// Convert an XMSample to OpenMPT's internal sample representation.
void XMSample::ConvertToMPT(ModSample &mptSmp) const
//--------------------------------------------------
{
mptSmp.Initialize(MOD_TYPE_XM);
// Volume
mptSmp.nVolume = vol * 4;
LimitMax(mptSmp.nVolume, uint16(256));
// Panning
mptSmp.nPan = pan;
mptSmp.uFlags = CHN_PANNING;
// Sample Frequency
mptSmp.nFineTune = finetune;
mptSmp.RelativeTone = relnote;
// Sample Length and Loops
mptSmp.nLength = length;
mptSmp.nLoopStart = loopStart;
mptSmp.nLoopEnd = mptSmp.nLoopStart + loopLength;
if((flags & XMSample::sample16Bit))
{
mptSmp.nLength /= 2;
mptSmp.nLoopStart /= 2;
mptSmp.nLoopEnd /= 2;
}
if((flags & XMSample::sampleStereo))
{
mptSmp.nLength /= 2;
mptSmp.nLoopStart /= 2;
mptSmp.nLoopEnd /= 2;
}
if((flags & (XMSample::sampleLoop | XMSample::sampleBidiLoop)) && mptSmp.nLoopStart < mptSmp.nLength && mptSmp.nLoopEnd > mptSmp.nLoopStart)
{
mptSmp.uFlags.set(CHN_LOOP);
if((flags & XMSample::sampleBidiLoop))
{
mptSmp.uFlags.set(CHN_PINGPONGLOOP);
}
}
mptSmp.SanitizeLoops();
strcpy(mptSmp.filename, "");
}
bool PrecomputeLoops(ModSample &smp, CSoundFile &sndFile, bool updateChannels)
//----------------------------------------------------------------------------
{
if(smp.nLength == 0 || smp.pSample == nullptr)
return false;
smp.SanitizeLoops();
// Update channels with possibly changed loop values
if(updateChannels)
{
UpdateLoopPoints(smp, sndFile);
}
if(smp.GetElementarySampleSize() == 2)
PrecomputeLoopsImpl<int16>(smp, sndFile);
else if(smp.GetElementarySampleSize() == 1)
PrecomputeLoopsImpl<int8>(smp, sndFile);
return true;
}
