Mercurial > SDL_sound_CoreAudio
annotate decoders/timidity/timidity.c @ 254:a73c51c12452
Memory access fixes.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Mon, 11 Feb 2002 07:04:06 +0000 |
| parents | e122de403a2d |
| children | 3da217bd0e48 |
| rev | line source |
|---|---|
| 199 | 1 /* |
| 2 | |
| 3 TiMidity -- Experimental MIDI to WAVE converter | |
| 4 Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi> | |
| 5 | |
| 6 This program is free software; you can redistribute it and/or modify | |
| 7 it under the terms of the GNU General Public License as published by | |
| 8 the Free Software Foundation; either version 2 of the License, or | |
| 9 (at your option) any later version. | |
| 10 | |
| 11 This program is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 GNU General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with this program; if not, write to the Free Software | |
| 18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 19 | |
| 20 */ | |
| 21 | |
| 22 #if HAVE_CONFIG_H | |
| 23 # include <config.h> | |
| 24 #endif | |
| 25 | |
| 26 #include <stdio.h> | |
| 27 #include <stdlib.h> | |
| 28 #include <string.h> | |
| 29 | |
| 30 #include "SDL_sound.h" | |
| 31 | |
| 32 #define __SDL_SOUND_INTERNAL__ | |
| 33 #include "SDL_sound_internal.h" | |
| 34 | |
| 35 #include "timidity.h" | |
| 36 | |
| 37 #include "options.h" | |
| 38 #include "common.h" | |
| 39 #include "instrum.h" | |
| 40 #include "playmidi.h" | |
| 41 #include "readmidi.h" | |
| 42 #include "output.h" | |
| 43 | |
| 44 #include "tables.h" | |
| 45 | |
| 46 ToneBank *master_tonebank[128], *master_drumset[128]; | |
| 47 | |
| 48 static char def_instr_name[256] = ""; | |
| 49 | |
| 50 #define MAXWORDS 10 | |
| 51 | |
| 52 /* Quick-and-dirty fgets() replacement. */ | |
| 53 | |
| 54 static char *RWgets(SDL_RWops *rw, char *s, int size) | |
| 55 { | |
| 56 int num_read = 0; | |
| 57 int newline = 0; | |
| 58 | |
| 59 while (num_read < size && !newline) | |
| 60 { | |
| 61 if (SDL_RWread(rw, &s[num_read], 1, 1) != 1) | |
| 62 break; | |
| 63 | |
| 64 /* Unlike fgets(), don't store newline. Under Windows/DOS we'll | |
| 65 * probably get an extra blank line for every line that's being | |
| 66 * read, but that should be ok. | |
| 67 */ | |
| 68 if (s[num_read] == '\n' || s[num_read] == '\r') | |
| 69 { | |
| 70 s[num_read] = '\0'; | |
| 71 newline = 1; | |
| 72 } | |
| 73 | |
| 74 num_read++; | |
| 75 } | |
| 76 | |
| 77 s[num_read] = '\0'; | |
| 78 | |
| 79 return (num_read != 0) ? s : NULL; | |
| 80 } | |
| 81 | |
| 82 static int read_config_file(char *name) | |
| 83 { | |
| 84 SDL_RWops *rw; | |
| 85 char tmp[1024], *w[MAXWORDS], *cp; | |
| 86 ToneBank *bank=0; | |
| 87 int i, j, k, line=0, words; | |
| 88 static int rcf_count=0; | |
| 89 | |
| 90 if (rcf_count>50) | |
| 91 { | |
| 92 SNDDBG(("Probable source loop in configuration files\n")); | |
| 93 return (-1); | |
| 94 } | |
| 95 | |
| 96 if (!(rw=open_file(name))) | |
| 97 return -1; | |
| 98 | |
| 99 while (RWgets(rw, tmp, sizeof(tmp))) | |
| 100 { | |
| 101 line++; | |
| 102 w[words=0]=strtok(tmp, " \t\240"); | |
|
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103 if (!w[0]) continue; |
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104 |
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105 /* Originally the TiMidity++ extensions were prefixed like this */ |
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106 if (strcmp(w[0], "#extension") == 0) |
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107 words = -1; |
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108 else if (*w[0] == '#') |
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109 continue; |
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110 |
| 199 | 111 while (w[words] && *w[words] != '#' && (words < MAXWORDS)) |
| 112 w[++words]=strtok(0," \t\240"); | |
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113 |
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114 /* |
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115 * TiMidity++ adds a number of extensions to the config file format. |
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116 * Many of them are completely irrelevant to SDL_sound, but at least |
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117 * we shouldn't choke on them. |
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118 * |
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119 * Unfortunately the documentation for these extensions is often quite |
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120 * vague, gramatically strange or completely absent. |
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121 */ |
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122 if ( |
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123 !strcmp(w[0], "comm") /* "comm" program second */ |
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124 || !strcmp(w[0], "HTTPproxy") /* "HTTPproxy" hostname:port */ |
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125 || !strcmp(w[0], "FTPproxy") /* "FTPproxy" hostname:port */ |
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126 || !strcmp(w[0], "mailaddr") /* "mailaddr" your-mail-address */ |
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127 || !strcmp(w[0], "opt") /* "opt" timidity-options */ |
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128 ) |
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129 { |
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130 /* |
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131 * + "comm" sets some kind of comment -- the documentation is too |
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132 * vague for me to understand at this time. |
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133 * + "HTTPproxy", "FTPproxy" and "mailaddr" are for reading data |
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134 * over a network, rather than from the file system. |
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135 * + "opt" specifies default options for TiMidity++. |
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136 * |
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137 * These are all quite useless for our version of TiMidity, so |
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138 * they can safely remain no-ops. |
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139 */ |
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140 } else if (!strcmp(w[0], "timeout")) /* "timeout" program second */ |
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141 { |
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142 /* |
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143 * Specifies a timeout value of the program. A number of seconds |
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144 * before TiMidity kills the note. This may be useful to implement |
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145 * later, but I don't see any urgent need for it. |
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146 */ |
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147 SNDDBG(("FIXME: Implement \"timeout\" in TiMidity config.\n")); |
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148 } else if (!strcmp(w[0], "copydrumset") /* "copydrumset" drumset */ |
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149 || !strcmp(w[0], "copybank")) /* "copybank" bank */ |
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150 { |
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151 /* |
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152 * Copies all the settings of the specified drumset or bank to |
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153 * the current drumset or bank. May be useful later, but not a |
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154 * high priority. |
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155 */ |
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156 SNDDBG(("FIXME: Implement \"%s\" in TiMidity config.\n", w[0])); |
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157 } else if (!strcmp(w[0], "undef")) /* "undef" progno */ |
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158 { |
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159 /* |
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160 * Undefines the tone "progno" of the current tone bank (or |
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161 * drum set?). Not a high priority. |
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162 */ |
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163 SNDDBG(("FIXME: Implement \"undef\" in TiMidity config.\n")); |
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164 } else if (!strcmp(w[0], "altassign")) /* "altassign" prog1 prog2 ... */ |
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165 { |
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166 /* |
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167 * Sets the alternate assign for drum set. Whatever that's |
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168 * supposed to mean. |
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169 */ |
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170 SNDDBG(("FIXME: Implement \"altassign\" in TiMidity config.\n")); |
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171 } else if (!strcmp(w[0], "soundfont") |
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172 || !strcmp(w[0], "font")) |
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173 { |
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174 /* |
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175 * I can't find any documentation for these, but I guess they're |
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176 * an alternative way of loading/unloading instruments. |
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177 * |
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178 * "soundfont" sf_file "remove" |
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179 * "soundfont" sf_file ["order=" order] ["cutoff=" cutoff] |
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180 * ["reso=" reso] ["amp=" amp] |
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181 * "font" "exclude" bank preset keynote |
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182 * "font" "order" order bank preset keynote |
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183 */ |
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184 SNDDBG(("FIXME: Implmement \"%s\" in TiMidity config.\n", w[0])); |
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185 } else if (!strcmp(w[0], "progbase")) |
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186 { |
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187 /* |
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188 * The documentation for this makes absolutely no sense to me, but |
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189 * apparently it sets some sort of base offset for tone numbers. |
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190 * Why anyone would want to do this is beyond me. |
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191 */ |
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192 SNDDBG(("FIXME: Implement \"progbase\" in TiMidity config.\n")); |
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193 } else if (!strcmp(w[0], "map")) /* "map" name set1 elem1 set2 elem2 */ |
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194 { |
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195 /* |
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196 * This extension is the one we will need to implement, as it is |
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197 * used by the "eawpats". Unfortunately I cannot find any |
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198 * documentation whatsoever for it, but it looks like it's used |
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199 * for remapping one instrument to another somehow. |
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200 */ |
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201 SNDDBG(("FIXME: Implement \"map\" in TiMidity config.\n")); |
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202 } |
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203 |
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204 /* Standard TiMidity config */ |
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205 |
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206 else if (!strcmp(w[0], "dir")) |
| 199 | 207 { |
| 208 if (words < 2) | |
| 209 { | |
| 210 SNDDBG(("%s: line %d: No directory given\n", name, line)); | |
| 211 return -2; | |
| 212 } | |
| 213 for (i=1; i<words; i++) | |
| 214 add_to_pathlist(w[i]); | |
| 215 } | |
| 216 else if (!strcmp(w[0], "source")) | |
| 217 { | |
| 218 if (words < 2) | |
| 219 { | |
| 220 SNDDBG(("%s: line %d: No file name given\n", name, line)); | |
| 221 return -2; | |
| 222 } | |
| 223 for (i=1; i<words; i++) | |
| 224 { | |
| 225 rcf_count++; | |
| 226 read_config_file(w[i]); | |
| 227 rcf_count--; | |
| 228 } | |
| 229 } | |
| 230 else if (!strcmp(w[0], "default")) | |
| 231 { | |
| 232 if (words != 2) | |
| 233 { | |
| 234 SNDDBG(("%s: line %d: Must specify exactly one patch name\n", | |
| 235 name, line)); | |
| 236 return -2; | |
| 237 } | |
| 238 strncpy(def_instr_name, w[1], 255); | |
| 239 def_instr_name[255]='\0'; | |
| 240 } | |
| 241 else if (!strcmp(w[0], "drumset")) | |
| 242 { | |
| 243 if (words < 2) | |
| 244 { | |
| 245 SNDDBG(("%s: line %d: No drum set number given\n", name, line)); | |
| 246 return -2; | |
| 247 } | |
| 248 i=atoi(w[1]); | |
| 249 if (i<0 || i>127) | |
| 250 { | |
| 251 SNDDBG(("%s: line %d: Drum set must be between 0 and 127\n", | |
| 252 name, line)); | |
| 253 return -2; | |
| 254 } | |
| 255 if (!master_drumset[i]) | |
| 256 { | |
| 257 master_drumset[i] = safe_malloc(sizeof(ToneBank)); | |
| 258 memset(master_drumset[i], 0, sizeof(ToneBank)); | |
| 259 master_drumset[i]->tone = safe_malloc(128 * sizeof(ToneBankElement)); | |
| 260 memset(master_drumset[i]->tone, 0, 128 * sizeof(ToneBankElement)); | |
| 261 } | |
| 262 bank=master_drumset[i]; | |
| 263 } | |
| 264 else if (!strcmp(w[0], "bank")) | |
| 265 { | |
| 266 if (words < 2) | |
| 267 { | |
| 268 SNDDBG(("%s: line %d: No bank number given\n", name, line)); | |
| 269 return -2; | |
| 270 } | |
| 271 i=atoi(w[1]); | |
| 272 if (i<0 || i>127) | |
| 273 { | |
| 274 SNDDBG(("%s: line %d: Tone bank must be between 0 and 127\n", | |
| 275 name, line)); | |
| 276 return -2; | |
| 277 } | |
| 278 if (!master_tonebank[i]) | |
| 279 { | |
| 280 master_tonebank[i] = safe_malloc(sizeof(ToneBank)); | |
| 281 memset(master_tonebank[i], 0, sizeof(ToneBank)); | |
| 282 master_tonebank[i]->tone = safe_malloc(128 * sizeof(ToneBankElement)); | |
| 283 memset(master_tonebank[i]->tone, 0, 128 * sizeof(ToneBankElement)); | |
| 284 } | |
| 285 bank=master_tonebank[i]; | |
| 286 } | |
| 287 else | |
| 288 { | |
| 289 if ((words < 2) || (*w[0] < '0' || *w[0] > '9')) | |
| 290 { | |
| 291 SNDDBG(("%s: line %d: syntax error\n", name, line)); | |
| 292 return -2; | |
| 293 } | |
| 294 i=atoi(w[0]); | |
| 295 if (i<0 || i>127) | |
| 296 { | |
| 297 SNDDBG(("%s: line %d: Program must be between 0 and 127\n", | |
| 298 name, line)); | |
| 299 return -2; | |
| 300 } | |
| 301 if (!bank) | |
| 302 { | |
| 303 SNDDBG(("%s: line %d: Must specify tone bank or drum set before assignment\n", | |
| 304 name, line)); | |
| 305 return -2; | |
| 306 } | |
| 307 if (bank->tone[i].name) | |
| 308 free(bank->tone[i].name); | |
| 309 strcpy((bank->tone[i].name=safe_malloc(strlen(w[1])+1)),w[1]); | |
| 310 bank->tone[i].note=bank->tone[i].amp=bank->tone[i].pan= | |
| 311 bank->tone[i].strip_loop=bank->tone[i].strip_envelope= | |
| 312 bank->tone[i].strip_tail=-1; | |
| 313 | |
| 314 for (j=2; j<words; j++) | |
| 315 { | |
| 316 if (!(cp=strchr(w[j], '='))) | |
| 317 { | |
| 318 SNDDBG(("%s: line %d: bad patch option %s\n", name, line, w[j])); | |
| 319 return -2; | |
| 320 } | |
| 321 *cp++=0; | |
| 322 if (!strcmp(w[j], "amp")) | |
| 323 { | |
| 324 k=atoi(cp); | |
| 325 if ((k<0 || k>MAX_AMPLIFICATION) || (*cp < '0' || *cp > '9')) | |
| 326 { | |
| 327 SNDDBG(("%s: line %d: amplification must be between 0 and %d\n", | |
| 328 name, line, MAX_AMPLIFICATION)); | |
| 329 return -2; | |
| 330 } | |
| 331 bank->tone[i].amp=k; | |
| 332 } | |
| 333 else if (!strcmp(w[j], "note")) | |
| 334 { | |
| 335 k=atoi(cp); | |
| 336 if ((k<0 || k>127) || (*cp < '0' || *cp > '9')) | |
| 337 { | |
| 338 SNDDBG(("%s: line %d: note must be between 0 and 127\n", | |
| 339 name, line)); | |
| 340 return -2; | |
| 341 } | |
| 342 bank->tone[i].note=k; | |
| 343 } | |
| 344 else if (!strcmp(w[j], "pan")) | |
| 345 { | |
| 346 if (!strcmp(cp, "center")) | |
| 347 k=64; | |
| 348 else if (!strcmp(cp, "left")) | |
| 349 k=0; | |
| 350 else if (!strcmp(cp, "right")) | |
| 351 k=127; | |
| 352 else | |
| 353 k=((atoi(cp)+100) * 100) / 157; | |
| 354 if ((k<0 || k>127) || (k==0 && *cp!='-' && (*cp < '0' || *cp > '9'))) | |
| 355 { | |
| 356 SNDDBG(("%s: line %d: panning must be left, right, center, or between -100 and 100\n", | |
| 357 name, line)); | |
| 358 return -2; | |
| 359 } | |
| 360 bank->tone[i].pan=k; | |
| 361 } | |
| 362 else if (!strcmp(w[j], "keep")) | |
| 363 { | |
| 364 if (!strcmp(cp, "env")) | |
| 365 bank->tone[i].strip_envelope=0; | |
| 366 else if (!strcmp(cp, "loop")) | |
| 367 bank->tone[i].strip_loop=0; | |
| 368 else | |
| 369 { | |
| 370 SNDDBG(("%s: line %d: keep must be env or loop\n", name, line)); | |
| 371 return -2; | |
| 372 } | |
| 373 } | |
| 374 else if (!strcmp(w[j], "strip")) | |
| 375 { | |
| 376 if (!strcmp(cp, "env")) | |
| 377 bank->tone[i].strip_envelope=1; | |
| 378 else if (!strcmp(cp, "loop")) | |
| 379 bank->tone[i].strip_loop=1; | |
| 380 else if (!strcmp(cp, "tail")) | |
| 381 bank->tone[i].strip_tail=1; | |
| 382 else | |
| 383 { | |
| 384 SNDDBG(("%s: line %d: strip must be env, loop, or tail\n", | |
| 385 name, line)); | |
| 386 return -2; | |
| 387 } | |
| 388 } | |
| 389 else | |
| 390 { | |
| 391 SNDDBG(("%s: line %d: bad patch option %s\n", name, line, w[j])); | |
| 392 return -2; | |
| 393 } | |
| 394 } | |
| 395 } | |
| 396 } | |
| 397 SDL_RWclose(rw); | |
| 398 return 0; | |
| 399 } | |
| 400 | |
| 401 int Timidity_Init() | |
| 402 { | |
| 403 /* !!! FIXME: This may be ugly, but slightly less so than requiring the | |
| 404 * default search path to have only one element. I think. | |
| 405 * | |
| 406 * We only need to include the likely locations for the config | |
| 407 * file itself since that file should contain any other directory | |
| 408 * that needs to be added to the search path. | |
| 409 */ | |
| 410 #ifdef WIN32 | |
| 411 add_to_pathlist("\\TIMIDITY"); | |
| 412 #else | |
| 413 add_to_pathlist("/usr/local/lib/timidity"); | |
| 414 add_to_pathlist("/etc"); | |
| 415 #endif | |
| 416 | |
| 417 /* Allocate memory for the standard tonebank and drumset */ | |
| 418 master_tonebank[0] = safe_malloc(sizeof(ToneBank)); | |
| 419 memset(master_tonebank[0], 0, sizeof(ToneBank)); | |
| 420 master_tonebank[0]->tone = safe_malloc(128 * sizeof(ToneBankElement)); | |
| 421 memset(master_tonebank[0]->tone, 0, 128 * sizeof(ToneBankElement)); | |
| 422 | |
| 423 master_drumset[0] = safe_malloc(sizeof(ToneBank)); | |
| 424 memset(master_drumset[0], 0, sizeof(ToneBank)); | |
| 425 master_drumset[0]->tone = safe_malloc(128 * sizeof(ToneBankElement)); | |
| 426 memset(master_drumset[0]->tone, 0, 128 * sizeof(ToneBankElement)); | |
| 427 | |
| 428 return read_config_file(CONFIG_FILE); | |
| 429 } | |
| 430 | |
| 431 MidiSong *Timidity_LoadSong(SDL_RWops *rw, SDL_AudioSpec *audio) | |
| 432 { | |
| 433 MidiSong *song; | |
| 434 Sint32 events; | |
| 435 int i; | |
| 436 | |
| 437 if (rw == NULL) | |
| 438 return NULL; | |
| 439 | |
| 440 /* Allocate memory for the song */ | |
| 441 song = (MidiSong *)safe_malloc(sizeof(*song)); | |
| 442 memset(song, 0, sizeof(*song)); | |
| 443 | |
| 444 for (i = 0; i < 128; i++) | |
| 445 { | |
| 446 if (master_tonebank[i]) | |
| 447 { | |
| 448 song->tonebank[i] = safe_malloc(sizeof(ToneBank)); | |
| 254 | 449 memset(song->tonebank[i], 0, sizeof(ToneBank)); |
| 199 | 450 song->tonebank[i]->tone = master_tonebank[i]->tone; |
| 451 } | |
| 452 if (master_drumset[i]) | |
| 453 { | |
| 454 song->drumset[i] = safe_malloc(sizeof(ToneBank)); | |
| 254 | 455 memset(song->drumset[i], 0, sizeof(ToneBank)); |
| 199 | 456 song->drumset[i]->tone = master_drumset[i]->tone; |
| 457 } | |
| 458 } | |
| 459 | |
| 460 song->amplification = DEFAULT_AMPLIFICATION; | |
| 461 song->voices = DEFAULT_VOICES; | |
| 462 song->drumchannels = DEFAULT_DRUMCHANNELS; | |
| 463 | |
| 464 song->rw = rw; | |
| 465 | |
| 466 song->rate = audio->freq; | |
| 467 song->encoding = 0; | |
| 468 if ((audio->format & 0xFF) == 16) | |
| 469 song->encoding |= PE_16BIT; | |
| 470 if (audio->format & 0x8000) | |
| 471 song->encoding |= PE_SIGNED; | |
| 472 if (audio->channels == 1) | |
| 473 song->encoding |= PE_MONO; | |
| 474 switch (audio->format) { | |
| 475 case AUDIO_S8: | |
| 476 song->write = s32tos8; | |
| 477 break; | |
| 478 case AUDIO_U8: | |
| 479 song->write = s32tou8; | |
| 480 break; | |
| 481 case AUDIO_S16LSB: | |
| 482 song->write = s32tos16l; | |
| 483 break; | |
| 484 case AUDIO_S16MSB: | |
| 485 song->write = s32tos16b; | |
| 486 break; | |
| 487 case AUDIO_U16LSB: | |
| 488 song->write = s32tou16l; | |
| 489 break; | |
| 490 default: | |
| 491 SNDDBG(("Unsupported audio format")); | |
| 492 song->write = s32tou16l; | |
| 493 break; | |
| 494 } | |
| 495 | |
| 496 song->buffer_size = audio->samples; | |
| 497 song->resample_buffer = safe_malloc(audio->samples * sizeof(sample_t)); | |
| 498 song->common_buffer = safe_malloc(audio->samples * 2 * sizeof(Sint32)); | |
| 499 | |
| 500 song->control_ratio = audio->freq / CONTROLS_PER_SECOND; | |
| 501 if (song->control_ratio < 1) | |
| 502 song->control_ratio = 1; | |
| 503 else if (song->control_ratio > MAX_CONTROL_RATIO) | |
| 504 song->control_ratio = MAX_CONTROL_RATIO; | |
| 505 | |
| 506 song->lost_notes = 0; | |
| 507 song->cut_notes = 0; | |
| 508 | |
| 509 song->events = read_midi_file(song, &events, &song->samples); | |
| 510 | |
| 511 /* The RWops can safely be closed at this point, but let's make that the | |
| 512 * responsibility of the caller. | |
| 513 */ | |
| 514 | |
| 515 /* Make sure everything is okay */ | |
| 516 if (!song->events) { | |
| 517 free(song); | |
| 518 return(NULL); | |
| 519 } | |
| 520 | |
| 521 song->default_instrument = 0; | |
| 522 song->default_program = DEFAULT_PROGRAM; | |
| 523 | |
| 524 if (*def_instr_name) | |
| 525 set_default_instrument(song, def_instr_name); | |
| 526 | |
| 527 load_missing_instruments(song); | |
| 528 | |
| 529 return(song); | |
| 530 } | |
| 531 | |
| 532 void Timidity_FreeSong(MidiSong *song) | |
| 533 { | |
| 534 int i; | |
| 535 | |
| 536 free_instruments(song); | |
| 537 | |
| 538 for (i = 0; i < 128; i++) | |
| 539 { | |
| 540 if (song->tonebank[i]) | |
| 541 free(song->tonebank[i]); | |
| 542 if (song->drumset[i]) | |
| 543 free(song->drumset[i]); | |
| 544 } | |
| 545 | |
| 546 free(song->common_buffer); | |
| 547 free(song->resample_buffer); | |
| 548 free(song->events); | |
| 549 free(song); | |
| 550 } | |
| 551 | |
| 552 void Timidity_Exit(void) | |
| 553 { | |
| 554 int i; | |
| 555 | |
| 556 for (i = 0; i < 128; i++) | |
| 557 { | |
| 558 if (master_tonebank[i]) | |
| 559 { | |
| 560 free(master_tonebank[i]->tone); | |
| 561 free(master_tonebank[i]); | |
| 562 } | |
| 563 if (master_drumset[i]) | |
| 564 { | |
| 565 free(master_drumset[i]->tone); | |
| 566 free(master_drumset[i]); | |
| 567 } | |
| 568 } | |
| 569 | |
| 570 free_pathlist(); | |
| 571 } |