Camera2: Basic ZSL and precapture trigger support.
- Add capture sequencer to control still image capture process
- Use precapture trigger for standard capture in sequencer
- Add infrastructure for reprocessing streams
- Add ZSL processor to maintain ZSL queue
- Add ZSL capture sequence to sequencer
This patch sets up ZSL mode and precapture triggers.
For now, to enable zsl mode, set the system property camera.zsl_mode
to 1.
Bug: 6243944
Change-Id: Icf8cb1a83a7c11a152a11007c8f3c54f8ea1c70c
diff --git a/services/camera/libcameraservice/Camera2Device.h b/services/camera/libcameraservice/Camera2Device.h
index 64f4608..a327d8d 100644
--- a/services/camera/libcameraservice/Camera2Device.h
+++ b/services/camera/libcameraservice/Camera2Device.h
@@ -80,6 +80,12 @@
int *id);
/**
+ * Create an input reprocess stream that uses buffers from an existing
+ * output stream.
+ */
+ status_t createReprocessStreamFromStream(int outputId, int *id);
+
+ /**
* Get information about a given stream.
*/
status_t getStreamInfo(int id,
@@ -97,6 +103,12 @@
status_t deleteStream(int id);
/**
+ * Delete reprocess stream. Must not be called if there are requests in
+ * flight which reference that stream.
+ */
+ status_t deleteReprocessStream(int id);
+
+ /**
* Create a metadata buffer with fields that the HAL device believes are
* best for the given use case
*/
@@ -163,6 +175,21 @@
*/
status_t triggerPrecaptureMetering(uint32_t id);
+ /**
+ * Abstract interface for clients that want to listen to reprocess buffer
+ * release events
+ */
+ struct BufferReleasedListener: public virtual RefBase {
+ virtual void onBufferReleased(buffer_handle_t *handle) = 0;
+ };
+
+ /**
+ * Push a buffer to be reprocessed into a reprocessing stream, and
+ * provide a listener to call once the buffer is returned by the HAL
+ */
+ status_t pushReprocessBuffer(int reprocessStreamId,
+ buffer_handle_t *buffer, wp<BufferReleasedListener> listener);
+
private:
const int mId;
@@ -343,6 +370,86 @@
typedef List<sp<StreamAdapter> > StreamList;
StreamList mStreams;
+ /**
+ * Adapter from an ANativeWindow interface to camera2 device stream ops.
+ * Also takes care of allocating/deallocating stream in device interface
+ */
+ class ReprocessStreamAdapter: public camera2_stream_in_ops, public virtual RefBase {
+ public:
+ ReprocessStreamAdapter(camera2_device_t *d);
+
+ ~ReprocessStreamAdapter();
+
+ /**
+ * Create a HAL device reprocess stream based on an existing output stream.
+ */
+ status_t connectToDevice(const sp<StreamAdapter> &outputStream);
+
+ status_t release();
+
+ /**
+ * Push buffer into stream for reprocessing. Takes ownership until it notifies
+ * that the buffer has been released
+ */
+ status_t pushIntoStream(buffer_handle_t *handle,
+ const wp<BufferReleasedListener> &releaseListener);
+
+ /**
+ * Get stream parameters.
+ * Only valid after a successful connectToDevice call.
+ */
+ int getId() const { return mId; }
+ uint32_t getWidth() const { return mWidth; }
+ uint32_t getHeight() const { return mHeight; }
+ uint32_t getFormat() const { return mFormat; }
+
+ // Dump stream information
+ status_t dump(int fd, const Vector<String16>& args);
+
+ private:
+ enum {
+ ERROR = -1,
+ RELEASED = 0,
+ ACTIVE
+ } mState;
+
+ sp<ANativeWindow> mConsumerInterface;
+ wp<StreamAdapter> mBaseStream;
+
+ struct QueueEntry {
+ buffer_handle_t *handle;
+ wp<BufferReleasedListener> releaseListener;
+ };
+
+ List<QueueEntry> mQueue;
+
+ List<QueueEntry> mInFlightQueue;
+
+ camera2_device_t *mDevice;
+
+ uint32_t mId;
+ uint32_t mWidth;
+ uint32_t mHeight;
+ uint32_t mFormat;
+
+ /** Debugging information */
+ uint32_t mActiveBuffers;
+ uint32_t mFrameCount;
+ int64_t mLastTimestamp;
+
+ const camera2_stream_in_ops *getStreamOps();
+
+ static int acquire_buffer(const camera2_stream_in_ops_t *w,
+ buffer_handle_t** buffer);
+
+ static int release_buffer(const camera2_stream_in_ops_t* w,
+ buffer_handle_t* buffer);
+
+ }; // class ReprocessStreamAdapter
+
+ typedef List<sp<ReprocessStreamAdapter> > ReprocessStreamList;
+ ReprocessStreamList mReprocessStreams;
+
// Receives HAL notifications and routes them to the NotificationListener
static void notificationCallback(int32_t msg_type,
int32_t ext1,