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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_RENDERER_H_ | 5 #ifndef CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_RENDERER_H_ |
6 #define CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_RENDERER_H_ | 6 #define CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_RENDERER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
(...skipping 23 matching lines...) Expand all Loading... | |
34 // Sets the output volume. | 34 // Sets the output volume. |
35 virtual void SetVolume(float volume) = 0; | 35 virtual void SetVolume(float volume) = 0; |
36 | 36 |
37 // Returns a pointer to the internal output device. | 37 // Returns a pointer to the internal output device. |
38 // The pointer is not to be owned by the caller and is valid only during | 38 // The pointer is not to be owned by the caller and is valid only during |
39 // the lifetime of the MediaStreamAudioRenderer. | 39 // the lifetime of the MediaStreamAudioRenderer. |
40 // It can be null, which means that access to the output device is not | 40 // It can be null, which means that access to the output device is not |
41 // supported. | 41 // supported. |
42 virtual media::OutputDevice* GetOutputDevice() = 0; | 42 virtual media::OutputDevice* GetOutputDevice() = 0; |
43 | 43 |
44 // Attempts to switch the audio output device. | |
45 // Once the attempt is finished, |callback| is invoked with the | |
46 // result of the operation passed as a parameter. The result is a value from | |
47 // the media::SwitchOutputDeviceResult enum. | |
Guido Urdaneta
2016/03/17 17:38:23
s/media::SwitchOutputDeviceResult/media::OutputDev
o1ka
2016/03/18 10:45:40
Done.
| |
48 // There is no guarantee about the thread where |callback| will | |
49 // be invoked, so users are advised to use media::BindToCurrentLoop() to | |
50 // ensure that |callback| runs on the correct thread. | |
51 // Note also that copy constructors and destructors for arguments bound to | |
52 // |callback| may run on arbitrary threads as |callback| is moved across | |
53 // threads. It is advisable to bind arguments such that they are released by | |
54 // |callback| when it runs in order to avoid surprises. | |
55 virtual void SwitchOutputDevice( | |
56 const std::string& device_id, | |
57 const url::Origin& security_origin, | |
58 const media::SwitchOutputDeviceCB& callback) = 0; | |
59 | |
44 // Time stamp that reflects the current render time. Should not be updated | 60 // Time stamp that reflects the current render time. Should not be updated |
45 // when paused. | 61 // when paused. |
46 virtual base::TimeDelta GetCurrentRenderTime() const = 0; | 62 virtual base::TimeDelta GetCurrentRenderTime() const = 0; |
47 | 63 |
48 // Returns true if the implementation is a local renderer and false | 64 // Returns true if the implementation is a local renderer and false |
49 // otherwise. | 65 // otherwise. |
50 virtual bool IsLocalRenderer() const = 0; | 66 virtual bool IsLocalRenderer() const = 0; |
51 | 67 |
52 protected: | 68 protected: |
53 friend class base::RefCountedThreadSafe<MediaStreamAudioRenderer>; | 69 friend class base::RefCountedThreadSafe<MediaStreamAudioRenderer>; |
54 | 70 |
55 virtual ~MediaStreamAudioRenderer() {} | 71 virtual ~MediaStreamAudioRenderer() {} |
56 }; | 72 }; |
57 | 73 |
58 } // namespace content | 74 } // namespace content |
59 | 75 |
60 #endif // CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_RENDERER_H_ | 76 #endif // CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_RENDERER_H_ |
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