bool QLCMIDIProtocol::midiToInput(uchar cmd, uchar data1, uchar data2,
uchar midiChannel, quint32* channel,
uchar* value)
{
/* Check if cmd is a MIDI COMMAND byte */
if (!MIDI_IS_CMD(cmd))
return false;
/** Use a special handler function for system common messages */
if (MIDI_IS_SYSCOMMON(cmd))
return midiSysCommonToInput(cmd, data1, data2, channel, value);
/* Check that the command came on the correct MIDI channel */
if (midiChannel <= 0xF && MIDI_CH(cmd) != midiChannel)
return false;
switch(MIDI_CMD(cmd))
{
case MIDI_NOTE_OFF:
*channel = CHANNEL_OFFSET_NOTE + quint32(data1);
*value = 0;
return true;
case MIDI_NOTE_ON:
*channel = CHANNEL_OFFSET_NOTE + quint32(data1);
*value = MIDI2DMX(data2);
return true;
case MIDI_NOTE_AFTERTOUCH:
*channel = CHANNEL_OFFSET_NOTE_AFTERTOUCH + quint32(data1);
*value = MIDI2DMX(data2);
return true;
case MIDI_CONTROL_CHANGE:
*channel = CHANNEL_OFFSET_CONTROL_CHANGE + quint32(data1);
*value = MIDI2DMX(data2);
return true;
case MIDI_PROGRAM_CHANGE:
*channel = CHANNEL_OFFSET_PROGRAM_CHANGE;
*value = MIDI2DMX(data1);
return true;
case MIDI_CHANNEL_AFTERTOUCH:
*channel = CHANNEL_OFFSET_CHANNEL_AFTERTOUCH;
*value = MIDI2DMX(data1);
return true;
case MIDI_PITCH_WHEEL:
*channel = CHANNEL_OFFSET_PITCH_WHEEL;
*value = MIDI2DMX(data2);
return true;
default:
return false;
}
}
static void MidiInProc(const MIDIPacketList* pktList, void* readProcRefCon,
void* srcConnRefCon)
{
Q_UNUSED(readProcRefCon);
CoreMidiInputDevice* self = static_cast<CoreMidiInputDevice*>(srcConnRefCon);
Q_ASSERT(self != 0);
// Go thru all packets in the midi packet list
const MIDIPacket* packet = &pktList->packet[0];
for (quint32 p = 0; p < pktList->numPackets && packet != NULL; ++p)
{
// Go thru all simultaneously-occurring messages in the packet
for (quint32 i = 0; i < packet->length && i < 256; ++i)
{
uchar cmd = 0;
uchar data1 = 0;
uchar data2 = 0;
quint32 channel = 0;
uchar value = 0;
// MIDI Command
cmd = packet->data[0];
if (!MIDI_IS_CMD(cmd))
continue; // Not a MIDI command. Skip to the next byte.
if (cmd == MIDI_SYSEX)
break; // Sysex reserves the whole packet. Not interested.
// 1 or 2 MIDI Data bytes
if (packet->length > (i + 1) && !MIDI_IS_CMD(packet->data[i + 1]))
{
data1 = packet->data[++i];
if (packet->length > (i + 1) && !MIDI_IS_CMD(packet->data[i + 1]))
data2 = packet->data[++i];
else
// no data2 ? Could be a Program Change, so act like Linux
// and give it a value
data2 = 127;
}
if (cmd >= MIDI_BEAT_CLOCK && cmd <= MIDI_BEAT_STOP)
{
if (self->processMBC(cmd) == false)
continue;
}
// Convert the data to QLC input channel & value
if (QLCMIDIProtocol::midiToInput(cmd, data1, data2, self->midiChannel(),
&channel, &value) == true)
{
self->emitValueChanged(channel, value);
// for MIDI beat clock signals,
// generate a synthetic release event
if (cmd >= MIDI_BEAT_CLOCK && cmd <= MIDI_BEAT_STOP)
self->emitValueChanged(channel, 0);
}
}
// Get the next packet in the packet list
packet = MIDIPacketNext(packet);
}
}