File: config.h

package info (click to toggle)
sdl-mixer1.2 1.2.12-15
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 13,732 kB
  • sloc: ansic: 18,763; sh: 9,453; objc: 1,482; cpp: 238; csh: 219; makefile: 145
file content (226 lines) | stat: -rw-r--r-- 7,489 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
/*
    TiMidity -- Experimental MIDI to WAVE converter
    Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the Perl Artistic License, available in COPYING.
 */

/* This is for use with the SDL library */
#define SDL
#include "SDL_config.h"
#include "SDL_endian.h"

#define TIMIDITY_ERROR_SIZE 1024

/* When a patch file can't be opened, one of these extensions is
   appended to the filename and the open is tried again.
 */
#define PATCH_EXT_LIST { ".pat", 0 }

/* Acoustic Grand Piano seems to be the usual default instrument. */
#define DEFAULT_PROGRAM 0

/* 9 here is MIDI channel 10, which is the standard percussion channel.
   Some files (notably C:\WINDOWS\CANYON.MID) think that 16 is one too. 
   On the other hand, some files know that 16 is not a drum channel and
   try to play music on it. This is now a runtime option, so this isn't
   a critical choice anymore. */
#define DEFAULT_DRUMCHANNELS (1<<9)

/* A somewhat arbitrary frequency range. The low end of this will
   sound terrible as no lowpass filtering is performed on most
   instruments before resampling. */
#define MIN_OUTPUT_RATE 	4000
#define MAX_OUTPUT_RATE 	65000

/* In percent. */
/* #define DEFAULT_AMPLIFICATION 	70 */
/* #define DEFAULT_AMPLIFICATION 	50 */
#define DEFAULT_AMPLIFICATION 	30

/* Default sampling rate, default polyphony, and maximum polyphony.
   All but the last can be overridden from the command line. */
#define DEFAULT_RATE	32000
/* #define DEFAULT_VOICES	32 */
/* #define MAX_VOICES	48 */
#define DEFAULT_VOICES	256
#define MAX_VOICES	256
#define MAXCHAN		16
/* #define MAXCHAN		64 */
#define MAXNOTE		128

/* 1000 here will give a control ratio of 22:1 with 22 kHz output.
   Higher CONTROLS_PER_SECOND values allow more accurate rendering
   of envelopes and tremolo. The cost is CPU time. */
#define CONTROLS_PER_SECOND 1000

/* Strongly recommended. This option increases CPU usage by half, but
   without it sound quality is very poor. */
#define LINEAR_INTERPOLATION

/* This is an experimental kludge that needs to be done right, but if
   you've got an 8-bit sound card, or cheap multimedia speakers hooked
   to your 16-bit output device, you should definitely give it a try.

   Defining LOOKUP_HACK causes table lookups to be used in mixing
   instead of multiplication. We convert the sample data to 8 bits at
   load time and volumes to logarithmic 7-bit values before looking up
   the product, which degrades sound quality noticeably.

   Defining LOOKUP_HACK should save ~20% of CPU on an Intel machine.
   LOOKUP_INTERPOLATION might give another ~5% */
/* #define LOOKUP_HACK
   #define LOOKUP_INTERPOLATION */

/* Make envelopes twice as fast. Saves ~20% CPU time (notes decay
   faster) and sounds more like a GUS. There is now a command line
   option to toggle this as well. */
/* #define FAST_DECAY */

/* How many bits to use for the fractional part of sample positions.
   This affects tonal accuracy. The entire position counter must fit
   in 32 bits, so with FRACTION_BITS equal to 12, the maximum size of
   a sample is 1048576 samples (2 megabytes in memory). The GUS gets
   by with just 9 bits and a little help from its friends...
   "The GUS does not SUCK!!!" -- a happy user :) */
#define FRACTION_BITS 12

#define MAX_SAMPLE_SIZE (1 << (32-FRACTION_BITS))

typedef double FLOAT_T;

/* For some reason the sample volume is always set to maximum in all
   patch files. Define this for a crude adjustment that may help
   equalize instrument volumes. */
#define ADJUST_SAMPLE_VOLUMES

/* The number of samples to use for ramping out a dying note. Affects
   click removal. */
#define MAX_DIE_TIME 20

/* On some machines (especially PCs without math coprocessors),
   looking up sine values in a table will be significantly faster than
   computing them on the fly. Uncomment this to use lookups. */
/* #define LOOKUP_SINE */

/* Shawn McHorse's resampling optimizations. These may not in fact be
   faster on your particular machine and compiler. You'll have to run
   a benchmark to find out. */
#define PRECALC_LOOPS

/* If calling ldexp() is faster than a floating point multiplication
   on your machine/compiler/libm, uncomment this. It doesn't make much
   difference either way, but hey -- it was on the TODO list, so it
   got done. */
/* #define USE_LDEXP */

/**************************************************************************/
/* Anything below this shouldn't need to be changed unless you're porting
   to a new machine with other than 32-bit, big-endian words. */
/**************************************************************************/

/* change FRACTION_BITS above, not these */
#define INTEGER_BITS (32 - FRACTION_BITS)
#define INTEGER_MASK (0xFFFFFFFF << FRACTION_BITS)
#define FRACTION_MASK (~ INTEGER_MASK)

/* This is enforced by some computations that must fit in an int */
#define MAX_CONTROL_RATIO 255

typedef unsigned int uint32;
typedef int int32; 
typedef unsigned short uint16;
typedef short int16;
typedef unsigned char uint8;
typedef char int8;

/* Instrument files are little-endian, MIDI files big-endian, so we
   need to do some conversions. */

#define XCHG_SHORT(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
# define XCHG_LONG(x) ((((x)&0xFF)<<24) | \
		      (((x)&0xFF00)<<8) | \
		      (((x)&0xFF0000)>>8) | \
		      (((x)>>24)&0xFF))

#if SDL_BYTEORDER == SDL_LIL_ENDIAN
#define LE_SHORT(x) x
#define LE_LONG(x) x
#define BE_SHORT(x) XCHG_SHORT(x)
#define BE_LONG(x) XCHG_LONG(x)
#else
#define BE_SHORT(x) x
#define BE_LONG(x) x
#define LE_SHORT(x) XCHG_SHORT(x)
#define LE_LONG(x) XCHG_LONG(x)
#endif

#define MAX_AMPLIFICATION 800

/* You could specify a complete path, e.g. "/etc/timidity.cfg", and
   then specify the library directory in the configuration file. */
#define CONFIG_FILE	"timidity.cfg"
#define CONFIG_FILE_ETC "/etc/timidity.cfg"
#define CONFIG_FILE_ETC_TIMIDITY_FREEPATS "/etc/timidity/freepats.cfg"

#if defined(__WIN32__) || defined(__OS2__)
#define DEFAULT_PATH	"C:\\TIMIDITY"
#else
#define DEFAULT_PATH	"/etc/timidity"
#define DEFAULT_PATH1	"/usr/share/timidity"
#define DEFAULT_PATH2	"/usr/local/share/timidity"
#define DEFAULT_PATH3	"/usr/local/lib/timidity"
#endif

/* These affect general volume */
#define GUARD_BITS 3
#define AMP_BITS (15-GUARD_BITS)

#ifdef LOOKUP_HACK
   typedef int8 sample_t;
   typedef uint8 final_volume_t;
#  define FINAL_VOLUME(v) (~_l2u[v])
#  define MIXUP_SHIFT 5
#  define MAX_AMP_VALUE 4095
#else
   typedef int16 sample_t;
   typedef int32 final_volume_t;
#  define FINAL_VOLUME(v) (v)
#  define MAX_AMP_VALUE ((1<<(AMP_BITS+1))-1)
#endif

typedef int16 resample_t;

#ifdef USE_LDEXP
#  define FSCALE(a,b) ldexp((a),(b))
#  define FSCALENEG(a,b) ldexp((a),-(b))
#else
#  define FSCALE(a,b) (float)((a) * (double)(1<<(b)))
#  define FSCALENEG(a,b) (float)((a) * (1.0L / (double)(1<<(b))))
#endif

/* Vibrato and tremolo Choices of the Day */
#define SWEEP_TUNING 38
#define VIBRATO_AMPLITUDE_TUNING 1.0L
#define VIBRATO_RATE_TUNING 38
#define TREMOLO_AMPLITUDE_TUNING 1.0L
#define TREMOLO_RATE_TUNING 38

#define SWEEP_SHIFT 16
#define RATE_SHIFT 5

#define VIBRATO_SAMPLE_INCREMENTS 32

#ifndef PI
  #define PI 3.14159265358979323846
#endif

/* The path separator (D.M.) */
#if defined(__WIN32__) || defined(__OS2__)
#  define PATH_SEP '\\'
#  define PATH_STRING "\\"
#else
#  define PATH_SEP '/'
#  define PATH_STRING "/"
#endif