From 61d45bff5f23978675e8e7efcd579eaf6c499508 Mon Sep 17 00:00:00 2001
From: Steve Lascos <slascos@blackaddr.com>
Date: Sat, 20 Jan 2018 21:07:40 -0500
Subject: [PATCH] added some midi controls

---
 src/AudioEffectAnalogDelay.cpp | 77 +++++++++++++++++++++++++++++++++-
 src/AudioEffectAnalogDelay.h   | 17 +++++++-
 src/LibBasicFunctions.cpp      |  2 +-
 3 files changed, 92 insertions(+), 4 deletions(-)

diff --git a/src/AudioEffectAnalogDelay.cpp b/src/AudioEffectAnalogDelay.cpp
index 0dfa4f1..73d9b6a 100644
--- a/src/AudioEffectAnalogDelay.cpp
+++ b/src/AudioEffectAnalogDelay.cpp
@@ -9,16 +9,28 @@
 
 namespace BAGuitar {
 
+constexpr int MIDI_NUM_PARAMS = 4;
+constexpr int MIDI_CHANNEL = 0;
+constexpr int MIDI_CONTROL = 1;
+
+constexpr int MIDI_ENABLE = 0;
+constexpr int MIDI_DELAY = 1;
+constexpr int MIDI_FEEDBACK = 2;
+constexpr int MIDI_MIX = 3;
+
+
 AudioEffectAnalogDelay::AudioEffectAnalogDelay(float maxDelay)
 : AudioStream(1, m_inputQueueArray)
 {
 	m_memory = new AudioDelay(maxDelay);
+	m_maxDelaySamples = calcAudioSamples(maxDelay);
 }
 
 AudioEffectAnalogDelay::AudioEffectAnalogDelay(size_t numSamples)
 : AudioStream(1, m_inputQueueArray)
 {
 	m_memory = new AudioDelay(numSamples);
+	m_maxDelaySamples = numSamples;
 }
 
 // requires preallocated memory large enough
@@ -26,6 +38,7 @@ AudioEffectAnalogDelay::AudioEffectAnalogDelay(ExtMemSlot *slot)
 : AudioStream(1, m_inputQueueArray)
 {
 	m_memory = new AudioDelay(slot);
+	m_maxDelaySamples = slot->size();
 	m_externalMemory = true;
 }
 
@@ -74,7 +87,7 @@ void AudioEffectAnalogDelay::update(void)
 
 
 	m_callCount++;
-	Serial.println(String("AudioEffectAnalgDelay::update: ") + m_callCount);
+	//Serial.println(String("AudioEffectAnalgDelay::update: ") + m_callCount);
 
 	// Preprocessing
 	audio_block_t *preProcessed = allocate();
@@ -151,6 +164,68 @@ void AudioEffectAnalogDelay::delay(size_t delaySamples)
 }
 
 
+void AudioEffectAnalogDelay::processMidi(int channel, int control, int value)
+{
+	float val = (float)value / 127.0f;
+
+	if ((m_midiConfig[MIDI_DELAY][MIDI_CHANNEL] == channel) &&
+        (m_midiConfig[MIDI_DELAY][MIDI_CONTROL] == control)) {
+		// Delay
+		Serial.println(String("AudioEffectAnalogDelay::delay: ") + val);
+		delay((size_t)(val * m_maxDelaySamples));
+		return;
+	}
+
+	if ((m_midiConfig[MIDI_ENABLE][MIDI_CHANNEL] == channel) &&
+        (m_midiConfig[MIDI_ENABLE][MIDI_CONTROL] == control)) {
+		// Enable
+		if (val >= 65) { enable(); Serial.println(String("AudioEffectAnalogDelay::enable: ON") + value); }
+		else { disable(); Serial.println(String("AudioEffectAnalogDelay::enable: OFF") + value); }
+		return;
+	}
+
+	if ((m_midiConfig[MIDI_FEEDBACK][MIDI_CHANNEL] == channel) &&
+        (m_midiConfig[MIDI_FEEDBACK][MIDI_CONTROL] == control)) {
+		// Feedback
+		Serial.println(String("AudioEffectAnalogDelay::feedback: ") + val);
+		feedback(val);
+		return;
+	}
+
+	if ((m_midiConfig[MIDI_MIX][MIDI_CHANNEL] == channel) &&
+        (m_midiConfig[MIDI_MIX][MIDI_CONTROL] == control)) {
+		// Mix
+		Serial.println(String("AudioEffectAnalogDelay::mix: ") + val);
+		mix(val);
+		return;
+	}
+
+}
+void AudioEffectAnalogDelay::mapMidiDelay(int control, int channel)
+{
+	m_midiConfig[MIDI_DELAY][MIDI_CHANNEL] = channel;
+	m_midiConfig[MIDI_DELAY][MIDI_CONTROL] = control;
+}
+
+void AudioEffectAnalogDelay::mapMidiEnable(int control, int channel)
+{
+	m_midiConfig[MIDI_ENABLE][MIDI_CHANNEL] = channel;
+	m_midiConfig[MIDI_ENABLE][MIDI_CONTROL] = control;
+}
+
+void AudioEffectAnalogDelay::mapMidiFeedback(int control, int channel)
+{
+	m_midiConfig[MIDI_FEEDBACK][MIDI_CHANNEL] = channel;
+	m_midiConfig[MIDI_FEEDBACK][MIDI_CONTROL] = control;
+}
+
+void AudioEffectAnalogDelay::mapMidiMix(int control, int channel)
+{
+	m_midiConfig[MIDI_MIX][MIDI_CHANNEL] = channel;
+	m_midiConfig[MIDI_MIX][MIDI_CONTROL] = control;
+}
+
+
 void AudioEffectAnalogDelay::m_preProcessing(audio_block_t *out, audio_block_t *dry, audio_block_t *wet)
 {
 	if ( out && dry && wet) {
diff --git a/src/AudioEffectAnalogDelay.h b/src/AudioEffectAnalogDelay.h
index 92cbfc0..b354dc3 100644
--- a/src/AudioEffectAnalogDelay.h
+++ b/src/AudioEffectAnalogDelay.h
@@ -33,21 +33,34 @@ public:
 	void enable() { m_enable = true; }
 	void disable() { m_enable = false; }
 
+	void processMidi(int channel, int control, int value);
+	void mapMidiEnable(int control, int channel = 0);
+	void mapMidiDelay(int control, int channel = 0);
+	void mapMidiFeedback(int control, int channel = 0);
+	void mapMidiMix(int control, int channel = 0);
+
 private:
 	audio_block_t *m_inputQueueArray[1];
 	bool m_enable = false;
 	bool m_externalMemory = false;
 	AudioDelay *m_memory = nullptr;
+	size_t m_maxDelaySamples = 0;
 
+	// Controls
+	int m_midiConfig[4][2];
+	//int m_midiEnable[2] = {0,16};
 	size_t m_delaySamples = 0;
+	//int m_midiDelay[2] = {0,20};
 	float m_feedback = 0.0f;
+	//int m_midiFeedback[2] = {0,21};
 	float m_mix = 0.0f;
-
-	size_t m_callCount = 0;
+	//int m_midiMix[2] = {0,22};
 
 	audio_block_t *m_previousBlock = nullptr;
 	void m_preProcessing(audio_block_t *out, audio_block_t *dry, audio_block_t *wet);
 	void m_postProcessing(audio_block_t *out, audio_block_t *dry, audio_block_t *wet);
+
+	size_t m_callCount = 0;
 };
 
 }
diff --git a/src/LibBasicFunctions.cpp b/src/LibBasicFunctions.cpp
index a94bb53..dba786e 100644
--- a/src/LibBasicFunctions.cpp
+++ b/src/LibBasicFunctions.cpp
@@ -174,7 +174,7 @@ bool AudioDelay::getSamples(audio_block_t *dest, size_t offset, size_t numSample
 				m_slot->setReadPosition((size_t)readPosition);
 			}
 
-			m_slot->printStatus();
+			//m_slot->printStatus();
 
 			// write the data to the destination block in reverse
 //			int16_t *destPtr = dest->data + AUDIO_BLOCK_SAMPLES-1;