media: Implement zero-copy video playback for VP8.

media/video/gpu_memory_buffer_video_frame_pool.cc

Index: media/video/gpu_memory_buffer_video_frame_pool.cc
diff --git a/media/video/gpu_memory_buffer_video_frame_pool.cc b/media/video/gpu_memory_buffer_video_frame_pool.cc
index 41bad43fdf080d290e65d4bead58642999c75fbb..9e5e5161ec7387da1d8bc55084a43e01fa4e338d 100644
--- a/media/video/gpu_memory_buffer_video_frame_pool.cc
+++ b/media/video/gpu_memory_buffer_video_frame_pool.cc
@@ -27,6 +27,9 @@ gfx::BufferFormat GpuMemoryBufferFormat(VideoPixelFormat format, size_t plane) {
     case PIXEL_FORMAT_YV12:
       DCHECK_LE(plane, 2u);
       return gfx::BufferFormat::R_8;
+    case PIXEL_FORMAT_YV12A:
+      DCHECK_LE(plane, 3u);
+      return gfx::BufferFormat::R_8;
     case PIXEL_FORMAT_NV12:
       DCHECK_LE(plane, 1u);
       return gfx::BufferFormat::YUV_420_BIPLANAR;
@@ -45,6 +48,9 @@ unsigned ImageInternalFormat(VideoPixelFormat format, size_t plane) {
     case PIXEL_FORMAT_YV12:
       DCHECK_LE(plane, 2u);
       return GL_RED_EXT;
+    case PIXEL_FORMAT_YV12A:
+      DCHECK_LE(plane, 3u);
+      return GL_RED_EXT;
     case PIXEL_FORMAT_NV12:
       // TODO(dshwang): support ChromeOS using GL_RG_EXT. crbug.com/356871
       DCHECK_LE(plane, 1u);
@@ -77,6 +83,7 @@ gfx::Size CodedSize(const gfx::Size& size, VideoPixelFormat format) {
   switch (format) {
     case PIXEL_FORMAT_I420:
     case PIXEL_FORMAT_YV12:
+    case PIXEL_FORMAT_YV12A:
     case PIXEL_FORMAT_NV12:
       return gfx::Size(RoundUp(size.width(), 2), RoundUp(size.height(), 2));
     case PIXEL_FORMAT_UYVY:
@@ -349,6 +356,14 @@ class GpuMemoryBufferVideoFrameFuture : public VideoFrameFuture {
             mailbox_holders[VideoFrame::kVPlane], release_video_frame_callback,
             coded_size, visible_rect_, natural_size_, timestamp_);
         break;
+      case PIXEL_FORMAT_YV12A:
+        released_video_frame_ = VideoFrame::WrapYV12ANativeTextures(
+            mailbox_holders[VideoFrame::kYPlane],
+            mailbox_holders[VideoFrame::kUPlane],
+            mailbox_holders[VideoFrame::kVPlane],
+            mailbox_holders[VideoFrame::kAPlane], release_video_frame_callback,
+            coded_size, visible_rect_, natural_size_, timestamp_);
+        break;
       case PIXEL_FORMAT_NV12:
       case PIXEL_FORMAT_UYVY:
         released_video_frame_ = VideoFrame::WrapNativeTexture(
@@ -384,6 +399,7 @@ class GpuMemoryBufferVideoFrameFuture : public VideoFrameFuture {
     switch (frame_resources_->format()) {
       case PIXEL_FORMAT_I420:
       case PIXEL_FORMAT_YV12:
+      case PIXEL_FORMAT_YV12A:
       case PIXEL_FORMAT_UYVY:
         return static_cast<uint8_t*>(
             frame_resources_->GetPlaneResource(plane).gpu_memory_buffer->memory(
@@ -404,6 +420,7 @@ class GpuMemoryBufferVideoFrameFuture : public VideoFrameFuture {
     switch (frame_resources_->format()) {
       case PIXEL_FORMAT_I420:
       case PIXEL_FORMAT_YV12:
+      case PIXEL_FORMAT_YV12A:
       case PIXEL_FORMAT_UYVY:
         return frame_resources_->GetPlaneResource(plane)
             .gpu_memory_buffer->stride(0);
@@ -567,6 +584,7 @@ class GpuMemoryBufferVideoFramePool::PoolImpl
       // TODO(dshwang): support more format. crbug.com/356871
       case PIXEL_FORMAT_I420:
       case PIXEL_FORMAT_YV12:
+      case PIXEL_FORMAT_YV12A:
       case PIXEL_FORMAT_NV12:
       case PIXEL_FORMAT_UYVY:
         return true;