| 1 | /*************************************************************************** |
| 2 | * Copyright (C) 2007 PCSX-df Team * |
| 3 | * Copyright (C) 2009 Wei Mingzhi * |
| 4 | * Copyright (C) 2012 notaz * |
| 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 * |
| 18 | * Free Software Foundation, Inc., * |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * |
| 20 | ***************************************************************************/ |
| 21 | |
| 22 | #include "psxcommon.h" |
| 23 | #include "plugins.h" |
| 24 | #include "cdrom.h" |
| 25 | #include "cdriso.h" |
| 26 | #include "ppf.h" |
| 27 | |
| 28 | #include <errno.h> |
| 29 | #include <zlib.h> |
| 30 | #ifdef HAVE_CHD |
| 31 | #include <chd.h> |
| 32 | #endif |
| 33 | |
| 34 | #ifdef _WIN32 |
| 35 | #define strcasecmp _stricmp |
| 36 | #else |
| 37 | #include <sys/types.h> |
| 38 | #include <sys/stat.h> |
| 39 | #include <unistd.h> |
| 40 | #if P_HAVE_PTHREAD |
| 41 | #include <pthread.h> |
| 42 | #include <sys/time.h> |
| 43 | #endif |
| 44 | #endif |
| 45 | |
| 46 | // to enable the USE_READ_THREAD code, fix: |
| 47 | // - https://github.com/notaz/pcsx_rearmed/issues/257 |
| 48 | // - ISOgetBufferSub to not race with async code |
| 49 | #define USE_READ_THREAD 0 //P_HAVE_PTHREAD |
| 50 | |
| 51 | #ifdef USE_LIBRETRO_VFS |
| 52 | #include <streams/file_stream_transforms.h> |
| 53 | #undef fseeko |
| 54 | #undef ftello |
| 55 | #undef rewind |
| 56 | #define ftello rftell |
| 57 | #define fseeko rfseek |
| 58 | #define rewind(f_) rfseek(f_, 0, SEEK_SET) |
| 59 | #endif |
| 60 | |
| 61 | #define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1)) |
| 62 | |
| 63 | unsigned int cdrIsoMultidiskCount; |
| 64 | unsigned int cdrIsoMultidiskSelect; |
| 65 | |
| 66 | static FILE *cdHandle = NULL; |
| 67 | static FILE *cddaHandle = NULL; |
| 68 | static FILE *subHandle = NULL; |
| 69 | |
| 70 | static boolean subChanMixed = FALSE; |
| 71 | static boolean subChanRaw = FALSE; |
| 72 | |
| 73 | static boolean multifile = FALSE; |
| 74 | |
| 75 | static unsigned char cdbuffer[CD_FRAMESIZE_RAW]; |
| 76 | static unsigned char subbuffer[SUB_FRAMESIZE]; |
| 77 | |
| 78 | static boolean playing = FALSE; |
| 79 | static boolean cddaBigEndian = FALSE; |
| 80 | /* Frame offset into CD image where pregap data would be found if it was there. |
| 81 | * If a game seeks there we must *not* return subchannel data since it's |
| 82 | * not in the CD image, so that cdrom code can fake subchannel data instead. |
| 83 | * XXX: there could be multiple pregaps but PSX dumps only have one? */ |
| 84 | static unsigned int pregapOffset; |
| 85 | |
| 86 | static unsigned int cddaCurPos; |
| 87 | |
| 88 | // compressed image stuff |
| 89 | static struct { |
| 90 | unsigned char buff_raw[16][CD_FRAMESIZE_RAW]; |
| 91 | unsigned char buff_compressed[CD_FRAMESIZE_RAW * 16 + 100]; |
| 92 | off_t *index_table; |
| 93 | unsigned int index_len; |
| 94 | unsigned int block_shift; |
| 95 | unsigned int current_block; |
| 96 | unsigned int sector_in_blk; |
| 97 | } *compr_img; |
| 98 | |
| 99 | #ifdef HAVE_CHD |
| 100 | static struct { |
| 101 | unsigned char *buffer; |
| 102 | chd_file* chd; |
| 103 | const chd_header* header; |
| 104 | unsigned int sectors_per_hunk; |
| 105 | unsigned int current_hunk[2]; |
| 106 | unsigned int current_buffer; |
| 107 | unsigned int sector_in_hunk; |
| 108 | } *chd_img; |
| 109 | #else |
| 110 | #define chd_img 0 |
| 111 | #endif |
| 112 | |
| 113 | static int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector); |
| 114 | static int (*cdimg_read_sub_func)(FILE *f, int sector); |
| 115 | |
| 116 | char* CALLBACK CDR__getDriveLetter(void); |
| 117 | long CALLBACK CDR__configure(void); |
| 118 | long CALLBACK CDR__test(void); |
| 119 | void CALLBACK CDR__about(void); |
| 120 | long CALLBACK CDR__setfilename(char *filename); |
| 121 | long CALLBACK CDR__getStatus(struct CdrStat *stat); |
| 122 | |
| 123 | static void DecodeRawSubData(void); |
| 124 | |
| 125 | struct trackinfo { |
| 126 | enum {DATA=1, CDDA} type; |
| 127 | char start[3]; // MSF-format |
| 128 | char length[3]; // MSF-format |
| 129 | FILE *handle; // for multi-track images CDDA |
| 130 | unsigned int start_offset; // byte offset from start of above file (chd: sector offset) |
| 131 | }; |
| 132 | |
| 133 | #define MAXTRACKS 100 /* How many tracks can a CD hold? */ |
| 134 | |
| 135 | static int numtracks = 0; |
| 136 | static struct trackinfo ti[MAXTRACKS]; |
| 137 | |
| 138 | // get a sector from a msf-array |
| 139 | static unsigned int msf2sec(char *msf) { |
| 140 | return ((msf[0] * 60 + msf[1]) * 75) + msf[2]; |
| 141 | } |
| 142 | |
| 143 | static void sec2msf(unsigned int s, char *msf) { |
| 144 | msf[0] = s / 75 / 60; |
| 145 | s = s - msf[0] * 75 * 60; |
| 146 | msf[1] = s / 75; |
| 147 | s = s - msf[1] * 75; |
| 148 | msf[2] = s; |
| 149 | } |
| 150 | |
| 151 | // divide a string of xx:yy:zz into m, s, f |
| 152 | static void tok2msf(char *time, char *msf) { |
| 153 | char *token; |
| 154 | |
| 155 | token = strtok(time, ":"); |
| 156 | if (token) { |
| 157 | msf[0] = atoi(token); |
| 158 | } |
| 159 | else { |
| 160 | msf[0] = 0; |
| 161 | } |
| 162 | |
| 163 | token = strtok(NULL, ":"); |
| 164 | if (token) { |
| 165 | msf[1] = atoi(token); |
| 166 | } |
| 167 | else { |
| 168 | msf[1] = 0; |
| 169 | } |
| 170 | |
| 171 | token = strtok(NULL, ":"); |
| 172 | if (token) { |
| 173 | msf[2] = atoi(token); |
| 174 | } |
| 175 | else { |
| 176 | msf[2] = 0; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | static off_t get_size(FILE *f) |
| 181 | { |
| 182 | off_t old, size; |
| 183 | #if !defined(USE_LIBRETRO_VFS) |
| 184 | struct stat st; |
| 185 | if (fstat(fileno(f), &st) == 0) |
| 186 | return st.st_size; |
| 187 | #endif |
| 188 | old = ftello(f); |
| 189 | fseeko(f, 0, SEEK_END); |
| 190 | size = ftello(f); |
| 191 | fseeko(f, old, SEEK_SET); |
| 192 | return size; |
| 193 | } |
| 194 | |
| 195 | // this function tries to get the .toc file of the given .bin |
| 196 | // the necessary data is put into the ti (trackinformation)-array |
| 197 | static int parsetoc(const char *isofile) { |
| 198 | char tocname[MAXPATHLEN]; |
| 199 | FILE *fi; |
| 200 | char linebuf[256], tmp[256], name[256]; |
| 201 | char *token; |
| 202 | char time[20], time2[20]; |
| 203 | unsigned int t, sector_offs, sector_size; |
| 204 | unsigned int current_zero_gap = 0; |
| 205 | |
| 206 | numtracks = 0; |
| 207 | |
| 208 | // copy name of the iso and change extension from .bin to .toc |
| 209 | strncpy(tocname, isofile, sizeof(tocname)); |
| 210 | tocname[MAXPATHLEN - 1] = '\0'; |
| 211 | if (strlen(tocname) >= 4) { |
| 212 | strcpy(tocname + strlen(tocname) - 4, ".toc"); |
| 213 | } |
| 214 | else { |
| 215 | return -1; |
| 216 | } |
| 217 | |
| 218 | if ((fi = fopen(tocname, "r")) == NULL) { |
| 219 | // try changing extension to .cue (to satisfy some stupid tutorials) |
| 220 | strcpy(tocname + strlen(tocname) - 4, ".cue"); |
| 221 | if ((fi = fopen(tocname, "r")) == NULL) { |
| 222 | // if filename is image.toc.bin, try removing .bin (for Brasero) |
| 223 | strcpy(tocname, isofile); |
| 224 | t = strlen(tocname); |
| 225 | if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) { |
| 226 | tocname[t - 4] = '\0'; |
| 227 | if ((fi = fopen(tocname, "r")) == NULL) { |
| 228 | return -1; |
| 229 | } |
| 230 | } |
| 231 | else { |
| 232 | return -1; |
| 233 | } |
| 234 | } |
| 235 | // check if it's really a TOC named as a .cue |
| 236 | if (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 237 | token = strtok(linebuf, " "); |
| 238 | if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) { |
| 239 | fclose(fi); |
| 240 | return -1; |
| 241 | } |
| 242 | } |
| 243 | fseek(fi, 0, SEEK_SET); |
| 244 | } |
| 245 | |
| 246 | memset(&ti, 0, sizeof(ti)); |
| 247 | cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio |
| 248 | |
| 249 | sector_size = CD_FRAMESIZE_RAW; |
| 250 | sector_offs = 2 * 75; |
| 251 | |
| 252 | // parse the .toc file |
| 253 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 254 | // search for tracks |
| 255 | strncpy(tmp, linebuf, sizeof(linebuf)); |
| 256 | token = strtok(tmp, " "); |
| 257 | |
| 258 | if (token == NULL) continue; |
| 259 | |
| 260 | if (!strcmp(token, "TRACK")) { |
| 261 | sector_offs += current_zero_gap; |
| 262 | current_zero_gap = 0; |
| 263 | |
| 264 | // get type of track |
| 265 | token = strtok(NULL, " "); |
| 266 | numtracks++; |
| 267 | |
| 268 | if (!strncmp(token, "MODE2_RAW", 9)) { |
| 269 | ti[numtracks].type = DATA; |
| 270 | sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0 |
| 271 | |
| 272 | // check if this image contains mixed subchannel data |
| 273 | token = strtok(NULL, " "); |
| 274 | if (token != NULL && !strncmp(token, "RW", 2)) { |
| 275 | sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE; |
| 276 | subChanMixed = TRUE; |
| 277 | if (!strncmp(token, "RW_RAW", 6)) |
| 278 | subChanRaw = TRUE; |
| 279 | } |
| 280 | } |
| 281 | else if (!strncmp(token, "AUDIO", 5)) { |
| 282 | ti[numtracks].type = CDDA; |
| 283 | } |
| 284 | } |
| 285 | else if (!strcmp(token, "DATAFILE")) { |
| 286 | if (ti[numtracks].type == CDDA) { |
| 287 | sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2); |
| 288 | ti[numtracks].start_offset = t; |
| 289 | t = t / sector_size + sector_offs; |
| 290 | sec2msf(t, (char *)&ti[numtracks].start); |
| 291 | tok2msf((char *)&time2, (char *)&ti[numtracks].length); |
| 292 | } |
| 293 | else { |
| 294 | sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time); |
| 295 | tok2msf((char *)&time, (char *)&ti[numtracks].length); |
| 296 | } |
| 297 | } |
| 298 | else if (!strcmp(token, "FILE")) { |
| 299 | sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2); |
| 300 | tok2msf((char *)&time, (char *)&ti[numtracks].start); |
| 301 | t += msf2sec(ti[numtracks].start) * sector_size; |
| 302 | ti[numtracks].start_offset = t; |
| 303 | t = t / sector_size + sector_offs; |
| 304 | sec2msf(t, (char *)&ti[numtracks].start); |
| 305 | tok2msf((char *)&time2, (char *)&ti[numtracks].length); |
| 306 | } |
| 307 | else if (!strcmp(token, "ZERO") || !strcmp(token, "SILENCE")) { |
| 308 | // skip unneeded optional fields |
| 309 | while (token != NULL) { |
| 310 | token = strtok(NULL, " "); |
| 311 | if (strchr(token, ':') != NULL) |
| 312 | break; |
| 313 | } |
| 314 | if (token != NULL) { |
| 315 | tok2msf(token, tmp); |
| 316 | current_zero_gap = msf2sec(tmp); |
| 317 | } |
| 318 | if (numtracks > 1) { |
| 319 | t = ti[numtracks - 1].start_offset; |
| 320 | t /= sector_size; |
| 321 | pregapOffset = t + msf2sec(ti[numtracks - 1].length); |
| 322 | } |
| 323 | } |
| 324 | else if (!strcmp(token, "START")) { |
| 325 | token = strtok(NULL, " "); |
| 326 | if (token != NULL && strchr(token, ':')) { |
| 327 | tok2msf(token, tmp); |
| 328 | t = msf2sec(tmp); |
| 329 | ti[numtracks].start_offset += (t - current_zero_gap) * sector_size; |
| 330 | t = msf2sec(ti[numtracks].start) + t; |
| 331 | sec2msf(t, (char *)&ti[numtracks].start); |
| 332 | } |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | fclose(fi); |
| 337 | |
| 338 | return 0; |
| 339 | } |
| 340 | |
| 341 | // this function tries to get the .cue file of the given .bin |
| 342 | // the necessary data is put into the ti (trackinformation)-array |
| 343 | static int parsecue(const char *isofile) { |
| 344 | char cuename[MAXPATHLEN]; |
| 345 | char filepath[MAXPATHLEN]; |
| 346 | char *incue_fname; |
| 347 | FILE *fi; |
| 348 | FILE *ftmp = NULL; |
| 349 | char *token; |
| 350 | char time[20]; |
| 351 | char *tmp; |
| 352 | char linebuf[256], tmpb[256], dummy[256]; |
| 353 | unsigned int incue_max_len; |
| 354 | unsigned int t, file_len, mode, sector_offs; |
| 355 | unsigned int sector_size = 2352; |
| 356 | |
| 357 | numtracks = 0; |
| 358 | |
| 359 | // copy name of the iso and change extension from .bin to .cue |
| 360 | strncpy(cuename, isofile, sizeof(cuename)); |
| 361 | cuename[MAXPATHLEN - 1] = '\0'; |
| 362 | if (strlen(cuename) < 4) |
| 363 | return -1; |
| 364 | if (strcasecmp(cuename + strlen(cuename) - 4, ".cue") == 0) { |
| 365 | // it's already open as cdHandle |
| 366 | fi = cdHandle; |
| 367 | } |
| 368 | else { |
| 369 | // If 'isofile' is a '.cd<X>' file, use it as a .cue file |
| 370 | // and don't try to search the additional .cue file |
| 371 | if (strncasecmp(cuename + strlen(cuename) - 4, ".cd", 3) != 0 ) |
| 372 | strcpy(cuename + strlen(cuename) - 4, ".cue"); |
| 373 | |
| 374 | if ((ftmp = fopen(cuename, "r")) == NULL) |
| 375 | return -1; |
| 376 | fi = ftmp; |
| 377 | } |
| 378 | |
| 379 | // Some stupid tutorials wrongly tell users to use cdrdao to rip a |
| 380 | // "bin/cue" image, which is in fact a "bin/toc" image. So let's check |
| 381 | // that... |
| 382 | if (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 383 | if (!strncmp(linebuf, "CD_ROM_XA", 9)) { |
| 384 | // Don't proceed further, as this is actually a .toc file rather |
| 385 | // than a .cue file. |
| 386 | if (ftmp) |
| 387 | fclose(ftmp); |
| 388 | return parsetoc(isofile); |
| 389 | } |
| 390 | rewind(fi); |
| 391 | } |
| 392 | |
| 393 | // build a path for files referenced in .cue |
| 394 | strncpy(filepath, cuename, sizeof(filepath)); |
| 395 | tmp = strrchr(filepath, '/'); |
| 396 | if (tmp == NULL) |
| 397 | tmp = strrchr(filepath, '\\'); |
| 398 | if (tmp != NULL) |
| 399 | tmp++; |
| 400 | else |
| 401 | tmp = filepath; |
| 402 | *tmp = 0; |
| 403 | filepath[sizeof(filepath) - 1] = 0; |
| 404 | incue_fname = tmp; |
| 405 | incue_max_len = sizeof(filepath) - (tmp - filepath) - 1; |
| 406 | |
| 407 | memset(&ti, 0, sizeof(ti)); |
| 408 | |
| 409 | file_len = 0; |
| 410 | sector_offs = 2 * 75; |
| 411 | |
| 412 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 413 | strncpy(dummy, linebuf, sizeof(linebuf)); |
| 414 | token = strtok(dummy, " "); |
| 415 | |
| 416 | if (token == NULL) { |
| 417 | continue; |
| 418 | } |
| 419 | |
| 420 | if (!strcmp(token, "TRACK")) { |
| 421 | numtracks++; |
| 422 | |
| 423 | sector_size = 0; |
| 424 | if (strstr(linebuf, "AUDIO") != NULL) { |
| 425 | ti[numtracks].type = CDDA; |
| 426 | sector_size = 2352; |
| 427 | } |
| 428 | else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, §or_size) == 3) |
| 429 | ti[numtracks].type = DATA; |
| 430 | else { |
| 431 | SysPrintf(".cue: failed to parse TRACK\n"); |
| 432 | ti[numtracks].type = numtracks == 1 ? DATA : CDDA; |
| 433 | } |
| 434 | if (sector_size == 0) |
| 435 | sector_size = 2352; |
| 436 | } |
| 437 | else if (!strcmp(token, "INDEX")) { |
| 438 | if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2) |
| 439 | SysPrintf(".cue: failed to parse INDEX\n"); |
| 440 | tok2msf(time, (char *)&ti[numtracks].start); |
| 441 | |
| 442 | t = msf2sec(ti[numtracks].start); |
| 443 | ti[numtracks].start_offset = t * sector_size; |
| 444 | t += sector_offs; |
| 445 | sec2msf(t, ti[numtracks].start); |
| 446 | |
| 447 | // default track length to file length |
| 448 | t = file_len - ti[numtracks].start_offset / sector_size; |
| 449 | sec2msf(t, ti[numtracks].length); |
| 450 | |
| 451 | if (numtracks > 1 && ti[numtracks].handle == NULL) { |
| 452 | // this track uses the same file as the last, |
| 453 | // start of this track is last track's end |
| 454 | t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start); |
| 455 | sec2msf(t, ti[numtracks - 1].length); |
| 456 | } |
| 457 | if (numtracks > 1 && pregapOffset == -1) |
| 458 | pregapOffset = ti[numtracks].start_offset / sector_size; |
| 459 | } |
| 460 | else if (!strcmp(token, "PREGAP")) { |
| 461 | if (sscanf(linebuf, " PREGAP %8s", time) == 1) { |
| 462 | tok2msf(time, dummy); |
| 463 | sector_offs += msf2sec(dummy); |
| 464 | } |
| 465 | pregapOffset = -1; // mark to fill track start_offset |
| 466 | } |
| 467 | else if (!strcmp(token, "FILE")) { |
| 468 | t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb); |
| 469 | if (t != 1) |
| 470 | sscanf(linebuf, " FILE %255s", tmpb); |
| 471 | |
| 472 | tmp = strrchr(tmpb, '\\'); |
| 473 | if (tmp == NULL) |
| 474 | tmp = strrchr(tmpb, '/'); |
| 475 | if (tmp != NULL) |
| 476 | tmp++; |
| 477 | else |
| 478 | tmp = tmpb; |
| 479 | strncpy(incue_fname, tmp, incue_max_len); |
| 480 | ti[numtracks + 1].handle = fopen(filepath, "rb"); |
| 481 | |
| 482 | // update global offset if this is not first file in this .cue |
| 483 | if (numtracks + 1 > 1) { |
| 484 | multifile = 1; |
| 485 | sector_offs += file_len; |
| 486 | } |
| 487 | |
| 488 | file_len = 0; |
| 489 | if (ti[numtracks + 1].handle == NULL) { |
| 490 | SysPrintf(_("\ncould not open: %s\n"), filepath); |
| 491 | continue; |
| 492 | } |
| 493 | file_len = get_size(ti[numtracks + 1].handle) / 2352; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | if (ftmp) |
| 498 | fclose(ftmp); |
| 499 | |
| 500 | // if there are no tracks detected, then it's not a cue file |
| 501 | if (!numtracks) |
| 502 | return -1; |
| 503 | |
| 504 | // the data track handle is always in cdHandle |
| 505 | if (ti[1].handle) { |
| 506 | fclose(cdHandle); |
| 507 | cdHandle = ti[1].handle; |
| 508 | ti[1].handle = NULL; |
| 509 | } |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | // this function tries to get the .ccd file of the given .img |
| 514 | // the necessary data is put into the ti (trackinformation)-array |
| 515 | static int parseccd(const char *isofile) { |
| 516 | char ccdname[MAXPATHLEN]; |
| 517 | FILE *fi; |
| 518 | char linebuf[256]; |
| 519 | unsigned int t; |
| 520 | |
| 521 | numtracks = 0; |
| 522 | |
| 523 | // copy name of the iso and change extension from .img to .ccd |
| 524 | strncpy(ccdname, isofile, sizeof(ccdname)); |
| 525 | ccdname[MAXPATHLEN - 1] = '\0'; |
| 526 | if (strlen(ccdname) >= 4) { |
| 527 | strcpy(ccdname + strlen(ccdname) - 4, ".ccd"); |
| 528 | } |
| 529 | else { |
| 530 | return -1; |
| 531 | } |
| 532 | |
| 533 | if ((fi = fopen(ccdname, "r")) == NULL) { |
| 534 | return -1; |
| 535 | } |
| 536 | |
| 537 | memset(&ti, 0, sizeof(ti)); |
| 538 | |
| 539 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { |
| 540 | if (!strncmp(linebuf, "[TRACK", 6)){ |
| 541 | numtracks++; |
| 542 | } |
| 543 | else if (!strncmp(linebuf, "MODE=", 5)) { |
| 544 | sscanf(linebuf, "MODE=%d", &t); |
| 545 | ti[numtracks].type = ((t == 0) ? CDDA : DATA); |
| 546 | } |
| 547 | else if (!strncmp(linebuf, "INDEX 1=", 8)) { |
| 548 | sscanf(linebuf, "INDEX 1=%d", &t); |
| 549 | sec2msf(t + 2 * 75, ti[numtracks].start); |
| 550 | ti[numtracks].start_offset = t * 2352; |
| 551 | |
| 552 | // If we've already seen another track, this is its end |
| 553 | if (numtracks > 1) { |
| 554 | t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start); |
| 555 | sec2msf(t, ti[numtracks - 1].length); |
| 556 | } |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | fclose(fi); |
| 561 | |
| 562 | // Fill out the last track's end based on size |
| 563 | if (numtracks >= 1) { |
| 564 | t = get_size(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75; |
| 565 | sec2msf(t, ti[numtracks].length); |
| 566 | } |
| 567 | |
| 568 | return 0; |
| 569 | } |
| 570 | |
| 571 | // this function tries to get the .mds file of the given .mdf |
| 572 | // the necessary data is put into the ti (trackinformation)-array |
| 573 | static int parsemds(const char *isofile) { |
| 574 | char mdsname[MAXPATHLEN]; |
| 575 | FILE *fi; |
| 576 | unsigned int offset, extra_offset, l, i; |
| 577 | unsigned short s; |
| 578 | |
| 579 | numtracks = 0; |
| 580 | |
| 581 | // copy name of the iso and change extension from .mdf to .mds |
| 582 | strncpy(mdsname, isofile, sizeof(mdsname)); |
| 583 | mdsname[MAXPATHLEN - 1] = '\0'; |
| 584 | if (strlen(mdsname) >= 4) { |
| 585 | strcpy(mdsname + strlen(mdsname) - 4, ".mds"); |
| 586 | } |
| 587 | else { |
| 588 | return -1; |
| 589 | } |
| 590 | |
| 591 | if ((fi = fopen(mdsname, "rb")) == NULL) { |
| 592 | return -1; |
| 593 | } |
| 594 | |
| 595 | memset(&ti, 0, sizeof(ti)); |
| 596 | |
| 597 | // check if it's a valid mds file |
| 598 | if (fread(&i, 1, sizeof(i), fi) != sizeof(i)) |
| 599 | goto fail_io; |
| 600 | i = SWAP32(i); |
| 601 | if (i != 0x4944454D) { |
| 602 | // not an valid mds file |
| 603 | fclose(fi); |
| 604 | return -1; |
| 605 | } |
| 606 | |
| 607 | // get offset to session block |
| 608 | fseek(fi, 0x50, SEEK_SET); |
| 609 | if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset)) |
| 610 | goto fail_io; |
| 611 | offset = SWAP32(offset); |
| 612 | |
| 613 | // get total number of tracks |
| 614 | offset += 14; |
| 615 | fseek(fi, offset, SEEK_SET); |
| 616 | if (fread(&s, 1, sizeof(s), fi) != sizeof(s)) |
| 617 | goto fail_io; |
| 618 | s = SWAP16(s); |
| 619 | numtracks = s; |
| 620 | |
| 621 | // get offset to track blocks |
| 622 | fseek(fi, 4, SEEK_CUR); |
| 623 | if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset)) |
| 624 | goto fail_io; |
| 625 | offset = SWAP32(offset); |
| 626 | |
| 627 | // skip lead-in data |
| 628 | while (1) { |
| 629 | fseek(fi, offset + 4, SEEK_SET); |
| 630 | if (fgetc(fi) < 0xA0) { |
| 631 | break; |
| 632 | } |
| 633 | offset += 0x50; |
| 634 | } |
| 635 | |
| 636 | // check if the image contains mixed subchannel data |
| 637 | fseek(fi, offset + 1, SEEK_SET); |
| 638 | subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE); |
| 639 | |
| 640 | // read track data |
| 641 | for (i = 1; i <= numtracks; i++) { |
| 642 | fseek(fi, offset, SEEK_SET); |
| 643 | |
| 644 | // get the track type |
| 645 | ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA); |
| 646 | fseek(fi, 8, SEEK_CUR); |
| 647 | |
| 648 | // get the track starting point |
| 649 | ti[i].start[0] = fgetc(fi); |
| 650 | ti[i].start[1] = fgetc(fi); |
| 651 | ti[i].start[2] = fgetc(fi); |
| 652 | |
| 653 | if (fread(&extra_offset, 1, sizeof(extra_offset), fi) != sizeof(extra_offset)) |
| 654 | goto fail_io; |
| 655 | extra_offset = SWAP32(extra_offset); |
| 656 | |
| 657 | // get track start offset (in .mdf) |
| 658 | fseek(fi, offset + 0x28, SEEK_SET); |
| 659 | if (fread(&l, 1, sizeof(l), fi) != sizeof(l)) |
| 660 | goto fail_io; |
| 661 | l = SWAP32(l); |
| 662 | ti[i].start_offset = l; |
| 663 | |
| 664 | // get pregap |
| 665 | fseek(fi, extra_offset, SEEK_SET); |
| 666 | if (fread(&l, 1, sizeof(l), fi) != sizeof(l)) |
| 667 | goto fail_io; |
| 668 | l = SWAP32(l); |
| 669 | if (l != 0 && i > 1) |
| 670 | pregapOffset = msf2sec(ti[i].start); |
| 671 | |
| 672 | // get the track length |
| 673 | if (fread(&l, 1, sizeof(l), fi) != sizeof(l)) |
| 674 | goto fail_io; |
| 675 | l = SWAP32(l); |
| 676 | sec2msf(l, ti[i].length); |
| 677 | |
| 678 | offset += 0x50; |
| 679 | } |
| 680 | fclose(fi); |
| 681 | return 0; |
| 682 | fail_io: |
| 683 | #ifndef NDEBUG |
| 684 | SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__); |
| 685 | #endif |
| 686 | fclose(fi); |
| 687 | return -1; |
| 688 | } |
| 689 | |
| 690 | static int handlepbp(const char *isofile) { |
| 691 | struct { |
| 692 | unsigned int sig; |
| 693 | unsigned int dontcare[8]; |
| 694 | unsigned int psar_offs; |
| 695 | } pbp_hdr; |
| 696 | struct { |
| 697 | unsigned char type; |
| 698 | unsigned char pad0; |
| 699 | unsigned char track; |
| 700 | char index0[3]; |
| 701 | char pad1; |
| 702 | char index1[3]; |
| 703 | } toc_entry; |
| 704 | struct { |
| 705 | unsigned int offset; |
| 706 | unsigned int size; |
| 707 | unsigned int dontcare[6]; |
| 708 | } index_entry; |
| 709 | char psar_sig[11]; |
| 710 | off_t psisoimg_offs, cdimg_base; |
| 711 | unsigned int t, cd_length; |
| 712 | unsigned int offsettab[8]; |
| 713 | unsigned int psar_offs, index_entry_size, index_entry_offset; |
| 714 | const char *ext = NULL; |
| 715 | int i, ret; |
| 716 | |
| 717 | if (strlen(isofile) >= 4) |
| 718 | ext = isofile + strlen(isofile) - 4; |
| 719 | if (ext == NULL || strcasecmp(ext, ".pbp") != 0) |
| 720 | return -1; |
| 721 | |
| 722 | numtracks = 0; |
| 723 | |
| 724 | ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle); |
| 725 | if (ret != sizeof(pbp_hdr)) { |
| 726 | SysPrintf("failed to read pbp\n"); |
| 727 | goto fail_io; |
| 728 | } |
| 729 | |
| 730 | psar_offs = SWAP32(pbp_hdr.psar_offs); |
| 731 | |
| 732 | ret = fseeko(cdHandle, psar_offs, SEEK_SET); |
| 733 | if (ret != 0) { |
| 734 | SysPrintf("failed to seek to %x\n", psar_offs); |
| 735 | goto fail_io; |
| 736 | } |
| 737 | |
| 738 | psisoimg_offs = psar_offs; |
| 739 | if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig)) |
| 740 | goto fail_io; |
| 741 | psar_sig[10] = 0; |
| 742 | if (strcmp(psar_sig, "PSTITLEIMG") == 0) { |
| 743 | // multidisk image? |
| 744 | ret = fseeko(cdHandle, psar_offs + 0x200, SEEK_SET); |
| 745 | if (ret != 0) { |
| 746 | SysPrintf("failed to seek to %x\n", psar_offs + 0x200); |
| 747 | goto fail_io; |
| 748 | } |
| 749 | |
| 750 | if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) { |
| 751 | SysPrintf("failed to read offsettab\n"); |
| 752 | goto fail_io; |
| 753 | } |
| 754 | |
| 755 | for (i = 0; i < sizeof(offsettab) / sizeof(offsettab[0]); i++) { |
| 756 | if (offsettab[i] == 0) |
| 757 | break; |
| 758 | } |
| 759 | cdrIsoMultidiskCount = i; |
| 760 | if (cdrIsoMultidiskCount == 0) { |
| 761 | SysPrintf("multidisk eboot has 0 images?\n"); |
| 762 | goto fail_io; |
| 763 | } |
| 764 | |
| 765 | if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount) |
| 766 | cdrIsoMultidiskSelect = 0; |
| 767 | |
| 768 | psisoimg_offs += SWAP32(offsettab[cdrIsoMultidiskSelect]); |
| 769 | |
| 770 | ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET); |
| 771 | if (ret != 0) { |
| 772 | SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs); |
| 773 | goto fail_io; |
| 774 | } |
| 775 | |
| 776 | if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig)) |
| 777 | goto fail_io; |
| 778 | psar_sig[10] = 0; |
| 779 | } |
| 780 | |
| 781 | if (strcmp(psar_sig, "PSISOIMG00") != 0) { |
| 782 | SysPrintf("bad psar_sig: %s\n", psar_sig); |
| 783 | goto fail_io; |
| 784 | } |
| 785 | |
| 786 | // seek to TOC |
| 787 | ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET); |
| 788 | if (ret != 0) { |
| 789 | SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800); |
| 790 | goto fail_io; |
| 791 | } |
| 792 | |
| 793 | // first 3 entries are special |
| 794 | fseek(cdHandle, sizeof(toc_entry), SEEK_CUR); |
| 795 | if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry)) |
| 796 | goto fail_io; |
| 797 | numtracks = btoi(toc_entry.index1[0]); |
| 798 | |
| 799 | if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry)) |
| 800 | goto fail_io; |
| 801 | cd_length = btoi(toc_entry.index1[0]) * 60 * 75 + |
| 802 | btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]); |
| 803 | |
| 804 | for (i = 1; i <= numtracks; i++) { |
| 805 | if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry)) |
| 806 | goto fail_io; |
| 807 | |
| 808 | ti[i].type = (toc_entry.type == 1) ? CDDA : DATA; |
| 809 | |
| 810 | ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 + |
| 811 | btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]); |
| 812 | ti[i].start_offset *= 2352; |
| 813 | ti[i].start[0] = btoi(toc_entry.index1[0]); |
| 814 | ti[i].start[1] = btoi(toc_entry.index1[1]); |
| 815 | ti[i].start[2] = btoi(toc_entry.index1[2]); |
| 816 | |
| 817 | if (i > 1) { |
| 818 | t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start); |
| 819 | sec2msf(t, ti[i - 1].length); |
| 820 | } |
| 821 | } |
| 822 | t = cd_length - ti[numtracks].start_offset / 2352; |
| 823 | sec2msf(t, ti[numtracks].length); |
| 824 | |
| 825 | // seek to ISO index |
| 826 | ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET); |
| 827 | if (ret != 0) { |
| 828 | SysPrintf("failed to seek to ISO index\n"); |
| 829 | goto fail_io; |
| 830 | } |
| 831 | |
| 832 | compr_img = calloc(1, sizeof(*compr_img)); |
| 833 | if (compr_img == NULL) |
| 834 | goto fail_io; |
| 835 | |
| 836 | compr_img->block_shift = 4; |
| 837 | compr_img->current_block = (unsigned int)-1; |
| 838 | |
| 839 | compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry); |
| 840 | compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0])); |
| 841 | if (compr_img->index_table == NULL) |
| 842 | goto fail_io; |
| 843 | |
| 844 | cdimg_base = psisoimg_offs + 0x100000; |
| 845 | for (i = 0; i < compr_img->index_len; i++) { |
| 846 | ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle); |
| 847 | if (ret != sizeof(index_entry)) { |
| 848 | SysPrintf("failed to read index_entry #%d\n", i); |
| 849 | goto fail_index; |
| 850 | } |
| 851 | |
| 852 | index_entry_size = SWAP32(index_entry.size); |
| 853 | index_entry_offset = SWAP32(index_entry.offset); |
| 854 | |
| 855 | if (index_entry_size == 0) |
| 856 | break; |
| 857 | |
| 858 | compr_img->index_table[i] = cdimg_base + index_entry_offset; |
| 859 | } |
| 860 | compr_img->index_table[i] = cdimg_base + index_entry_offset + index_entry_size; |
| 861 | |
| 862 | return 0; |
| 863 | |
| 864 | fail_index: |
| 865 | free(compr_img->index_table); |
| 866 | compr_img->index_table = NULL; |
| 867 | goto done; |
| 868 | |
| 869 | fail_io: |
| 870 | SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__); |
| 871 | rewind(cdHandle); |
| 872 | |
| 873 | done: |
| 874 | if (compr_img != NULL) { |
| 875 | free(compr_img); |
| 876 | compr_img = NULL; |
| 877 | } |
| 878 | return -1; |
| 879 | } |
| 880 | |
| 881 | static int handlecbin(const char *isofile) { |
| 882 | struct |
| 883 | { |
| 884 | char magic[4]; |
| 885 | unsigned int header_size; |
| 886 | unsigned long long total_bytes; |
| 887 | unsigned int block_size; |
| 888 | unsigned char ver; // 1 |
| 889 | unsigned char align; |
| 890 | unsigned char rsv_06[2]; |
| 891 | } ciso_hdr; |
| 892 | const char *ext = NULL; |
| 893 | unsigned int *index_table = NULL; |
| 894 | unsigned int index = 0, plain; |
| 895 | int i, ret; |
| 896 | |
| 897 | if (strlen(isofile) >= 5) |
| 898 | ext = isofile + strlen(isofile) - 5; |
| 899 | if (ext == NULL || (strcasecmp(ext + 1, ".cbn") != 0 && strcasecmp(ext, ".cbin") != 0)) |
| 900 | return -1; |
| 901 | |
| 902 | ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle); |
| 903 | if (ret != sizeof(ciso_hdr)) { |
| 904 | SysPrintf("failed to read ciso header\n"); |
| 905 | goto fail_io; |
| 906 | } |
| 907 | |
| 908 | if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) { |
| 909 | SysPrintf("bad ciso header\n"); |
| 910 | goto fail_io; |
| 911 | } |
| 912 | if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) { |
| 913 | ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET); |
| 914 | if (ret != 0) { |
| 915 | SysPrintf("failed to seek to %x\n", ciso_hdr.header_size); |
| 916 | goto fail_io; |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | compr_img = calloc(1, sizeof(*compr_img)); |
| 921 | if (compr_img == NULL) |
| 922 | goto fail_io; |
| 923 | |
| 924 | compr_img->block_shift = 0; |
| 925 | compr_img->current_block = (unsigned int)-1; |
| 926 | |
| 927 | compr_img->index_len = ciso_hdr.total_bytes / ciso_hdr.block_size; |
| 928 | index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0])); |
| 929 | if (index_table == NULL) |
| 930 | goto fail_io; |
| 931 | |
| 932 | ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle); |
| 933 | if (ret != compr_img->index_len) { |
| 934 | SysPrintf("failed to read index table\n"); |
| 935 | goto fail_index; |
| 936 | } |
| 937 | |
| 938 | compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0])); |
| 939 | if (compr_img->index_table == NULL) |
| 940 | goto fail_index; |
| 941 | |
| 942 | for (i = 0; i < compr_img->index_len + 1; i++) { |
| 943 | index = index_table[i]; |
| 944 | plain = index & 0x80000000; |
| 945 | index &= 0x7fffffff; |
| 946 | compr_img->index_table[i] = (off_t)index << ciso_hdr.align; |
| 947 | if (plain) |
| 948 | compr_img->index_table[i] |= OFF_T_MSB; |
| 949 | } |
| 950 | |
| 951 | return 0; |
| 952 | |
| 953 | fail_index: |
| 954 | free(index_table); |
| 955 | fail_io: |
| 956 | if (compr_img != NULL) { |
| 957 | free(compr_img); |
| 958 | compr_img = NULL; |
| 959 | } |
| 960 | rewind(cdHandle); |
| 961 | return -1; |
| 962 | } |
| 963 | |
| 964 | #ifdef HAVE_CHD |
| 965 | static int handlechd(const char *isofile) { |
| 966 | int frame_offset = 150; |
| 967 | int file_offset = 0; |
| 968 | |
| 969 | chd_img = calloc(1, sizeof(*chd_img)); |
| 970 | if (chd_img == NULL) |
| 971 | goto fail_io; |
| 972 | |
| 973 | if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE) |
| 974 | goto fail_io; |
| 975 | |
| 976 | if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE)) |
| 977 | goto fail_io; |
| 978 | |
| 979 | chd_img->header = chd_get_header(chd_img->chd); |
| 980 | |
| 981 | chd_img->buffer = malloc(chd_img->header->hunkbytes * 2); |
| 982 | if (chd_img->buffer == NULL) |
| 983 | goto fail_io; |
| 984 | |
| 985 | chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE); |
| 986 | chd_img->current_hunk[0] = (unsigned int)-1; |
| 987 | chd_img->current_hunk[1] = (unsigned int)-1; |
| 988 | |
| 989 | cddaBigEndian = TRUE; |
| 990 | |
| 991 | numtracks = 0; |
| 992 | memset(ti, 0, sizeof(ti)); |
| 993 | |
| 994 | while (1) |
| 995 | { |
| 996 | struct { |
| 997 | char type[64]; |
| 998 | char subtype[32]; |
| 999 | char pgtype[32]; |
| 1000 | char pgsub[32]; |
| 1001 | uint32_t track; |
| 1002 | uint32_t frames; |
| 1003 | uint32_t pregap; |
| 1004 | uint32_t postgap; |
| 1005 | } md = {}; |
| 1006 | char meta[256]; |
| 1007 | uint32_t meta_size = 0; |
| 1008 | |
| 1009 | if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE) |
| 1010 | sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap); |
| 1011 | else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE) |
| 1012 | sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames); |
| 1013 | else |
| 1014 | break; |
| 1015 | |
| 1016 | SysPrintf("chd: %s\n", meta); |
| 1017 | |
| 1018 | if (md.track == 1) { |
| 1019 | if (!strncmp(md.subtype, "RW", 2)) { |
| 1020 | subChanMixed = TRUE; |
| 1021 | if (!strcmp(md.subtype, "RW_RAW")) |
| 1022 | subChanRaw = TRUE; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA; |
| 1027 | |
| 1028 | sec2msf(frame_offset + md.pregap, ti[md.track].start); |
| 1029 | sec2msf(md.frames, ti[md.track].length); |
| 1030 | |
| 1031 | ti[md.track].start_offset = file_offset + md.pregap; |
| 1032 | |
| 1033 | // XXX: what about postgap? |
| 1034 | frame_offset += md.frames; |
| 1035 | file_offset += md.frames; |
| 1036 | numtracks++; |
| 1037 | } |
| 1038 | |
| 1039 | if (numtracks) |
| 1040 | return 0; |
| 1041 | |
| 1042 | fail_io: |
| 1043 | if (chd_img != NULL) { |
| 1044 | free(chd_img->buffer); |
| 1045 | free(chd_img); |
| 1046 | chd_img = NULL; |
| 1047 | } |
| 1048 | return -1; |
| 1049 | } |
| 1050 | #endif |
| 1051 | |
| 1052 | // this function tries to get the .sub file of the given .img |
| 1053 | static int opensubfile(const char *isoname) { |
| 1054 | char subname[MAXPATHLEN]; |
| 1055 | |
| 1056 | // copy name of the iso and change extension from .img to .sub |
| 1057 | strncpy(subname, isoname, sizeof(subname)); |
| 1058 | subname[MAXPATHLEN - 1] = '\0'; |
| 1059 | if (strlen(subname) >= 4) { |
| 1060 | strcpy(subname + strlen(subname) - 4, ".sub"); |
| 1061 | } |
| 1062 | else { |
| 1063 | return -1; |
| 1064 | } |
| 1065 | |
| 1066 | subHandle = fopen(subname, "rb"); |
| 1067 | if (subHandle == NULL) { |
| 1068 | return -1; |
| 1069 | } |
| 1070 | |
| 1071 | return 0; |
| 1072 | } |
| 1073 | |
| 1074 | static int opensbifile(const char *isoname) { |
| 1075 | char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0"; |
| 1076 | int s; |
| 1077 | |
| 1078 | strncpy(sbiname, isoname, sizeof(sbiname)); |
| 1079 | sbiname[MAXPATHLEN - 1] = '\0'; |
| 1080 | if (strlen(sbiname) >= 4) { |
| 1081 | if (cdrIsoMultidiskCount > 1) { |
| 1082 | sprintf(disknum, "_%i.sbi", cdrIsoMultidiskSelect + 1); |
| 1083 | strcpy(sbiname + strlen(sbiname) - 4, disknum); |
| 1084 | } |
| 1085 | else |
| 1086 | strcpy(sbiname + strlen(sbiname) - 4, ".sbi"); |
| 1087 | } |
| 1088 | else { |
| 1089 | return -1; |
| 1090 | } |
| 1091 | |
| 1092 | s = msf2sec(ti[1].length); |
| 1093 | |
| 1094 | return LoadSBI(sbiname, s); |
| 1095 | } |
| 1096 | |
| 1097 | #if !USE_READ_THREAD |
| 1098 | static void readThreadStop() {} |
| 1099 | static void readThreadStart() {} |
| 1100 | #else |
| 1101 | static pthread_t read_thread_id; |
| 1102 | |
| 1103 | static pthread_cond_t read_thread_msg_avail; |
| 1104 | static pthread_cond_t read_thread_msg_done; |
| 1105 | static pthread_mutex_t read_thread_msg_lock; |
| 1106 | |
| 1107 | static pthread_cond_t sectorbuffer_cond; |
| 1108 | static pthread_mutex_t sectorbuffer_lock; |
| 1109 | |
| 1110 | static boolean read_thread_running = FALSE; |
| 1111 | static int read_thread_sector_start = -1; |
| 1112 | static int read_thread_sector_end = -1; |
| 1113 | |
| 1114 | typedef struct { |
| 1115 | int sector; |
| 1116 | long ret; |
| 1117 | unsigned char data[CD_FRAMESIZE_RAW]; |
| 1118 | } SectorBufferEntry; |
| 1119 | |
| 1120 | #define SECTOR_BUFFER_SIZE 4096 |
| 1121 | |
| 1122 | static SectorBufferEntry *sectorbuffer; |
| 1123 | static size_t sectorbuffer_index; |
| 1124 | |
| 1125 | int (*sync_cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector); |
| 1126 | unsigned char *(*sync_CDR_getBuffer)(void); |
| 1127 | |
| 1128 | static unsigned char * CALLBACK ISOgetBuffer_async(void); |
| 1129 | static int cdread_async(FILE *f, unsigned int base, void *dest, int sector); |
| 1130 | |
| 1131 | static void *readThreadMain(void *param) { |
| 1132 | int max_sector = -1; |
| 1133 | int requested_sector_start = -1; |
| 1134 | int requested_sector_end = -1; |
| 1135 | int last_read_sector = -1; |
| 1136 | int index = 0; |
| 1137 | |
| 1138 | int ra_sector = -1; |
| 1139 | int max_ra = 128; |
| 1140 | int initial_ra = 1; |
| 1141 | int speedmult_ra = 4; |
| 1142 | |
| 1143 | int ra_count = 0; |
| 1144 | int how_far_ahead = 0; |
| 1145 | |
| 1146 | unsigned char tmpdata[CD_FRAMESIZE_RAW]; |
| 1147 | long ret; |
| 1148 | |
| 1149 | max_sector = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length); |
| 1150 | |
| 1151 | while(1) { |
| 1152 | pthread_mutex_lock(&read_thread_msg_lock); |
| 1153 | |
| 1154 | // If we don't have readahead and we don't have a sector request, wait for one. |
| 1155 | // If we still have readahead to go, don't block, just keep going. |
| 1156 | // And if we ever have a sector request pending, acknowledge and reset it. |
| 1157 | |
| 1158 | if (!ra_count) { |
| 1159 | if (read_thread_sector_start == -1 && read_thread_running) { |
| 1160 | pthread_cond_wait(&read_thread_msg_avail, &read_thread_msg_lock); |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | if (read_thread_sector_start != -1) { |
| 1165 | requested_sector_start = read_thread_sector_start; |
| 1166 | requested_sector_end = read_thread_sector_end; |
| 1167 | read_thread_sector_start = -1; |
| 1168 | read_thread_sector_end = -1; |
| 1169 | pthread_cond_signal(&read_thread_msg_done); |
| 1170 | } |
| 1171 | |
| 1172 | pthread_mutex_unlock(&read_thread_msg_lock); |
| 1173 | |
| 1174 | if (!read_thread_running) |
| 1175 | break; |
| 1176 | |
| 1177 | // Readahead code, based on the implementation in mednafen psx's cdromif.cpp |
| 1178 | if (requested_sector_start != -1) { |
| 1179 | if (last_read_sector != -1 && last_read_sector == (requested_sector_start - 1)) { |
| 1180 | how_far_ahead = ra_sector - requested_sector_end; |
| 1181 | |
| 1182 | if(how_far_ahead <= max_ra) |
| 1183 | ra_count = (max_ra - how_far_ahead + 1 ? max_ra - how_far_ahead + 1 : speedmult_ra); |
| 1184 | else |
| 1185 | ra_count++; |
| 1186 | } else if (requested_sector_end != last_read_sector) { |
| 1187 | ra_sector = requested_sector_end; |
| 1188 | ra_count = initial_ra; |
| 1189 | } |
| 1190 | |
| 1191 | last_read_sector = requested_sector_end; |
| 1192 | } |
| 1193 | |
| 1194 | index = ra_sector % SECTOR_BUFFER_SIZE; |
| 1195 | |
| 1196 | // check for end of CD |
| 1197 | if (ra_count && ra_sector >= max_sector) { |
| 1198 | ra_count = 0; |
| 1199 | pthread_mutex_lock(§orbuffer_lock); |
| 1200 | sectorbuffer[index].ret = -1; |
| 1201 | sectorbuffer[index].sector = ra_sector; |
| 1202 | pthread_cond_signal(§orbuffer_cond); |
| 1203 | pthread_mutex_unlock(§orbuffer_lock); |
| 1204 | } |
| 1205 | |
| 1206 | if (ra_count) { |
| 1207 | pthread_mutex_lock(§orbuffer_lock); |
| 1208 | if (sectorbuffer[index].sector != ra_sector) { |
| 1209 | pthread_mutex_unlock(§orbuffer_lock); |
| 1210 | |
| 1211 | ret = sync_cdimg_read_func(cdHandle, 0, tmpdata, ra_sector); |
| 1212 | |
| 1213 | pthread_mutex_lock(§orbuffer_lock); |
| 1214 | sectorbuffer[index].ret = ret; |
| 1215 | sectorbuffer[index].sector = ra_sector; |
| 1216 | memcpy(sectorbuffer[index].data, tmpdata, CD_FRAMESIZE_RAW); |
| 1217 | } |
| 1218 | pthread_cond_signal(§orbuffer_cond); |
| 1219 | pthread_mutex_unlock(§orbuffer_lock); |
| 1220 | |
| 1221 | ra_sector++; |
| 1222 | ra_count--; |
| 1223 | } |
| 1224 | } |
| 1225 | |
| 1226 | return NULL; |
| 1227 | } |
| 1228 | |
| 1229 | static void readThreadStop() { |
| 1230 | if (read_thread_running == TRUE) { |
| 1231 | read_thread_running = FALSE; |
| 1232 | pthread_cond_signal(&read_thread_msg_avail); |
| 1233 | pthread_join(read_thread_id, NULL); |
| 1234 | } |
| 1235 | |
| 1236 | pthread_cond_destroy(&read_thread_msg_done); |
| 1237 | pthread_cond_destroy(&read_thread_msg_avail); |
| 1238 | pthread_mutex_destroy(&read_thread_msg_lock); |
| 1239 | |
| 1240 | pthread_cond_destroy(§orbuffer_cond); |
| 1241 | pthread_mutex_destroy(§orbuffer_lock); |
| 1242 | |
| 1243 | CDR_getBuffer = sync_CDR_getBuffer; |
| 1244 | cdimg_read_func = sync_cdimg_read_func; |
| 1245 | |
| 1246 | free(sectorbuffer); |
| 1247 | sectorbuffer = NULL; |
| 1248 | } |
| 1249 | |
| 1250 | static void readThreadStart() { |
| 1251 | SysPrintf("Starting async CD thread\n"); |
| 1252 | |
| 1253 | if (read_thread_running == TRUE) |
| 1254 | return; |
| 1255 | |
| 1256 | read_thread_running = TRUE; |
| 1257 | read_thread_sector_start = -1; |
| 1258 | read_thread_sector_end = -1; |
| 1259 | sectorbuffer_index = 0; |
| 1260 | |
| 1261 | sectorbuffer = calloc(SECTOR_BUFFER_SIZE, sizeof(SectorBufferEntry)); |
| 1262 | if(!sectorbuffer) |
| 1263 | goto error; |
| 1264 | |
| 1265 | sectorbuffer[0].sector = -1; // Otherwise we might think we've already fetched sector 0! |
| 1266 | |
| 1267 | sync_CDR_getBuffer = CDR_getBuffer; |
| 1268 | CDR_getBuffer = ISOgetBuffer_async; |
| 1269 | sync_cdimg_read_func = cdimg_read_func; |
| 1270 | cdimg_read_func = cdread_async; |
| 1271 | |
| 1272 | if (pthread_cond_init(&read_thread_msg_avail, NULL) || |
| 1273 | pthread_cond_init(&read_thread_msg_done, NULL) || |
| 1274 | pthread_mutex_init(&read_thread_msg_lock, NULL) || |
| 1275 | pthread_cond_init(§orbuffer_cond, NULL) || |
| 1276 | pthread_mutex_init(§orbuffer_lock, NULL) || |
| 1277 | pthread_create(&read_thread_id, NULL, readThreadMain, NULL)) |
| 1278 | goto error; |
| 1279 | |
| 1280 | return; |
| 1281 | |
| 1282 | error: |
| 1283 | SysPrintf("Error starting async CD thread\n"); |
| 1284 | SysPrintf("Falling back to sync\n"); |
| 1285 | |
| 1286 | readThreadStop(); |
| 1287 | } |
| 1288 | #endif |
| 1289 | |
| 1290 | static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector) |
| 1291 | { |
| 1292 | int ret; |
| 1293 | if (!f) |
| 1294 | return -1; |
| 1295 | if (fseeko(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET)) |
| 1296 | goto fail_io; |
| 1297 | ret = fread(dest, 1, CD_FRAMESIZE_RAW, f); |
| 1298 | if (ret <= 0) |
| 1299 | goto fail_io; |
| 1300 | return ret; |
| 1301 | |
| 1302 | fail_io: |
| 1303 | // often happens in cdda gaps of a split cue/bin, so not logged |
| 1304 | //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector); |
| 1305 | return -1; |
| 1306 | } |
| 1307 | |
| 1308 | static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector) |
| 1309 | { |
| 1310 | int ret; |
| 1311 | |
| 1312 | if (!f) |
| 1313 | return -1; |
| 1314 | if (fseeko(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET)) |
| 1315 | goto fail_io; |
| 1316 | ret = fread(dest, 1, CD_FRAMESIZE_RAW, f); |
| 1317 | if (ret <= 0) |
| 1318 | goto fail_io; |
| 1319 | return ret; |
| 1320 | |
| 1321 | fail_io: |
| 1322 | //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector); |
| 1323 | return -1; |
| 1324 | } |
| 1325 | |
| 1326 | static int cdread_sub_sub_mixed(FILE *f, int sector) |
| 1327 | { |
| 1328 | if (!f) |
| 1329 | return -1; |
| 1330 | if (fseeko(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + CD_FRAMESIZE_RAW, SEEK_SET)) |
| 1331 | goto fail_io; |
| 1332 | if (fread(subbuffer, 1, SUB_FRAMESIZE, f) != SUB_FRAMESIZE) |
| 1333 | goto fail_io; |
| 1334 | |
| 1335 | return SUB_FRAMESIZE; |
| 1336 | |
| 1337 | fail_io: |
| 1338 | SysPrintf("subchannel: file IO error %d, sector %u\n", errno, sector); |
| 1339 | return -1; |
| 1340 | } |
| 1341 | |
| 1342 | static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size) |
| 1343 | { |
| 1344 | static z_stream z; |
| 1345 | int ret = 0; |
| 1346 | |
| 1347 | if (z.zalloc == NULL) { |
| 1348 | // XXX: one-time leak here.. |
| 1349 | z.next_in = Z_NULL; |
| 1350 | z.avail_in = 0; |
| 1351 | z.zalloc = Z_NULL; |
| 1352 | z.zfree = Z_NULL; |
| 1353 | z.opaque = Z_NULL; |
| 1354 | ret = inflateInit2(&z, -15); |
| 1355 | } |
| 1356 | else |
| 1357 | ret = inflateReset(&z); |
| 1358 | if (ret != Z_OK) |
| 1359 | return ret; |
| 1360 | |
| 1361 | z.next_in = in; |
| 1362 | z.avail_in = in_size; |
| 1363 | z.next_out = out; |
| 1364 | z.avail_out = *out_size; |
| 1365 | |
| 1366 | ret = inflate(&z, Z_NO_FLUSH); |
| 1367 | //inflateEnd(&z); |
| 1368 | |
| 1369 | *out_size -= z.avail_out; |
| 1370 | return ret == 1 ? 0 : ret; |
| 1371 | } |
| 1372 | |
| 1373 | static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector) |
| 1374 | { |
| 1375 | unsigned long cdbuffer_size, cdbuffer_size_expect; |
| 1376 | unsigned int size; |
| 1377 | int is_compressed; |
| 1378 | off_t start_byte; |
| 1379 | int ret, block; |
| 1380 | |
| 1381 | if (!cdHandle) |
| 1382 | return -1; |
| 1383 | if (base) |
| 1384 | sector += base / 2352; |
| 1385 | |
| 1386 | block = sector >> compr_img->block_shift; |
| 1387 | compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1); |
| 1388 | |
| 1389 | if (block == compr_img->current_block) { |
| 1390 | //printf("hit sect %d\n", sector); |
| 1391 | goto finish; |
| 1392 | } |
| 1393 | |
| 1394 | if (sector >= compr_img->index_len * 16) { |
| 1395 | SysPrintf("sector %d is past img end\n", sector); |
| 1396 | return -1; |
| 1397 | } |
| 1398 | |
| 1399 | start_byte = compr_img->index_table[block] & ~OFF_T_MSB; |
| 1400 | if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) { |
| 1401 | SysPrintf("seek error for block %d at %llx: ", |
| 1402 | block, (long long)start_byte); |
| 1403 | perror(NULL); |
| 1404 | return -1; |
| 1405 | } |
| 1406 | |
| 1407 | is_compressed = !(compr_img->index_table[block] & OFF_T_MSB); |
| 1408 | size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte; |
| 1409 | if (size > sizeof(compr_img->buff_compressed)) { |
| 1410 | SysPrintf("block %d is too large: %u\n", block, size); |
| 1411 | return -1; |
| 1412 | } |
| 1413 | |
| 1414 | if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0], |
| 1415 | 1, size, cdHandle) != size) { |
| 1416 | SysPrintf("read error for block %d at %x: ", block, start_byte); |
| 1417 | perror(NULL); |
| 1418 | return -1; |
| 1419 | } |
| 1420 | |
| 1421 | if (is_compressed) { |
| 1422 | cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift; |
| 1423 | cdbuffer_size = cdbuffer_size_expect; |
| 1424 | ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size); |
| 1425 | if (ret != 0) { |
| 1426 | SysPrintf("uncompress failed with %d for block %d, sector %d\n", |
| 1427 | ret, block, sector); |
| 1428 | return -1; |
| 1429 | } |
| 1430 | if (cdbuffer_size != cdbuffer_size_expect) |
| 1431 | SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size, |
| 1432 | cdbuffer_size_expect, sector); |
| 1433 | } |
| 1434 | |
| 1435 | // done at last! |
| 1436 | compr_img->current_block = block; |
| 1437 | |
| 1438 | finish: |
| 1439 | if (dest != cdbuffer) // copy avoid HACK |
| 1440 | memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk], |
| 1441 | CD_FRAMESIZE_RAW); |
| 1442 | return CD_FRAMESIZE_RAW; |
| 1443 | } |
| 1444 | |
| 1445 | #ifdef HAVE_CHD |
| 1446 | static unsigned char *chd_get_sector(unsigned int current_buffer, unsigned int sector_in_hunk) |
| 1447 | { |
| 1448 | return chd_img->buffer |
| 1449 | + current_buffer * chd_img->header->hunkbytes |
| 1450 | + sector_in_hunk * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE); |
| 1451 | } |
| 1452 | |
| 1453 | static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector) |
| 1454 | { |
| 1455 | int hunk; |
| 1456 | |
| 1457 | sector += base; |
| 1458 | |
| 1459 | hunk = sector / chd_img->sectors_per_hunk; |
| 1460 | chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk; |
| 1461 | |
| 1462 | if (hunk == chd_img->current_hunk[0]) |
| 1463 | chd_img->current_buffer = 0; |
| 1464 | else if (hunk == chd_img->current_hunk[1]) |
| 1465 | chd_img->current_buffer = 1; |
| 1466 | else |
| 1467 | { |
| 1468 | chd_read(chd_img->chd, hunk, chd_img->buffer + |
| 1469 | chd_img->current_buffer * chd_img->header->hunkbytes); |
| 1470 | chd_img->current_hunk[chd_img->current_buffer] = hunk; |
| 1471 | } |
| 1472 | |
| 1473 | if (dest != cdbuffer) // copy avoid HACK |
| 1474 | memcpy(dest, chd_get_sector(chd_img->current_buffer, chd_img->sector_in_hunk), |
| 1475 | CD_FRAMESIZE_RAW); |
| 1476 | return CD_FRAMESIZE_RAW; |
| 1477 | } |
| 1478 | |
| 1479 | static int cdread_sub_chd(FILE *f, int sector) |
| 1480 | { |
| 1481 | unsigned int sector_in_hunk; |
| 1482 | unsigned int buffer; |
| 1483 | int hunk; |
| 1484 | |
| 1485 | if (!subChanMixed) |
| 1486 | return -1; |
| 1487 | |
| 1488 | hunk = sector / chd_img->sectors_per_hunk; |
| 1489 | sector_in_hunk = sector % chd_img->sectors_per_hunk; |
| 1490 | |
| 1491 | if (hunk == chd_img->current_hunk[0]) |
| 1492 | buffer = 0; |
| 1493 | else if (hunk == chd_img->current_hunk[1]) |
| 1494 | buffer = 1; |
| 1495 | else |
| 1496 | { |
| 1497 | buffer = chd_img->current_buffer ^ 1; |
| 1498 | chd_read(chd_img->chd, hunk, chd_img->buffer + |
| 1499 | buffer * chd_img->header->hunkbytes); |
| 1500 | chd_img->current_hunk[buffer] = hunk; |
| 1501 | } |
| 1502 | |
| 1503 | memcpy(subbuffer, chd_get_sector(buffer, sector_in_hunk) + CD_FRAMESIZE_RAW, SUB_FRAMESIZE); |
| 1504 | return SUB_FRAMESIZE; |
| 1505 | } |
| 1506 | #endif |
| 1507 | |
| 1508 | static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector) |
| 1509 | { |
| 1510 | int ret; |
| 1511 | |
| 1512 | if (!f) |
| 1513 | return -1; |
| 1514 | fseeko(f, base + sector * 2048, SEEK_SET); |
| 1515 | ret = fread((char *)dest + 12 * 2, 1, 2048, f); |
| 1516 | |
| 1517 | // not really necessary, fake mode 2 header |
| 1518 | memset(cdbuffer, 0, 12 * 2); |
| 1519 | sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]); |
| 1520 | cdbuffer[12 + 3] = 1; |
| 1521 | |
| 1522 | return 12*2 + ret; |
| 1523 | } |
| 1524 | |
| 1525 | #if USE_READ_THREAD |
| 1526 | |
| 1527 | static int cdread_async(FILE *f, unsigned int base, void *dest, int sector) { |
| 1528 | boolean found = FALSE; |
| 1529 | int i = sector % SECTOR_BUFFER_SIZE; |
| 1530 | long ret; |
| 1531 | |
| 1532 | if (f != cdHandle || base != 0 || dest != cdbuffer) { |
| 1533 | // Async reads are only supported for cdbuffer, so call the sync |
| 1534 | // function directly. |
| 1535 | return sync_cdimg_read_func(f, base, dest, sector); |
| 1536 | } |
| 1537 | |
| 1538 | pthread_mutex_lock(&read_thread_msg_lock); |
| 1539 | |
| 1540 | // Only wait if we're not trying to read the next sector and |
| 1541 | // sector_start is set (meaning the last request hasn't been |
| 1542 | // processed yet) |
| 1543 | while(read_thread_sector_start != -1 && read_thread_sector_end + 1 != sector) { |
| 1544 | pthread_cond_wait(&read_thread_msg_done, &read_thread_msg_lock); |
| 1545 | } |
| 1546 | |
| 1547 | if (read_thread_sector_start == -1) |
| 1548 | read_thread_sector_start = sector; |
| 1549 | |
| 1550 | read_thread_sector_end = sector; |
| 1551 | pthread_cond_signal(&read_thread_msg_avail); |
| 1552 | pthread_mutex_unlock(&read_thread_msg_lock); |
| 1553 | |
| 1554 | do { |
| 1555 | pthread_mutex_lock(§orbuffer_lock); |
| 1556 | if (sectorbuffer[i].sector == sector) { |
| 1557 | sectorbuffer_index = i; |
| 1558 | ret = sectorbuffer[i].ret; |
| 1559 | found = TRUE; |
| 1560 | } |
| 1561 | |
| 1562 | if (!found) { |
| 1563 | pthread_cond_wait(§orbuffer_cond, §orbuffer_lock); |
| 1564 | } |
| 1565 | pthread_mutex_unlock(§orbuffer_lock); |
| 1566 | } while (!found); |
| 1567 | |
| 1568 | return ret; |
| 1569 | } |
| 1570 | |
| 1571 | #endif |
| 1572 | |
| 1573 | static unsigned char * CALLBACK ISOgetBuffer_compr(void) { |
| 1574 | return compr_img->buff_raw[compr_img->sector_in_blk] + 12; |
| 1575 | } |
| 1576 | |
| 1577 | #ifdef HAVE_CHD |
| 1578 | static unsigned char * CALLBACK ISOgetBuffer_chd(void) { |
| 1579 | return chd_get_sector(chd_img->current_buffer, chd_img->sector_in_hunk) + 12; |
| 1580 | } |
| 1581 | #endif |
| 1582 | |
| 1583 | #if USE_READ_THREAD |
| 1584 | static unsigned char * CALLBACK ISOgetBuffer_async(void) { |
| 1585 | unsigned char *buffer; |
| 1586 | pthread_mutex_lock(§orbuffer_lock); |
| 1587 | buffer = sectorbuffer[sectorbuffer_index].data; |
| 1588 | pthread_mutex_unlock(§orbuffer_lock); |
| 1589 | return buffer + 12; |
| 1590 | } |
| 1591 | #endif |
| 1592 | |
| 1593 | static unsigned char * CALLBACK ISOgetBuffer(void) { |
| 1594 | return cdbuffer + 12; |
| 1595 | } |
| 1596 | |
| 1597 | static void PrintTracks(void) { |
| 1598 | int i; |
| 1599 | |
| 1600 | for (i = 1; i <= numtracks; i++) { |
| 1601 | SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"), |
| 1602 | i, (ti[i].type == DATA ? "DATA" : "AUDIO"), |
| 1603 | ti[i].start[0], ti[i].start[1], ti[i].start[2], |
| 1604 | ti[i].length[0], ti[i].length[1], ti[i].length[2]); |
| 1605 | } |
| 1606 | } |
| 1607 | |
| 1608 | // This function is invoked by the front-end when opening an ISO |
| 1609 | // file for playback |
| 1610 | static long CALLBACK ISOopen(void) { |
| 1611 | boolean isMode1ISO = FALSE; |
| 1612 | char alt_bin_filename[MAXPATHLEN]; |
| 1613 | const char *bin_filename; |
| 1614 | char image_str[1024]; |
| 1615 | off_t size_main; |
| 1616 | |
| 1617 | if (cdHandle || chd_img) { |
| 1618 | return 0; // it's already open |
| 1619 | } |
| 1620 | |
| 1621 | cdHandle = fopen(GetIsoFile(), "rb"); |
| 1622 | if (cdHandle == NULL) { |
| 1623 | SysPrintf(_("Could't open '%s' for reading: %s\n"), |
| 1624 | GetIsoFile(), strerror(errno)); |
| 1625 | return -1; |
| 1626 | } |
| 1627 | size_main = get_size(cdHandle); |
| 1628 | |
| 1629 | snprintf(image_str, sizeof(image_str) - 6*4 - 1, |
| 1630 | "Loaded CD Image: %s", GetIsoFile()); |
| 1631 | |
| 1632 | cddaBigEndian = FALSE; |
| 1633 | subChanMixed = FALSE; |
| 1634 | subChanRaw = FALSE; |
| 1635 | pregapOffset = 0; |
| 1636 | cdrIsoMultidiskCount = 1; |
| 1637 | multifile = 0; |
| 1638 | |
| 1639 | CDR_getBuffer = ISOgetBuffer; |
| 1640 | cdimg_read_func = cdread_normal; |
| 1641 | cdimg_read_sub_func = NULL; |
| 1642 | |
| 1643 | if (parsetoc(GetIsoFile()) == 0) { |
| 1644 | strcat(image_str, "[+toc]"); |
| 1645 | } |
| 1646 | else if (parseccd(GetIsoFile()) == 0) { |
| 1647 | strcat(image_str, "[+ccd]"); |
| 1648 | } |
| 1649 | else if (parsemds(GetIsoFile()) == 0) { |
| 1650 | strcat(image_str, "[+mds]"); |
| 1651 | } |
| 1652 | else if (parsecue(GetIsoFile()) == 0) { |
| 1653 | strcat(image_str, "[+cue]"); |
| 1654 | } |
| 1655 | if (handlepbp(GetIsoFile()) == 0) { |
| 1656 | strcat(image_str, "[+pbp]"); |
| 1657 | CDR_getBuffer = ISOgetBuffer_compr; |
| 1658 | cdimg_read_func = cdread_compressed; |
| 1659 | } |
| 1660 | else if (handlecbin(GetIsoFile()) == 0) { |
| 1661 | strcat(image_str, "[+cbin]"); |
| 1662 | CDR_getBuffer = ISOgetBuffer_compr; |
| 1663 | cdimg_read_func = cdread_compressed; |
| 1664 | } |
| 1665 | #ifdef HAVE_CHD |
| 1666 | else if (handlechd(GetIsoFile()) == 0) { |
| 1667 | strcat(image_str, "[+chd]"); |
| 1668 | CDR_getBuffer = ISOgetBuffer_chd; |
| 1669 | cdimg_read_func = cdread_chd; |
| 1670 | cdimg_read_sub_func = cdread_sub_chd; |
| 1671 | fclose(cdHandle); |
| 1672 | cdHandle = NULL; |
| 1673 | } |
| 1674 | #endif |
| 1675 | |
| 1676 | if (!subChanMixed && opensubfile(GetIsoFile()) == 0) { |
| 1677 | strcat(image_str, "[+sub]"); |
| 1678 | } |
| 1679 | if (opensbifile(GetIsoFile()) == 0) { |
| 1680 | strcat(image_str, "[+sbi]"); |
| 1681 | } |
| 1682 | |
| 1683 | // maybe user selected metadata file instead of main .bin .. |
| 1684 | bin_filename = GetIsoFile(); |
| 1685 | if (cdHandle && size_main < 2352 * 0x10) { |
| 1686 | static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" }; |
| 1687 | FILE *tmpf = NULL; |
| 1688 | size_t i; |
| 1689 | char *p; |
| 1690 | |
| 1691 | strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename)); |
| 1692 | alt_bin_filename[MAXPATHLEN - 1] = '\0'; |
| 1693 | if (strlen(alt_bin_filename) >= 4) { |
| 1694 | p = alt_bin_filename + strlen(alt_bin_filename) - 4; |
| 1695 | for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) { |
| 1696 | strcpy(p, exts[i]); |
| 1697 | tmpf = fopen(alt_bin_filename, "rb"); |
| 1698 | if (tmpf != NULL) |
| 1699 | break; |
| 1700 | } |
| 1701 | } |
| 1702 | if (tmpf != NULL) { |
| 1703 | bin_filename = alt_bin_filename; |
| 1704 | fclose(cdHandle); |
| 1705 | cdHandle = tmpf; |
| 1706 | size_main = get_size(cdHandle); |
| 1707 | } |
| 1708 | } |
| 1709 | |
| 1710 | // guess whether it is mode1/2048 |
| 1711 | if (cdHandle && cdimg_read_func == cdread_normal && size_main % 2048 == 0) { |
| 1712 | unsigned int modeTest = 0; |
| 1713 | if (!fread(&modeTest, sizeof(modeTest), 1, cdHandle)) { |
| 1714 | SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__); |
| 1715 | } |
| 1716 | if (SWAP32(modeTest) != 0xffffff00) { |
| 1717 | strcat(image_str, "[2048]"); |
| 1718 | isMode1ISO = TRUE; |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | SysPrintf("%s.\n", image_str); |
| 1723 | |
| 1724 | PrintTracks(); |
| 1725 | |
| 1726 | if (subChanMixed && cdimg_read_func == cdread_normal) { |
| 1727 | cdimg_read_func = cdread_sub_mixed; |
| 1728 | cdimg_read_sub_func = cdread_sub_sub_mixed; |
| 1729 | } |
| 1730 | else if (isMode1ISO) { |
| 1731 | cdimg_read_func = cdread_2048; |
| 1732 | cdimg_read_sub_func = NULL; |
| 1733 | } |
| 1734 | |
| 1735 | if (Config.AsyncCD) { |
| 1736 | readThreadStart(); |
| 1737 | } |
| 1738 | return 0; |
| 1739 | } |
| 1740 | |
| 1741 | static long CALLBACK ISOclose(void) { |
| 1742 | int i; |
| 1743 | |
| 1744 | if (cdHandle != NULL) { |
| 1745 | fclose(cdHandle); |
| 1746 | cdHandle = NULL; |
| 1747 | } |
| 1748 | if (subHandle != NULL) { |
| 1749 | fclose(subHandle); |
| 1750 | subHandle = NULL; |
| 1751 | } |
| 1752 | playing = FALSE; |
| 1753 | cddaHandle = NULL; |
| 1754 | |
| 1755 | if (compr_img != NULL) { |
| 1756 | free(compr_img->index_table); |
| 1757 | free(compr_img); |
| 1758 | compr_img = NULL; |
| 1759 | } |
| 1760 | |
| 1761 | #ifdef HAVE_CHD |
| 1762 | if (chd_img != NULL) { |
| 1763 | chd_close(chd_img->chd); |
| 1764 | free(chd_img->buffer); |
| 1765 | free(chd_img); |
| 1766 | chd_img = NULL; |
| 1767 | } |
| 1768 | #endif |
| 1769 | |
| 1770 | for (i = 1; i <= numtracks; i++) { |
| 1771 | if (ti[i].handle != NULL) { |
| 1772 | fclose(ti[i].handle); |
| 1773 | ti[i].handle = NULL; |
| 1774 | } |
| 1775 | } |
| 1776 | numtracks = 0; |
| 1777 | ti[1].type = 0; |
| 1778 | UnloadSBI(); |
| 1779 | |
| 1780 | memset(cdbuffer, 0, sizeof(cdbuffer)); |
| 1781 | CDR_getBuffer = ISOgetBuffer; |
| 1782 | |
| 1783 | if (Config.AsyncCD) { |
| 1784 | readThreadStop(); |
| 1785 | } |
| 1786 | |
| 1787 | return 0; |
| 1788 | } |
| 1789 | |
| 1790 | static long CALLBACK ISOinit(void) { |
| 1791 | assert(cdHandle == NULL); |
| 1792 | assert(subHandle == NULL); |
| 1793 | |
| 1794 | return 0; // do nothing |
| 1795 | } |
| 1796 | |
| 1797 | static long CALLBACK ISOshutdown(void) { |
| 1798 | ISOclose(); |
| 1799 | return 0; |
| 1800 | } |
| 1801 | |
| 1802 | // return Starting and Ending Track |
| 1803 | // buffer: |
| 1804 | // byte 0 - start track |
| 1805 | // byte 1 - end track |
| 1806 | static long CALLBACK ISOgetTN(unsigned char *buffer) { |
| 1807 | buffer[0] = 1; |
| 1808 | |
| 1809 | if (numtracks > 0) { |
| 1810 | buffer[1] = numtracks; |
| 1811 | } |
| 1812 | else { |
| 1813 | buffer[1] = 1; |
| 1814 | } |
| 1815 | |
| 1816 | return 0; |
| 1817 | } |
| 1818 | |
| 1819 | // return Track Time |
| 1820 | // buffer: |
| 1821 | // byte 0 - frame |
| 1822 | // byte 1 - second |
| 1823 | // byte 2 - minute |
| 1824 | static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) { |
| 1825 | if (track == 0) { |
| 1826 | unsigned int sect; |
| 1827 | unsigned char time[3]; |
| 1828 | sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length); |
| 1829 | sec2msf(sect, (char *)time); |
| 1830 | buffer[2] = time[0]; |
| 1831 | buffer[1] = time[1]; |
| 1832 | buffer[0] = time[2]; |
| 1833 | } |
| 1834 | else if (numtracks > 0 && track <= numtracks) { |
| 1835 | buffer[2] = ti[track].start[0]; |
| 1836 | buffer[1] = ti[track].start[1]; |
| 1837 | buffer[0] = ti[track].start[2]; |
| 1838 | } |
| 1839 | else { |
| 1840 | buffer[2] = 0; |
| 1841 | buffer[1] = 2; |
| 1842 | buffer[0] = 0; |
| 1843 | } |
| 1844 | |
| 1845 | return 0; |
| 1846 | } |
| 1847 | |
| 1848 | // decode 'raw' subchannel data ripped by cdrdao |
| 1849 | static void DecodeRawSubData(void) { |
| 1850 | unsigned char subQData[12]; |
| 1851 | int i; |
| 1852 | |
| 1853 | memset(subQData, 0, sizeof(subQData)); |
| 1854 | |
| 1855 | for (i = 0; i < 8 * 12; i++) { |
| 1856 | if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed |
| 1857 | subQData[i >> 3] |= (1 << (7 - (i & 7))); |
| 1858 | } |
| 1859 | } |
| 1860 | |
| 1861 | memcpy(&subbuffer[12], subQData, 12); |
| 1862 | } |
| 1863 | |
| 1864 | // read track |
| 1865 | // time: byte 0 - minute; byte 1 - second; byte 2 - frame |
| 1866 | // uses bcd format |
| 1867 | static boolean CALLBACK ISOreadTrack(unsigned char *time) { |
| 1868 | int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])); |
| 1869 | long ret; |
| 1870 | |
| 1871 | if (!cdHandle && !chd_img) |
| 1872 | return 0; |
| 1873 | |
| 1874 | if (pregapOffset && sector >= pregapOffset) |
| 1875 | sector -= 2 * 75; |
| 1876 | |
| 1877 | ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector); |
| 1878 | if (ret < 12*2 + 2048) |
| 1879 | return 0; |
| 1880 | |
| 1881 | return 1; |
| 1882 | } |
| 1883 | |
| 1884 | // plays cdda audio |
| 1885 | // sector: byte 0 - minute; byte 1 - second; byte 2 - frame |
| 1886 | // does NOT uses bcd format |
| 1887 | static long CALLBACK ISOplay(unsigned char *time) { |
| 1888 | playing = TRUE; |
| 1889 | return 0; |
| 1890 | } |
| 1891 | |
| 1892 | // stops cdda audio |
| 1893 | static long CALLBACK ISOstop(void) { |
| 1894 | playing = FALSE; |
| 1895 | return 0; |
| 1896 | } |
| 1897 | |
| 1898 | // gets subchannel data |
| 1899 | static unsigned char* CALLBACK ISOgetBufferSub(int sector) { |
| 1900 | if (pregapOffset && sector >= pregapOffset) { |
| 1901 | sector -= 2 * 75; |
| 1902 | if (sector < pregapOffset) // ? |
| 1903 | return NULL; |
| 1904 | } |
| 1905 | |
| 1906 | if (cdimg_read_sub_func != NULL) { |
| 1907 | if (cdimg_read_sub_func(cdHandle, sector) != SUB_FRAMESIZE) |
| 1908 | return NULL; |
| 1909 | } |
| 1910 | else if (subHandle != NULL) { |
| 1911 | if (fseeko(subHandle, sector * SUB_FRAMESIZE, SEEK_SET)) |
| 1912 | return NULL; |
| 1913 | if (fread(subbuffer, 1, SUB_FRAMESIZE, subHandle) != SUB_FRAMESIZE) |
| 1914 | return NULL; |
| 1915 | } |
| 1916 | else { |
| 1917 | return NULL; |
| 1918 | } |
| 1919 | |
| 1920 | if (subChanRaw) DecodeRawSubData(); |
| 1921 | return subbuffer; |
| 1922 | } |
| 1923 | |
| 1924 | static long CALLBACK ISOgetStatus(struct CdrStat *stat) { |
| 1925 | u32 sect; |
| 1926 | |
| 1927 | CDR__getStatus(stat); |
| 1928 | |
| 1929 | if (playing) { |
| 1930 | stat->Type = 0x02; |
| 1931 | stat->Status |= 0x80; |
| 1932 | } |
| 1933 | else { |
| 1934 | // BIOS - boot ID (CD type) |
| 1935 | stat->Type = ti[1].type; |
| 1936 | } |
| 1937 | |
| 1938 | // relative -> absolute time |
| 1939 | sect = cddaCurPos; |
| 1940 | sec2msf(sect, (char *)stat->Time); |
| 1941 | |
| 1942 | return 0; |
| 1943 | } |
| 1944 | |
| 1945 | // read CDDA sector into buffer |
| 1946 | long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) { |
| 1947 | unsigned char msf[3] = {m, s, f}; |
| 1948 | unsigned int track, track_start = 0; |
| 1949 | FILE *handle = cdHandle; |
| 1950 | int ret; |
| 1951 | |
| 1952 | cddaCurPos = msf2sec((char *)msf); |
| 1953 | |
| 1954 | // find current track index |
| 1955 | for (track = numtracks; ; track--) { |
| 1956 | track_start = msf2sec(ti[track].start); |
| 1957 | if (track_start <= cddaCurPos) |
| 1958 | break; |
| 1959 | if (track == 1) |
| 1960 | break; |
| 1961 | } |
| 1962 | |
| 1963 | // data tracks play silent |
| 1964 | if (ti[track].type != CDDA) { |
| 1965 | memset(buffer, 0, CD_FRAMESIZE_RAW); |
| 1966 | return 0; |
| 1967 | } |
| 1968 | |
| 1969 | if (multifile) { |
| 1970 | // find the file that contains this track |
| 1971 | unsigned int file; |
| 1972 | for (file = track; file > 1; file--) { |
| 1973 | if (ti[file].handle != NULL) { |
| 1974 | handle = ti[file].handle; |
| 1975 | break; |
| 1976 | } |
| 1977 | } |
| 1978 | } |
| 1979 | if (!handle && !chd_img) { |
| 1980 | memset(buffer, 0, CD_FRAMESIZE_RAW); |
| 1981 | return -1; |
| 1982 | } |
| 1983 | |
| 1984 | ret = cdimg_read_func(handle, ti[track].start_offset, |
| 1985 | buffer, cddaCurPos - track_start); |
| 1986 | if (ret != CD_FRAMESIZE_RAW) { |
| 1987 | memset(buffer, 0, CD_FRAMESIZE_RAW); |
| 1988 | return -1; |
| 1989 | } |
| 1990 | |
| 1991 | if (cddaBigEndian) { |
| 1992 | int i; |
| 1993 | unsigned char tmp; |
| 1994 | |
| 1995 | for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) { |
| 1996 | tmp = buffer[i * 2]; |
| 1997 | buffer[i * 2] = buffer[i * 2 + 1]; |
| 1998 | buffer[i * 2 + 1] = tmp; |
| 1999 | } |
| 2000 | } |
| 2001 | |
| 2002 | return 0; |
| 2003 | } |
| 2004 | |
| 2005 | void cdrIsoInit(void) { |
| 2006 | CDR_init = ISOinit; |
| 2007 | CDR_shutdown = ISOshutdown; |
| 2008 | CDR_open = ISOopen; |
| 2009 | CDR_close = ISOclose; |
| 2010 | CDR_getTN = ISOgetTN; |
| 2011 | CDR_getTD = ISOgetTD; |
| 2012 | CDR_readTrack = ISOreadTrack; |
| 2013 | CDR_getBuffer = ISOgetBuffer; |
| 2014 | CDR_play = ISOplay; |
| 2015 | CDR_stop = ISOstop; |
| 2016 | CDR_getBufferSub = ISOgetBufferSub; |
| 2017 | CDR_getStatus = ISOgetStatus; |
| 2018 | CDR_readCDDA = ISOreadCDDA; |
| 2019 | |
| 2020 | CDR_getDriveLetter = CDR__getDriveLetter; |
| 2021 | CDR_configure = CDR__configure; |
| 2022 | CDR_test = CDR__test; |
| 2023 | CDR_about = CDR__about; |
| 2024 | CDR_setfilename = CDR__setfilename; |
| 2025 | |
| 2026 | numtracks = 0; |
| 2027 | } |
| 2028 | |
| 2029 | int cdrIsoActive(void) { |
| 2030 | return (cdHandle || chd_img); |
| 2031 | } |