63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
/* RageSoundMixBuffer - Simple audio mixing. */
|
|
|
|
#ifndef RAGE_SOUND_MIX_BUFFER_H
|
|
#define RAGE_SOUND_MIX_BUFFER_H
|
|
|
|
#include <cstdint>
|
|
|
|
class RageSoundMixBuffer
|
|
{
|
|
public:
|
|
RageSoundMixBuffer();
|
|
~RageSoundMixBuffer();
|
|
|
|
// See how many samples we can stuff into 2MB.
|
|
static constexpr size_t BUF_SIZE = 2 * 1024 * 1024 / sizeof(float);
|
|
|
|
// Mix the given buffer of samples.
|
|
void write( const float *pBuf, unsigned iSize, int iSourceStride = 1, int iDestStride = 1 );
|
|
|
|
// Extend the buffer as if write() was called with a buffer of silence.
|
|
void Extend( unsigned iSamples );
|
|
|
|
void read( std::int16_t *pBuf );
|
|
void read( float *pBuf );
|
|
void read_deinterlace( float **pBufs, int channels );
|
|
float *read() { return m_pMixbuf; }
|
|
unsigned size() const { return m_iBufUsed; }
|
|
void SetWriteOffset( int iOffset );
|
|
|
|
private:
|
|
float *m_pMixbuf;
|
|
std::uint64_t m_iBufSize; // actual allocated samples
|
|
std::uint64_t m_iBufUsed; // used samples
|
|
int m_iOffset;
|
|
};
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Copyright (c) 2002-2004 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.
|
|
*/
|