private int[] GetPlayingNoteRawChannels(int virtualChannel, PitchX pitch)
{
int noteKey = GetNoteKey(virtualChannel, pitch);
List <int> cs = null;
_playingNotes.TryGetValue(noteKey, out cs);
if (cs == null)
{
return new int[] { }
}
;
return(cs.ToArray());
}
private void SavePlayingNoteRawChannel(int virtualChannel, PitchX pitch, int rawChannel)
{
int noteKey = GetNoteKey(virtualChannel, pitch);
List <int> cs = null;
_playingNotes.TryGetValue(noteKey, out cs);
if (cs == null)
{
cs = new List <int>();
_playingNotes[noteKey] = cs;
}
cs.Add(rawChannel);
}
private void NoteOnRaw(int virtualChannel, float cents, int velocity = 0x7F)
{
PitchX pitch = GetPitchX(cents);
VirtualChannelState v;
int c; // zero-based raw channel index
bool setInstrument = false;
bool setBend = false;
lock (_channelStateLock)
{
v = _virtualChannels[virtualChannel];
c = FindRawChannel(virtualChannel, pitch);
RawChannelState r = _rawChannels[c];
Debug.WriteLine("NoteOnRaw v{0}->r{1} {2}({3}+{4:X})", virtualChannel, (int)c, cents, pitch.note, pitch.bend);
if (r.instrument != v.instrument)
{
r.instrument = v.instrument;
setInstrument = true;
}
if (r.bend != pitch.bend)
{
r.bend = pitch.bend;
setBend = true;
}
r.playingNotes += 1;
SavePlayingNoteRawChannel(virtualChannel, pitch, c);
_rawChannels[c] = r;
}
// Raw midi
if (setInstrument)
{
_device.SendPatchChange(channel: c + 1, v.instrument);
}
if (setBend)
{
_device.SendPitchWheelChange(channel: c + 1, pitch.bend);
}
_device.SendNoteOn(channel: c + 1, noteNumber: pitch.note, velocity);
}
private int GetPlayingNoteRawChannel(int virtualChannel, PitchX pitch, bool remove = true)
{
int noteKey = GetNoteKey(virtualChannel, pitch);
List <int> cs = null;
_playingNotes.TryGetValue(noteKey, out cs);
if (cs == null || cs.Count == 0)
{
throw new Exception("Playing note not found");
}
int rawChannel = cs[0];
if (remove)
{
cs.RemoveAt(0);
}
return(rawChannel);
}
private void NoteOffRaw(int virtualChannel, float cents, int velocity = 0x7F)
{
PitchX pitch = GetPitchX(cents);
int c;
lock (_channelStateLock)
{
c = GetPlayingNoteRawChannel(virtualChannel, pitch);
RawChannelState r = _rawChannels[c];
Debug.WriteLine("NoteOffRaw v{0}->r{1} {2}({3}+{4:X})", virtualChannel, (int)c, cents, pitch.note, pitch.bend);
r.playingNotes -= 1;
_rawChannels[c] = r;
}
// Raw midi
_device.SendNoteOff(channel: c + 1, noteNumber: pitch.note, velocity);
}
private int FindRawChannel(int virtualChannel, PitchX pitch) // _channelStateLock locked
{
int[] playingThisNote = GetPlayingNoteRawChannels(virtualChannel, pitch);
VirtualChannelState v = _virtualChannels[virtualChannel];
for (int ri = 0; ri < 16; ++ri)
{
if (playingThisNote.Contains(ri))
{
continue; // this note already played on this raw channel
}
RawChannelState r = _rawChannels[ri];
if (r.playingNotes == 0)
{
return(ri);
}
if (r.instrument == v.instrument && r.bend == pitch.bend)
{
return(ri);
}
}
throw new Exception("No free midi channel");
}
private static int GetNoteKey(int virtualChannel, PitchX pitch)
{
return((virtualChannel << 24) | ((int)pitch.note << 16) | (pitch.bend));
}
