andrewm@0: /*
andrewm@0:   This code accompanies the textbook:
andrewm@0:  
andrewm@0:   Digital Audio Effects: Theory, Implementation and Application
andrewm@0:   Joshua D. Reiss and Andrew P. McPherson
andrewm@0:  
andrewm@0:   ---
andrewm@0:  
andrewm@0:   Distortion: distortion effect using different characteristic curves
andrewm@0:   See textbook Chapter 7: Overdrive, Distortion and Fuzz
andrewm@0:  
andrewm@0:   Code by Brecht De Man, Joshua Reiss and Andrew McPherson
andrewm@0:  
andrewm@0:   When using this code (or a modified version thereof), please cite:
andrewm@0:  
andrewm@0:   Brecht De Man and Joshua D. Reiss, "Adaptive Control of Amplitude
andrewm@0:   Distortion Effects," 53rd Conference of the Audio Engineering Society,
andrewm@0:   2014.
andrewm@0:  
andrewm@0:   ---
andrewm@0: 
andrewm@0:   This program is free software: you can redistribute it and/or modify
andrewm@0:   it under the terms of the GNU General Public License as published by
andrewm@0:   the Free Software Foundation, either version 3 of the License, or
andrewm@0:   (at your option) any later version.
andrewm@0:  
andrewm@0:   This program is distributed in the hope that it will be useful,
andrewm@0:   but WITHOUT ANY WARRANTY; without even the implied warranty of
andrewm@0:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
andrewm@0:   GNU General Public License for more details.
andrewm@0: 
andrewm@0:   You should have received a copy of the GNU General Public License
andrewm@0:   along with this program.  If not, see <http://www.gnu.org/licenses/>.
andrewm@0: */
andrewm@0: 
andrewm@0: #ifndef __PLUGINPROCESSOR_H_88534BAA__
andrewm@0: #define __PLUGINPROCESSOR_H_88534BAA__
andrewm@0: 
andrewm@0: #include "../JuceLibraryCode/JuceHeader.h"
andrewm@0: #include <math.h>
andrewm@0: 
andrewm@0: class DistortionAudioProcessor  : public AudioProcessor
andrewm@0: {
andrewm@0: public:
andrewm@0:     DistortionAudioProcessor();
andrewm@0:     ~DistortionAudioProcessor();
andrewm@0:     
andrewm@0:     //==============================================================================
andrewm@0: 	// V S T   M E T H O D S
andrewm@0: 
andrewm@0:     void prepareToPlay (double sampleRate, int samplesPerBlock);
andrewm@0:     void releaseResources();
andrewm@0: 	void processBlock (AudioSampleBuffer& buffer, MidiBuffer& midiMessages);
andrewm@0:     AudioProcessorEditor* createEditor();
andrewm@0: 	bool silenceInProducesSilenceOut() const;
andrewm@0: 	virtual double getTailLengthSeconds() const {return 0;};
andrewm@0:     bool hasEditor() const;
andrewm@0:     const String getName() const;
andrewm@0:     int getNumParameters();
andrewm@0:     float getParameter (int index);
andrewm@0:     void setParameter (int index, float newValue);
andrewm@0:     const String getParameterName (int index);
andrewm@0:     const String getParameterText (int index);
andrewm@0:     const String getInputChannelName (int channelIndex) const;
andrewm@0:     const String getOutputChannelName (int channelIndex) const;
andrewm@0:     bool isInputChannelStereoPair (int index) const;
andrewm@0:     bool isOutputChannelStereoPair (int index) const;
andrewm@0:     bool acceptsMidi() const;
andrewm@0:     bool producesMidi() const;
andrewm@0:     int getNumPrograms();
andrewm@0:     int getCurrentProgram();
andrewm@0:     void setCurrentProgram (int index);
andrewm@0:     const String getProgramName (int index);
andrewm@0:     void changeProgramName (int index, const String& newName);
andrewm@0:     void getStateInformation (MemoryBlock& destData);
andrewm@0:     void setStateInformation (const void* data, int sizeInBytes);
andrewm@0: 
andrewm@0: 	//==============================================================================
andrewm@0: 	// E N U M S
andrewm@0: 
andrewm@0: 	enum Parameters
andrewm@0: 	{
andrewm@0:         _PARAMdeviceReset,
andrewm@0:         _PARAMgain,
andrewm@0:         _PARAMtype,
andrewm@0:         // add other parameters
andrewm@0: 		_PARAMtotalNumParams
andrewm@0: 	};
andrewm@0:     
andrewm@0:     
andrewm@0:     enum Types
andrewm@0: 	{
andrewm@0:         _hardClipping = 0,
andrewm@0:         _softClipping,
andrewm@0:         _softClippingExp,
andrewm@0:         _fullWaveRectifier,
andrewm@0:         _halfWaveRectifier,
andrewm@0:         _numberOfTypes
andrewm@0: 	};
andrewm@0: 
andrewm@0:     //==============================================================================
andrewm@0: 	// O U R   M E T H O D S
andrewm@0:     
andrewm@0:     void Reset();
andrewm@0: 
andrewm@0: private:
andrewm@0: 
andrewm@0: 	// Accessors and mutators
andrewm@0:     inline float    GetGainIndB();
andrewm@0:     inline void     SetGainIndB(float gainIndB);
andrewm@0:     inline DistortionAudioProcessor::Types    GetType();
andrewm@0:     inline void     SetType(Types type);
andrewm@0: 
andrewm@0: 	int	_numChannels;
andrewm@0: 	int	_numSamples;
andrewm@0:     int _sampleRate;
andrewm@0:     float _gainIndB;
andrewm@0:     
andrewm@0:     Types _typeNumber;
andrewm@0: 
andrewm@0: 	bool _isFirstFrame;
andrewm@0: 
andrewm@0: 	// Buffers
andrewm@0: 	AudioSampleBuffer _currentTrackBuffer;
andrewm@0: 
andrewm@0: 	int _lastUIWidth, _lastUIHeight;
andrewm@0:     
andrewm@0: 	friend class DistortionAudioProcessorEditor;
andrewm@0:     
andrewm@0: 	JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (DistortionAudioProcessor);
andrewm@0: };
andrewm@0: 
andrewm@0: //============================================================================= 
andrewm@0: // I N L I N E   F U N C T I O N S   C O D E   S E C T I O N 
andrewm@0: 
andrewm@0: 
andrewm@0: //-----------------------------------------------------------------------------
andrewm@0: //
andrewm@0: inline float
andrewm@0: DistortionAudioProcessor::GetGainIndB()
andrewm@0: {
andrewm@0: 	return _gainIndB;
andrewm@0: }
andrewm@0: 
andrewm@0: 
andrewm@0: //-----------------------------------------------------------------------------
andrewm@0: //
andrewm@0: inline void
andrewm@0: DistortionAudioProcessor::SetGainIndB(float gainIndB)
andrewm@0: {
andrewm@0: 	_gainIndB = gainIndB;
andrewm@0: }
andrewm@0: 
andrewm@0: 
andrewm@0: //-----------------------------------------------------------------------------
andrewm@0: //
andrewm@0: inline DistortionAudioProcessor::Types
andrewm@0: DistortionAudioProcessor::GetType()
andrewm@0: {
andrewm@0: 	return _typeNumber;
andrewm@0: }
andrewm@0: 
andrewm@0: 
andrewm@0: //-----------------------------------------------------------------------------
andrewm@0: //
andrewm@0: inline void
andrewm@0: DistortionAudioProcessor::SetType(Types type)
andrewm@0: {
andrewm@0: 	_typeNumber = type;
andrewm@0: }
andrewm@0: 
andrewm@0: #endif  // __PLUGINPROCESSOR_H_88534BAA__