notaz.gp2x.de / pcsx_rearmed.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
fix build
[pcsx_rearmed.git] / libpcsxcore / cdriso.c
... / ...
CommitLineData
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#ifdef _WIN32
29#define strcasecmp _stricmp
30#else
31#include <sys/types.h>
32#include <sys/stat.h>
33#include <unistd.h>
34#if P_HAVE_PTHREAD
35#include <pthread.h>
36#include <sys/time.h>
37#endif
38#endif
39#include <errno.h>
40#include <zlib.h>
41
42#ifdef HAVE_CHD
43#include "libchdr/chd.h"
44#endif
45
46#define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1))
47
48unsigned int cdrIsoMultidiskCount;
49unsigned int cdrIsoMultidiskSelect;
50
51static FILE *cdHandle = NULL;
52static FILE *cddaHandle = NULL;
53static FILE *subHandle = NULL;
54
55static boolean subChanMixed = FALSE;
56static boolean subChanRaw = FALSE;
57
58static boolean multifile = FALSE;
59
60static unsigned char cdbuffer[CD_FRAMESIZE_RAW];
61static unsigned char subbuffer[SUB_FRAMESIZE];
62
63static boolean playing = FALSE;
64static boolean cddaBigEndian = FALSE;
65/* Frame offset into CD image where pregap data would be found if it was there.
66 * If a game seeks there we must *not* return subchannel data since it's
67 * not in the CD image, so that cdrom code can fake subchannel data instead.
68 * XXX: there could be multiple pregaps but PSX dumps only have one? */
69static unsigned int pregapOffset;
70
71static unsigned int cddaCurPos;
72
73// compressed image stuff
74static struct {
75 unsigned char buff_raw[16][CD_FRAMESIZE_RAW];
76 unsigned char buff_compressed[CD_FRAMESIZE_RAW * 16 + 100];
77 off_t *index_table;
78 unsigned int index_len;
79 unsigned int block_shift;
80 unsigned int current_block;
81 unsigned int sector_in_blk;
82} *compr_img;
83
84#ifdef HAVE_CHD
85static struct {
86 unsigned char *buffer;
87 chd_file* chd;
88 const chd_header* header;
89 unsigned int sectors_per_hunk;
90 unsigned int current_hunk[2];
91 unsigned int current_buffer;
92 unsigned int sector_in_hunk;
93} *chd_img;
94#else
95#define chd_img 0
96#endif
97
98static int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
99static int (*cdimg_read_sub_func)(FILE *f, int sector);
100
101char* CALLBACK CDR__getDriveLetter(void);
102long CALLBACK CDR__configure(void);
103long CALLBACK CDR__test(void);
104void CALLBACK CDR__about(void);
105long CALLBACK CDR__setfilename(char *filename);
106long CALLBACK CDR__getStatus(struct CdrStat *stat);
107
108static void DecodeRawSubData(void);
109
110struct trackinfo {
111 enum {DATA=1, CDDA} type;
112 char start[3]; // MSF-format
113 char length[3]; // MSF-format
114 FILE *handle; // for multi-track images CDDA
115 unsigned int start_offset; // byte offset from start of above file (chd: sector offset)
116};
117
118#define MAXTRACKS 100 /* How many tracks can a CD hold? */
119
120static int numtracks = 0;
121static struct trackinfo ti[MAXTRACKS];
122
123// get a sector from a msf-array
124static unsigned int msf2sec(char *msf) {
125 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
126}
127
128static void sec2msf(unsigned int s, char *msf) {
129 msf[0] = s / 75 / 60;
130 s = s - msf[0] * 75 * 60;
131 msf[1] = s / 75;
132 s = s - msf[1] * 75;
133 msf[2] = s;
134}
135
136// divide a string of xx:yy:zz into m, s, f
137static void tok2msf(char *time, char *msf) {
138 char *token;
139
140 token = strtok(time, ":");
141 if (token) {
142 msf[0] = atoi(token);
143 }
144 else {
145 msf[0] = 0;
146 }
147
148 token = strtok(NULL, ":");
149 if (token) {
150 msf[1] = atoi(token);
151 }
152 else {
153 msf[1] = 0;
154 }
155
156 token = strtok(NULL, ":");
157 if (token) {
158 msf[2] = atoi(token);
159 }
160 else {
161 msf[2] = 0;
162 }
163}
164
165static off_t get_size(FILE *f)
166{
167 off_t old, size;
168#if !defined(USE_LIBRETRO_VFS)
169 struct stat st;
170 if (fstat(fileno(f), &st) == 0)
171 return st.st_size;
172#endif
173 old = ftello(f);
174 fseeko(f, 0, SEEK_END);
175 size = ftello(f);
176 fseeko(f, old, SEEK_SET);
177 return size;
178}
179
180// this function tries to get the .toc file of the given .bin
181// the necessary data is put into the ti (trackinformation)-array
182static int parsetoc(const char *isofile) {
183 char tocname[MAXPATHLEN];
184 FILE *fi;
185 char linebuf[256], tmp[256], name[256];
186 char *token;
187 char time[20], time2[20];
188 unsigned int t, sector_offs, sector_size;
189 unsigned int current_zero_gap = 0;
190
191 numtracks = 0;
192
193 // copy name of the iso and change extension from .bin to .toc
194 strncpy(tocname, isofile, sizeof(tocname));
195 tocname[MAXPATHLEN - 1] = '\0';
196 if (strlen(tocname) >= 4) {
197 strcpy(tocname + strlen(tocname) - 4, ".toc");
198 }
199 else {
200 return -1;
201 }
202
203 if ((fi = fopen(tocname, "r")) == NULL) {
204 // try changing extension to .cue (to satisfy some stupid tutorials)
205 strcpy(tocname + strlen(tocname) - 4, ".cue");
206 if ((fi = fopen(tocname, "r")) == NULL) {
207 // if filename is image.toc.bin, try removing .bin (for Brasero)
208 strcpy(tocname, isofile);
209 t = strlen(tocname);
210 if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) {
211 tocname[t - 4] = '\0';
212 if ((fi = fopen(tocname, "r")) == NULL) {
213 return -1;
214 }
215 }
216 else {
217 return -1;
218 }
219 }
220 // check if it's really a TOC named as a .cue
221 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
222 token = strtok(linebuf, " ");
223 if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) {
224 fclose(fi);
225 return -1;
226 }
227 }
228 fseek(fi, 0, SEEK_SET);
229 }
230
231 memset(&ti, 0, sizeof(ti));
232 cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio
233
234 sector_size = CD_FRAMESIZE_RAW;
235 sector_offs = 2 * 75;
236
237 // parse the .toc file
238 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
239 // search for tracks
240 strncpy(tmp, linebuf, sizeof(linebuf));
241 token = strtok(tmp, " ");
242
243 if (token == NULL) continue;
244
245 if (!strcmp(token, "TRACK")) {
246 sector_offs += current_zero_gap;
247 current_zero_gap = 0;
248
249 // get type of track
250 token = strtok(NULL, " ");
251 numtracks++;
252
253 if (!strncmp(token, "MODE2_RAW", 9)) {
254 ti[numtracks].type = DATA;
255 sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0
256
257 // check if this image contains mixed subchannel data
258 token = strtok(NULL, " ");
259 if (token != NULL && !strncmp(token, "RW", 2)) {
260 sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE;
261 subChanMixed = TRUE;
262 if (!strncmp(token, "RW_RAW", 6))
263 subChanRaw = TRUE;
264 }
265 }
266 else if (!strncmp(token, "AUDIO", 5)) {
267 ti[numtracks].type = CDDA;
268 }
269 }
270 else if (!strcmp(token, "DATAFILE")) {
271 if (ti[numtracks].type == CDDA) {
272 sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2);
273 ti[numtracks].start_offset = t;
274 t = t / sector_size + sector_offs;
275 sec2msf(t, (char *)&ti[numtracks].start);
276 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
277 }
278 else {
279 sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time);
280 tok2msf((char *)&time, (char *)&ti[numtracks].length);
281 }
282 }
283 else if (!strcmp(token, "FILE")) {
284 sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2);
285 tok2msf((char *)&time, (char *)&ti[numtracks].start);
286 t += msf2sec(ti[numtracks].start) * sector_size;
287 ti[numtracks].start_offset = t;
288 t = t / sector_size + sector_offs;
289 sec2msf(t, (char *)&ti[numtracks].start);
290 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
291 }
292 else if (!strcmp(token, "ZERO") || !strcmp(token, "SILENCE")) {
293 // skip unneeded optional fields
294 while (token != NULL) {
295 token = strtok(NULL, " ");
296 if (strchr(token, ':') != NULL)
297 break;
298 }
299 if (token != NULL) {
300 tok2msf(token, tmp);
301 current_zero_gap = msf2sec(tmp);
302 }
303 if (numtracks > 1) {
304 t = ti[numtracks - 1].start_offset;
305 t /= sector_size;
306 pregapOffset = t + msf2sec(ti[numtracks - 1].length);
307 }
308 }
309 else if (!strcmp(token, "START")) {
310 token = strtok(NULL, " ");
311 if (token != NULL && strchr(token, ':')) {
312 tok2msf(token, tmp);
313 t = msf2sec(tmp);
314 ti[numtracks].start_offset += (t - current_zero_gap) * sector_size;
315 t = msf2sec(ti[numtracks].start) + t;
316 sec2msf(t, (char *)&ti[numtracks].start);
317 }
318 }
319 }
320
321 fclose(fi);
322
323 return 0;
324}
325
326// this function tries to get the .cue file of the given .bin
327// the necessary data is put into the ti (trackinformation)-array
328static int parsecue(const char *isofile) {
329 char cuename[MAXPATHLEN];
330 char filepath[MAXPATHLEN];
331 char *incue_fname;
332 FILE *fi;
333 FILE *ftmp = NULL;
334 char *token;
335 char time[20];
336 char *tmp;
337 char linebuf[256], tmpb[256], dummy[256];
338 unsigned int incue_max_len;
339 unsigned int t, file_len, mode, sector_offs;
340 unsigned int sector_size = 2352;
341
342 numtracks = 0;
343
344 // copy name of the iso and change extension from .bin to .cue
345 strncpy(cuename, isofile, sizeof(cuename));
346 cuename[MAXPATHLEN - 1] = '\0';
347 if (strlen(cuename) < 4)
348 return -1;
349 if (strcasecmp(cuename + strlen(cuename) - 4, ".cue") == 0) {
350 // it's already open as cdHandle
351 fi = cdHandle;
352 }
353 else {
354 // If 'isofile' is a '.cd<X>' file, use it as a .cue file
355 // and don't try to search the additional .cue file
356 if (strncasecmp(cuename + strlen(cuename) - 4, ".cd", 3) != 0 )
357 strcpy(cuename + strlen(cuename) - 4, ".cue");
358
359 if ((ftmp = fopen(cuename, "r")) == NULL)
360 return -1;
361 fi = ftmp;
362 }
363
364 // Some stupid tutorials wrongly tell users to use cdrdao to rip a
365 // "bin/cue" image, which is in fact a "bin/toc" image. So let's check
366 // that...
367 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
368 if (!strncmp(linebuf, "CD_ROM_XA", 9)) {
369 // Don't proceed further, as this is actually a .toc file rather
370 // than a .cue file.
371 if (ftmp)
372 fclose(ftmp);
373 return parsetoc(isofile);
374 }
375 rewind(fi);
376 }
377
378 // build a path for files referenced in .cue
379 strncpy(filepath, cuename, sizeof(filepath));
380 tmp = strrchr(filepath, '/');
381 if (tmp == NULL)
382 tmp = strrchr(filepath, '\\');
383 if (tmp != NULL)
384 tmp++;
385 else
386 tmp = filepath;
387 *tmp = 0;
388 filepath[sizeof(filepath) - 1] = 0;
389 incue_fname = tmp;
390 incue_max_len = sizeof(filepath) - (tmp - filepath) - 1;
391
392 memset(&ti, 0, sizeof(ti));
393
394 file_len = 0;
395 sector_offs = 2 * 75;
396
397 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
398 strncpy(dummy, linebuf, sizeof(linebuf));
399 token = strtok(dummy, " ");
400
401 if (token == NULL) {
402 continue;
403 }
404
405 if (!strcmp(token, "TRACK")) {
406 numtracks++;
407
408 sector_size = 0;
409 if (strstr(linebuf, "AUDIO") != NULL) {
410 ti[numtracks].type = CDDA;
411 sector_size = 2352;
412 }
413 else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, &sector_size) == 3)
414 ti[numtracks].type = DATA;
415 else {
416 SysPrintf(".cue: failed to parse TRACK\n");
417 ti[numtracks].type = numtracks == 1 ? DATA : CDDA;
418 }
419 if (sector_size == 0)
420 sector_size = 2352;
421 }
422 else if (!strcmp(token, "INDEX")) {
423 if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2)
424 SysPrintf(".cue: failed to parse INDEX\n");
425 tok2msf(time, (char *)&ti[numtracks].start);
426
427 t = msf2sec(ti[numtracks].start);
428 ti[numtracks].start_offset = t * sector_size;
429 t += sector_offs;
430 sec2msf(t, ti[numtracks].start);
431
432 // default track length to file length
433 t = file_len - ti[numtracks].start_offset / sector_size;
434 sec2msf(t, ti[numtracks].length);
435
436 if (numtracks > 1 && ti[numtracks].handle == NULL) {
437 // this track uses the same file as the last,
438 // start of this track is last track's end
439 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
440 sec2msf(t, ti[numtracks - 1].length);
441 }
442 if (numtracks > 1 && pregapOffset == -1)
443 pregapOffset = ti[numtracks].start_offset / sector_size;
444 }
445 else if (!strcmp(token, "PREGAP")) {
446 if (sscanf(linebuf, " PREGAP %8s", time) == 1) {
447 tok2msf(time, dummy);
448 sector_offs += msf2sec(dummy);
449 }
450 pregapOffset = -1; // mark to fill track start_offset
451 }
452 else if (!strcmp(token, "FILE")) {
453 t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb);
454 if (t != 1)
455 sscanf(linebuf, " FILE %255s", tmpb);
456
457 // absolute path?
458 ti[numtracks + 1].handle = fopen(tmpb, "rb");
459 if (ti[numtracks + 1].handle == NULL) {
460 // relative to .cue?
461 tmp = strrchr(tmpb, '\\');
462 if (tmp == NULL)
463 tmp = strrchr(tmpb, '/');
464 if (tmp != NULL)
465 tmp++;
466 else
467 tmp = tmpb;
468 strncpy(incue_fname, tmp, incue_max_len);
469 ti[numtracks + 1].handle = fopen(filepath, "rb");
470 }
471
472 // update global offset if this is not first file in this .cue
473 if (numtracks + 1 > 1) {
474 multifile = 1;
475 sector_offs += file_len;
476 }
477
478 file_len = 0;
479 if (ti[numtracks + 1].handle == NULL) {
480 SysPrintf(_("\ncould not open: %s\n"), filepath);
481 continue;
482 }
483 file_len = get_size(ti[numtracks + 1].handle) / 2352;
484 }
485 }
486
487 if (ftmp)
488 fclose(ftmp);
489
490 // if there are no tracks detected, then it's not a cue file
491 if (!numtracks)
492 return -1;
493
494 // the data track handle is always in cdHandle
495 if (ti[1].handle) {
496 fclose(cdHandle);
497 cdHandle = ti[1].handle;
498 ti[1].handle = NULL;
499 }
500 return 0;
501}
502
503// this function tries to get the .ccd file of the given .img
504// the necessary data is put into the ti (trackinformation)-array
505static int parseccd(const char *isofile) {
506 char ccdname[MAXPATHLEN];
507 FILE *fi;
508 char linebuf[256];
509 unsigned int t;
510
511 numtracks = 0;
512
513 // copy name of the iso and change extension from .img to .ccd
514 strncpy(ccdname, isofile, sizeof(ccdname));
515 ccdname[MAXPATHLEN - 1] = '\0';
516 if (strlen(ccdname) >= 4) {
517 strcpy(ccdname + strlen(ccdname) - 4, ".ccd");
518 }
519 else {
520 return -1;
521 }
522
523 if ((fi = fopen(ccdname, "r")) == NULL) {
524 return -1;
525 }
526
527 memset(&ti, 0, sizeof(ti));
528
529 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
530 if (!strncmp(linebuf, "[TRACK", 6)){
531 numtracks++;
532 }
533 else if (!strncmp(linebuf, "MODE=", 5)) {
534 sscanf(linebuf, "MODE=%d", &t);
535 ti[numtracks].type = ((t == 0) ? CDDA : DATA);
536 }
537 else if (!strncmp(linebuf, "INDEX 1=", 8)) {
538 sscanf(linebuf, "INDEX 1=%d", &t);
539 sec2msf(t + 2 * 75, ti[numtracks].start);
540 ti[numtracks].start_offset = t * 2352;
541
542 // If we've already seen another track, this is its end
543 if (numtracks > 1) {
544 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
545 sec2msf(t, ti[numtracks - 1].length);
546 }
547 }
548 }
549
550 fclose(fi);
551
552 // Fill out the last track's end based on size
553 if (numtracks >= 1) {
554 t = get_size(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75;
555 sec2msf(t, ti[numtracks].length);
556 }
557
558 return 0;
559}
560
561// this function tries to get the .mds file of the given .mdf
562// the necessary data is put into the ti (trackinformation)-array
563static int parsemds(const char *isofile) {
564 char mdsname[MAXPATHLEN];
565 FILE *fi;
566 unsigned int offset, extra_offset, l, i;
567 unsigned short s;
568
569 numtracks = 0;
570
571 // copy name of the iso and change extension from .mdf to .mds
572 strncpy(mdsname, isofile, sizeof(mdsname));
573 mdsname[MAXPATHLEN - 1] = '\0';
574 if (strlen(mdsname) >= 4) {
575 strcpy(mdsname + strlen(mdsname) - 4, ".mds");
576 }
577 else {
578 return -1;
579 }
580
581 if ((fi = fopen(mdsname, "rb")) == NULL) {
582 return -1;
583 }
584
585 memset(&ti, 0, sizeof(ti));
586
587 // check if it's a valid mds file
588 if (fread(&i, 1, sizeof(i), fi) != sizeof(i))
589 goto fail_io;
590 i = SWAP32(i);
591 if (i != 0x4944454D) {
592 // not an valid mds file
593 fclose(fi);
594 return -1;
595 }
596
597 // get offset to session block
598 fseek(fi, 0x50, SEEK_SET);
599 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
600 goto fail_io;
601 offset = SWAP32(offset);
602
603 // get total number of tracks
604 offset += 14;
605 fseek(fi, offset, SEEK_SET);
606 if (fread(&s, 1, sizeof(s), fi) != sizeof(s))
607 goto fail_io;
608 s = SWAP16(s);
609 numtracks = s;
610
611 // get offset to track blocks
612 fseek(fi, 4, SEEK_CUR);
613 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
614 goto fail_io;
615 offset = SWAP32(offset);
616
617 // skip lead-in data
618 while (1) {
619 fseek(fi, offset + 4, SEEK_SET);
620 if (fgetc(fi) < 0xA0) {
621 break;
622 }
623 offset += 0x50;
624 }
625
626 // check if the image contains mixed subchannel data
627 fseek(fi, offset + 1, SEEK_SET);
628 subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE);
629
630 // read track data
631 for (i = 1; i <= numtracks; i++) {
632 fseek(fi, offset, SEEK_SET);
633
634 // get the track type
635 ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA);
636 fseek(fi, 8, SEEK_CUR);
637
638 // get the track starting point
639 ti[i].start[0] = fgetc(fi);
640 ti[i].start[1] = fgetc(fi);
641 ti[i].start[2] = fgetc(fi);
642
643 if (fread(&extra_offset, 1, sizeof(extra_offset), fi) != sizeof(extra_offset))
644 goto fail_io;
645 extra_offset = SWAP32(extra_offset);
646
647 // get track start offset (in .mdf)
648 fseek(fi, offset + 0x28, SEEK_SET);
649 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
650 goto fail_io;
651 l = SWAP32(l);
652 ti[i].start_offset = l;
653
654 // get pregap
655 fseek(fi, extra_offset, SEEK_SET);
656 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
657 goto fail_io;
658 l = SWAP32(l);
659 if (l != 0 && i > 1)
660 pregapOffset = msf2sec(ti[i].start);
661
662 // get the track length
663 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
664 goto fail_io;
665 l = SWAP32(l);
666 sec2msf(l, ti[i].length);
667
668 offset += 0x50;
669 }
670 fclose(fi);
671 return 0;
672fail_io:
673#ifndef NDEBUG
674 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
675#endif
676 fclose(fi);
677 return -1;
678}
679
680static int handlepbp(const char *isofile) {
681 struct {
682 unsigned int sig;
683 unsigned int dontcare[8];
684 unsigned int psar_offs;
685 } pbp_hdr;
686 struct {
687 unsigned char type;
688 unsigned char pad0;
689 unsigned char track;
690 char index0[3];
691 char pad1;
692 char index1[3];
693 } toc_entry;
694 struct {
695 unsigned int offset;
696 unsigned int size;
697 unsigned int dontcare[6];
698 } index_entry;
699 char psar_sig[11];
700 off_t psisoimg_offs, cdimg_base;
701 unsigned int t, cd_length;
702 unsigned int offsettab[8];
703 unsigned int psar_offs, index_entry_size, index_entry_offset;
704 const char *ext = NULL;
705 int i, ret;
706
707 if (strlen(isofile) >= 4)
708 ext = isofile + strlen(isofile) - 4;
709 if (ext == NULL || strcasecmp(ext, ".pbp") != 0)
710 return -1;
711
712 numtracks = 0;
713
714 ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle);
715 if (ret != sizeof(pbp_hdr)) {
716 SysPrintf("failed to read pbp\n");
717 goto fail_io;
718 }
719
720 psar_offs = SWAP32(pbp_hdr.psar_offs);
721
722 ret = fseeko(cdHandle, psar_offs, SEEK_SET);
723 if (ret != 0) {
724 SysPrintf("failed to seek to %x\n", psar_offs);
725 goto fail_io;
726 }
727
728 psisoimg_offs = psar_offs;
729 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
730 goto fail_io;
731 psar_sig[10] = 0;
732 if (strcmp(psar_sig, "PSTITLEIMG") == 0) {
733 // multidisk image?
734 ret = fseeko(cdHandle, psar_offs + 0x200, SEEK_SET);
735 if (ret != 0) {
736 SysPrintf("failed to seek to %x\n", psar_offs + 0x200);
737 goto fail_io;
738 }
739
740 if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) {
741 SysPrintf("failed to read offsettab\n");
742 goto fail_io;
743 }
744
745 for (i = 0; i < sizeof(offsettab) / sizeof(offsettab[0]); i++) {
746 if (offsettab[i] == 0)
747 break;
748 }
749 cdrIsoMultidiskCount = i;
750 if (cdrIsoMultidiskCount == 0) {
751 SysPrintf("multidisk eboot has 0 images?\n");
752 goto fail_io;
753 }
754
755 if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount)
756 cdrIsoMultidiskSelect = 0;
757
758 psisoimg_offs += SWAP32(offsettab[cdrIsoMultidiskSelect]);
759
760 ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET);
761 if (ret != 0) {
762 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs);
763 goto fail_io;
764 }
765
766 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
767 goto fail_io;
768 psar_sig[10] = 0;
769 }
770
771 if (strcmp(psar_sig, "PSISOIMG00") != 0) {
772 SysPrintf("bad psar_sig: %s\n", psar_sig);
773 goto fail_io;
774 }
775
776 // seek to TOC
777 ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET);
778 if (ret != 0) {
779 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800);
780 goto fail_io;
781 }
782
783 // first 3 entries are special
784 fseek(cdHandle, sizeof(toc_entry), SEEK_CUR);
785 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
786 goto fail_io;
787 numtracks = btoi(toc_entry.index1[0]);
788
789 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
790 goto fail_io;
791 cd_length = btoi(toc_entry.index1[0]) * 60 * 75 +
792 btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]);
793
794 for (i = 1; i <= numtracks; i++) {
795 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
796 goto fail_io;
797
798 ti[i].type = (toc_entry.type == 1) ? CDDA : DATA;
799
800 ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 +
801 btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]);
802 ti[i].start_offset *= 2352;
803 ti[i].start[0] = btoi(toc_entry.index1[0]);
804 ti[i].start[1] = btoi(toc_entry.index1[1]);
805 ti[i].start[2] = btoi(toc_entry.index1[2]);
806
807 if (i > 1) {
808 t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start);
809 sec2msf(t, ti[i - 1].length);
810 }
811 }
812 t = cd_length - ti[numtracks].start_offset / 2352;
813 sec2msf(t, ti[numtracks].length);
814
815 // seek to ISO index
816 ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET);
817 if (ret != 0) {
818 SysPrintf("failed to seek to ISO index\n");
819 goto fail_io;
820 }
821
822 compr_img = calloc(1, sizeof(*compr_img));
823 if (compr_img == NULL)
824 goto fail_io;
825
826 compr_img->block_shift = 4;
827 compr_img->current_block = (unsigned int)-1;
828
829 compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry);
830 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
831 if (compr_img->index_table == NULL)
832 goto fail_io;
833
834 cdimg_base = psisoimg_offs + 0x100000;
835 for (i = 0; i < compr_img->index_len; i++) {
836 ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle);
837 if (ret != sizeof(index_entry)) {
838 SysPrintf("failed to read index_entry #%d\n", i);
839 goto fail_index;
840 }
841
842 index_entry_size = SWAP32(index_entry.size);
843 index_entry_offset = SWAP32(index_entry.offset);
844
845 if (index_entry_size == 0)
846 break;
847
848 compr_img->index_table[i] = cdimg_base + index_entry_offset;
849 }
850 compr_img->index_table[i] = cdimg_base + index_entry_offset + index_entry_size;
851
852 return 0;
853
854fail_index:
855 free(compr_img->index_table);
856 compr_img->index_table = NULL;
857 goto done;
858
859fail_io:
860 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
861 rewind(cdHandle);
862
863done:
864 if (compr_img != NULL) {
865 free(compr_img);
866 compr_img = NULL;
867 }
868 return -1;
869}
870
871static int handlecbin(const char *isofile) {
872 struct
873 {
874 char magic[4];
875 unsigned int header_size;
876 unsigned long long total_bytes;
877 unsigned int block_size;
878 unsigned char ver; // 1
879 unsigned char align;
880 unsigned char rsv_06[2];
881 } ciso_hdr;
882 const char *ext = NULL;
883 unsigned int *index_table = NULL;
884 unsigned int index = 0, plain;
885 int i, ret;
886
887 if (strlen(isofile) >= 5)
888 ext = isofile + strlen(isofile) - 5;
889 if (ext == NULL || (strcasecmp(ext + 1, ".cbn") != 0 && strcasecmp(ext, ".cbin") != 0))
890 return -1;
891
892 ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle);
893 if (ret != sizeof(ciso_hdr)) {
894 SysPrintf("failed to read ciso header\n");
895 goto fail_io;
896 }
897
898 if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) {
899 SysPrintf("bad ciso header\n");
900 goto fail_io;
901 }
902 if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) {
903 ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET);
904 if (ret != 0) {
905 SysPrintf("failed to seek to %x\n", ciso_hdr.header_size);
906 goto fail_io;
907 }
908 }
909
910 compr_img = calloc(1, sizeof(*compr_img));
911 if (compr_img == NULL)
912 goto fail_io;
913
914 compr_img->block_shift = 0;
915 compr_img->current_block = (unsigned int)-1;
916
917 compr_img->index_len = ciso_hdr.total_bytes / ciso_hdr.block_size;
918 index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0]));
919 if (index_table == NULL)
920 goto fail_io;
921
922 ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle);
923 if (ret != compr_img->index_len) {
924 SysPrintf("failed to read index table\n");
925 goto fail_index;
926 }
927
928 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
929 if (compr_img->index_table == NULL)
930 goto fail_index;
931
932 for (i = 0; i < compr_img->index_len + 1; i++) {
933 index = index_table[i];
934 plain = index & 0x80000000;
935 index &= 0x7fffffff;
936 compr_img->index_table[i] = (off_t)index << ciso_hdr.align;
937 if (plain)
938 compr_img->index_table[i] |= OFF_T_MSB;
939 }
940
941 return 0;
942
943fail_index:
944 free(index_table);
945fail_io:
946 if (compr_img != NULL) {
947 free(compr_img);
948 compr_img = NULL;
949 }
950 rewind(cdHandle);
951 return -1;
952}
953
954#ifdef HAVE_CHD
955static int handlechd(const char *isofile) {
956 int frame_offset = 150;
957 int file_offset = 0;
958
959 chd_img = calloc(1, sizeof(*chd_img));
960 if (chd_img == NULL)
961 goto fail_io;
962
963 if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE)
964 goto fail_io;
965
966 if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE))
967 goto fail_io;
968
969 chd_img->header = chd_get_header(chd_img->chd);
970
971 chd_img->buffer = malloc(chd_img->header->hunkbytes * 2);
972 if (chd_img->buffer == NULL)
973 goto fail_io;
974
975 chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE);
976 chd_img->current_hunk[0] = (unsigned int)-1;
977 chd_img->current_hunk[1] = (unsigned int)-1;
978
979 cddaBigEndian = TRUE;
980
981 numtracks = 0;
982 memset(ti, 0, sizeof(ti));
983
984 while (1)
985 {
986 struct {
987 char type[64];
988 char subtype[32];
989 char pgtype[32];
990 char pgsub[32];
991 uint32_t track;
992 uint32_t frames;
993 uint32_t pregap;
994 uint32_t postgap;
995 } md = {};
996 char meta[256];
997 uint32_t meta_size = 0;
998
999 if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
1000 sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap);
1001 else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
1002 sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames);
1003 else
1004 break;
1005
1006 SysPrintf("chd: %s\n", meta);
1007
1008 if (md.track == 1) {
1009 if (!strncmp(md.subtype, "RW", 2)) {
1010 subChanMixed = TRUE;
1011 if (!strcmp(md.subtype, "RW_RAW"))
1012 subChanRaw = TRUE;
1013 }
1014 }
1015
1016 ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA;
1017
1018 sec2msf(frame_offset + md.pregap, ti[md.track].start);
1019 sec2msf(md.frames, ti[md.track].length);
1020
1021 ti[md.track].start_offset = file_offset + md.pregap;
1022
1023 // XXX: what about postgap?
1024 frame_offset += md.frames;
1025 file_offset += md.frames;
1026 numtracks++;
1027 }
1028
1029 if (numtracks)
1030 return 0;
1031
1032fail_io:
1033 if (chd_img != NULL) {
1034 free(chd_img->buffer);
1035 free(chd_img);
1036 chd_img = NULL;
1037 }
1038 return -1;
1039}
1040#endif
1041
1042// this function tries to get the .sub file of the given .img
1043static int opensubfile(const char *isoname) {
1044 char subname[MAXPATHLEN];
1045
1046 // copy name of the iso and change extension from .img to .sub
1047 strncpy(subname, isoname, sizeof(subname));
1048 subname[MAXPATHLEN - 1] = '\0';
1049 if (strlen(subname) >= 4) {
1050 strcpy(subname + strlen(subname) - 4, ".sub");
1051 }
1052 else {
1053 return -1;
1054 }
1055
1056 subHandle = fopen(subname, "rb");
1057 if (subHandle == NULL) {
1058 return -1;
1059 }
1060
1061 return 0;
1062}
1063
1064static int opensbifile(const char *isoname) {
1065 char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0";
1066 int s;
1067
1068 strncpy(sbiname, isoname, sizeof(sbiname));
1069 sbiname[MAXPATHLEN - 1] = '\0';
1070 if (strlen(sbiname) >= 4) {
1071 if (cdrIsoMultidiskCount > 1) {
1072 sprintf(disknum, "_%i.sbi", cdrIsoMultidiskSelect + 1);
1073 strcpy(sbiname + strlen(sbiname) - 4, disknum);
1074 }
1075 else
1076 strcpy(sbiname + strlen(sbiname) - 4, ".sbi");
1077 }
1078 else {
1079 return -1;
1080 }
1081
1082 s = msf2sec(ti[1].length);
1083
1084 return LoadSBI(sbiname, s);
1085}
1086
1087static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector)
1088{
1089 int ret;
1090 if (!f)
1091 return -1;
1092 if (fseeko(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET))
1093 goto fail_io;
1094 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1095 if (ret <= 0)
1096 goto fail_io;
1097 return ret;
1098
1099fail_io:
1100 // often happens in cdda gaps of a split cue/bin, so not logged
1101 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1102 return -1;
1103}
1104
1105static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)
1106{
1107 int ret;
1108
1109 if (!f)
1110 return -1;
1111 if (fseeko(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET))
1112 goto fail_io;
1113 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1114 if (ret <= 0)
1115 goto fail_io;
1116 return ret;
1117
1118fail_io:
1119 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1120 return -1;
1121}
1122
1123static int cdread_sub_sub_mixed(FILE *f, int sector)
1124{
1125 if (!f)
1126 return -1;
1127 if (fseeko(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + CD_FRAMESIZE_RAW, SEEK_SET))
1128 goto fail_io;
1129 if (fread(subbuffer, 1, SUB_FRAMESIZE, f) != SUB_FRAMESIZE)
1130 goto fail_io;
1131
1132 return SUB_FRAMESIZE;
1133
1134fail_io:
1135 SysPrintf("subchannel: file IO error %d, sector %u\n", errno, sector);
1136 return -1;
1137}
1138
1139static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size)
1140{
1141 static z_stream z;
1142 int ret = 0;
1143
1144 if (z.zalloc == NULL) {
1145 // XXX: one-time leak here..
1146 z.next_in = Z_NULL;
1147 z.avail_in = 0;
1148 z.zalloc = Z_NULL;
1149 z.zfree = Z_NULL;
1150 z.opaque = Z_NULL;
1151 ret = inflateInit2(&z, -15);
1152 }
1153 else
1154 ret = inflateReset(&z);
1155 if (ret != Z_OK)
1156 return ret;
1157
1158 z.next_in = in;
1159 z.avail_in = in_size;
1160 z.next_out = out;
1161 z.avail_out = *out_size;
1162
1163 ret = inflate(&z, Z_NO_FLUSH);
1164 //inflateEnd(&z);
1165
1166 *out_size -= z.avail_out;
1167 return ret == 1 ? 0 : ret;
1168}
1169
1170static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)
1171{
1172 unsigned long cdbuffer_size, cdbuffer_size_expect;
1173 unsigned int size;
1174 int is_compressed;
1175 off_t start_byte;
1176 int ret, block;
1177
1178 if (!cdHandle)
1179 return -1;
1180 if (base)
1181 sector += base / 2352;
1182
1183 block = sector >> compr_img->block_shift;
1184 compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1);
1185
1186 if (block == compr_img->current_block) {
1187 //printf("hit sect %d\n", sector);
1188 goto finish;
1189 }
1190
1191 if (sector >= compr_img->index_len * 16) {
1192 SysPrintf("sector %d is past img end\n", sector);
1193 return -1;
1194 }
1195
1196 start_byte = compr_img->index_table[block] & ~OFF_T_MSB;
1197 if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) {
1198 SysPrintf("seek error for block %d at %llx: ",
1199 block, (long long)start_byte);
1200 perror(NULL);
1201 return -1;
1202 }
1203
1204 is_compressed = !(compr_img->index_table[block] & OFF_T_MSB);
1205 size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte;
1206 if (size > sizeof(compr_img->buff_compressed)) {
1207 SysPrintf("block %d is too large: %u\n", block, size);
1208 return -1;
1209 }
1210
1211 if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0],
1212 1, size, cdHandle) != size) {
1213 SysPrintf("read error for block %d at %x: ", block, start_byte);
1214 perror(NULL);
1215 return -1;
1216 }
1217
1218 if (is_compressed) {
1219 cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift;
1220 cdbuffer_size = cdbuffer_size_expect;
1221 ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size);
1222 if (ret != 0) {
1223 SysPrintf("uncompress failed with %d for block %d, sector %d\n",
1224 ret, block, sector);
1225 return -1;
1226 }
1227 if (cdbuffer_size != cdbuffer_size_expect)
1228 SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size,
1229 cdbuffer_size_expect, sector);
1230 }
1231
1232 // done at last!
1233 compr_img->current_block = block;
1234
1235finish:
1236 if (dest != cdbuffer) // copy avoid HACK
1237 memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk],
1238 CD_FRAMESIZE_RAW);
1239 return CD_FRAMESIZE_RAW;
1240}
1241
1242#ifdef HAVE_CHD
1243static unsigned char *chd_get_sector(unsigned int current_buffer, unsigned int sector_in_hunk)
1244{
1245 return chd_img->buffer
1246 + current_buffer * chd_img->header->hunkbytes
1247 + sector_in_hunk * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE);
1248}
1249
1250static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector)
1251{
1252 int hunk;
1253
1254 sector += base;
1255
1256 hunk = sector / chd_img->sectors_per_hunk;
1257 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1258
1259 if (hunk == chd_img->current_hunk[0])
1260 chd_img->current_buffer = 0;
1261 else if (hunk == chd_img->current_hunk[1])
1262 chd_img->current_buffer = 1;
1263 else
1264 {
1265 chd_read(chd_img->chd, hunk, chd_img->buffer +
1266 chd_img->current_buffer * chd_img->header->hunkbytes);
1267 chd_img->current_hunk[chd_img->current_buffer] = hunk;
1268 }
1269
1270 if (dest != cdbuffer) // copy avoid HACK
1271 memcpy(dest, chd_get_sector(chd_img->current_buffer, chd_img->sector_in_hunk),
1272 CD_FRAMESIZE_RAW);
1273 return CD_FRAMESIZE_RAW;
1274}
1275
1276static int cdread_sub_chd(FILE *f, int sector)
1277{
1278 unsigned int sector_in_hunk;
1279 unsigned int buffer;
1280 int hunk;
1281
1282 if (!subChanMixed)
1283 return -1;
1284
1285 hunk = sector / chd_img->sectors_per_hunk;
1286 sector_in_hunk = sector % chd_img->sectors_per_hunk;
1287
1288 if (hunk == chd_img->current_hunk[0])
1289 buffer = 0;
1290 else if (hunk == chd_img->current_hunk[1])
1291 buffer = 1;
1292 else
1293 {
1294 buffer = chd_img->current_buffer ^ 1;
1295 chd_read(chd_img->chd, hunk, chd_img->buffer +
1296 buffer * chd_img->header->hunkbytes);
1297 chd_img->current_hunk[buffer] = hunk;
1298 }
1299
1300 memcpy(subbuffer, chd_get_sector(buffer, sector_in_hunk) + CD_FRAMESIZE_RAW, SUB_FRAMESIZE);
1301 return SUB_FRAMESIZE;
1302}
1303#endif
1304
1305static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector)
1306{
1307 int ret;
1308
1309 if (!f)
1310 return -1;
1311 fseeko(f, base + sector * 2048, SEEK_SET);
1312 ret = fread((char *)dest + 12 * 2, 1, 2048, f);
1313
1314 // not really necessary, fake mode 2 header
1315 memset(cdbuffer, 0, 12 * 2);
1316 sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]);
1317 cdbuffer[12 + 3] = 1;
1318
1319 return 12*2 + ret;
1320}
1321
1322static unsigned char * CALLBACK ISOgetBuffer_compr(void) {
1323 return compr_img->buff_raw[compr_img->sector_in_blk] + 12;
1324}
1325
1326#ifdef HAVE_CHD
1327static unsigned char * CALLBACK ISOgetBuffer_chd(void) {
1328 return chd_get_sector(chd_img->current_buffer, chd_img->sector_in_hunk) + 12;
1329}
1330#endif
1331
1332static unsigned char * CALLBACK ISOgetBuffer(void) {
1333 return cdbuffer + 12;
1334}
1335
1336static void PrintTracks(void) {
1337 int i;
1338
1339 for (i = 1; i <= numtracks; i++) {
1340 SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"),
1341 i, (ti[i].type == DATA ? "DATA" : "AUDIO"),
1342 ti[i].start[0], ti[i].start[1], ti[i].start[2],
1343 ti[i].length[0], ti[i].length[1], ti[i].length[2]);
1344 }
1345}
1346
1347// This function is invoked by the front-end when opening an ISO
1348// file for playback
1349static long CALLBACK ISOopen(void) {
1350 boolean isMode1ISO = FALSE;
1351 char alt_bin_filename[MAXPATHLEN];
1352 const char *bin_filename;
1353 char image_str[1024];
1354 off_t size_main;
1355
1356 if (cdHandle || chd_img) {
1357 return 0; // it's already open
1358 }
1359
1360 cdHandle = fopen(GetIsoFile(), "rb");
1361 if (cdHandle == NULL) {
1362 SysPrintf(_("Could't open '%s' for reading: %s\n"),
1363 GetIsoFile(), strerror(errno));
1364 return -1;
1365 }
1366 size_main = get_size(cdHandle);
1367
1368 snprintf(image_str, sizeof(image_str) - 6*4 - 1,
1369 "Loaded CD Image: %s", GetIsoFile());
1370
1371 cddaBigEndian = FALSE;
1372 subChanMixed = FALSE;
1373 subChanRaw = FALSE;
1374 pregapOffset = 0;
1375 cdrIsoMultidiskCount = 1;
1376 multifile = 0;
1377
1378 CDR_getBuffer = ISOgetBuffer;
1379 cdimg_read_func = cdread_normal;
1380 cdimg_read_sub_func = NULL;
1381
1382 if (parsetoc(GetIsoFile()) == 0) {
1383 strcat(image_str, "[+toc]");
1384 }
1385 else if (parseccd(GetIsoFile()) == 0) {
1386 strcat(image_str, "[+ccd]");
1387 }
1388 else if (parsemds(GetIsoFile()) == 0) {
1389 strcat(image_str, "[+mds]");
1390 }
1391 else if (parsecue(GetIsoFile()) == 0) {
1392 strcat(image_str, "[+cue]");
1393 }
1394 if (handlepbp(GetIsoFile()) == 0) {
1395 strcat(image_str, "[+pbp]");
1396 CDR_getBuffer = ISOgetBuffer_compr;
1397 cdimg_read_func = cdread_compressed;
1398 }
1399 else if (handlecbin(GetIsoFile()) == 0) {
1400 strcat(image_str, "[+cbin]");
1401 CDR_getBuffer = ISOgetBuffer_compr;
1402 cdimg_read_func = cdread_compressed;
1403 }
1404#ifdef HAVE_CHD
1405 else if (handlechd(GetIsoFile()) == 0) {
1406 strcat(image_str, "[+chd]");
1407 CDR_getBuffer = ISOgetBuffer_chd;
1408 cdimg_read_func = cdread_chd;
1409 cdimg_read_sub_func = cdread_sub_chd;
1410 fclose(cdHandle);
1411 cdHandle = NULL;
1412 }
1413#endif
1414
1415 if (!subChanMixed && opensubfile(GetIsoFile()) == 0) {
1416 strcat(image_str, "[+sub]");
1417 }
1418 if (opensbifile(GetIsoFile()) == 0) {
1419 strcat(image_str, "[+sbi]");
1420 }
1421
1422 // maybe user selected metadata file instead of main .bin ..
1423 bin_filename = GetIsoFile();
1424 if (cdHandle && size_main < 2352 * 0x10) {
1425 static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
1426 FILE *tmpf = NULL;
1427 size_t i;
1428 char *p;
1429
1430 strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename));
1431 alt_bin_filename[MAXPATHLEN - 1] = '\0';
1432 if (strlen(alt_bin_filename) >= 4) {
1433 p = alt_bin_filename + strlen(alt_bin_filename) - 4;
1434 for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
1435 strcpy(p, exts[i]);
1436 tmpf = fopen(alt_bin_filename, "rb");
1437 if (tmpf != NULL)
1438 break;
1439 }
1440 }
1441 if (tmpf != NULL) {
1442 bin_filename = alt_bin_filename;
1443 fclose(cdHandle);
1444 cdHandle = tmpf;
1445 size_main = get_size(cdHandle);
1446 }
1447 }
1448
1449 // guess whether it is mode1/2048
1450 if (cdHandle && cdimg_read_func == cdread_normal && size_main % 2048 == 0) {
1451 unsigned int modeTest = 0;
1452 if (!fread(&modeTest, sizeof(modeTest), 1, cdHandle)) {
1453 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
1454 }
1455 if (SWAP32(modeTest) != 0xffffff00) {
1456 strcat(image_str, "[2048]");
1457 isMode1ISO = TRUE;
1458 }
1459 }
1460
1461 SysPrintf("%s.\n", image_str);
1462
1463 PrintTracks();
1464
1465 if (subChanMixed && cdimg_read_func == cdread_normal) {
1466 cdimg_read_func = cdread_sub_mixed;
1467 cdimg_read_sub_func = cdread_sub_sub_mixed;
1468 }
1469 else if (isMode1ISO) {
1470 cdimg_read_func = cdread_2048;
1471 cdimg_read_sub_func = NULL;
1472 }
1473
1474 return 0;
1475}
1476
1477static long CALLBACK ISOclose(void) {
1478 int i;
1479
1480 if (cdHandle != NULL) {
1481 fclose(cdHandle);
1482 cdHandle = NULL;
1483 }
1484 if (subHandle != NULL) {
1485 fclose(subHandle);
1486 subHandle = NULL;
1487 }
1488 playing = FALSE;
1489 cddaHandle = NULL;
1490
1491 if (compr_img != NULL) {
1492 free(compr_img->index_table);
1493 free(compr_img);
1494 compr_img = NULL;
1495 }
1496
1497#ifdef HAVE_CHD
1498 if (chd_img != NULL) {
1499 chd_close(chd_img->chd);
1500 free(chd_img->buffer);
1501 free(chd_img);
1502 chd_img = NULL;
1503 }
1504#endif
1505
1506 for (i = 1; i <= numtracks; i++) {
1507 if (ti[i].handle != NULL) {
1508 fclose(ti[i].handle);
1509 ti[i].handle = NULL;
1510 }
1511 }
1512 numtracks = 0;
1513 ti[1].type = 0;
1514 UnloadSBI();
1515
1516 memset(cdbuffer, 0, sizeof(cdbuffer));
1517 CDR_getBuffer = ISOgetBuffer;
1518
1519 return 0;
1520}
1521
1522static long CALLBACK ISOinit(void) {
1523 assert(cdHandle == NULL);
1524 assert(subHandle == NULL);
1525
1526 return 0; // do nothing
1527}
1528
1529static long CALLBACK ISOshutdown(void) {
1530 ISOclose();
1531 return 0;
1532}
1533
1534// return Starting and Ending Track
1535// buffer:
1536// byte 0 - start track
1537// byte 1 - end track
1538static long CALLBACK ISOgetTN(unsigned char *buffer) {
1539 buffer[0] = 1;
1540
1541 if (numtracks > 0) {
1542 buffer[1] = numtracks;
1543 }
1544 else {
1545 buffer[1] = 1;
1546 }
1547
1548 return 0;
1549}
1550
1551// return Track Time
1552// buffer:
1553// byte 0 - frame
1554// byte 1 - second
1555// byte 2 - minute
1556static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) {
1557 if (track == 0) {
1558 unsigned int sect;
1559 unsigned char time[3];
1560 sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
1561 sec2msf(sect, (char *)time);
1562 buffer[2] = time[0];
1563 buffer[1] = time[1];
1564 buffer[0] = time[2];
1565 }
1566 else if (numtracks > 0 && track <= numtracks) {
1567 buffer[2] = ti[track].start[0];
1568 buffer[1] = ti[track].start[1];
1569 buffer[0] = ti[track].start[2];
1570 }
1571 else {
1572 buffer[2] = 0;
1573 buffer[1] = 2;
1574 buffer[0] = 0;
1575 }
1576
1577 return 0;
1578}
1579
1580// decode 'raw' subchannel data ripped by cdrdao
1581static void DecodeRawSubData(void) {
1582 unsigned char subQData[12];
1583 int i;
1584
1585 memset(subQData, 0, sizeof(subQData));
1586
1587 for (i = 0; i < 8 * 12; i++) {
1588 if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed
1589 subQData[i >> 3] |= (1 << (7 - (i & 7)));
1590 }
1591 }
1592
1593 memcpy(&subbuffer[12], subQData, 12);
1594}
1595
1596// read track
1597// time: byte 0 - minute; byte 1 - second; byte 2 - frame
1598// uses bcd format
1599static boolean CALLBACK ISOreadTrack(unsigned char *time) {
1600 int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2]));
1601 long ret;
1602
1603 if (!cdHandle && !chd_img)
1604 return 0;
1605
1606 if (pregapOffset && sector >= pregapOffset)
1607 sector -= 2 * 75;
1608
1609 ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector);
1610 if (ret < 12*2 + 2048)
1611 return 0;
1612
1613 return 1;
1614}
1615
1616// plays cdda audio
1617// sector: byte 0 - minute; byte 1 - second; byte 2 - frame
1618// does NOT uses bcd format
1619static long CALLBACK ISOplay(unsigned char *time) {
1620 playing = TRUE;
1621 return 0;
1622}
1623
1624// stops cdda audio
1625static long CALLBACK ISOstop(void) {
1626 playing = FALSE;
1627 return 0;
1628}
1629
1630// gets subchannel data
1631static unsigned char* CALLBACK ISOgetBufferSub(int sector) {
1632 if (pregapOffset && sector >= pregapOffset) {
1633 sector -= 2 * 75;
1634 if (sector < pregapOffset) // ?
1635 return NULL;
1636 }
1637
1638 if (cdimg_read_sub_func != NULL) {
1639 if (cdimg_read_sub_func(cdHandle, sector) != SUB_FRAMESIZE)
1640 return NULL;
1641 }
1642 else if (subHandle != NULL) {
1643 if (fseeko(subHandle, sector * SUB_FRAMESIZE, SEEK_SET))
1644 return NULL;
1645 if (fread(subbuffer, 1, SUB_FRAMESIZE, subHandle) != SUB_FRAMESIZE)
1646 return NULL;
1647 }
1648 else {
1649 return NULL;
1650 }
1651
1652 if (subChanRaw) DecodeRawSubData();
1653 return subbuffer;
1654}
1655
1656static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
1657 u32 sect;
1658
1659 CDR__getStatus(stat);
1660
1661 if (playing) {
1662 stat->Type = 0x02;
1663 stat->Status |= 0x80;
1664 }
1665 else {
1666 // BIOS - boot ID (CD type)
1667 stat->Type = ti[1].type;
1668 }
1669
1670 // relative -> absolute time
1671 sect = cddaCurPos;
1672 sec2msf(sect, (char *)stat->Time);
1673
1674 return 0;
1675}
1676
1677// read CDDA sector into buffer
1678long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) {
1679 unsigned char msf[3] = {m, s, f};
1680 unsigned int track, track_start = 0;
1681 FILE *handle = cdHandle;
1682 int ret;
1683
1684 cddaCurPos = msf2sec((char *)msf);
1685
1686 // find current track index
1687 for (track = numtracks; ; track--) {
1688 track_start = msf2sec(ti[track].start);
1689 if (track_start <= cddaCurPos)
1690 break;
1691 if (track == 1)
1692 break;
1693 }
1694
1695 // data tracks play silent
1696 if (ti[track].type != CDDA) {
1697 memset(buffer, 0, CD_FRAMESIZE_RAW);
1698 return 0;
1699 }
1700
1701 if (multifile) {
1702 // find the file that contains this track
1703 unsigned int file;
1704 for (file = track; file > 1; file--) {
1705 if (ti[file].handle != NULL) {
1706 handle = ti[file].handle;
1707 break;
1708 }
1709 }
1710 }
1711 if (!handle) {
1712 memset(buffer, 0, CD_FRAMESIZE_RAW);
1713 return -1;
1714 }
1715
1716 ret = cdimg_read_func(handle, ti[track].start_offset,
1717 buffer, cddaCurPos - track_start);
1718 if (ret != CD_FRAMESIZE_RAW) {
1719 memset(buffer, 0, CD_FRAMESIZE_RAW);
1720 return -1;
1721 }
1722
1723 if (cddaBigEndian) {
1724 int i;
1725 unsigned char tmp;
1726
1727 for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) {
1728 tmp = buffer[i * 2];
1729 buffer[i * 2] = buffer[i * 2 + 1];
1730 buffer[i * 2 + 1] = tmp;
1731 }
1732 }
1733
1734 return 0;
1735}
1736
1737void cdrIsoInit(void) {
1738 CDR_init = ISOinit;
1739 CDR_shutdown = ISOshutdown;
1740 CDR_open = ISOopen;
1741 CDR_close = ISOclose;
1742 CDR_getTN = ISOgetTN;
1743 CDR_getTD = ISOgetTD;
1744 CDR_readTrack = ISOreadTrack;
1745 CDR_getBuffer = ISOgetBuffer;
1746 CDR_play = ISOplay;
1747 CDR_stop = ISOstop;
1748 CDR_getBufferSub = ISOgetBufferSub;
1749 CDR_getStatus = ISOgetStatus;
1750 CDR_readCDDA = ISOreadCDDA;
1751
1752 CDR_getDriveLetter = CDR__getDriveLetter;
1753 CDR_configure = CDR__configure;
1754 CDR_test = CDR__test;
1755 CDR_about = CDR__about;
1756 CDR_setfilename = CDR__setfilename;
1757
1758 numtracks = 0;
1759}
1760
1761int cdrIsoActive(void) {
1762 return (cdHandle || chd_img);
1763}
ARM optimized PCSX fork