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audacity/src/RingBuffer.h
Paul Licameli 6dca4f7859 Possibly correct some cases of clicky playback or corrupt recording...
... By reusing portaudio's ring buffer class, which has more safe
inter-thread synchronization with memory fences
2018-03-17 23:44:50 -04:00

52 lines
1.1 KiB
C++

/**********************************************************************
Audacity: A Digital Audio Editor
RingBuffer.h
Dominic Mazzoni
*******************************************************************/
#ifndef __AUDACITY_RING_BUFFER__
#define __AUDACITY_RING_BUFFER__
#include "SampleFormat.h"
#include "../lib-src/portaudio-v19/src/common/pa_ringbuffer.h"
class RingBuffer {
public:
RingBuffer(sampleFormat format, size_t size);
~RingBuffer();
//
// For the writer only:
//
size_t AvailForPut();
size_t Put(samplePtr buffer, sampleFormat format, size_t samples);
// size_t Clear(sampleFormat format, size_t samples);
//
// For the reader only:
//
size_t AvailForGet();
size_t Get(samplePtr buffer, sampleFormat format, size_t samples);
size_t Discard(size_t samples);
private:
size_t Len();
sampleFormat mFormat;
size_t mStart { 0 };
size_t mEnd { 0 };
size_t mBufferSize;
SampleBuffer mBuffer;
PaUtilRingBuffer mRingBuffer;
};
#endif /* __AUDACITY_RING_BUFFER__ */