59 lines
1.2 KiB
C++
59 lines
1.2 KiB
C++
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//
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// Wave record class
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//
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#include "WaveRec.h"
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CWaveRec::CWaveRec()
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{
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::ZeroMemory( &wavefile, sizeof(wavefile) );
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fp = NULL;
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::CopyMemory( wavefile.tagRIFF, "RIFF", sizeof(wavefile.tagRIFF) );
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::CopyMemory( wavefile.tagTYPE, "WAVEfmt ", sizeof(wavefile.tagTYPE) );
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::CopyMemory( wavefile.tagDATA, "data", sizeof(wavefile.tagDATA) );
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wavefile.dwChunkOffset = 0x0010;
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wavefile.wCodingType = 0x0001;
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}
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CWaveRec::~CWaveRec()
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{
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if( fp )
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Stop();
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}
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void CWaveRec::Start( LPSTR szFile, INT nSample, INT nBits, BOOL bStereo )
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{
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if( fp )
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Stop();
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if( (fp = ::fopen( szFile, "wb" )) ) {
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wavefile.wChannel = bStereo?2:1;
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wavefile.dwSample = nSample;
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wavefile.wBits = nBits;
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wavefile.wBytesPerSample = (WORD)(nBits>>3)*wavefile.wChannel;
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wavefile.dwBytesPerSec = nSample*wavefile.wBytesPerSample;
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}
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}
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void CWaveRec::Stop()
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{
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if( fp ) {
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DWORD size = (DWORD)::ftell( fp );
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wavefile.dwFileSize = (DWORD)size-8;
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wavefile.dwDataSize = (DWORD)size-sizeof(WAVEFILE);
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::fseek( fp, 0, SEEK_SET );
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::fwrite( &wavefile, sizeof(WAVEFILE), 1, fp );
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::fclose( fp );
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fp = NULL;
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}
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}
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void CWaveRec::Out( LPVOID lpBuf, DWORD dwSize )
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{
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if( fp ) {
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::fwrite( lpBuf, dwSize, 1, fp );
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}
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}
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