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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_AUDIO_SIMPLE_SOURCES_H_ | 5 #ifndef MEDIA_AUDIO_SIMPLE_SOURCES_H_ |
6 #define MEDIA_AUDIO_SIMPLE_SOURCES_H_ | 6 #define MEDIA_AUDIO_SIMPLE_SOURCES_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
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30 ~SineWaveAudioSource() override; | 30 ~SineWaveAudioSource() override; |
31 | 31 |
32 // Return up to |cap| samples of data via OnMoreData(). Use Reset() to | 32 // Return up to |cap| samples of data via OnMoreData(). Use Reset() to |
33 // allow more data to be served. | 33 // allow more data to be served. |
34 void CapSamples(int cap); | 34 void CapSamples(int cap); |
35 void Reset(); | 35 void Reset(); |
36 | 36 |
37 // Implementation of AudioSourceCallback. | 37 // Implementation of AudioSourceCallback. |
38 int OnMoreData(AudioBus* audio_bus, | 38 int OnMoreData(AudioBus* audio_bus, |
39 uint32_t total_bytes_delay, | 39 uint32_t total_bytes_delay, |
40 uint32_t frames_skipped) override; | 40 uint32_t frames_skipped, |
| 41 const AudioTimestamp& timestamp = AudioTimestamp()) override; |
41 void OnError(AudioOutputStream* stream) override; | 42 void OnError(AudioOutputStream* stream) override; |
42 | 43 |
43 // The number of OnMoreData() and OnError() calls respectively. | 44 // The number of OnMoreData() and OnError() calls respectively. |
44 int callbacks() { return callbacks_; } | 45 int callbacks() { return callbacks_; } |
45 int errors() { return errors_; } | 46 int errors() { return errors_; } |
46 | 47 |
47 protected: | 48 protected: |
48 int channels_; | 49 int channels_; |
49 double f_; | 50 double f_; |
50 int time_state_; | 51 int time_state_; |
51 int cap_; | 52 int cap_; |
52 int callbacks_; | 53 int callbacks_; |
53 int errors_; | 54 int errors_; |
54 base::Lock time_lock_; | 55 base::Lock time_lock_; |
55 }; | 56 }; |
56 | 57 |
57 class MEDIA_EXPORT FileSource : public AudioOutputStream::AudioSourceCallback, | 58 class MEDIA_EXPORT FileSource : public AudioOutputStream::AudioSourceCallback, |
58 public AudioConverter::InputCallback { | 59 public AudioConverter::InputCallback { |
59 public: | 60 public: |
60 FileSource(const AudioParameters& params, | 61 FileSource(const AudioParameters& params, |
61 const base::FilePath& path_to_wav_file, | 62 const base::FilePath& path_to_wav_file, |
62 bool loop); | 63 bool loop); |
63 ~FileSource() override; | 64 ~FileSource() override; |
64 | 65 |
65 // Implementation of AudioSourceCallback. | 66 // Implementation of AudioSourceCallback. |
66 int OnMoreData(AudioBus* audio_bus, | 67 int OnMoreData(AudioBus* audio_bus, |
67 uint32_t total_bytes_delay, | 68 uint32_t total_bytes_delay, |
68 uint32_t frames_skipped) override; | 69 uint32_t frames_skipped, |
| 70 const AudioTimestamp& timestamp = AudioTimestamp()) override; |
69 void OnError(AudioOutputStream* stream) override; | 71 void OnError(AudioOutputStream* stream) override; |
70 | 72 |
71 private: | 73 private: |
72 AudioParameters params_; | 74 AudioParameters params_; |
73 base::FilePath path_to_wav_file_; | 75 base::FilePath path_to_wav_file_; |
74 | 76 |
75 // The WAV data at |path_to_wav_file_| is read into memory and kept here. | 77 // The WAV data at |path_to_wav_file_| is read into memory and kept here. |
76 // This memory needs to survive for the lifetime of |wav_audio_handler_|, | 78 // This memory needs to survive for the lifetime of |wav_audio_handler_|, |
77 // so declare it first. Do not access this member directly. | 79 // so declare it first. Do not access this member directly. |
78 std::unique_ptr<char[]> raw_wav_data_; | 80 std::unique_ptr<char[]> raw_wav_data_; |
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94 }; | 96 }; |
95 | 97 |
96 class BeepingSource : public AudioOutputStream::AudioSourceCallback { | 98 class BeepingSource : public AudioOutputStream::AudioSourceCallback { |
97 public: | 99 public: |
98 BeepingSource(const AudioParameters& params); | 100 BeepingSource(const AudioParameters& params); |
99 ~BeepingSource() override; | 101 ~BeepingSource() override; |
100 | 102 |
101 // Implementation of AudioSourceCallback. | 103 // Implementation of AudioSourceCallback. |
102 int OnMoreData(AudioBus* audio_bus, | 104 int OnMoreData(AudioBus* audio_bus, |
103 uint32_t total_bytes_delay, | 105 uint32_t total_bytes_delay, |
104 uint32_t frames_skipped) override; | 106 uint32_t frames_skipped, |
| 107 const AudioTimestamp& timestamp) override; |
105 void OnError(AudioOutputStream* stream) override; | 108 void OnError(AudioOutputStream* stream) override; |
106 | 109 |
107 static void BeepOnce(); | 110 static void BeepOnce(); |
108 private: | 111 private: |
109 int buffer_size_; | 112 int buffer_size_; |
110 std::unique_ptr<uint8_t[]> buffer_; | 113 std::unique_ptr<uint8_t[]> buffer_; |
111 AudioParameters params_; | 114 AudioParameters params_; |
112 base::TimeTicks last_callback_time_; | 115 base::TimeTicks last_callback_time_; |
113 base::TimeDelta interval_from_last_beep_; | 116 base::TimeDelta interval_from_last_beep_; |
114 int beep_duration_in_buffers_; | 117 int beep_duration_in_buffers_; |
115 int beep_generated_in_buffers_; | 118 int beep_generated_in_buffers_; |
116 int beep_period_in_frames_; | 119 int beep_period_in_frames_; |
117 }; | 120 }; |
118 | 121 |
119 } // namespace media | 122 } // namespace media |
120 | 123 |
121 #endif // MEDIA_AUDIO_SIMPLE_SOURCES_H_ | 124 #endif // MEDIA_AUDIO_SIMPLE_SOURCES_H_ |
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