Glenn Maynard
104 lines
1.8 KiB
C++
104 lines
1.8 KiB
C++
#include "global.h"
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#include "RageSoundReader_Resample.h"
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RageSoundReader_Resample::RageSoundReader_Resample()
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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::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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}
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RageSoundReader_Resample::~RageSoundReader_Resample()
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{
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delete source;
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}
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void RageSoundReader_Resample::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::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::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::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::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::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::Copy() const
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{
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SoundReader *new_source = source->Copy();
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RageSoundReader_Resample *ret = new RageSoundReader_Resample;
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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 by the person(s) listed below. All rights reserved.
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* Glenn Maynard
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*/
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