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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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_FILTERS_REFERENCE_AUDIO_RENDERER_H_ | 5 #ifndef MEDIA_FILTERS_REFERENCE_AUDIO_RENDERER_H_ |
6 #define MEDIA_FILTERS_REFERENCE_AUDIO_RENDERER_H_ | 6 #define MEDIA_FILTERS_REFERENCE_AUDIO_RENDERER_H_ |
7 | 7 |
8 // This is the reference implementation of AudioRenderer, which uses the audio | 8 // This is the reference implementation of AudioRenderer, which uses the audio |
9 // interfaces to open an audio device. It cannot be used in the sandbox, but is | 9 // interfaces to open an audio device. It cannot be used in the sandbox, but is |
10 // used in other applications such as the test player. | 10 // used in other applications such as the test player. |
11 // | 11 // |
12 // Note: THIS IS NOT THE AUDIO RENDERER USED IN CHROME. | 12 // Note: THIS IS NOT THE AUDIO RENDERER USED IN CHROME. |
13 // | 13 // |
14 // See src/chrome/renderer/media/audio_renderer_impl.h for chrome's | 14 // See src/content/renderer/media/audio_renderer_impl.h for chrome's |
15 // implementation. | 15 // implementation. |
16 | 16 |
17 #include <deque> | 17 #include "media/audio/audio_output_controller.h" |
18 | |
19 #include "media/audio/audio_io.h" | |
20 #include "media/base/buffers.h" | |
21 #include "media/base/filters.h" | |
22 #include "media/filters/audio_renderer_base.h" | 18 #include "media/filters/audio_renderer_base.h" |
23 | 19 |
24 namespace media { | 20 namespace media { |
25 | 21 |
26 class MEDIA_EXPORT ReferenceAudioRenderer | 22 class MEDIA_EXPORT ReferenceAudioRenderer |
27 : public AudioRendererBase, | 23 : public AudioRendererBase, |
28 public AudioOutputStream::AudioSourceCallback { | 24 public AudioOutputController::EventHandler { |
29 public: | 25 public: |
30 ReferenceAudioRenderer(); | 26 ReferenceAudioRenderer(); |
31 virtual ~ReferenceAudioRenderer(); | 27 virtual ~ReferenceAudioRenderer(); |
32 | 28 |
33 // Filter implementation. | 29 // Filter implementation. |
34 virtual void SetPlaybackRate(float playback_rate) OVERRIDE; | 30 virtual void SetPlaybackRate(float playback_rate) OVERRIDE; |
35 | 31 |
36 // AudioRenderer implementation. | 32 // AudioRenderer implementation. |
37 virtual void SetVolume(float volume) OVERRIDE; | 33 virtual void SetVolume(float volume) OVERRIDE; |
38 | 34 |
39 // AudioSourceCallback implementation. | 35 // AudioController::EventHandler implementation. |
40 virtual uint32 OnMoreData(AudioOutputStream* stream, uint8* dest, | 36 virtual void OnCreated(AudioOutputController* controller) OVERRIDE; |
41 uint32 len, | 37 virtual void OnPlaying(AudioOutputController* controller) OVERRIDE; |
42 AudioBuffersState buffers_state) OVERRIDE; | 38 virtual void OnPaused(AudioOutputController* controller) OVERRIDE; |
43 virtual void OnClose(AudioOutputStream* stream); | 39 virtual void OnError(AudioOutputController* controller, |
44 virtual void OnError(AudioOutputStream* stream, int code) OVERRIDE; | 40 int error_code) OVERRIDE; |
| 41 virtual void OnMoreData(AudioOutputController* controller, |
| 42 AudioBuffersState buffers_state) OVERRIDE; |
45 | 43 |
46 protected: | 44 protected: |
47 // AudioRendererBase implementation. | 45 // AudioRendererBase implementation. |
48 virtual bool OnInitialize(int bits_per_channel, | 46 virtual bool OnInitialize(int bits_per_channel, |
49 ChannelLayout channel_layout, | 47 ChannelLayout channel_layout, |
50 int sample_rate) OVERRIDE; | 48 int sample_rate) OVERRIDE; |
51 virtual void OnStop() OVERRIDE; | 49 virtual void OnStop() OVERRIDE; |
52 | 50 |
53 private: | 51 private: |
54 // Audio output stream device. | |
55 AudioOutputStream* stream_; | |
56 int bytes_per_second_; | 52 int bytes_per_second_; |
57 | 53 |
| 54 // AudioOutputController::Close callback. |
| 55 virtual void OnClose(); |
| 56 |
| 57 // Audio output controller. |
| 58 scoped_refptr<media::AudioOutputController> controller_; |
| 59 |
| 60 // Audio buffer. |
| 61 int buffer_capacity_; |
| 62 scoped_array<uint8> buffer_; |
| 63 |
58 DISALLOW_COPY_AND_ASSIGN(ReferenceAudioRenderer); | 64 DISALLOW_COPY_AND_ASSIGN(ReferenceAudioRenderer); |
59 }; | 65 }; |
60 | 66 |
61 } // namespace media | 67 } // namespace media |
62 | 68 |
63 #endif // MEDIA_FILTERS_REFERENCE_AUDIO_RENDERER_H_ | 69 #endif // MEDIA_FILTERS_REFERENCE_AUDIO_RENDERER_H_ |
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