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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 MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_ | 5 #ifndef MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_ |
6 #define MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_ | 6 #define MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
11 #include "media/audio/audio_parameters.h" | 11 #include "media/audio/audio_parameters.h" |
12 #include "media/base/audio_bus.h" | 12 #include "media/base/audio_bus.h" |
13 #include "media/base/media_export.h" | 13 #include "media/base/media_export.h" |
14 | 14 |
15 namespace media { | 15 namespace media { |
16 | 16 |
17 // AudioCapturerSource is an interface representing the source for | 17 // AudioCapturerSource is an interface representing the source for |
18 // captured audio. An implementation will periodically call Capture() on a | 18 // captured audio. An implementation will periodically call Capture() on a |
19 // callback object. | 19 // callback object. |
20 class AudioCapturerSource | 20 class AudioCapturerSource |
21 : public base::RefCountedThreadSafe<media::AudioCapturerSource> { | 21 : public base::RefCountedThreadSafe<media::AudioCapturerSource> { |
22 public: | 22 public: |
23 class CaptureCallback { | 23 class CaptureCallback { |
24 public: | 24 public: |
25 // Callback to deliver the captured data from the OS. | 25 // Callback to deliver the captured data from the OS. |
| 26 // TODO(chcunningham): Update delay argument to use frames instead of |
| 27 // milliseconds to prevent loss of precision. See http://crbug.com/587291. |
26 virtual void Capture(const AudioBus* audio_source, | 28 virtual void Capture(const AudioBus* audio_source, |
27 int audio_delay_milliseconds, | 29 int audio_delay_milliseconds, |
28 double volume, | 30 double volume, |
29 bool key_pressed) = 0; | 31 bool key_pressed) = 0; |
30 | 32 |
31 // Signals an error has occurred. | 33 // Signals an error has occurred. |
32 virtual void OnCaptureError(const std::string& message) = 0; | 34 virtual void OnCaptureError(const std::string& message) = 0; |
33 | 35 |
34 protected: | 36 protected: |
35 virtual ~CaptureCallback() {} | 37 virtual ~CaptureCallback() {} |
(...skipping 23 matching lines...) Expand all Loading... |
59 virtual void SetAutomaticGainControl(bool enable) = 0; | 61 virtual void SetAutomaticGainControl(bool enable) = 0; |
60 | 62 |
61 protected: | 63 protected: |
62 friend class base::RefCountedThreadSafe<AudioCapturerSource>; | 64 friend class base::RefCountedThreadSafe<AudioCapturerSource>; |
63 virtual ~AudioCapturerSource() {} | 65 virtual ~AudioCapturerSource() {} |
64 }; | 66 }; |
65 | 67 |
66 } // namespace media | 68 } // namespace media |
67 | 69 |
68 #endif // MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_ | 70 #endif // MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_ |
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