Reland: H264 HW encode using VideoToolbox

content/common/gpu/media/gpu_video_encode_accelerator.h

 // 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.
 
 #ifndef CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_ENCODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_ENCODE_ACCELERATOR_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 69 matching lines @@
       const gpu::GpuPreferences& gpu_preferences);
 #if defined(OS_CHROMEOS) && defined(USE_V4L2_CODEC)
   static scoped_ptr<media::VideoEncodeAccelerator> CreateV4L2VEA();
 #endif
 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
   static scoped_ptr<media::VideoEncodeAccelerator> CreateVaapiVEA();
 #endif
 #if defined(OS_ANDROID) && defined(ENABLE_WEBRTC)
   static scoped_ptr<media::VideoEncodeAccelerator> CreateAndroidVEA();
 #endif
+#if defined(OS_MACOSX)
+  static scoped_ptr<media::VideoEncodeAccelerator> CreateVTVEA();
+#endif
 
   // IPC handlers, proxying media::VideoEncodeAccelerator for the renderer
   // process.
   void OnEncode(const AcceleratedVideoEncoderMsg_Encode_Params& params);
   void OnEncode2(const AcceleratedVideoEncoderMsg_Encode_Params2& params);
   void OnUseOutputBitstreamBuffer(int32_t buffer_id,
                                   base::SharedMemoryHandle buffer_handle,
                                   uint32_t buffer_size);
   void OnRequestEncodingParametersChange(uint32_t bitrate, uint32_t framerate);
 
@@ skipping 25 matching lines @@
 
   // Weak pointer for media::VideoFrames that refer back to |this|.
   base::WeakPtrFactory<GpuVideoEncodeAccelerator> weak_this_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuVideoEncodeAccelerator);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_ENCODE_ACCELERATOR_H_