// NOTE : this function load regular delta packed sample data
// TODO : need to do loading of AD = 4-bit ADPCM-compressed sample data
public void readSampleDataFromStream(Stream stream)
{
sampleData.Clear();
float ampDivider = ((type & 0x10) != 0) ? 0.000030517578125f /* 1/32768 */ : 0.0078125f /* 1/128 */;
if (length > 0)
{
float oldValue = 0;
for (uint i = 0; i < length; i++)
{
float sampleValue;
sampleValue = ((type & 0x10) != 0) ? ModuleUtils.ReadSignedWordSwap(stream) : ModuleUtils.ReadSignedByte(stream);
oldValue += sampleValue * ampDivider;
if (oldValue < -1)
{
oldValue += 2;
}
else if (oldValue > 1)
{
oldValue -= 2;
}
sampleData.Add(oldValue * ModuleConst.SOUND_AMP);
}
}
}
