media: Make GpuMemoryBuffers VideoFrame copies asynchronous.

chromecast/renderer/media/chromecast_media_renderer_factory.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromecast/renderer/media/chromecast_media_renderer_factory.h"
 
 #include "base/command_line.h"
 #include "chromecast/media/base/switching_media_renderer.h"
 #include "chromecast/media/cma/filters/cma_renderer.h"
 #include "chromecast/renderer/media/media_pipeline_proxy.h"
@@ skipping 13 matching lines @@
     : render_frame_id_(render_frame_id),
       gpu_factories_(gpu_factories),
       media_log_(media_log) {
 }
 
 ChromecastMediaRendererFactory::~ChromecastMediaRendererFactory() {
 }
 
 scoped_ptr<::media::Renderer> ChromecastMediaRendererFactory::CreateRenderer(
     const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+    const scoped_refptr<base::TaskRunner>& worker_task_runner,
     ::media::AudioRendererSink* audio_renderer_sink,
     ::media::VideoRendererSink* video_renderer_sink) {
   if (!default_render_factory_) {
     // Chromecast doesn't have input audio devices, so leave this uninitialized
     ::media::AudioParameters input_audio_params;
     // TODO(servolk): Audio parameters are hardcoded for now, but in the future
     // either we need to obtain AudioHardwareConfig from RenderThreadImpl,
     // or media renderer needs to figure out optimal audio parameters itself.
     const int kDefaultSamplingRate = 48000;
     const int kDefaultBitsPerSample = 16;
@@ skipping 16 matching lines @@
   // TODO(erickung): crbug.com/443956. Need to provide right LoadType.
   LoadType cma_load_type = kLoadTypeMediaSource;
   scoped_ptr<MediaPipeline> cma_media_pipeline(
       new MediaPipelineProxy(
           render_frame_id_,
           content::RenderThread::Get()->GetIOMessageLoopProxy(),
           cma_load_type));
   scoped_ptr<CmaRenderer> cma_renderer(new CmaRenderer(
       cma_media_pipeline.Pass(), video_renderer_sink, gpu_factories_));
   scoped_ptr<::media::Renderer> default_media_render(
-      default_render_factory_->CreateRenderer(media_task_runner,
-                                              audio_renderer_sink,
-                                              video_renderer_sink));
+      default_render_factory_->CreateRenderer(
+          media_task_runner, media_task_runner, audio_renderer_sink,
+          video_renderer_sink));
   scoped_ptr<SwitchingMediaRenderer> media_renderer(new SwitchingMediaRenderer(
       default_media_render.Pass(), cma_renderer.Pass()));
   return media_renderer.Pass();
 }
 
 }  // namespace media
 }  // namespace chromecast