support for more special instrument-properties (monophonic, own number of release-frames)

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@436 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/envelope_tab_widget.h

@@ -97,6 +97,7 @@ public:
 private:
 	tabWidget * m_targetsTabWidget;
 	envelopeAndLFOWidget * m_envLFOWidgets[TARGET_COUNT];
+	instrumentTrack * m_instrumentTrack;
 
 	// filter-stuff
 	groupBox * m_filterGroupBox;

include/instrument.h

@@ -87,6 +87,22 @@ public:
 	virtual f_cnt_t FASTCALL beatLen( notePlayHandle * _n ) const;
 
 
+	// some instruments need a certain number of release-frames even
+	// if no envelope is active - such instruments can re-implement this
+	// method for returning how many frames they at least like to have for
+	// release
+	virtual f_cnt_t desiredReleaseFrames( void ) const
+	{
+		return( 0 );
+	}
+
+	// monophonic instruments can re-implement this indicate that they do
+	// not allow more then one note being played at the same time
+	virtual bool isMonophonic( void ) const
+	{
+		return( FALSE );
+	}
+
 	// instrument-play-handles use this for checking whether they can mark
 	// themselves as done, so that mixer trashes them
 	inline virtual bool valid( void ) const

include/instrument_track.h

@@ -107,6 +107,11 @@ public:
 	void FASTCALL playNote( notePlayHandle * _n, bool _try_parallelizing );
 
 	QString instrumentName( void ) const;
+	inline const instrument * getInstrument( void ) const
+	{
+		return( m_instrument );
+	}
+
 	void FASTCALL deleteNotePluginData( notePlayHandle * _n );
 
 	// name-stuff

include/mixer.h

@@ -172,7 +172,7 @@ public:
 		return( FALSE );
 	}
 
-	inline void removePlayHandle( playHandle * _ph )
+	inline void removePlayHandle( const playHandle * _ph )
 	{
 		m_playHandlesToRemove.push_back( _ph );
 	}
@@ -287,6 +287,7 @@ public slots:
 	void setHighQuality( bool _hq_on = FALSE );
 	void setClipScaling( bool _state );
 
+
 signals:
 	void sampleRateChanged( void );
 	void nextAudioBuffer( const surroundSampleFrame *, int _frames );
@@ -294,7 +295,7 @@ signals:
 
 private:
 	mixer( engine * _engine );
-	~mixer();
+	virtual ~mixer();
 
 	void startProcessing( void );
 	void stopProcessing( void );
@@ -341,7 +342,7 @@ private:
 	int m_parallelizingLevel;
 
 	playHandleVector m_playHandles;
-	playHandleVector m_playHandlesToRemove;
+	constPlayHandleVector m_playHandlesToRemove;
 
 	qualityLevels m_qualityLevel;
 	float m_masterGain;