globals.h

   1 /*
   2   ZynAddSubFX - a software synthesizer
   3
   4   globals.h - it contains program settings and the program capabilities
   5               like number of parts, of effects
   6   Copyright (C) 2002-2005 Nasca Octavian Paul
   7   Author: Nasca Octavian Paul
   8
   9   This program is free software; you can redistribute it and/or modify
  10   it under the terms of version 2 of the GNU General Public License
  11   as published by the Free Software Foundation.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License (version 2) for more details.
  17
  18   You should have received a copy of the GNU General Public License (version 2)
  19   along with this program; if not, write to the Free Software Foundation,
  20   Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21
  22 */
  23
  24
  25 #ifndef GLOBALS_H
  26 #define GLOBALS_H
  27
  28 #include "common.h"
  29 #include "util.h"
  30
  31 /*
  32  * The size of ADnote Oscillator
  33  * Decrease this => poor quality
  34  * Increase this => CPU requirements gets high (only at start of the note)
  35  */
  36 #define OSCIL_SIZE 512
  37
  38 /*
  39  * The number of harmonics of additive synth
  40  * This must be smaller than OSCIL_SIZE/2
  41  */
  42 #define MAX_AD_HARMONICS 128
  43
  44
  45 /*
  46  * The number of harmonics of substractive
  47  */
  48 #define MAX_SUB_HARMONICS 64
  49
  50
  51 /*
  52  * The maximum number of samples that are used for 1 PADsynth instrument(or item)
  53  */
  54 #define PAD_MAX_SAMPLES 64
  55
  56
  57 /*
  58  * Number of parts
  59  */
  60 #define NUM_MIDI_PARTS 16
  61
  62 /*
  63  * Number of Midi channes
  64  */
  65 #define NUM_MIDI_CHANNELS 16
  66
  67 /*
  68  * Number of system effects
  69  */
  70 #define NUM_SYS_EFX 4
  71
  72
  73 /*
  74  * Number of insertion effects
  75  */
  76 #define NUM_INS_EFX 8
  77
  78 /*
  79  * Number of part's insertion effects
  80  */
  81 #define NUM_PART_EFX 3
  82
  83 /*
  84  * Maximum number of the instrument on a part
  85  */
  86 #define NUM_KIT_ITEMS 16
  87
  88
  89 /*
  90  * The maximum length of instrument's name
  91  */
  92 #define PART_MAX_NAME_LEN 30
  93
  94 /*
  95  * The maximum number of bands of the equaliser
  96  */
  97 #define MAX_EQ_BANDS 8
  98 #if (MAX_EQ_BANDS>=20)
  99 #error "Too many EQ bands in globals.h"
 100 #endif
 101
 102
 103 /*
 104  * Maximum filter stages
 105  */
 106 #define MAX_FILTER_STAGES 5
 107
 108 /*
 109  * Formant filter (FF) limits
 110  */
 111 #define FF_MAX_VOWELS 6
 112 #define FF_MAX_FORMANTS 12
 113 #define FF_MAX_SEQUENCE 8
 114
 115 #define LOG_2 0.693147181       // natural logarithm of 2
 116 #define PI 3.1415926536
 117 #define LOG_10 2.302585093      // natural logarithm of 10
 118
 119 /*
 120  * The threshold for the amplitude interpolation used if the amplitude
 121  * is changed (by LFO's or Envelope's). If the change of the amplitude
 122  * is below this, the amplitude is not interpolated
 123  */
 124 #define AMPLITUDE_INTERPOLATION_THRESHOLD 0.0001
 125
 126 /*
 127  * How the amplitude threshold is computed
 128  */
 129 #define ABOVE_AMPLITUDE_THRESHOLD(a,b) ( ( 2.0*fabs( (b) - (a) ) /  \
 130       ( fabs( (b) + (a) + 0.0000000001) ) ) > AMPLITUDE_INTERPOLATION_THRESHOLD )
 131
 132 /*
 133  * Interpolate Amplitude
 134  */
 135 #define INTERPOLATE_AMPLITUDE(a,b,x,size) ( (a) + \
 136       ( (b) - (a) ) * (REALTYPE)(x) / (REALTYPE) (size) )
 137
 138
 139 /*
 140  * dB
 141  */
 142 #define dB2rap(dB) ((exp((dB)*LOG_10/20.0)))
 143 #define rap2dB(rap) ((20*log(rap)/LOG_10))
 144
 145 #define RND zyn_random()        // legacy
 146
 147 #define ZERO(data,size) {char *data_=(char *) data;for (int i=0;i<size;i++) data_[i]=0;};
 148
 149 enum MidiControllers{C_NULL=0,C_pitchwheel=1000,C_expression=11,C_panning=10,
 150     C_filtercutoff=74,C_filterq=71,C_bandwidth=75,C_modwheel=1,C_fmamp=76,
 151     C_volume=7,C_sustain=64,C_allnotesoff=123,C_allsoundsoff=120,C_resetallcontrollers=121,
 152     C_portamento=65,C_resonance_center=77,C_resonance_bandwidth=78,
 153
 154     C_dataentryhi=0x06,C_dataentrylo=0x26,C_nrpnhi=99,C_nrpnlo=98};
 155
 156
 157 //is like i=(int)(floor(f))
 158 #ifdef ASM_F2I_YES
 159 #define F2I(f,i) __asm__ __volatile__ ("fistpl %0" : "=m" (i) : "t" (f-0.49999999) : "st") ;
 160 #else
 161 #define F2I(f,i) (i)=((f>0) ? ( (int)(f) ) :( (int)(f-1.0) ));
 162 #endif
 163
 164
 165
 166 #ifndef  O_BINARY
 167 #define O_BINARY 0
 168 #endif
 169
 170 #endif
 171