From 0052c77bbbed98ad34b8398f52af1a20a0e92195 Mon Sep 17 00:00:00 2001
From: xenakios <xenakios@gmail.com>
Date: Wed, 20 Dec 2017 20:33:34 +0200
Subject: [PATCH] Add option to capture only when host transport active. Add
 option to always pass input audio through. That should probably be a plugin
 parameter though...

---
 Source/PluginEditor.cpp    |  5 +++++
 Source/PluginProcessor.cpp | 16 ++++++++++++++--
 Source/PluginProcessor.h   |  2 ++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/Source/PluginEditor.cpp b/Source/PluginEditor.cpp
index 1d4cd98..eb163fd 100644
--- a/Source/PluginEditor.cpp
+++ b/Source/PluginEditor.cpp
@@ -225,6 +225,7 @@ void PaulstretchpluginAudioProcessorEditor::showSettingsMenu()
 	PopupMenu menu;
 	menu.addItem(1, "Play when host transport running", true, processor.m_play_when_host_plays);
 	menu.addItem(2, "Capture when host transport running", true, processor.m_capture_when_host_plays);
+	menu.addItem(3, "Always pass audio input through", true, processor.m_pass_input_through);
 	//menu.addItem(3, "Prebuffering", true, processor.m_use_backgroundbuffering);
     PopupMenu bufferingmenu;
     int curbufamount = processor.getPreBufferAmount();
@@ -244,6 +245,10 @@ void PaulstretchpluginAudioProcessorEditor::showSettingsMenu()
 	{
 		processor.m_capture_when_host_plays = !processor.m_capture_when_host_plays;
 	}
+	if (r == 3)
+	{
+		processor.m_pass_input_through = !processor.m_pass_input_through;
+	}
     if (r >= 100 && r < 200)
     {
         if (r == 100)
diff --git a/Source/PluginProcessor.cpp b/Source/PluginProcessor.cpp
index a1e2ae7..92fb0fd 100644
--- a/Source/PluginProcessor.cpp
+++ b/Source/PluginProcessor.cpp
@@ -285,12 +285,14 @@ void PaulstretchpluginAudioProcessor::prepareToPlay(double sampleRate, int sampl
 	ScopedLock locker(m_cs);
 	m_cur_sr = sampleRate;
 	m_curmaxblocksize = samplesPerBlock;
+	m_input_buffer.setSize(2, samplesPerBlock);
 	int numoutchans = *m_outchansparam;
 	if (numoutchans != m_cur_num_out_chans)
 		m_ready_to_play = false;
 	if (m_using_memory_buffer == true)
 	{
-		int len = jlimit(100,m_recbuffer.getNumSamples(), m_rec_pos);
+		int len = jlimit(100,m_recbuffer.getNumSamples(), 
+			int(getSampleRateChecked()*(*getFloatParameter(cpi_max_capture_len))));
 		m_stretch_source->setAudioBufferAsInputSource(&m_recbuffer, 
 			getSampleRateChecked(), 
 			len);
@@ -373,13 +375,16 @@ void PaulstretchpluginAudioProcessor::processBlock (AudioSampleBuffer& buffer, M
 		m_cur_sr = srtemp;
     const int totalNumInputChannels  = getTotalNumInputChannels();
     const int totalNumOutputChannels = getTotalNumOutputChannels();
-
+	for (int i = 0; i < totalNumInputChannels; ++i)
+		m_input_buffer.copyFrom(i, 0, buffer, i, 0, buffer.getNumSamples());
     for (int i = totalNumInputChannels; i < totalNumOutputChannels; ++i)
         buffer.clear (i, 0, buffer.getNumSamples());
 	if (m_ready_to_play == false)
 		return;
 	if (m_is_recording == true)
 	{
+		if (m_playposinfo.isPlaying == false && m_capture_when_host_plays == true)
+			return;
 		int recbuflenframes = m_max_reclen * getSampleRate();
 		copyAudioBufferWrappingPosition(buffer, m_recbuffer, m_rec_pos, recbuflenframes);
 		callGUI(this,[this, &buffer](PaulstretchpluginAudioProcessorEditor*ed) 
@@ -450,6 +455,13 @@ void PaulstretchpluginAudioProcessor::processBlock (AudioSampleBuffer& buffer, M
 	{
 		m_buffering_source->getNextAudioBlock(aif);
 	}
+	if (m_pass_input_through == true)
+	{
+		for (int i = 0; i < totalNumInputChannels; ++i)
+		{
+			buffer.addFrom(i, 0, m_input_buffer, i, 0, buffer.getNumSamples());
+		}
+	}
 	for (int i = 0; i < buffer.getNumChannels(); ++i)
 	{
 		for (int j = 0; j < buffer.getNumSamples(); ++j)
diff --git a/Source/PluginProcessor.h b/Source/PluginProcessor.h
index 6814146..ba007eb 100644
--- a/Source/PluginProcessor.h
+++ b/Source/PluginProcessor.h
@@ -139,6 +139,7 @@ public:
 	bool m_play_when_host_plays = false;
 	bool m_capture_when_host_plays = false;
     bool m_use_backgroundbuffering = true;
+	bool m_pass_input_through = false;
     void setPreBufferAmount(int x);
     int getPreBufferAmount()
     {
@@ -180,6 +181,7 @@ private:
 	int m_curmaxblocksize = 0;
 	double m_cur_sr = 0.0;
 	bool m_last_host_playing = false;
+	AudioBuffer<float> m_input_buffer;
 	//==============================================================================
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (PaulstretchpluginAudioProcessor)
 };