSOR_SENSITIVITY). The fixed black
+ * level reported by ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may be too
+ * inaccurate to represent the actual value on a per-frame basis. The
+ * camera device internal pipeline relies on reliable black level values
+ * to process the raw images appropriately. To get the best image
+ * quality, the camera device may choose to estimate the per frame black
+ * level values either based on optically shielded black regions
+ * (ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS) or its internal model.</p>
+ * <p>This key reports the camera device estimated per-frame zero light
+ * value for each of the CFA mosaic channels in the camera sensor. The
+ * ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may only represent a coarse
+ * approximation of the actual black level values. This value is the
+ * black level used in camera device internal image processing pipeline
+ * and generally more accurate than the fixed black level values.
+ * However, since they are estimated values by the camera device, they
+ * may not be as accurate as the black level values calculated from the
+ * optical black pixels reported by ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS.</p>
+ * <p>The values are given in the same order as channels listed for the CFA
+ * layout key (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT), i.e. the
+ * nth value given corresponds to the black level offset for the nth
+ * color channel listed in the CFA.</p>
+ * <p>This key will be available if ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS is
+ * available or the camera device advertises this key via
+ * {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}.</p>
+ *
+ * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+ * @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+ * @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL = // float[4]
+ ACAMERA_SENSOR_START + 28,
+ /**
+ * <p>Maximum raw value output by sensor for this frame.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Since the ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may change for different
+ * capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY), the white
+ * level will change accordingly. This key is similar to
+ * ACAMERA_SENSOR_INFO_WHITE_LEVEL, but specifies the camera device
+ * estimated white level for each frame.</p>
+ * <p>This key will be available if ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS is
+ * available or the camera device advertises this key via
+ * {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}.</p>
+ *
+ * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+ * @see ACAMERA_SENSOR_INFO_WHITE_LEVEL
+ * @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL = // int32
+ ACAMERA_SENSOR_START + 29,
+ ACAMERA_SENSOR_END,
+
+ /**
+ * <p>The area of the image sensor which corresponds to active pixels after any geometric
+ * distortion correction has been applied.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This is the rectangle representing the size of the active region of the sensor (i.e.
+ * the region that actually receives light from the scene) after any geometric correction
+ * has been applied, and should be treated as the maximum size in pixels of any of the
+ * image output formats aside from the raw formats.</p>
+ * <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
+ * the full pixel array, and the size of the full pixel array is given by
+ * ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
+ * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+ * <p>The coordinate system for most other keys that list pixel coordinates, including
+ * ACAMERA_SCALER_CROP_REGION, is defined relative to the active array rectangle given in
+ * this field, with <code>(0, 0)</code> being the top-left of this rectangle.</p>
+ * <p>The active array may be smaller than the full pixel array, since the full array may
+ * include black calibration pixels or other inactive regions, and geometric correction
+ * resulting in scaling or cropping may have been applied.</p>
+ *
+ * @see ACAMERA_SCALER_CROP_REGION
+ * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+ */
+ ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE = // int32[4]
+ ACAMERA_SENSOR_INFO_START,
+ /**
+ * <p>Range of sensitivities for ACAMERA_SENSOR_SENSITIVITY supported by this
+ * camera device.</p>
+ *
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The values are the standard ISO sensitivity values,
+ * as defined in ISO 12232:2006.</p>
+ */
+ ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE = // int32[2]
+ ACAMERA_SENSOR_INFO_START + 1,
+ /**
+ * <p>The arrangement of color filters on sensor;
+ * represents the colors in the top-left 2x2 section of
+ * the sensor, in reading order.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT = // byte (enum)
+ ACAMERA_SENSOR_INFO_START + 2,
+ /**
+ * <p>The range of image exposure times for ACAMERA_SENSOR_EXPOSURE_TIME supported
+ * by this camera device.</p>
+ *
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE = // int64[2]
+ ACAMERA_SENSOR_INFO_START + 3,
+ /**
+ * <p>The maximum possible frame duration (minimum frame rate) for
+ * ACAMERA_SENSOR_FRAME_DURATION that is supported this camera device.</p>
+ *
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Attempting to use frame durations beyond the maximum will result in the frame
+ * duration being clipped to the maximum. See that control for a full definition of frame
+ * durations.</p>
+ * <p>Refer to {@link
+ * ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}
+ * for the minimum frame duration values.</p>
+ */
+ ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION = // int64
+ ACAMERA_SENSOR_INFO_START + 4,
+ /**
+ * <p>The physical dimensions of the full pixel
+ * array.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This is the physical size of the sensor pixel
+ * array defined by ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+ */
+ ACAMERA_SENSOR_INFO_PHYSICAL_SIZE = // float[2]
+ ACAMERA_SENSOR_INFO_START + 5,
+ /**
+ * <p>Dimensions of the full pixel array, possibly
+ * including black calibration pixels.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The pixel count of the full pixel array of the image sensor, which covers
+ * ACAMERA_SENSOR_INFO_PHYSICAL_SIZE area. This represents the full pixel dimensions of
+ * the raw buffers produced by this sensor.</p>
+ * <p>If a camera device supports raw sensor formats, either this or
+ * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE is the maximum dimensions for the raw
+ * output formats listed in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS (this depends on
+ * whether or not the image sensor returns buffers containing pixels that are not
+ * part of the active array region for blacklevel calibration or other purposes).</p>
+ * <p>Some parts of the full pixel array may not receive light from the scene,
+ * or be otherwise inactive. The ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE key
+ * defines the rectangle of active pixels that will be included in processed image
+ * formats.</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_PHYSICAL_SIZE
+ * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE = // int32[2]
+ ACAMERA_SENSOR_INFO_START + 6,
+ /**
+ * <p>Maximum raw value output by sensor.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This specifies the fully-saturated encoding level for the raw
+ * sample values from the sensor. This is typically caused by the
+ * sensor becoming highly non-linear or clipping. The minimum for
+ * each channel is specified by the offset in the
+ * ACAMERA_SENSOR_BLACK_LEVEL_PATTERN key.</p>
+ * <p>The white level is typically determined either by sensor bit depth
+ * (8-14 bits is expected), or by the point where the sensor response
+ * becomes too non-linear to be useful. The default value for this is
+ * maximum representable value for a 16-bit raw sample (2^16 - 1).</p>
+ * <p>The white level values of captured images may vary for different
+ * capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY). This key
+ * represents a coarse approximation for such case. It is recommended
+ * to use ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL for captures when supported
+ * by the camera device, which provides more accurate white level values.</p>
+ *
+ * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+ * @see ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_SENSOR_INFO_WHITE_LEVEL = // int32
+ ACAMERA_SENSOR_INFO_START + 7,
+ /**
+ * <p>The time base source for sensor capture start timestamps.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The timestamps provided for captures are always in nanoseconds and monotonic, but
+ * may not based on a time source that can be compared to other system time sources.</p>
+ * <p>This characteristic defines the source for the timestamps, and therefore whether they
+ * can be compared against other system time sources/timestamps.</p>
+ */
+ ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE = // byte (enum)
+ ACAMERA_SENSOR_INFO_START + 8,
+ /**
+ * <p>Whether the RAW images output from this camera device are subject to
+ * lens shading correction.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If TRUE, all images produced by the camera device in the RAW image formats will
+ * have lens shading correction already applied to it. If FALSE, the images will
+ * not be adjusted for lens shading correction.
+ * See android.request.maxNumOutputRaw for a list of RAW image formats.</p>
+ * <p>This key will be <code>null</code> for all devices do not report this information.
+ * Devices with RAW capability will always report this information in this key.</p>
+ */
+ ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED = // byte (enum)
+ ACAMERA_SENSOR_INFO_START + 9,
+ /**
+ * <p>The area of the image sensor which corresponds to active pixels prior to the
+ * application of any geometric distortion correction.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+ * <p>This is the rectangle representing the size of the active region of the sensor (i.e.
+ * the region that actually receives light from the scene) before any geometric correction
+ * has been applied, and should be treated as the active region rectangle for any of the
+ * raw formats. All metadata associated with raw processing (e.g. the lens shading
+ * correction map, and radial distortion fields) treats the top, left of this rectangle as
+ * the origin, (0,0).</p>
+ * <p>The size of this region determines the maximum field of view and the maximum number of
+ * pixels that an image from this sensor can contain, prior to the application of
+ * geometric distortion correction. The effective maximum pixel dimensions of a
+ * post-distortion-corrected image is given by the ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ * field, and the effective maximum field of view for a post-distortion-corrected image
+ * can be calculated by applying the geometric distortion correction fields to this
+ * rectangle, and cropping to the rectangle given in ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+ * <p>E.g. to calculate position of a pixel, (x,y), in a processed YUV output image with the
+ * dimensions in ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE given the position of a pixel,
+ * (x', y'), in the raw pixel array with dimensions give in
+ * ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE:</p>
+ * <ol>
+ * <li>Choose a pixel (x', y') within the active array region of the raw buffer given in
+ * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE, otherwise this pixel is considered
+ * to be outside of the FOV, and will not be shown in the processed output image.</li>
+ * <li>Apply geometric distortion correction to get the post-distortion pixel coordinate,
+ * (x_i, y_i). When applying geometric correction metadata, note that metadata for raw
+ * buffers is defined relative to the top, left of the
+ * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE rectangle.</li>
+ * <li>If the resulting corrected pixel coordinate is within the region given in
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, then the position of this pixel in the
+ * processed output image buffer is <code>(x_i - activeArray.left, y_i - activeArray.top)</code>,
+ * when the top, left coordinate of that buffer is treated as (0, 0).</li>
+ * </ol>
+ * <p>Thus, for pixel x',y' = (25, 25) on a sensor where ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+ * is (100,100), ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE is (10, 10, 100, 100),
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE is (20, 20, 80, 80), and the geometric distortion
+ * correction doesn't change the pixel coordinate, the resulting pixel selected in
+ * pixel coordinates would be x,y = (25, 25) relative to the top,left of the raw buffer
+ * with dimensions given in ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE, and would be (5, 5)
+ * relative to the top,left of post-processed YUV output buffer with dimensions given in
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+ * <p>The currently supported fields that correct for geometric distortion are:</p>
+ * <ol>
+ * <li>ACAMERA_LENS_RADIAL_DISTORTION.</li>
+ * </ol>
+ * <p>If all of the geometric distortion fields are no-ops, this rectangle will be the same
+ * as the post-distortion-corrected rectangle given in
+ * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+ * <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
+ * the full pixel array, and the size of the full pixel array is given by
+ * ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
+ * <p>The pre-correction active array may be smaller than the full pixel array, since the
+ * full array may include black calibration pixels or other inactive regions.</p>
+ *
+ * @see ACAMERA_LENS_RADIAL_DISTORTION
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+ * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE = // int32[4]
+ ACAMERA_SENSOR_INFO_START + 10,
+ ACAMERA_SENSOR_INFO_END,
+
+ /**
+ * <p>Quality of lens shading correction applied
+ * to the image data.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When set to OFF mode, no lens shading correction will be applied by the
+ * camera device, and an identity lens shading map data will be provided
+ * if <code>ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE == ON</code>. For example, for lens
+ * shading map with size of <code>[ 4, 3 ]</code>,
+ * the output android.statistics.lensShadingCorrectionMap for this case will be an identity
+ * map shown below:</p>
+ * <pre><code>[ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ]
+ * </code></pre>
+ * <p>When set to other modes, lens shading correction will be applied by the camera
+ * device. Applications can request lens shading map data by setting
+ * ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE to ON, and then the camera device will provide lens
+ * shading map data in android.statistics.lensShadingCorrectionMap; the returned shading map
+ * data will be the one applied by the camera device for this capture request.</p>
+ * <p>The shading map data may depend on the auto-exposure (AE) and AWB statistics, therefore
+ * the reliability of the map data may be affected by the AE and AWB algorithms. When AE and
+ * AWB are in AUTO modes(ACAMERA_CONTROL_AE_MODE <code>!=</code> OFF and ACAMERA_CONTROL_AWB_MODE <code>!=</code>
+ * OFF), to get best results, it is recommended that the applications wait for the AE and AWB
+ * to be converged before using the returned shading map data.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AWB_MODE
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+ */
+ ACAMERA_SHADING_MODE = // byte (enum)
+ ACAMERA_SHADING_START,
+ /**
+ * <p>List of lens shading modes for ACAMERA_SHADING_MODE that are supported by this camera device.</p>
+ *
+ * @see ACAMERA_SHADING_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This list contains lens shading modes that can be set for the camera device.
+ * Camera devices that support the MANUAL_POST_PROCESSING capability will always
+ * list OFF and FAST mode. This includes all FULL level devices.
+ * LEGACY devices will always only support FAST mode.</p>
+ */
+ ACAMERA_SHADING_AVAILABLE_MODES = // byte[n]
+ ACAMERA_SHADING_START + 2,
+ ACAMERA_SHADING_END,
+
+ /**
+ * <p>Operating mode for the face detector
+ * unit.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Whether face detection is enabled, and whether it
+ * should output just the basic fields or the full set of
+ * fields.</p>
+ */
+ ACAMERA_STATISTICS_FACE_DETECT_MODE = // byte (enum)
+ ACAMERA_STATISTICS_START,
+ /**
+ * <p>Operating mode for hot pixel map generation.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>If set to <code>true</code>, a hot pixel map is returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.
+ * If set to <code>false</code>, no hot pixel map will be returned.</p>
+ *
+ * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+ */
+ ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE = // byte (enum)
+ ACAMERA_STATISTICS_START + 3,
+ /**
+ * <p>List of unique IDs for detected faces.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Each detected face is given a unique ID that is valid for as long as the face is visible
+ * to the camera device. A face that leaves the field of view and later returns may be
+ * assigned a new ID.</p>
+ * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE == FULL</p>
+ *
+ * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+ */
+ ACAMERA_STATISTICS_FACE_IDS = // int32[n]
+ ACAMERA_STATISTICS_START + 4,
+ /**
+ * <p>List of landmarks for detected
+ * faces.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The coordinate system is that of ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with
+ * <code>(0, 0)</code> being the top-left pixel of the active array.</p>
+ * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE == FULL</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+ */
+ ACAMERA_STATISTICS_FACE_LANDMARKS = // int32[n*6]
+ ACAMERA_STATISTICS_START + 5,
+ /**
+ * <p>List of the bounding rectangles for detected
+ * faces.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+ * <p>The coordinate system is that of ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with
+ * <code>(0, 0)</code> being the top-left pixel of the active array.</p>
+ * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE != OFF</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+ */
+ ACAMERA_STATISTICS_FACE_RECTANGLES = // int32[n*4]
+ ACAMERA_STATISTICS_START + 6,
+ /**
+ * <p>List of the face confidence scores for
+ * detected faces</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE != OFF.</p>
+ *
+ * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+ */
+ ACAMERA_STATISTICS_FACE_SCORES = // byte[n]
+ ACAMERA_STATISTICS_START + 7,
+ /**
+ * <p>The shading map is a low-resolution floating-point map
+ * that lists the coefficients used to correct for vignetting and color shading,
+ * for each Bayer color channel of RAW image data.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The map provided here is the same map that is used by the camera device to
+ * correct both color shading and vignetting for output non-RAW images.</p>
+ * <p>When there is no lens shading correction applied to RAW
+ * output images (ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED <code>==</code>
+ * false), this map is the complete lens shading correction
+ * map; when there is some lens shading correction applied to
+ * the RAW output image (ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED<code>==</code> true), this map reports the remaining lens shading
+ * correction map that needs to be applied to get shading
+ * corrected images that match the camera device's output for
+ * non-RAW formats.</p>
+ * <p>For a complete shading correction map, the least shaded
+ * section of the image will have a gain factor of 1; all
+ * other sections will have gains above 1.</p>
+ * <p>When ACAMERA_COLOR_CORRECTION_MODE = TRANSFORM_MATRIX, the map
+ * will take into account the colorCorrection settings.</p>
+ * <p>The shading map is for the entire active pixel array, and is not
+ * affected by the crop region specified in the request. Each shading map
+ * entry is the value of the shading compensation map over a specific
+ * pixel on the sensor. Specifically, with a (N x M) resolution shading
+ * map, and an active pixel array size (W x H), shading map entry
+ * (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at
+ * pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels.
+ * The map is assumed to be bilinearly interpolated between the sample points.</p>
+ * <p>The channel order is [R, Geven, Godd, B], where Geven is the green
+ * channel for the even rows of a Bayer pattern, and Godd is the odd rows.
+ * The shading map is stored in a fully interleaved format, and its size
+ * is provided in the camera static metadata by ACAMERA_LENS_INFO_SHADING_MAP_SIZE.</p>
+ * <p>The shading map will generally have on the order of 30-40 rows and columns,
+ * and will be smaller than 64x64.</p>
+ * <p>As an example, given a very small map defined as:</p>
+ * <pre><code>ACAMERA_LENS_INFO_SHADING_MAP_SIZE = [ 4, 3 ]
+ * ACAMERA_STATISTICS_LENS_SHADING_MAP =
+ * [ 1.3, 1.2, 1.15, 1.2, 1.2, 1.2, 1.15, 1.2,
+ * 1.1, 1.2, 1.2, 1.2, 1.3, 1.2, 1.3, 1.3,
+ * 1.2, 1.2, 1.25, 1.1, 1.1, 1.1, 1.1, 1.0,
+ * 1.0, 1.0, 1.0, 1.0, 1.2, 1.3, 1.25, 1.2,
+ * 1.3, 1.2, 1.2, 1.3, 1.2, 1.15, 1.1, 1.2,
+ * 1.2, 1.1, 1.0, 1.2, 1.3, 1.15, 1.2, 1.3 ]
+ * </code></pre>
+ * <p>The low-resolution scaling map images for each channel are
+ * (displayed using nearest-neighbor interpolation):</p>
+ * <p><img alt="Red lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/red_shading.png" />
+ * <img alt="Green (even rows) lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/green_e_shading.png" />
+ * <img alt="Green (odd rows) lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/green_o_shading.png" />
+ * <img alt="Blue lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/blue_shading.png" /></p>
+ * <p>As a visualization only, inverting the full-color map to recover an
+ * image of a gray wall (using bicubic interpolation for visual quality)
+ * as captured by the sensor gives:</p>
+ * <p><img alt="Image of a uniform white wall (inverse shading map)" src="../images/camera2/metadata/android.statistics.lensShadingMap/inv_shading.png" /></p>
+ * <p>Note that the RAW image data might be subject to lens shading
+ * correction not reported on this map. Query
+ * ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED to see if RAW image data has subject
+ * to lens shading correction. If ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
+ * is TRUE, the RAW image data is subject to partial or full lens shading
+ * correction. In the case full lens shading correction is applied to RAW
+ * images, the gain factor map reported in this key will contain all 1.0 gains.
+ * In other words, the map reported in this key is the remaining lens shading
+ * that needs to be applied on the RAW image to get images without lens shading
+ * artifacts. See android.request.maxNumOutputRaw for a list of RAW image
+ * formats.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_MODE
+ * @see ACAMERA_LENS_INFO_SHADING_MAP_SIZE
+ * @see ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+ */
+ ACAMERA_STATISTICS_LENS_SHADING_MAP = // float[4*n*m]
+ ACAMERA_STATISTICS_START + 11,
+ /**
+ * <p>The camera device estimated scene illumination lighting
+ * frequency.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>Many light sources, such as most fluorescent lights, flicker at a rate
+ * that depends on the local utility power standards. This flicker must be
+ * accounted for by auto-exposure routines to avoid artifacts in captured images.
+ * The camera device uses this entry to tell the application what the scene
+ * illuminant frequency is.</p>
+ * <p>When manual exposure control is enabled
+ * (<code>ACAMERA_CONTROL_AE_MODE == OFF</code> or <code>ACAMERA_CONTROL_MODE ==
+ * OFF</code>), the ACAMERA_CONTROL_AE_ANTIBANDING_MODE doesn't perform
+ * antibanding, and the application can ensure it selects
+ * exposure times that do not cause banding issues by looking
+ * into this metadata field. See
+ * ACAMERA_CONTROL_AE_ANTIBANDING_MODE for more details.</p>
+ * <p>Reports NONE if there doesn't appear to be flickering illumination.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_MODE
+ */
+ ACAMERA_STATISTICS_SCENE_FLICKER = // byte (enum)
+ ACAMERA_STATISTICS_START + 14,
+ /**
+ * <p>List of <code>(x, y)</code> coordinates of hot/defective pixels on the sensor.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>A coordinate <code>(x, y)</code> must lie between <code>(0, 0)</code>, and
+ * <code>(width - 1, height - 1)</code> (inclusive), which are the top-left and
+ * bottom-right of the pixel array, respectively. The width and
+ * height dimensions are given in ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.
+ * This may include hot pixels that lie outside of the active array
+ * bounds given by ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+ *
+ * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+ * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+ */
+ ACAMERA_STATISTICS_HOT_PIXEL_MAP = // int32[2*n]
+ ACAMERA_STATISTICS_START + 15,
+ /**
+ * <p>Whether the camera device will output the lens
+ * shading map in output result metadata.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When set to ON,
+ * ACAMERA_STATISTICS_LENS_SHADING_MAP will be provided in
+ * the output result metadata.</p>
+ * <p>ON is always supported on devices with the RAW capability.</p>
+ *
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+ */
+ ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE = // byte (enum)
+ ACAMERA_STATISTICS_START + 16,
+ ACAMERA_STATISTICS_END,
+
+ /**
+ * <p>List of face detection modes for ACAMERA_STATISTICS_FACE_DETECT_MODE that are
+ * supported by this camera device.</p>
+ *
+ * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>OFF is always supported.</p>
+ */
+ ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES = // byte[n]
+ ACAMERA_STATISTICS_INFO_START,
+ /**
+ * <p>The maximum number of simultaneously detectable
+ * faces.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>None</p>
+ */
+ ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT = // int32
+ ACAMERA_STATISTICS_INFO_START + 2,
+ /**
+ * <p>List of hot pixel map output modes for ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE that are
+ * supported by this camera device.</p>
+ *
+ * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If no hotpixel map output is available for this camera device, this will contain only
+ * <code>false</code>.</p>
+ * <p>ON is always supported on devices with the RAW capability.</p>
+ */
+ ACAMERA_STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES = // byte[n]
+ ACAMERA_STATISTICS_INFO_START + 6,
+ /**
+ * <p>List of lens shading map output modes for ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE that
+ * are supported by this camera device.</p>
+ *
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If no lens shading map output is available for this camera device, this key will
+ * contain only OFF.</p>
+ * <p>ON is always supported on devices with the RAW capability.
+ * LEGACY mode devices will always only support OFF.</p>
+ */
+ ACAMERA_STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES = // byte[n]
+ ACAMERA_STATISTICS_INFO_START + 7,
+ ACAMERA_STATISTICS_INFO_END,
+
+ /**
+ * <p>Tonemapping / contrast / gamma curve for the blue
+ * channel, to use when ACAMERA_TONEMAP_MODE is
+ * CONTRAST_CURVE.</p>
+ *
+ * @see ACAMERA_TONEMAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>See ACAMERA_TONEMAP_CURVE_RED for more details.</p>
+ *
+ * @see ACAMERA_TONEMAP_CURVE_RED
+ */
+ ACAMERA_TONEMAP_CURVE_BLUE = // float[n*2]
+ ACAMERA_TONEMAP_START,
+ /**
+ * <p>Tonemapping / contrast / gamma curve for the green
+ * channel, to use when ACAMERA_TONEMAP_MODE is
+ * CONTRAST_CURVE.</p>
+ *
+ * @see ACAMERA_TONEMAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>See ACAMERA_TONEMAP_CURVE_RED for more details.</p>
+ *
+ * @see ACAMERA_TONEMAP_CURVE_RED
+ */
+ ACAMERA_TONEMAP_CURVE_GREEN = // float[n*2]
+ ACAMERA_TONEMAP_START + 1,
+ /**
+ * <p>Tonemapping / contrast / gamma curve for the red
+ * channel, to use when ACAMERA_TONEMAP_MODE is
+ * CONTRAST_CURVE.</p>
+ *
+ * @see ACAMERA_TONEMAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Each channel's curve is defined by an array of control points:</p>
+ * <pre><code>ACAMERA_TONEMAP_CURVE_RED =
+ * [ P0in, P0out, P1in, P1out, P2in, P2out, P3in, P3out, ..., PNin, PNout ]
+ * 2 <= N <= ACAMERA_TONEMAP_MAX_CURVE_POINTS</code></pre>
+ * <p>These are sorted in order of increasing <code>Pin</code>; it is
+ * required that input values 0.0 and 1.0 are included in the list to
+ * define a complete mapping. For input values between control points,
+ * the camera device must linearly interpolate between the control
+ * points.</p>
+ * <p>Each curve can have an independent number of points, and the number
+ * of points can be less than max (that is, the request doesn't have to
+ * always provide a curve with number of points equivalent to
+ * ACAMERA_TONEMAP_MAX_CURVE_POINTS).</p>
+ * <p>A few examples, and their corresponding graphical mappings; these
+ * only specify the red channel and the precision is limited to 4
+ * digits, for conciseness.</p>
+ * <p>Linear mapping:</p>
+ * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [ 0, 0, 1.0, 1.0 ]
+ * </code></pre>
+ * <p><img alt="Linear mapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p>
+ * <p>Invert mapping:</p>
+ * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [ 0, 1.0, 1.0, 0 ]
+ * </code></pre>
+ * <p><img alt="Inverting mapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p>
+ * <p>Gamma 1/2.2 mapping, with 16 control points:</p>
+ * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [
+ * 0.0000, 0.0000, 0.0667, 0.2920, 0.1333, 0.4002, 0.2000, 0.4812,
+ * 0.2667, 0.5484, 0.3333, 0.6069, 0.4000, 0.6594, 0.4667, 0.7072,
+ * 0.5333, 0.7515, 0.6000, 0.7928, 0.6667, 0.8317, 0.7333, 0.8685,
+ * 0.8000, 0.9035, 0.8667, 0.9370, 0.9333, 0.9691, 1.0000, 1.0000 ]
+ * </code></pre>
+ * <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p>
+ * <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p>
+ * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [
+ * 0.0000, 0.0000, 0.0667, 0.2864, 0.1333, 0.4007, 0.2000, 0.4845,
+ * 0.2667, 0.5532, 0.3333, 0.6125, 0.4000, 0.6652, 0.4667, 0.7130,
+ * 0.5333, 0.7569, 0.6000, 0.7977, 0.6667, 0.8360, 0.7333, 0.8721,
+ * 0.8000, 0.9063, 0.8667, 0.9389, 0.9333, 0.9701, 1.0000, 1.0000 ]
+ * </code></pre>
+ * <p><img alt="sRGB tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
+ *
+ * @see ACAMERA_TONEMAP_CURVE_RED
+ * @see ACAMERA_TONEMAP_MAX_CURVE_POINTS
+ */
+ ACAMERA_TONEMAP_CURVE_RED = // float[n*2]
+ ACAMERA_TONEMAP_START + 2,
+ /**
+ * <p>High-level global contrast/gamma/tonemapping control.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>When switching to an application-defined contrast curve by setting
+ * ACAMERA_TONEMAP_MODE to CONTRAST_CURVE, the curve is defined
+ * per-channel with a set of <code>(in, out)</code> points that specify the
+ * mapping from input high-bit-depth pixel value to the output
+ * low-bit-depth value. Since the actual pixel ranges of both input
+ * and output may change depending on the camera pipeline, the values
+ * are specified by normalized floating-point numbers.</p>
+ * <p>More-complex color mapping operations such as 3D color look-up
+ * tables, selective chroma enhancement, or other non-linear color
+ * transforms will be disabled when ACAMERA_TONEMAP_MODE is
+ * CONTRAST_CURVE.</p>
+ * <p>When using either FAST or HIGH_QUALITY, the camera device will
+ * emit its own tonemap curve in android.tonemap.curve.
+ * These values are always available, and as close as possible to the
+ * actually used nonlinear/nonglobal transforms.</p>
+ * <p>If a request is sent with CONTRAST_CURVE with the camera device's
+ * provided curve in FAST or HIGH_QUALITY, the image's tonemap will be
+ * roughly the same.</p>
+ *
+ * @see ACAMERA_TONEMAP_MODE
+ */
+ ACAMERA_TONEMAP_MODE = // byte (enum)
+ ACAMERA_TONEMAP_START + 3,
+ /**
+ * <p>Maximum number of supported points in the
+ * tonemap curve that can be used for android.tonemap.curve.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If the actual number of points provided by the application (in ACAMERA_TONEMAPCURVE_*) is
+ * less than this maximum, the camera device will resample the curve to its internal
+ * representation, using linear interpolation.</p>
+ * <p>The output curves in the result metadata may have a different number
+ * of points than the input curves, and will represent the actual
+ * hardware curves used as closely as possible when linearly interpolated.</p>
+ */
+ ACAMERA_TONEMAP_MAX_CURVE_POINTS = // int32
+ ACAMERA_TONEMAP_START + 4,
+ /**
+ * <p>List of tonemapping modes for ACAMERA_TONEMAP_MODE that are supported by this camera
+ * device.</p>
+ *
+ * @see ACAMERA_TONEMAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always contain
+ * at least one of below mode combinations:</p>
+ * <ul>
+ * <li>CONTRAST_CURVE, FAST and HIGH_QUALITY</li>
+ * <li>GAMMA_VALUE, PRESET_CURVE, FAST and HIGH_QUALITY</li>
+ * </ul>
+ * <p>This includes all FULL level devices.</p>
+ */
+ ACAMERA_TONEMAP_AVAILABLE_TONE_MAP_MODES = // byte[n]
+ ACAMERA_TONEMAP_START + 5,
+ /**
+ * <p>Tonemapping curve to use when ACAMERA_TONEMAP_MODE is
+ * GAMMA_VALUE</p>
+ *
+ * @see ACAMERA_TONEMAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>The tonemap curve will be defined the following formula:
+ * * OUT = pow(IN, 1.0 / gamma)
+ * where IN and OUT is the input pixel value scaled to range [0.0, 1.0],
+ * pow is the power function and gamma is the gamma value specified by this
+ * key.</p>
+ * <p>The same curve will be applied to all color channels. The camera device
+ * may clip the input gamma value to its supported range. The actual applied
+ * value will be returned in capture result.</p>
+ * <p>The valid range of gamma value varies on different devices, but values
+ * within [1.0, 5.0] are guaranteed not to be clipped.</p>
+ */
+ ACAMERA_TONEMAP_GAMMA = // float
+ ACAMERA_TONEMAP_START + 6,
+ /**
+ * <p>Tonemapping curve to use when ACAMERA_TONEMAP_MODE is
+ * PRESET_CURVE</p>
+ *
+ * @see ACAMERA_TONEMAP_MODE
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>The tonemap curve will be defined by specified standard.</p>
+ * <p>sRGB (approximated by 16 control points):</p>
+ * <p><img alt="sRGB tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
+ * <p>Rec. 709 (approximated by 16 control points):</p>
+ * <p><img alt="Rec. 709 tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/rec709_tonemap.png" /></p>
+ * <p>Note that above figures show a 16 control points approximation of preset
+ * curves. Camera devices may apply a different approximation to the curve.</p>
+ */
+ ACAMERA_TONEMAP_PRESET_CURVE = // byte (enum)
+ ACAMERA_TONEMAP_START + 7,
+ ACAMERA_TONEMAP_END,
+
+ /**
+ * <p>Generally classifies the overall set of the camera device functionality.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>The supported hardware level is a high-level description of the camera device's
+ * capabilities, summarizing several capabilities into one field. Each level adds additional
+ * features to the previous one, and is always a strict superset of the previous level.
+ * The ordering is <code>LEGACY < LIMITED < FULL < LEVEL_3</code>.</p>
+ * <p>Starting from <code>LEVEL_3</code>, the level enumerations are guaranteed to be in increasing
+ * numerical value as well. To check if a given device is at least at a given hardware level,
+ * the following code snippet can be used:</p>
+ * <pre><code>// Returns true if the device supports the required hardware level, or better.
+ * boolean isHardwareLevelSupported(CameraCharacteristics c, int requiredLevel) {
+ * int deviceLevel = c.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
+ * if (deviceLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY) {
+ * return requiredLevel == deviceLevel;
+ * }
+ * // deviceLevel is not LEGACY, can use numerical sort
+ * return requiredLevel <= deviceLevel;
+ * }
+ * </code></pre>
+ * <p>At a high level, the levels are:</p>
+ * <ul>
+ * <li><code>LEGACY</code> devices operate in a backwards-compatibility mode for older
+ * Android devices, and have very limited capabilities.</li>
+ * <li><code>LIMITED</code> devices represent the
+ * baseline feature set, and may also include additional capabilities that are
+ * subsets of <code>FULL</code>.</li>
+ * <li><code>FULL</code> devices additionally support per-frame manual control of sensor, flash, lens and
+ * post-processing settings, and image capture at a high rate.</li>
+ * <li><code>LEVEL_3</code> devices additionally support YUV reprocessing and RAW image capture, along
+ * with additional output stream configurations.</li>
+ * </ul>
+ * <p>See the individual level enums for full descriptions of the supported capabilities. The
+ * ACAMERA_REQUEST_AVAILABLE_CAPABILITIES entry describes the device's capabilities at a
+ * finer-grain level, if needed. In addition, many controls have their available settings or
+ * ranges defined in individual metadata tag entries in this document.</p>
+ * <p>Some features are not part of any particular hardware level or capability and must be
+ * queried separately. These include:</p>
+ * <ul>
+ * <li>Calibrated timestamps (ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> REALTIME)</li>
+ * <li>Precision lens control (ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION <code>==</code> CALIBRATED)</li>
+ * <li>Face detection (ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES)</li>
+ * <li>Optical or electrical image stabilization
+ * (ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION,
+ * ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES)</li>
+ * </ul>
+ *
+ * @see ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
+ * @see ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
+ * @see ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ * @see ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
+ * @see ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
+ */
+ ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL = // byte (enum)
+ ACAMERA_INFO_START,
+ ACAMERA_INFO_END,
+
+ /**
+ * <p>Whether black-level compensation is locked
+ * to its current values, or is free to vary.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * <li>ACaptureRequest</li>
+ * </ul>
+ *
+ * <p>Whether the black level offset was locked for this frame. Should be
+ * ON if ACAMERA_BLACK_LEVEL_LOCK was ON in the capture request, unless
+ * a change in other capture settings forced the camera device to
+ * perform a black level reset.</p>
+ *
+ * @see ACAMERA_BLACK_LEVEL_LOCK
+ */
+ ACAMERA_BLACK_LEVEL_LOCK = // byte (enum)
+ ACAMERA_BLACK_LEVEL_START,
+ ACAMERA_BLACK_LEVEL_END,
+
+ /**
+ * <p>The frame number corresponding to the last request
+ * with which the output result (metadata + buffers) has been fully
+ * synchronized.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>When a request is submitted to the camera device, there is usually a
+ * delay of several frames before the controls get applied. A camera
+ * device may either choose to account for this delay by implementing a
+ * pipeline and carefully submit well-timed atomic control updates, or
+ * it may start streaming control changes that span over several frame
+ * boundaries.</p>
+ * <p>In the latter case, whenever a request's settings change relative to
+ * the previous submitted request, the full set of changes may take
+ * multiple frame durations to fully take effect. Some settings may
+ * take effect sooner (in less frame durations) than others.</p>
+ * <p>While a set of control changes are being propagated, this value
+ * will be CONVERGING.</p>
+ * <p>Once it is fully known that a set of control changes have been
+ * finished propagating, and the resulting updated control settings
+ * have been read back by the camera device, this value will be set
+ * to a non-negative frame number (corresponding to the request to
+ * which the results have synchronized to).</p>
+ * <p>Older camera device implementations may not have a way to detect
+ * when all camera controls have been applied, and will always set this
+ * value to UNKNOWN.</p>
+ * <p>FULL capability devices will always have this value set to the
+ * frame number of the request corresponding to this result.</p>
+ * <p><em>Further details</em>:</p>
+ * <ul>
+ * <li>Whenever a request differs from the last request, any future
+ * results not yet returned may have this value set to CONVERGING (this
+ * could include any in-progress captures not yet returned by the camera
+ * device, for more details see pipeline considerations below).</li>
+ * <li>Submitting a series of multiple requests that differ from the
+ * previous request (e.g. r1, r2, r3 s.t. r1 != r2 != r3)
+ * moves the new synchronization frame to the last non-repeating
+ * request (using the smallest frame number from the contiguous list of
+ * repeating requests).</li>
+ * <li>Submitting the same request repeatedly will not change this value
+ * to CONVERGING, if it was already a non-negative value.</li>
+ * <li>When this value changes to non-negative, that means that all of the
+ * metadata controls from the request have been applied, all of the
+ * metadata controls from the camera device have been read to the
+ * updated values (into the result), and all of the graphics buffers
+ * corresponding to this result are also synchronized to the request.</li>
+ * </ul>
+ * <p><em>Pipeline considerations</em>:</p>
+ * <p>Submitting a request with updated controls relative to the previously
+ * submitted requests may also invalidate the synchronization state
+ * of all the results corresponding to currently in-flight requests.</p>
+ * <p>In other words, results for this current request and up to
+ * ACAMERA_REQUEST_PIPELINE_MAX_DEPTH prior requests may have their
+ * ACAMERA_SYNC_FRAME_NUMBER change to CONVERGING.</p>
+ *
+ * @see ACAMERA_REQUEST_PIPELINE_MAX_DEPTH
+ * @see ACAMERA_SYNC_FRAME_NUMBER
+ */
+ ACAMERA_SYNC_FRAME_NUMBER = // int64 (enum)
+ ACAMERA_SYNC_START,
+ /**
+ * <p>The maximum number of frames that can occur after a request
+ * (different than the previous) has been submitted, and before the
+ * result's state becomes synchronized.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This defines the maximum distance (in number of metadata results),
+ * between the frame number of the request that has new controls to apply
+ * and the frame number of the result that has all the controls applied.</p>
+ * <p>In other words this acts as an upper boundary for how many frames
+ * must occur before the camera device knows for a fact that the new
+ * submitted camera settings have been applied in outgoing frames.</p>
+ */
+ ACAMERA_SYNC_MAX_LATENCY = // int32 (enum)
+ ACAMERA_SYNC_START + 1,
+ ACAMERA_SYNC_END,
+
+ /**
+ * <p>The available depth dataspace stream
+ * configurations that this camera device supports
+ * (i.e. format, width, height, output/input stream).</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>These are output stream configurations for use with
+ * dataSpace HAL_DATASPACE_DEPTH. The configurations are
+ * listed as <code>(format, width, height, input?)</code> tuples.</p>
+ * <p>Only devices that support depth output for at least
+ * the HAL_PIXEL_FORMAT_Y16 dense depth map may include
+ * this entry.</p>
+ * <p>A device that also supports the HAL_PIXEL_FORMAT_BLOB
+ * sparse depth point cloud must report a single entry for
+ * the format in this list as <code>(HAL_PIXEL_FORMAT_BLOB,
+ * android.depth.maxDepthSamples, 1, OUTPUT)</code> in addition to
+ * the entries for HAL_PIXEL_FORMAT_Y16.</p>
+ */
+ ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS = // int32[n*4] (enum)
+ ACAMERA_DEPTH_START + 1,
+ /**
+ * <p>This lists the minimum frame duration for each
+ * format/size combination for depth output formats.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>This should correspond to the frame duration when only that
+ * stream is active, with all processing (typically in android.*.mode)
+ * set to either OFF or FAST.</p>
+ * <p>When multiple streams are used in a request, the minimum frame
+ * duration will be max(individual stream min durations).</p>
+ * <p>The minimum frame duration of a stream (of a particular format, size)
+ * is the same regardless of whether the stream is input or output.</p>
+ * <p>See ACAMERA_SENSOR_FRAME_DURATION and
+ * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for more details about
+ * calculating the max frame rate.</p>
+ *
+ * @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ */
+ ACAMERA_DEPTH_AVAILABLE_DEPTH_MIN_FRAME_DURATIONS = // int64[4*n]
+ ACAMERA_DEPTH_START + 2,
+ /**
+ * <p>This lists the maximum stall duration for each
+ * output format/size combination for depth streams.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>A stall duration is how much extra time would get added
+ * to the normal minimum frame duration for a repeating request
+ * that has streams with non-zero stall.</p>
+ * <p>This functions similarly to
+ * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for depth
+ * streams.</p>
+ * <p>All depth output stream formats may have a nonzero stall
+ * duration.</p>
+ *
+ * @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
+ */
+ ACAMERA_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS = // int64[4*n]
+ ACAMERA_DEPTH_START + 3,
+ /**
+ * <p>Indicates whether a capture request may target both a
+ * DEPTH16 / DEPTH_POINT_CLOUD output, and normal color outputs (such as
+ * YUV_420_888, JPEG, or RAW) simultaneously.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+ * </ul>
+ *
+ * <p>If TRUE, including both depth and color outputs in a single
+ * capture request is not supported. An application must interleave color
+ * and depth requests. If FALSE, a single request can target both types
+ * of output.</p>
+ * <p>Typically, this restriction exists on camera devices that
+ * need to emit a specific pattern or wavelength of light to
+ * measure depth values, which causes the color image to be
+ * corrupted during depth measurement.</p>
+ */
+ ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE = // byte (enum)
+ ACAMERA_DEPTH_START + 4,
+ ACAMERA_DEPTH_END,
+
+} acamera_metadata_tag_t;
+
+/**
+ * Enumeration definitions for the various entries that need them
+ */
+
+// ACAMERA_COLOR_CORRECTION_MODE
+typedef enum acamera_metadata_enum_acamera_color_correction_mode {
+ /**
+ * <p>Use the ACAMERA_COLOR_CORRECTION_TRANSFORM matrix
+ * and ACAMERA_COLOR_CORRECTION_GAINS to do color conversion.</p>
+ * <p>All advanced white balance adjustments (not specified
+ * by our white balance pipeline) must be disabled.</p>
+ * <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
+ * TRANSFORM_MATRIX is ignored. The camera device will override
+ * this value to either FAST or HIGH_QUALITY.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * @see ACAMERA_CONTROL_AWB_MODE
+ */
+ ACAMERA_COLOR_CORRECTION_MODE_TRANSFORM_MATRIX = 0,
+
+ /**
+ * <p>Color correction processing must not slow down
+ * capture rate relative to sensor raw output.</p>
+ * <p>Advanced white balance adjustments above and beyond
+ * the specified white balance pipeline may be applied.</p>
+ * <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
+ * the camera device uses the last frame's AWB values
+ * (or defaults if AWB has never been run).</p>
+ *
+ * @see ACAMERA_CONTROL_AWB_MODE
+ */
+ ACAMERA_COLOR_CORRECTION_MODE_FAST = 1,
+
+ /**
+ * <p>Color correction processing operates at improved
+ * quality but the capture rate might be reduced (relative to sensor
+ * raw output rate)</p>
+ * <p>Advanced white balance adjustments above and beyond
+ * the specified white balance pipeline may be applied.</p>
+ * <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
+ * the camera device uses the last frame's AWB values
+ * (or defaults if AWB has never been run).</p>
+ *
+ * @see ACAMERA_CONTROL_AWB_MODE
+ */
+ ACAMERA_COLOR_CORRECTION_MODE_HIGH_QUALITY = 2,
+
+} acamera_metadata_enum_android_color_correction_mode_t;
+
+// ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+typedef enum acamera_metadata_enum_acamera_color_correction_aberration_mode {
+ /**
+ * <p>No aberration correction is applied.</p>
+ */
+ ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_OFF = 0,
+
+ /**
+ * <p>Aberration correction will not slow down capture rate
+ * relative to sensor raw output.</p>
+ */
+ ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_FAST = 1,
+
+ /**
+ * <p>Aberration correction operates at improved quality but the capture rate might be
+ * reduced (relative to sensor raw output rate)</p>
+ */
+ ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY = 2,
+
+} acamera_metadata_enum_android_color_correction_aberration_mode_t;
+
+
+// ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+typedef enum acamera_metadata_enum_acamera_control_ae_antibanding_mode {
+ /**
+ * <p>The camera device will not adjust exposure duration to
+ * avoid banding problems.</p>
+ */
+ ACAMERA_CONTROL_AE_ANTIBANDING_MODE_OFF = 0,
+
+ /**
+ * <p>The camera device will adjust exposure duration to
+ * avoid banding problems with 50Hz illumination sources.</p>
+ */
+ ACAMERA_CONTROL_AE_ANTIBANDING_MODE_50HZ = 1,
+
+ /**
+ * <p>The camera device will adjust exposure duration to
+ * avoid banding problems with 60Hz illumination
+ * sources.</p>
+ */
+ ACAMERA_CONTROL_AE_ANTIBANDING_MODE_60HZ = 2,
+
+ /**
+ * <p>The camera device will automatically adapt its
+ * antibanding routine to the current illumination
+ * condition. This is the default mode if AUTO is
+ * available on given camera device.</p>
+ */
+ ACAMERA_CONTROL_AE_ANTIBANDING_MODE_AUTO = 3,
+
+} acamera_metadata_enum_android_control_ae_antibanding_mode_t;
+
+// ACAMERA_CONTROL_AE_LOCK
+typedef enum acamera_metadata_enum_acamera_control_ae_lock {
+ /**
+ * <p>Auto-exposure lock is disabled; the AE algorithm
+ * is free to update its parameters.</p>
+ */
+ ACAMERA_CONTROL_AE_LOCK_OFF = 0,
+
+ /**
+ * <p>Auto-exposure lock is enabled; the AE algorithm
+ * must not update the exposure and sensitivity parameters
+ * while the lock is active.</p>
+ * <p>ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION setting changes
+ * will still take effect while auto-exposure is locked.</p>
+ * <p>Some rare LEGACY devices may not support
+ * this, in which case the value will always be overridden to OFF.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+ */
+ ACAMERA_CONTROL_AE_LOCK_ON = 1,
+
+} acamera_metadata_enum_android_control_ae_lock_t;
+
+// ACAMERA_CONTROL_AE_MODE
+typedef enum acamera_metadata_enum_acamera_control_ae_mode {
+ /**
+ * <p>The camera device's autoexposure routine is disabled.</p>
+ * <p>The application-selected ACAMERA_SENSOR_EXPOSURE_TIME,
+ * ACAMERA_SENSOR_SENSITIVITY and
+ * ACAMERA_SENSOR_FRAME_DURATION are used by the camera
+ * device, along with ACAMERA_FLASH_* fields, if there's
+ * a flash unit for this camera device.</p>
+ * <p>Note that auto-white balance (AWB) and auto-focus (AF)
+ * behavior is device dependent when AE is in OFF mode.
+ * To have consistent behavior across different devices,
+ * it is recommended to either set AWB and AF to OFF mode
+ * or lock AWB and AF before setting AE to OFF.
+ * See ACAMERA_CONTROL_AWB_MODE, ACAMERA_CONTROL_AF_MODE,
+ * ACAMERA_CONTROL_AWB_LOCK, and ACAMERA_CONTROL_AF_TRIGGER
+ * for more details.</p>
+ * <p>LEGACY devices do not support the OFF mode and will
+ * override attempts to use this value to ON.</p>
+ *
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_CONTROL_AF_TRIGGER
+ * @see ACAMERA_CONTROL_AWB_LOCK
+ * @see ACAMERA_CONTROL_AWB_MODE
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_CONTROL_AE_MODE_OFF = 0,
+
+ /**
+ * <p>The camera device's autoexposure routine is active,
+ * with no flash control.</p>
+ * <p>The application's values for
+ * ACAMERA_SENSOR_EXPOSURE_TIME,
+ * ACAMERA_SENSOR_SENSITIVITY, and
+ * ACAMERA_SENSOR_FRAME_DURATION are ignored. The
+ * application has control over the various
+ * ACAMERA_FLASH_* fields.</p>
+ *
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_CONTROL_AE_MODE_ON = 1,
+
+ /**
+ * <p>Like ON, except that the camera device also controls
+ * the camera's flash unit, firing it in low-light
+ * conditions.</p>
+ * <p>The flash may be fired during a precapture sequence
+ * (triggered by ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER) and
+ * may be fired for captures for which the
+ * ACAMERA_CONTROL_CAPTURE_INTENT field is set to
+ * STILL_CAPTURE</p>
+ *
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ */
+ ACAMERA_CONTROL_AE_MODE_ON_AUTO_FLASH = 2,
+
+ /**
+ * <p>Like ON, except that the camera device also controls
+ * the camera's flash unit, always firing it for still
+ * captures.</p>
+ * <p>The flash may be fired during a precapture sequence
+ * (triggered by ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER) and
+ * will always be fired for captures for which the
+ * ACAMERA_CONTROL_CAPTURE_INTENT field is set to
+ * STILL_CAPTURE</p>
+ *
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ */
+ ACAMERA_CONTROL_AE_MODE_ON_ALWAYS_FLASH = 3,
+
+ /**
+ * <p>Like ON_AUTO_FLASH, but with automatic red eye
+ * reduction.</p>
+ * <p>If deemed necessary by the camera device, a red eye
+ * reduction flash will fire during the precapture
+ * sequence.</p>
+ */
+ ACAMERA_CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE = 4,
+
+} acamera_metadata_enum_android_control_ae_mode_t;
+
+// ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+typedef enum acamera_metadata_enum_acamera_control_ae_precapture_trigger {
+ /**
+ * <p>The trigger is idle.</p>
+ */
+ ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_IDLE = 0,
+
+ /**
+ * <p>The precapture metering sequence will be started
+ * by the camera device.</p>
+ * <p>The exact effect of the precapture trigger depends on
+ * the current AE mode and state.</p>
+ */
+ ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_START = 1,
+
+ /**
+ * <p>The camera device will cancel any currently active or completed
+ * precapture metering sequence, the auto-exposure routine will return to its
+ * initial state.</p>
+ */
+ ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL = 2,
+
+} acamera_metadata_enum_android_control_ae_precapture_trigger_t;
+
+// ACAMERA_CONTROL_AF_MODE
+typedef enum acamera_metadata_enum_acamera_control_af_mode {
+ /**
+ * <p>The auto-focus routine does not control the lens;
+ * ACAMERA_LENS_FOCUS_DISTANCE is controlled by the
+ * application.</p>
+ *
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ */
+ ACAMERA_CONTROL_AF_MODE_OFF = 0,
+
+ /**
+ * <p>Basic automatic focus mode.</p>
+ * <p>In this mode, the lens does not move unless
+ * the autofocus trigger action is called. When that trigger
+ * is activated, AF will transition to ACTIVE_SCAN, then to
+ * the outcome of the scan (FOCUSED or NOT_FOCUSED).</p>
+ * <p>Always supported if lens is not fixed focus.</p>
+ * <p>Use ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE to determine if lens
+ * is fixed-focus.</p>
+ * <p>Triggering AF_CANCEL resets the lens position to default,
+ * and sets the AF state to INACTIVE.</p>
+ *
+ * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+ */
+ ACAMERA_CONTROL_AF_MODE_AUTO = 1,
+
+ /**
+ * <p>Close-up focusing mode.</p>
+ * <p>In this mode, the lens does not move unless the
+ * autofocus trigger action is called. When that trigger is
+ * activated, AF will transition to ACTIVE_SCAN, then to
+ * the outcome of the scan (FOCUSED or NOT_FOCUSED). This
+ * mode is optimized for focusing on objects very close to
+ * the camera.</p>
+ * <p>When that trigger is activated, AF will transition to
+ * ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or
+ * NOT_FOCUSED). Triggering cancel AF resets the lens
+ * position to default, and sets the AF state to
+ * INACTIVE.</p>
+ */
+ ACAMERA_CONTROL_AF_MODE_MACRO = 2,
+
+ /**
+ * <p>In this mode, the AF algorithm modifies the lens
+ * position continually to attempt to provide a
+ * constantly-in-focus image stream.</p>
+ * <p>The focusing behavior should be suitable for good quality
+ * video recording; typically this means slower focus
+ * movement and no overshoots. When the AF trigger is not
+ * involved, the AF algorithm should start in INACTIVE state,
+ * and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED
+ * states as appropriate. When the AF trigger is activated,
+ * the algorithm should immediately transition into
+ * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
+ * lens position until a cancel AF trigger is received.</p>
+ * <p>Once cancel is received, the algorithm should transition
+ * back to INACTIVE and resume passive scan. Note that this
+ * behavior is not identical to CONTINUOUS_PICTURE, since an
+ * ongoing PASSIVE_SCAN must immediately be
+ * canceled.</p>
+ */
+ ACAMERA_CONTROL_AF_MODE_CONTINUOUS_VIDEO = 3,
+
+ /**
+ * <p>In this mode, the AF algorithm modifies the lens
+ * position continually to attempt to provide a
+ * constantly-in-focus image stream.</p>
+ * <p>The focusing behavior should be suitable for still image
+ * capture; typically this means focusing as fast as
+ * possible. When the AF trigger is not involved, the AF
+ * algorithm should start in INACTIVE state, and then
+ * transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as
+ * appropriate as it attempts to maintain focus. When the AF
+ * trigger is activated, the algorithm should finish its
+ * PASSIVE_SCAN if active, and then transition into
+ * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
+ * lens position until a cancel AF trigger is received.</p>
+ * <p>When the AF cancel trigger is activated, the algorithm
+ * should transition back to INACTIVE and then act as if it
+ * has just been started.</p>
+ */
+ ACAMERA_CONTROL_AF_MODE_CONTINUOUS_PICTURE = 4,
+
+ /**
+ * <p>Extended depth of field (digital focus) mode.</p>
+ * <p>The camera device will produce images with an extended
+ * depth of field automatically; no special focusing
+ * operations need to be done before taking a picture.</p>
+ * <p>AF triggers are ignored, and the AF state will always be
+ * INACTIVE.</p>
+ */
+ ACAMERA_CONTROL_AF_MODE_EDOF = 5,
+
+} acamera_metadata_enum_android_control_af_mode_t;
+
+// ACAMERA_CONTROL_AF_TRIGGER
+typedef enum acamera_metadata_enum_acamera_control_af_trigger {
+ /**
+ * <p>The trigger is idle.</p>
+ */
+ ACAMERA_CONTROL_AF_TRIGGER_IDLE = 0,
+
+ /**
+ * <p>Autofocus will trigger now.</p>
+ */
+ ACAMERA_CONTROL_AF_TRIGGER_START = 1,
+
+ /**
+ * <p>Autofocus will return to its initial
+ * state, and cancel any currently active trigger.</p>
+ */
+ ACAMERA_CONTROL_AF_TRIGGER_CANCEL = 2,
+
+} acamera_metadata_enum_android_control_af_trigger_t;
+
+// ACAMERA_CONTROL_AWB_LOCK
+typedef enum acamera_metadata_enum_acamera_control_awb_lock {
+ /**
+ * <p>Auto-white balance lock is disabled; the AWB
+ * algorithm is free to update its parameters if in AUTO
+ * mode.</p>
+ */
+ ACAMERA_CONTROL_AWB_LOCK_OFF = 0,
+
+ /**
+ * <p>Auto-white balance lock is enabled; the AWB
+ * algorithm will not update its parameters while the lock
+ * is active.</p>
+ */
+ ACAMERA_CONTROL_AWB_LOCK_ON = 1,
+
+} acamera_metadata_enum_android_control_awb_lock_t;
+
+// ACAMERA_CONTROL_AWB_MODE
+typedef enum acamera_metadata_enum_acamera_control_awb_mode {
+ /**
+ * <p>The camera device's auto-white balance routine is disabled.</p>
+ * <p>The application-selected color transform matrix
+ * (ACAMERA_COLOR_CORRECTION_TRANSFORM) and gains
+ * (ACAMERA_COLOR_CORRECTION_GAINS) are used by the camera
+ * device for manual white balance control.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_OFF = 0,
+
+ /**
+ * <p>The camera device's auto-white balance routine is active.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_AUTO = 1,
+
+ /**
+ * <p>The camera device's auto-white balance routine is disabled;
+ * the camera device uses incandescent light as the assumed scene
+ * illumination for white balance.</p>
+ * <p>While the exact white balance transforms are up to the
+ * camera device, they will approximately match the CIE
+ * standard illuminant A.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_INCANDESCENT = 2,
+
+ /**
+ * <p>The camera device's auto-white balance routine is disabled;
+ * the camera device uses fluorescent light as the assumed scene
+ * illumination for white balance.</p>
+ * <p>While the exact white balance transforms are up to the
+ * camera device, they will approximately match the CIE
+ * standard illuminant F2.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_FLUORESCENT = 3,
+
+ /**
+ * <p>The camera device's auto-white balance routine is disabled;
+ * the camera device uses warm fluorescent light as the assumed scene
+ * illumination for white balance.</p>
+ * <p>While the exact white balance transforms are up to the
+ * camera device, they will approximately match the CIE
+ * standard illuminant F4.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_WARM_FLUORESCENT = 4,
+
+ /**
+ * <p>The camera device's auto-white balance routine is disabled;
+ * the camera device uses daylight light as the assumed scene
+ * illumination for white balance.</p>
+ * <p>While the exact white balance transforms are up to the
+ * camera device, they will approximately match the CIE
+ * standard illuminant D65.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_DAYLIGHT = 5,
+
+ /**
+ * <p>The camera device's auto-white balance routine is disabled;
+ * the camera device uses cloudy daylight light as the assumed scene
+ * illumination for white balance.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_CLOUDY_DAYLIGHT = 6,
+
+ /**
+ * <p>The camera device's auto-white balance routine is disabled;
+ * the camera device uses twilight light as the assumed scene
+ * illumination for white balance.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_TWILIGHT = 7,
+
+ /**
+ * <p>The camera device's auto-white balance routine is disabled;
+ * the camera device uses shade light as the assumed scene
+ * illumination for white balance.</p>
+ * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+ * For devices that support the MANUAL_POST_PROCESSING capability, the
+ * values used by the camera device for the transform and gains
+ * will be available in the capture result for this request.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ */
+ ACAMERA_CONTROL_AWB_MODE_SHADE = 8,
+
+} acamera_metadata_enum_android_control_awb_mode_t;
+
+// ACAMERA_CONTROL_CAPTURE_INTENT
+typedef enum acamera_metadata_enum_acamera_control_capture_intent {
+ /**
+ * <p>The goal of this request doesn't fall into the other
+ * categories. The camera device will default to preview-like
+ * behavior.</p>
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT_CUSTOM = 0,
+
+ /**
+ * <p>This request is for a preview-like use case.</p>
+ * <p>The precapture trigger may be used to start off a metering
+ * w/flash sequence.</p>
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT_PREVIEW = 1,
+
+ /**
+ * <p>This request is for a still capture-type
+ * use case.</p>
+ * <p>If the flash unit is under automatic control, it may fire as needed.</p>
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT_STILL_CAPTURE = 2,
+
+ /**
+ * <p>This request is for a video recording
+ * use case.</p>
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT_VIDEO_RECORD = 3,
+
+ /**
+ * <p>This request is for a video snapshot (still
+ * image while recording video) use case.</p>
+ * <p>The camera device should take the highest-quality image
+ * possible (given the other settings) without disrupting the
+ * frame rate of video recording. </p>
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT = 4,
+
+ /**
+ * <p>This request is for a ZSL usecase; the
+ * application will stream full-resolution images and
+ * reprocess one or several later for a final
+ * capture.</p>
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG = 5,
+
+ /**
+ * <p>This request is for manual capture use case where
+ * the applications want to directly control the capture parameters.</p>
+ * <p>For example, the application may wish to manually control
+ * ACAMERA_SENSOR_EXPOSURE_TIME, ACAMERA_SENSOR_SENSITIVITY, etc.</p>
+ *
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_CONTROL_CAPTURE_INTENT_MANUAL = 6,
+
+} acamera_metadata_enum_android_control_capture_intent_t;
+
+// ACAMERA_CONTROL_EFFECT_MODE
+typedef enum acamera_metadata_enum_acamera_control_effect_mode {
+ /**
+ * <p>No color effect will be applied.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_OFF = 0,
+
+ /**
+ * <p>A "monocolor" effect where the image is mapped into
+ * a single color.</p>
+ * <p>This will typically be grayscale.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_MONO = 1,
+
+ /**
+ * <p>A "photo-negative" effect where the image's colors
+ * are inverted.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_NEGATIVE = 2,
+
+ /**
+ * <p>A "solarisation" effect (Sabattier effect) where the
+ * image is wholly or partially reversed in
+ * tone.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_SOLARIZE = 3,
+
+ /**
+ * <p>A "sepia" effect where the image is mapped into warm
+ * gray, red, and brown tones.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_SEPIA = 4,
+
+ /**
+ * <p>A "posterization" effect where the image uses
+ * discrete regions of tone rather than a continuous
+ * gradient of tones.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_POSTERIZE = 5,
+
+ /**
+ * <p>A "whiteboard" effect where the image is typically displayed
+ * as regions of white, with black or grey details.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_WHITEBOARD = 6,
+
+ /**
+ * <p>A "blackboard" effect where the image is typically displayed
+ * as regions of black, with white or grey details.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_BLACKBOARD = 7,
+
+ /**
+ * <p>An "aqua" effect where a blue hue is added to the image.</p>
+ */
+ ACAMERA_CONTROL_EFFECT_MODE_AQUA = 8,
+
+} acamera_metadata_enum_android_control_effect_mode_t;
+
+// ACAMERA_CONTROL_MODE
+typedef enum acamera_metadata_enum_acamera_control_mode {
+ /**
+ * <p>Full application control of pipeline.</p>
+ * <p>All control by the device's metering and focusing (3A)
+ * routines is disabled, and no other settings in
+ * ACAMERA_CONTROL_* have any effect, except that
+ * ACAMERA_CONTROL_CAPTURE_INTENT may be used by the camera
+ * device to select post-processing values for processing
+ * blocks that do not allow for manual control, or are not
+ * exposed by the camera API.</p>
+ * <p>However, the camera device's 3A routines may continue to
+ * collect statistics and update their internal state so that
+ * when control is switched to AUTO mode, good control values
+ * can be immediately applied.</p>
+ *
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ */
+ ACAMERA_CONTROL_MODE_OFF = 0,
+
+ /**
+ * <p>Use settings for each individual 3A routine.</p>
+ * <p>Manual control of capture parameters is disabled. All
+ * controls in ACAMERA_CONTROL_* besides sceneMode take
+ * effect.</p>
+ */
+ ACAMERA_CONTROL_MODE_AUTO = 1,
+
+ /**
+ * <p>Use a specific scene mode.</p>
+ * <p>Enabling this disables control.aeMode, control.awbMode and
+ * control.afMode controls; the camera device will ignore
+ * those settings while USE_SCENE_MODE is active (except for
+ * FACE_PRIORITY scene mode). Other control entries are still active.
+ * This setting can only be used if scene mode is supported (i.e.
+ * ACAMERA_CONTROL_AVAILABLE_SCENE_MODES
+ * contain some modes other than DISABLED).</p>
+ *
+ * @see ACAMERA_CONTROL_AVAILABLE_SCENE_MODES
+ */
+ ACAMERA_CONTROL_MODE_USE_SCENE_MODE = 2,
+
+ /**
+ * <p>Same as OFF mode, except that this capture will not be
+ * used by camera device background auto-exposure, auto-white balance and
+ * auto-focus algorithms (3A) to update their statistics.</p>
+ * <p>Specifically, the 3A routines are locked to the last
+ * values set from a request with AUTO, OFF, or
+ * USE_SCENE_MODE, and any statistics or state updates
+ * collected from manual captures with OFF_KEEP_STATE will be
+ * discarded by the camera device.</p>
+ */
+ ACAMERA_CONTROL_MODE_OFF_KEEP_STATE = 3,
+
+} acamera_metadata_enum_android_control_mode_t;
+
+// ACAMERA_CONTROL_SCENE_MODE
+typedef enum acamera_metadata_enum_acamera_control_scene_mode {
+ /**
+ * <p>Indicates that no scene modes are set for a given capture request.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_DISABLED = 0,
+
+ /**
+ * <p>If face detection support exists, use face
+ * detection data for auto-focus, auto-white balance, and
+ * auto-exposure routines.</p>
+ * <p>If face detection statistics are disabled
+ * (i.e. ACAMERA_STATISTICS_FACE_DETECT_MODE is set to OFF),
+ * this should still operate correctly (but will not return
+ * face detection statistics to the framework).</p>
+ * <p>Unlike the other scene modes, ACAMERA_CONTROL_AE_MODE,
+ * ACAMERA_CONTROL_AWB_MODE, and ACAMERA_CONTROL_AF_MODE
+ * remain active when FACE_PRIORITY is set.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_CONTROL_AWB_MODE
+ * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+ */
+ ACAMERA_CONTROL_SCENE_MODE_FACE_PRIORITY = 1,
+
+ /**
+ * <p>Optimized for photos of quickly moving objects.</p>
+ * <p>Similar to SPORTS.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_ACTION = 2,
+
+ /**
+ * <p>Optimized for still photos of people.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_PORTRAIT = 3,
+
+ /**
+ * <p>Optimized for photos of distant macroscopic objects.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_LANDSCAPE = 4,
+
+ /**
+ * <p>Optimized for low-light settings.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_NIGHT = 5,
+
+ /**
+ * <p>Optimized for still photos of people in low-light
+ * settings.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_NIGHT_PORTRAIT = 6,
+
+ /**
+ * <p>Optimized for dim, indoor settings where flash must
+ * remain off.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_THEATRE = 7,
+
+ /**
+ * <p>Optimized for bright, outdoor beach settings.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_BEACH = 8,
+
+ /**
+ * <p>Optimized for bright, outdoor settings containing snow.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_SNOW = 9,
+
+ /**
+ * <p>Optimized for scenes of the setting sun.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_SUNSET = 10,
+
+ /**
+ * <p>Optimized to avoid blurry photos due to small amounts of
+ * device motion (for example: due to hand shake).</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_STEADYPHOTO = 11,
+
+ /**
+ * <p>Optimized for nighttime photos of fireworks.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_FIREWORKS = 12,
+
+ /**
+ * <p>Optimized for photos of quickly moving people.</p>
+ * <p>Similar to ACTION.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_SPORTS = 13,
+
+ /**
+ * <p>Optimized for dim, indoor settings with multiple moving
+ * people.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_PARTY = 14,
+
+ /**
+ * <p>Optimized for dim settings where the main light source
+ * is a flame.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_CANDLELIGHT = 15,
+
+ /**
+ * <p>Optimized for accurately capturing a photo of barcode
+ * for use by camera applications that wish to read the
+ * barcode value.</p>
+ */
+ ACAMERA_CONTROL_SCENE_MODE_BARCODE = 16,
+
+ /**
+ * <p>Turn on a device-specific high dynamic range (HDR) mode.</p>
+ * <p>In this scene mode, the camera device captures images
+ * that keep a larger range of scene illumination levels
+ * visible in the final image. For example, when taking a
+ * picture of a object in front of a bright window, both
+ * the object and the scene through the window may be
+ * visible when using HDR mode, while in normal AUTO mode,
+ * one or the other may be poorly exposed. As a tradeoff,
+ * HDR mode generally takes much longer to capture a single
+ * image, has no user control, and may have other artifacts
+ * depending on the HDR method used.</p>
+ * <p>Therefore, HDR captures operate at a much slower rate
+ * than regular captures.</p>
+ * <p>In this mode, on LIMITED or FULL devices, when a request
+ * is made with a ACAMERA_CONTROL_CAPTURE_INTENT of
+ * STILL_CAPTURE, the camera device will capture an image
+ * using a high dynamic range capture technique. On LEGACY
+ * devices, captures that target a JPEG-format output will
+ * be captured with HDR, and the capture intent is not
+ * relevant.</p>
+ * <p>The HDR capture may involve the device capturing a burst
+ * of images internally and combining them into one, or it
+ * may involve the device using specialized high dynamic
+ * range capture hardware. In all cases, a single image is
+ * produced in response to a capture request submitted
+ * while in HDR mode.</p>
+ * <p>Since substantial post-processing is generally needed to
+ * produce an HDR image, only YUV, PRIVATE, and JPEG
+ * outputs are supported for LIMITED/FULL device HDR
+ * captures, and only JPEG outputs are supported for LEGACY
+ * HDR captures. Using a RAW output for HDR capture is not
+ * supported.</p>
+ * <p>Some devices may also support always-on HDR, which
+ * applies HDR processing at full frame rate. For these
+ * devices, intents other than STILL_CAPTURE will also
+ * produce an HDR output with no frame rate impact compared
+ * to normal operation, though the quality may be lower
+ * than for STILL_CAPTURE intents.</p>
+ * <p>If SCENE_MODE_HDR is used with unsupported output types
+ * or capture intents, the images captured will be as if
+ * the SCENE_MODE was not enabled at all.</p>
+ *
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ */
+ ACAMERA_CONTROL_SCENE_MODE_HDR = 18,
+
+} acamera_metadata_enum_android_control_scene_mode_t;
+
+// ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+typedef enum acamera_metadata_enum_acamera_control_video_stabilization_mode {
+ /**
+ * <p>Video stabilization is disabled.</p>
+ */
+ ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE_OFF = 0,
+
+ /**
+ * <p>Video stabilization is enabled.</p>
+ */
+ ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE_ON = 1,
+
+} acamera_metadata_enum_android_control_video_stabilization_mode_t;
+
+// ACAMERA_CONTROL_AE_STATE
+typedef enum acamera_metadata_enum_acamera_control_ae_state {
+ /**
+ * <p>AE is off or recently reset.</p>
+ * <p>When a camera device is opened, it starts in
+ * this state. This is a transient state, the camera device may skip reporting
+ * this state in capture result.</p>
+ */
+ ACAMERA_CONTROL_AE_STATE_INACTIVE = 0,
+
+ /**
+ * <p>AE doesn't yet have a good set of control values
+ * for the current scene.</p>
+ * <p>This is a transient state, the camera device may skip
+ * reporting this state in capture result.</p>
+ */
+ ACAMERA_CONTROL_AE_STATE_SEARCHING = 1,
+
+ /**
+ * <p>AE has a good set of control values for the
+ * current scene.</p>
+ */
+ ACAMERA_CONTROL_AE_STATE_CONVERGED = 2,
+
+ /**
+ * <p>AE has been locked.</p>
+ */
+ ACAMERA_CONTROL_AE_STATE_LOCKED = 3,
+
+ /**
+ * <p>AE has a good set of control values, but flash
+ * needs to be fired for good quality still
+ * capture.</p>
+ */
+ ACAMERA_CONTROL_AE_STATE_FLASH_REQUIRED = 4,
+
+ /**
+ * <p>AE has been asked to do a precapture sequence
+ * and is currently executing it.</p>
+ * <p>Precapture can be triggered through setting
+ * ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER to START. Currently
+ * active and completed (if it causes camera device internal AE lock) precapture
+ * metering sequence can be canceled through setting
+ * ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER to CANCEL.</p>
+ * <p>Once PRECAPTURE completes, AE will transition to CONVERGED
+ * or FLASH_REQUIRED as appropriate. This is a transient
+ * state, the camera device may skip reporting this state in
+ * capture result.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ */
+ ACAMERA_CONTROL_AE_STATE_PRECAPTURE = 5,
+
+} acamera_metadata_enum_android_control_ae_state_t;
+
+// ACAMERA_CONTROL_AF_STATE
+typedef enum acamera_metadata_enum_acamera_control_af_state {
+ /**
+ * <p>AF is off or has not yet tried to scan/been asked
+ * to scan.</p>
+ * <p>When a camera device is opened, it starts in this
+ * state. This is a transient state, the camera device may
+ * skip reporting this state in capture
+ * result.</p>
+ */
+ ACAMERA_CONTROL_AF_STATE_INACTIVE = 0,
+
+ /**
+ * <p>AF is currently performing an AF scan initiated the
+ * camera device in a continuous autofocus mode.</p>
+ * <p>Only used by CONTINUOUS_* AF modes. This is a transient
+ * state, the camera device may skip reporting this state in
+ * capture result.</p>
+ */
+ ACAMERA_CONTROL_AF_STATE_PASSIVE_SCAN = 1,
+
+ /**
+ * <p>AF currently believes it is in focus, but may
+ * restart scanning at any time.</p>
+ * <p>Only used by CONTINUOUS_* AF modes. This is a transient
+ * state, the camera device may skip reporting this state in
+ * capture result.</p>
+ */
+ ACAMERA_CONTROL_AF_STATE_PASSIVE_FOCUSED = 2,
+
+ /**
+ * <p>AF is performing an AF scan because it was
+ * triggered by AF trigger.</p>
+ * <p>Only used by AUTO or MACRO AF modes. This is a transient
+ * state, the camera device may skip reporting this state in
+ * capture result.</p>
+ */
+ ACAMERA_CONTROL_AF_STATE_ACTIVE_SCAN = 3,
+
+ /**
+ * <p>AF believes it is focused correctly and has locked
+ * focus.</p>
+ * <p>This state is reached only after an explicit START AF trigger has been
+ * sent (ACAMERA_CONTROL_AF_TRIGGER), when good focus has been obtained.</p>
+ * <p>The lens will remain stationary until the AF mode (ACAMERA_CONTROL_AF_MODE) is changed or
+ * a new AF trigger is sent to the camera device (ACAMERA_CONTROL_AF_TRIGGER).</p>
+ *
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_CONTROL_AF_TRIGGER
+ */
+ ACAMERA_CONTROL_AF_STATE_FOCUSED_LOCKED = 4,
+
+ /**
+ * <p>AF has failed to focus successfully and has locked
+ * focus.</p>
+ * <p>This state is reached only after an explicit START AF trigger has been
+ * sent (ACAMERA_CONTROL_AF_TRIGGER), when good focus cannot be obtained.</p>
+ * <p>The lens will remain stationary until the AF mode (ACAMERA_CONTROL_AF_MODE) is changed or
+ * a new AF trigger is sent to the camera device (ACAMERA_CONTROL_AF_TRIGGER).</p>
+ *
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_CONTROL_AF_TRIGGER
+ */
+ ACAMERA_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED = 5,
+
+ /**
+ * <p>AF finished a passive scan without finding focus,
+ * and may restart scanning at any time.</p>
+ * <p>Only used by CONTINUOUS_* AF modes. This is a transient state, the camera
+ * device may skip reporting this state in capture result.</p>
+ * <p>LEGACY camera devices do not support this state. When a passive
+ * scan has finished, it will always go to PASSIVE_FOCUSED.</p>
+ */
+ ACAMERA_CONTROL_AF_STATE_PASSIVE_UNFOCUSED = 6,
+
+} acamera_metadata_enum_android_control_af_state_t;
+
+// ACAMERA_CONTROL_AWB_STATE
+typedef enum acamera_metadata_enum_acamera_control_awb_state {
+ /**
+ * <p>AWB is not in auto mode, or has not yet started metering.</p>
+ * <p>When a camera device is opened, it starts in this
+ * state. This is a transient state, the camera device may
+ * skip reporting this state in capture
+ * result.</p>
+ */
+ ACAMERA_CONTROL_AWB_STATE_INACTIVE = 0,
+
+ /**
+ * <p>AWB doesn't yet have a good set of control
+ * values for the current scene.</p>
+ * <p>This is a transient state, the camera device
+ * may skip reporting this state in capture result.</p>
+ */
+ ACAMERA_CONTROL_AWB_STATE_SEARCHING = 1,
+
+ /**
+ * <p>AWB has a good set of control values for the
+ * current scene.</p>
+ */
+ ACAMERA_CONTROL_AWB_STATE_CONVERGED = 2,
+
+ /**
+ * <p>AWB has been locked.</p>
+ */
+ ACAMERA_CONTROL_AWB_STATE_LOCKED = 3,
+
+} acamera_metadata_enum_android_control_awb_state_t;
+
+// ACAMERA_CONTROL_AE_LOCK_AVAILABLE
+typedef enum acamera_metadata_enum_acamera_control_ae_lock_available {
+ ACAMERA_CONTROL_AE_LOCK_AVAILABLE_FALSE = 0,
+
+ ACAMERA_CONTROL_AE_LOCK_AVAILABLE_TRUE = 1,
+
+} acamera_metadata_enum_android_control_ae_lock_available_t;
+
+// ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
+typedef enum acamera_metadata_enum_acamera_control_awb_lock_available {
+ ACAMERA_CONTROL_AWB_LOCK_AVAILABLE_FALSE = 0,
+
+ ACAMERA_CONTROL_AWB_LOCK_AVAILABLE_TRUE = 1,
+
+} acamera_metadata_enum_android_control_awb_lock_available_t;
+
+// ACAMERA_CONTROL_ENABLE_ZSL
+typedef enum acamera_metadata_enum_acamera_control_enable_zsl {
+ /**
+ * <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE must be captured
+ * after previous requests.</p>
+ *
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ */
+ ACAMERA_CONTROL_ENABLE_ZSL_FALSE = 0,
+
+ /**
+ * <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE may or may not be
+ * captured before previous requests.</p>
+ *
+ * @see ACAMERA_CONTROL_CAPTURE_INTENT
+ */
+ ACAMERA_CONTROL_ENABLE_ZSL_TRUE = 1,
+
+} acamera_metadata_enum_android_control_enable_zsl_t;
+
+
+
+// ACAMERA_EDGE_MODE
+typedef enum acamera_metadata_enum_acamera_edge_mode {
+ /**
+ * <p>No edge enhancement is applied.</p>
+ */
+ ACAMERA_EDGE_MODE_OFF = 0,
+
+ /**
+ * <p>Apply edge enhancement at a quality level that does not slow down frame rate
+ * relative to sensor output. It may be the same as OFF if edge enhancement will
+ * slow down frame rate relative to sensor.</p>
+ */
+ ACAMERA_EDGE_MODE_FAST = 1,
+
+ /**
+ * <p>Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate.</p>
+ */
+ ACAMERA_EDGE_MODE_HIGH_QUALITY = 2,
+
+ /**
+ * <p>Edge enhancement is applied at different levels for different output streams,
+ * based on resolution. Streams at maximum recording resolution (see {@link
+ * ACameraDevice_createCaptureSession}) or below have
+ * edge enhancement applied, while higher-resolution streams have no edge enhancement
+ * applied. The level of edge enhancement for low-resolution streams is tuned so that
+ * frame rate is not impacted, and the quality is equal to or better than FAST (since it
+ * is only applied to lower-resolution outputs, quality may improve from FAST).</p>
+ * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
+ * with YUV or PRIVATE reprocessing, where the application continuously captures
+ * high-resolution intermediate buffers into a circular buffer, from which a final image is
+ * produced via reprocessing when a user takes a picture. For such a use case, the
+ * high-resolution buffers must not have edge enhancement applied to maximize efficiency of
+ * preview and to avoid double-applying enhancement when reprocessed, while low-resolution
+ * buffers (used for recording or preview, generally) need edge enhancement applied for
+ * reasonable preview quality.</p>
+ * <p>This mode is guaranteed to be supported by devices that support either the
+ * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
+ * (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES lists either of those capabilities) and it will
+ * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ */
+ ACAMERA_EDGE_MODE_ZERO_SHUTTER_LAG = 3,
+
+} acamera_metadata_enum_android_edge_mode_t;
+
+
+// ACAMERA_FLASH_MODE
+typedef enum acamera_metadata_enum_acamera_flash_mode {
+ /**
+ * <p>Do not fire the flash for this capture.</p>
+ */
+ ACAMERA_FLASH_MODE_OFF = 0,
+
+ /**
+ * <p>If the flash is available and charged, fire flash
+ * for this capture.</p>
+ */
+ ACAMERA_FLASH_MODE_SINGLE = 1,
+
+ /**
+ * <p>Transition flash to continuously on.</p>
+ */
+ ACAMERA_FLASH_MODE_TORCH = 2,
+
+} acamera_metadata_enum_android_flash_mode_t;
+
+// ACAMERA_FLASH_STATE
+typedef enum acamera_metadata_enum_acamera_flash_state {
+ /**
+ * <p>No flash on camera.</p>
+ */
+ ACAMERA_FLASH_STATE_UNAVAILABLE = 0,
+
+ /**
+ * <p>Flash is charging and cannot be fired.</p>
+ */
+ ACAMERA_FLASH_STATE_CHARGING = 1,
+
+ /**
+ * <p>Flash is ready to fire.</p>
+ */
+ ACAMERA_FLASH_STATE_READY = 2,
+
+ /**
+ * <p>Flash fired for this capture.</p>
+ */
+ ACAMERA_FLASH_STATE_FIRED = 3,
+
+ /**
+ * <p>Flash partially illuminated this frame.</p>
+ * <p>This is usually due to the next or previous frame having
+ * the flash fire, and the flash spilling into this capture
+ * due to hardware limitations.</p>
+ */
+ ACAMERA_FLASH_STATE_PARTIAL = 4,
+
+} acamera_metadata_enum_android_flash_state_t;
+
+
+// ACAMERA_FLASH_INFO_AVAILABLE
+typedef enum acamera_metadata_enum_acamera_flash_info_available {
+ ACAMERA_FLASH_INFO_AVAILABLE_FALSE = 0,
+
+ ACAMERA_FLASH_INFO_AVAILABLE_TRUE = 1,
+
+} acamera_metadata_enum_android_flash_info_available_t;
+
+
+// ACAMERA_HOT_PIXEL_MODE
+typedef enum acamera_metadata_enum_acamera_hot_pixel_mode {
+ /**
+ * <p>No hot pixel correction is applied.</p>
+ * <p>The frame rate must not be reduced relative to sensor raw output
+ * for this option.</p>
+ * <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
+ *
+ * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+ */
+ ACAMERA_HOT_PIXEL_MODE_OFF = 0,
+
+ /**
+ * <p>Hot pixel correction is applied, without reducing frame
+ * rate relative to sensor raw output.</p>
+ * <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
+ *
+ * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+ */
+ ACAMERA_HOT_PIXEL_MODE_FAST = 1,
+
+ /**
+ * <p>High-quality hot pixel correction is applied, at a cost
+ * of possibly reduced frame rate relative to sensor raw output.</p>
+ * <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
+ *
+ * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+ */
+ ACAMERA_HOT_PIXEL_MODE_HIGH_QUALITY = 2,
+
+} acamera_metadata_enum_android_hot_pixel_mode_t;
+
+
+
+// ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
+typedef enum acamera_metadata_enum_acamera_lens_optical_stabilization_mode {
+ /**
+ * <p>Optical stabilization is unavailable.</p>
+ */
+ ACAMERA_LENS_OPTICAL_STABILIZATION_MODE_OFF = 0,
+
+ /**
+ * <p>Optical stabilization is enabled.</p>
+ */
+ ACAMERA_LENS_OPTICAL_STABILIZATION_MODE_ON = 1,
+
+} acamera_metadata_enum_android_lens_optical_stabilization_mode_t;
+
+// ACAMERA_LENS_FACING
+typedef enum acamera_metadata_enum_acamera_lens_facing {
+ /**
+ * <p>The camera device faces the same direction as the device's screen.</p>
+ */
+ ACAMERA_LENS_FACING_FRONT = 0,
+
+ /**
+ * <p>The camera device faces the opposite direction as the device's screen.</p>
+ */
+ ACAMERA_LENS_FACING_BACK = 1,
+
+ /**
+ * <p>The camera device is an external camera, and has no fixed facing relative to the
+ * device's screen.</p>
+ */
+ ACAMERA_LENS_FACING_EXTERNAL = 2,
+
+} acamera_metadata_enum_android_lens_facing_t;
+
+// ACAMERA_LENS_STATE
+typedef enum acamera_metadata_enum_acamera_lens_state {
+ /**
+ * <p>The lens parameters (ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
+ * ACAMERA_LENS_FILTER_DENSITY and ACAMERA_LENS_APERTURE) are not changing.</p>
+ *
+ * @see ACAMERA_LENS_APERTURE
+ * @see ACAMERA_LENS_FILTER_DENSITY
+ * @see ACAMERA_LENS_FOCAL_LENGTH
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ */
+ ACAMERA_LENS_STATE_STATIONARY = 0,
+
+ /**
+ * <p>One or several of the lens parameters
+ * (ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
+ * ACAMERA_LENS_FILTER_DENSITY or ACAMERA_LENS_APERTURE) is
+ * currently changing.</p>
+ *
+ * @see ACAMERA_LENS_APERTURE
+ * @see ACAMERA_LENS_FILTER_DENSITY
+ * @see ACAMERA_LENS_FOCAL_LENGTH
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ */
+ ACAMERA_LENS_STATE_MOVING = 1,
+
+} acamera_metadata_enum_android_lens_state_t;
+
+
+// ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
+typedef enum acamera_metadata_enum_acamera_lens_info_focus_distance_calibration {
+ /**
+ * <p>The lens focus distance is not accurate, and the units used for
+ * ACAMERA_LENS_FOCUS_DISTANCE do not correspond to any physical units.</p>
+ * <p>Setting the lens to the same focus distance on separate occasions may
+ * result in a different real focus distance, depending on factors such
+ * as the orientation of the device, the age of the focusing mechanism,
+ * and the device temperature. The focus distance value will still be
+ * in the range of <code>[0, ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE]</code>, where 0
+ * represents the farthest focus.</p>
+ *
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+ */
+ ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED = 0,
+
+ /**
+ * <p>The lens focus distance is measured in diopters.</p>
+ * <p>However, setting the lens to the same focus distance
+ * on separate occasions may result in a different real
+ * focus distance, depending on factors such as the
+ * orientation of the device, the age of the focusing
+ * mechanism, and the device temperature.</p>
+ */
+ ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE = 1,
+
+ /**
+ * <p>The lens focus distance is measured in diopters, and
+ * is calibrated.</p>
+ * <p>The lens mechanism is calibrated so that setting the
+ * same focus distance is repeatable on multiple
+ * occasions with good accuracy, and the focus distance
+ * corresponds to the real physical distance to the plane
+ * of best focus.</p>
+ */
+ ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED = 2,
+
+} acamera_metadata_enum_android_lens_info_focus_distance_calibration_t;
+
+
+// ACAMERA_NOISE_REDUCTION_MODE
+typedef enum acamera_metadata_enum_acamera_noise_reduction_mode {
+ /**
+ * <p>No noise reduction is applied.</p>
+ */
+ ACAMERA_NOISE_REDUCTION_MODE_OFF = 0,
+
+ /**
+ * <p>Noise reduction is applied without reducing frame rate relative to sensor
+ * output. It may be the same as OFF if noise reduction will reduce frame rate
+ * relative to sensor.</p>
+ */
+ ACAMERA_NOISE_REDUCTION_MODE_FAST = 1,
+
+ /**
+ * <p>High-quality noise reduction is applied, at the cost of possibly reduced frame
+ * rate relative to sensor output.</p>
+ */
+ ACAMERA_NOISE_REDUCTION_MODE_HIGH_QUALITY = 2,
+
+ /**
+ * <p>MINIMAL noise reduction is applied without reducing frame rate relative to
+ * sensor output. </p>
+ */
+ ACAMERA_NOISE_REDUCTION_MODE_MINIMAL = 3,
+
+ /**
+ * <p>Noise reduction is applied at different levels for different output streams,
+ * based on resolution. Streams at maximum recording resolution (see {@link
+ * ACameraDevice_createCaptureSession}) or below have noise
+ * reduction applied, while higher-resolution streams have MINIMAL (if supported) or no
+ * noise reduction applied (if MINIMAL is not supported.) The degree of noise reduction
+ * for low-resolution streams is tuned so that frame rate is not impacted, and the quality
+ * is equal to or better than FAST (since it is only applied to lower-resolution outputs,
+ * quality may improve from FAST).</p>
+ * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
+ * with YUV or PRIVATE reprocessing, where the application continuously captures
+ * high-resolution intermediate buffers into a circular buffer, from which a final image is
+ * produced via reprocessing when a user takes a picture. For such a use case, the
+ * high-resolution buffers must not have noise reduction applied to maximize efficiency of
+ * preview and to avoid over-applying noise filtering when reprocessing, while
+ * low-resolution buffers (used for recording or preview, generally) need noise reduction
+ * applied for reasonable preview quality.</p>
+ * <p>This mode is guaranteed to be supported by devices that support either the
+ * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
+ * (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES lists either of those capabilities) and it will
+ * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ */
+ ACAMERA_NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG = 4,
+
+} acamera_metadata_enum_android_noise_reduction_mode_t;
+
+
+
+// ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+typedef enum acamera_metadata_enum_acamera_request_available_capabilities {
+ /**
+ * <p>The minimal set of capabilities that every camera
+ * device (regardless of ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL)
+ * supports.</p>
+ * <p>This capability is listed by all normal devices, and
+ * indicates that the camera device has a feature set
+ * that's comparable to the baseline requirements for the
+ * older android.hardware.Camera API.</p>
+ * <p>Devices with the DEPTH_OUTPUT capability might not list this
+ * capability, indicating that they support only depth measurement,
+ * not standard color output.</p>
+ *
+ * @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE = 0,
+
+ /**
+ * <p>The camera device can be manually controlled (3A algorithms such
+ * as auto-exposure, and auto-focus can be bypassed).
+ * The camera device supports basic manual control of the sensor image
+ * acquisition related stages. This means the following controls are
+ * guaranteed to be supported:</p>
+ * <ul>
+ * <li>Manual frame duration control<ul>
+ * <li>ACAMERA_SENSOR_FRAME_DURATION</li>
+ * <li>ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION</li>
+ * </ul>
+ * </li>
+ * <li>Manual exposure control<ul>
+ * <li>ACAMERA_SENSOR_EXPOSURE_TIME</li>
+ * <li>ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE</li>
+ * </ul>
+ * </li>
+ * <li>Manual sensitivity control<ul>
+ * <li>ACAMERA_SENSOR_SENSITIVITY</li>
+ * <li>ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE</li>
+ * </ul>
+ * </li>
+ * <li>Manual lens control (if the lens is adjustable)<ul>
+ * <li>ACAMERA_LENS_*</li>
+ * </ul>
+ * </li>
+ * <li>Manual flash control (if a flash unit is present)<ul>
+ * <li>ACAMERA_FLASH_*</li>
+ * </ul>
+ * </li>
+ * <li>Manual black level locking<ul>
+ * <li>ACAMERA_BLACK_LEVEL_LOCK</li>
+ * </ul>
+ * </li>
+ * <li>Auto exposure lock<ul>
+ * <li>ACAMERA_CONTROL_AE_LOCK</li>
+ * </ul>
+ * </li>
+ * </ul>
+ * <p>If any of the above 3A algorithms are enabled, then the camera
+ * device will accurately report the values applied by 3A in the
+ * result.</p>
+ * <p>A given camera device may also support additional manual sensor controls,
+ * but this capability only covers the above list of controls.</p>
+ * <p>If this is supported, android.scaler.streamConfigurationMap will
+ * additionally return a min frame duration that is greater than
+ * zero for each supported size-format combination.</p>
+ *
+ * @see ACAMERA_BLACK_LEVEL_LOCK
+ * @see ACAMERA_CONTROL_AE_LOCK
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_FRAME_DURATION
+ * @see ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE
+ * @see ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION
+ * @see ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR = 1,
+
+ /**
+ * <p>The camera device post-processing stages can be manually controlled.
+ * The camera device supports basic manual control of the image post-processing
+ * stages. This means the following controls are guaranteed to be supported:</p>
+ * <ul>
+ * <li>
+ * <p>Manual tonemap control</p>
+ * <ul>
+ * <li>android.tonemap.curve</li>
+ * <li>ACAMERA_TONEMAP_MODE</li>
+ * <li>ACAMERA_TONEMAP_MAX_CURVE_POINTS</li>
+ * <li>ACAMERA_TONEMAP_GAMMA</li>
+ * <li>ACAMERA_TONEMAP_PRESET_CURVE</li>
+ * </ul>
+ * </li>
+ * <li>
+ * <p>Manual white balance control</p>
+ * <ul>
+ * <li>ACAMERA_COLOR_CORRECTION_TRANSFORM</li>
+ * <li>ACAMERA_COLOR_CORRECTION_GAINS</li>
+ * </ul>
+ * </li>
+ * <li>Manual lens shading map control<ul>
+ * <li>ACAMERA_SHADING_MODE</li>
+ * <li>ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE</li>
+ * <li>ACAMERA_STATISTICS_LENS_SHADING_MAP</li>
+ * <li>ACAMERA_LENS_INFO_SHADING_MAP_SIZE</li>
+ * </ul>
+ * </li>
+ * <li>Manual aberration correction control (if aberration correction is supported)<ul>
+ * <li>ACAMERA_COLOR_CORRECTION_ABERRATION_MODE</li>
+ * <li>ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES</li>
+ * </ul>
+ * </li>
+ * <li>Auto white balance lock<ul>
+ * <li>ACAMERA_CONTROL_AWB_LOCK</li>
+ * </ul>
+ * </li>
+ * </ul>
+ * <p>If auto white balance is enabled, then the camera device
+ * will accurately report the values applied by AWB in the result.</p>
+ * <p>A given camera device may also support additional post-processing
+ * controls, but this capability only covers the above list of controls.</p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+ * @see ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
+ * @see ACAMERA_COLOR_CORRECTION_GAINS
+ * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+ * @see ACAMERA_CONTROL_AWB_LOCK
+ * @see ACAMERA_LENS_INFO_SHADING_MAP_SIZE
+ * @see ACAMERA_SHADING_MODE
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+ * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+ * @see ACAMERA_TONEMAP_GAMMA
+ * @see ACAMERA_TONEMAP_MAX_CURVE_POINTS
+ * @see ACAMERA_TONEMAP_MODE
+ * @see ACAMERA_TONEMAP_PRESET_CURVE
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING = 2,
+
+ /**
+ * <p>The camera device supports outputting RAW buffers and
+ * metadata for interpreting them.</p>
+ * <p>Devices supporting the RAW capability allow both for
+ * saving DNG files, and for direct application processing of
+ * raw sensor images.</p>
+ * <ul>
+ * <li>RAW_SENSOR is supported as an output format.</li>
+ * <li>The maximum available resolution for RAW_SENSOR streams
+ * will match either the value in
+ * ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE or
+ * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE.</li>
+ * <li>All DNG-related optional metadata entries are provided
+ * by the camera device.</li>
+ * </ul>
+ *
+ * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+ * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_RAW = 3,
+
+ /**
+ * <p>The camera device supports accurately reporting the sensor settings for many of
+ * the sensor controls while the built-in 3A algorithm is running. This allows
+ * reporting of sensor settings even when these settings cannot be manually changed.</p>
+ * <p>The values reported for the following controls are guaranteed to be available
+ * in the CaptureResult, including when 3A is enabled:</p>
+ * <ul>
+ * <li>Exposure control<ul>
+ * <li>ACAMERA_SENSOR_EXPOSURE_TIME</li>
+ * </ul>
+ * </li>
+ * <li>Sensitivity control<ul>
+ * <li>ACAMERA_SENSOR_SENSITIVITY</li>
+ * </ul>
+ * </li>
+ * <li>Lens controls (if the lens is adjustable)<ul>
+ * <li>ACAMERA_LENS_FOCUS_DISTANCE</li>
+ * <li>ACAMERA_LENS_APERTURE</li>
+ * </ul>
+ * </li>
+ * </ul>
+ * <p>This capability is a subset of the MANUAL_SENSOR control capability, and will
+ * always be included if the MANUAL_SENSOR capability is available.</p>
+ *
+ * @see ACAMERA_LENS_APERTURE
+ * @see ACAMERA_LENS_FOCUS_DISTANCE
+ * @see ACAMERA_SENSOR_EXPOSURE_TIME
+ * @see ACAMERA_SENSOR_SENSITIVITY
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS = 5,
+
+ /**
+ * <p>The camera device supports capturing high-resolution images at >= 20 frames per
+ * second, in at least the uncompressed YUV format, when post-processing settings are set
+ * to FAST. Additionally, maximum-resolution images can be captured at >= 10 frames
+ * per second. Here, 'high resolution' means at least 8 megapixels, or the maximum
+ * resolution of the device, whichever is smaller.</p>
+ * <p>More specifically, this means that at least one output {@link
+ * AIMAGE_FORMAT_YUV_420_888} size listed in
+ * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} is larger or equal to the
+ * 'high resolution' defined above, and can be captured at at least 20 fps.
+ * For the largest {@link AIMAGE_FORMAT_YUV_420_888} size listed in
+ * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}, camera device can capture this
+ * size for at least 10 frames per second.
+ * Also the ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES entry lists at least one FPS range
+ * where the minimum FPS is >= 1 / minimumFrameDuration for the largest YUV_420_888 size.</p>
+ * <p>If the device supports the {@link AIMAGE_FORMAT_RAW10}, {@link
+ * AIMAGE_FORMAT_RAW12}, then those can also be captured at the same rate
+ * as the maximum-size YUV_420_888 resolution is.</p>
+ * <p>In addition, the ACAMERA_SYNC_MAX_LATENCY field is guaranted to have a value between 0
+ * and 4, inclusive. ACAMERA_CONTROL_AE_LOCK_AVAILABLE and ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
+ * are also guaranteed to be <code>true</code> so burst capture with these two locks ON yields
+ * consistent image output.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
+ * @see ACAMERA_CONTROL_AE_LOCK_AVAILABLE
+ * @see ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
+ * @see ACAMERA_SYNC_MAX_LATENCY
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE = 6,
+
+ /**
+ * <p>The camera device can produce depth measurements from its field of view.</p>
+ * <p>This capability requires the camera device to support the following:</p>
+ * <ul>
+ * <li>{@link AIMAGE_FORMAT_DEPTH16} is supported as an output format.</li>
+ * <li>{@link AIMAGE_FORMAT_DEPTH_POINT_CLOUD} is optionally supported as an
+ * output format.</li>
+ * <li>This camera device, and all camera devices with the same ACAMERA_LENS_FACING,
+ * will list the following calibration entries in {@link ACameraMetadata} from both
+ * {@link ACameraManager_getCameraCharacteristics} and
+ * {@link ACameraCaptureSession_captureCallback_result}:<ul>
+ * <li>ACAMERA_LENS_POSE_TRANSLATION</li>
+ * <li>ACAMERA_LENS_POSE_ROTATION</li>
+ * <li>ACAMERA_LENS_INTRINSIC_CALIBRATION</li>
+ * <li>ACAMERA_LENS_RADIAL_DISTORTION</li>
+ * </ul>
+ * </li>
+ * <li>The ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE entry is listed by this device.</li>
+ * <li>A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support
+ * normal YUV_420_888, JPEG, and PRIV-format outputs. It only has to support the DEPTH16
+ * format.</li>
+ * </ul>
+ * <p>Generally, depth output operates at a slower frame rate than standard color capture,
+ * so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that
+ * should be accounted for (see
+ * {@link ACAMERA_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS}).
+ * On a device that supports both depth and color-based output, to enable smooth preview,
+ * using a repeating burst is recommended, where a depth-output target is only included
+ * once every N frames, where N is the ratio between preview output rate and depth output
+ * rate, including depth stall time.</p>
+ *
+ * @see ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE
+ * @see ACAMERA_LENS_FACING
+ * @see ACAMERA_LENS_INTRINSIC_CALIBRATION
+ * @see ACAMERA_LENS_POSE_ROTATION
+ * @see ACAMERA_LENS_POSE_TRANSLATION
+ * @see ACAMERA_LENS_RADIAL_DISTORTION
+ */
+ ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT = 8,
+
+} acamera_metadata_enum_android_request_available_capabilities_t;
+
+
+// ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+typedef enum acamera_metadata_enum_acamera_scaler_available_stream_configurations {
+ ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT = 0,
+
+ ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT = 1,
+
+} acamera_metadata_enum_android_scaler_available_stream_configurations_t;
+
+// ACAMERA_SCALER_CROPPING_TYPE
+typedef enum acamera_metadata_enum_acamera_scaler_cropping_type {
+ /**
+ * <p>The camera device only supports centered crop regions.</p>
+ */
+ ACAMERA_SCALER_CROPPING_TYPE_CENTER_ONLY = 0,
+
+ /**
+ * <p>The camera device supports arbitrarily chosen crop regions.</p>
+ */
+ ACAMERA_SCALER_CROPPING_TYPE_FREEFORM = 1,
+
+} acamera_metadata_enum_android_scaler_cropping_type_t;
+
+
+// ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+typedef enum acamera_metadata_enum_acamera_sensor_reference_illuminant1 {
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT = 1,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT = 2,
+
+ /**
+ * <p>Incandescent light</p>
+ */
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN = 3,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FLASH = 4,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER = 9,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER = 10,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_SHADE = 11,
+
+ /**
+ * <p>D 5700 - 7100K</p>
+ */
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT = 12,
+
+ /**
+ * <p>N 4600 - 5400K</p>
+ */
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT = 13,
+
+ /**
+ * <p>W 3900 - 4500K</p>
+ */
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT = 14,
+
+ /**
+ * <p>WW 3200 - 3700K</p>
+ */
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT = 15,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A = 17,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B = 18,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C = 19,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D55 = 20,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D65 = 21,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D75 = 22,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D50 = 23,
+
+ ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN = 24,
+
+} acamera_metadata_enum_android_sensor_reference_illuminant1_t;
+
+// ACAMERA_SENSOR_TEST_PATTERN_MODE
+typedef enum acamera_metadata_enum_acamera_sensor_test_pattern_mode {
+ /**
+ * <p>No test pattern mode is used, and the camera
+ * device returns captures from the image sensor.</p>
+ * <p>This is the default if the key is not set.</p>
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_MODE_OFF = 0,
+
+ /**
+ * <p>Each pixel in <code>[R, G_even, G_odd, B]</code> is replaced by its
+ * respective color channel provided in
+ * ACAMERA_SENSOR_TEST_PATTERN_DATA.</p>
+ * <p>For example:</p>
+ * <pre><code>android.testPatternData = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0]
+ * </code></pre>
+ * <p>All green pixels are 100% green. All red/blue pixels are black.</p>
+ * <pre><code>android.testPatternData = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0]
+ * </code></pre>
+ * <p>All red pixels are 100% red. Only the odd green pixels
+ * are 100% green. All blue pixels are 100% black.</p>
+ *
+ * @see ACAMERA_SENSOR_TEST_PATTERN_DATA
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_MODE_SOLID_COLOR = 1,
+
+ /**
+ * <p>All pixel data is replaced with an 8-bar color pattern.</p>
+ * <p>The vertical bars (left-to-right) are as follows:</p>
+ * <ul>
+ * <li>100% white</li>
+ * <li>yellow</li>
+ * <li>cyan</li>
+ * <li>green</li>
+ * <li>magenta</li>
+ * <li>red</li>
+ * <li>blue</li>
+ * <li>black</li>
+ * </ul>
+ * <p>In general the image would look like the following:</p>
+ * <pre><code>W Y C G M R B K
+ * W Y C G M R B K
+ * W Y C G M R B K
+ * W Y C G M R B K
+ * W Y C G M R B K
+ * . . . . . . . .
+ * . . . . . . . .
+ * . . . . . . . .
+ *
+ * (B = Blue, K = Black)
+ * </code></pre>
+ * <p>Each bar should take up 1/8 of the sensor pixel array width.
+ * When this is not possible, the bar size should be rounded
+ * down to the nearest integer and the pattern can repeat
+ * on the right side.</p>
+ * <p>Each bar's height must always take up the full sensor
+ * pixel array height.</p>
+ * <p>Each pixel in this test pattern must be set to either
+ * 0% intensity or 100% intensity.</p>
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_MODE_COLOR_BARS = 2,
+
+ /**
+ * <p>The test pattern is similar to COLOR_BARS, except that
+ * each bar should start at its specified color at the top,
+ * and fade to gray at the bottom.</p>
+ * <p>Furthermore each bar is further subdivided into a left and
+ * right half. The left half should have a smooth gradient,
+ * and the right half should have a quantized gradient.</p>
+ * <p>In particular, the right half's should consist of blocks of the
+ * same color for 1/16th active sensor pixel array width.</p>
+ * <p>The least significant bits in the quantized gradient should
+ * be copied from the most significant bits of the smooth gradient.</p>
+ * <p>The height of each bar should always be a multiple of 128.
+ * When this is not the case, the pattern should repeat at the bottom
+ * of the image.</p>
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY = 3,
+
+ /**
+ * <p>All pixel data is replaced by a pseudo-random sequence
+ * generated from a PN9 512-bit sequence (typically implemented
+ * in hardware with a linear feedback shift register).</p>
+ * <p>The generator should be reset at the beginning of each frame,
+ * and thus each subsequent raw frame with this test pattern should
+ * be exactly the same as the last.</p>
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_MODE_PN9 = 4,
+
+ /**
+ * <p>The first custom test pattern. All custom patterns that are
+ * available only on this camera device are at least this numeric
+ * value.</p>
+ * <p>All of the custom test patterns will be static
+ * (that is the raw image must not vary from frame to frame).</p>
+ */
+ ACAMERA_SENSOR_TEST_PATTERN_MODE_CUSTOM1 = 256,
+
+} acamera_metadata_enum_android_sensor_test_pattern_mode_t;
+
+
+// ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+typedef enum acamera_metadata_enum_acamera_sensor_info_color_filter_arrangement {
+ ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0,
+
+ ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1,
+
+ ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2,
+
+ ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3,
+
+ /**
+ * <p>Sensor is not Bayer; output has 3 16-bit
+ * values for each pixel, instead of just 1 16-bit value
+ * per pixel.</p>
+ */
+ ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4,
+
+} acamera_metadata_enum_android_sensor_info_color_filter_arrangement_t;
+
+// ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
+typedef enum acamera_metadata_enum_acamera_sensor_info_timestamp_source {
+ /**
+ * <p>Timestamps from ACAMERA_SENSOR_TIMESTAMP are in nanoseconds and monotonic,
+ * but can not be compared to timestamps from other subsystems
+ * (e.g. accelerometer, gyro etc.), or other instances of the same or different
+ * camera devices in the same system. Timestamps between streams and results for
+ * a single camera instance are comparable, and the timestamps for all buffers
+ * and the result metadata generated by a single capture are identical.</p>
+ *
+ * @see ACAMERA_SENSOR_TIMESTAMP
+ */
+ ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN = 0,
+
+ /**
+ * <p>Timestamps from ACAMERA_SENSOR_TIMESTAMP are in the same timebase as
+ * <a href="https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos">elapsedRealtimeNanos</a>
+ * (or CLOCK_BOOTTIME), and they can be compared to other timestamps using that base.</p>
+ *
+ * @see ACAMERA_SENSOR_TIMESTAMP
+ */
+ ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME = 1,
+
+} acamera_metadata_enum_android_sensor_info_timestamp_source_t;
+
+// ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
+typedef enum acamera_metadata_enum_acamera_sensor_info_lens_shading_applied {
+ ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED_FALSE = 0,
+
+ ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED_TRUE = 1,
+
+} acamera_metadata_enum_android_sensor_info_lens_shading_applied_t;
+
+
+// ACAMERA_SHADING_MODE
+typedef enum acamera_metadata_enum_acamera_shading_mode {
+ /**
+ * <p>No lens shading correction is applied.</p>
+ */
+ ACAMERA_SHADING_MODE_OFF = 0,
+
+ /**
+ * <p>Apply lens shading corrections, without slowing
+ * frame rate relative to sensor raw output</p>
+ */
+ ACAMERA_SHADING_MODE_FAST = 1,
+
+ /**
+ * <p>Apply high-quality lens shading correction, at the
+ * cost of possibly reduced frame rate.</p>
+ */
+ ACAMERA_SHADING_MODE_HIGH_QUALITY = 2,
+
+} acamera_metadata_enum_android_shading_mode_t;
+
+
+// ACAMERA_STATISTICS_FACE_DETECT_MODE
+typedef enum acamera_metadata_enum_acamera_statistics_face_detect_mode {
+ /**
+ * <p>Do not include face detection statistics in capture
+ * results.</p>
+ */
+ ACAMERA_STATISTICS_FACE_DETECT_MODE_OFF = 0,
+
+ /**
+ * <p>Return face rectangle and confidence values only.</p>
+ */
+ ACAMERA_STATISTICS_FACE_DETECT_MODE_SIMPLE = 1,
+
+ /**
+ * <p>Return all face
+ * metadata.</p>
+ * <p>In this mode, face rectangles, scores, landmarks, and face IDs are all valid.</p>
+ */
+ ACAMERA_STATISTICS_FACE_DETECT_MODE_FULL = 2,
+
+} acamera_metadata_enum_android_statistics_face_detect_mode_t;
+
+// ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE
+typedef enum acamera_metadata_enum_acamera_statistics_hot_pixel_map_mode {
+ /**
+ * <p>Hot pixel map production is disabled.</p>
+ */
+ ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE_OFF = 0,
+
+ /**
+ * <p>Hot pixel map production is enabled.</p>
+ */
+ ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE_ON = 1,
+
+} acamera_metadata_enum_android_statistics_hot_pixel_map_mode_t;
+
+// ACAMERA_STATISTICS_SCENE_FLICKER
+typedef enum acamera_metadata_enum_acamera_statistics_scene_flicker {
+ /**
+ * <p>The camera device does not detect any flickering illumination
+ * in the current scene.</p>
+ */
+ ACAMERA_STATISTICS_SCENE_FLICKER_NONE = 0,
+
+ /**
+ * <p>The camera device detects illumination flickering at 50Hz
+ * in the current scene.</p>
+ */
+ ACAMERA_STATISTICS_SCENE_FLICKER_50HZ = 1,
+
+ /**
+ * <p>The camera device detects illumination flickering at 60Hz
+ * in the current scene.</p>
+ */
+ ACAMERA_STATISTICS_SCENE_FLICKER_60HZ = 2,
+
+} acamera_metadata_enum_android_statistics_scene_flicker_t;
+
+// ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+typedef enum acamera_metadata_enum_acamera_statistics_lens_shading_map_mode {
+ /**
+ * <p>Do not include a lens shading map in the capture result.</p>
+ */
+ ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE_OFF = 0,
+
+ /**
+ * <p>Include a lens shading map in the capture result.</p>
+ */
+ ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE_ON = 1,
+
+} acamera_metadata_enum_android_statistics_lens_shading_map_mode_t;
+
+
+
+// ACAMERA_TONEMAP_MODE
+typedef enum acamera_metadata_enum_acamera_tonemap_mode {
+ /**
+ * <p>Use the tone mapping curve specified in
+ * the ACAMERA_TONEMAPCURVE_* entries.</p>
+ * <p>All color enhancement and tonemapping must be disabled, except
+ * for applying the tonemapping curve specified by
+ * android.tonemap.curve.</p>
+ * <p>Must not slow down frame rate relative to raw
+ * sensor output.</p>
+ */
+ ACAMERA_TONEMAP_MODE_CONTRAST_CURVE = 0,
+
+ /**
+ * <p>Advanced gamma mapping and color enhancement may be applied, without
+ * reducing frame rate compared to raw sensor output.</p>
+ */
+ ACAMERA_TONEMAP_MODE_FAST = 1,
+
+ /**
+ * <p>High-quality gamma mapping and color enhancement will be applied, at
+ * the cost of possibly reduced frame rate compared to raw sensor output.</p>
+ */
+ ACAMERA_TONEMAP_MODE_HIGH_QUALITY = 2,
+
+ /**
+ * <p>Use the gamma value specified in ACAMERA_TONEMAP_GAMMA to peform
+ * tonemapping.</p>
+ * <p>All color enhancement and tonemapping must be disabled, except
+ * for applying the tonemapping curve specified by ACAMERA_TONEMAP_GAMMA.</p>
+ * <p>Must not slow down frame rate relative to raw sensor output.</p>
+ *
+ * @see ACAMERA_TONEMAP_GAMMA
+ */
+ ACAMERA_TONEMAP_MODE_GAMMA_VALUE = 3,
+
+ /**
+ * <p>Use the preset tonemapping curve specified in
+ * ACAMERA_TONEMAP_PRESET_CURVE to peform tonemapping.</p>
+ * <p>All color enhancement and tonemapping must be disabled, except
+ * for applying the tonemapping curve specified by
+ * ACAMERA_TONEMAP_PRESET_CURVE.</p>
+ * <p>Must not slow down frame rate relative to raw sensor output.</p>
+ *
+ * @see ACAMERA_TONEMAP_PRESET_CURVE
+ */
+ ACAMERA_TONEMAP_MODE_PRESET_CURVE = 4,
+
+} acamera_metadata_enum_android_tonemap_mode_t;
+
+// ACAMERA_TONEMAP_PRESET_CURVE
+typedef enum acamera_metadata_enum_acamera_tonemap_preset_curve {
+ /**
+ * <p>Tonemapping curve is defined by sRGB</p>
+ */
+ ACAMERA_TONEMAP_PRESET_CURVE_SRGB = 0,
+
+ /**
+ * <p>Tonemapping curve is defined by ITU-R BT.709</p>
+ */
+ ACAMERA_TONEMAP_PRESET_CURVE_REC709 = 1,
+
+} acamera_metadata_enum_android_tonemap_preset_curve_t;
+
+
+
+// ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+typedef enum acamera_metadata_enum_acamera_info_supported_hardware_level {
+ /**
+ * <p>This camera device does not have enough capabilities to qualify as a <code>FULL</code> device or
+ * better.</p>
+ * <p>Only the stream configurations listed in the <code>LEGACY</code> and <code>LIMITED</code> tables in the
+ * {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported.</p>
+ * <p>All <code>LIMITED</code> devices support the <code>BACKWARDS_COMPATIBLE</code> capability, indicating basic
+ * support for color image capture. The only exception is that the device may
+ * alternatively support only the <code>DEPTH_OUTPUT</code> capability, if it can only output depth
+ * measurements and not color images.</p>
+ * <p><code>LIMITED</code> devices and above require the use of ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * to lock exposure metering (and calculate flash power, for cameras with flash) before
+ * capturing a high-quality still image.</p>
+ * <p>A <code>LIMITED</code> device that only lists the <code>BACKWARDS_COMPATIBLE</code> capability is only
+ * required to support full-automatic operation and post-processing (<code>OFF</code> is not
+ * supported for ACAMERA_CONTROL_AE_MODE, ACAMERA_CONTROL_AF_MODE, or
+ * ACAMERA_CONTROL_AWB_MODE)</p>
+ * <p>Additional capabilities may optionally be supported by a <code>LIMITED</code>-level device, and
+ * can be checked for in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_MODE
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_CONTROL_AF_MODE
+ * @see ACAMERA_CONTROL_AWB_MODE
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ */
+ ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0,
+
+ /**
+ * <p>This camera device is capable of supporting advanced imaging applications.</p>
+ * <p>The stream configurations listed in the <code>FULL</code>, <code>LEGACY</code> and <code>LIMITED</code> tables in the
+ * {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported.</p>
+ * <p>A <code>FULL</code> device will support below capabilities:</p>
+ * <ul>
+ * <li><code>BURST_CAPTURE</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+ * <code>BURST_CAPTURE</code>)</li>
+ * <li>Per frame control (ACAMERA_SYNC_MAX_LATENCY <code>==</code> PER_FRAME_CONTROL)</li>
+ * <li>Manual sensor control (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains <code>MANUAL_SENSOR</code>)</li>
+ * <li>Manual post-processing control (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+ * <code>MANUAL_POST_PROCESSING</code>)</li>
+ * <li>The required exposure time range defined in ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE</li>
+ * <li>The required maxFrameDuration defined in ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION</li>
+ * </ul>
+ * <p>Note:
+ * Pre-API level 23, FULL devices also supported arbitrary cropping region
+ * (ACAMERA_SCALER_CROPPING_TYPE <code>== FREEFORM</code>); this requirement was relaxed in API level
+ * 23, and <code>FULL</code> devices may only support <code>CENTERED</code> cropping.</p>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ * @see ACAMERA_SCALER_CROPPING_TYPE
+ * @see ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE
+ * @see ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION
+ * @see ACAMERA_SYNC_MAX_LATENCY
+ */
+ ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1,
+
+ /**
+ * <p>This camera device is running in backward compatibility mode.</p>
+ * <p>Only the stream configurations listed in the <code>LEGACY</code> table in the {@link
+ * ACameraDevice_createCaptureSession} documentation are supported.</p>
+ * <p>A <code>LEGACY</code> device does not support per-frame control, manual sensor control, manual
+ * post-processing, arbitrary cropping regions, and has relaxed performance constraints.
+ * No additional capabilities beyond <code>BACKWARD_COMPATIBLE</code> will ever be listed by a
+ * <code>LEGACY</code> device in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+ * <p>In addition, the ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is not functional on <code>LEGACY</code>
+ * devices. Instead, every request that includes a JPEG-format output target is treated
+ * as triggering a still capture, internally executing a precapture trigger. This may
+ * fire the flash for flash power metering during precapture, and then fire the flash
+ * for the final capture, if a flash is available on the device and the AE mode is set to
+ * enable the flash.</p>
+ *
+ * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ */
+ ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2,
+
+ /**
+ * <p>This camera device is capable of YUV reprocessing and RAW data capture, in addition to
+ * FULL-level capabilities.</p>
+ * <p>The stream configurations listed in the <code>LEVEL_3</code>, <code>RAW</code>, <code>FULL</code>, <code>LEGACY</code> and
+ * <code>LIMITED</code> tables in the {@link
+ * ACameraDevice_createCaptureSession}
+ * documentation are guaranteed to be supported.</p>
+ * <p>The following additional capabilities are guaranteed to be supported:</p>
+ * <ul>
+ * <li><code>YUV_REPROCESSING</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+ * <code>YUV_REPROCESSING</code>)</li>
+ * <li><code>RAW</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+ * <code>RAW</code>)</li>
+ * </ul>
+ *
+ * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+ */
+ ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_3 = 3,
+
+} acamera_metadata_enum_android_info_supported_hardware_level_t;
+
+
+// ACAMERA_BLACK_LEVEL_LOCK
+typedef enum acamera_metadata_enum_acamera_black_level_lock {
+ ACAMERA_BLACK_LEVEL_LOCK_OFF = 0,
+
+ ACAMERA_BLACK_LEVEL_LOCK_ON = 1,
+
+} acamera_metadata_enum_android_black_level_lock_t;
+
+
+// ACAMERA_SYNC_FRAME_NUMBER
+typedef enum acamera_metadata_enum_acamera_sync_frame_number {
+ /**
+ * <p>The current result is not yet fully synchronized to any request.</p>
+ * <p>Synchronization is in progress, and reading metadata from this
+ * result may include a mix of data that have taken effect since the
+ * last synchronization time.</p>
+ * <p>In some future result, within ACAMERA_SYNC_MAX_LATENCY frames,
+ * this value will update to the actual frame number frame number
+ * the result is guaranteed to be synchronized to (as long as the
+ * request settings remain constant).</p>
+ *
+ * @see ACAMERA_SYNC_MAX_LATENCY
+ */
+ ACAMERA_SYNC_FRAME_NUMBER_CONVERGING = -1,
+
+ /**
+ * <p>The current result's synchronization status is unknown.</p>
+ * <p>The result may have already converged, or it may be in
+ * progress. Reading from this result may include some mix
+ * of settings from past requests.</p>
+ * <p>After a settings change, the new settings will eventually all
+ * take effect for the output buffers and results. However, this
+ * value will not change when that happens. Altering settings
+ * rapidly may provide outcomes using mixes of settings from recent
+ * requests.</p>
+ * <p>This value is intended primarily for backwards compatibility with
+ * the older camera implementations (for android.hardware.Camera).</p>
+ */
+ ACAMERA_SYNC_FRAME_NUMBER_UNKNOWN = -2,
+
+} acamera_metadata_enum_android_sync_frame_number_t;
+
+// ACAMERA_SYNC_MAX_LATENCY
+typedef enum acamera_metadata_enum_acamera_sync_max_latency {
+ /**
+ * <p>Every frame has the requests immediately applied.</p>
+ * <p>Changing controls over multiple requests one after another will
+ * produce results that have those controls applied atomically
+ * each frame.</p>
+ * <p>All FULL capability devices will have this as their maxLatency.</p>
+ */
+ ACAMERA_SYNC_MAX_LATENCY_PER_FRAME_CONTROL = 0,
+
+ /**
+ * <p>Each new frame has some subset (potentially the entire set)
+ * of the past requests applied to the camera settings.</p>
+ * <p>By submitting a series of identical requests, the camera device
+ * will eventually have the camera settings applied, but it is
+ * unknown when that exact point will be.</p>
+ * <p>All LEGACY capability devices will have this as their maxLatency.</p>
+ */
+ ACAMERA_SYNC_MAX_LATENCY_UNKNOWN = -1,
+
+} acamera_metadata_enum_android_sync_max_latency_t;
+
+
+
+// ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS
+typedef enum acamera_metadata_enum_acamera_depth_available_depth_stream_configurations {
+ ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_OUTPUT = 0,
+
+ ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_INPUT = 1,
+
+} acamera_metadata_enum_android_depth_available_depth_stream_configurations_t;
+
+// ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE
+typedef enum acamera_metadata_enum_acamera_depth_depth_is_exclusive {
+ ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE_FALSE = 0,
+
+ ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE_TRUE = 1,
+
+} acamera_metadata_enum_android_depth_depth_is_exclusive_t;
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_METADATA_TAGS_H */
+
+/** @} */
diff --git a/camera/ndk/include/camera/NdkCaptureRequest.h b/camera/ndk/include/camera/NdkCaptureRequest.h
new file mode 100644
index 0000000..c62ba2c
--- /dev/null
+++ b/camera/ndk/include/camera/NdkCaptureRequest.h
@@ -0,0 +1,312 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCaptureRequest.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#include <sys/cdefs.h>
+
+#include <android/native_window.h>
+#include "NdkCameraError.h"
+#include "NdkCameraMetadata.h"
+
+#ifndef _NDK_CAPTURE_REQUEST_H
+#define _NDK_CAPTURE_REQUEST_H
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+// Container for output targets
+typedef struct ACameraOutputTargets ACameraOutputTargets;
+
+// Container for a single output target
+typedef struct ACameraOutputTarget ACameraOutputTarget;
+
+/**
+ * ACaptureRequest is an opaque type that contains settings and output targets needed to capture
+ * a single image from camera device.
+ *
+ * <p>ACaptureRequest contains the configuration for the capture hardware (sensor, lens, flash),
+ * the processing pipeline, the control algorithms, and the output buffers. Also
+ * contains the list of target {@link ANativeWindow}s to send image data to for this
+ * capture.</p>
+ *
+ * <p>ACaptureRequest is created by {@link ACameraDevice_createCaptureRequest}.
+ *
+ * <p>ACaptureRequest is given to {@link ACameraCaptureSession_capture} or
+ * {@link ACameraCaptureSession_setRepeatingRequest} to capture images from a camera.</p>
+ *
+ * <p>Each request can specify a different subset of target {@link ANativeWindow}s for the
+ * camera to send the captured data to. All the {@link ANativeWindow}s used in a request must
+ * be part of the {@link ANativeWindow} list given to the last call to
+ * {@link ACameraDevice_createCaptureSession}, when the request is submitted to the
+ * session.</p>
+ *
+ * <p>For example, a request meant for repeating preview might only include the
+ * {@link ANativeWindow} for the preview SurfaceView or SurfaceTexture, while a
+ * high-resolution still capture would also include a {@link ANativeWindow} from a
+ * {@link AImageReader} configured for high-resolution JPEG images.</p>
+ *
+ * @see ACameraDevice_createCaptureRequest
+ * @see ACameraCaptureSession_capture
+ * @see ACameraCaptureSession_setRepeatingRequest
+ */
+typedef struct ACaptureRequest ACaptureRequest;
+
+/**
+ * Create a ACameraOutputTarget object.
+ *
+ * <p>The ACameraOutputTarget is used in {@link ACaptureRequest_addTarget} method to add an output
+ * {@link ANativeWindow} to ACaptureRequest. Use {@link ACameraOutputTarget_free} to free the object
+ * and its memory after application no longer needs the {@link ACameraOutputTarget}.</p>
+ *
+ * @param window the {@link ANativeWindow} to be associated with the {@link ACameraOutputTarget}
+ * @param output the output {@link ACameraOutputTarget} will be stored here if the
+ * method call succeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds. The created ACameraOutputTarget will
+ * be filled in the output argument.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if window or output is NULL.</li></ul>
+ *
+ * @see ACaptureRequest_addTarget
+ */
+camera_status_t ACameraOutputTarget_create(ANativeWindow* window, ACameraOutputTarget** output);
+
+/**
+ * Free a ACameraOutputTarget object.
+ *
+ * @param output the {@link ACameraOutputTarget} to be freed.
+ *
+ * @see ACameraOutputTarget_create
+ */
+void ACameraOutputTarget_free(ACameraOutputTarget* output);
+
+/**
+ * Add an {@link ACameraOutputTarget} object to {@link ACaptureRequest}.
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param output the output {@link ACameraOutputTarget} to be added to capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureRequest_addTarget(ACaptureRequest* request,
+ const ACameraOutputTarget* output);
+
+/**
+ * Remove an {@link ACameraOutputTarget} object from {@link ACaptureRequest}.
+ *
+ * <p>This method has no effect if the ACameraOutputTarget does not exist in ACaptureRequest.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param output the output {@link ACameraOutputTarget} to be removed from capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureRequest_removeTarget(ACaptureRequest* request,
+ const ACameraOutputTarget* output);
+
+/**
+ * Get a metadata entry from input {@link ACaptureRequest}.
+ *
+ * <p>The memory of the data field in returned entry is managed by camera framework. Do not
+ * attempt to free it.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be get.
+ * @param entry the output {@link ACameraMetadata_const_entry} will be filled here if the method
+ * call succeeeds.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if metadata or entry is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_METADATA_NOT_FOUND} if the capture request does not contain an
+ * entry of input tag value.</li></ul>
+ */
+camera_status_t ACaptureRequest_getConstEntry(
+ const ACaptureRequest* request, uint32_t tag, ACameraMetadata_const_entry* entry);
+
+/*
+ * List all the entry tags in input {@link ACaptureRequest}.
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param numEntries number of metadata entries in input {@link ACaptureRequest}
+ * @param tags the tag values of the metadata entries. Length of tags is returned in numEntries
+ * argument. The memory is managed by ACaptureRequest itself and must NOT be free/delete
+ * by application. Calling ACaptureRequest_setEntry_* methods will invalidate previous
+ * output of ACaptureRequest_getAllTags. Do not access tags after calling
+ * ACaptureRequest_setEntry_*. To get new list of tags after updating capture request,
+ * application must call ACaptureRequest_getAllTags again. Do NOT access tags after
+ * calling ACaptureRequest_free.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request, numEntries or tags is NULL.</li>
+ * <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACaptureRequest_getAllTags(
+ const ACaptureRequest* request, /*out*/int32_t* numTags, /*out*/const uint32_t** tags);
+
+/**
+ * Set/change a camera capture control entry with unsigned 8 bits data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ * zero while data is NULL, the data type of the tag is not unsigned 8 bits, or
+ * the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_u8(
+ ACaptureRequest* request, uint32_t tag, uint32_t count, const uint8_t* data);
+
+/**
+ * Set/change a camera capture control entry with signed 32 bits data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ * zero while data is NULL, the data type of the tag is not signed 32 bits, or
+ * the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_i32(
+ ACaptureRequest* request, uint32_t tag, uint32_t count, const int32_t* data);
+
+/**
+ * Set/change a camera capture control entry with float data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ * zero while data is NULL, the data type of the tag is not float, or
+ * the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_float(
+ ACaptureRequest* request, uint32_t tag, uint32_t count, const float* data);
+
+/**
+ * Set/change a camera capture control entry with signed 64 bits data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ * zero while data is NULL, the data type of the tag is not signed 64 bits, or
+ * the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_i64(
+ ACaptureRequest* request, uint32_t tag, uint32_t count, const int64_t* data);
+
+/**
+ * Set/change a camera capture control entry with double data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ * zero while data is NULL, the data type of the tag is not double, or
+ * the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_double(
+ ACaptureRequest* request, uint32_t tag, uint32_t count, const double* data);
+
+/**
+ * Set/change a camera capture control entry with rational data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ * <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ * <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ * zero while data is NULL, the data type of the tag is not rational, or
+ * the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_rational(
+ ACaptureRequest* request, uint32_t tag, uint32_t count,
+ const ACameraMetadata_rational* data);
+
+/**
+ * Free a {@link ACaptureRequest} structure.
+ *
+ * @param request the {@link ACaptureRequest} to be freed.
+ */
+void ACaptureRequest_free(ACaptureRequest* request);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAPTURE_REQUEST_H */
+
+/** @} */