| 1 | /*************************************************************************** |
| 2 | * Copyright (C) 2007 PCSX-df Team * |
| 3 | * Copyright (C) 2009 Wei Mingzhi * |
| 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 * |
| 17 | * Free Software Foundation, Inc., * |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * |
| 19 | ***************************************************************************/ |
| 20 | |
| 21 | #include "psxcommon.h" |
| 22 | #include "plugins.h" |
| 23 | #include "cdrom.h" |
| 24 | #include "cdriso.h" |
| 25 | |
| 26 | #ifdef _WIN32 |
| 27 | #include <process.h> |
| 28 | #include <windows.h> |
| 29 | #else |
| 30 | #include <pthread.h> |
| 31 | #include <sys/time.h> |
| 32 | #endif |
| 33 | |
| 34 | static FILE *cdHandle = NULL; |
| 35 | static FILE *cddaHandle = NULL; |
| 36 | static FILE *subHandle = NULL; |
| 37 | |
| 38 | static boolean subChanMixed = FALSE; |
| 39 | static boolean subChanRaw = FALSE; |
| 40 | |
| 41 | static unsigned char cdbuffer[DATA_SIZE]; |
| 42 | static unsigned char subbuffer[SUB_FRAMESIZE]; |
| 43 | |
| 44 | static unsigned char sndbuffer[CD_FRAMESIZE_RAW * 10]; |
| 45 | |
| 46 | #define CDDA_FRAMETIME (1000 * (sizeof(sndbuffer) / CD_FRAMESIZE_RAW) / 75) |
| 47 | |
| 48 | #ifdef _WIN32 |
| 49 | static HANDLE threadid; |
| 50 | #else |
| 51 | static pthread_t threadid; |
| 52 | #endif |
| 53 | static unsigned int initial_offset = 0; |
| 54 | static boolean playing = FALSE; |
| 55 | static boolean cddaBigEndian = FALSE; |
| 56 | static unsigned int cddaCurOffset = 0; |
| 57 | static unsigned int cddaStartOffset; |
| 58 | |
| 59 | char* CALLBACK CDR__getDriveLetter(void); |
| 60 | long CALLBACK CDR__configure(void); |
| 61 | long CALLBACK CDR__test(void); |
| 62 | void CALLBACK CDR__about(void); |
| 63 | long CALLBACK CDR__setfilename(char *filename); |
| 64 | long CALLBACK CDR__getStatus(struct CdrStat *stat); |
| 65 | |
| 66 | extern void *hCDRDriver; |
| 67 | |
| 68 | struct trackinfo { |
| 69 | enum {DATA, CDDA} type; |
| 70 | char start[3]; // MSF-format |
| 71 | char length[3]; // MSF-format |
| 72 | FILE *handle; // for multi-track images CDDA |
| 73 | }; |
| 74 | |
| 75 | #define MAXTRACKS 100 /* How many tracks can a CD hold? */ |
| 76 | |
| 77 | static int numtracks = 0; |
| 78 | static struct trackinfo ti[MAXTRACKS]; |
| 79 | |
| 80 | // get a sector from a msf-array |
| 81 | static unsigned int msf2sec(char *msf) { |
| 82 | return ((msf[0] * 60 + msf[1]) * 75) + msf[2]; |
| 83 | } |
| 84 | |
| 85 | static void sec2msf(unsigned int s, char *msf) { |
| 86 | msf[0] = s / 75 / 60; |
| 87 | s = s - msf[0] * 75 * 60; |
| 88 | msf[1] = s / 75; |
| 89 | s = s - msf[1] * 75; |
| 90 | msf[2] = s; |
| 91 | } |
| 92 | |
| 93 | // divide a string of xx:yy:zz into m, s, f |
| 94 | static void tok2msf(char *time, char *msf) { |
| 95 | char *token; |
| 96 | |
| 97 | token = strtok(time, ":"); |
| 98 | if (token) { |
| 99 | msf[0] = atoi(token); |
| 100 | } |
| 101 | else { |
| 102 | msf[0] = 0; |
| 103 | } |
| 104 | |
| 105 | token = strtok(NULL, ":"); |
| 106 | if (token) { |
| 107 | msf[1] = atoi(token); |
| 108 | } |
| 109 | else { |
| 110 | msf[1] = 0; |
| 111 | } |
| 112 | |
| 113 | token = strtok(NULL, ":"); |
| 114 | if (token) { |
| 115 | msf[2] = atoi(token); |
| 116 | } |
| 117 | else { |
| 118 | msf[2] = 0; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | #ifndef _WIN32 |
| 123 | static long GetTickCount(void) { |
| 124 | static time_t initial_time = 0; |
| 125 | struct timeval now; |
| 126 | |
| 127 | gettimeofday(&now, NULL); |
| 128 | |
| 129 | if (initial_time == 0) { |
| 130 | initial_time = now.tv_sec; |
| 131 | } |
| 132 | |
| 133 | return (now.tv_sec - initial_time) * 1000L + now.tv_usec / 1000L; |
| 134 | } |
| 135 | #endif |
| 136 | |
| 137 | // this thread plays audio data |
| 138 | #ifdef _WIN32 |
| 139 | static void playthread(void *param) |
| 140 | #else |
| 141 | static void *playthread(void *param) |
| 142 | #endif |
| 143 | { |
| 144 | long d, t, i, s; |
| 145 | unsigned char tmp; |
| 146 | |
| 147 | t = GetTickCount(); |
| 148 | |
| 149 | while (playing) { |
| 150 | d = t - (long)GetTickCount(); |
| 151 | if (d <= 0) { |
| 152 | d = 1; |
| 153 | } |
| 154 | else if (d > CDDA_FRAMETIME) { |
| 155 | d = CDDA_FRAMETIME; |
| 156 | } |
| 157 | #ifdef _WIN32 |
| 158 | Sleep(d); |
| 159 | #else |
| 160 | usleep(d * 1000); |
| 161 | #endif |
| 162 | // HACK: stop feeding data while emu is paused |
| 163 | extern int stop; |
| 164 | if (stop) { |
| 165 | usleep(100000); |
| 166 | continue; |
| 167 | } |
| 168 | |
| 169 | t = GetTickCount() + CDDA_FRAMETIME; |
| 170 | |
| 171 | if (subChanMixed) { |
| 172 | s = 0; |
| 173 | |
| 174 | for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) { |
| 175 | // read one sector |
| 176 | d = fread(sndbuffer + CD_FRAMESIZE_RAW * i, 1, CD_FRAMESIZE_RAW, cddaHandle); |
| 177 | if (d < CD_FRAMESIZE_RAW) { |
| 178 | break; |
| 179 | } |
| 180 | |
| 181 | s += d; |
| 182 | |
| 183 | // skip the subchannel data |
| 184 | fseek(cddaHandle, SUB_FRAMESIZE, SEEK_CUR); |
| 185 | } |
| 186 | } |
| 187 | else { |
| 188 | s = fread(sndbuffer, 1, sizeof(sndbuffer), cddaHandle); |
| 189 | } |
| 190 | |
| 191 | if (s == 0) { |
| 192 | playing = FALSE; |
| 193 | initial_offset = 0; |
| 194 | break; |
| 195 | } |
| 196 | |
| 197 | if (!cdr.Muted && playing) { |
| 198 | if (cddaBigEndian) { |
| 199 | for (i = 0; i < s / 2; i++) { |
| 200 | tmp = sndbuffer[i * 2]; |
| 201 | sndbuffer[i * 2] = sndbuffer[i * 2 + 1]; |
| 202 | sndbuffer[i * 2 + 1] = tmp; |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | SPU_playCDDAchannel((short *)sndbuffer, s); |
| 207 | } |
| 208 | |
| 209 | cddaCurOffset += s; |
| 210 | } |
| 211 | |
| 212 | #ifdef _WIN32 |
| 213 | _endthread(); |
| 214 | #else |
| 215 | pthread_exit(0); |
| 216 | return NULL; |
| 217 | #endif |
| 218 | } |
| 219 | |
| 220 | // stop the CDDA playback |
| 221 | static void stopCDDA() { |
| 222 | if (!playing) { |
| 223 | return; |
| 224 | } |
| 225 | |
| 226 | playing = FALSE; |
| 227 | #ifdef _WIN32 |
| 228 | WaitForSingleObject(threadid, INFINITE); |
| 229 | #else |
| 230 | pthread_join(threadid, NULL); |
| 231 | #endif |
| 232 | |
| 233 | initial_offset = 0; |
| 234 | } |
| 235 | |
| 236 | // start the CDDA playback |
| 237 | static void startCDDA(unsigned int offset) { |
| 238 | if (playing) { |
| 239 | if (initial_offset == offset) { |
| 240 | return; |
| 241 | } |
| 242 | stopCDDA(); |
| 243 | } |
| 244 | |
| 245 | initial_offset = offset; |
| 246 | cddaCurOffset = initial_offset; |
| 247 | fseek(cddaHandle, initial_offset, SEEK_SET); |
| 248 | |
| 249 | playing = TRUE; |
| 250 | |
| 251 | #ifdef _WIN32 |
| 252 | threadid = (HANDLE)_beginthread(playthread, 0, NULL); |
| 253 | #else |
| 254 | pthread_create(&threadid, NULL, playthread, NULL); |
| 255 | #endif |
| 256 | } |
| 257 | |
| 258 | // this function tries to get the .toc file of the given .bin |
| 259 | // the necessary data is put into the ti (trackinformation)-array |
| 260 | static int parsetoc(const char *isofile) { |
| 261 | char tocname[MAXPATHLEN]; |
| 262 | FILE *fi; |
| 263 | char linebuf[256], dummy[256], name[256]; |
| 264 | char *token; |
| 265 | char time[20], time2[20]; |
| 266 | unsigned int t; |
| 267 | |
| 268 | numtracks = 0; |
| 269 | |
| 270 | // copy name of the iso and change extension from .bin to .toc |
| 271 | strncpy(tocname, isofile, sizeof(tocname)); |
| 272 | tocname[MAXPATHLEN - 1] = '\0'; |
| 273 | if (strlen(tocname) >= 4) { |
| 274 | strcpy(tocname + strlen(tocname) - 4, ".toc"); |
| 275 | } |
| 276 | else { |
| 277 | return -1; |
| 278 | } |
| 279 | |
| 280 | if ((fi = fopen(tocname, "r")) == NULL) { |
| 281 | // try changing extension to .cue (to satisfy some stupid tutorials) |
| 282 | strcpy(tocname + strlen(tocname) - 4, ".cue"); |
| 283 | if ((fi = fopen(tocname, "r")) == NULL) { |
| 284 | // if filename is image.toc.bin, try removing .bin (for Brasero) |
| 285 | strcpy(tocname, isofile); |
| 286 | t = strlen(tocname); |
| 287 | if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) { |
| 288 | tocname[t - 4] = '\0'; |
| 289 | if ((fi = fopen(tocname, "r")) == NULL) { |
| 290 | return -1; |
| 291 | } |
| 292 | } |
| 293 | else { |
| 294 | return -1; |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | memset(&ti, 0, sizeof(ti)); |
| 300 | cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio |
| 301 | |
| 302 | // parse the .toc file |
| 303 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 304 | // search for tracks |
| 305 | strncpy(dummy, linebuf, sizeof(linebuf)); |
| 306 | token = strtok(dummy, " "); |
| 307 | |
| 308 | if (token == NULL) continue; |
| 309 | |
| 310 | if (!strcmp(token, "TRACK")) { |
| 311 | // get type of track |
| 312 | token = strtok(NULL, " "); |
| 313 | numtracks++; |
| 314 | |
| 315 | if (!strncmp(token, "MODE2_RAW", 9)) { |
| 316 | ti[numtracks].type = DATA; |
| 317 | sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0 |
| 318 | |
| 319 | // check if this image contains mixed subchannel data |
| 320 | token = strtok(NULL, " "); |
| 321 | if (token != NULL && !strncmp(token, "RW_RAW", 6)) { |
| 322 | subChanMixed = TRUE; |
| 323 | subChanRaw = TRUE; |
| 324 | } |
| 325 | } |
| 326 | else if (!strncmp(token, "AUDIO", 5)) { |
| 327 | ti[numtracks].type = CDDA; |
| 328 | } |
| 329 | } |
| 330 | else if (!strcmp(token, "DATAFILE")) { |
| 331 | if (ti[numtracks].type == CDDA) { |
| 332 | sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2); |
| 333 | t /= CD_FRAMESIZE_RAW + (subChanMixed ? SUB_FRAMESIZE : 0); |
| 334 | t += 2 * 75; |
| 335 | sec2msf(t, (char *)&ti[numtracks].start); |
| 336 | tok2msf((char *)&time2, (char *)&ti[numtracks].length); |
| 337 | } |
| 338 | else { |
| 339 | sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time); |
| 340 | tok2msf((char *)&time, (char *)&ti[numtracks].length); |
| 341 | } |
| 342 | } |
| 343 | else if (!strcmp(token, "FILE")) { |
| 344 | sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2); |
| 345 | tok2msf((char *)&time, (char *)&ti[numtracks].start); |
| 346 | t /= CD_FRAMESIZE_RAW + (subChanMixed ? SUB_FRAMESIZE : 0); |
| 347 | t += msf2sec(ti[numtracks].start) + 2 * 75; |
| 348 | sec2msf(t, (char *)&ti[numtracks].start); |
| 349 | tok2msf((char *)&time2, (char *)&ti[numtracks].length); |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | fclose(fi); |
| 354 | |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | // this function tries to get the .cue file of the given .bin |
| 359 | // the necessary data is put into the ti (trackinformation)-array |
| 360 | static int parsecue(const char *isofile) { |
| 361 | char cuename[MAXPATHLEN]; |
| 362 | char filepath[MAXPATHLEN]; |
| 363 | char *incue_fname; |
| 364 | FILE *fi; |
| 365 | char *token; |
| 366 | char time[20]; |
| 367 | char *tmp; |
| 368 | char linebuf[256], dummy[256]; |
| 369 | unsigned int incue_max_len; |
| 370 | unsigned int t, i, total, file_len; |
| 371 | |
| 372 | numtracks = 0; |
| 373 | |
| 374 | // copy name of the iso and change extension from .bin to .cue |
| 375 | strncpy(cuename, isofile, sizeof(cuename)); |
| 376 | cuename[MAXPATHLEN - 1] = '\0'; |
| 377 | if (strlen(cuename) >= 4) { |
| 378 | strcpy(cuename + strlen(cuename) - 4, ".cue"); |
| 379 | } |
| 380 | else { |
| 381 | return -1; |
| 382 | } |
| 383 | |
| 384 | if ((fi = fopen(cuename, "r")) == NULL) { |
| 385 | return -1; |
| 386 | } |
| 387 | |
| 388 | // Some stupid tutorials wrongly tell users to use cdrdao to rip a |
| 389 | // "bin/cue" image, which is in fact a "bin/toc" image. So let's check |
| 390 | // that... |
| 391 | if (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 392 | if (!strncmp(linebuf, "CD_ROM_XA", 9)) { |
| 393 | // Don't proceed further, as this is actually a .toc file rather |
| 394 | // than a .cue file. |
| 395 | fclose(fi); |
| 396 | return parsetoc(isofile); |
| 397 | } |
| 398 | fseek(fi, 0, SEEK_SET); |
| 399 | } |
| 400 | |
| 401 | // build a path for files referenced in .cue |
| 402 | strncpy(filepath, cuename, sizeof(filepath)); |
| 403 | tmp = strrchr(filepath, '/') + 1; |
| 404 | if (tmp == NULL) |
| 405 | tmp = strrchr(filepath, '\\') + 1; |
| 406 | if (tmp == NULL) |
| 407 | tmp = filepath; |
| 408 | *tmp = 0; |
| 409 | filepath[sizeof(filepath) - 1] = 0; |
| 410 | incue_fname = tmp; |
| 411 | incue_max_len = sizeof(filepath) - (tmp - filepath) - 1; |
| 412 | |
| 413 | memset(&ti, 0, sizeof(ti)); |
| 414 | |
| 415 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 416 | strncpy(dummy, linebuf, sizeof(linebuf)); |
| 417 | token = strtok(dummy, " "); |
| 418 | |
| 419 | if (token == NULL) { |
| 420 | continue; |
| 421 | } |
| 422 | |
| 423 | if (!strcmp(token, "TRACK")){ |
| 424 | numtracks++; |
| 425 | |
| 426 | if (strstr(linebuf, "AUDIO") != NULL) { |
| 427 | ti[numtracks].type = CDDA; |
| 428 | } |
| 429 | else if (strstr(linebuf, "MODE1/2352") != NULL || strstr(linebuf, "MODE2/2352") != NULL) { |
| 430 | ti[numtracks].type = DATA; |
| 431 | } |
| 432 | } |
| 433 | else if (!strcmp(token, "INDEX")) { |
| 434 | tmp = strstr(linebuf, "INDEX"); |
| 435 | if (tmp != NULL) { |
| 436 | tmp += strlen("INDEX") + 3; // 3 - space + numeric index |
| 437 | while (*tmp == ' ') tmp++; |
| 438 | if (*tmp != '\n') sscanf(tmp, "%8s", time); |
| 439 | } |
| 440 | |
| 441 | tok2msf((char *)&time, (char *)&ti[numtracks].start); |
| 442 | |
| 443 | t = msf2sec(ti[numtracks].start) + 2 * 75; |
| 444 | sec2msf(t, ti[numtracks].start); |
| 445 | } |
| 446 | else if (!strcmp(token, "FILE")) { |
| 447 | tmp = strstr(linebuf, "FILE"); |
| 448 | if (tmp == NULL) { |
| 449 | continue; |
| 450 | } |
| 451 | tmp += 4; |
| 452 | while (*tmp == ' ') |
| 453 | tmp++; |
| 454 | if (*tmp == '"') { |
| 455 | token = tmp + 1; |
| 456 | tmp = strchr(token, '"'); |
| 457 | if (tmp != NULL) |
| 458 | *tmp = 0; |
| 459 | } |
| 460 | else { |
| 461 | token = tmp; |
| 462 | tmp = strchr(token, ' '); |
| 463 | if (tmp != NULL) |
| 464 | *tmp = 0; |
| 465 | } |
| 466 | |
| 467 | strncpy(incue_fname, token, incue_max_len); |
| 468 | ti[numtracks + 1].handle = fopen(filepath, "rb"); |
| 469 | if (ti[numtracks + 1].handle == NULL) { |
| 470 | SysPrintf(_("could not open: %s\n"), filepath); |
| 471 | } |
| 472 | else if (numtracks == 0 && strlen(isofile) >= 4 && |
| 473 | strcmp(isofile + strlen(isofile) - 4, ".cue") == 0) { |
| 474 | // user selected .cue as image file, use it's data track instead |
| 475 | fclose(cdHandle); |
| 476 | cdHandle = fopen(filepath, "rb"); |
| 477 | } |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | fclose(fi); |
| 482 | |
| 483 | // make corrections for multi-track .cue, fill track lengths |
| 484 | total = 2 * 75; |
| 485 | file_len = 0; |
| 486 | for (i = 1; i <= numtracks; i++) { |
| 487 | if (ti[i].handle != NULL) { |
| 488 | sec2msf(total, ti[i].start); |
| 489 | fseek(ti[i].handle, 0, SEEK_END); |
| 490 | file_len = ftell(ti[i].handle) / 2352; |
| 491 | sec2msf(file_len, ti[i].length); |
| 492 | total += file_len; |
| 493 | } |
| 494 | else { |
| 495 | // this track uses the same file as the last, |
| 496 | // start of this track is last track's end |
| 497 | if (i > 1) { |
| 498 | t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start); |
| 499 | sec2msf(t, ti[i - 1].length); |
| 500 | } |
| 501 | t = file_len - msf2sec(ti[i].start) + 2 * 75; |
| 502 | sec2msf(t, ti[i].length); |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | // this function tries to get the .ccd file of the given .img |
| 510 | // the necessary data is put into the ti (trackinformation)-array |
| 511 | static int parseccd(const char *isofile) { |
| 512 | char ccdname[MAXPATHLEN]; |
| 513 | FILE *fi; |
| 514 | char linebuf[256]; |
| 515 | unsigned int t; |
| 516 | |
| 517 | numtracks = 0; |
| 518 | |
| 519 | // copy name of the iso and change extension from .img to .ccd |
| 520 | strncpy(ccdname, isofile, sizeof(ccdname)); |
| 521 | ccdname[MAXPATHLEN - 1] = '\0'; |
| 522 | if (strlen(ccdname) >= 4) { |
| 523 | strcpy(ccdname + strlen(ccdname) - 4, ".ccd"); |
| 524 | } |
| 525 | else { |
| 526 | return -1; |
| 527 | } |
| 528 | |
| 529 | if ((fi = fopen(ccdname, "r")) == NULL) { |
| 530 | return -1; |
| 531 | } |
| 532 | |
| 533 | memset(&ti, 0, sizeof(ti)); |
| 534 | |
| 535 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 536 | if (!strncmp(linebuf, "[TRACK", 6)){ |
| 537 | numtracks++; |
| 538 | } |
| 539 | else if (!strncmp(linebuf, "MODE=", 5)) { |
| 540 | sscanf(linebuf, "MODE=%d", &t); |
| 541 | ti[numtracks].type = ((t == 0) ? CDDA : DATA); |
| 542 | } |
| 543 | else if (!strncmp(linebuf, "INDEX 1=", 8)) { |
| 544 | sscanf(linebuf, "INDEX 1=%d", &t); |
| 545 | sec2msf(t + 2 * 75, ti[numtracks].start); |
| 546 | |
| 547 | // If we've already seen another track, this is its end |
| 548 | if (numtracks > 1) { |
| 549 | t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start); |
| 550 | sec2msf(t, ti[numtracks - 1].length); |
| 551 | } |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | fclose(fi); |
| 556 | |
| 557 | // Fill out the last track's end based on size |
| 558 | if (numtracks >= 1) { |
| 559 | fseek(cdHandle, 0, SEEK_END); |
| 560 | t = ftell(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75; |
| 561 | sec2msf(t, ti[numtracks].length); |
| 562 | } |
| 563 | |
| 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | // this function tries to get the .mds file of the given .mdf |
| 568 | // the necessary data is put into the ti (trackinformation)-array |
| 569 | static int parsemds(const char *isofile) { |
| 570 | char mdsname[MAXPATHLEN]; |
| 571 | FILE *fi; |
| 572 | unsigned int offset, extra_offset, l, i; |
| 573 | unsigned short s; |
| 574 | |
| 575 | numtracks = 0; |
| 576 | |
| 577 | // copy name of the iso and change extension from .mdf to .mds |
| 578 | strncpy(mdsname, isofile, sizeof(mdsname)); |
| 579 | mdsname[MAXPATHLEN - 1] = '\0'; |
| 580 | if (strlen(mdsname) >= 4) { |
| 581 | strcpy(mdsname + strlen(mdsname) - 4, ".mds"); |
| 582 | } |
| 583 | else { |
| 584 | return -1; |
| 585 | } |
| 586 | |
| 587 | if ((fi = fopen(mdsname, "rb")) == NULL) { |
| 588 | return -1; |
| 589 | } |
| 590 | |
| 591 | memset(&ti, 0, sizeof(ti)); |
| 592 | |
| 593 | // check if it's a valid mds file |
| 594 | fread(&i, 1, sizeof(unsigned int), fi); |
| 595 | i = SWAP32(i); |
| 596 | if (i != 0x4944454D) { |
| 597 | // not an valid mds file |
| 598 | fclose(fi); |
| 599 | return -1; |
| 600 | } |
| 601 | |
| 602 | // get offset to session block |
| 603 | fseek(fi, 0x50, SEEK_SET); |
| 604 | fread(&offset, 1, sizeof(unsigned int), fi); |
| 605 | offset = SWAP32(offset); |
| 606 | |
| 607 | // get total number of tracks |
| 608 | offset += 14; |
| 609 | fseek(fi, offset, SEEK_SET); |
| 610 | fread(&s, 1, sizeof(unsigned short), fi); |
| 611 | s = SWAP16(s); |
| 612 | numtracks = s; |
| 613 | |
| 614 | // get offset to track blocks |
| 615 | fseek(fi, 4, SEEK_CUR); |
| 616 | fread(&offset, 1, sizeof(unsigned int), fi); |
| 617 | offset = SWAP32(offset); |
| 618 | |
| 619 | // skip lead-in data |
| 620 | while (1) { |
| 621 | fseek(fi, offset + 4, SEEK_SET); |
| 622 | if (fgetc(fi) < 0xA0) { |
| 623 | break; |
| 624 | } |
| 625 | offset += 0x50; |
| 626 | } |
| 627 | |
| 628 | // check if the image contains mixed subchannel data |
| 629 | fseek(fi, offset + 1, SEEK_SET); |
| 630 | subChanMixed = (fgetc(fi) ? TRUE : FALSE); |
| 631 | |
| 632 | // read track data |
| 633 | for (i = 1; i <= numtracks; i++) { |
| 634 | fseek(fi, offset, SEEK_SET); |
| 635 | |
| 636 | // get the track type |
| 637 | ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA); |
| 638 | fseek(fi, 8, SEEK_CUR); |
| 639 | |
| 640 | // get the track starting point |
| 641 | ti[i].start[0] = fgetc(fi); |
| 642 | ti[i].start[1] = fgetc(fi); |
| 643 | ti[i].start[2] = fgetc(fi); |
| 644 | |
| 645 | if (i > 1) { |
| 646 | l = msf2sec(ti[i].start); |
| 647 | sec2msf(l - 2 * 75, ti[i].start); // ??? |
| 648 | } |
| 649 | |
| 650 | // get the track length |
| 651 | fread(&extra_offset, 1, sizeof(unsigned int), fi); |
| 652 | extra_offset = SWAP32(extra_offset); |
| 653 | |
| 654 | fseek(fi, extra_offset + 4, SEEK_SET); |
| 655 | fread(&l, 1, sizeof(unsigned int), fi); |
| 656 | l = SWAP32(l); |
| 657 | sec2msf(l, ti[i].length); |
| 658 | |
| 659 | offset += 0x50; |
| 660 | } |
| 661 | |
| 662 | fclose(fi); |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | // this function tries to get the .sub file of the given .img |
| 667 | static int opensubfile(const char *isoname) { |
| 668 | char subname[MAXPATHLEN]; |
| 669 | |
| 670 | // copy name of the iso and change extension from .img to .sub |
| 671 | strncpy(subname, isoname, sizeof(subname)); |
| 672 | subname[MAXPATHLEN - 1] = '\0'; |
| 673 | if (strlen(subname) >= 4) { |
| 674 | strcpy(subname + strlen(subname) - 4, ".sub"); |
| 675 | } |
| 676 | else { |
| 677 | return -1; |
| 678 | } |
| 679 | |
| 680 | subHandle = fopen(subname, "rb"); |
| 681 | if (subHandle == NULL) { |
| 682 | return -1; |
| 683 | } |
| 684 | |
| 685 | return 0; |
| 686 | } |
| 687 | |
| 688 | static void PrintTracks(void) { |
| 689 | int i; |
| 690 | |
| 691 | for (i = 1; i <= numtracks; i++) { |
| 692 | SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"), |
| 693 | i, (ti[i].type == DATA ? "DATA" : "AUDIO"), |
| 694 | ti[i].start[0], ti[i].start[1], ti[i].start[2], |
| 695 | ti[i].length[0], ti[i].length[1], ti[i].length[2]); |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | // This function is invoked by the front-end when opening an ISO |
| 700 | // file for playback |
| 701 | static long CALLBACK ISOopen(void) { |
| 702 | if (cdHandle != NULL) { |
| 703 | return 0; // it's already open |
| 704 | } |
| 705 | |
| 706 | cdHandle = fopen(GetIsoFile(), "rb"); |
| 707 | if (cdHandle == NULL) { |
| 708 | return -1; |
| 709 | } |
| 710 | |
| 711 | SysPrintf(_("Loaded CD Image: %s"), GetIsoFile()); |
| 712 | |
| 713 | cddaBigEndian = FALSE; |
| 714 | subChanMixed = FALSE; |
| 715 | subChanRaw = FALSE; |
| 716 | |
| 717 | if (parsecue(GetIsoFile()) == 0) { |
| 718 | SysPrintf("[+cue]"); |
| 719 | } |
| 720 | else if (parsetoc(GetIsoFile()) == 0) { |
| 721 | SysPrintf("[+toc]"); |
| 722 | } |
| 723 | else if (parseccd(GetIsoFile()) == 0) { |
| 724 | SysPrintf("[+ccd]"); |
| 725 | } |
| 726 | else if (parsemds(GetIsoFile()) == 0) { |
| 727 | SysPrintf("[+mds]"); |
| 728 | } |
| 729 | |
| 730 | if (!subChanMixed && opensubfile(GetIsoFile()) == 0) { |
| 731 | SysPrintf("[+sub]"); |
| 732 | } |
| 733 | |
| 734 | SysPrintf(".\n"); |
| 735 | |
| 736 | PrintTracks(); |
| 737 | |
| 738 | // make sure we have another handle open for cdda |
| 739 | if (numtracks > 1 && ti[1].handle == NULL) { |
| 740 | ti[1].handle = fopen(GetIsoFile(), "rb"); |
| 741 | } |
| 742 | |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | static long CALLBACK ISOclose(void) { |
| 747 | int i; |
| 748 | |
| 749 | if (cdHandle != NULL) { |
| 750 | fclose(cdHandle); |
| 751 | cdHandle = NULL; |
| 752 | } |
| 753 | if (subHandle != NULL) { |
| 754 | fclose(subHandle); |
| 755 | subHandle = NULL; |
| 756 | } |
| 757 | stopCDDA(); |
| 758 | cddaHandle = NULL; |
| 759 | |
| 760 | for (i = 1; i <= numtracks; i++) { |
| 761 | if (ti[i].handle != NULL) { |
| 762 | fclose(ti[i].handle); |
| 763 | ti[i].handle = NULL; |
| 764 | } |
| 765 | } |
| 766 | numtracks = 0; |
| 767 | |
| 768 | return 0; |
| 769 | } |
| 770 | |
| 771 | static long CALLBACK ISOinit(void) { |
| 772 | assert(cdHandle == NULL); |
| 773 | assert(subHandle == NULL); |
| 774 | |
| 775 | return 0; // do nothing |
| 776 | } |
| 777 | |
| 778 | static long CALLBACK ISOshutdown(void) { |
| 779 | ISOclose(); |
| 780 | return 0; |
| 781 | } |
| 782 | |
| 783 | // return Starting and Ending Track |
| 784 | // buffer: |
| 785 | // byte 0 - start track |
| 786 | // byte 1 - end track |
| 787 | static long CALLBACK ISOgetTN(unsigned char *buffer) { |
| 788 | buffer[0] = 1; |
| 789 | |
| 790 | if (numtracks > 0) { |
| 791 | buffer[1] = numtracks; |
| 792 | } |
| 793 | else { |
| 794 | buffer[1] = 1; |
| 795 | } |
| 796 | |
| 797 | return 0; |
| 798 | } |
| 799 | |
| 800 | // return Track Time |
| 801 | // buffer: |
| 802 | // byte 0 - frame |
| 803 | // byte 1 - second |
| 804 | // byte 2 - minute |
| 805 | static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) { |
| 806 | if (numtracks > 0 && track <= numtracks) { |
| 807 | buffer[2] = ti[track].start[0]; |
| 808 | buffer[1] = ti[track].start[1]; |
| 809 | buffer[0] = ti[track].start[2]; |
| 810 | } |
| 811 | else { |
| 812 | buffer[2] = 0; |
| 813 | buffer[1] = 2; |
| 814 | buffer[0] = 0; |
| 815 | } |
| 816 | |
| 817 | return 0; |
| 818 | } |
| 819 | |
| 820 | // decode 'raw' subchannel data ripped by cdrdao |
| 821 | static void DecodeRawSubData(void) { |
| 822 | unsigned char subQData[12]; |
| 823 | int i; |
| 824 | |
| 825 | memset(subQData, 0, sizeof(subQData)); |
| 826 | |
| 827 | for (i = 0; i < 8 * 12; i++) { |
| 828 | if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed |
| 829 | subQData[i >> 3] |= (1 << (7 - (i & 7))); |
| 830 | } |
| 831 | } |
| 832 | |
| 833 | memcpy(&subbuffer[12], subQData, 12); |
| 834 | } |
| 835 | |
| 836 | // read track |
| 837 | // time: byte 0 - minute; byte 1 - second; byte 2 - frame |
| 838 | // uses bcd format |
| 839 | static long CALLBACK ISOreadTrack(unsigned char *time) { |
| 840 | if (cdHandle == NULL) { |
| 841 | return -1; |
| 842 | } |
| 843 | |
| 844 | if (subChanMixed) { |
| 845 | fseek(cdHandle, MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])) * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + 12, SEEK_SET); |
| 846 | fread(cdbuffer, 1, DATA_SIZE, cdHandle); |
| 847 | fread(subbuffer, 1, SUB_FRAMESIZE, cdHandle); |
| 848 | |
| 849 | if (subChanRaw) DecodeRawSubData(); |
| 850 | } |
| 851 | else { |
| 852 | fseek(cdHandle, MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])) * CD_FRAMESIZE_RAW + 12, SEEK_SET); |
| 853 | fread(cdbuffer, 1, DATA_SIZE, cdHandle); |
| 854 | |
| 855 | if (subHandle != NULL) { |
| 856 | fseek(subHandle, MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])) * SUB_FRAMESIZE, SEEK_SET); |
| 857 | fread(subbuffer, 1, SUB_FRAMESIZE, subHandle); |
| 858 | |
| 859 | if (subChanRaw) DecodeRawSubData(); |
| 860 | } |
| 861 | } |
| 862 | |
| 863 | return 0; |
| 864 | } |
| 865 | |
| 866 | // return readed track |
| 867 | static unsigned char * CALLBACK ISOgetBuffer(void) { |
| 868 | return cdbuffer; |
| 869 | } |
| 870 | |
| 871 | // plays cdda audio |
| 872 | // sector: byte 0 - minute; byte 1 - second; byte 2 - frame |
| 873 | // does NOT uses bcd format |
| 874 | static long CALLBACK ISOplay(unsigned char *time) { |
| 875 | unsigned int i, sect; |
| 876 | |
| 877 | if (numtracks <= 1) |
| 878 | return 0; |
| 879 | |
| 880 | // find the track |
| 881 | sect = msf2sec(time); |
| 882 | for (i = numtracks; i > 1; i--) |
| 883 | if (msf2sec(ti[i].start) <= sect + 2 * 75) |
| 884 | break; |
| 885 | |
| 886 | // find the file that contains this track |
| 887 | for (; i > 1; i--) |
| 888 | if (ti[i].handle != NULL) |
| 889 | break; |
| 890 | |
| 891 | cddaStartOffset = msf2sec(ti[i].start); |
| 892 | sect -= cddaStartOffset - 2 * 75; |
| 893 | cddaHandle = ti[i].handle; |
| 894 | |
| 895 | if (SPU_playCDDAchannel != NULL) { |
| 896 | if (subChanMixed) { |
| 897 | startCDDA(sect * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE)); |
| 898 | } |
| 899 | else { |
| 900 | startCDDA(sect * CD_FRAMESIZE_RAW); |
| 901 | } |
| 902 | } |
| 903 | return 0; |
| 904 | } |
| 905 | |
| 906 | // stops cdda audio |
| 907 | static long CALLBACK ISOstop(void) { |
| 908 | stopCDDA(); |
| 909 | return 0; |
| 910 | } |
| 911 | |
| 912 | // gets subchannel data |
| 913 | static unsigned char* CALLBACK ISOgetBufferSub(void) { |
| 914 | if (subHandle != NULL || subChanMixed) { |
| 915 | return subbuffer; |
| 916 | } |
| 917 | |
| 918 | return NULL; |
| 919 | } |
| 920 | |
| 921 | static long CALLBACK ISOgetStatus(struct CdrStat *stat) { |
| 922 | int sec; |
| 923 | |
| 924 | CDR__getStatus(stat); |
| 925 | |
| 926 | if (playing) { |
| 927 | stat->Type = 0x02; |
| 928 | stat->Status |= 0x80; |
| 929 | sec = (cddaStartOffset + cddaCurOffset) / CD_FRAMESIZE_RAW; |
| 930 | sec2msf(sec, (char *)stat->Time); |
| 931 | } |
| 932 | else { |
| 933 | stat->Type = 0x01; |
| 934 | } |
| 935 | |
| 936 | return 0; |
| 937 | } |
| 938 | |
| 939 | void cdrIsoInit(void) { |
| 940 | CDR_init = ISOinit; |
| 941 | CDR_shutdown = ISOshutdown; |
| 942 | CDR_open = ISOopen; |
| 943 | CDR_close = ISOclose; |
| 944 | CDR_getTN = ISOgetTN; |
| 945 | CDR_getTD = ISOgetTD; |
| 946 | CDR_readTrack = ISOreadTrack; |
| 947 | CDR_getBuffer = ISOgetBuffer; |
| 948 | CDR_play = ISOplay; |
| 949 | CDR_stop = ISOstop; |
| 950 | CDR_getBufferSub = ISOgetBufferSub; |
| 951 | CDR_getStatus = ISOgetStatus; |
| 952 | |
| 953 | CDR_getDriveLetter = CDR__getDriveLetter; |
| 954 | CDR_configure = CDR__configure; |
| 955 | CDR_test = CDR__test; |
| 956 | CDR_about = CDR__about; |
| 957 | CDR_setfilename = CDR__setfilename; |
| 958 | |
| 959 | numtracks = 0; |
| 960 | } |
| 961 | |
| 962 | int cdrIsoActive(void) { |
| 963 | return (cdHandle != NULL); |
| 964 | } |