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/*
==============================================================================
This file is part of the IEM plug-in suite.
Author: Stefan Riedel
Copyright (c) 2022 - Institute of Electronic Music and Acoustics (IEM)
https://iem.at
The IEM plug-in suite is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The IEM plug-in suite is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this software. If not, see <https://www.gnu.org/licenses/>.
==============================================================================
*/
#pragma once
#include "../../resources/AudioProcessorBase.h"
#include "../JuceLibraryCode/JuceHeader.h"
#include "../../resources/Quaternion.h"
#include "../../resources/ambisonicTools.h"
#include "../../resources/efficientSHvanilla.h"
#include "../../resources/Conversions.h"
#include "Grain.h"
#include <random>
#define ProcessorClass GranularEncoderAudioProcessor
#define maxNumGrains 512
#define windowResolution 1024
#define CIRC_BUFFER_SECONDS 8.0f
#define MAX_GRAIN_LENGTH 2.0f
#define MIN_GRAIN_LENGTH 0.001f
#define MAX_DELTA_T 2.0f
#define MIN_DELTA_T 0.001f
#define GUI_SKEW 0.5f
//==============================================================================
/**
*/
class GranularEncoderAudioProcessor
: public AudioProcessorBase<IOTypes::AudioChannels<2>, IOTypes::Ambisonics<>>
{
public:
constexpr static int numberOfInputChannels = 2;
constexpr static int numberOfOutputChannels = 64;
//==============================================================================
GranularEncoderAudioProcessor();
~GranularEncoderAudioProcessor();
//==============================================================================
void prepareToPlay (double sampleRate, int samplesPerBlock) override;
void releaseResources() override;
void processBlock (juce::AudioBuffer<float>&, juce::MidiBuffer&) override;
//==============================================================================
juce::AudioProcessorEditor* createEditor() override;
bool hasEditor() const override;
//==============================================================================
int getNumPrograms() override;
int getCurrentProgram() override;
void setCurrentProgram (int index) override;
const juce::String getProgramName (int index) override;
void changeProgramName (int index, const juce::String& newName) override;
//==============================================================================
void getStateInformation (juce::MemoryBlock& destData) override;
void setStateInformation (const void* data, int sizeInBytes) override;
void resampleAudioBuffer (juce::AudioBuffer<float>& inAudioBuffer,
float inSampleRate,
juce::AudioBuffer<float>& outAudioBuffer,
float outSampleRate);
void parameterChanged (const juce::String& parameterID, float newValue) override;
// ====== OSC ==================================================================
const bool processNotYetConsumedOSCMessage (const juce::OSCMessage& message) override;
// =================
//======= Parameters ===========================================================
std::vector<std::unique_ptr<juce::RangedAudioParameter>> createParameterLayout();
//==============================================================================
inline void updateQuaternions();
inline void updateEuler();
juce::Vector3D<float> getRandomGrainDirection3D();
juce::Vector3D<float> getRandomGrainDirection2D();
juce::AudioBuffer<float> getWindowBuffer (float modWeight);
int getStartPositionCircBuffer() const;
std::pair<int, float> getGrainLengthAndPitchFactor() const;
int getDeltaTimeSamples();
bool getChannelToSeed();
bool getFreezeGUIBool();
void initializeModeTransition (bool freeze);
void finishModeTransition();
float getMeanWindowGain();
// void writeCircularBufferToDisk(juce::String filename); // Debug function
juce::Vector3D<float> posC, posL, posR;
juce::Atomic<bool> updatedPositionData;
std::atomic<float>* orderSetting;
std::atomic<float>* useSN3D;
std::atomic<float>* qw;
std::atomic<float>* qx;
std::atomic<float>* qy;
std::atomic<float>* qz;
std::atomic<float>* azimuth;
std::atomic<float>* elevation;
std::atomic<float>* shape; // distribution parameter (circular to peaky, uniform at 0.0)
std::atomic<float>* size; // total opening angle of distribution cap
std::atomic<float>* roll; // legacy parameter from StereoEncoder
std::atomic<float>* width; // legacy parameter from StereoEncoder
std::atomic<float>* deltaTime;
std::atomic<float>* deltaTimeMod;
std::atomic<float>* grainLength;
std::atomic<float>* grainLengthMod;
std::atomic<float>* pitch;
std::atomic<float>* pitchMod;
std::atomic<float>* position;
std::atomic<float>* positionMod;
std::atomic<float>* windowAttack;
std::atomic<float>* windowAttackMod;
std::atomic<float>* windowDecay;
std::atomic<float>* windowDecayMod;
std::atomic<float>* mix;
std::atomic<float>* sourceProbability;
std::atomic<float>* highQuality;
std::atomic<float>* freeze;
std::atomic<float>* spatialize2D;
// --------------------
bool sphericalInput;
double phi, theta;
enum class OperationMode
{
Realtime,
ToFreeze,
Freeze,
ToRealtime
};
private:
//==============================================================================
bool processorUpdatingParams;
float SHC[64];
float _SHC[64];
juce::Atomic<bool> positionHasChanged = true;
iem::Quaternion<float> quaternionDirection;
juce::AudioBuffer<float> bufferCopy;
juce::AudioBuffer<float> dryAmbiBuffer;
juce::AudioBuffer<float> wetAmbiBuffer;
juce::AudioBuffer<float> circularBuffer;
int circularBufferWriteHead;
int circularBufferLength;
int deltaTimeSamples = 0;
float lastSampleRate;
float sampleRateAtSerialize;
int grainTimeCounter = 0;
Grain grains[maxNumGrains];
float _grainSH[maxNumGrains][64];
std::mt19937 rng;
juce::SmoothedValue<float> writeGainCircBuffer = 1.0f;
OperationMode mode = OperationMode::Realtime;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (GranularEncoderAudioProcessor)
};
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