Support multiple video decoders and encoders

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 <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 13 matching lines @@
 namespace content {
 
 // This class encapsulates the GPU process view of a VideoEncodeAccelerator,
 // wrapping the platform-specific VideoEncodeAccelerator instance.  It handles
 // IPC coming in from the renderer and passes it to the underlying VEA.
 class GpuVideoEncodeAccelerator
     : public IPC::Listener,
       public media::VideoEncodeAccelerator::Client,
       public GpuCommandBufferStub::DestructionObserver {
  public:
+  typedef base::Callback<scoped_ptr<media::VideoEncodeAccelerator>(void)>

[Pawel Osciak, 2014/12/31 07:56:00]

private please.

[henryhsu, 2014/12/31 08:47:53]

Done.

+      CreateVEACb;
+
   GpuVideoEncodeAccelerator(int32 host_route_id, GpuCommandBufferStub* stub);
   ~GpuVideoEncodeAccelerator() override;
 
   // Initialize this accelerator with the given parameters and send
   // |init_done_msg| when complete.
   void Initialize(media::VideoFrame::Format input_format,
                   const gfx::Size& input_visible_size,
                   media::VideoCodecProfile output_profile,
                   uint32 initial_bitrate,
                   IPC::Message* init_done_msg);
 
   // IPC::Listener implementation
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // media::VideoEncodeAccelerator::Client implementation.
   void RequireBitstreamBuffers(unsigned int input_count,
                                const gfx::Size& input_coded_size,
                                size_t output_buffer_size) override;
   void BitstreamBufferReady(int32 bitstream_buffer_id,
                             size_t payload_size,
                             bool key_frame) override;
   void NotifyError(media::VideoEncodeAccelerator::Error error) override;
 
   // GpuCommandBufferStub::DestructionObserver implementation.
   void OnWillDestroyStub() override;
 
   // Static query for supported profiles.  This query calls the appropriate
   // platform-specific version.
   static std::vector<gpu::VideoEncodeAcceleratorSupportedProfile>
-  GetSupportedProfiles();
+      GetSupportedProfiles();
   static std::vector<gpu::VideoEncodeAcceleratorSupportedProfile>
-  ConvertMediaToGpuProfiles(const std::vector<
-      media::VideoEncodeAccelerator::SupportedProfile>& media_profiles);
+      ConvertMediaToGpuProfiles(const std::vector<
+          media::VideoEncodeAccelerator::SupportedProfile>& media_profiles);
 
  private:
-  // Create the appropriate platform-specific VEA.
-  static scoped_ptr<media::VideoEncodeAccelerator> CreateEncoder();
+  // Create the appropriate platform-specific VEA callback functions.

[Pawel Osciak, 2014/12/31 07:56:00]

Same comments as in gvda.h please.

[henryhsu, 2014/12/31 08:47:53]

Done.

+  static std::vector<CreateVEACb> CreateEncoderCbs();
+  // Create V4L2 VEA.
+  static scoped_ptr<media::VideoEncodeAccelerator> CreateV4L2Encoder();
+  // Create vaapi VEA on x86 CrOS.
+  static scoped_ptr<media::VideoEncodeAccelerator> CreateVaapiEncoder();
+  // Create Android VEA.
+  static scoped_ptr<media::VideoEncodeAccelerator> CreateAndroidEncoder();
 
   // IPC handlers, proxying media::VideoEncodeAccelerator for the renderer
   // process.
   void OnEncode(int32 frame_id,
                 base::SharedMemoryHandle buffer_handle,
                 uint32 buffer_size,
                 bool force_keyframe);
   void OnUseOutputBitstreamBuffer(int32 buffer_id,
                                   base::SharedMemoryHandle buffer_handle,
                                   uint32 buffer_size);
@@ skipping 27 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_