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 TownsMidiOutputChannel AllocateOutputChannel(int pri)
{
TownsMidiOutputChannel res = null;
for (int i = 0; i < 6; i++)
{
if (++_allocCurPos == 6)
{
_allocCurPos = 0;
}
var s = _out[_allocCurPos].CheckPriority(pri);
if (s == (int)CheckPriorityStatus.Disconnected)
{
return(_out[_allocCurPos]);
}
if (s != (int)CheckPriorityStatus.HighPriority)
{
pri = (int)s;
res = _out[_allocCurPos];
}
}
if (res != null)
{
res.Disconnect();
}
return(res);
}
void ControlModulationWheel(byte value)
{
_modWheel = (sbyte)value;
for (TownsMidiOutputChannel oc = _out; oc != null; oc = oc._next)
{
oc.SetModWheel(value);
}
}
public override void PitchBendFactor(byte value)
{
_pitchBendFactor = value;
_freqLSB = (ushort)(((_pitchBend * _pitchBendFactor) >> 6) + _detune);
for (TownsMidiOutputChannel oc = _out; oc != null; oc = oc._next)
{
oc.NoteOnPitchBend((byte)(oc._note + oc._in._transpose), _freqLSB);
}
}
void ReleasePedal()
{
for (TownsMidiOutputChannel oc = _out; oc != null; oc = oc._next)
{
if (oc._sustainNoteOff != 0)
{
oc.Disconnect();
}
}
}
public override void NoteOn(byte note, byte velocity)
{
TownsMidiOutputChannel oc = _driver.AllocateOutputChannel(_priority);
if (oc == null)
{
return;
}
oc.Connect(this);
oc._adjustModTl = (byte)(_instrument[10] & 1);
oc._note = note;
oc._sustainNoteOff = 0;
oc._duration = (short)(_instrument[29] * 63);
oc._operator1Tl = (byte)((_instrument[1] & 0x3f) + _driver._operatorLevelTable[((velocity >> 1) << 5) + (_instrument[4] >> 2)]);
if (oc._operator1Tl > 63)
{
oc._operator1Tl = 63;
}
oc._operator2Tl = (byte)((_instrument[6] & 0x3f) + _driver._operatorLevelTable[((velocity >> 1) << 5) + (_instrument[9] >> 2)]);
if (oc._operator2Tl > 63)
{
oc._operator2Tl = 63;
}
oc.SetupProgram(_instrument, oc._adjustModTl == 1 ? _programAdjustLevel[_driver._operatorLevelTable[(_tl >> 2) + (oc._operator1Tl << 5)]] : oc._operator1Tl, _programAdjustLevel[_driver._operatorLevelTable[(_tl >> 2) + (oc._operator2Tl << 5)]]);
oc.NoteOn((byte)(note + _transpose), _freqLSB);
if ((_instrument[11] & 0x80) != 0)
{
oc.SetupEffects(0, _instrument[11], _instrument, 12);
}
else
{
oc._effectEnvelopes[0].state = EnvelopeState.Ready;
}
if ((_instrument[20] & 0x80) != 0)
{
oc.SetupEffects(1, _instrument[20], _instrument, 21);
}
else
{
oc._effectEnvelopes[1].state = EnvelopeState.Ready;
}
}
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 NoteOff(byte note)
{
if (_out == null)
{
return;
}
for (TownsMidiOutputChannel oc = _out; oc != null; oc = oc._next)
{
if (oc._note != note)
{
continue;
}
if (_sustain != 0)
{
oc._sustainNoteOff = 1;
}
else
{
oc.Disconnect();
}
}
}
