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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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| 41 | 41 |
| 42 #include "base/atomic_ref_count.h" | 42 #include "base/atomic_ref_count.h" |
| 43 #include "base/gtest_prod_util.h" | 43 #include "base/gtest_prod_util.h" |
| 44 #include "base/memory/ref_counted.h" | 44 #include "base/memory/ref_counted.h" |
| 45 #include "base/memory/scoped_ptr.h" | 45 #include "base/memory/scoped_ptr.h" |
| 46 #include "base/process/process.h" | 46 #include "base/process/process.h" |
| 47 #include "base/sequenced_task_runner_helpers.h" | 47 #include "base/sequenced_task_runner_helpers.h" |
| 48 #include "content/common/content_export.h" | 48 #include "content/common/content_export.h" |
| 49 #include "content/public/browser/browser_message_filter.h" | 49 #include "content/public/browser/browser_message_filter.h" |
| 50 #include "content/public/browser/browser_thread.h" | 50 #include "content/public/browser/browser_thread.h" |
| 51 #include "content/public/browser/render_view_host.h" | 51 #include "content/public/browser/render_process_host.h" |
| 52 #include "media/audio/audio_io.h" | 52 #include "media/audio/audio_io.h" |
| 53 #include "media/audio/audio_logging.h" | 53 #include "media/audio/audio_logging.h" |
| 54 #include "media/audio/audio_output_controller.h" | 54 #include "media/audio/audio_output_controller.h" |
| 55 #include "media/audio/simple_sources.h" | 55 #include "media/audio/simple_sources.h" |
| 56 | 56 |
| 57 namespace media { | 57 namespace media { |
| 58 class AudioManager; | 58 class AudioManager; |
| 59 class AudioParameters; | 59 class AudioParameters; |
| 60 } | 60 } |
| 61 | 61 |
| 62 namespace content { | 62 namespace content { |
| 63 | 63 |
| 64 class AudioMirroringManager; | 64 class AudioMirroringManager; |
| 65 class MediaInternals; | 65 class MediaInternals; |
| 66 class MediaStreamManager; | 66 class MediaStreamManager; |
| 67 class ResourceContext; | 67 class ResourceContext; |
| 68 | 68 |
| 69 class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter { | 69 class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter { |
| 70 public: | 70 public: |
| 71 // Called from UI thread from the owner of this object. | 71 // Called from UI thread from the owner of this object. |
| 72 AudioRendererHost(int render_process_id, | 72 AudioRendererHost(int render_process_id, |
| 73 media::AudioManager* audio_manager, | 73 media::AudioManager* audio_manager, |
| 74 AudioMirroringManager* mirroring_manager, | 74 AudioMirroringManager* mirroring_manager, |
| 75 MediaInternals* media_internals, | 75 MediaInternals* media_internals, |
| 76 MediaStreamManager* media_stream_manager); | 76 MediaStreamManager* media_stream_manager); |
| 77 | 77 |
| 78 // Calls |callback| with the list of AudioOutputControllers for this object. | 78 // Calls |callback| with the list of AudioOutputControllers for this object. |
| 79 void GetOutputControllers( | 79 void GetOutputControllers( |
| 80 int render_view_id, | 80 const RenderProcessHost::GetAudioOutputControllersCallback& |
| 81 const RenderViewHost::GetAudioOutputControllersCallback& callback) const; | 81 callback) const; |
| 82 | 82 |
| 83 // BrowserMessageFilter implementation. | 83 // BrowserMessageFilter implementation. |
| 84 void OnChannelClosing() override; | 84 void OnChannelClosing() override; |
| 85 void OnDestruct() const override; | 85 void OnDestruct() const override; |
| 86 bool OnMessageReceived(const IPC::Message& message) override; | 86 bool OnMessageReceived(const IPC::Message& message) override; |
| 87 | 87 |
| 88 // Returns true if any streams managed by this host are actively playing. Can | 88 // Returns true if any streams managed by this host are actively playing. Can |
| 89 // be called from any thread. | 89 // be called from any thread. |
| 90 bool HasActiveAudio(); | 90 bool HasActiveAudio(); |
| 91 | 91 |
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| 137 void OnSetVolume(int stream_id, double volume); | 137 void OnSetVolume(int stream_id, double volume); |
| 138 | 138 |
| 139 // Complete the process of creating an audio stream. This will set up the | 139 // Complete the process of creating an audio stream. This will set up the |
| 140 // shared memory or shared socket in low latency mode and send the | 140 // shared memory or shared socket in low latency mode and send the |
| 141 // NotifyStreamCreated message to the peer. | 141 // NotifyStreamCreated message to the peer. |
| 142 void DoCompleteCreation(int stream_id); | 142 void DoCompleteCreation(int stream_id); |
| 143 | 143 |
| 144 // Send playing/paused status to the renderer. | 144 // Send playing/paused status to the renderer. |
| 145 void DoNotifyStreamStateChanged(int stream_id, bool is_playing); | 145 void DoNotifyStreamStateChanged(int stream_id, bool is_playing); |
| 146 | 146 |
| 147 RenderViewHost::AudioOutputControllerList DoGetOutputControllers( | 147 RenderProcessHost::AudioOutputControllerList DoGetOutputControllers() const; |
| 148 int render_view_id) const; | |
| 149 | 148 |
| 150 // Send an error message to the renderer. | 149 // Send an error message to the renderer. |
| 151 void SendErrorMessage(int stream_id); | 150 void SendErrorMessage(int stream_id); |
| 152 | 151 |
| 153 // Delete an audio entry, notifying observers first. This is called by | 152 // Delete an audio entry, notifying observers first. This is called by |
| 154 // AudioOutputController after it has closed. | 153 // AudioOutputController after it has closed. |
| 155 void DeleteEntry(scoped_ptr<AudioEntry> entry); | 154 void DeleteEntry(scoped_ptr<AudioEntry> entry); |
| 156 | 155 |
| 157 // Send an error message to the renderer, then close the stream. | 156 // Send an error message to the renderer, then close the stream. |
| 158 void ReportErrorAndClose(int stream_id); | 157 void ReportErrorAndClose(int stream_id); |
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| 180 | 179 |
| 181 // The number of streams in the playing state. | 180 // The number of streams in the playing state. |
| 182 base::AtomicRefCount num_playing_streams_; | 181 base::AtomicRefCount num_playing_streams_; |
| 183 | 182 |
| 184 DISALLOW_COPY_AND_ASSIGN(AudioRendererHost); | 183 DISALLOW_COPY_AND_ASSIGN(AudioRendererHost); |
| 185 }; | 184 }; |
| 186 | 185 |
| 187 } // namespace content | 186 } // namespace content |
| 188 | 187 |
| 189 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_ | 188 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_ |
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