public void StartPCM(SWAVInfo wave, int noteLength)
{
Type = InstrumentType.PCM;
dataOffset = 0;
this.wave = wave;
if (wave.Format == SWAVFormat.ADPCM)
{
adpcmDecoder = new ADPCMDecoder(wave.Samples);
}
BaseTimer = wave.Timer;
Start(noteLength);
}
public void PlayNote(Track track, byte key, byte noteVelocity, int noteLength)
{
Channel channel = null;
if (track.Tie && track.Channels.Count != 0)
{
channel = track.Channels.Last();
channel.Key = key;
channel.NoteVelocity = noteVelocity;
}
else
{
InstrumentData inst = sbnk.GetInstrumentData(track.Voice, key);
if (inst != null)
{
channel = SoundMixer.Instance.AllocateChannel(inst.Type, track);
if (channel != null)
{
if (track.Tie)
{
noteLength = -1;
}
int release = inst.Param.Release;
if (release == 0xFF)
{
noteLength = -1;
release = 0;
}
bool started = false;
switch (inst.Type)
{
case InstrumentType.PCM:
{
SWAVInfo wave = sbnk.GetWave(inst.Param.Info[1], inst.Param.Info[0]);
if (wave != null)
{
channel.StartPCM(wave, noteLength);
started = true;
}
break;
}
case InstrumentType.PSG:
{
channel.StartPSG((byte)inst.Param.Info[0], noteLength);
started = true;
break;
}
case InstrumentType.Noise:
{
channel.StartNoise(noteLength);
started = true;
break;
}
}
channel.Stop();
if (started)
{
channel.Key = key;
channel.BaseKey = inst.Param.BaseKey;
channel.NoteVelocity = noteVelocity;
channel.SetAttack(inst.Param.Attack);
channel.SetDecay(inst.Param.Decay);
channel.SetSustain(inst.Param.Sustain);
channel.SetRelease(release);
channel.StartingPan = (sbyte)(inst.Param.Pan - 0x40);
channel.Owner = track;
track.Channels.Add(channel);
}
else
{
return;
}
}
}
}
if (channel != null)
{
if (track.Attack != 0xFF)
{
channel.SetAttack(track.Attack);
}
if (track.Decay != 0xFF)
{
channel.SetDecay(track.Decay);
}
if (track.Sustain != 0xFF)
{
channel.SetSustain(track.Sustain);
}
if (track.Release != 0xFF)
{
channel.SetRelease(track.Release);
}
channel.SweepPitch = track.SweepPitch;
if (track.Portamento)
{
channel.SweepPitch += (short)((track.PortamentoKey - key) << 6); // "<< 6" is "* 0x40"
}
if (track.PortamentoTime != 0)
{
channel.SweepLength = (track.PortamentoTime * track.PortamentoTime * Math.Abs(channel.SweepPitch)) >> 11; // ">> 11" is "/ 0x800"
channel.AutoSweep = true;
}
else
{
channel.SweepLength = noteLength;
channel.AutoSweep = false;
}
channel.SweepCounter = 0;
}
}
