config.h (6902B)
1 /* 2 TiMidity -- Experimental MIDI to WAVE converter 3 Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi> 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 */ 19 20 /* This is for use with the SDL library */ 21 #define SDL 22 #if (defined(WIN32) || defined(_WIN32)) && !defined(__WIN32__) 23 #define __WIN32__ 24 #endif 25 26 #define LITTLE_ENDIAN 27 28 #include <stdint.h> 29 30 /* When a patch file can't be opened, one of these extensions is 31 appended to the filename and the open is tried again. 32 */ 33 #define PATCH_EXT_LIST { ".pat", 0 } 34 35 /* Acoustic Grand Piano seems to be the usual default instrument. */ 36 #define DEFAULT_PROGRAM 0 37 38 /* 9 here is MIDI channel 10, which is the standard percussion channel. 39 Some files (notably C:\WINDOWS\CANYON.MID) think that 16 is one too. 40 On the other hand, some files know that 16 is not a drum channel and 41 try to play music on it. This is now a runtime option, so this isn't 42 a critical choice anymore. */ 43 //#define DEFAULT_DRUMCHANNELS ((1<<9) | (1<<15)) 44 #define DEFAULT_DRUMCHANNELS ((1<<9)) 45 46 /* A somewhat arbitrary frequency range. The low end of this will 47 sound terrible as no lowpass filtering is performed on most 48 instruments before resampling. */ 49 #define MIN_OUTPUT_RATE 4000 50 #define MAX_OUTPUT_RATE 65000 51 52 /* In percent. */ 53 #define DEFAULT_AMPLIFICATION 70 54 55 /* Default sampling rate, default polyphony, and maximum polyphony. 56 All but the last can be overridden from the command line. */ 57 #define DEFAULT_RATE 32000 58 #define DEFAULT_VOICES 32 59 #define MAX_VOICES 48 60 61 /* 1000 here will give a control ratio of 22:1 with 22 kHz output. 62 Higher CONTROLS_PER_SECOND values allow more accurate rendering 63 of envelopes and tremolo. The cost is CPU time. */ 64 #define CONTROLS_PER_SECOND 1000 65 66 /* Strongly recommended. This option increases CPU usage by half, but 67 without it sound quality is very poor. */ 68 #define LINEAR_INTERPOLATION 69 70 /* This is an experimental kludge that needs to be done right, but if 71 you've got an 8-bit sound card, or cheap multimedia speakers hooked 72 to your 16-bit output device, you should definitely give it a try. 73 74 Defining LOOKUP_HACK causes table lookups to be used in mixing 75 instead of multiplication. We convert the sample data to 8 bits at 76 load time and volumes to logarithmic 7-bit values before looking up 77 the product, which degrades sound quality noticeably. 78 79 Defining LOOKUP_HACK should save ~20% of CPU on an Intel machine. 80 LOOKUP_INTERPOLATION might give another ~5% */ 81 /* #define LOOKUP_HACK 82 #define LOOKUP_INTERPOLATION */ 83 84 /* Make envelopes twice as fast. Saves ~20% CPU time (notes decay 85 faster) and sounds more like a GUS. There is now a command line 86 option to toggle this as well. */ 87 #define FAST_DECAY 88 89 /* How many bits to use for the fractional part of sample positions. 90 This affects tonal accuracy. The entire position counter must fit 91 in 32 bits, so with FRACTION_BITS equal to 12, the maximum size of 92 a sample is 1048576 samples (2 megabytes in memory). The GUS gets 93 by with just 9 bits and a little help from its friends... 94 "The GUS does not SUCK!!!" -- a happy user :) */ 95 #define FRACTION_BITS 12 96 97 /* For some reason the sample volume is always set to maximum in all 98 patch files. Define this for a crude adjustment that may help 99 equalize instrument volumes. */ 100 #define ADJUST_SAMPLE_VOLUMES 101 102 /* The number of samples to use for ramping out a dying note. Affects 103 click removal. */ 104 #define MAX_DIE_TIME 20 105 106 /* On some machines (especially PCs without math coprocessors), 107 looking up sine values in a table will be significantly faster than 108 computing them on the fly. Uncomment this to use lookups. */ 109 /* #define LOOKUP_SINE */ 110 111 /* Shawn McHorse's resampling optimizations. These may not in fact be 112 faster on your particular machine and compiler. You'll have to run 113 a benchmark to find out. */ 114 #define PRECALC_LOOPS 115 116 /* If calling ldexp() is faster than a floating point multiplication 117 on your machine/compiler/libm, uncomment this. It doesn't make much 118 difference either way, but hey -- it was on the TODO list, so it 119 got done. */ 120 /* #define USE_LDEXP */ 121 122 /**************************************************************************/ 123 /* Anything below this shouldn't need to be changed unless you're porting 124 to a new machine with other than 32-bit, big-endian words. */ 125 /**************************************************************************/ 126 127 /* change FRACTION_BITS above, not these */ 128 #define INTEGER_BITS (32 - FRACTION_BITS) 129 #define INTEGER_MASK (0xFFFFFFFF << FRACTION_BITS) 130 #define FRACTION_MASK (~ INTEGER_MASK) 131 132 /* This is enforced by some computations that must fit in an int */ 133 #define MAX_CONTROL_RATIO 255 134 135 /* Instrument files are little-endian, MIDI files big-endian, so we 136 need to do some conversions. */ 137 138 #define XCHG_SHORT(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF)) 139 # define XCHG_LONG(x) ((((x)&0xFF)<<24) | \ 140 (((x)&0xFF00)<<8) | \ 141 (((x)&0xFF0000)>>8) | \ 142 (((x)>>24)&0xFF)) 143 144 #ifdef LITTLE_ENDIAN 145 #define LE_SHORT(x) x 146 #define LE_LONG(x) x 147 #define BE_SHORT(x) XCHG_SHORT(x) 148 #define BE_LONG(x) XCHG_LONG(x) 149 #else 150 #define BE_SHORT(x) x 151 #define BE_LONG(x) x 152 #define LE_SHORT(x) XCHG_SHORT(x) 153 #define LE_LONG(x) XCHG_LONG(x) 154 #endif 155 156 #define MAX_AMPLIFICATION 800 157 158 /* These affect general volume */ 159 #define GUARD_BITS 3 160 #define AMP_BITS (15-GUARD_BITS) 161 162 #ifdef LOOKUP_HACK 163 typedef int8_t sample_t; 164 typedef uint8_t final_volume_t; 165 # define FINAL_VOLUME(v) (~_l2u[v]) 166 # define MIXUP_SHIFT 5 167 # define MAX_AMP_VALUE 4095 168 #else 169 typedef int16_t sample_t; 170 typedef int32_t final_volume_t; 171 # define FINAL_VOLUME(v) (v) 172 # define MAX_AMP_VALUE ((1<<(AMP_BITS+1))-1) 173 #endif 174 175 #ifdef USE_LDEXP 176 # define FSCALE(a,b) ldexp((a),(b)) 177 # define FSCALENEG(a,b) ldexp((a),-(b)) 178 #else 179 # define FSCALE(a,b) (float)((a) * (double)(1<<(b))) 180 # define FSCALENEG(a,b) (float)((a) * (1.0L / (double)(1<<(b)))) 181 #endif 182 183 /* Vibrato and tremolo Choices of the Day */ 184 #define SWEEP_TUNING 38 185 #define VIBRATO_AMPLITUDE_TUNING 1.0L 186 #define VIBRATO_RATE_TUNING 38 187 #define TREMOLO_AMPLITUDE_TUNING 1.0L 188 #define TREMOLO_RATE_TUNING 38 189 190 #define SWEEP_SHIFT 16 191 #define RATE_SHIFT 5 192 193 #define VIBRATO_SAMPLE_INCREMENTS 32 194 195 #ifndef PI 196 const float PI = 3.14159265358979323846f; 197 #endif 198 199 /* The path separator (D.M.) */ 200 //#ifdef __WIN32__ 201 # define PATH_SEP '\\' 202 # define PATH_STRING "\\" 203 //#else 204 //# define PATH_SEP '/' 205 //# define PATH_STRING "/" 206 //#endif