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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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_BUFFER_CONVERTER | 5 #ifndef MEDIA_BASE_AUDIO_BUFFER_CONVERTER |
| 6 #define MEDIA_BASE_AUDIO_BUFFER_CONVERTER | 6 #define MEDIA_BASE_AUDIO_BUFFER_CONVERTER |
| 7 | 7 |
| 8 #include <deque> | 8 #include <deque> |
| 9 | 9 |
| 10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
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| 35 // This should only be called this is HasNextBuffer() returns true. | 35 // This should only be called this is HasNextBuffer() returns true. |
| 36 scoped_refptr<AudioBuffer> GetNextBuffer(); | 36 scoped_refptr<AudioBuffer> GetNextBuffer(); |
| 37 | 37 |
| 38 // Reset internal state. | 38 // Reset internal state. |
| 39 void Reset(); | 39 void Reset(); |
| 40 | 40 |
| 41 // Reset internal timestamp state. Upon the next AddInput() call, our base | 41 // Reset internal timestamp state. Upon the next AddInput() call, our base |
| 42 // timestamp will be set to match the input buffer. | 42 // timestamp will be set to match the input buffer. |
| 43 void ResetTimestampState(); | 43 void ResetTimestampState(); |
| 44 | 44 |
| 45 int input_buffer_size_for_testing() const { |
| 46 return input_params_.frames_per_buffer(); |
| 47 } |
| 48 int input_frames_left_for_testing() const { |
| 49 return input_frames_; |
| 50 } |
| 51 |
| 45 private: | 52 private: |
| 46 // Callback to provide data to the AudioConverter | 53 // Callback to provide data to the AudioConverter |
| 47 virtual double ProvideInput(AudioBus* audio_bus, | 54 virtual double ProvideInput(AudioBus* audio_bus, |
| 48 base::TimeDelta buffer_delay) OVERRIDE; | 55 base::TimeDelta buffer_delay) OVERRIDE; |
| 49 | 56 |
| 50 // Reset the converter in response to a configuration change. | 57 // Reset the converter in response to a configuration change. |
| 51 void ResetConverter(const scoped_refptr<AudioBuffer>& input_buffer); | 58 void ResetConverter(const scoped_refptr<AudioBuffer>& input_buffer); |
| 52 | 59 |
| 53 // Perform conversion if we have enough data. | 60 // Perform conversion if we have enough data. |
| 54 void ConvertIfPossible(); | 61 void ConvertIfPossible(); |
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| 92 // full AudioBuses in ProvideInput()? | 99 // full AudioBuses in ProvideInput()? |
| 93 bool is_flushing_; | 100 bool is_flushing_; |
| 94 | 101 |
| 95 // The AudioConverter which does the real work here. | 102 // The AudioConverter which does the real work here. |
| 96 scoped_ptr<AudioConverter> audio_converter_; | 103 scoped_ptr<AudioConverter> audio_converter_; |
| 97 }; | 104 }; |
| 98 | 105 |
| 99 } // namespace media | 106 } // namespace media |
| 100 | 107 |
| 101 #endif // MEDIA_BASE_AUDIO_BUFFER_CONVERTER | 108 #endif // MEDIA_BASE_AUDIO_BUFFER_CONVERTER |
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