Camera NDK library: first draft
Bug: 23012001
Change-Id: I06d834421289d4dead1c87301a6ee94487ccf023
diff --git a/include/camera/ndk/NdkCameraMetadata.h b/include/camera/ndk/NdkCameraMetadata.h
new file mode 100644
index 0000000..56412ad
--- /dev/null
+++ b/include/camera/ndk/NdkCameraMetadata.h
@@ -0,0 +1,115 @@
+/*
+ * 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.
+ */
+
+/*
+ * 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 "NdkCameraError.h"
+#include "NdkCameraMetadataTags.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct ACameraMetadata ACameraMetadata;
+
+// 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
+};
+
+typedef struct ACameraMetadata_rational {
+ int32_t numerator;
+ int32_t denominator;
+} ACameraMetadata_rational;
+
+typedef struct ACameraMetadata_entry {
+ uint32_t tag;
+ uint8_t type;
+ uint32_t count;
+ union {
+ uint8_t *u8;
+ int32_t *i32;
+ float *f;
+ int64_t *i64;
+ double *d;
+ ACameraMetadata_rational* r;
+ } data;
+} ACameraMetadata_entry;
+
+typedef struct ACameraMetadata_const_entry {
+ uint32_t tag;
+ uint8_t type;
+ uint32_t count;
+ 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
+ */
+camera_status_t ACameraMetadata_getConstEntry(
+ const ACameraMetadata*, uint32_t tag, ACameraMetadata_const_entry* entry);
+
+// TODO: need an API to list all tags in the metadata. Same for ACaptureRequest
+
+/**
+ * Copy a metadata. Duplicates a metadata structure.
+ * The destination ACameraMetadata must be freed by the application with ACameraMetadata_free
+ * after application is done using it.
+ * Returns NULL when src cannot be copied
+ */
+ACameraMetadata* ACameraMetadata_copy(const ACameraMetadata* src);
+
+/**
+ * Frees a metadata structure.
+ */
+void ACameraMetadata_free(ACameraMetadata*);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif //_NDK_CAMERA_METADATA_H