Add support for timestamps into SurfaceTexture.
API addition: The timestamps are represented as nanoseconds from some
arbitrary time point. Like the SurfaceTexture transform matrix, the
timestamp retrieved by getTimestamp is for the last frame sent to the
GL texture using updateTexImage().
Camera HAL change: Expect vendors to set these timestamps using
native_window_set_buffers_timestamp(). For now, they are
autogenerated by SurfaceTextureClient if set_buffers_timestamp() is
never called, but such timing is likely not accurate enough to pass a
CTS test.
bug:3300707
Change-Id: Ife131a0c2a826ac27342e11b8a6c42ff49e1bea7
diff --git a/include/gui/SurfaceTextureClient.h b/include/gui/SurfaceTextureClient.h
index 7992105..df82bf2 100644
--- a/include/gui/SurfaceTextureClient.h
+++ b/include/gui/SurfaceTextureClient.h
@@ -63,6 +63,7 @@
int dispatchSetBufferCount(va_list args);
int dispatchSetBuffersGeometry(va_list args);
int dispatchSetBuffersTransform(va_list args);
+ int dispatchSetBuffersTimestamp(va_list args);
int dispatchSetCrop(va_list args);
int dispatchSetUsage(va_list args);
@@ -71,6 +72,7 @@
int setBufferCount(int bufferCount);
int setBuffersGeometry(int w, int h, int format);
int setBuffersTransform(int transform);
+ int setBuffersTimestamp(int64_t timestamp);
int setCrop(Rect const* rect);
int setUsage(uint32_t reqUsage);
@@ -114,6 +116,11 @@
// at the next deuque operation. It is initialized to 0.
uint32_t mReqUsage;
+ // mTimestamp is the timestamp that will be used for the next buffer queue
+ // operation. It defaults to NATIVE_WINDOW_TIMESTAMP_AUTO, which means that
+ // a timestamp is auto-generated when queueBuffer is called.
+ int64_t mTimestamp;
+
// mMutex is the mutex used to prevent concurrent access to the member
// variables of SurfaceTexture objects. It must be locked whenever the
// member variables are accessed.