HW Video: Make media::VideoFrame handle the sync point of the compositor as well as webgl

content/renderer/media/renderer_gpu_video_accelerator_factories.cc

 // Copyright 2013 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 "content/renderer/media/renderer_gpu_video_accelerator_factories.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
 #include "base/bind.h"
@@ skipping 132 matching lines @@
 
   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
   if (!context)
     return;
 
   gpu::gles2::GLES2Implementation* gles2 = context->GetImplementation();
   gles2->DeleteTextures(1, &texture_id);
   DCHECK_EQ(gles2->GetError(), static_cast<GLenum>(GL_NO_ERROR));
 }
 
+uint32 RendererGpuVideoAcceleratorFactories::InsertSyncPoint() {
+  DCHECK(task_runner_->BelongsToCurrentThread());
+
+  WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
+  if (!context)
+    return 0;
+
+  gpu::gles2::GLES2Implementation* gles2 = context->GetImplementation();
+  return gles2->InsertSyncPointCHROMIUM();
+}
+
 void RendererGpuVideoAcceleratorFactories::WaitSyncPoint(uint32 sync_point) {
   DCHECK(task_runner_->BelongsToCurrentThread());
 
   WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
   if (!context)
     return;
 
   gpu::gles2::GLES2Implementation* gles2 = context->GetImplementation();
   gles2->WaitSyncPointCHROMIUM(sync_point);
 
@@ skipping 41 matching lines @@
 #endif
   gles2->ReadPixels(visible_rect.x(),
                     visible_rect.y(),
                     visible_rect.width(),
                     visible_rect.height(),
                     skia_format,
                     GL_UNSIGNED_BYTE,
                     pixels.pixelRef()->pixels());
   gles2->DeleteFramebuffers(1, &fb);
   gles2->DeleteTextures(1, &tmp_texture);
+  gles2->Flush();
   DCHECK_EQ(gles2->GetError(), static_cast<GLenum>(GL_NO_ERROR));
 }
 
 base::SharedMemory* RendererGpuVideoAcceleratorFactories::CreateSharedMemory(
     size_t size) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   return ChildThread::AllocateSharedMemory(size, thread_safe_sender_.get());
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
 RendererGpuVideoAcceleratorFactories::GetTaskRunner() {
   return task_runner_;
 }
 
 }  // namespace content