Camera NDK library: capture session implementation
Bug: 23012001
Change-Id: I3fd93205dcf1b9ed5a947cb944919eb531f219fc
diff --git a/camera/ndk/impl/ACameraCaptureSession.h b/camera/ndk/impl/ACameraCaptureSession.h
new file mode 100644
index 0000000..1db1b21
--- /dev/null
+++ b/camera/ndk/impl/ACameraCaptureSession.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+#ifndef _ACAMERA_CAPTURE_SESSION_H
+#define _ACAMERA_CAPTURE_SESSION_H
+
+#include <set>
+#include <hardware/camera3.h>
+#include <NdkCameraDevice.h>
+#include "ACameraDevice.h"
+
+using namespace android;
+
+struct ACaptureSessionOutput {
+ ACaptureSessionOutput(ANativeWindow* window) : mWindow(window) {};
+
+ bool operator == (const ACaptureSessionOutput& other) const {
+ return mWindow == other.mWindow;
+ }
+ bool operator != (const ACaptureSessionOutput& other) const {
+ return mWindow != other.mWindow;
+ }
+ bool operator < (const ACaptureSessionOutput& other) const {
+ return mWindow < other.mWindow;
+ }
+ bool operator > (const ACaptureSessionOutput& other) const {
+ return mWindow > other.mWindow;
+ }
+
+ ANativeWindow* mWindow;
+ int mRotation = CAMERA3_STREAM_ROTATION_0;
+};
+
+struct ACaptureSessionOutputContainer {
+ std::set<ACaptureSessionOutput> mOutputs;
+};
+
+/**
+ * ACameraCaptureSession opaque struct definition
+ * Leave outside of android namespace because it's NDK struct
+ */
+struct ACameraCaptureSession : public RefBase {
+ public:
+ ACameraCaptureSession(
+ int id,
+ const ACaptureSessionOutputContainer* outputs,
+ const ACameraCaptureSession_stateCallbacks* cb,
+ CameraDevice* device) :
+ mId(id), mOutput(*outputs), mUserSessionCallback(*cb),
+ mDevice(device) {}
+
+ // This can be called in app calling close() or after some app callback is finished
+ // Make sure the caller does not hold device or session lock!
+ ~ACameraCaptureSession();
+
+ // No API except Session_Close will work if device is closed
+ // A session will enter closed state when one of the following happens:
+ // 1. Explicitly closed by app
+ // 2. Replaced by a newer session
+ // 3. Device is closed
+ bool isClosed() { Mutex::Autolock _l(mSessionLock); return mIsClosed; }
+
+ // Close the session and mark app no longer need this session.
+ void closeByApp();
+
+ camera_status_t stopRepeating();
+
+ camera_status_t setRepeatingRequest(
+ /*optional*/ACameraCaptureSession_captureCallbacks* cbs,
+ int numRequests, ACaptureRequest** requests,
+ /*optional*/int* captureSequenceId);
+
+ camera_status_t capture(
+ /*optional*/ACameraCaptureSession_captureCallbacks* cbs,
+ int numRequests, ACaptureRequest** requests,
+ /*optional*/int* captureSequenceId);
+
+ ACameraDevice* getDevice();
+
+ private:
+ friend class CameraDevice;
+
+ // Close session because app close camera device, camera device got ERROR_DISCONNECTED,
+ // or a new session is replacing this session.
+ void closeByDevice();
+
+ sp<CameraDevice> getDeviceSp();
+
+ const int mId;
+ const ACaptureSessionOutputContainer mOutput;
+ const ACameraCaptureSession_stateCallbacks mUserSessionCallback;
+ const wp<CameraDevice> mDevice;
+ bool mIsClosed = false;
+ bool mIdle = true;
+ Mutex mSessionLock;
+};
+
+#endif // _ACAMERA_CAPTURE_SESSION_H