chromecast/renderer/media/audio_pipeline_proxy.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROMECAST_RENDERER_MEDIA_AUDIO_PIPELINE_PROXY_H_
   6 #define CHROMECAST_RENDERER_MEDIA_AUDIO_PIPELINE_PROXY_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/threading/thread_checker.h"
  13 #include "chromecast/common/media/cma_ipc_common.h"
  14 #include "chromecast/media/cma/pipeline/audio_pipeline.h"
  15 #include "media/base/pipeline_status.h"
  16
  17 namespace base {
  18 class SingleThreadTaskRunner;
  19 class SharedMemory;
  20 }
  21
  22 namespace media {
  23 class AudioDecoderConfig;
  24 }
  25
  26 namespace chromecast {
  27 namespace media {
  28 class AudioPipelineProxyInternal;
  29 struct AvPipelineClient;
  30 class AvStreamerProxy;
  31 class CodedFrameProvider;
  32 class MediaChannelProxy;
  33
  34 class AudioPipelineProxy : public AudioPipeline {
  35  public:
  36   AudioPipelineProxy(scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
  37                      scoped_refptr<MediaChannelProxy> media_channel_proxy);
  38   ~AudioPipelineProxy() override;
  39
  40   void Initialize(
  41       const ::media::AudioDecoderConfig& config,
  42       scoped_ptr<CodedFrameProvider> frame_provider,
  43       const ::media::PipelineStatusCB& status_cb);
  44   void StartFeeding();
  45   void Flush(const base::Closure& done_cb);
  46   void Stop();
  47
  48   // AudioPipeline implementation.
  49   void SetClient(const AvPipelineClient& client) override;
  50   void SetVolume(float volume) override;
  51
  52  private:
  53   base::ThreadChecker thread_checker_;
  54
  55   void OnAvPipeCreated(
  56       const ::media::AudioDecoderConfig& config,
  57       const ::media::PipelineStatusCB& status_cb,
  58       scoped_ptr<base::SharedMemory> shared_memory);
  59   void OnPipeWrite();
  60   void OnPipeRead();
  61
  62   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
  63
  64   // |proxy_| main goal is to convert function calls to IPC messages.
  65   scoped_ptr<AudioPipelineProxyInternal> proxy_;
  66
  67   scoped_ptr<AvStreamerProxy> audio_streamer_;
  68
  69   base::WeakPtr<AudioPipelineProxy> weak_this_;
  70   base::WeakPtrFactory<AudioPipelineProxy> weak_factory_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(AudioPipelineProxy);
  73 };
  74
  75 }  // namespace media
  76 }  // namespace chromecast
  77
  78 #endif  // CHROMECAST_RENDERER_MEDIA_AUDIO_PIPELINE_PROXY_H_