SurfaceTexture can now force the client to request a buffer
SurfaceTexture now has the concept of default size a new method,
setDefaultBufferSize() to set it. When the default size is
changed, dequeueBuffer() will return a value telling the
client that it must ask for a new buffer.
The above only applies if the client has not
overriden the buffer size with setGeometry.
Change-Id: I520dc40363054b7e37fdb67d6a2e7bce70326e81
diff --git a/include/gui/SurfaceTexture.h b/include/gui/SurfaceTexture.h
index afa64d3..585d288 100644
--- a/include/gui/SurfaceTexture.h
+++ b/include/gui/SurfaceTexture.h
@@ -121,6 +121,12 @@
// buffers before the client is done with them.
sp<IBinder> getAllocator();
+ // setDefaultBufferSize is used to set the size of buffers returned by
+ // requestBuffers when a with and height of zero is requested.
+ // A call to setDefaultBufferSize() may trigger requestBuffers() to
+ // be called from the client.
+ status_t setDefaultBufferSize(uint32_t w, uint32_t h);
+
private:
// freeAllBuffers frees the resources (both GraphicBuffer and EGLImage) for
@@ -158,6 +164,23 @@
// for a slot when requestBuffer is called with that slot's index.
BufferSlot mSlots[NUM_BUFFER_SLOTS];
+ // mDefaultWidth holds the default width of allocated buffers. It is used
+ // in requestBuffers() if a width and height of zero is specified.
+ uint32_t mDefaultWidth;
+
+ // mDefaultHeight holds the default height of allocated buffers. It is used
+ // in requestBuffers() if a width and height of zero is specified.
+ uint32_t mDefaultHeight;
+
+ // mPixelFormat holds the pixel format of allocated buffers. It is used
+ // in requestBuffers() if a format of zero is specified.
+ uint32_t mPixelFormat;
+
+ // mUseDefaultSize indicates whether or not the default size should be used
+ // that is, if the last requestBuffer has been called with both width
+ // and height null.
+ bool mUseDefaultSize;
+
// mBufferCount is the number of buffer slots that the client and server
// must maintain. It defaults to MIN_BUFFER_SLOTS and can be changed by
// calling setBufferCount.