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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 #ifndef CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_ | 5 #ifndef CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_ |
6 #define CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_ | 6 #define CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_ |
7 | 7 |
8 #include "content/public/browser/media_request_state.h" | 8 #include "content/public/browser/media_request_state.h" |
9 #include "content/public/common/media_stream_request.h" | 9 #include "content/public/common/media_stream_request.h" |
10 | 10 |
11 namespace content { | 11 namespace content { |
12 | 12 |
13 // An embedder may implement MediaObserver and return it from | 13 // An embedder may implement MediaObserver and return it from |
14 // ContentBrowserClient to receive callbacks as media events occur. | 14 // ContentBrowserClient to receive callbacks as media events occur. |
15 class MediaObserver { | 15 class MediaObserver { |
16 public: | 16 public: |
17 // Called when a audio capture device is plugged in or unplugged. | 17 // Called when a audio capture device is plugged in or unplugged. |
18 virtual void OnAudioCaptureDevicesChanged( | 18 virtual void OnAudioCaptureDevicesChanged( |
19 const MediaStreamDevices& devices) = 0; | 19 const MediaStreamDevices& devices) = 0; |
20 | 20 |
21 // Called when a video capture device is plugged in or unplugged. | 21 // Called when a video capture device is plugged in or unplugged. |
22 virtual void OnVideoCaptureDevicesChanged( | 22 virtual void OnVideoCaptureDevicesChanged( |
23 const MediaStreamDevices& devices) = 0; | 23 const MediaStreamDevices& devices) = 0; |
24 | 24 |
25 // Called when a media request changes state. | 25 // Called when a media request changes state. |
26 virtual void OnMediaRequestStateChanged( | 26 virtual void OnMediaRequestStateChanged( |
27 int render_process_id, | 27 int render_process_id, |
28 int render_view_id, | 28 int render_view_id, |
29 int page_request_id, | 29 int page_request_id, |
| 30 const GURL& security_origin, |
30 const MediaStreamDevice& device, | 31 const MediaStreamDevice& device, |
31 MediaRequestState state) = 0; | 32 MediaRequestState state) = 0; |
32 | 33 |
33 // Called when an audio stream transitions into a playing or paused state, and | 34 // Called when an audio stream transitions into a playing or paused state, and |
34 // also at regular intervals to report the current power level of the audio | 35 // also at regular intervals to report the current power level of the audio |
35 // signal in dBFS (decibels relative to full-scale) units. |clipped| is true | 36 // signal in dBFS (decibels relative to full-scale) units. |clipped| is true |
36 // if any part of the audio signal has been clipped since the last call. See | 37 // if any part of the audio signal has been clipped since the last call. See |
37 // media/audio/audio_power_monitor.h for more info. | 38 // media/audio/audio_power_monitor.h for more info. |
38 virtual void OnAudioStreamPlayingChanged( | 39 virtual void OnAudioStreamPlayingChanged( |
39 int render_process_id, | 40 int render_process_id, |
40 int render_view_id, | 41 int render_view_id, |
41 int stream_id, | 42 int stream_id, |
42 bool is_playing, | 43 bool is_playing, |
43 float power_dbfs, | 44 float power_dbfs, |
44 bool clipped) = 0; | 45 bool clipped) = 0; |
45 | 46 |
46 // Called when the audio stream is being created. | 47 // Called when the audio stream is being created. |
47 virtual void OnCreatingAudioStream(int render_process_id, | 48 virtual void OnCreatingAudioStream(int render_process_id, |
48 int render_view_id) = 0; | 49 int render_view_id) = 0; |
49 | 50 |
50 protected: | 51 protected: |
51 virtual ~MediaObserver() {} | 52 virtual ~MediaObserver() {} |
52 }; | 53 }; |
53 | 54 |
54 } // namespace content | 55 } // namespace content |
55 | 56 |
56 #endif // CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_ | 57 #endif // CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_ |
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