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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 // A fake implementation of AudioInputStream, useful for testing purpose. | 5 // A fake implementation of AudioInputStream, useful for testing purpose. |
6 | 6 |
7 #ifndef MEDIA_AUDIO_FAKE_AUDIO_INPUT_STREAM_H_ | 7 #ifndef MEDIA_AUDIO_FAKE_AUDIO_INPUT_STREAM_H_ |
8 #define MEDIA_AUDIO_FAKE_AUDIO_INPUT_STREAM_H_ | 8 #define MEDIA_AUDIO_FAKE_AUDIO_INPUT_STREAM_H_ |
9 | 9 |
10 #include <vector> | 10 #include <vector> |
11 | 11 |
12 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
13 #include "base/synchronization/lock.h" | 13 #include "base/synchronization/lock.h" |
14 #include "base/threading/thread.h" | 14 #include "base/threading/thread.h" |
15 #include "base/time/time.h" | 15 #include "base/time/time.h" |
16 #include "media/audio/audio_io.h" | 16 #include "media/audio/audio_io.h" |
17 #include "media/audio/audio_parameters.h" | 17 #include "media/audio/audio_parameters.h" |
18 | 18 |
19 namespace media { | 19 namespace media { |
20 | 20 |
21 class AudioBus; | 21 class AudioBus; |
22 class AudioManagerBase; | 22 class AudioManagerBase; |
23 | 23 |
24 class MEDIA_EXPORT FakeAudioInputStream | 24 class MEDIA_EXPORT FakeAudioInputStream |
25 : public AudioInputStream { | 25 : public AudioInputStream { |
26 public: | 26 public: |
27 static AudioInputStream* MakeFakeStream(AudioManagerBase* manager, | 27 static AudioInputStream* MakeFakeStream(AudioManagerBase* manager, |
28 const AudioParameters& params); | 28 const AudioParameters& params); |
29 | 29 |
30 virtual bool Open() override; | 30 bool Open() override; |
31 virtual void Start(AudioInputCallback* callback) override; | 31 void Start(AudioInputCallback* callback) override; |
32 virtual void Stop() override; | 32 void Stop() override; |
33 virtual void Close() override; | 33 void Close() override; |
34 virtual double GetMaxVolume() override; | 34 double GetMaxVolume() override; |
35 virtual void SetVolume(double volume) override; | 35 void SetVolume(double volume) override; |
36 virtual double GetVolume() override; | 36 double GetVolume() override; |
37 virtual bool IsMuted() override; | 37 bool IsMuted() override; |
38 virtual void SetAutomaticGainControl(bool enabled) override; | 38 void SetAutomaticGainControl(bool enabled) override; |
39 virtual bool GetAutomaticGainControl() override; | 39 bool GetAutomaticGainControl() override; |
40 | 40 |
41 // Generate one beep sound. This method is called by | 41 // Generate one beep sound. This method is called by |
42 // FakeVideoCaptureDevice to test audio/video synchronization. | 42 // FakeVideoCaptureDevice to test audio/video synchronization. |
43 // This is a static method because FakeVideoCaptureDevice is | 43 // This is a static method because FakeVideoCaptureDevice is |
44 // disconnected from an audio device. This means only one instance of | 44 // disconnected from an audio device. This means only one instance of |
45 // this class gets to respond, which is okay because we assume there's | 45 // this class gets to respond, which is okay because we assume there's |
46 // only one stream for this testing purpose. | 46 // only one stream for this testing purpose. |
47 // TODO(hclam): Make this non-static. To do this we'll need to fix | 47 // TODO(hclam): Make this non-static. To do this we'll need to fix |
48 // crbug.com/159053 such that video capture device is aware of audio | 48 // crbug.com/159053 such that video capture device is aware of audio |
49 // input stream. | 49 // input stream. |
50 static void BeepOnce(); | 50 static void BeepOnce(); |
51 | 51 |
52 private: | 52 private: |
53 FakeAudioInputStream(AudioManagerBase* manager, | 53 FakeAudioInputStream(AudioManagerBase* manager, |
54 const AudioParameters& params); | 54 const AudioParameters& params); |
55 | 55 |
56 virtual ~FakeAudioInputStream(); | 56 ~FakeAudioInputStream() override; |
57 | 57 |
58 void DoCallback(); | 58 void DoCallback(); |
59 | 59 |
60 AudioManagerBase* audio_manager_; | 60 AudioManagerBase* audio_manager_; |
61 AudioInputCallback* callback_; | 61 AudioInputCallback* callback_; |
62 scoped_ptr<uint8[]> buffer_; | 62 scoped_ptr<uint8[]> buffer_; |
63 int buffer_size_; | 63 int buffer_size_; |
64 AudioParameters params_; | 64 AudioParameters params_; |
65 const scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | 65 const scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
66 base::TimeTicks last_callback_time_; | 66 base::TimeTicks last_callback_time_; |
67 base::TimeDelta callback_interval_; | 67 base::TimeDelta callback_interval_; |
68 base::TimeDelta interval_from_last_beep_; | 68 base::TimeDelta interval_from_last_beep_; |
69 int beep_duration_in_buffers_; | 69 int beep_duration_in_buffers_; |
70 int beep_generated_in_buffers_; | 70 int beep_generated_in_buffers_; |
71 int beep_period_in_frames_; | 71 int beep_period_in_frames_; |
72 int frames_elapsed_; | 72 int frames_elapsed_; |
73 scoped_ptr<media::AudioBus> audio_bus_; | 73 scoped_ptr<media::AudioBus> audio_bus_; |
74 | 74 |
75 // Allows us to run tasks on the FakeAudioInputStream instance which are | 75 // Allows us to run tasks on the FakeAudioInputStream instance which are |
76 // bound by its lifetime. | 76 // bound by its lifetime. |
77 base::WeakPtrFactory<FakeAudioInputStream> weak_factory_; | 77 base::WeakPtrFactory<FakeAudioInputStream> weak_factory_; |
78 | 78 |
79 DISALLOW_COPY_AND_ASSIGN(FakeAudioInputStream); | 79 DISALLOW_COPY_AND_ASSIGN(FakeAudioInputStream); |
80 }; | 80 }; |
81 | 81 |
82 } // namespace media | 82 } // namespace media |
83 | 83 |
84 #endif // MEDIA_AUDIO_FAKE_AUDIO_INPUT_STREAM_H_ | 84 #endif // MEDIA_AUDIO_FAKE_AUDIO_INPUT_STREAM_H_ |
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