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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // Audio rendering unit utilizing audio output stream provided by browser | 5 // Audio rendering unit utilizing audio output stream provided by browser |
6 // process through IPC. | 6 // process through IPC. |
7 // | 7 // |
8 // Relationship of classes. | 8 // Relationship of classes. |
9 // | 9 // |
10 // AudioRendererHost AudioRendererImpl | 10 // AudioRendererHost AudioRendererImpl |
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55 public AudioMessageFilter::Delegate, | 55 public AudioMessageFilter::Delegate, |
56 public MessageLoop::DestructionObserver { | 56 public MessageLoop::DestructionObserver { |
57 public: | 57 public: |
58 // Methods called on Render thread ------------------------------------------ | 58 // Methods called on Render thread ------------------------------------------ |
59 explicit AudioRendererImpl(AudioMessageFilter* filter); | 59 explicit AudioRendererImpl(AudioMessageFilter* filter); |
60 virtual ~AudioRendererImpl(); | 60 virtual ~AudioRendererImpl(); |
61 | 61 |
62 // Methods called on IO thread ---------------------------------------------- | 62 // Methods called on IO thread ---------------------------------------------- |
63 // AudioMessageFilter::Delegate methods, called by AudioMessageFilter. | 63 // AudioMessageFilter::Delegate methods, called by AudioMessageFilter. |
64 virtual void OnRequestPacket(AudioBuffersState buffers_state); | 64 virtual void OnRequestPacket(AudioBuffersState buffers_state); |
65 virtual void OnStateChanged(const ViewMsg_AudioStreamState_Params& state); | 65 virtual void OnStateChanged(AudioStreamState state); |
66 virtual void OnCreated(base::SharedMemoryHandle handle, uint32 length); | 66 virtual void OnCreated(base::SharedMemoryHandle handle, uint32 length); |
67 virtual void OnLowLatencyCreated(base::SharedMemoryHandle handle, | 67 virtual void OnLowLatencyCreated(base::SharedMemoryHandle handle, |
68 base::SyncSocket::Handle socket_handle, | 68 base::SyncSocket::Handle socket_handle, |
69 uint32 length); | 69 uint32 length); |
70 virtual void OnVolume(double volume); | 70 virtual void OnVolume(double volume); |
71 | 71 |
72 // Methods called on pipeline thread ---------------------------------------- | 72 // Methods called on pipeline thread ---------------------------------------- |
73 // media::Filter implementation. | 73 // media::Filter implementation. |
74 virtual void SetPlaybackRate(float rate); | 74 virtual void SetPlaybackRate(float rate); |
75 virtual void Pause(media::FilterCallback* callback); | 75 virtual void Pause(media::FilterCallback* callback); |
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148 // State variables for prerolling. | 148 // State variables for prerolling. |
149 bool prerolling_; | 149 bool prerolling_; |
150 | 150 |
151 // Remaining bytes for prerolling to complete. | 151 // Remaining bytes for prerolling to complete. |
152 uint32 preroll_bytes_; | 152 uint32 preroll_bytes_; |
153 | 153 |
154 DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl); | 154 DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl); |
155 }; | 155 }; |
156 | 156 |
157 #endif // CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_IMPL_H_ | 157 #endif // CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_IMPL_H_ |
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