SurfaceMediaSource: use the vid enc usage bit

This change makes SurfaceMediaSource add the VIDEO_ENC usage bit when
allocating its GraphicBuffers rather than the HW_TEXTURE bit.

Change-Id: Ie20e225c894fdbc31cad6bb82b3b64c7e98074eb

Author: Jamie Gennis

include/ui/GraphicBuffer.h

@@ -63,6 +63,7 @@ class GraphicBuffer
         USAGE_HW_RENDER         = GRALLOC_USAGE_HW_RENDER,
         USAGE_HW_2D             = GRALLOC_USAGE_HW_2D,
         USAGE_HW_COMPOSER       = GRALLOC_USAGE_HW_COMPOSER,
+        USAGE_HW_VIDEO_ENCODER  = GRALLOC_USAGE_HW_VIDEO_ENCODER,
         USAGE_HW_MASK           = GRALLOC_USAGE_HW_MASK
     };
 

media/libstagefright/SurfaceMediaSource.cpp

@@ -336,7 +336,7 @@ status_t SurfaceMediaSource::dequeueBuffer(int *outBuf, uint32_t w, uint32_t h,
         (uint32_t(buffer->height) != h) ||
         (uint32_t(buffer->format) != format) ||
         ((uint32_t(buffer->usage) & usage) != usage)) {
-            usage |= GraphicBuffer::USAGE_HW_TEXTURE;
+            usage |= GraphicBuffer::USAGE_HW_VIDEO_ENCODER;
             status_t error;
             sp<GraphicBuffer> graphicBuffer(
                     mGraphicBufferAlloc->createGraphicBuffer(