//-----------------------------------------------------------------------------
// Purpose: reads the actual sample data and parses it
// Input : &walk - RIFF file
//-----------------------------------------------------------------------------
void CAudioSourceMemWave::ParseDataChunk( IterateRIFF &walk )
{
int size = walk.ChunkSize();
// create a buffer for the samples
m_pData = new char[size];
// load them into memory
walk.ChunkRead( m_pData );
if ( m_format == WAVE_FORMAT_PCM )
{
// number of samples loaded
m_sampleCount = size / m_sampleSize;
// some samples need to be converted
ConvertSamples( m_pData, m_sampleCount );
}
else if ( m_format == WAVE_FORMAT_ADPCM )
{
// The ADPCM mixers treat the wave source as a flat file of bytes.
m_sampleSize = 1;
// Since each "sample" is a byte (this is a flat file), the number of samples is the file size
m_sampleCount = size;
// file says 4, output is 16
m_bits = 16;
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : &walk -
//-----------------------------------------------------------------------------
void CSoundCombiner::ParseSentence( CSentence& sentence, IterateRIFF &walk )
{
CUtlBuffer buf( 0, 0, CUtlBuffer::TEXT_BUFFER );
buf.EnsureCapacity( walk.ChunkSize() );
walk.ChunkRead( buf.Base() );
buf.SeekPut( CUtlBuffer::SEEK_HEAD, walk.ChunkSize() );
sentence.InitFromDataChunk( buf.Base(), buf.TellPut() );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : &walk -
//-----------------------------------------------------------------------------
void CAudioSourceWave::ParseSentence( IterateRIFF &walk )
{
CUtlBuffer buf( 0, 0, true );
buf.EnsureCapacity( walk.ChunkSize() );
walk.ChunkRead( buf.Base() );
buf.SeekPut( CUtlBuffer::SEEK_HEAD, walk.ChunkSize() );
m_Sentence.InitFromDataChunk( buf.Base(), buf.TellPut() );
}
