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comparison decoders/timidity/options.h @ 199:2d887640d300

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Initial add.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 04 Jan 2002 06:49:49 +0000
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198:f9a752f41ab6 199:2d887640d300
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 /* When a patch file can't be opened, one of these extensions is
21 appended to the filename and the open is tried again.
22 */
23 #define PATCH_EXT_LIST { ".pat", 0 }
24
25 /* Acoustic Grand Piano seems to be the usual default instrument. */
26 #define DEFAULT_PROGRAM 0
27
28 /* 9 here is MIDI channel 10, which is the standard percussion channel.
29 Some files (notably C:\WINDOWS\CANYON.MID) think that 16 is one too.
30 On the other hand, some files know that 16 is not a drum channel and
31 try to play music on it. This is now a runtime option, so this isn't
32 a critical choice anymore. */
33 #define DEFAULT_DRUMCHANNELS ((1<<9) | (1<<15))
34
35 /* In percent. */
36 #define DEFAULT_AMPLIFICATION 70
37
38 /* Default polyphony */
39 #define DEFAULT_VOICES 32
40
41 /* 1000 here will give a control ratio of 22:1 with 22 kHz output.
42 Higher CONTROLS_PER_SECOND values allow more accurate rendering
43 of envelopes and tremolo. The cost is CPU time. */
44 #define CONTROLS_PER_SECOND 1000
45
46 /* Make envelopes twice as fast. Saves ~20% CPU time (notes decay
47 faster) and sounds more like a GUS. There is now a command line
48 option to toggle this as well. */
49 #define FAST_DECAY
50
51 /* How many bits to use for the fractional part of sample positions.
52 This affects tonal accuracy. The entire position counter must fit
53 in 32 bits, so with FRACTION_BITS equal to 12, the maximum size of
54 a sample is 1048576 samples (2 megabytes in memory). The GUS gets
55 by with just 9 bits and a little help from its friends...
56 "The GUS does not SUCK!!!" -- a happy user :) */
57 #define FRACTION_BITS 12
58
59 /* For some reason the sample volume is always set to maximum in all
60 patch files. Define this for a crude adjustment that may help
61 equalize instrument volumes. */
62 #define ADJUST_SAMPLE_VOLUMES
63
64 /* The number of samples to use for ramping out a dying note. Affects
65 click removal. */
66 #define MAX_DIE_TIME 20
67
68 /**************************************************************************/
69 /* Anything below this shouldn't need to be changed unless you're porting
70 to a new machine with other than 32-bit, big-endian words. */
71 /**************************************************************************/
72
73 /* change FRACTION_BITS above, not these */
74 #define INTEGER_MASK (0xFFFFFFFF << FRACTION_BITS)
75 #define FRACTION_MASK (~ INTEGER_MASK)
76
77 /* This is enforced by some computations that must fit in an int */
78 #define MAX_CONTROL_RATIO 255
79
80 #define MAX_AMPLIFICATION 800
81
82 /* The TiMidity configuration file */
83 #define CONFIG_FILE "timidity.cfg"
84
85 /* These affect general volume */
86 #define GUARD_BITS 3
87 #define AMP_BITS (15-GUARD_BITS)
88
89 #define MAX_AMP_VALUE ((1<<(AMP_BITS+1))-1)
90
91 #define FSCALE(a,b) (float)((a) * (double)(1<<(b)))
92 #define FSCALENEG(a,b) (float)((a) * (1.0L / (double)(1<<(b))))
93
94 /* Vibrato and tremolo Choices of the Day */
95 #define SWEEP_TUNING 38
96 #define VIBRATO_AMPLITUDE_TUNING 1.0L
97 #define VIBRATO_RATE_TUNING 38
98 #define TREMOLO_AMPLITUDE_TUNING 1.0L
99 #define TREMOLO_RATE_TUNING 38
100
101 #define SWEEP_SHIFT 16
102 #define RATE_SHIFT 5
103
104 #ifndef PI
105 #define PI 3.14159265358979323846
106 #endif
107
108 /* The path separator (D.M.) */
109 #ifdef WIN32
110 # define PATH_SEP '\\'
111 #else
112 # define PATH_SEP '/'
113 #endif