InstrumentTrack, NotePlayHandled: added initial sustain pedal support

include/InstrumentTrack.h

@@ -2,7 +2,7 @@
  * InstrumentTrack.h - declaration of class InstrumentTrack, a track + window
  *                     which holds an instrument-plugin
  *
- * Copyright (c) 2004-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2004-2012 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -80,6 +80,11 @@ public:
 	// silence all running notes played by this track
 	void silenceAllNotes();
 
+	bool isSustainPedalPressed() const
+	{
+		return m_sustainPedalPressed;
+	}
+
 	f_cnt_t beatLen( notePlayHandle * _n ) const;
 
 
@@ -215,6 +220,7 @@ private:
 
 	notePlayHandle * m_notes[NumKeys];
 	int m_runningMidiNotes[NumKeys];
+	bool m_sustainPedalPressed;
 
 	IntModel m_baseNoteModel;
 

src/core/note_play_handle.cpp

@@ -190,6 +190,7 @@ void notePlayHandle::play( sampleFrame * _working_buffer )
 	}
 
 	if( m_released == false &&
+		instrumentTrack()->isSustainPedalPressed() == false &&
 		m_totalFramesPlayed + engine::getMixer()->framesPerPeriod()
 								>= m_frames )
 	{
@@ -293,7 +294,11 @@ void notePlayHandle::play( sampleFrame * _working_buffer )
 
 f_cnt_t notePlayHandle::framesLeft() const
 {
-	if( m_released && actualReleaseFramesToDo() == 0 )
+	if( instrumentTrack()->isSustainPedalPressed() )
+	{
+		return 4*engine::getMixer()->framesPerPeriod();
+	}
+	else if( m_released && actualReleaseFramesToDo() == 0 )
 	{
 		return m_framesBeforeRelease;
 	}

src/tracks/InstrumentTrack.cpp

@@ -98,6 +98,7 @@ InstrumentTrack::InstrumentTrack( trackContainer * _tc ) :
 	m_midiPort( tr( "unnamed_track" ), engine::getMixer()->midiClient(),
 								this, this ),
 	m_notes(),
+	m_sustainPedalPressed( false ),
 	m_baseNoteModel( 0, 0, KeysPerOctave * NumOctaves - 1, this,
 							tr( "Base note" ) ),
         m_volumeModel( DefaultVolume, MinVolume, MaxVolume, 0.1f, this,
@@ -303,6 +304,18 @@ void InstrumentTrack::processInEvent( const midiEvent & _me,
 			break;
 
 		case MidiControlChange:
+			if( _me.controllerNumber() == MidiControllerSustain )
+			{
+				if( _me.controllerValue() > MidiMaxControllerValue/2 )
+				{
+					m_sustainPedalPressed = true;
+				}
+				else
+				{
+					m_sustainPedalPressed = false;
+				}
+			}
+
 		case MidiProgramChange:
 			m_instrument->handleMidiEvent( _me, _time );
 			break;