Camera: Support BufferQueue between Camera and StageFright
Use a BufferQueue between Camera and StageFright to pass video
buffers for Camera HALv3 devices.
CameraSource in StageFright will try to use "buffer queue" mode
if it is supported by the camera device. In "buffer queue" mode,
CameraSource creates a buffer queue and a listener thread to recieve
video buffers from camera device. CameraSource then wraps the
ANWBuffer in MediaBuffer. If the camera device doesn't support
"buffer queue" mode, it falls back to "metadata in video buffer"
mode or "real YUV data" mode.
"Metadata in video buffer" mode is removed from Camera2Client and
only "buffer queue" mode is supported.
Bug: 24511454
Change-Id: Ice833b57bcd8d91852d6415402013f56f3e3970a
diff --git a/include/camera/ICamera.h b/include/camera/ICamera.h
index b025735..e35c3a4 100644
--- a/include/camera/ICamera.h
+++ b/include/camera/ICamera.h
@@ -36,6 +36,15 @@
* Keep up-to-date with ICamera.aidl in frameworks/base
*/
public:
+ enum {
+ // Pass real YUV data in video buffers through ICameraClient.dataCallbackTimestamp().
+ VIDEO_BUFFER_MODE_DATA_CALLBACK_YUV = 0,
+ // Pass metadata in video buffers through ICameraClient.dataCallbackTimestamp().
+ VIDEO_BUFFER_MODE_DATA_CALLBACK_METADATA = 1,
+ // Pass video buffers through IGraphicBufferProducer set with setVideoTarget().
+ VIDEO_BUFFER_MODE_BUFFER_QUEUE = 2,
+ };
+
DECLARE_META_INTERFACE(Camera);
virtual void disconnect() = 0;
@@ -109,8 +118,16 @@
// send command to camera driver
virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) = 0;
- // tell the camera hal to store meta data or real YUV data in video buffers.
- virtual status_t storeMetaDataInBuffers(bool enabled) = 0;
+
+ // Tell camera how to pass video buffers. videoBufferMode is one of VIDEO_BUFFER_MODE_*.
+ // Returns OK if the specified video buffer mode is supported. If videoBufferMode is
+ // VIDEO_BUFFER_MODE_BUFFER_QUEUE, setVideoTarget() must be called before starting video
+ // recording.
+ virtual status_t setVideoBufferMode(int32_t videoBufferMode) = 0;
+
+ // Set the video buffer producer for camera to use in VIDEO_BUFFER_MODE_BUFFER_QUEUE mode.
+ virtual status_t setVideoTarget(
+ const sp<IGraphicBufferProducer>& bufferProducer) = 0;
};
// ----------------------------------------------------------------------------