notaz.gp2x.de / pcsx_rearmed.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
gpulib: fix out-of-bounds reads in do_cmd_buffer()
[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#include <errno.h>
29#include <zlib.h>
30#ifdef HAVE_CHD
31#include <chd.h>
32#endif
33
34#ifdef _WIN32
35#define WIN32_LEAN_AND_MEAN
36#include <process.h>
37#include <windows.h>
38#define strcasecmp _stricmp
39#define usleep(x) (Sleep((x) / 1000))
40#else
41#include <pthread.h>
42#include <sys/time.h>
43#include <unistd.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;
57static boolean subChanMissing = FALSE;
58
59static boolean multifile = FALSE;
60
61static unsigned char cdbuffer[CD_FRAMESIZE_RAW];
62static unsigned char subbuffer[SUB_FRAMESIZE];
63
64static unsigned char sndbuffer[CD_FRAMESIZE_RAW * 10];
65
66#define CDDA_FRAMETIME (1000 * (sizeof(sndbuffer) / CD_FRAMESIZE_RAW) / 75)
67
68#ifdef _WIN32
69static HANDLE threadid;
70#else
71static pthread_t threadid;
72#endif
73static unsigned int initial_offset = 0;
74static boolean playing = FALSE;
75static boolean cddaBigEndian = FALSE;
76// cdda sectors in toc, byte offset in file
77static unsigned int cdda_cur_sector;
78static unsigned int cdda_first_sector;
79static unsigned int cdda_file_offset;
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? */
84static unsigned int pregapOffset;
85
86#define cddaCurPos cdda_cur_sector
87
88// compressed image stuff
89static 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
100static struct {
101 unsigned char (*buffer)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE];
102 chd_file* chd;
103 const chd_header* header;
104 unsigned int sectors_per_hunk;
105 unsigned int current_hunk;
106 unsigned int sector_in_hunk;
107} *chd_img;
108#endif
109
110int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
111
112char* CALLBACK CDR__getDriveLetter(void);
113long CALLBACK CDR__configure(void);
114long CALLBACK CDR__test(void);
115void CALLBACK CDR__about(void);
116long CALLBACK CDR__setfilename(char *filename);
117long CALLBACK CDR__getStatus(struct CdrStat *stat);
118
119static void DecodeRawSubData(void);
120
121struct trackinfo {
122 enum {DATA=1, CDDA} type;
123 char start[3]; // MSF-format
124 char length[3]; // MSF-format
125 FILE *handle; // for multi-track images CDDA
126 unsigned int start_offset; // byte offset from start of above file
127};
128
129#define MAXTRACKS 100 /* How many tracks can a CD hold? */
130
131static int numtracks = 0;
132static struct trackinfo ti[MAXTRACKS];
133
134// get a sector from a msf-array
135static unsigned int msf2sec(char *msf) {
136 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
137}
138
139static void sec2msf(unsigned int s, char *msf) {
140 msf[0] = s / 75 / 60;
141 s = s - msf[0] * 75 * 60;
142 msf[1] = s / 75;
143 s = s - msf[1] * 75;
144 msf[2] = s;
145}
146
147// divide a string of xx:yy:zz into m, s, f
148static void tok2msf(char *time, char *msf) {
149 char *token;
150
151 token = strtok(time, ":");
152 if (token) {
153 msf[0] = atoi(token);
154 }
155 else {
156 msf[0] = 0;
157 }
158
159 token = strtok(NULL, ":");
160 if (token) {
161 msf[1] = atoi(token);
162 }
163 else {
164 msf[1] = 0;
165 }
166
167 token = strtok(NULL, ":");
168 if (token) {
169 msf[2] = atoi(token);
170 }
171 else {
172 msf[2] = 0;
173 }
174}
175
176#ifndef _WIN32
177static long GetTickCount(void) {
178 static time_t initial_time = 0;
179 struct timeval now;
180
181 gettimeofday(&now, NULL);
182
183 if (initial_time == 0) {
184 initial_time = now.tv_sec;
185 }
186
187 return (now.tv_sec - initial_time) * 1000L + now.tv_usec / 1000L;
188}
189#endif
190
191// this thread plays audio data
192#ifdef _WIN32
193static void playthread(void *param)
194#else
195static void *playthread(void *param)
196#endif
197{
198 long osleep, d, t, i, s;
199 unsigned char tmp;
200 int ret = 0, sector_offs;
201
202 t = GetTickCount();
203
204 while (playing) {
205 s = 0;
206 for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) {
207 sector_offs = cdda_cur_sector - cdda_first_sector;
208 if (sector_offs < 0) {
209 d = CD_FRAMESIZE_RAW;
210 memset(sndbuffer + s, 0, d);
211 }
212 else {
213 d = cdimg_read_func(cddaHandle, cdda_file_offset,
214 sndbuffer + s, sector_offs);
215 if (d < CD_FRAMESIZE_RAW)
216 break;
217 }
218
219 s += d;
220 cdda_cur_sector++;
221 }
222
223 if (s == 0) {
224 playing = FALSE;
225 initial_offset = 0;
226 break;
227 }
228
229 if (!cdr.Muted && playing) {
230 if (cddaBigEndian) {
231 for (i = 0; i < s / 2; i++) {
232 tmp = sndbuffer[i * 2];
233 sndbuffer[i * 2] = sndbuffer[i * 2 + 1];
234 sndbuffer[i * 2 + 1] = tmp;
235 }
236 }
237
238 // can't do it yet due to readahead..
239 //cdrAttenuate((short *)sndbuffer, s / 4, 1);
240 do {
241 ret = SPU_playCDDAchannel((short *)sndbuffer, s);
242 if (ret == 0x7761)
243 {
244 usleep(6 * 1000);
245 }
246 } while (ret == 0x7761 && playing); // rearmed_wait
247 }
248
249 if (ret != 0x676f) { // !rearmed_go
250 // do approx sleep
251 long now;
252
253 // HACK: stop feeding data while emu is paused
254 extern int stop;
255 while (stop && playing)
256 {
257 usleep(10000);
258 }
259
260 now = GetTickCount();
261 osleep = t - now;
262 if (osleep <= 0) {
263 osleep = 1;
264 t = now;
265 }
266 else if (osleep > CDDA_FRAMETIME) {
267 osleep = CDDA_FRAMETIME;
268 t = now;
269 }
270
271 usleep(osleep * 1000);
272 t += CDDA_FRAMETIME;
273 }
274
275 }
276
277#ifdef _WIN32
278 _endthread();
279#else
280 pthread_exit(0);
281 return NULL;
282#endif
283}
284
285// stop the CDDA playback
286static void stopCDDA() {
287 if (!playing) {
288 return;
289 }
290
291 playing = FALSE;
292#ifdef _WIN32
293 WaitForSingleObject(threadid, INFINITE);
294#else
295 pthread_join(threadid, NULL);
296#endif
297}
298
299// start the CDDA playback
300static void startCDDA(void) {
301 if (playing) {
302 stopCDDA();
303 }
304
305 playing = TRUE;
306
307#ifdef _WIN32
308 threadid = (HANDLE)_beginthread(playthread, 0, NULL);
309#else
310 pthread_create(&threadid, NULL, playthread, NULL);
311#endif
312}
313
314// this function tries to get the .toc file of the given .bin
315// the necessary data is put into the ti (trackinformation)-array
316static int parsetoc(const char *isofile) {
317 char tocname[MAXPATHLEN];
318 FILE *fi;
319 char linebuf[256], tmp[256], name[256];
320 char *token;
321 char time[20], time2[20];
322 unsigned int t, sector_offs, sector_size;
323 unsigned int current_zero_gap = 0;
324
325 numtracks = 0;
326
327 // copy name of the iso and change extension from .bin to .toc
328 strncpy(tocname, isofile, sizeof(tocname));
329 tocname[MAXPATHLEN - 1] = '\0';
330 if (strlen(tocname) >= 4) {
331 strcpy(tocname + strlen(tocname) - 4, ".toc");
332 }
333 else {
334 return -1;
335 }
336
337 if ((fi = fopen(tocname, "r")) == NULL) {
338 // try changing extension to .cue (to satisfy some stupid tutorials)
339 strcpy(tocname + strlen(tocname) - 4, ".cue");
340 if ((fi = fopen(tocname, "r")) == NULL) {
341 // if filename is image.toc.bin, try removing .bin (for Brasero)
342 strcpy(tocname, isofile);
343 t = strlen(tocname);
344 if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) {
345 tocname[t - 4] = '\0';
346 if ((fi = fopen(tocname, "r")) == NULL) {
347 return -1;
348 }
349 }
350 else {
351 return -1;
352 }
353 }
354 // check if it's really a TOC named as a .cue
355 fgets(linebuf, sizeof(linebuf), fi);
356 token = strtok(linebuf, " ");
357 if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) {
358 fclose(fi);
359 return -1;
360 }
361 fseek(fi, 0, SEEK_SET);
362 }
363
364 memset(&ti, 0, sizeof(ti));
365 cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio
366
367 sector_size = CD_FRAMESIZE_RAW;
368 sector_offs = 2 * 75;
369
370 // parse the .toc file
371 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
372 // search for tracks
373 strncpy(tmp, linebuf, sizeof(linebuf));
374 token = strtok(tmp, " ");
375
376 if (token == NULL) continue;
377
378 if (!strcmp(token, "TRACK")) {
379 sector_offs += current_zero_gap;
380 current_zero_gap = 0;
381
382 // get type of track
383 token = strtok(NULL, " ");
384 numtracks++;
385
386 if (!strncmp(token, "MODE2_RAW", 9)) {
387 ti[numtracks].type = DATA;
388 sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0
389
390 // check if this image contains mixed subchannel data
391 token = strtok(NULL, " ");
392 if (token != NULL && !strncmp(token, "RW", 2)) {
393 sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE;
394 subChanMixed = TRUE;
395 if (!strncmp(token, "RW_RAW", 6))
396 subChanRaw = TRUE;
397 }
398 }
399 else if (!strncmp(token, "AUDIO", 5)) {
400 ti[numtracks].type = CDDA;
401 }
402 }
403 else if (!strcmp(token, "DATAFILE")) {
404 if (ti[numtracks].type == CDDA) {
405 sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2);
406 ti[numtracks].start_offset = t;
407 t = t / sector_size + sector_offs;
408 sec2msf(t, (char *)&ti[numtracks].start);
409 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
410 }
411 else {
412 sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time);
413 tok2msf((char *)&time, (char *)&ti[numtracks].length);
414 }
415 }
416 else if (!strcmp(token, "FILE")) {
417 sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2);
418 tok2msf((char *)&time, (char *)&ti[numtracks].start);
419 t += msf2sec(ti[numtracks].start) * sector_size;
420 ti[numtracks].start_offset = t;
421 t = t / sector_size + sector_offs;
422 sec2msf(t, (char *)&ti[numtracks].start);
423 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
424 }
425 else if (!strcmp(token, "ZERO") || !strcmp(token, "SILENCE")) {
426 // skip unneeded optional fields
427 while (token != NULL) {
428 token = strtok(NULL, " ");
429 if (strchr(token, ':') != NULL)
430 break;
431 }
432 if (token != NULL) {
433 tok2msf(token, tmp);
434 current_zero_gap = msf2sec(tmp);
435 }
436 if (numtracks > 1) {
437 t = ti[numtracks - 1].start_offset;
438 t /= sector_size;
439 pregapOffset = t + msf2sec(ti[numtracks - 1].length);
440 }
441 }
442 else if (!strcmp(token, "START")) {
443 token = strtok(NULL, " ");
444 if (token != NULL && strchr(token, ':')) {
445 tok2msf(token, tmp);
446 t = msf2sec(tmp);
447 ti[numtracks].start_offset += (t - current_zero_gap) * sector_size;
448 t = msf2sec(ti[numtracks].start) + t;
449 sec2msf(t, (char *)&ti[numtracks].start);
450 }
451 }
452 }
453
454 fclose(fi);
455
456 return 0;
457}
458
459// this function tries to get the .cue file of the given .bin
460// the necessary data is put into the ti (trackinformation)-array
461static int parsecue(const char *isofile) {
462 char cuename[MAXPATHLEN];
463 char filepath[MAXPATHLEN];
464 char *incue_fname;
465 FILE *fi;
466 char *token;
467 char time[20];
468 char *tmp;
469 char linebuf[256], tmpb[256], dummy[256];
470 unsigned int incue_max_len;
471 unsigned int t, file_len, mode, sector_offs;
472 unsigned int sector_size = 2352;
473
474 numtracks = 0;
475
476 // copy name of the iso and change extension from .bin to .cue
477 strncpy(cuename, isofile, sizeof(cuename));
478 cuename[MAXPATHLEN - 1] = '\0';
479 if (strlen(cuename) >= 4) {
480 strcpy(cuename + strlen(cuename) - 4, ".cue");
481 }
482 else {
483 return -1;
484 }
485
486 if ((fi = fopen(cuename, "r")) == NULL) {
487 return -1;
488 }
489
490 // Some stupid tutorials wrongly tell users to use cdrdao to rip a
491 // "bin/cue" image, which is in fact a "bin/toc" image. So let's check
492 // that...
493 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
494 if (!strncmp(linebuf, "CD_ROM_XA", 9)) {
495 // Don't proceed further, as this is actually a .toc file rather
496 // than a .cue file.
497 fclose(fi);
498 return parsetoc(isofile);
499 }
500 fseek(fi, 0, SEEK_SET);
501 }
502
503 // build a path for files referenced in .cue
504 strncpy(filepath, cuename, sizeof(filepath));
505 tmp = strrchr(filepath, '/');
506 if (tmp == NULL)
507 tmp = strrchr(filepath, '\\');
508 if (tmp != NULL)
509 tmp++;
510 else
511 tmp = filepath;
512 *tmp = 0;
513 filepath[sizeof(filepath) - 1] = 0;
514 incue_fname = tmp;
515 incue_max_len = sizeof(filepath) - (tmp - filepath) - 1;
516
517 memset(&ti, 0, sizeof(ti));
518
519 file_len = 0;
520 sector_offs = 2 * 75;
521
522 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
523 strncpy(dummy, linebuf, sizeof(linebuf));
524 token = strtok(dummy, " ");
525
526 if (token == NULL) {
527 continue;
528 }
529
530 if (!strcmp(token, "TRACK")) {
531 numtracks++;
532
533 sector_size = 0;
534 if (strstr(linebuf, "AUDIO") != NULL) {
535 ti[numtracks].type = CDDA;
536 sector_size = 2352;
537 }
538 else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, &sector_size) == 3)
539 ti[numtracks].type = DATA;
540 else {
541 SysPrintf(".cue: failed to parse TRACK\n");
542 ti[numtracks].type = numtracks == 1 ? DATA : CDDA;
543 }
544 if (sector_size == 0)
545 sector_size = 2352;
546 }
547 else if (!strcmp(token, "INDEX")) {
548 if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2)
549 SysPrintf(".cue: failed to parse INDEX\n");
550 tok2msf(time, (char *)&ti[numtracks].start);
551
552 t = msf2sec(ti[numtracks].start);
553 ti[numtracks].start_offset = t * sector_size;
554 t += sector_offs;
555 sec2msf(t, ti[numtracks].start);
556
557 // default track length to file length
558 t = file_len - ti[numtracks].start_offset / sector_size;
559 sec2msf(t, ti[numtracks].length);
560
561 if (numtracks > 1 && ti[numtracks].handle == NULL) {
562 // this track uses the same file as the last,
563 // start of this track is last track's end
564 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
565 sec2msf(t, ti[numtracks - 1].length);
566 }
567 if (numtracks > 1 && pregapOffset == -1)
568 pregapOffset = ti[numtracks].start_offset / sector_size;
569 }
570 else if (!strcmp(token, "PREGAP")) {
571 if (sscanf(linebuf, " PREGAP %8s", time) == 1) {
572 tok2msf(time, dummy);
573 sector_offs += msf2sec(dummy);
574 }
575 pregapOffset = -1; // mark to fill track start_offset
576 }
577 else if (!strcmp(token, "FILE")) {
578 t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb);
579 if (t != 1)
580 sscanf(linebuf, " FILE %255s", tmpb);
581
582 tmp = strrchr(tmpb, '\\');
583 if (tmp == NULL)
584 tmp = strrchr(tmpb, '/');
585 if (tmp != NULL)
586 tmp++;
587 else
588 tmp = tmpb;
589 strncpy(incue_fname, tmp, incue_max_len);
590 ti[numtracks + 1].handle = fopen(filepath, "rb");
591
592 // update global offset if this is not first file in this .cue
593 if (numtracks + 1 > 1) {
594 multifile = 1;
595 sector_offs += file_len;
596 }
597
598 file_len = 0;
599 if (ti[numtracks + 1].handle == NULL) {
600 SysPrintf(_("\ncould not open: %s\n"), filepath);
601 continue;
602 }
603 fseek(ti[numtracks + 1].handle, 0, SEEK_END);
604 file_len = ftell(ti[numtracks + 1].handle) / 2352;
605
606 if (numtracks == 0 && strlen(isofile) >= 4 &&
607 strcmp(isofile + strlen(isofile) - 4, ".cue") == 0)
608 {
609 // user selected .cue as image file, use it's data track instead
610 fclose(cdHandle);
611 cdHandle = fopen(filepath, "rb");
612 }
613 }
614 }
615
616 fclose(fi);
617
618 return 0;
619}
620
621// this function tries to get the .ccd file of the given .img
622// the necessary data is put into the ti (trackinformation)-array
623static int parseccd(const char *isofile) {
624 char ccdname[MAXPATHLEN];
625 FILE *fi;
626 char linebuf[256];
627 unsigned int t;
628
629 numtracks = 0;
630
631 // copy name of the iso and change extension from .img to .ccd
632 strncpy(ccdname, isofile, sizeof(ccdname));
633 ccdname[MAXPATHLEN - 1] = '\0';
634 if (strlen(ccdname) >= 4) {
635 strcpy(ccdname + strlen(ccdname) - 4, ".ccd");
636 }
637 else {
638 return -1;
639 }
640
641 if ((fi = fopen(ccdname, "r")) == NULL) {
642 return -1;
643 }
644
645 memset(&ti, 0, sizeof(ti));
646
647 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
648 if (!strncmp(linebuf, "[TRACK", 6)){
649 numtracks++;
650 }
651 else if (!strncmp(linebuf, "MODE=", 5)) {
652 sscanf(linebuf, "MODE=%d", &t);
653 ti[numtracks].type = ((t == 0) ? CDDA : DATA);
654 }
655 else if (!strncmp(linebuf, "INDEX 1=", 8)) {
656 sscanf(linebuf, "INDEX 1=%d", &t);
657 sec2msf(t + 2 * 75, ti[numtracks].start);
658 ti[numtracks].start_offset = t * 2352;
659
660 // If we've already seen another track, this is its end
661 if (numtracks > 1) {
662 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
663 sec2msf(t, ti[numtracks - 1].length);
664 }
665 }
666 }
667
668 fclose(fi);
669
670 // Fill out the last track's end based on size
671 if (numtracks >= 1) {
672 fseek(cdHandle, 0, SEEK_END);
673 t = ftell(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75;
674 sec2msf(t, ti[numtracks].length);
675 }
676
677 return 0;
678}
679
680// this function tries to get the .mds file of the given .mdf
681// the necessary data is put into the ti (trackinformation)-array
682static int parsemds(const char *isofile) {
683 char mdsname[MAXPATHLEN];
684 FILE *fi;
685 unsigned int offset, extra_offset, l, i;
686 unsigned short s;
687
688 numtracks = 0;
689
690 // copy name of the iso and change extension from .mdf to .mds
691 strncpy(mdsname, isofile, sizeof(mdsname));
692 mdsname[MAXPATHLEN - 1] = '\0';
693 if (strlen(mdsname) >= 4) {
694 strcpy(mdsname + strlen(mdsname) - 4, ".mds");
695 }
696 else {
697 return -1;
698 }
699
700 if ((fi = fopen(mdsname, "rb")) == NULL) {
701 return -1;
702 }
703
704 memset(&ti, 0, sizeof(ti));
705
706 // check if it's a valid mds file
707 fread(&i, 1, sizeof(unsigned int), fi);
708 i = SWAP32(i);
709 if (i != 0x4944454D) {
710 // not an valid mds file
711 fclose(fi);
712 return -1;
713 }
714
715 // get offset to session block
716 fseek(fi, 0x50, SEEK_SET);
717 fread(&offset, 1, sizeof(unsigned int), fi);
718 offset = SWAP32(offset);
719
720 // get total number of tracks
721 offset += 14;
722 fseek(fi, offset, SEEK_SET);
723 fread(&s, 1, sizeof(unsigned short), fi);
724 s = SWAP16(s);
725 numtracks = s;
726
727 // get offset to track blocks
728 fseek(fi, 4, SEEK_CUR);
729 fread(&offset, 1, sizeof(unsigned int), fi);
730 offset = SWAP32(offset);
731
732 // skip lead-in data
733 while (1) {
734 fseek(fi, offset + 4, SEEK_SET);
735 if (fgetc(fi) < 0xA0) {
736 break;
737 }
738 offset += 0x50;
739 }
740
741 // check if the image contains mixed subchannel data
742 fseek(fi, offset + 1, SEEK_SET);
743 subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE);
744
745 // read track data
746 for (i = 1; i <= numtracks; i++) {
747 fseek(fi, offset, SEEK_SET);
748
749 // get the track type
750 ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA);
751 fseek(fi, 8, SEEK_CUR);
752
753 // get the track starting point
754 ti[i].start[0] = fgetc(fi);
755 ti[i].start[1] = fgetc(fi);
756 ti[i].start[2] = fgetc(fi);
757
758 fread(&extra_offset, 1, sizeof(unsigned int), fi);
759 extra_offset = SWAP32(extra_offset);
760
761 // get track start offset (in .mdf)
762 fseek(fi, offset + 0x28, SEEK_SET);
763 fread(&l, 1, sizeof(unsigned int), fi);
764 l = SWAP32(l);
765 ti[i].start_offset = l;
766
767 // get pregap
768 fseek(fi, extra_offset, SEEK_SET);
769 fread(&l, 1, sizeof(unsigned int), fi);
770 l = SWAP32(l);
771 if (l != 0 && i > 1)
772 pregapOffset = msf2sec(ti[i].start);
773
774 // get the track length
775 fread(&l, 1, sizeof(unsigned int), fi);
776 l = SWAP32(l);
777 sec2msf(l, ti[i].length);
778
779 offset += 0x50;
780 }
781
782 fclose(fi);
783 return 0;
784}
785
786static int handlepbp(const char *isofile) {
787 struct {
788 unsigned int sig;
789 unsigned int dontcare[8];
790 unsigned int psar_offs;
791 } pbp_hdr;
792 struct {
793 unsigned char type;
794 unsigned char pad0;
795 unsigned char track;
796 char index0[3];
797 char pad1;
798 char index1[3];
799 } toc_entry;
800 struct {
801 unsigned int offset;
802 unsigned int size;
803 unsigned int dontcare[6];
804 } index_entry;
805 char psar_sig[11];
806 off_t psisoimg_offs, cdimg_base;
807 unsigned int t, cd_length;
808 unsigned int offsettab[8];
809 const char *ext = NULL;
810 int i, ret;
811
812 if (strlen(isofile) >= 4)
813 ext = isofile + strlen(isofile) - 4;
814 if (ext == NULL || (strcmp(ext, ".pbp") != 0 && strcmp(ext, ".PBP") != 0))
815 return -1;
816
817 fseeko(cdHandle, 0, SEEK_SET);
818
819 numtracks = 0;
820
821 ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle);
822 if (ret != sizeof(pbp_hdr)) {
823 SysPrintf("failed to read pbp\n");
824 goto fail_io;
825 }
826
827 ret = fseeko(cdHandle, pbp_hdr.psar_offs, SEEK_SET);
828 if (ret != 0) {
829 SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs);
830 goto fail_io;
831 }
832
833 psisoimg_offs = pbp_hdr.psar_offs;
834 fread(psar_sig, 1, sizeof(psar_sig), cdHandle);
835 psar_sig[10] = 0;
836 if (strcmp(psar_sig, "PSTITLEIMG") == 0) {
837 // multidisk image?
838 ret = fseeko(cdHandle, pbp_hdr.psar_offs + 0x200, SEEK_SET);
839 if (ret != 0) {
840 SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs + 0x200);
841 goto fail_io;
842 }
843
844 if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) {
845 SysPrintf("failed to read offsettab\n");
846 goto fail_io;
847 }
848
849 for (i = 0; i < sizeof(offsettab) / sizeof(offsettab[0]); i++) {
850 if (offsettab[i] == 0)
851 break;
852 }
853 cdrIsoMultidiskCount = i;
854 if (cdrIsoMultidiskCount == 0) {
855 SysPrintf("multidisk eboot has 0 images?\n");
856 goto fail_io;
857 }
858
859 if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount)
860 cdrIsoMultidiskSelect = 0;
861
862 psisoimg_offs += offsettab[cdrIsoMultidiskSelect];
863
864 ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET);
865 if (ret != 0) {
866 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs);
867 goto fail_io;
868 }
869
870 fread(psar_sig, 1, sizeof(psar_sig), cdHandle);
871 psar_sig[10] = 0;
872 }
873
874 if (strcmp(psar_sig, "PSISOIMG00") != 0) {
875 SysPrintf("bad psar_sig: %s\n", psar_sig);
876 goto fail_io;
877 }
878
879 // seek to TOC
880 ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET);
881 if (ret != 0) {
882 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800);
883 goto fail_io;
884 }
885
886 // first 3 entries are special
887 fseek(cdHandle, sizeof(toc_entry), SEEK_CUR);
888 fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
889 numtracks = btoi(toc_entry.index1[0]);
890
891 fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
892 cd_length = btoi(toc_entry.index1[0]) * 60 * 75 +
893 btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]);
894
895 for (i = 1; i <= numtracks; i++) {
896 fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
897
898 ti[i].type = (toc_entry.type == 1) ? CDDA : DATA;
899
900 ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 +
901 btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]);
902 ti[i].start_offset *= 2352;
903 ti[i].start[0] = btoi(toc_entry.index1[0]);
904 ti[i].start[1] = btoi(toc_entry.index1[1]);
905 ti[i].start[2] = btoi(toc_entry.index1[2]);
906
907 if (i > 1) {
908 t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start);
909 sec2msf(t, ti[i - 1].length);
910 }
911 }
912 t = cd_length - ti[numtracks].start_offset / 2352;
913 sec2msf(t, ti[numtracks].length);
914
915 // seek to ISO index
916 ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET);
917 if (ret != 0) {
918 SysPrintf("failed to seek to ISO index\n");
919 goto fail_io;
920 }
921
922 compr_img = calloc(1, sizeof(*compr_img));
923 if (compr_img == NULL)
924 goto fail_io;
925
926 compr_img->block_shift = 4;
927 compr_img->current_block = (unsigned int)-1;
928
929 compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry);
930 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
931 if (compr_img->index_table == NULL)
932 goto fail_io;
933
934 cdimg_base = psisoimg_offs + 0x100000;
935 for (i = 0; i < compr_img->index_len; i++) {
936 ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle);
937 if (ret != sizeof(index_entry)) {
938 SysPrintf("failed to read index_entry #%d\n", i);
939 goto fail_index;
940 }
941
942 if (index_entry.size == 0)
943 break;
944
945 compr_img->index_table[i] = cdimg_base + index_entry.offset;
946 }
947 compr_img->index_table[i] = cdimg_base + index_entry.offset + index_entry.size;
948
949 return 0;
950
951fail_index:
952 free(compr_img->index_table);
953 compr_img->index_table = NULL;
954fail_io:
955 if (compr_img != NULL) {
956 free(compr_img);
957 compr_img = NULL;
958 }
959 return -1;
960}
961
962static int handlecbin(const char *isofile) {
963 struct
964 {
965 char magic[4];
966 unsigned int header_size;
967 unsigned long long total_bytes;
968 unsigned int block_size;
969 unsigned char ver; // 1
970 unsigned char align;
971 unsigned char rsv_06[2];
972 } ciso_hdr;
973 const char *ext = NULL;
974 unsigned int *index_table = NULL;
975 unsigned int index = 0, plain;
976 int i, ret;
977
978 if (strlen(isofile) >= 5)
979 ext = isofile + strlen(isofile) - 5;
980 if (ext == NULL || (strcasecmp(ext + 1, ".cbn") != 0 && strcasecmp(ext, ".cbin") != 0))
981 return -1;
982
983 fseek(cdHandle, 0, SEEK_SET);
984
985 ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle);
986 if (ret != sizeof(ciso_hdr)) {
987 SysPrintf("failed to read ciso header\n");
988 return -1;
989 }
990
991 if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) {
992 SysPrintf("bad ciso header\n");
993 return -1;
994 }
995 if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) {
996 ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET);
997 if (ret != 0) {
998 SysPrintf("failed to seek to %x\n", ciso_hdr.header_size);
999 return -1;
1000 }
1001 }
1002
1003 compr_img = calloc(1, sizeof(*compr_img));
1004 if (compr_img == NULL)
1005 goto fail_io;
1006
1007 compr_img->block_shift = 0;
1008 compr_img->current_block = (unsigned int)-1;
1009
1010 compr_img->index_len = ciso_hdr.total_bytes / ciso_hdr.block_size;
1011 index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0]));
1012 if (index_table == NULL)
1013 goto fail_io;
1014
1015 ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle);
1016 if (ret != compr_img->index_len) {
1017 SysPrintf("failed to read index table\n");
1018 goto fail_index;
1019 }
1020
1021 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
1022 if (compr_img->index_table == NULL)
1023 goto fail_index;
1024
1025 for (i = 0; i < compr_img->index_len + 1; i++) {
1026 index = index_table[i];
1027 plain = index & 0x80000000;
1028 index &= 0x7fffffff;
1029 compr_img->index_table[i] = (off_t)index << ciso_hdr.align;
1030 if (plain)
1031 compr_img->index_table[i] |= OFF_T_MSB;
1032 }
1033
1034 return 0;
1035
1036fail_index:
1037 free(index_table);
1038fail_io:
1039 if (compr_img != NULL) {
1040 free(compr_img);
1041 compr_img = NULL;
1042 }
1043 return -1;
1044}
1045
1046#ifdef HAVE_CHD
1047static int handlechd(const char *isofile) {
1048 chd_img = calloc(1, sizeof(*chd_img));
1049 if (chd_img == NULL)
1050 goto fail_io;
1051
1052 if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE)
1053 goto fail_io;
1054
1055 chd_img->header = chd_get_header(chd_img->chd);
1056
1057 chd_img->buffer = malloc(chd_img->header->hunkbytes);
1058 if (chd_img->buffer == NULL)
1059 goto fail_io;
1060
1061 chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE);
1062 chd_img->current_hunk = (unsigned int)-1;
1063
1064 cddaBigEndian = TRUE;
1065
1066 numtracks = 0;
1067 int frame_offset = 150;
1068 memset(ti, 0, sizeof(ti));
1069
1070 while (1)
1071 {
1072 struct {
1073 char type[64];
1074 char subtype[32];
1075 char pgtype[32];
1076 char pgsub[32];
1077 uint32_t track;
1078 uint32_t frames;
1079 uint32_t pregap;
1080 uint32_t postgap;
1081 } md = {};
1082 char meta[256];
1083 uint32_t meta_size = 0;
1084
1085 if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
1086 sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap);
1087 else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
1088 sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames);
1089 else
1090 break;
1091
1092 ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA;
1093
1094 sec2msf(frame_offset + md.pregap, ti[md.track].start);
1095 sec2msf(md.frames - md.pregap, ti[md.track].length);
1096
1097 if (!strcmp(md.type, md.pgtype))
1098 frame_offset += md.pregap;
1099
1100 ti[md.track].start_offset = frame_offset * CD_FRAMESIZE_RAW;
1101
1102 frame_offset += md.frames;
1103 frame_offset += md.postgap;
1104 numtracks++;
1105 }
1106
1107 if (numtracks)
1108 return 0;
1109
1110fail_io:
1111 if (chd_img != NULL) {
1112 free(chd_img->buffer);
1113 free(chd_img);
1114 chd_img = NULL;
1115 }
1116 return -1;
1117}
1118#endif
1119
1120// this function tries to get the .sub file of the given .img
1121static int opensubfile(const char *isoname) {
1122 char subname[MAXPATHLEN];
1123
1124 // copy name of the iso and change extension from .img to .sub
1125 strncpy(subname, isoname, sizeof(subname));
1126 subname[MAXPATHLEN - 1] = '\0';
1127 if (strlen(subname) >= 4) {
1128 strcpy(subname + strlen(subname) - 4, ".sub");
1129 }
1130 else {
1131 return -1;
1132 }
1133
1134 subHandle = fopen(subname, "rb");
1135 if (subHandle == NULL) {
1136 return -1;
1137 }
1138
1139 return 0;
1140}
1141
1142static int opensbifile(const char *isoname) {
1143 char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0";
1144 int s;
1145
1146 strncpy(sbiname, isoname, sizeof(sbiname));
1147 sbiname[MAXPATHLEN - 1] = '\0';
1148 if (strlen(sbiname) >= 4) {
1149 if (cdrIsoMultidiskCount > 1) {
1150 sprintf(disknum, "_%i.sbi", cdrIsoMultidiskSelect + 1);
1151 strcpy(sbiname + strlen(sbiname) - 4, disknum);
1152 }
1153 else
1154 strcpy(sbiname + strlen(sbiname) - 4, ".sbi");
1155 }
1156 else {
1157 return -1;
1158 }
1159
1160 fseek(cdHandle, 0, SEEK_END);
1161 s = ftell(cdHandle) / 2352;
1162
1163 return LoadSBI(sbiname, s);
1164}
1165
1166static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector)
1167{
1168 fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET);
1169 return fread(dest, 1, CD_FRAMESIZE_RAW, f);
1170}
1171
1172static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)
1173{
1174 int ret;
1175
1176 fseek(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET);
1177 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1178 fread(subbuffer, 1, SUB_FRAMESIZE, f);
1179
1180 if (subChanRaw) DecodeRawSubData();
1181
1182 return ret;
1183}
1184
1185static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size)
1186{
1187 static z_stream z;
1188 int ret = 0;
1189
1190 if (z.zalloc == NULL) {
1191 // XXX: one-time leak here..
1192 z.next_in = Z_NULL;
1193 z.avail_in = 0;
1194 z.zalloc = Z_NULL;
1195 z.zfree = Z_NULL;
1196 z.opaque = Z_NULL;
1197 ret = inflateInit2(&z, -15);
1198 }
1199 else
1200 ret = inflateReset(&z);
1201 if (ret != Z_OK)
1202 return ret;
1203
1204 z.next_in = in;
1205 z.avail_in = in_size;
1206 z.next_out = out;
1207 z.avail_out = *out_size;
1208
1209 ret = inflate(&z, Z_NO_FLUSH);
1210 //inflateEnd(&z);
1211
1212 *out_size -= z.avail_out;
1213 return ret == 1 ? 0 : ret;
1214}
1215
1216static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)
1217{
1218 unsigned long cdbuffer_size, cdbuffer_size_expect;
1219 unsigned int size;
1220 int is_compressed;
1221 off_t start_byte;
1222 int ret, block;
1223
1224 if (base)
1225 sector += base / 2352;
1226
1227 block = sector >> compr_img->block_shift;
1228 compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1);
1229
1230 if (block == compr_img->current_block) {
1231 //printf("hit sect %d\n", sector);
1232 goto finish;
1233 }
1234
1235 if (sector >= compr_img->index_len * 16) {
1236 SysPrintf("sector %d is past img end\n", sector);
1237 return -1;
1238 }
1239
1240 start_byte = compr_img->index_table[block] & ~OFF_T_MSB;
1241 if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) {
1242 SysPrintf("seek error for block %d at %llx: ",
1243 block, (long long)start_byte);
1244 perror(NULL);
1245 return -1;
1246 }
1247
1248 is_compressed = !(compr_img->index_table[block] & OFF_T_MSB);
1249 size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte;
1250 if (size > sizeof(compr_img->buff_compressed)) {
1251 SysPrintf("block %d is too large: %u\n", block, size);
1252 return -1;
1253 }
1254
1255 if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0],
1256 1, size, cdHandle) != size) {
1257 SysPrintf("read error for block %d at %x: ", block, start_byte);
1258 perror(NULL);
1259 return -1;
1260 }
1261
1262 if (is_compressed) {
1263 cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift;
1264 cdbuffer_size = cdbuffer_size_expect;
1265 ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size);
1266 if (ret != 0) {
1267 SysPrintf("uncompress failed with %d for block %d, sector %d\n",
1268 ret, block, sector);
1269 return -1;
1270 }
1271 if (cdbuffer_size != cdbuffer_size_expect)
1272 SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size,
1273 cdbuffer_size_expect, sector);
1274 }
1275
1276 // done at last!
1277 compr_img->current_block = block;
1278
1279finish:
1280 if (dest != cdbuffer) // copy avoid HACK
1281 memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk],
1282 CD_FRAMESIZE_RAW);
1283 return CD_FRAMESIZE_RAW;
1284}
1285
1286#ifdef HAVE_CHD
1287static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector)
1288{
1289 int hunk;
1290
1291 if (base)
1292 sector += base / CD_FRAMESIZE_RAW;
1293
1294 hunk = sector / chd_img->sectors_per_hunk;
1295 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1296
1297 if (hunk == chd_img->current_hunk)
1298 goto finish;
1299
1300 chd_read(chd_img->chd, hunk, chd_img->buffer);
1301
1302 chd_img->current_hunk = hunk;
1303
1304finish:
1305 if (dest != cdbuffer) // copy avoid HACK
1306 memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk],
1307 CD_FRAMESIZE_RAW);
1308 return CD_FRAMESIZE_RAW;
1309}
1310#endif
1311static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector)
1312{
1313 int ret;
1314
1315 fseek(f, base + sector * 2048, SEEK_SET);
1316 ret = fread((char *)dest + 12 * 2, 1, 2048, f);
1317
1318 // not really necessary, fake mode 2 header
1319 memset(cdbuffer, 0, 12 * 2);
1320 sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]);
1321 cdbuffer[12 + 3] = 1;
1322
1323 return ret;
1324}
1325
1326static unsigned char * CALLBACK ISOgetBuffer_compr(void) {
1327 return compr_img->buff_raw[compr_img->sector_in_blk] + 12;
1328}
1329
1330#ifdef HAVE_CHD
1331static unsigned char * CALLBACK ISOgetBuffer_chd(void) {
1332 return chd_img->buffer[chd_img->sector_in_hunk] + 12;
1333}
1334#endif
1335
1336static unsigned char * CALLBACK ISOgetBuffer(void) {
1337 return cdbuffer + 12;
1338}
1339
1340static void PrintTracks(void) {
1341 int i;
1342
1343 for (i = 1; i <= numtracks; i++) {
1344 SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"),
1345 i, (ti[i].type == DATA ? "DATA" : "AUDIO"),
1346 ti[i].start[0], ti[i].start[1], ti[i].start[2],
1347 ti[i].length[0], ti[i].length[1], ti[i].length[2]);
1348 }
1349}
1350
1351// This function is invoked by the front-end when opening an ISO
1352// file for playback
1353static long CALLBACK ISOopen(void) {
1354 boolean isMode1ISO = FALSE;
1355 char alt_bin_filename[MAXPATHLEN];
1356 const char *bin_filename;
1357 char image_str[1024] = {0};
1358
1359 if (cdHandle != NULL) {
1360 return 0; // it's already open
1361 }
1362
1363 cdHandle = fopen(GetIsoFile(), "rb");
1364 if (cdHandle == NULL) {
1365 SysPrintf(_("Could't open '%s' for reading: %s\n"),
1366 GetIsoFile(), strerror(errno));
1367 return -1;
1368 }
1369
1370 sprintf(image_str, "Loaded CD Image: %s", GetIsoFile());
1371
1372 cddaBigEndian = FALSE;
1373 subChanMixed = FALSE;
1374 subChanRaw = FALSE;
1375 pregapOffset = 0;
1376 cdrIsoMultidiskCount = 1;
1377 multifile = 0;
1378
1379 CDR_getBuffer = ISOgetBuffer;
1380 cdimg_read_func = cdread_normal;
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 }
1410#endif
1411
1412 if (!subChanMixed && opensubfile(GetIsoFile()) == 0) {
1413 strcat(image_str, "[+sub]");
1414 }
1415 if (opensbifile(GetIsoFile()) == 0) {
1416 strcat(image_str, "[+sbi]");
1417 }
1418
1419 fseeko(cdHandle, 0, SEEK_END);
1420
1421 // maybe user selected metadata file instead of main .bin ..
1422 bin_filename = GetIsoFile();
1423 if (ftello(cdHandle) < 2352 * 0x10) {
1424 static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
1425 FILE *tmpf = NULL;
1426 size_t i;
1427 char *p;
1428
1429 strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename));
1430 alt_bin_filename[MAXPATHLEN - 1] = '\0';
1431 if (strlen(alt_bin_filename) >= 4) {
1432 p = alt_bin_filename + strlen(alt_bin_filename) - 4;
1433 for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
1434 strcpy(p, exts[i]);
1435 tmpf = fopen(alt_bin_filename, "rb");
1436 if (tmpf != NULL)
1437 break;
1438 }
1439 }
1440 if (tmpf != NULL) {
1441 bin_filename = alt_bin_filename;
1442 fclose(cdHandle);
1443 cdHandle = tmpf;
1444 fseeko(cdHandle, 0, SEEK_END);
1445 }
1446 }
1447
1448 // guess whether it is mode1/2048
1449 if (ftello(cdHandle) % 2048 == 0) {
1450 unsigned int modeTest = 0;
1451 fseek(cdHandle, 0, SEEK_SET);
1452 fread(&modeTest, 4, 1, cdHandle);
1453 if (SWAP32(modeTest) != 0xffffff00) {
1454 strcat(image_str, "[2048]");
1455 isMode1ISO = TRUE;
1456 }
1457 }
1458 fseek(cdHandle, 0, SEEK_SET);
1459
1460 SysPrintf("%s.\n", image_str);
1461
1462 PrintTracks();
1463
1464 if (subChanMixed)
1465 cdimg_read_func = cdread_sub_mixed;
1466 else if (isMode1ISO)
1467 cdimg_read_func = cdread_2048;
1468
1469 // make sure we have another handle open for cdda
1470 if (numtracks > 1 && ti[1].handle == NULL) {
1471 ti[1].handle = fopen(bin_filename, "rb");
1472 }
1473 cdda_cur_sector = 0;
1474 cdda_file_offset = 0;
1475
1476 return 0;
1477}
1478
1479static long CALLBACK ISOclose(void) {
1480 int i;
1481
1482 if (cdHandle != NULL) {
1483 fclose(cdHandle);
1484 cdHandle = NULL;
1485 }
1486 if (subHandle != NULL) {
1487 fclose(subHandle);
1488 subHandle = NULL;
1489 }
1490 stopCDDA();
1491 cddaHandle = NULL;
1492
1493 if (compr_img != NULL) {
1494 free(compr_img->index_table);
1495 free(compr_img);
1496 compr_img = NULL;
1497 }
1498
1499#ifdef HAVE_CHD
1500 if (chd_img != NULL) {
1501 chd_close(chd_img->chd);
1502 free(chd_img->buffer);
1503 free(chd_img);
1504 chd_img = NULL;
1505 }
1506#endif
1507
1508 for (i = 1; i <= numtracks; i++) {
1509 if (ti[i].handle != NULL) {
1510 fclose(ti[i].handle);
1511 ti[i].handle = NULL;
1512 }
1513 }
1514 numtracks = 0;
1515 ti[1].type = 0;
1516 UnloadSBI();
1517
1518 memset(cdbuffer, 0, sizeof(cdbuffer));
1519 CDR_getBuffer = ISOgetBuffer;
1520
1521 return 0;
1522}
1523
1524static long CALLBACK ISOinit(void) {
1525 assert(cdHandle == NULL);
1526 assert(subHandle == NULL);
1527
1528 return 0; // do nothing
1529}
1530
1531static long CALLBACK ISOshutdown(void) {
1532 ISOclose();
1533 return 0;
1534}
1535
1536// return Starting and Ending Track
1537// buffer:
1538// byte 0 - start track
1539// byte 1 - end track
1540static long CALLBACK ISOgetTN(unsigned char *buffer) {
1541 buffer[0] = 1;
1542
1543 if (numtracks > 0) {
1544 buffer[1] = numtracks;
1545 }
1546 else {
1547 buffer[1] = 1;
1548 }
1549
1550 return 0;
1551}
1552
1553// return Track Time
1554// buffer:
1555// byte 0 - frame
1556// byte 1 - second
1557// byte 2 - minute
1558static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) {
1559 if (track == 0) {
1560 unsigned int sect;
1561 unsigned char time[3];
1562 sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
1563 sec2msf(sect, (char *)time);
1564 buffer[2] = time[0];
1565 buffer[1] = time[1];
1566 buffer[0] = time[2];
1567 }
1568 else if (numtracks > 0 && track <= numtracks) {
1569 buffer[2] = ti[track].start[0];
1570 buffer[1] = ti[track].start[1];
1571 buffer[0] = ti[track].start[2];
1572 }
1573 else {
1574 buffer[2] = 0;
1575 buffer[1] = 2;
1576 buffer[0] = 0;
1577 }
1578
1579 return 0;
1580}
1581
1582// decode 'raw' subchannel data ripped by cdrdao
1583static void DecodeRawSubData(void) {
1584 unsigned char subQData[12];
1585 int i;
1586
1587 memset(subQData, 0, sizeof(subQData));
1588
1589 for (i = 0; i < 8 * 12; i++) {
1590 if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed
1591 subQData[i >> 3] |= (1 << (7 - (i & 7)));
1592 }
1593 }
1594
1595 memcpy(&subbuffer[12], subQData, 12);
1596}
1597
1598// read track
1599// time: byte 0 - minute; byte 1 - second; byte 2 - frame
1600// uses bcd format
1601static long CALLBACK ISOreadTrack(unsigned char *time) {
1602 int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2]));
1603 long ret;
1604
1605 if (cdHandle == NULL) {
1606 return -1;
1607 }
1608
1609 if (pregapOffset) {
1610 subChanMissing = FALSE;
1611 if (sector >= pregapOffset) {
1612 sector -= 2 * 75;
1613 if (sector < pregapOffset)
1614 subChanMissing = TRUE;
1615 }
1616 }
1617
1618 ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector);
1619 if (ret < 0)
1620 return -1;
1621
1622 if (subHandle != NULL) {
1623 fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET);
1624 fread(subbuffer, 1, SUB_FRAMESIZE, subHandle);
1625
1626 if (subChanRaw) DecodeRawSubData();
1627 }
1628
1629 return 0;
1630}
1631
1632// plays cdda audio
1633// sector: byte 0 - minute; byte 1 - second; byte 2 - frame
1634// does NOT uses bcd format
1635static long CALLBACK ISOplay(unsigned char *time) {
1636 unsigned int i;
1637
1638 if (numtracks <= 1)
1639 return 0;
1640
1641 // find the track
1642 cdda_cur_sector = msf2sec((char *)time);
1643 for (i = numtracks; i > 1; i--) {
1644 cdda_first_sector = msf2sec(ti[i].start);
1645 if (cdda_first_sector <= cdda_cur_sector + 2 * 75)
1646 break;
1647 }
1648 cdda_file_offset = ti[i].start_offset;
1649
1650 // find the file that contains this track
1651 for (; i > 1; i--)
1652 if (ti[i].handle != NULL)
1653 break;
1654
1655 cddaHandle = ti[i].handle;
1656
1657 if (SPU_playCDDAchannel != NULL)
1658 startCDDA();
1659
1660 return 0;
1661}
1662
1663// stops cdda audio
1664static long CALLBACK ISOstop(void) {
1665 stopCDDA();
1666 return 0;
1667}
1668
1669// gets subchannel data
1670static unsigned char* CALLBACK ISOgetBufferSub(void) {
1671 if ((subHandle != NULL || subChanMixed) && !subChanMissing) {
1672 return subbuffer;
1673 }
1674
1675 return NULL;
1676}
1677
1678static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
1679 u32 sect;
1680
1681 CDR__getStatus(stat);
1682
1683 if (playing) {
1684 stat->Type = 0x02;
1685 stat->Status |= 0x80;
1686 }
1687 else {
1688 // BIOS - boot ID (CD type)
1689 stat->Type = ti[1].type;
1690 }
1691
1692 // relative -> absolute time
1693 sect = cddaCurPos;
1694 sec2msf(sect, (char *)stat->Time);
1695
1696 return 0;
1697}
1698
1699// read CDDA sector into buffer
1700long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) {
1701 unsigned char msf[3] = {m, s, f};
1702 unsigned int file, track, track_start = 0;
1703 int ret;
1704
1705 cddaCurPos = msf2sec((char *)msf);
1706
1707 // find current track index
1708 for (track = numtracks; ; track--) {
1709 track_start = msf2sec(ti[track].start);
1710 if (track_start <= cddaCurPos)
1711 break;
1712 if (track == 1)
1713 break;
1714 }
1715
1716 // data tracks play silent
1717 if (ti[track].type != CDDA) {
1718 memset(buffer, 0, CD_FRAMESIZE_RAW);
1719 return 0;
1720 }
1721
1722 file = 1;
1723 if (multifile) {
1724 // find the file that contains this track
1725 for (file = track; file > 1; file--)
1726 if (ti[file].handle != NULL)
1727 break;
1728 }
1729
1730 ret = cdimg_read_func(ti[file].handle, ti[track].start_offset,
1731 buffer, cddaCurPos - track_start);
1732 if (ret != CD_FRAMESIZE_RAW) {
1733 memset(buffer, 0, CD_FRAMESIZE_RAW);
1734 return -1;
1735 }
1736
1737 if (cddaBigEndian) {
1738 int i;
1739 unsigned char tmp;
1740
1741 for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) {
1742 tmp = buffer[i * 2];
1743 buffer[i * 2] = buffer[i * 2 + 1];
1744 buffer[i * 2 + 1] = tmp;
1745 }
1746 }
1747
1748 return 0;
1749}
1750
1751void cdrIsoInit(void) {
1752 CDR_init = ISOinit;
1753 CDR_shutdown = ISOshutdown;
1754 CDR_open = ISOopen;
1755 CDR_close = ISOclose;
1756 CDR_getTN = ISOgetTN;
1757 CDR_getTD = ISOgetTD;
1758 CDR_readTrack = ISOreadTrack;
1759 CDR_getBuffer = ISOgetBuffer;
1760 CDR_play = ISOplay;
1761 CDR_stop = ISOstop;
1762 CDR_getBufferSub = ISOgetBufferSub;
1763 CDR_getStatus = ISOgetStatus;
1764 CDR_readCDDA = ISOreadCDDA;
1765
1766 CDR_getDriveLetter = CDR__getDriveLetter;
1767 CDR_configure = CDR__configure;
1768 CDR_test = CDR__test;
1769 CDR_about = CDR__about;
1770 CDR_setfilename = CDR__setfilename;
1771
1772 numtracks = 0;
1773}
1774
1775int cdrIsoActive(void) {
1776 return (cdHandle != NULL);
1777}
ARM optimized PCSX fork