Glenn Maynard
126 lines
3.1 KiB
C++
126 lines
3.1 KiB
C++
#include "global.h"
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#include "RageSoundReader_Resample_Fast.h"
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RageSoundReader_Resample_Fast::RageSoundReader_Resample_Fast()
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{
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source = NULL;
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samplerate = -1;
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}
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void RageSoundReader_Resample_Fast::Open(SoundReader *source_)
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{
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source = source_;
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ASSERT(source);
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samplerate = source->GetSampleRate();
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resamp.SetInputSampleRate(samplerate);
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resamp.SetChannels( source->GetNumChannels() );
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}
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RageSoundReader_Resample_Fast::~RageSoundReader_Resample_Fast()
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{
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delete source;
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}
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void RageSoundReader_Resample_Fast::SetSampleRate(int hz)
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{
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samplerate = hz;
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resamp.SetOutputSampleRate(samplerate);
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}
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int RageSoundReader_Resample_Fast::GetLength() const
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{
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resamp.reset();
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return source->GetLength();
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}
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int RageSoundReader_Resample_Fast::GetLength_Fast() const
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{
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resamp.reset();
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return source->GetLength_Fast();
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}
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int RageSoundReader_Resample_Fast::SetPosition_Accurate(int ms)
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{
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resamp.reset();
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return source->SetPosition_Accurate(ms);
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}
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int RageSoundReader_Resample_Fast::SetPosition_Fast(int ms)
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{
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resamp.reset();
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return source->SetPosition_Fast(ms);
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}
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static const int BUFSIZE = 1024*16;
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int RageSoundReader_Resample_Fast::Read(char *buf, unsigned len)
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{
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int bytes_read = 0;
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while(len)
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{
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int size = resamp.read(buf, len);
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if(size == -1)
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break;
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buf += size;
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len -= size;
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bytes_read += size;
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if(size == 0)
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{
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static char buf[BUFSIZE];
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int cnt = source->Read(buf, sizeof(buf));
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if(cnt == -1)
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{
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SetError(source->GetError());
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return -1;
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}
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if(cnt == 0)
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resamp.eof();
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else
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resamp.write(buf, cnt);
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}
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}
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return bytes_read;
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}
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SoundReader *RageSoundReader_Resample_Fast::Copy() const
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{
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SoundReader *new_source = source->Copy();
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RageSoundReader_Resample_Fast *ret = new RageSoundReader_Resample_Fast;
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ret->Open(new_source);
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ret->SetSampleRate(samplerate);
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return ret;
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}
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/*
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* Copyright (c) 2003 Glenn Maynard
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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