Mercurial > SDL_sound_CoreAudio
annotate decoders/timidity/instrum.c @ 447:c98a34c00069
Fixed MIDI decoding on bigendian systems.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 05 Aug 2003 10:07:20 +0000 |
| parents | 2d887640d300 |
| children | cbc2a4ffeeec |
| 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 instrum.c | |
| 21 | |
| 22 Code to load and unload GUS-compatible instrument patches. | |
| 23 | |
| 24 */ | |
| 25 | |
| 26 #if HAVE_CONFIG_H | |
| 27 # include <config.h> | |
| 28 #endif | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <string.h> | |
| 32 #include <stdlib.h> | |
| 33 | |
| 34 #include "SDL_sound.h" | |
| 35 | |
| 36 #define __SDL_SOUND_INTERNAL__ | |
| 37 #include "SDL_sound_internal.h" | |
| 38 | |
| 39 #include "timidity.h" | |
| 40 #include "options.h" | |
| 41 #include "common.h" | |
| 42 #include "instrum.h" | |
| 43 #include "resample.h" | |
| 44 #include "tables.h" | |
| 45 | |
| 46 static void free_instrument(Instrument *ip) | |
| 47 { | |
| 48 Sample *sp; | |
| 49 int i; | |
| 50 if (!ip) return; | |
| 51 for (i=0; i<ip->samples; i++) | |
| 52 { | |
| 53 sp=&(ip->sample[i]); | |
| 54 free(sp->data); | |
| 55 } | |
| 56 free(ip->sample); | |
| 57 free(ip); | |
| 58 } | |
| 59 | |
| 60 static void free_bank(MidiSong *song, int dr, int b) | |
| 61 { | |
| 62 int i; | |
| 63 ToneBank *bank=((dr) ? song->drumset[b] : song->tonebank[b]); | |
| 64 for (i=0; i<128; i++) | |
| 65 if (bank->instrument[i]) | |
| 66 { | |
| 67 /* Not that this could ever happen, of course */ | |
| 68 if (bank->instrument[i] != MAGIC_LOAD_INSTRUMENT) | |
| 69 free_instrument(bank->instrument[i]); | |
| 70 bank->instrument[i]=0; | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 static Sint32 convert_envelope_rate(MidiSong *song, Uint8 rate) | |
| 75 { | |
| 76 Sint32 r; | |
| 77 | |
| 78 r = 3 - ((rate >> 6) & 0x3); | |
| 79 r *= 3; | |
| 80 r = (Sint32) (rate & 0x3f) << r; /* 6.9 fixed point */ | |
| 81 | |
| 82 /* 15.15 fixed point. */ | |
| 83 r = ((r * 44100) / song->rate) * song->control_ratio; | |
| 84 | |
| 85 #ifdef FAST_DECAY | |
| 86 return r << 10; | |
| 87 #else | |
| 88 return r << 9; | |
| 89 #endif | |
| 90 } | |
| 91 | |
| 92 static Sint32 convert_envelope_offset(Uint8 offset) | |
| 93 { | |
| 94 /* This is not too good... Can anyone tell me what these values mean? | |
| 95 Are they GUS-style "exponential" volumes? And what does that mean? */ | |
| 96 | |
| 97 /* 15.15 fixed point */ | |
| 98 return offset << (7+15); | |
| 99 } | |
| 100 | |
| 101 static Sint32 convert_tremolo_sweep(MidiSong *song, Uint8 sweep) | |
| 102 { | |
| 103 if (!sweep) | |
| 104 return 0; | |
| 105 | |
| 106 return | |
| 107 ((song->control_ratio * SWEEP_TUNING) << SWEEP_SHIFT) / | |
| 108 (song->rate * sweep); | |
| 109 } | |
| 110 | |
| 111 static Sint32 convert_vibrato_sweep(MidiSong *song, Uint8 sweep, | |
| 112 Sint32 vib_control_ratio) | |
| 113 { | |
| 114 if (!sweep) | |
| 115 return 0; | |
| 116 | |
| 117 return | |
| 118 (Sint32) (FSCALE((double) (vib_control_ratio) * SWEEP_TUNING, SWEEP_SHIFT) | |
| 119 / (double)(song->rate * sweep)); | |
| 120 | |
| 121 /* this was overflowing with seashore.pat | |
| 122 | |
| 123 ((vib_control_ratio * SWEEP_TUNING) << SWEEP_SHIFT) / | |
| 124 (song->rate * sweep); */ | |
| 125 } | |
| 126 | |
| 127 static Sint32 convert_tremolo_rate(MidiSong *song, Uint8 rate) | |
| 128 { | |
| 129 return | |
| 130 ((SINE_CYCLE_LENGTH * song->control_ratio * rate) << RATE_SHIFT) / | |
| 131 (TREMOLO_RATE_TUNING * song->rate); | |
| 132 } | |
| 133 | |
| 134 static Sint32 convert_vibrato_rate(MidiSong *song, Uint8 rate) | |
| 135 { | |
| 136 /* Return a suitable vibrato_control_ratio value */ | |
| 137 return | |
| 138 (VIBRATO_RATE_TUNING * song->rate) / | |
| 139 (rate * 2 * VIBRATO_SAMPLE_INCREMENTS); | |
| 140 } | |
| 141 | |
| 142 static void reverse_data(Sint16 *sp, Sint32 ls, Sint32 le) | |
| 143 { | |
| 144 Sint16 s, *ep=sp+le; | |
| 145 sp+=ls; | |
| 146 le-=ls; | |
| 147 le/=2; | |
| 148 while (le--) | |
| 149 { | |
| 150 s=*sp; | |
| 151 *sp++=*ep; | |
| 152 *ep--=s; | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 /* | |
| 157 If panning or note_to_use != -1, it will be used for all samples, | |
| 158 instead of the sample-specific values in the instrument file. | |
| 159 | |
| 160 For note_to_use, any value <0 or >127 will be forced to 0. | |
| 161 | |
| 162 For other parameters, 1 means yes, 0 means no, other values are | |
| 163 undefined. | |
| 164 | |
| 165 TODO: do reverse loops right */ | |
| 166 static Instrument *load_instrument(MidiSong *song, char *name, int percussion, | |
| 167 int panning, int amp, int note_to_use, | |
| 168 int strip_loop, int strip_envelope, | |
| 169 int strip_tail) | |
| 170 { | |
| 171 Instrument *ip; | |
| 172 Sample *sp; | |
| 173 SDL_RWops *rw; | |
| 174 char tmp[1024]; | |
| 175 int i,j,noluck=0; | |
| 176 static char *patch_ext[] = PATCH_EXT_LIST; | |
| 177 | |
| 178 if (!name) return 0; | |
| 179 | |
| 180 /* Open patch file */ | |
| 181 if (!(rw=open_file(name))) | |
| 182 { | |
| 183 noluck=1; | |
| 184 /* Try with various extensions */ | |
| 185 for (i=0; patch_ext[i]; i++) | |
| 186 { | |
| 187 if (strlen(name)+strlen(patch_ext[i])<1024) | |
| 188 { | |
| 189 strcpy(tmp, name); | |
| 190 strcat(tmp, patch_ext[i]); | |
| 191 if ((rw=open_file(tmp))) | |
| 192 { | |
| 193 noluck=0; | |
| 194 break; | |
| 195 } | |
| 196 } | |
| 197 } | |
| 198 } | |
| 199 | |
| 200 if (noluck) | |
| 201 { | |
| 202 SNDDBG(("Instrument `%s' can't be found.\n", name)); | |
| 203 return 0; | |
| 204 } | |
| 205 | |
| 206 SNDDBG(("Loading instrument %s\n", tmp)); | |
| 207 | |
| 208 /* Read some headers and do cursory sanity checks. There are loads | |
| 209 of magic offsets. This could be rewritten... */ | |
| 210 | |
| 211 if ((239 != SDL_RWread(rw, tmp, 1, 239)) || | |
| 212 (memcmp(tmp, "GF1PATCH110\0ID#000002", 22) && | |
| 213 memcmp(tmp, "GF1PATCH100\0ID#000002", 22))) /* don't know what the | |
| 214 differences are */ | |
| 215 { | |
| 216 SNDDBG(("%s: not an instrument\n", name)); | |
| 217 return 0; | |
| 218 } | |
| 219 | |
| 220 if (tmp[82] != 1 && tmp[82] != 0) /* instruments. To some patch makers, | |
| 221 0 means 1 */ | |
| 222 { | |
| 223 SNDDBG(("Can't handle patches with %d instruments\n", tmp[82])); | |
| 224 return 0; | |
| 225 } | |
| 226 | |
| 227 if (tmp[151] != 1 && tmp[151] != 0) /* layers. What's a layer? */ | |
| 228 { | |
| 229 SNDDBG(("Can't handle instruments with %d layers\n", tmp[151])); | |
| 230 return 0; | |
| 231 } | |
| 232 | |
| 233 ip=safe_malloc(sizeof(Instrument)); | |
| 234 ip->samples = tmp[198]; | |
| 235 ip->sample = safe_malloc(sizeof(Sample) * ip->samples); | |
| 236 for (i=0; i<ip->samples; i++) | |
| 237 { | |
| 238 | |
| 239 Uint8 fractions; | |
| 240 Sint32 tmplong; | |
| 241 Uint16 tmpshort; | |
| 242 Uint8 tmpchar; | |
| 243 | |
| 244 #define READ_CHAR(thing) \ | |
| 245 if (1 != SDL_RWread(rw, &tmpchar, 1, 1)) goto fail; \ | |
| 246 thing = tmpchar; | |
| 247 #define READ_SHORT(thing) \ | |
| 248 if (1 != SDL_RWread(rw, &tmpshort, 2, 1)) goto fail; \ | |
| 249 thing = SDL_SwapLE16(tmpshort); | |
| 250 #define READ_LONG(thing) \ | |
| 251 if (1 != SDL_RWread(rw, &tmplong, 4, 1)) goto fail; \ | |
| 252 thing = SDL_SwapLE32(tmplong); | |
| 253 | |
| 254 SDL_RWseek(rw, 7, SEEK_CUR); /* Skip the wave name */ | |
| 255 | |
| 256 if (1 != SDL_RWread(rw, &fractions, 1, 1)) | |
| 257 { | |
| 258 fail: | |
| 259 SNDDBG(("Error reading sample %d\n", i)); | |
| 260 for (j=0; j<i; j++) | |
| 261 free(ip->sample[j].data); | |
| 262 free(ip->sample); | |
| 263 free(ip); | |
| 264 return 0; | |
| 265 } | |
| 266 | |
| 267 sp=&(ip->sample[i]); | |
| 268 | |
| 269 READ_LONG(sp->data_length); | |
| 270 READ_LONG(sp->loop_start); | |
| 271 READ_LONG(sp->loop_end); | |
| 272 READ_SHORT(sp->sample_rate); | |
| 273 READ_LONG(sp->low_freq); | |
| 274 READ_LONG(sp->high_freq); | |
| 275 READ_LONG(sp->root_freq); | |
| 276 SDL_RWseek(rw, 2, SEEK_CUR); /* Why have a "root frequency" and then | |
| 277 * "tuning"?? */ | |
| 278 | |
| 279 READ_CHAR(tmp[0]); | |
| 280 | |
| 281 if (panning==-1) | |
| 282 sp->panning = (tmp[0] * 8 + 4) & 0x7f; | |
| 283 else | |
| 284 sp->panning=(Uint8)(panning & 0x7F); | |
| 285 | |
| 286 /* envelope, tremolo, and vibrato */ | |
| 287 if (18 != SDL_RWread(rw, tmp, 1, 18)) goto fail; | |
| 288 | |
| 289 if (!tmp[13] || !tmp[14]) | |
| 290 { | |
| 291 sp->tremolo_sweep_increment= | |
| 292 sp->tremolo_phase_increment=sp->tremolo_depth=0; | |
| 293 SNDDBG((" * no tremolo\n")); | |
| 294 } | |
| 295 else | |
| 296 { | |
| 297 sp->tremolo_sweep_increment=convert_tremolo_sweep(song, tmp[12]); | |
| 298 sp->tremolo_phase_increment=convert_tremolo_rate(song, tmp[13]); | |
| 299 sp->tremolo_depth=tmp[14]; | |
| 300 SNDDBG((" * tremolo: sweep %d, phase %d, depth %d\n", | |
| 301 sp->tremolo_sweep_increment, sp->tremolo_phase_increment, | |
| 302 sp->tremolo_depth)); | |
| 303 } | |
| 304 | |
| 305 if (!tmp[16] || !tmp[17]) | |
| 306 { | |
| 307 sp->vibrato_sweep_increment= | |
| 308 sp->vibrato_control_ratio=sp->vibrato_depth=0; | |
| 309 SNDDBG((" * no vibrato\n")); | |
| 310 } | |
| 311 else | |
| 312 { | |
| 313 sp->vibrato_control_ratio=convert_vibrato_rate(song, tmp[16]); | |
| 314 sp->vibrato_sweep_increment= | |
| 315 convert_vibrato_sweep(song, tmp[15], sp->vibrato_control_ratio); | |
| 316 sp->vibrato_depth=tmp[17]; | |
| 317 SNDDBG((" * vibrato: sweep %d, ctl %d, depth %d\n", | |
| 318 sp->vibrato_sweep_increment, sp->vibrato_control_ratio, | |
| 319 sp->vibrato_depth)); | |
| 320 | |
| 321 } | |
| 322 | |
| 323 READ_CHAR(sp->modes); | |
| 324 | |
| 325 SDL_RWseek(rw, 40, SEEK_CUR); /* skip the useless scale frequency, scale | |
| 326 factor (what's it mean?), and reserved | |
| 327 space */ | |
| 328 | |
| 329 /* Mark this as a fixed-pitch instrument if such a deed is desired. */ | |
| 330 if (note_to_use!=-1) | |
| 331 sp->note_to_use=(Uint8)(note_to_use); | |
| 332 else | |
| 333 sp->note_to_use=0; | |
| 334 | |
| 335 /* seashore.pat in the Midia patch set has no Sustain. I don't | |
| 336 understand why, and fixing it by adding the Sustain flag to | |
| 337 all looped patches probably breaks something else. We do it | |
| 338 anyway. */ | |
| 339 | |
| 340 if (sp->modes & MODES_LOOPING) | |
| 341 sp->modes |= MODES_SUSTAIN; | |
| 342 | |
| 343 /* Strip any loops and envelopes we're permitted to */ | |
| 344 if ((strip_loop==1) && | |
| 345 (sp->modes & (MODES_SUSTAIN | MODES_LOOPING | | |
| 346 MODES_PINGPONG | MODES_REVERSE))) | |
| 347 { | |
| 348 SNDDBG((" - Removing loop and/or sustain\n")); | |
| 349 sp->modes &=~(MODES_SUSTAIN | MODES_LOOPING | | |
| 350 MODES_PINGPONG | MODES_REVERSE); | |
| 351 } | |
| 352 | |
| 353 if (strip_envelope==1) | |
| 354 { | |
| 355 if (sp->modes & MODES_ENVELOPE) | |
| 356 SNDDBG((" - Removing envelope\n")); | |
| 357 sp->modes &= ~MODES_ENVELOPE; | |
| 358 } | |
| 359 else if (strip_envelope != 0) | |
| 360 { | |
| 361 /* Have to make a guess. */ | |
| 362 if (!(sp->modes & (MODES_LOOPING | MODES_PINGPONG | MODES_REVERSE))) | |
| 363 { | |
| 364 /* No loop? Then what's there to sustain? No envelope needed | |
| 365 either... */ | |
| 366 sp->modes &= ~(MODES_SUSTAIN|MODES_ENVELOPE); | |
| 367 SNDDBG((" - No loop, removing sustain and envelope\n")); | |
| 368 } | |
| 369 else if (!memcmp(tmp, "??????", 6) || tmp[11] >= 100) | |
| 370 { | |
| 371 /* Envelope rates all maxed out? Envelope end at a high "offset"? | |
| 372 That's a weird envelope. Take it out. */ | |
| 373 sp->modes &= ~MODES_ENVELOPE; | |
| 374 SNDDBG((" - Weirdness, removing envelope\n")); | |
| 375 } | |
| 376 else if (!(sp->modes & MODES_SUSTAIN)) | |
| 377 { | |
| 378 /* No sustain? Then no envelope. I don't know if this is | |
| 379 justified, but patches without sustain usually don't need the | |
| 380 envelope either... at least the Gravis ones. They're mostly | |
| 381 drums. I think. */ | |
| 382 sp->modes &= ~MODES_ENVELOPE; | |
| 383 SNDDBG((" - No sustain, removing envelope\n")); | |
| 384 } | |
| 385 } | |
| 386 | |
| 387 for (j=0; j<6; j++) | |
| 388 { | |
| 389 sp->envelope_rate[j]= | |
| 390 convert_envelope_rate(song, tmp[j]); | |
| 391 sp->envelope_offset[j]= | |
| 392 convert_envelope_offset(tmp[6+j]); | |
| 393 } | |
| 394 | |
| 395 /* Then read the sample data */ | |
| 396 sp->data = safe_malloc(sp->data_length); | |
| 397 if (1 != SDL_RWread(rw, sp->data, sp->data_length, 1)) | |
| 398 goto fail; | |
| 399 | |
| 400 if (!(sp->modes & MODES_16BIT)) /* convert to 16-bit data */ | |
| 401 { | |
| 402 Sint32 i=sp->data_length; | |
| 403 Uint8 *cp=(Uint8 *)(sp->data); | |
| 404 Uint16 *tmp,*new; | |
| 405 tmp=new=safe_malloc(sp->data_length*2); | |
| 406 while (i--) | |
| 407 *tmp++ = (Uint16)(*cp++) << 8; | |
| 408 cp=(Uint8 *)(sp->data); | |
| 409 sp->data = (sample_t *)new; | |
| 410 free(cp); | |
| 411 sp->data_length *= 2; | |
| 412 sp->loop_start *= 2; | |
| 413 sp->loop_end *= 2; | |
| 414 } | |
| 415 #if SDL_BYTEORDER == SDL_BIG_ENDIAN | |
| 416 else | |
| 417 /* convert to machine byte order */ | |
| 418 { | |
| 419 Sint32 i=sp->data_length/2; | |
| 420 Sint16 *tmp=(Sint16 *)sp->data,s; | |
| 421 while (i--) | |
| 422 { | |
|
447
c98a34c00069
Fixed MIDI decoding on bigendian systems.
Ryan C. Gordon <icculus@icculus.org>
parents:
199
diff
changeset
|
423 s=SDL_SwapLE16(*tmp); |
| 199 | 424 *tmp++=s; |
| 425 } | |
| 426 } | |
| 427 #endif | |
| 428 | |
| 429 if (sp->modes & MODES_UNSIGNED) /* convert to signed data */ | |
| 430 { | |
| 431 Sint32 i=sp->data_length/2; | |
| 432 Sint16 *tmp=(Sint16 *)sp->data; | |
| 433 while (i--) | |
| 434 *tmp++ ^= 0x8000; | |
| 435 } | |
| 436 | |
| 437 /* Reverse reverse loops and pass them off as normal loops */ | |
| 438 if (sp->modes & MODES_REVERSE) | |
| 439 { | |
| 440 Sint32 t; | |
| 441 /* The GUS apparently plays reverse loops by reversing the | |
| 442 whole sample. We do the same because the GUS does not SUCK. */ | |
| 443 | |
| 444 SNDDBG(("Reverse loop in %s\n", name)); | |
| 445 reverse_data((Sint16 *)sp->data, 0, sp->data_length/2); | |
| 446 | |
| 447 t=sp->loop_start; | |
| 448 sp->loop_start=sp->data_length - sp->loop_end; | |
| 449 sp->loop_end=sp->data_length - t; | |
| 450 | |
| 451 sp->modes &= ~MODES_REVERSE; | |
| 452 sp->modes |= MODES_LOOPING; /* just in case */ | |
| 453 } | |
| 454 | |
| 455 #ifdef ADJUST_SAMPLE_VOLUMES | |
| 456 if (amp!=-1) | |
| 457 sp->volume=(float)((amp) / 100.0); | |
| 458 else | |
| 459 { | |
| 460 /* Try to determine a volume scaling factor for the sample. | |
| 461 This is a very crude adjustment, but things sound more | |
| 462 balanced with it. Still, this should be a runtime option. */ | |
| 463 Sint32 i=sp->data_length/2; | |
| 464 Sint16 maxamp=0,a; | |
| 465 Sint16 *tmp=(Sint16 *)sp->data; | |
| 466 while (i--) | |
| 467 { | |
| 468 a=*tmp++; | |
| 469 if (a<0) a=-a; | |
| 470 if (a>maxamp) | |
| 471 maxamp=a; | |
| 472 } | |
| 473 sp->volume=(float)(32768.0 / maxamp); | |
| 474 SNDDBG((" * volume comp: %f\n", sp->volume)); | |
| 475 } | |
| 476 #else | |
| 477 if (amp!=-1) | |
| 478 sp->volume=(double)(amp) / 100.0; | |
| 479 else | |
| 480 sp->volume=1.0; | |
| 481 #endif | |
| 482 | |
| 483 sp->data_length /= 2; /* These are in bytes. Convert into samples. */ | |
| 484 sp->loop_start /= 2; | |
| 485 sp->loop_end /= 2; | |
| 486 | |
| 487 /* Then fractional samples */ | |
| 488 sp->data_length <<= FRACTION_BITS; | |
| 489 sp->loop_start <<= FRACTION_BITS; | |
| 490 sp->loop_end <<= FRACTION_BITS; | |
| 491 | |
| 492 /* Adjust for fractional loop points. This is a guess. Does anyone | |
| 493 know what "fractions" really stands for? */ | |
| 494 sp->loop_start |= | |
| 495 (fractions & 0x0F) << (FRACTION_BITS-4); | |
| 496 sp->loop_end |= | |
| 497 ((fractions>>4) & 0x0F) << (FRACTION_BITS-4); | |
| 498 | |
| 499 /* If this instrument will always be played on the same note, | |
| 500 and it's not looped, we can resample it now. */ | |
| 501 if (sp->note_to_use && !(sp->modes & MODES_LOOPING)) | |
| 502 pre_resample(song, sp); | |
| 503 | |
| 504 if (strip_tail==1) | |
| 505 { | |
| 506 /* Let's not really, just say we did. */ | |
| 507 SNDDBG((" - Stripping tail\n")); | |
| 508 sp->data_length = sp->loop_end; | |
| 509 } | |
| 510 } | |
| 511 | |
| 512 SDL_RWclose(rw); | |
| 513 return ip; | |
| 514 } | |
| 515 | |
| 516 static int fill_bank(MidiSong *song, int dr, int b) | |
| 517 { | |
| 518 int i, errors=0; | |
| 519 ToneBank *bank=((dr) ? song->drumset[b] : song->tonebank[b]); | |
| 520 if (!bank) | |
| 521 { | |
| 522 SNDDBG(("Huh. Tried to load instruments in non-existent %s %d\n", | |
| 523 (dr) ? "drumset" : "tone bank", b)); | |
| 524 return 0; | |
| 525 } | |
| 526 for (i=0; i<128; i++) | |
| 527 { | |
| 528 if (bank->instrument[i]==MAGIC_LOAD_INSTRUMENT) | |
| 529 { | |
| 530 if (!(bank->tone[i].name)) | |
| 531 { | |
| 532 SNDDBG(("No instrument mapped to %s %d, program %d%s\n", | |
| 533 (dr)? "drum set" : "tone bank", b, i, | |
| 534 (b!=0) ? "" : " - this instrument will not be heard")); | |
| 535 if (b!=0) | |
| 536 { | |
| 537 /* Mark the corresponding instrument in the default | |
| 538 bank / drumset for loading (if it isn't already) */ | |
| 539 if (!dr) | |
| 540 { | |
| 541 if (!(song->tonebank[0]->instrument[i])) | |
| 542 song->tonebank[0]->instrument[i] = | |
| 543 MAGIC_LOAD_INSTRUMENT; | |
| 544 } | |
| 545 else | |
| 546 { | |
| 547 if (!(song->drumset[0]->instrument[i])) | |
| 548 song->drumset[0]->instrument[i] = | |
| 549 MAGIC_LOAD_INSTRUMENT; | |
| 550 } | |
| 551 } | |
| 552 bank->instrument[i] = 0; | |
| 553 errors++; | |
| 554 } | |
| 555 else if (!(bank->instrument[i] = | |
| 556 load_instrument(song, | |
| 557 bank->tone[i].name, | |
| 558 (dr) ? 1 : 0, | |
| 559 bank->tone[i].pan, | |
| 560 bank->tone[i].amp, | |
| 561 (bank->tone[i].note!=-1) ? | |
| 562 bank->tone[i].note : | |
| 563 ((dr) ? i : -1), | |
| 564 (bank->tone[i].strip_loop!=-1) ? | |
| 565 bank->tone[i].strip_loop : | |
| 566 ((dr) ? 1 : -1), | |
| 567 (bank->tone[i].strip_envelope != -1) ? | |
| 568 bank->tone[i].strip_envelope : | |
| 569 ((dr) ? 1 : -1), | |
| 570 bank->tone[i].strip_tail ))) | |
| 571 { | |
| 572 SNDDBG(("Couldn't load instrument %s (%s %d, program %d)\n", | |
| 573 bank->tone[i].name, | |
| 574 (dr)? "drum set" : "tone bank", b, i)); | |
| 575 errors++; | |
| 576 } | |
| 577 } | |
| 578 } | |
| 579 return errors; | |
| 580 } | |
| 581 | |
| 582 int load_missing_instruments(MidiSong *song) | |
| 583 { | |
| 584 int i=128,errors=0; | |
| 585 while (i--) | |
| 586 { | |
| 587 if (song->tonebank[i]) | |
| 588 errors+=fill_bank(song,0,i); | |
| 589 if (song->drumset[i]) | |
| 590 errors+=fill_bank(song,1,i); | |
| 591 } | |
| 592 return errors; | |
| 593 } | |
| 594 | |
| 595 void free_instruments(MidiSong *song) | |
| 596 { | |
| 597 int i=128; | |
| 598 while(i--) | |
| 599 { | |
| 600 if (song->tonebank[i]) | |
| 601 free_bank(song, 0, i); | |
| 602 if (song->drumset[i]) | |
| 603 free_bank(song, 1, i); | |
| 604 } | |
| 605 } | |
| 606 | |
| 607 int set_default_instrument(MidiSong *song, char *name) | |
| 608 { | |
| 609 Instrument *ip; | |
| 610 if (!(ip=load_instrument(song, name, 0, -1, -1, -1, 0, 0, 0))) | |
| 611 return -1; | |
| 612 song->default_instrument = ip; | |
| 613 song->default_program = SPECIAL_PROGRAM; | |
| 614 return 0; | |
| 615 } |