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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // AudioRendererHost serves audio related requests from AudioRenderer which | 5 // AudioRendererHost serves audio related requests from AudioRenderer which |
6 // lives inside the render process and provide access to audio hardware. | 6 // lives inside the render process and provide access to audio hardware. |
7 // | 7 // |
8 // This class is owned by BrowserRenderProcessHost, and instantiated on UI | 8 // This class is owned by BrowserRenderProcessHost, and instantiated on UI |
9 // thread, but all other operations and method calls happen on IO thread, so we | 9 // thread, but all other operations and method calls happen on IO thread, so we |
10 // need to be extra careful about the lifetime of this object. AudioManager is a | 10 // need to be extra careful about the lifetime of this object. AudioManager is a |
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63 class ResourceContext; | 63 class ResourceContext; |
64 | 64 |
65 class CONTENT_EXPORT AudioRendererHost | 65 class CONTENT_EXPORT AudioRendererHost |
66 : public BrowserMessageFilter, | 66 : public BrowserMessageFilter, |
67 public media::AudioOutputController::EventHandler { | 67 public media::AudioOutputController::EventHandler { |
68 public: | 68 public: |
69 // Called from UI thread from the owner of this object. | 69 // Called from UI thread from the owner of this object. |
70 AudioRendererHost(media::AudioManager* audio_manager, | 70 AudioRendererHost(media::AudioManager* audio_manager, |
71 MediaObserver* media_observer); | 71 MediaObserver* media_observer); |
72 | 72 |
73 // content::BrowserMessageFilter implementation. | 73 // BrowserMessageFilter implementation. |
74 virtual void OnChannelClosing() OVERRIDE; | 74 virtual void OnChannelClosing() OVERRIDE; |
75 virtual void OnDestruct() const OVERRIDE; | 75 virtual void OnDestruct() const OVERRIDE; |
76 virtual bool OnMessageReceived(const IPC::Message& message, | 76 virtual bool OnMessageReceived(const IPC::Message& message, |
77 bool* message_was_ok) OVERRIDE; | 77 bool* message_was_ok) OVERRIDE; |
78 | 78 |
79 // AudioOutputController::EventHandler implementations. | 79 // AudioOutputController::EventHandler implementations. |
80 virtual void OnCreated(media::AudioOutputController* controller) OVERRIDE; | 80 virtual void OnCreated(media::AudioOutputController* controller) OVERRIDE; |
81 virtual void OnPlaying(media::AudioOutputController* controller) OVERRIDE; | 81 virtual void OnPlaying(media::AudioOutputController* controller) OVERRIDE; |
82 virtual void OnPaused(media::AudioOutputController* controller) OVERRIDE; | 82 virtual void OnPaused(media::AudioOutputController* controller) OVERRIDE; |
83 virtual void OnError(media::AudioOutputController* controller, | 83 virtual void OnError(media::AudioOutputController* controller, |
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165 | 165 |
166 media::AudioManager* audio_manager_; | 166 media::AudioManager* audio_manager_; |
167 MediaObserver* media_observer_; | 167 MediaObserver* media_observer_; |
168 | 168 |
169 DISALLOW_COPY_AND_ASSIGN(AudioRendererHost); | 169 DISALLOW_COPY_AND_ASSIGN(AudioRendererHost); |
170 }; | 170 }; |
171 | 171 |
172 } // namespace content | 172 } // namespace content |
173 | 173 |
174 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_ | 174 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_ |
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