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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 // AudioInputDeviceManager manages the audio input devices. In particular it | 5 // AudioInputDeviceManager manages the audio input devices. In particular it |
6 // communicates with MediaStreamManager and AudioInputRendererHost on the | 6 // communicates with MediaStreamManager and AudioInputRendererHost on the |
7 // browser IO thread, handles queries like enumerate/open/close from | 7 // browser IO thread, handles queries like enumerate/open/close from |
8 // MediaStreamManager and start/stop from AudioInputRendererHost. | 8 // MediaStreamManager and start/stop from AudioInputRendererHost. |
9 | 9 // The work for enumerate/open/close is handled asynchronously on Media Stream |
10 // All the queries and work are handled on the IO thread. | 10 // device thread, while start/stop are synchronous on the IO thread. |
11 | 11 |
12 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ | 12 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ |
13 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ | 13 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ |
14 | 14 |
15 #include <map> | 15 #include <map> |
16 | 16 |
17 #include "base/memory/ref_counted.h" | 17 #include "base/memory/ref_counted.h" |
18 #include "base/threading/thread.h" | 18 #include "base/threading/thread.h" |
19 #include "content/browser/renderer_host/media/media_stream_provider.h" | 19 #include "content/browser/renderer_host/media/media_stream_provider.h" |
20 #include "content/common/content_export.h" | 20 #include "content/common/content_export.h" |
(...skipping 16 matching lines...) Expand all Loading... | |
37 // even though Open() has not been called. This is used to be able to use the | 37 // even though Open() has not been called. This is used to be able to use the |
38 // AudioInputDeviceManager before MediaStream is implemented. | 38 // AudioInputDeviceManager before MediaStream is implemented. |
39 static const int kFakeOpenSessionId; | 39 static const int kFakeOpenSessionId; |
40 | 40 |
41 static const int kInvalidSessionId; | 41 static const int kInvalidSessionId; |
42 static const char kInvalidDeviceId[]; | 42 static const char kInvalidDeviceId[]; |
43 | 43 |
44 explicit AudioInputDeviceManager(media::AudioManager* audio_manager); | 44 explicit AudioInputDeviceManager(media::AudioManager* audio_manager); |
45 | 45 |
46 // MediaStreamProvider implementation, called on IO thread. | 46 // MediaStreamProvider implementation, called on IO thread. |
47 virtual void Register(MediaStreamProviderListener* listener) OVERRIDE; | 47 virtual void Register(MediaStreamProviderListener* listener, |
48 base::MessageLoopProxy* message_loop) OVERRIDE; | |
tommi (sloooow) - chröme
2012/07/04 13:46:48
device_thread_loop?
no longer working on chromium
2012/07/04 14:31:39
Done.
| |
48 virtual void Unregister() OVERRIDE; | 49 virtual void Unregister() OVERRIDE; |
49 virtual void EnumerateDevices() OVERRIDE; | 50 virtual void EnumerateDevices() OVERRIDE; |
50 virtual int Open(const StreamDeviceInfo& device) OVERRIDE; | 51 virtual int Open(const StreamDeviceInfo& device) OVERRIDE; |
51 virtual void Close(int session_id) OVERRIDE; | 52 virtual void Close(int session_id) OVERRIDE; |
52 | 53 |
53 // Functions used by AudioInputRenderHost, called on IO thread. | 54 // Functions used by AudioInputRenderHost, called on IO thread. |
54 // Start the device referenced by the session id. | 55 // Start the device referenced by the session id. |
55 void Start(int session_id, | 56 void Start(int session_id, |
56 AudioInputDeviceManagerEventHandler* event_handler); | 57 AudioInputDeviceManagerEventHandler* event_handler); |
57 // Stop the device referenced by the session id. | 58 // Stop the device referenced by the session id. |
58 void Stop(int session_id); | 59 void Stop(int session_id); |
59 | 60 |
60 private: | 61 private: |
61 friend class base::RefCountedThreadSafe<AudioInputDeviceManager>; | 62 friend class base::RefCountedThreadSafe<AudioInputDeviceManager>; |
62 virtual ~AudioInputDeviceManager(); | 63 virtual ~AudioInputDeviceManager(); |
63 | 64 |
65 // Executed on media stream device thread. | |
66 void EnumerateOnDeviceThread(); | |
67 void OpenOnDeviceThread(int session_id, const StreamDeviceInfo& device); | |
68 void CloseOnDeviceThread(int session_id); | |
69 | |
64 // Executed on IO thread to call Listener. | 70 // Executed on IO thread to call Listener. |
65 void DevicesEnumeratedOnIOThread(StreamDeviceInfoArray* devices); | 71 void DevicesEnumeratedOnIOThread(StreamDeviceInfoArray* devices); |
66 void OpenedOnIOThread(int session_id); | 72 void OpenedOnIOThread(int session_id); |
67 void ClosedOnIOThread(int session_id); | 73 void ClosedOnIOThread(int session_id); |
68 void ErrorOnIOThread(int session_id, MediaStreamProviderError error); | 74 void ErrorOnIOThread(int session_id, MediaStreamProviderError error); |
69 | 75 |
76 bool IsOnDeviceThread() const; | |
77 | |
78 // Only accessed on Browser::IO thread. | |
70 MediaStreamProviderListener* listener_; | 79 MediaStreamProviderListener* listener_; |
71 int next_capture_session_id_; | 80 int next_capture_session_id_; |
72 typedef std::map<int, AudioInputDeviceManagerEventHandler*> EventHandlerMap; | 81 typedef std::map<int, AudioInputDeviceManagerEventHandler*> EventHandlerMap; |
73 EventHandlerMap event_handlers_; | 82 EventHandlerMap event_handlers_; |
83 | |
84 // Only accessed from media stream device thread. | |
74 typedef std::map<int, media::AudioDeviceName> AudioInputDeviceMap; | 85 typedef std::map<int, media::AudioDeviceName> AudioInputDeviceMap; |
75 AudioInputDeviceMap devices_; | 86 AudioInputDeviceMap devices_; |
76 // TODO(tommi): Is it necessary to store this as a member? | |
77 media::AudioManager* audio_manager_; | 87 media::AudioManager* audio_manager_; |
78 | 88 |
89 // The message loop of media stream device thread that this object runs on. | |
90 scoped_refptr<base::MessageLoopProxy> device_loop_; | |
91 | |
79 DISALLOW_COPY_AND_ASSIGN(AudioInputDeviceManager); | 92 DISALLOW_COPY_AND_ASSIGN(AudioInputDeviceManager); |
80 }; | 93 }; |
81 | 94 |
82 } // namespace media_stream | 95 } // namespace media_stream |
83 | 96 |
84 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ | 97 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ |
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