Add mailbox-based Mojo VideoFrame variant.

media/mojo/clients/mojo_video_decoder.h

 // Copyright 2016 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 MEDIA_MOJO_CLIENTS_MOJO_VIDEO_DECODER_H_
 #define MEDIA_MOJO_CLIENTS_MOJO_VIDEO_DECODER_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "media/base/video_decoder.h"
 #include "media/mojo/interfaces/video_decoder.mojom.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace media {
 
@@ skipping 20 matching lines @@
                   const InitCB& init_cb,
                   const OutputCB& output_cb) final;
   void Decode(const scoped_refptr<DecoderBuffer>& buffer,
               const DecodeCB& decode_cb) final;
   void Reset(const base::Closure& closure) final;
   bool NeedsBitstreamConversion() const final;
   bool CanReadWithoutStalling() const final;
   int GetMaxDecodeRequests() const final;
 
   // mojom::VideoDecoderClient implementation.
-  void OnVideoFrameDecoded(mojom::VideoFramePtr frame) final;
+  void OnVideoFrameDecoded(
+      mojom::VideoFramePtr frame,
+      const base::Optional<base::UnguessableToken>& release_token) final;
 
  private:
   void OnInitializeDone(bool status,
                         bool needs_bitstream_conversion,
                         int32_t max_decode_requests);
   void OnDecodeDone(uint64_t decode_id, DecodeStatus status);
   void OnResetDone();
 
   void BindRemoteDecoder();
 
+  void OnReleaseMailbox(const base::UnguessableToken& release_token,
+                        const gpu::SyncToken& release_sync_token);
+
   // Cleans up callbacks and blocks future calls.
   void Stop();
 
   // Task runner that the decoder runs on (media thread).
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   // Used to pass the remote decoder from the constructor (on the main thread)
   // to Initialize() (on the media thread).
   mojom::VideoDecoderPtrInfo remote_decoder_info_;
 
   GpuVideoAcceleratorFactories* gpu_factories_ = nullptr;
 
   InitCB init_cb_;
   OutputCB output_cb_;
   uint64_t decode_counter_ = 0;
   std::map<uint64_t, DecodeCB> pending_decodes_;
   base::Closure reset_cb_;
 
   mojom::VideoDecoderPtr remote_decoder_;
   std::unique_ptr<MojoDecoderBufferWriter> mojo_decoder_buffer_writer_;
   bool remote_decoder_bound_ = false;
   bool has_connection_error_ = false;
   mojo::AssociatedBinding<VideoDecoderClient> client_binding_;
 
   bool initialized_ = false;
   bool needs_bitstream_conversion_ = false;
   int32_t max_decode_requests_ = 1;
 
+  base::WeakPtr<MojoVideoDecoder> weak_this_;
+  base::WeakPtrFactory<MojoVideoDecoder> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(MojoVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_CLIENTS_MOJO_VIDEO_DECODER_H_