sf2 understands panning midi meta events now

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1942 0778d3d1-df1d-0410-868b-ea421aaaa00d

ChangeLog

@@ -18,6 +18,16 @@
 	changed modifier detection from mainWindow::isCtrlPressed etc to
 	Qt framework detection. Fixes a bunch of little glitches and
 	enables horizontal scroll wheels.
+	
+	* plugins/sf2_player/sf2_player.cpp:
+	* plugins/sf2_player/sf2_player.h:
+	* include/note_play_handle.h:
+	* src/core/note_play_handle.cpp:
+	* include/instrument.h:
+	* src/tracks/instrument_track.cpp:
+	experimental support for note panning in SF2 player (I'm not sure
+	what m_maxChannels should be or how to find it out. I just picked
+	what worked for my setup.)
 
 2008-12-15	Paul Giblock <drfaygo/at/gmail/dot/com>
 	

include/instrument.h

@@ -63,6 +63,11 @@ public:
 					sampleFrame * /* _working_buf */ )
 	{
 	}
+		
+	// event called when a note's panning changes
+	virtual void updatePanning( notePlayHandle * )
+	{	
+	}
 
 	// needed for deleting plugin-specific-data of a note - plugin has to
 	// cast void-ptr so that the plugin-data is deleted properly

plugins/sf2_player/sf2_player.cpp

@@ -600,6 +600,17 @@ void sf2Instrument::playNote( notePlayHandle * _n, sampleFrame * )
 }
 
 
+void sf2Instrument::updatePanning( notePlayHandle * _n )
+{
+	short ctrl = 0x0A; // PAN_MSB
+	int pan = 0 + 
+			  ( (float)( _n->getPanning() - PanningLeft ) ) / 
+			  ( (float)( PanningRight - PanningLeft ) ) *
+			  ( (float)( 127 - 0 ) );
+	fluid_synth_cc( m_synth, _n->channel(), ctrl, pan );
+}
+
+
 // Could we get iph-based instruments support sample-exact models by using a 
 // frame-length of 1 while rendering?
 void sf2Instrument::play( sampleFrame * _working_buffer )

plugins/sf2_player/sf2_player.h

@@ -59,6 +59,8 @@ public:
 	virtual void playNote( notePlayHandle * _n,
 						sampleFrame * _working_buffer );
 	virtual void deleteNotePluginData( notePlayHandle * _n );
+		
+	virtual void updatePanning( notePlayHandle * );
 
 
 	virtual void saveSettings( QDomDocument & _doc, QDomElement & _parent );

src/tracks/instrument_track.cpp

@@ -307,6 +307,7 @@ void instrumentTrack::processInEvent( const midiEvent & _me,
 					if( m_notes[_me.key()] != NULL )
 					{
 						m_notes[_me.key()]->setPanning( _me.getPanning() );
+						m_instrument->updatePanning( m_notes[_me.key()] );
 					}
 					break;
 				default: