OLD | NEW |
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 |
(...skipping 35 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
46 #include "base/message_loop_helpers.h" | 46 #include "base/message_loop_helpers.h" |
47 #include "base/process.h" | 47 #include "base/process.h" |
48 #include "base/shared_memory.h" | 48 #include "base/shared_memory.h" |
49 #include "content/common/content_export.h" | 49 #include "content/common/content_export.h" |
50 #include "content/public/browser/browser_message_filter.h" | 50 #include "content/public/browser/browser_message_filter.h" |
51 #include "content/public/browser/browser_thread.h" | 51 #include "content/public/browser/browser_thread.h" |
52 #include "media/audio/audio_io.h" | 52 #include "media/audio/audio_io.h" |
53 #include "media/audio/audio_output_controller.h" | 53 #include "media/audio/audio_output_controller.h" |
54 #include "media/audio/simple_sources.h" | 54 #include "media/audio/simple_sources.h" |
55 | 55 |
| 56 class AudioManager; |
| 57 class AudioParameters; |
| 58 |
56 namespace content { | 59 namespace content { |
57 class MediaObserver; | 60 class MediaObserver; |
58 class ResourceContext; | 61 class ResourceContext; |
59 } // namespace content | 62 } // namespace content |
60 | 63 |
61 namespace media { | |
62 class AudioManager; | |
63 class AudioParameters; | |
64 } | |
65 | |
66 class CONTENT_EXPORT AudioRendererHost | 64 class CONTENT_EXPORT AudioRendererHost |
67 : public content::BrowserMessageFilter, | 65 : public content::BrowserMessageFilter, |
68 public media::AudioOutputController::EventHandler { | 66 public media::AudioOutputController::EventHandler { |
69 public: | 67 public: |
70 struct AudioEntry { | 68 struct AudioEntry { |
71 AudioEntry(); | 69 AudioEntry(); |
72 ~AudioEntry(); | 70 ~AudioEntry(); |
73 | 71 |
74 // The AudioOutputController that manages the audio stream. | 72 // The AudioOutputController that manages the audio stream. |
75 scoped_refptr<media::AudioOutputController> controller; | 73 scoped_refptr<media::AudioOutputController> controller; |
76 | 74 |
77 // The audio stream ID. | 75 // The audio stream ID. |
78 int stream_id; | 76 int stream_id; |
79 | 77 |
80 // Shared memory for transmission of the audio data. | 78 // Shared memory for transmission of the audio data. |
81 base::SharedMemory shared_memory; | 79 base::SharedMemory shared_memory; |
82 | 80 |
83 // The synchronous reader to be used by the controller. We have the | 81 // The synchronous reader to be used by the controller. We have the |
84 // ownership of the reader. | 82 // ownership of the reader. |
85 scoped_ptr<media::AudioOutputController::SyncReader> reader; | 83 scoped_ptr<media::AudioOutputController::SyncReader> reader; |
86 | 84 |
87 // Set to true after we called Close() for the controller. | 85 // Set to true after we called Close() for the controller. |
88 bool pending_close; | 86 bool pending_close; |
89 }; | 87 }; |
90 | 88 |
91 typedef std::map<int, AudioEntry*> AudioEntryMap; | 89 typedef std::map<int, AudioEntry*> AudioEntryMap; |
92 | 90 |
93 // Called from UI thread from the owner of this object. | 91 // Called from UI thread from the owner of this object. |
94 AudioRendererHost(media::AudioManager* audio_manager, | 92 AudioRendererHost(AudioManager* audio_manager, |
95 content::MediaObserver* media_observer); | 93 content::MediaObserver* media_observer); |
96 | 94 |
97 // content::BrowserMessageFilter implementation. | 95 // content::BrowserMessageFilter implementation. |
98 virtual void OnChannelClosing() OVERRIDE; | 96 virtual void OnChannelClosing() OVERRIDE; |
99 virtual void OnDestruct() const OVERRIDE; | 97 virtual void OnDestruct() const OVERRIDE; |
100 virtual bool OnMessageReceived(const IPC::Message& message, | 98 virtual bool OnMessageReceived(const IPC::Message& message, |
101 bool* message_was_ok) OVERRIDE; | 99 bool* message_was_ok) OVERRIDE; |
102 | 100 |
103 // AudioOutputController::EventHandler implementations. | 101 // AudioOutputController::EventHandler implementations. |
104 virtual void OnCreated(media::AudioOutputController* controller) OVERRIDE; | 102 virtual void OnCreated(media::AudioOutputController* controller) OVERRIDE; |
(...skipping 11 matching lines...) Expand all Loading... |
116 FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, MockStreamDataConversation); | 114 FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, MockStreamDataConversation); |
117 | 115 |
118 virtual ~AudioRendererHost(); | 116 virtual ~AudioRendererHost(); |
119 | 117 |
120 // Methods called on IO thread ---------------------------------------------- | 118 // Methods called on IO thread ---------------------------------------------- |
121 | 119 |
122 // Audio related IPC message handlers. | 120 // Audio related IPC message handlers. |
123 // Creates an audio output stream with the specified format. If this call is | 121 // Creates an audio output stream with the specified format. If this call is |
124 // successful this object would keep an internal entry of the stream for the | 122 // successful this object would keep an internal entry of the stream for the |
125 // required properties. | 123 // required properties. |
126 void OnCreateStream(int stream_id, const media::AudioParameters& params); | 124 void OnCreateStream(int stream_id, const AudioParameters& params); |
127 | 125 |
128 // Play the audio stream referenced by |stream_id|. | 126 // Play the audio stream referenced by |stream_id|. |
129 void OnPlayStream(int stream_id); | 127 void OnPlayStream(int stream_id); |
130 | 128 |
131 // Pause the audio stream referenced by |stream_id|. | 129 // Pause the audio stream referenced by |stream_id|. |
132 void OnPauseStream(int stream_id); | 130 void OnPauseStream(int stream_id); |
133 | 131 |
134 // Discard all audio data in stream referenced by |stream_id|. | 132 // Discard all audio data in stream referenced by |stream_id|. |
135 void OnFlushStream(int stream_id); | 133 void OnFlushStream(int stream_id); |
136 | 134 |
(...skipping 36 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
173 AudioEntry* LookupById(int stream_id); | 171 AudioEntry* LookupById(int stream_id); |
174 | 172 |
175 // Search for a AudioEntry having the reference to |controller|. | 173 // Search for a AudioEntry having the reference to |controller|. |
176 // This method is used to look up an AudioEntry after a controller | 174 // This method is used to look up an AudioEntry after a controller |
177 // event is received. | 175 // event is received. |
178 AudioEntry* LookupByController(media::AudioOutputController* controller); | 176 AudioEntry* LookupByController(media::AudioOutputController* controller); |
179 | 177 |
180 // A map of stream IDs to audio sources. | 178 // A map of stream IDs to audio sources. |
181 AudioEntryMap audio_entries_; | 179 AudioEntryMap audio_entries_; |
182 | 180 |
183 media::AudioManager* audio_manager_; | 181 AudioManager* audio_manager_; |
184 content::MediaObserver* media_observer_; | 182 content::MediaObserver* media_observer_; |
185 | 183 |
186 DISALLOW_COPY_AND_ASSIGN(AudioRendererHost); | 184 DISALLOW_COPY_AND_ASSIGN(AudioRendererHost); |
187 }; | 185 }; |
188 | 186 |
189 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_ | 187 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_ |
OLD | NEW |