int PcmSetPitch(int chan, int pitch)
{
if (chan > 0x47)
{
return(1);
}
if (pitch < -8192 || pitch > 8191)
{
return(3);
}
chan -= 0x40;
TownsAudio_PcmChannel p = _pcmChan[chan];
uint pts = 0x4000;
if (pitch < 0)
{
pts = (uint)((0x20000000 / (-pitch + 0x2001)) >> 2);
}
else if (pitch > 0)
{
pts = (uint)((((pitch + 0x2001) << 16) / 0x2000) >> 2);
}
p.SetPitch(pts);
return(0);
}
int PcmKeyOn(int chan, int note, int velo)
{
if (chan < 0x40 || chan > 0x47)
{
return(1);
}
if (((note & 0x80) != 0) || ((velo & 0x80) != 0))
{
return(3);
}
chan -= 0x40;
byte noteT = (byte)note;
TownsAudio_PcmChannel p = _pcmChan[chan];
if (p._reserved || p._keyPressed)
{
return(2);
}
TownsAudio_WaveTable w;
int res = p.InitInstrument(ref noteT, _waveTables, _numWaveTables, out w);
if (res != 0)
{
return(res);
}
p.LoadData(w);
p.KeyOn(noteT, (byte)velo, w);
return(0);
}
public override bool Init()
{
if (_ready)
{
return(true);
}
if (!base.Init())
{
return(false);
}
_fmSaveReg[0] = new byte[256];
_fmSaveReg[1] = new byte[256];
_fmInstruments = new byte[128 * 48];
_pcmInstruments = new byte[32][];
_waveTables = new TownsAudio_WaveTable[128];
for (int i = 0; i < _waveTables.Length; i++)
{
_waveTables[i] = new TownsAudio_WaveTable();
}
_pcmChan = new TownsAudio_PcmChannel[8];
for (int i = 0; i < _pcmChan.Length; i++)
{
_pcmChan[i] = new TownsAudio_PcmChannel();
}
_timer = 0;
SetVolumeChannelMasks(-1, 0);
_ready = true;
Callback(0);
return(true);
}
public override bool Init()
{
if (_ready)
return true;
if (!base.Init())
return false;
_fmSaveReg[0] = new byte[256];
_fmSaveReg[1] = new byte[256];
_fmInstruments = new byte[128 * 48];
_pcmInstruments = new byte[32][];
_waveTables = new TownsAudio_WaveTable[128];
for (int i = 0; i < _waveTables.Length; i++)
{
_waveTables[i] = new TownsAudio_WaveTable();
}
_pcmChan = new TownsAudio_PcmChannel[8];
for (int i = 0; i < _pcmChan.Length; i++)
{
_pcmChan[i] = new TownsAudio_PcmChannel();
}
_timer = 0;
SetVolumeChannelMasks(-1, 0);
_ready = true;
Callback(0);
return true;
}
