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| 1 /* | 1 /* |
| 2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
| (...skipping 16 matching lines...) Expand all Loading... |
| 27 | 27 |
| 28 #include "platform/audio/AudioArray.h" | 28 #include "platform/audio/AudioArray.h" |
| 29 #include "platform/audio/AudioDSPKernel.h" | 29 #include "platform/audio/AudioDSPKernel.h" |
| 30 | 30 |
| 31 namespace blink { | 31 namespace blink { |
| 32 | 32 |
| 33 class PLATFORM_EXPORT AudioDelayDSPKernel : public AudioDSPKernel { | 33 class PLATFORM_EXPORT AudioDelayDSPKernel : public AudioDSPKernel { |
| 34 public: | 34 public: |
| 35 AudioDelayDSPKernel(double maxDelayTime, float sampleRate); | 35 AudioDelayDSPKernel(double maxDelayTime, float sampleRate); |
| 36 | 36 |
| 37 virtual void process(const float* source, float* destination, size_t framesT
oProcess) OVERRIDE; | 37 virtual void process(const float* source, float* destination, size_t framesT
oProcess) override; |
| 38 virtual void reset() OVERRIDE; | 38 virtual void reset() override; |
| 39 | 39 |
| 40 double maxDelayTime() const { return m_maxDelayTime; } | 40 double maxDelayTime() const { return m_maxDelayTime; } |
| 41 | 41 |
| 42 void setDelayFrames(double numberOfFrames) { m_desiredDelayFrames = numberOf
Frames; } | 42 void setDelayFrames(double numberOfFrames) { m_desiredDelayFrames = numberOf
Frames; } |
| 43 | 43 |
| 44 virtual double tailTime() const OVERRIDE; | 44 virtual double tailTime() const override; |
| 45 virtual double latencyTime() const OVERRIDE; | 45 virtual double latencyTime() const override; |
| 46 | 46 |
| 47 protected: | 47 protected: |
| 48 AudioDelayDSPKernel(AudioDSPKernelProcessor*, size_t processingSizeInFrames)
; | 48 AudioDelayDSPKernel(AudioDSPKernelProcessor*, size_t processingSizeInFrames)
; |
| 49 | 49 |
| 50 virtual bool hasSampleAccurateValues(); | 50 virtual bool hasSampleAccurateValues(); |
| 51 virtual void calculateSampleAccurateValues(float* delayTimes, size_t framesT
oProcess); | 51 virtual void calculateSampleAccurateValues(float* delayTimes, size_t framesT
oProcess); |
| 52 virtual double delayTime(float sampleRate); | 52 virtual double delayTime(float sampleRate); |
| 53 | 53 |
| 54 AudioFloatArray m_buffer; | 54 AudioFloatArray m_buffer; |
| 55 double m_maxDelayTime; | 55 double m_maxDelayTime; |
| 56 int m_writeIndex; | 56 int m_writeIndex; |
| 57 double m_currentDelayTime; | 57 double m_currentDelayTime; |
| 58 double m_smoothingRate; | 58 double m_smoothingRate; |
| 59 bool m_firstTime; | 59 bool m_firstTime; |
| 60 double m_desiredDelayFrames; | 60 double m_desiredDelayFrames; |
| 61 | 61 |
| 62 AudioFloatArray m_delayTimes; | 62 AudioFloatArray m_delayTimes; |
| 63 | 63 |
| 64 size_t bufferLengthForDelay(double delayTime, double sampleRate) const; | 64 size_t bufferLengthForDelay(double delayTime, double sampleRate) const; |
| 65 }; | 65 }; |
| 66 | 66 |
| 67 } // namespace blink | 67 } // namespace blink |
| 68 | 68 |
| 69 #endif // AudioDelayDSPKernel_h | 69 #endif // AudioDelayDSPKernel_h |
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