/// <summary>
///
/// </summary>
/// <param name="offset"></param>
private void loadPcm(int offset, bool drum)
{
var sf2 = new SF2(openFileDialog.FileName);
var spl = sf2.SoundChunk.SMPLSubChunk.Samples;
int tn = 0;
int num = 0;
foreach (var s in sf2.HydraChunk.SHDRSubChunk.Samples)
{
if (s.SampleType == SF2SampleLink.MonoSample ||
s.SampleType == SF2SampleLink.LeftSample)
{
var tim = new C140Timbre();
double baseFreq = 440.0 * Math.Pow(2.0, ((double)s.OriginalKey - 69.0) / 12.0);
tim.BaseFreqency = baseFreq;
tim.SampleRate = s.SampleRate;
uint start = s.Start;
uint end = s.End;
if (s.LoopEnd < end && s.LoopStart < s.LoopEnd)
{
end = s.LoopEnd;
}
uint len = end - start + 1;
if (len > 65535)
{
len = 65535;
}
uint loopP = s.LoopStart - s.Start;
if (loopP > 65535)
{
loopP = 65535;
}
sbyte[] samples = new sbyte[len];
for (uint i = 0; i < len; i++)
{
samples[i] = (sbyte)(spl[start + i] >> 8);
}
tim.PcmData = samples;
tim.LoopPoint = (ushort)loopP;
tim.LoopEnable = s.LoopStart < s.LoopEnd;
if (s.LoopStart < s.LoopEnd)
{
tim.SDS.ADSR.Enable = true;
tim.SDS.ADSR.DR = 80;
tim.SDS.ADSR.SL = 127;
}
if (drum)
{
DrumTimbres[tn].TimbreNumber = (ProgramAssignmentNumber)(tn + offset);
DrumTimbres[tn].BaseNote =
(NoteNames)(byte)Math.Round(MidiManager.CalcNoteNumberFromFrequency(tim.BaseFreqency));
}
Timbres[tn + offset] = tim;
num++;
var nidx = s.SampleName.IndexOf('\0');
if (nidx >= 0)
{
tim.TimbreName = s.SampleName.Substring(0, nidx);
}
else
{
tim.TimbreName = s.SampleName;
}
tn++;
if (tn == 128)
{
break;
}
}
}
}