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