public MidiDriver_TOWNS(IMixer mixer)
{
_baseTempo = 10080;
_rand = 1;
// We set exteral mutex handling to true to avoid lockups in SCUMM which has its own mutex.
_intf = new TownsAudioInterface(mixer, this, true);
_channels = new TownsMidiInputChannel[32];
for (int i = 0; i < 32; i++)
_channels[i] = new TownsMidiInputChannel(this, i > 8 ? (i + 1) : i);
_out = new TownsMidiOutputChannel[6];
for (int i = 0; i < 6; i++)
{
_out[i] = new TownsMidiOutputChannel(this, i);
}
_chanState = new TownsMidiChanState[32];
for (int i = 0; i < _chanState.Length; i++)
{
_chanState[i] = new TownsMidiChanState();
}
_operatorLevelTable = new byte[2048];
for (int i = 0; i < 64; i++)
{
for (int ii = 0; ii < 32; ii++)
_operatorLevelTable[(i << 5) + ii] = (byte)(((i * (ii + 1)) >> 5) & 0xff);
}
for (int i = 0; i < 64; i++)
_operatorLevelTable[i << 5] = 0;
}
public override void Send(int b)
{
if (!_isOpen)
{
return;
}
int param2 = ((b >> 16) & 0xFF);
byte param1 = (byte)((b >> 8) & 0xFF);
byte cmd = (byte)(b & 0xF0);
TownsMidiInputChannel c = _channels[b & 0x0F];
switch (cmd)
{
case 0x80:
c.NoteOff(param1);
break;
case 0x90:
if (param2 != 0)
{
c.NoteOn(param1, (byte)param2);
}
else
{
c.NoteOff(param1);
}
break;
case 0xB0:
c.ControlChange(param1, (byte)param2);
break;
case 0xC0:
c.ProgramChange(param1);
break;
case 0xE0:
c.PitchBend((short)((param1 | (param2 << 7)) - 0x2000));
break;
case 0xF0:
Debug.WriteLine("MidiDriver_TOWNS: Receiving SysEx command on a send() call");
break;
}
}
public override MidiChannel AllocateChannel()
{
if (!_isOpen)
{
return(null);
}
for (int i = 0; i < 32; ++i)
{
TownsMidiInputChannel chan = _channels[i];
if (chan.Allocate())
{
return(chan);
}
}
return(null);
}
public MidiDriver_TOWNS(IMixer mixer)
{
_baseTempo = 10080;
_rand = 1;
// We set exteral mutex handling to true to avoid lockups in SCUMM which has its own mutex.
_intf = new TownsAudioInterface(mixer, this, true);
_channels = new TownsMidiInputChannel[32];
for (int i = 0; i < 32; i++)
{
_channels[i] = new TownsMidiInputChannel(this, i > 8 ? (i + 1) : i);
}
_out = new TownsMidiOutputChannel[6];
for (int i = 0; i < 6; i++)
{
_out[i] = new TownsMidiOutputChannel(this, i);
}
_chanState = new TownsMidiChanState[32];
for (int i = 0; i < _chanState.Length; i++)
{
_chanState[i] = new TownsMidiChanState();
}
_operatorLevelTable = new byte[2048];
for (int i = 0; i < 64; i++)
{
for (int ii = 0; ii < 32; ii++)
{
_operatorLevelTable[(i << 5) + ii] = (byte)(((i * (ii + 1)) >> 5) & 0xff);
}
}
for (int i = 0; i < 64; i++)
{
_operatorLevelTable[i << 5] = 0;
}
}
