/* ZynAddSubFX - a software synthesizer OscilGen.h - Waveform generator for ADnote Copyright (C) 2002-2005 Nasca Octavian Paul Author: Nasca Octavian Paul This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation. This program 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 (version 2 or later) for more details. You should have received a copy of the GNU General Public License (version 2) along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef OSCIL_GEN_H #define OSCIL_GEN_H #include "../globals.h" #include "../Misc/XMLwrapper.h" #include "../DSP/FFTwrapper.h" #include "../Params/Presets.h" #include "Resonance.h" class OscilGen:public Presets { public: OscilGen(FFTwrapper *fft_, Resonance *res_); ~OscilGen(); /**computes the full spectrum of oscil from harmonics,phases and basefunc*/ void prepare(); /**do the antialiasing(cut off higher freqs.),apply randomness and do a IFFT*/ //returns where should I start getting samples, used in block type randomness short get(float *smps, float freqHz, int resonance = 0); //if freqHz is smaller than 0, return the "un-randomized" sample for UI void getbasefunction(float *smps); //called by UI void getspectrum(int n, float *spc, int what); //what=0 pt. oscil,1 pt. basefunc void getcurrentbasefunction(float *smps); /**convert oscil to base function*/ void useasbase(); void add2XML(XMLwrapper *xml); void defaults(); void getfromXML(XMLwrapper *xml); void convert2sine(); //Parameters /** * The hmag and hphase starts counting from 0, so the first harmonic(1) has the index 0, * 2-nd harmonic has index 1, ..the 128 harminic has index 127 */ unsigned char Phmag[MAX_AD_HARMONICS], Phphase[MAX_AD_HARMONICS]; //the MIDI parameters for mag. and phases /**The Type of magnitude: * 0 - Linear * 1 - dB scale (-40) * 2 - dB scale (-60) * 3 - dB scale (-80) * 4 - dB scale (-100)*/ unsigned char Phmagtype; unsigned char Pcurrentbasefunc; //The base function used - 0=sin, 1=... unsigned char Pbasefuncpar; //the parameter of the base function unsigned char Pbasefuncmodulation; //what modulation is applied to the basefunc unsigned char Pbasefuncmodulationpar1, Pbasefuncmodulationpar2, Pbasefuncmodulationpar3; //the parameter of the base function modulation /*the Randomness: 64=no randomness 63..0 - block type randomness - 0 is maximum 65..127 - each harmonic randomness - 127 is maximum*/ unsigned char Prand; unsigned char Pwaveshaping, Pwaveshapingfunction; unsigned char Pfiltertype, Pfilterpar1, Pfilterpar2; unsigned char Pfilterbeforews; unsigned char Psatype, Psapar; //spectrum adjust unsigned char Pamprandpower, Pamprandtype; //amplitude randomness int Pharmonicshift; //how the harmonics are shifted int Pharmonicshiftfirst; //if the harmonic shift is done before waveshaping and filter unsigned char Padaptiveharmonics; //the adaptive harmonics status (off=0,on=1,etc..) unsigned char Padaptiveharmonicsbasefreq; //the base frequency of the adaptive harmonic (30..3000Hz) unsigned char Padaptiveharmonicspower; //the strength of the effect (0=off,100=full) unsigned char Padaptiveharmonicspar; //the parameters in 2,3,4.. modes of adaptive harmonics unsigned char Pmodulation; //what modulation is applied to the oscil unsigned char Pmodulationpar1, Pmodulationpar2, Pmodulationpar3; //the parameter of the parameters //makes a new random seed for Amplitude Randomness //this should be called every note on event void newrandseed(unsigned int randseed); bool ADvsPAD; //if it is used by ADsynth or by PADsynth private: //This array stores some termporary data and it has OSCIL_SIZE elements float *tmpsmps; fft_t *outoscilFFTfreqs; float hmag[MAX_AD_HARMONICS], hphase[MAX_AD_HARMONICS]; //the magnituides and the phases of the sine/nonsine harmonics // private: FFTwrapper *fft; //computes the basefunction and make the FFT; newbasefunc<0 = same basefunc void changebasefunction(); //Waveshaping void waveshape(); //Filter the oscillator accotding to Pfiltertype and Pfilterpar void oscilfilter(); //Adjust the spectrum void spectrumadjust(); //Shift the harmonics void shiftharmonics(); //Do the oscil modulation stuff void modulation(); //Check system for needed updates bool needPrepare(void); //Do the adaptive harmonic stuff void adaptiveharmonic(fft_t *f, float freq); //Do the adaptive harmonic postprocessing (2n+1,2xS,2xA,etc..) //this function is called even for the user interface //this can be called for the sine and components, and for the spectrum //(that's why the sine and cosine components should be processed with a separate call) void adaptiveharmonicpostprocess(fft_t *f, int size); //Internal Data unsigned char oldbasefunc, oldbasepar, oldhmagtype, oldwaveshapingfunction, oldwaveshaping; int oldfilterpars, oldsapars, oldbasefuncmodulation, oldbasefuncmodulationpar1, oldbasefuncmodulationpar2, oldbasefuncmodulationpar3, oldharmonicshift; int oldmodulation, oldmodulationpar1, oldmodulationpar2, oldmodulationpar3; fft_t *basefuncFFTfreqs; //Base Function Frequencies fft_t *oscilFFTfreqs; //Oscillator Frequencies - this is different than the hamonics set-up by the user, it may contains time-domain data if the antialiasing is turned off int oscilprepared; //1 if the oscil is prepared, 0 if it is not prepared and is need to call ::prepare() before ::get() Resonance *res; unsigned int randseed; }; typedef float (*filter_func)(unsigned int, float, float); filter_func getFilter(unsigned char func); typedef float (*base_func)(float, float); base_func getBaseFunction(unsigned char func); #endif