Added free filter envelope random transform

Source/PS_Source/StretchSource.cpp

@@ -253,6 +253,11 @@ void StretchAudioSource::getNextAudioBlock(const AudioSourceChannelInfo & buffer
 			{
 				readed = m_inputfile->readNextBlock(m_file_inbuf, readsize, m_num_outchans);
 			}
+			if (m_rand_count % (int)m_free_filter_envelope->m_transform_y_random_rate == 0)
+			{
+				m_free_filter_envelope->updateRandomState();
+			}
+			++m_rand_count;
 			auto inbufptrs = m_file_inbuf.getArrayOfWritePointers();
 			REALTYPE onset_max = std::numeric_limits<REALTYPE>::min();
 #ifdef USE_PPL_TO_PROCESS_STRETCHERS

Source/PS_Source/StretchSource.h

@@ -131,7 +131,7 @@ private:
 	
 	int m_pause_state = 0;
 	Range<double> m_playrange{ 0.0,1.0 };
-	
+	int64_t m_rand_count = 0;
 	bool m_stream_end_reached = false;
 	int64_t m_output_silence_counter = 0;
 	File m_curfile;

Source/PluginEditor.cpp

@@ -284,6 +284,14 @@ void PaulstretchpluginAudioProcessorEditor::resized()
 	m_parcomps[cpi_freefilter_scaley]->setBounds(xoffs, yoffs, div - 1, 24);
 	xoffs += div;
 	m_parcomps[cpi_freefilter_tilty]->setBounds(xoffs, yoffs, div - 1, 24);
+	xoffs = 1;
+	yoffs += 25;
+	div = w / 3;
+	m_parcomps[cpi_freefilter_randomy_numbands]->setBounds(xoffs, yoffs, div - 1, 24);
+	xoffs += div;
+	m_parcomps[cpi_freefilter_randomy_rate]->setBounds(xoffs, yoffs, div - 1, 24);
+	xoffs += div;
+	m_parcomps[cpi_freefilter_randomy_amount]->setBounds(xoffs, yoffs, div - 1, 24);
 	yoffs += 25;
 	int remain_h = getHeight() - 1 - yoffs;
 	m_spec_order_ed.setBounds(1, yoffs, getWidth() - 2, remain_h / 5 * 1);

Source/PluginProcessor.cpp

@@ -154,6 +154,9 @@ PaulstretchpluginAudioProcessor::PaulstretchpluginAudioProcessor()
 	addParameter(new AudioParameterFloat("freefilter_shifty_0", "Free filter shift Y", -1.0f, 1.0f, 0.0f)); // 35
 	addParameter(new AudioParameterFloat("freefilter_scaley_0", "Free filter scale Y", -1.0f, 1.0f, 1.0f)); // 36
 	addParameter(new AudioParameterFloat("freefilter_tilty_0", "Free filter tilt Y", -1.0f, 1.0f, 0.0f)); // 37
+	addParameter(new AudioParameterInt("freefilter_randomybands0", "Random bands", 2, 128, 16)); // 38
+	addParameter(new AudioParameterInt("freefilter_randomyrate0", "Random rate", 1, 32, 2)); // 39
+	addParameter(new AudioParameterFloat("freefilter_randomyamount0", "Random amount", 0.0, 1.0, 0.0)); // 40
 	auto& pars = getParameters();
 	for (const auto& p : pars)
 		m_reset_pars.push_back(p->getValue());
@@ -634,7 +637,10 @@ void PaulstretchpluginAudioProcessor::processBlock (AudioSampleBuffer& buffer, M
 	m_free_filter_envelope->m_transform_y_shift = *getFloatParameter(cpi_freefilter_shifty);
 	m_free_filter_envelope->m_transform_y_scale = *getFloatParameter(cpi_freefilter_scaley);
 	m_free_filter_envelope->m_transform_y_tilt = *getFloatParameter(cpi_freefilter_tilty);
-	
+	m_free_filter_envelope->m_transform_y_random_bands = *getIntParameter(cpi_freefilter_randomy_numbands);
+	m_free_filter_envelope->m_transform_y_random_rate = *getIntParameter(cpi_freefilter_randomy_rate);
+	m_free_filter_envelope->m_transform_y_random_amount = *getFloatParameter(cpi_freefilter_randomy_amount);
+
 	m_stretch_source->setMainVolume(*getFloatParameter(cpi_main_volume));
 	m_stretch_source->setRate(*getFloatParameter(cpi_stretchamount));
 	m_stretch_source->setPreviewDry(*getBoolParameter(cpi_bypass_stretch));

Source/PluginProcessor.h

@@ -64,6 +64,9 @@ const int cpi_freefilter_shiftx = 34;
 const int cpi_freefilter_shifty = 35;
 const int cpi_freefilter_scaley = 36;
 const int cpi_freefilter_tilty = 37;
+const int cpi_freefilter_randomy_numbands = 38;
+const int cpi_freefilter_randomy_rate = 39;
+const int cpi_freefilter_randomy_amount = 40;
 
 class MyPropertiesFile
 {

Source/jcdp_envelope.h

@@ -20,6 +20,7 @@ along with CDP front-end.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <vector>
 #include <algorithm>
+#include <random>
 #include "../JuceLibraryCode/JuceHeader.h"
 #include "PS_Source/globals.h"
 
@@ -193,7 +194,10 @@ inline double interpolate_foo(double atime,double t0, double v0, double t1, doub
 class breakpoint_envelope
 {
 public:
-    breakpoint_envelope() : m_name("Untitled") {}
+    breakpoint_envelope() : m_name("Untitled") 
+	{
+		m_randbuf.resize(1024);
+	}
     breakpoint_envelope(String name, double minv=0.0, double maxv=1.0)
         : m_minvalue(minv), m_maxvalue(maxv), m_name(name)
     {
@@ -202,6 +206,7 @@ public:
         m_defvalue=0.5;
         m_updateopinprogress=false;
         m_value_grid={0.0,0.25,0.5,0.75,1.0};
+		m_randbuf.resize(1024);
     }
 
 
@@ -567,6 +572,9 @@ public:
     double m_transform_y_sinus = 0.0;
     double m_transform_y_sinus_freq = 8.0;
     double m_transform_y_tilt = 0.0;
+	double m_transform_y_random_amount = 0.2;
+	double m_transform_y_random_rate = 2.0;
+	int m_transform_y_random_bands = 32;
 	bool m_transform_wrap_x = false;
 	double m_min_pt_value = 0.0;
 	double m_max_pt_value = 0.0;
@@ -589,12 +597,19 @@ public:
             sin(2*3.141592653*(x-m_transform_x_shift)*m_transform_y_sinus_freq);
         double tiltline = m_transform_y_tilt-(2.0*m_transform_y_tilt*x);
         double tilted = shifted+tiltline;
-        return jlimit(0.0,1.0,tilted);
+		if (m_transform_y_random_amount > 0.0)
+		{
+			
+			int tableindex = jlimit<int>(0,m_randbuf.size()-1, floor(x * (m_transform_y_random_bands)));
+			double randamt = jmap(m_randbuf[tableindex], 0.0, 1.0, -m_transform_y_random_amount, m_transform_y_random_amount);
+			tilted += randamt;
+		}
+		return jlimit(0.0,1.0,tilted);
 	}
 	bool isTransformed() const
 	{
 		return m_transform_x_shift != 0.0 || m_transform_y_shift != 0.0
-        || m_transform_y_scale!=1.0 || m_transform_y_sinus!=0.0 || m_transform_y_tilt!=0.0;
+        || m_transform_y_scale!=1.0 || m_transform_y_sinus!=0.0 || m_transform_y_tilt!=0.0 || m_transform_y_random_amount!=0.0;
 	}
 	void updateMinMaxValues()
 	{
@@ -608,6 +623,13 @@ public:
 		m_minvalue = minv;
 		m_maxvalue = maxv;
 	}
+	void updateRandomState()
+	{
+		//Logger::writeToLog("updating envelope random state");
+		std::uniform_real_distribution<double> dist(0.0,1.0);
+		for (int i = 0; i < m_transform_y_random_bands+1; ++i)
+			m_randbuf[i] = dist(m_randgen);
+	}
 private:
     nodes_t m_nodes;
     double m_playoffset=0.0;
@@ -625,6 +647,8 @@ private:
     nodes_t m_old_nodes;
     nodes_t m_repeater_nodes;
     grid_t m_value_grid;
+	std::mt19937 m_randgen;
+	std::vector<double> m_randbuf;
 	JUCE_LEAK_DETECTOR(breakpoint_envelope)
 };