Merge pull request #761 from zonkmachine/random-wave-2

Random wave for instrument plugin LFO

include/EnvelopeAndLfoParameters.h

@@ -157,6 +157,7 @@ private:
 	float m_lfoAmount;
 	bool m_lfoAmountIsZero;
 	sample_t * m_lfoShapeData;
+	sample_t m_random;
 	bool m_bad_lfoShapeData;
 	SampleBuffer m_userWave;
 
@@ -167,6 +168,7 @@ private:
 		SawWave,
 		SquareWave,
 		UserDefinedWave,
+		RandomWave,
 		NumLfoShapes
 	} ;
 
@@ -174,7 +176,6 @@ private:
 	void updateLfoShapeData();
 
 
-
 	friend class EnvelopeAndLfoView;
 	friend class FlpImport;
 

include/EnvelopeAndLfoView.h

@@ -90,7 +90,8 @@ private:
 
 	ledCheckBox * m_x100Cb;
 	ledCheckBox * m_controlEnvAmountCb;
-
+	
+	float m_randomGraph;
 } ;
 
 #endif

src/core/EnvelopeAndLfoParameters.cpp

@@ -68,6 +68,7 @@ void EnvelopeAndLfoParameters::LfoInstances::reset()
 
 
 
+
 void EnvelopeAndLfoParameters::LfoInstances::add( EnvelopeAndLfoParameters * lfo )
 {
 	QMutexLocker m( &m_lfoListMutex );
@@ -86,7 +87,6 @@ void EnvelopeAndLfoParameters::LfoInstances::remove( EnvelopeAndLfoParameters *
 
 
 
-
 EnvelopeAndLfoParameters::EnvelopeAndLfoParameters(
 					float _value_for_zero_amount,
 							Model * _parent ) :
@@ -218,6 +218,13 @@ inline sample_t EnvelopeAndLfoParameters::lfoShapeSample( fpp_t _frame_offset )
 		case UserDefinedWave:
 			shape_sample = m_userWave.userWaveSample( phase );
 			break;
+		case RandomWave:
+			if( frame == 0 )
+			{
+				m_random = Oscillator::noiseSample( 0.0f );
+			}
+			shape_sample = m_random;
+			break;
 		case SineWave:
 		default:
 			shape_sample = Oscillator::sinSample( phase );

src/gui/widgets/EnvelopeAndLfoView.cpp

@@ -251,7 +251,7 @@ EnvelopeAndLfoView::EnvelopeAndLfoView( QWidget * _parent ) :
 		tr( "Click here for a square-wave." ) );
 
 	m_userLfoBtn = new pixmapButton( this, NULL );
-	m_userLfoBtn->move( LFO_SHAPES_X+60, LFO_SHAPES_Y );
+	m_userLfoBtn->move( LFO_SHAPES_X+75, LFO_SHAPES_Y );
 	m_userLfoBtn->setActiveGraphic( embed::getIconPixmap(
 							"usr_wave_active" ) );
 	m_userLfoBtn->setInactiveGraphic( embed::getIconPixmap(
@@ -264,13 +264,22 @@ EnvelopeAndLfoView::EnvelopeAndLfoView( QWidget * _parent ) :
 	connect( m_userLfoBtn, SIGNAL( toggled( bool ) ),
 				this, SLOT( lfoUserWaveChanged() ) );
 
+	pixmapButton * random_lfo_btn = new pixmapButton( this, NULL );
+	random_lfo_btn->move( LFO_SHAPES_X+60, LFO_SHAPES_Y );
+	random_lfo_btn->setActiveGraphic( embed::getIconPixmap(
+						"random_wave_active" ) );
+	random_lfo_btn->setInactiveGraphic( embed::getIconPixmap(
+						"random_wave_inactive" ) );
+	random_lfo_btn->setWhatsThis(
+		tr( "Click here for random wave." ) );
+
 	m_lfoWaveBtnGrp = new automatableButtonGroup( this );
 	m_lfoWaveBtnGrp->addButton( sin_lfo_btn );
 	m_lfoWaveBtnGrp->addButton( triangle_lfo_btn );
 	m_lfoWaveBtnGrp->addButton( saw_lfo_btn );
 	m_lfoWaveBtnGrp->addButton( sqr_lfo_btn );
 	m_lfoWaveBtnGrp->addButton( m_userLfoBtn );
-
+	m_lfoWaveBtnGrp->addButton( random_lfo_btn );
 
 	m_x100Cb = new ledCheckBox( tr( "FREQ x 100" ), this );
 	m_x100Cb->setFont( pointSizeF( m_x100Cb->font(), 6.5 ) );
@@ -525,9 +534,17 @@ void EnvelopeAndLfoView::paintEvent( QPaintEvent * )
 				case EnvelopeAndLfoParameters::SquareWave:
 					val = Oscillator::squareSample( phase );
 					break;
+				case EnvelopeAndLfoParameters::RandomWave:
+					if( x % (int)( 900 * m_lfoSpeedKnob->value<float>() + 1 ) == 0 )
+					{
+						m_randomGraph = Oscillator::noiseSample( 0.0f );
+					}
+					val = m_randomGraph;
+					break;
 				case EnvelopeAndLfoParameters::UserDefinedWave:
 					val = m_params->m_userWave.
 							userWaveSample( phase );
+					break;
 			}
 			if( static_cast<f_cnt_t>( cur_sample ) <=
 						m_params->m_lfoAttackFrames )