handle Portamento MIDI CC-s

src/midi.h

@@ -30,11 +30,13 @@
 #define MIDI_CC_MODULATION		1
 #define MIDI_CC_BREATH_CONTROLLER	2 
 #define MIDI_CC_FOOT_PEDAL 		4
+#define MIDI_CC_PORTAMENTO_TIME		5
 #define MIDI_CC_VOLUME			7
 #define MIDI_CC_PAN_POSITION		10
 #define MIDI_CC_EXPRESSION		11
 #define MIDI_CC_BANK_SELECT_LSB		32
 #define MIDI_CC_BANK_SUSTAIN		64
+#define MIDI_CC_PORTAMENTO		65
 #define MIDI_CC_RESONANCE		71
 #define MIDI_CC_FREQUENCY_CUTOFF	74
 #define MIDI_CC_REVERB_LEVEL		91

src/mididevice.cpp

@@ -386,6 +386,10 @@ void CMIDIDevice::MIDIMessageHandler (const u8 *pMessage, size_t nLength, unsign
 							m_pSynthesizer->ControllersRefresh (nTG);
 							break;
 
+						case MIDI_CC_PORTAMENTO_TIME:
+							m_pSynthesizer->setPortamentoTime (maplong (pMessage[2], 0, 127, 0, 99), nTG);
+							break;
+
 						case MIDI_CC_BREATH_CONTROLLER:
 							m_pSynthesizer->setBreathController (pMessage[2], nTG);
 							m_pSynthesizer->ControllersRefresh (nTG);
@@ -418,6 +422,10 @@ void CMIDIDevice::MIDIMessageHandler (const u8 *pMessage, size_t nLength, unsign
 							m_pSynthesizer->setSustain (pMessage[2] >= 64, nTG);
 							break;
 		
+						case MIDI_CC_PORTAMENTO:
+							m_pSynthesizer->setPortamentoMode (pMessage[2] >= 64, nTG);
+							break;
+
 						case MIDI_CC_RESONANCE:
 							m_pSynthesizer->SetResonance (maplong (pMessage[2], 0, 127, 0, 99), nTG);
 							break;