sukibaby
108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
/* RageSoundReader_ThreadedBuffer - Buffer sounds into memory. */
|
|
|
|
#ifndef RAGE_SOUND_READER_THREADED_BUFFER
|
|
#define RAGE_SOUND_READER_THREADED_BUFFER
|
|
|
|
#include "RageSoundReader_Filter.h"
|
|
#include "RageUtil_CircularBuffer.h"
|
|
#include "RageThreads.h"
|
|
#include <list>
|
|
|
|
class RageThread;
|
|
class RageSoundReader_ThreadedBuffer: public RageSoundReader_Filter
|
|
{
|
|
public:
|
|
RageSoundReader_ThreadedBuffer( RageSoundReader *pSource );
|
|
RageSoundReader_ThreadedBuffer( const RageSoundReader_ThreadedBuffer &cpy );
|
|
~RageSoundReader_ThreadedBuffer();
|
|
RageSoundReader_ThreadedBuffer *Copy() const { return new RageSoundReader_ThreadedBuffer(*this); }
|
|
|
|
virtual int SetPosition( int iFrame );
|
|
virtual int Read( float *pBuffer, int iLength );
|
|
virtual int GetNextSourceFrame() const;
|
|
|
|
virtual int GetLength() const;
|
|
virtual int GetLength_Fast() const;
|
|
virtual int GetSampleRate() const { return m_iSampleRate; }
|
|
virtual unsigned GetNumChannels() const { return m_iChannels; }
|
|
virtual bool SetProperty( const RString &sProperty, float fValue );
|
|
virtual float GetStreamToSourceRatio() const;
|
|
virtual RageSoundReader *GetSource() { return nullptr; }
|
|
|
|
/* Enable and disable threaded buffering. Disable buffering before accessing
|
|
* the underlying sound. DisableBuffering returns true if buffering was enabled. */
|
|
void EnableBuffering();
|
|
void EnableBuffering() const { const_cast<RageSoundReader_ThreadedBuffer *>(this)->EnableBuffering(); }
|
|
bool DisableBuffering();
|
|
bool DisableBuffering() const { return const_cast<RageSoundReader_ThreadedBuffer *>(this)->DisableBuffering(); }
|
|
|
|
private:
|
|
int FillFrames( int iBytes );
|
|
int FillBlock();
|
|
int GetFilledFrames() const;
|
|
int GetEmptyFrames() const;
|
|
void WaitUntilFrames( int iWaitUntilFrames );
|
|
|
|
int m_iSampleRate;
|
|
int m_iChannels;
|
|
|
|
CircBuf<float> m_DataBuffer;
|
|
|
|
struct Mapping
|
|
{
|
|
int iFramesBuffered;
|
|
int iPositionOfFirstFrame;
|
|
float fRate;
|
|
Mapping(): iFramesBuffered(0), iPositionOfFirstFrame(0),
|
|
fRate(1.0f) {}
|
|
};
|
|
std::list<Mapping> m_StreamPosition;
|
|
|
|
bool m_bEOF;
|
|
|
|
bool m_bEnabled;
|
|
|
|
/* If this is true, the buffering thread owns m_pSource, even
|
|
* if m_Event is unlocked. */
|
|
bool m_bFilling;
|
|
|
|
mutable RageEvent m_Event;
|
|
|
|
RageThread m_Thread;
|
|
bool m_bShutdownThread;
|
|
static int StartBufferingThread(void* p)
|
|
{
|
|
((RageSoundReader_ThreadedBuffer*)p)->BufferingThread();
|
|
return 0;
|
|
}
|
|
|
|
void BufferingThread();
|
|
};
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Copyright (c) 2006 Glenn Maynard
|
|
* All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, and/or sell copies of the Software, and to permit persons to
|
|
* whom the Software is furnished to do so, provided that the above
|
|
* copyright notice(s) and this permission notice appear in all copies of
|
|
* the Software and that both the above copyright notice(s) and this
|
|
* permission notice appear in supporting documentation.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
|
|
* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
|
|
* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
|
|
* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
|
|
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
|
|
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
* PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|