media: Implement MojoVideoDecoder::CanReadWithoutStalling().

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"
@@ skipping 32 matching lines @@
   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(
       const scoped_refptr<VideoFrame>& frame,
+      bool can_read_without_stalling,
       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();
@@ skipping 20 matching lines @@
   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;
+  bool can_read_without_stalling_ = true;
   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_