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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 MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ | 5 #ifndef MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ |
6 #define MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ | 6 #define MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/macros.h" | 10 #include "base/macros.h" |
11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
12 #include "base/time/time.h" | 12 #include "base/time/time.h" |
13 #include "media/base/audio_renderer_sink.h" | 13 #include "media/base/audio_renderer_sink.h" |
14 | 14 |
15 namespace base { | 15 namespace base { |
16 class SingleThreadTaskRunner; | 16 class SingleThreadTaskRunner; |
17 } | 17 } |
18 | 18 |
19 namespace media { | 19 namespace media { |
20 class AudioBus; | 20 class AudioBus; |
21 class ClocklessAudioSinkThread; | 21 class ClocklessAudioSinkThread; |
22 class OutputDevice; | |
23 | 22 |
24 // Implementation of an AudioRendererSink that consumes the audio as fast as | 23 // Implementation of an AudioRendererSink that consumes the audio as fast as |
25 // possible. This class does not support multiple Play()/Pause() events. | 24 // possible. This class does not support multiple Play()/Pause() events. |
26 class MEDIA_EXPORT ClocklessAudioSink | 25 class MEDIA_EXPORT ClocklessAudioSink |
27 : NON_EXPORTED_BASE(public AudioRendererSink) { | 26 : NON_EXPORTED_BASE(public AudioRendererSink) { |
28 public: | 27 public: |
29 ClocklessAudioSink(); | 28 ClocklessAudioSink(); |
30 | 29 |
31 // AudioRendererSink implementation. | 30 // AudioRendererSink implementation. |
32 void Initialize(const AudioParameters& params, | 31 void Initialize(const AudioParameters& params, |
33 RenderCallback* callback) override; | 32 RenderCallback* callback) override; |
34 void Start() override; | 33 void Start() override; |
35 void Stop() override; | 34 void Stop() override; |
36 void Pause() override; | 35 void Pause() override; |
37 void Play() override; | 36 void Play() override; |
38 bool SetVolume(double volume) override; | 37 bool SetVolume(double volume) override; |
39 OutputDevice* GetOutputDevice() override; | 38 OutputDeviceInfo GetOutputDeviceInfo() override; |
40 | 39 |
41 // Returns the time taken to consume all the audio. | 40 // Returns the time taken to consume all the audio. |
42 base::TimeDelta render_time() { return playback_time_; } | 41 base::TimeDelta render_time() { return playback_time_; } |
43 | 42 |
44 // Enables audio frame hashing. Must be called prior to Initialize(). | 43 // Enables audio frame hashing. Must be called prior to Initialize(). |
45 void StartAudioHashForTesting(); | 44 void StartAudioHashForTesting(); |
46 | 45 |
47 // Returns the hash of all audio frames seen since construction. | 46 // Returns the hash of all audio frames seen since construction. |
48 std::string GetAudioHashForTesting(); | 47 std::string GetAudioHashForTesting(); |
49 | 48 |
50 protected: | 49 protected: |
51 ~ClocklessAudioSink() override; | 50 ~ClocklessAudioSink() override; |
52 | 51 |
53 private: | 52 private: |
54 scoped_ptr<ClocklessAudioSinkThread> thread_; | 53 scoped_ptr<ClocklessAudioSinkThread> thread_; |
55 bool initialized_; | 54 bool initialized_; |
56 bool playing_; | 55 bool playing_; |
57 bool hashing_; | 56 bool hashing_; |
58 | 57 |
59 // Time taken in last set of Render() calls. | 58 // Time taken in last set of Render() calls. |
60 base::TimeDelta playback_time_; | 59 base::TimeDelta playback_time_; |
61 | 60 |
62 DISALLOW_COPY_AND_ASSIGN(ClocklessAudioSink); | 61 DISALLOW_COPY_AND_ASSIGN(ClocklessAudioSink); |
63 }; | 62 }; |
64 | 63 |
65 } // namespace media | 64 } // namespace media |
66 | 65 |
67 #endif // MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ | 66 #endif // MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ |
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