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/*
ZynAddSubFX - a software synthesizer
globals.h - it contains program settings and the program capabilities
like number of parts, of effects
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) 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 GLOBALS_H
#define GLOBALS_H
//What float type I use for internal sampledata
#define REALTYPE float
struct FFTFREQS{
REALTYPE *s,*c;//sine and cosine components
};
extern void newFFTFREQS(FFTFREQS *f,int size);
extern void deleteFFTFREQS(FFTFREQS *f);
// Sampling rate
extern int SAMPLE_RATE;
/*
* The size of a sound buffer (or the granularity)
* All internal transfer of sound data use buffer of this size
* All parameters are constant during this period of time, exception
* some parameters(like amplitudes) which are linear interpolated.
* If you increase this you'll ecounter big latencies, but if you
* decrease this the CPU requirements gets high.
*/
extern int SOUND_BUFFER_SIZE;
/*
* The size of ADnote Oscillator
* Decrease this => poor quality
* Increase this => CPU requirements gets high (only at start of the note)
*/
extern int OSCIL_SIZE;
/*
* The number of harmonics of additive synth
* This must be smaller than OSCIL_SIZE/2
*/
#define MAX_AD_HARMONICS 128
/*
* The number of harmonics of substractive
*/
#define MAX_SUB_HARMONICS 64
/*
* The maximum number of samples that are used for 1 PADsynth instrument(or item)
*/
#define PAD_MAX_SAMPLES 64
/*
* Number of parts
*/
#define NUM_MIDI_PARTS 16
/*
* Number of Midi channes
*/
#define NUM_MIDI_CHANNELS 16
/*
* The number of voices of additive synth for a single note
*/
#define NUM_VOICES 8
/*
* The poliphony (notes)
*/
#define POLIPHONY 60
/*
* Number of system effects
*/
#define NUM_SYS_EFX 4
/*
* Number of insertion effects
*/
#define NUM_INS_EFX 8
/*
* Number of part's insertion effects
*/
#define NUM_PART_EFX 3
/*
* Maximum number of the instrument on a part
*/
#define NUM_KIT_ITEMS 16
/*
* How is applied the velocity sensing
*/
#define VELOCITY_MAX_SCALE 8.0
/*
* The maximum length of instrument's name
*/
#define PART_MAX_NAME_LEN 30
/*
* The maximum number of bands of the equaliser
*/
#define MAX_EQ_BANDS 8
#if (MAX_EQ_BANDS>=20)
#error "Too many EQ bands in globals.h"
#endif
/*
* Maximum filter stages
*/
#define MAX_FILTER_STAGES 5
/*
* Formant filter (FF) limits
*/
#define FF_MAX_VOWELS 6
#define FF_MAX_FORMANTS 12
#define FF_MAX_SEQUENCE 8
#define LOG_2 0.693147181
#define PI 3.1415926536
#define LOG_10 2.302585093
/*
* The threshold for the amplitude interpolation used if the amplitude
* is changed (by LFO's or Envelope's). If the change of the amplitude
* is below this, the amplitude is not interpolated
*/
#define AMPLITUDE_INTERPOLATION_THRESHOLD 0.0001
/*
* How the amplitude threshold is computed
*/
#define ABOVE_AMPLITUDE_THRESHOLD(a,b) ( ( 2.0*fabs( (b) - (a) ) / \
( fabs( (b) + (a) + 0.0000000001) ) ) > AMPLITUDE_INTERPOLATION_THRESHOLD )
/*
* Interpolate Amplitude
*/
#define INTERPOLATE_AMPLITUDE(a,b,x,size) ( (a) + \
( (b) - (a) ) * (REALTYPE)(x) / (REALTYPE) (size) )
/*
* dB
*/
#define dB2rap(dB) ((exp((dB)*LOG_10/20.0)))
#define rap2dB(rap) ((20*log(rap)/LOG_10))
/*
* The random generator (0.0..1.0)
*/
#define RND (rand()/(RAND_MAX+1.0))
#define ZERO(data,size) {char *data_=(char *) data;for (int i=0;i<size;i++) data_[i]=0;};
enum ONOFFTYPE{OFF=0,ON=1};
enum MidiControllers{C_NULL=0,C_pitchwheel=1000,C_expression=11,C_panning=10,
C_filtercutoff=74,C_filterq=71,C_bandwidth=75,C_modwheel=1,C_fmamp=76,
C_volume=7,C_sustain=64,C_allnotesoff=123,C_allsoundsoff=120,C_resetallcontrollers=121,
C_portamento=65,C_resonance_center=77,C_resonance_bandwidth=78,
C_dataentryhi=0x06,C_dataentrylo=0x26,C_nrpnhi=99,C_nrpnlo=98};
//is like i=(int)(floor(f))
#ifdef ASM_F2I_YES
#define F2I(f,i) __asm__ __volatile__ ("fistpl %0" : "=m" (i) : "t" (f-0.49999999) : "st") ;
#else
#define F2I(f,i) (i)=((f>0) ? ( (int)(f) ) :( (int)(f-1.0) ));
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
#endif
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