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cdrom: change GetlocP handling
[pcsx_rearmed.git] / libpcsxcore / cdriso.c
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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 WIN32_LEAN_AND_MEAN
30#include <process.h>
31#include <windows.h>
32#define strcasecmp _stricmp
33#define usleep(x) Sleep((x) / 1000)
34#else
35#include <pthread.h>
36#include <sys/time.h>
37#include <unistd.h>
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)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE];
87 chd_file* chd;
88 const chd_header* header;
89 unsigned int sectors_per_hunk;
90 unsigned int current_hunk;
91 unsigned int sector_in_hunk;
92} *chd_img;
93#endif
94
95static int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
96static int (*cdimg_read_sub_func)(FILE *f, int sector);
97
98char* CALLBACK CDR__getDriveLetter(void);
99long CALLBACK CDR__configure(void);
100long CALLBACK CDR__test(void);
101void CALLBACK CDR__about(void);
102long CALLBACK CDR__setfilename(char *filename);
103long CALLBACK CDR__getStatus(struct CdrStat *stat);
104
105static void DecodeRawSubData(void);
106
107struct trackinfo {
108 enum {DATA=1, CDDA} type;
109 char start[3]; // MSF-format
110 char length[3]; // MSF-format
111 FILE *handle; // for multi-track images CDDA
112 unsigned int start_offset; // byte offset from start of above file
113};
114
115#define MAXTRACKS 100 /* How many tracks can a CD hold? */
116
117static int numtracks = 0;
118static struct trackinfo ti[MAXTRACKS];
119
120// get a sector from a msf-array
121static unsigned int msf2sec(char *msf) {
122 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
123}
124
125static void sec2msf(unsigned int s, char *msf) {
126 msf[0] = s / 75 / 60;
127 s = s - msf[0] * 75 * 60;
128 msf[1] = s / 75;
129 s = s - msf[1] * 75;
130 msf[2] = s;
131}
132
133// divide a string of xx:yy:zz into m, s, f
134static void tok2msf(char *time, char *msf) {
135 char *token;
136
137 token = strtok(time, ":");
138 if (token) {
139 msf[0] = atoi(token);
140 }
141 else {
142 msf[0] = 0;
143 }
144
145 token = strtok(NULL, ":");
146 if (token) {
147 msf[1] = atoi(token);
148 }
149 else {
150 msf[1] = 0;
151 }
152
153 token = strtok(NULL, ":");
154 if (token) {
155 msf[2] = atoi(token);
156 }
157 else {
158 msf[2] = 0;
159 }
160}
161
162// this function tries to get the .toc file of the given .bin
163// the necessary data is put into the ti (trackinformation)-array
164static int parsetoc(const char *isofile) {
165 char tocname[MAXPATHLEN];
166 FILE *fi;
167 char linebuf[256], tmp[256], name[256];
168 char *token;
169 char time[20], time2[20];
170 unsigned int t, sector_offs, sector_size;
171 unsigned int current_zero_gap = 0;
172
173 numtracks = 0;
174
175 // copy name of the iso and change extension from .bin to .toc
176 strncpy(tocname, isofile, sizeof(tocname));
177 tocname[MAXPATHLEN - 1] = '\0';
178 if (strlen(tocname) >= 4) {
179 strcpy(tocname + strlen(tocname) - 4, ".toc");
180 }
181 else {
182 return -1;
183 }
184
185 if ((fi = fopen(tocname, "r")) == NULL) {
186 // try changing extension to .cue (to satisfy some stupid tutorials)
187 strcpy(tocname + strlen(tocname) - 4, ".cue");
188 if ((fi = fopen(tocname, "r")) == NULL) {
189 // if filename is image.toc.bin, try removing .bin (for Brasero)
190 strcpy(tocname, isofile);
191 t = strlen(tocname);
192 if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) {
193 tocname[t - 4] = '\0';
194 if ((fi = fopen(tocname, "r")) == NULL) {
195 return -1;
196 }
197 }
198 else {
199 return -1;
200 }
201 }
202 // check if it's really a TOC named as a .cue
203 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
204 token = strtok(linebuf, " ");
205 if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) {
206 fclose(fi);
207 return -1;
208 }
209 }
210 fseek(fi, 0, SEEK_SET);
211 }
212
213 memset(&ti, 0, sizeof(ti));
214 cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio
215
216 sector_size = CD_FRAMESIZE_RAW;
217 sector_offs = 2 * 75;
218
219 // parse the .toc file
220 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
221 // search for tracks
222 strncpy(tmp, linebuf, sizeof(linebuf));
223 token = strtok(tmp, " ");
224
225 if (token == NULL) continue;
226
227 if (!strcmp(token, "TRACK")) {
228 sector_offs += current_zero_gap;
229 current_zero_gap = 0;
230
231 // get type of track
232 token = strtok(NULL, " ");
233 numtracks++;
234
235 if (!strncmp(token, "MODE2_RAW", 9)) {
236 ti[numtracks].type = DATA;
237 sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0
238
239 // check if this image contains mixed subchannel data
240 token = strtok(NULL, " ");
241 if (token != NULL && !strncmp(token, "RW", 2)) {
242 sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE;
243 subChanMixed = TRUE;
244 if (!strncmp(token, "RW_RAW", 6))
245 subChanRaw = TRUE;
246 }
247 }
248 else if (!strncmp(token, "AUDIO", 5)) {
249 ti[numtracks].type = CDDA;
250 }
251 }
252 else if (!strcmp(token, "DATAFILE")) {
253 if (ti[numtracks].type == CDDA) {
254 sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2);
255 ti[numtracks].start_offset = t;
256 t = t / sector_size + sector_offs;
257 sec2msf(t, (char *)&ti[numtracks].start);
258 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
259 }
260 else {
261 sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time);
262 tok2msf((char *)&time, (char *)&ti[numtracks].length);
263 }
264 }
265 else if (!strcmp(token, "FILE")) {
266 sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2);
267 tok2msf((char *)&time, (char *)&ti[numtracks].start);
268 t += msf2sec(ti[numtracks].start) * sector_size;
269 ti[numtracks].start_offset = t;
270 t = t / sector_size + sector_offs;
271 sec2msf(t, (char *)&ti[numtracks].start);
272 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
273 }
274 else if (!strcmp(token, "ZERO") || !strcmp(token, "SILENCE")) {
275 // skip unneeded optional fields
276 while (token != NULL) {
277 token = strtok(NULL, " ");
278 if (strchr(token, ':') != NULL)
279 break;
280 }
281 if (token != NULL) {
282 tok2msf(token, tmp);
283 current_zero_gap = msf2sec(tmp);
284 }
285 if (numtracks > 1) {
286 t = ti[numtracks - 1].start_offset;
287 t /= sector_size;
288 pregapOffset = t + msf2sec(ti[numtracks - 1].length);
289 }
290 }
291 else if (!strcmp(token, "START")) {
292 token = strtok(NULL, " ");
293 if (token != NULL && strchr(token, ':')) {
294 tok2msf(token, tmp);
295 t = msf2sec(tmp);
296 ti[numtracks].start_offset += (t - current_zero_gap) * sector_size;
297 t = msf2sec(ti[numtracks].start) + t;
298 sec2msf(t, (char *)&ti[numtracks].start);
299 }
300 }
301 }
302
303 fclose(fi);
304
305 return 0;
306}
307
308// this function tries to get the .cue file of the given .bin
309// the necessary data is put into the ti (trackinformation)-array
310static int parsecue(const char *isofile) {
311 char cuename[MAXPATHLEN];
312 char filepath[MAXPATHLEN];
313 char *incue_fname;
314 FILE *fi;
315 char *token;
316 char time[20];
317 char *tmp;
318 char linebuf[256], tmpb[256], dummy[256];
319 unsigned int incue_max_len;
320 unsigned int t, file_len, mode, sector_offs;
321 unsigned int sector_size = 2352;
322
323 numtracks = 0;
324
325 // copy name of the iso and change extension from .bin to .cue
326 strncpy(cuename, isofile, sizeof(cuename));
327 cuename[MAXPATHLEN - 1] = '\0';
328 if (strlen(cuename) >= 4) {
329 // If 'isofile' is a '.cd<X>' file, use it as a .cue file
330 // and don't try to search the additional .cue file
331 if (strncasecmp(cuename + strlen(cuename) - 4, ".cd", 3) != 0 )
332 strcpy(cuename + strlen(cuename) - 4, ".cue");
333 }
334 else {
335 return -1;
336 }
337
338 if ((fi = fopen(cuename, "r")) == NULL) {
339 return -1;
340 }
341
342 // Some stupid tutorials wrongly tell users to use cdrdao to rip a
343 // "bin/cue" image, which is in fact a "bin/toc" image. So let's check
344 // that...
345 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
346 if (!strncmp(linebuf, "CD_ROM_XA", 9)) {
347 // Don't proceed further, as this is actually a .toc file rather
348 // than a .cue file.
349 fclose(fi);
350 return parsetoc(isofile);
351 }
352 fseek(fi, 0, SEEK_SET);
353 }
354
355 // build a path for files referenced in .cue
356 strncpy(filepath, cuename, sizeof(filepath));
357 tmp = strrchr(filepath, '/');
358 if (tmp == NULL)
359 tmp = strrchr(filepath, '\\');
360 if (tmp != NULL)
361 tmp++;
362 else
363 tmp = filepath;
364 *tmp = 0;
365 filepath[sizeof(filepath) - 1] = 0;
366 incue_fname = tmp;
367 incue_max_len = sizeof(filepath) - (tmp - filepath) - 1;
368
369 memset(&ti, 0, sizeof(ti));
370
371 file_len = 0;
372 sector_offs = 2 * 75;
373
374 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
375 strncpy(dummy, linebuf, sizeof(linebuf));
376 token = strtok(dummy, " ");
377
378 if (token == NULL) {
379 continue;
380 }
381
382 if (!strcmp(token, "TRACK")) {
383 numtracks++;
384
385 sector_size = 0;
386 if (strstr(linebuf, "AUDIO") != NULL) {
387 ti[numtracks].type = CDDA;
388 sector_size = 2352;
389 }
390 else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, &sector_size) == 3)
391 ti[numtracks].type = DATA;
392 else {
393 SysPrintf(".cue: failed to parse TRACK\n");
394 ti[numtracks].type = numtracks == 1 ? DATA : CDDA;
395 }
396 if (sector_size == 0)
397 sector_size = 2352;
398 }
399 else if (!strcmp(token, "INDEX")) {
400 if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2)
401 SysPrintf(".cue: failed to parse INDEX\n");
402 tok2msf(time, (char *)&ti[numtracks].start);
403
404 t = msf2sec(ti[numtracks].start);
405 ti[numtracks].start_offset = t * sector_size;
406 t += sector_offs;
407 sec2msf(t, ti[numtracks].start);
408
409 // default track length to file length
410 t = file_len - ti[numtracks].start_offset / sector_size;
411 sec2msf(t, ti[numtracks].length);
412
413 if (numtracks > 1 && ti[numtracks].handle == NULL) {
414 // this track uses the same file as the last,
415 // start of this track is last track's end
416 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
417 sec2msf(t, ti[numtracks - 1].length);
418 }
419 if (numtracks > 1 && pregapOffset == -1)
420 pregapOffset = ti[numtracks].start_offset / sector_size;
421 }
422 else if (!strcmp(token, "PREGAP")) {
423 if (sscanf(linebuf, " PREGAP %8s", time) == 1) {
424 tok2msf(time, dummy);
425 sector_offs += msf2sec(dummy);
426 }
427 pregapOffset = -1; // mark to fill track start_offset
428 }
429 else if (!strcmp(token, "FILE")) {
430 t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb);
431 if (t != 1)
432 sscanf(linebuf, " FILE %255s", tmpb);
433
434 // absolute path?
435 ti[numtracks + 1].handle = fopen(tmpb, "rb");
436 if (ti[numtracks + 1].handle == NULL) {
437 // relative to .cue?
438 tmp = strrchr(tmpb, '\\');
439 if (tmp == NULL)
440 tmp = strrchr(tmpb, '/');
441 if (tmp != NULL)
442 tmp++;
443 else
444 tmp = tmpb;
445 strncpy(incue_fname, tmp, incue_max_len);
446 ti[numtracks + 1].handle = fopen(filepath, "rb");
447 }
448
449 // update global offset if this is not first file in this .cue
450 if (numtracks + 1 > 1) {
451 multifile = 1;
452 sector_offs += file_len;
453 }
454
455 file_len = 0;
456 if (ti[numtracks + 1].handle == NULL) {
457 SysPrintf(_("\ncould not open: %s\n"), filepath);
458 continue;
459 }
460 fseek(ti[numtracks + 1].handle, 0, SEEK_END);
461 file_len = ftell(ti[numtracks + 1].handle) / 2352;
462
463 if (numtracks == 0 && strlen(isofile) >= 4 &&
464 (strcmp(isofile + strlen(isofile) - 4, ".cue") == 0 ||
465 strncasecmp(isofile + strlen(isofile) - 4, ".cd", 3) == 0)) {
466 // user selected .cue/.cdX as image file, use it's data track instead
467 fclose(cdHandle);
468 cdHandle = fopen(filepath, "rb");
469 }
470 }
471 }
472
473 fclose(fi);
474
475 // if there are no tracks detected, then it's not a cue file
476 if (!numtracks)
477 return -1;
478
479 return 0;
480}
481
482// this function tries to get the .ccd file of the given .img
483// the necessary data is put into the ti (trackinformation)-array
484static int parseccd(const char *isofile) {
485 char ccdname[MAXPATHLEN];
486 FILE *fi;
487 char linebuf[256];
488 unsigned int t;
489
490 numtracks = 0;
491
492 // copy name of the iso and change extension from .img to .ccd
493 strncpy(ccdname, isofile, sizeof(ccdname));
494 ccdname[MAXPATHLEN - 1] = '\0';
495 if (strlen(ccdname) >= 4) {
496 strcpy(ccdname + strlen(ccdname) - 4, ".ccd");
497 }
498 else {
499 return -1;
500 }
501
502 if ((fi = fopen(ccdname, "r")) == NULL) {
503 return -1;
504 }
505
506 memset(&ti, 0, sizeof(ti));
507
508 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
509 if (!strncmp(linebuf, "[TRACK", 6)){
510 numtracks++;
511 }
512 else if (!strncmp(linebuf, "MODE=", 5)) {
513 sscanf(linebuf, "MODE=%d", &t);
514 ti[numtracks].type = ((t == 0) ? CDDA : DATA);
515 }
516 else if (!strncmp(linebuf, "INDEX 1=", 8)) {
517 sscanf(linebuf, "INDEX 1=%d", &t);
518 sec2msf(t + 2 * 75, ti[numtracks].start);
519 ti[numtracks].start_offset = t * 2352;
520
521 // If we've already seen another track, this is its end
522 if (numtracks > 1) {
523 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
524 sec2msf(t, ti[numtracks - 1].length);
525 }
526 }
527 }
528
529 fclose(fi);
530
531 // Fill out the last track's end based on size
532 if (numtracks >= 1) {
533 fseek(cdHandle, 0, SEEK_END);
534 t = ftell(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75;
535 sec2msf(t, ti[numtracks].length);
536 }
537
538 return 0;
539}
540
541// this function tries to get the .mds file of the given .mdf
542// the necessary data is put into the ti (trackinformation)-array
543static int parsemds(const char *isofile) {
544 char mdsname[MAXPATHLEN];
545 FILE *fi;
546 unsigned int offset, extra_offset, l, i;
547 unsigned short s;
548
549 numtracks = 0;
550
551 // copy name of the iso and change extension from .mdf to .mds
552 strncpy(mdsname, isofile, sizeof(mdsname));
553 mdsname[MAXPATHLEN - 1] = '\0';
554 if (strlen(mdsname) >= 4) {
555 strcpy(mdsname + strlen(mdsname) - 4, ".mds");
556 }
557 else {
558 return -1;
559 }
560
561 if ((fi = fopen(mdsname, "rb")) == NULL) {
562 return -1;
563 }
564
565 memset(&ti, 0, sizeof(ti));
566
567 // check if it's a valid mds file
568 if (fread(&i, 1, sizeof(i), fi) != sizeof(i))
569 goto fail_io;
570 i = SWAP32(i);
571 if (i != 0x4944454D) {
572 // not an valid mds file
573 fclose(fi);
574 return -1;
575 }
576
577 // get offset to session block
578 fseek(fi, 0x50, SEEK_SET);
579 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
580 goto fail_io;
581 offset = SWAP32(offset);
582
583 // get total number of tracks
584 offset += 14;
585 fseek(fi, offset, SEEK_SET);
586 if (fread(&s, 1, sizeof(s), fi) != sizeof(s))
587 goto fail_io;
588 s = SWAP16(s);
589 numtracks = s;
590
591 // get offset to track blocks
592 fseek(fi, 4, SEEK_CUR);
593 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
594 goto fail_io;
595 offset = SWAP32(offset);
596
597 // skip lead-in data
598 while (1) {
599 fseek(fi, offset + 4, SEEK_SET);
600 if (fgetc(fi) < 0xA0) {
601 break;
602 }
603 offset += 0x50;
604 }
605
606 // check if the image contains mixed subchannel data
607 fseek(fi, offset + 1, SEEK_SET);
608 subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE);
609
610 // read track data
611 for (i = 1; i <= numtracks; i++) {
612 fseek(fi, offset, SEEK_SET);
613
614 // get the track type
615 ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA);
616 fseek(fi, 8, SEEK_CUR);
617
618 // get the track starting point
619 ti[i].start[0] = fgetc(fi);
620 ti[i].start[1] = fgetc(fi);
621 ti[i].start[2] = fgetc(fi);
622
623 if (fread(&extra_offset, 1, sizeof(extra_offset), fi) != sizeof(extra_offset))
624 goto fail_io;
625 extra_offset = SWAP32(extra_offset);
626
627 // get track start offset (in .mdf)
628 fseek(fi, offset + 0x28, SEEK_SET);
629 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
630 goto fail_io;
631 l = SWAP32(l);
632 ti[i].start_offset = l;
633
634 // get pregap
635 fseek(fi, extra_offset, SEEK_SET);
636 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
637 goto fail_io;
638 l = SWAP32(l);
639 if (l != 0 && i > 1)
640 pregapOffset = msf2sec(ti[i].start);
641
642 // get the track length
643 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
644 goto fail_io;
645 l = SWAP32(l);
646 sec2msf(l, ti[i].length);
647
648 offset += 0x50;
649 }
650 fclose(fi);
651 return 0;
652fail_io:
653#ifndef NDEBUG
654 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
655#endif
656 fclose(fi);
657 return -1;
658}
659
660static int handlepbp(const char *isofile) {
661 struct {
662 unsigned int sig;
663 unsigned int dontcare[8];
664 unsigned int psar_offs;
665 } pbp_hdr;
666 struct {
667 unsigned char type;
668 unsigned char pad0;
669 unsigned char track;
670 char index0[3];
671 char pad1;
672 char index1[3];
673 } toc_entry;
674 struct {
675 unsigned int offset;
676 unsigned int size;
677 unsigned int dontcare[6];
678 } index_entry;
679 char psar_sig[11];
680 off_t psisoimg_offs, cdimg_base;
681 unsigned int t, cd_length;
682 unsigned int offsettab[8];
683 unsigned int psar_offs, index_entry_size, index_entry_offset;
684 const char *ext = NULL;
685 int i, ret;
686
687 if (strlen(isofile) >= 4)
688 ext = isofile + strlen(isofile) - 4;
689 if (ext == NULL || (strcmp(ext, ".pbp") != 0 && strcmp(ext, ".PBP") != 0))
690 return -1;
691
692 fseeko(cdHandle, 0, SEEK_SET);
693
694 numtracks = 0;
695
696 ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle);
697 if (ret != sizeof(pbp_hdr)) {
698 SysPrintf("failed to read pbp\n");
699 goto fail_io;
700 }
701
702 psar_offs = SWAP32(pbp_hdr.psar_offs);
703
704 ret = fseeko(cdHandle, psar_offs, SEEK_SET);
705 if (ret != 0) {
706 SysPrintf("failed to seek to %x\n", psar_offs);
707 goto fail_io;
708 }
709
710 psisoimg_offs = psar_offs;
711 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
712 goto fail_io;
713 psar_sig[10] = 0;
714 if (strcmp(psar_sig, "PSTITLEIMG") == 0) {
715 // multidisk image?
716 ret = fseeko(cdHandle, psar_offs + 0x200, SEEK_SET);
717 if (ret != 0) {
718 SysPrintf("failed to seek to %x\n", psar_offs + 0x200);
719 goto fail_io;
720 }
721
722 if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) {
723 SysPrintf("failed to read offsettab\n");
724 goto fail_io;
725 }
726
727 for (i = 0; i < sizeof(offsettab) / sizeof(offsettab[0]); i++) {
728 if (offsettab[i] == 0)
729 break;
730 }
731 cdrIsoMultidiskCount = i;
732 if (cdrIsoMultidiskCount == 0) {
733 SysPrintf("multidisk eboot has 0 images?\n");
734 goto fail_io;
735 }
736
737 if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount)
738 cdrIsoMultidiskSelect = 0;
739
740 psisoimg_offs += SWAP32(offsettab[cdrIsoMultidiskSelect]);
741
742 ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET);
743 if (ret != 0) {
744 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs);
745 goto fail_io;
746 }
747
748 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
749 goto fail_io;
750 psar_sig[10] = 0;
751 }
752
753 if (strcmp(psar_sig, "PSISOIMG00") != 0) {
754 SysPrintf("bad psar_sig: %s\n", psar_sig);
755 goto fail_io;
756 }
757
758 // seek to TOC
759 ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET);
760 if (ret != 0) {
761 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800);
762 goto fail_io;
763 }
764
765 // first 3 entries are special
766 fseek(cdHandle, sizeof(toc_entry), SEEK_CUR);
767 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
768 goto fail_io;
769 numtracks = btoi(toc_entry.index1[0]);
770
771 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
772 goto fail_io;
773 cd_length = btoi(toc_entry.index1[0]) * 60 * 75 +
774 btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]);
775
776 for (i = 1; i <= numtracks; i++) {
777 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
778 goto fail_io;
779
780 ti[i].type = (toc_entry.type == 1) ? CDDA : DATA;
781
782 ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 +
783 btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]);
784 ti[i].start_offset *= 2352;
785 ti[i].start[0] = btoi(toc_entry.index1[0]);
786 ti[i].start[1] = btoi(toc_entry.index1[1]);
787 ti[i].start[2] = btoi(toc_entry.index1[2]);
788
789 if (i > 1) {
790 t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start);
791 sec2msf(t, ti[i - 1].length);
792 }
793 }
794 t = cd_length - ti[numtracks].start_offset / 2352;
795 sec2msf(t, ti[numtracks].length);
796
797 // seek to ISO index
798 ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET);
799 if (ret != 0) {
800 SysPrintf("failed to seek to ISO index\n");
801 goto fail_io;
802 }
803
804 compr_img = calloc(1, sizeof(*compr_img));
805 if (compr_img == NULL)
806 goto fail_io;
807
808 compr_img->block_shift = 4;
809 compr_img->current_block = (unsigned int)-1;
810
811 compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry);
812 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
813 if (compr_img->index_table == NULL)
814 goto fail_io;
815
816 cdimg_base = psisoimg_offs + 0x100000;
817 for (i = 0; i < compr_img->index_len; i++) {
818 ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle);
819 if (ret != sizeof(index_entry)) {
820 SysPrintf("failed to read index_entry #%d\n", i);
821 goto fail_index;
822 }
823
824 index_entry_size = SWAP32(index_entry.size);
825 index_entry_offset = SWAP32(index_entry.offset);
826
827 if (index_entry_size == 0)
828 break;
829
830 compr_img->index_table[i] = cdimg_base + index_entry_offset;
831 }
832 compr_img->index_table[i] = cdimg_base + index_entry_offset + index_entry_size;
833
834 return 0;
835
836fail_index:
837 free(compr_img->index_table);
838 compr_img->index_table = NULL;
839 goto done;
840
841fail_io:
842#ifndef NDEBUG
843 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
844#endif
845
846done:
847 if (compr_img != NULL) {
848 free(compr_img);
849 compr_img = NULL;
850 }
851 return -1;
852}
853
854static int handlecbin(const char *isofile) {
855 struct
856 {
857 char magic[4];
858 unsigned int header_size;
859 unsigned long long total_bytes;
860 unsigned int block_size;
861 unsigned char ver; // 1
862 unsigned char align;
863 unsigned char rsv_06[2];
864 } ciso_hdr;
865 const char *ext = NULL;
866 unsigned int *index_table = NULL;
867 unsigned int index = 0, plain;
868 int i, ret;
869
870 if (strlen(isofile) >= 5)
871 ext = isofile + strlen(isofile) - 5;
872 if (ext == NULL || (strcasecmp(ext + 1, ".cbn") != 0 && strcasecmp(ext, ".cbin") != 0))
873 return -1;
874
875 fseek(cdHandle, 0, SEEK_SET);
876
877 ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle);
878 if (ret != sizeof(ciso_hdr)) {
879 SysPrintf("failed to read ciso header\n");
880 return -1;
881 }
882
883 if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) {
884 SysPrintf("bad ciso header\n");
885 return -1;
886 }
887 if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) {
888 ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET);
889 if (ret != 0) {
890 SysPrintf("failed to seek to %x\n", ciso_hdr.header_size);
891 return -1;
892 }
893 }
894
895 compr_img = calloc(1, sizeof(*compr_img));
896 if (compr_img == NULL)
897 goto fail_io;
898
899 compr_img->block_shift = 0;
900 compr_img->current_block = (unsigned int)-1;
901
902 compr_img->index_len = ciso_hdr.total_bytes / ciso_hdr.block_size;
903 index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0]));
904 if (index_table == NULL)
905 goto fail_io;
906
907 ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle);
908 if (ret != compr_img->index_len) {
909 SysPrintf("failed to read index table\n");
910 goto fail_index;
911 }
912
913 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
914 if (compr_img->index_table == NULL)
915 goto fail_index;
916
917 for (i = 0; i < compr_img->index_len + 1; i++) {
918 index = index_table[i];
919 plain = index & 0x80000000;
920 index &= 0x7fffffff;
921 compr_img->index_table[i] = (off_t)index << ciso_hdr.align;
922 if (plain)
923 compr_img->index_table[i] |= OFF_T_MSB;
924 }
925
926 return 0;
927
928fail_index:
929 free(index_table);
930fail_io:
931 if (compr_img != NULL) {
932 free(compr_img);
933 compr_img = NULL;
934 }
935 return -1;
936}
937
938#ifdef HAVE_CHD
939static int handlechd(const char *isofile) {
940 int frame_offset = 150;
941 int file_offset = 0;
942
943 chd_img = calloc(1, sizeof(*chd_img));
944 if (chd_img == NULL)
945 goto fail_io;
946
947 if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE)
948 goto fail_io;
949
950 if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE))
951 goto fail_io;
952
953 chd_img->header = chd_get_header(chd_img->chd);
954
955 chd_img->buffer = malloc(chd_img->header->hunkbytes);
956 if (chd_img->buffer == NULL)
957 goto fail_io;
958
959 chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE);
960 chd_img->current_hunk = (unsigned int)-1;
961
962 cddaBigEndian = TRUE;
963
964 numtracks = 0;
965 memset(ti, 0, sizeof(ti));
966
967 while (1)
968 {
969 struct {
970 char type[64];
971 char subtype[32];
972 char pgtype[32];
973 char pgsub[32];
974 uint32_t track;
975 uint32_t frames;
976 uint32_t pregap;
977 uint32_t postgap;
978 } md = {};
979 char meta[256];
980 uint32_t meta_size = 0;
981
982 if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
983 sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap);
984 else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
985 sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames);
986 else
987 break;
988
989 SysPrintf("chd: %s\n", meta);
990
991 if (md.track == 1) {
992 if (!strncmp(md.subtype, "RW", 2)) {
993 subChanMixed = TRUE;
994 if (!strcmp(md.subtype, "RW_RAW"))
995 subChanRaw = TRUE;
996 }
997 }
998
999 ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA;
1000
1001 sec2msf(frame_offset + md.pregap, ti[md.track].start);
1002 sec2msf(md.frames, ti[md.track].length);
1003
1004 ti[md.track].start_offset = file_offset + md.pregap;
1005
1006 // XXX: what about postgap?
1007 frame_offset += md.frames;
1008 file_offset += md.frames;
1009 numtracks++;
1010 }
1011
1012 if (numtracks)
1013 return 0;
1014
1015fail_io:
1016 if (chd_img != NULL) {
1017 free(chd_img->buffer);
1018 free(chd_img);
1019 chd_img = NULL;
1020 }
1021 return -1;
1022}
1023#endif
1024
1025// this function tries to get the .sub file of the given .img
1026static int opensubfile(const char *isoname) {
1027 char subname[MAXPATHLEN];
1028
1029 // copy name of the iso and change extension from .img to .sub
1030 strncpy(subname, isoname, sizeof(subname));
1031 subname[MAXPATHLEN - 1] = '\0';
1032 if (strlen(subname) >= 4) {
1033 strcpy(subname + strlen(subname) - 4, ".sub");
1034 }
1035 else {
1036 return -1;
1037 }
1038
1039 subHandle = fopen(subname, "rb");
1040 if (subHandle == NULL) {
1041 return -1;
1042 }
1043
1044 return 0;
1045}
1046
1047static int opensbifile(const char *isoname) {
1048 char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0";
1049 int s;
1050
1051 strncpy(sbiname, isoname, sizeof(sbiname));
1052 sbiname[MAXPATHLEN - 1] = '\0';
1053 if (strlen(sbiname) >= 4) {
1054 if (cdrIsoMultidiskCount > 1) {
1055 sprintf(disknum, "_%i.sbi", cdrIsoMultidiskSelect + 1);
1056 strcpy(sbiname + strlen(sbiname) - 4, disknum);
1057 }
1058 else
1059 strcpy(sbiname + strlen(sbiname) - 4, ".sbi");
1060 }
1061 else {
1062 return -1;
1063 }
1064
1065 fseek(cdHandle, 0, SEEK_END);
1066 s = ftell(cdHandle) / 2352;
1067
1068 return LoadSBI(sbiname, s);
1069}
1070
1071static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector)
1072{
1073 int ret;
1074 if (fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET))
1075 goto fail_io;
1076 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1077 if (ret <= 0)
1078 goto fail_io;
1079 return ret;
1080
1081fail_io:
1082 // often happens in cdda gaps of a split cue/bin, so not logged
1083 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1084 return -1;
1085}
1086
1087static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)
1088{
1089 int ret;
1090
1091 if (fseek(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET))
1092 goto fail_io;
1093 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1094 if (ret <= 0)
1095 goto fail_io;
1096 return ret;
1097
1098fail_io:
1099 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1100 return -1;
1101}
1102
1103static int cdread_sub_sub_mixed(FILE *f, int sector)
1104{
1105 if (fseek(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + CD_FRAMESIZE_RAW, SEEK_SET))
1106 goto fail_io;
1107 if (fread(subbuffer, 1, SUB_FRAMESIZE, f) != SUB_FRAMESIZE)
1108 goto fail_io;
1109
1110 return SUB_FRAMESIZE;
1111
1112fail_io:
1113 SysPrintf("subchannel: file IO error %d, sector %u\n", errno, sector);
1114 return -1;
1115}
1116
1117static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size)
1118{
1119 static z_stream z;
1120 int ret = 0;
1121
1122 if (z.zalloc == NULL) {
1123 // XXX: one-time leak here..
1124 z.next_in = Z_NULL;
1125 z.avail_in = 0;
1126 z.zalloc = Z_NULL;
1127 z.zfree = Z_NULL;
1128 z.opaque = Z_NULL;
1129 ret = inflateInit2(&z, -15);
1130 }
1131 else
1132 ret = inflateReset(&z);
1133 if (ret != Z_OK)
1134 return ret;
1135
1136 z.next_in = in;
1137 z.avail_in = in_size;
1138 z.next_out = out;
1139 z.avail_out = *out_size;
1140
1141 ret = inflate(&z, Z_NO_FLUSH);
1142 //inflateEnd(&z);
1143
1144 *out_size -= z.avail_out;
1145 return ret == 1 ? 0 : ret;
1146}
1147
1148static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)
1149{
1150 unsigned long cdbuffer_size, cdbuffer_size_expect;
1151 unsigned int size;
1152 int is_compressed;
1153 off_t start_byte;
1154 int ret, block;
1155
1156 if (base)
1157 sector += base / 2352;
1158
1159 block = sector >> compr_img->block_shift;
1160 compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1);
1161
1162 if (block == compr_img->current_block) {
1163 //printf("hit sect %d\n", sector);
1164 goto finish;
1165 }
1166
1167 if (sector >= compr_img->index_len * 16) {
1168 SysPrintf("sector %d is past img end\n", sector);
1169 return -1;
1170 }
1171
1172 start_byte = compr_img->index_table[block] & ~OFF_T_MSB;
1173 if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) {
1174 SysPrintf("seek error for block %d at %llx: ",
1175 block, (long long)start_byte);
1176 perror(NULL);
1177 return -1;
1178 }
1179
1180 is_compressed = !(compr_img->index_table[block] & OFF_T_MSB);
1181 size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte;
1182 if (size > sizeof(compr_img->buff_compressed)) {
1183 SysPrintf("block %d is too large: %u\n", block, size);
1184 return -1;
1185 }
1186
1187 if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0],
1188 1, size, cdHandle) != size) {
1189 SysPrintf("read error for block %d at %x: ", block, start_byte);
1190 perror(NULL);
1191 return -1;
1192 }
1193
1194 if (is_compressed) {
1195 cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift;
1196 cdbuffer_size = cdbuffer_size_expect;
1197 ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size);
1198 if (ret != 0) {
1199 SysPrintf("uncompress failed with %d for block %d, sector %d\n",
1200 ret, block, sector);
1201 return -1;
1202 }
1203 if (cdbuffer_size != cdbuffer_size_expect)
1204 SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size,
1205 cdbuffer_size_expect, sector);
1206 }
1207
1208 // done at last!
1209 compr_img->current_block = block;
1210
1211finish:
1212 if (dest != cdbuffer) // copy avoid HACK
1213 memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk],
1214 CD_FRAMESIZE_RAW);
1215 return CD_FRAMESIZE_RAW;
1216}
1217
1218#ifdef HAVE_CHD
1219static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector)
1220{
1221 int hunk;
1222
1223 sector += base;
1224
1225 hunk = sector / chd_img->sectors_per_hunk;
1226 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1227
1228 if (hunk != chd_img->current_hunk)
1229 {
1230 chd_read(chd_img->chd, hunk, chd_img->buffer);
1231 chd_img->current_hunk = hunk;
1232 }
1233
1234 if (dest != cdbuffer) // copy avoid HACK
1235 memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk],
1236 CD_FRAMESIZE_RAW);
1237 return CD_FRAMESIZE_RAW;
1238}
1239
1240static int cdread_sub_chd(FILE *f, int sector)
1241{
1242 int hunk;
1243
1244 if (!subChanMixed)
1245 return -1;
1246
1247 hunk = sector / chd_img->sectors_per_hunk;
1248 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1249
1250 if (hunk != chd_img->current_hunk)
1251 {
1252 chd_read(chd_img->chd, hunk, chd_img->buffer);
1253 chd_img->current_hunk = hunk;
1254 }
1255
1256 memcpy(subbuffer, chd_img->buffer[chd_img->sector_in_hunk] + CD_FRAMESIZE_RAW, SUB_FRAMESIZE);
1257 return SUB_FRAMESIZE;
1258}
1259#endif
1260
1261static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector)
1262{
1263 int ret;
1264
1265 fseek(f, base + sector * 2048, SEEK_SET);
1266 ret = fread((char *)dest + 12 * 2, 1, 2048, f);
1267
1268 // not really necessary, fake mode 2 header
1269 memset(cdbuffer, 0, 12 * 2);
1270 sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]);
1271 cdbuffer[12 + 3] = 1;
1272
1273 return 12*2 + ret;
1274}
1275
1276static unsigned char * CALLBACK ISOgetBuffer_compr(void) {
1277 return compr_img->buff_raw[compr_img->sector_in_blk] + 12;
1278}
1279
1280#ifdef HAVE_CHD
1281static unsigned char * CALLBACK ISOgetBuffer_chd(void) {
1282 return chd_img->buffer[chd_img->sector_in_hunk] + 12;
1283}
1284#endif
1285
1286static unsigned char * CALLBACK ISOgetBuffer(void) {
1287 return cdbuffer + 12;
1288}
1289
1290static void PrintTracks(void) {
1291 int i;
1292
1293 for (i = 1; i <= numtracks; i++) {
1294 SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"),
1295 i, (ti[i].type == DATA ? "DATA" : "AUDIO"),
1296 ti[i].start[0], ti[i].start[1], ti[i].start[2],
1297 ti[i].length[0], ti[i].length[1], ti[i].length[2]);
1298 }
1299}
1300
1301// This function is invoked by the front-end when opening an ISO
1302// file for playback
1303static long CALLBACK ISOopen(void) {
1304 boolean isMode1ISO = FALSE;
1305 char alt_bin_filename[MAXPATHLEN];
1306 const char *bin_filename;
1307 char image_str[1024];
1308 int is_chd = 0;
1309
1310 if (cdHandle != NULL) {
1311 return 0; // it's already open
1312 }
1313
1314 cdHandle = fopen(GetIsoFile(), "rb");
1315 if (cdHandle == NULL) {
1316 SysPrintf(_("Could't open '%s' for reading: %s\n"),
1317 GetIsoFile(), strerror(errno));
1318 return -1;
1319 }
1320
1321 snprintf(image_str, sizeof(image_str) - 6*4 - 1,
1322 "Loaded CD Image: %s", GetIsoFile());
1323
1324 cddaBigEndian = FALSE;
1325 subChanMixed = FALSE;
1326 subChanRaw = FALSE;
1327 pregapOffset = 0;
1328 cdrIsoMultidiskCount = 1;
1329 multifile = 0;
1330
1331 CDR_getBuffer = ISOgetBuffer;
1332 cdimg_read_func = cdread_normal;
1333 cdimg_read_sub_func = NULL;
1334
1335 if (parsetoc(GetIsoFile()) == 0) {
1336 strcat(image_str, "[+toc]");
1337 }
1338 else if (parseccd(GetIsoFile()) == 0) {
1339 strcat(image_str, "[+ccd]");
1340 }
1341 else if (parsemds(GetIsoFile()) == 0) {
1342 strcat(image_str, "[+mds]");
1343 }
1344 else if (parsecue(GetIsoFile()) == 0) {
1345 strcat(image_str, "[+cue]");
1346 }
1347 if (handlepbp(GetIsoFile()) == 0) {
1348 strcat(image_str, "[+pbp]");
1349 CDR_getBuffer = ISOgetBuffer_compr;
1350 cdimg_read_func = cdread_compressed;
1351 }
1352 else if (handlecbin(GetIsoFile()) == 0) {
1353 strcat(image_str, "[+cbin]");
1354 CDR_getBuffer = ISOgetBuffer_compr;
1355 cdimg_read_func = cdread_compressed;
1356 }
1357#ifdef HAVE_CHD
1358 else if (handlechd(GetIsoFile()) == 0) {
1359 strcat(image_str, "[+chd]");
1360 CDR_getBuffer = ISOgetBuffer_chd;
1361 cdimg_read_func = cdread_chd;
1362 cdimg_read_sub_func = cdread_sub_chd;
1363 is_chd = 1;
1364 }
1365#endif
1366
1367 if (!subChanMixed && opensubfile(GetIsoFile()) == 0) {
1368 strcat(image_str, "[+sub]");
1369 }
1370 if (opensbifile(GetIsoFile()) == 0) {
1371 strcat(image_str, "[+sbi]");
1372 }
1373
1374 fseeko(cdHandle, 0, SEEK_END);
1375
1376 // maybe user selected metadata file instead of main .bin ..
1377 bin_filename = GetIsoFile();
1378 if (ftello(cdHandle) < 2352 * 0x10) {
1379 static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
1380 FILE *tmpf = NULL;
1381 size_t i;
1382 char *p;
1383
1384 strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename));
1385 alt_bin_filename[MAXPATHLEN - 1] = '\0';
1386 if (strlen(alt_bin_filename) >= 4) {
1387 p = alt_bin_filename + strlen(alt_bin_filename) - 4;
1388 for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
1389 strcpy(p, exts[i]);
1390 tmpf = fopen(alt_bin_filename, "rb");
1391 if (tmpf != NULL)
1392 break;
1393 }
1394 }
1395 if (tmpf != NULL) {
1396 bin_filename = alt_bin_filename;
1397 fclose(cdHandle);
1398 cdHandle = tmpf;
1399 fseeko(cdHandle, 0, SEEK_END);
1400 }
1401 }
1402
1403 // guess whether it is mode1/2048
1404 if (ftello(cdHandle) % 2048 == 0) {
1405 unsigned int modeTest = 0;
1406 fseek(cdHandle, 0, SEEK_SET);
1407 if (!fread(&modeTest, sizeof(modeTest), 1, cdHandle)) {
1408#ifndef NDEBUG
1409 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
1410#endif
1411 return -1;
1412 }
1413 if (SWAP32(modeTest) != 0xffffff00) {
1414 strcat(image_str, "[2048]");
1415 isMode1ISO = TRUE;
1416 }
1417 }
1418 fseek(cdHandle, 0, SEEK_SET);
1419
1420 SysPrintf("%s.\n", image_str);
1421
1422 PrintTracks();
1423
1424 if (subChanMixed && !is_chd) {
1425 cdimg_read_func = cdread_sub_mixed;
1426 cdimg_read_sub_func = cdread_sub_sub_mixed;
1427 }
1428 else if (isMode1ISO) {
1429 cdimg_read_func = cdread_2048;
1430 cdimg_read_sub_func = NULL;
1431 }
1432
1433 // make sure we have another handle open for cdda
1434 if (numtracks > 1 && ti[1].handle == NULL) {
1435 ti[1].handle = fopen(bin_filename, "rb");
1436 }
1437
1438 return 0;
1439}
1440
1441static long CALLBACK ISOclose(void) {
1442 int i;
1443
1444 if (cdHandle != NULL) {
1445 fclose(cdHandle);
1446 cdHandle = NULL;
1447 }
1448 if (subHandle != NULL) {
1449 fclose(subHandle);
1450 subHandle = NULL;
1451 }
1452 playing = FALSE;
1453 cddaHandle = NULL;
1454
1455 if (compr_img != NULL) {
1456 free(compr_img->index_table);
1457 free(compr_img);
1458 compr_img = NULL;
1459 }
1460
1461#ifdef HAVE_CHD
1462 if (chd_img != NULL) {
1463 chd_close(chd_img->chd);
1464 free(chd_img->buffer);
1465 free(chd_img);
1466 chd_img = NULL;
1467 }
1468#endif
1469
1470 for (i = 1; i <= numtracks; i++) {
1471 if (ti[i].handle != NULL) {
1472 fclose(ti[i].handle);
1473 ti[i].handle = NULL;
1474 }
1475 }
1476 numtracks = 0;
1477 ti[1].type = 0;
1478 UnloadSBI();
1479
1480 memset(cdbuffer, 0, sizeof(cdbuffer));
1481 CDR_getBuffer = ISOgetBuffer;
1482
1483 return 0;
1484}
1485
1486static long CALLBACK ISOinit(void) {
1487 assert(cdHandle == NULL);
1488 assert(subHandle == NULL);
1489
1490 return 0; // do nothing
1491}
1492
1493static long CALLBACK ISOshutdown(void) {
1494 ISOclose();
1495 return 0;
1496}
1497
1498// return Starting and Ending Track
1499// buffer:
1500// byte 0 - start track
1501// byte 1 - end track
1502static long CALLBACK ISOgetTN(unsigned char *buffer) {
1503 buffer[0] = 1;
1504
1505 if (numtracks > 0) {
1506 buffer[1] = numtracks;
1507 }
1508 else {
1509 buffer[1] = 1;
1510 }
1511
1512 return 0;
1513}
1514
1515// return Track Time
1516// buffer:
1517// byte 0 - frame
1518// byte 1 - second
1519// byte 2 - minute
1520static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) {
1521 if (track == 0) {
1522 unsigned int sect;
1523 unsigned char time[3];
1524 sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
1525 sec2msf(sect, (char *)time);
1526 buffer[2] = time[0];
1527 buffer[1] = time[1];
1528 buffer[0] = time[2];
1529 }
1530 else if (numtracks > 0 && track <= numtracks) {
1531 buffer[2] = ti[track].start[0];
1532 buffer[1] = ti[track].start[1];
1533 buffer[0] = ti[track].start[2];
1534 }
1535 else {
1536 buffer[2] = 0;
1537 buffer[1] = 2;
1538 buffer[0] = 0;
1539 }
1540
1541 return 0;
1542}
1543
1544// decode 'raw' subchannel data ripped by cdrdao
1545static void DecodeRawSubData(void) {
1546 unsigned char subQData[12];
1547 int i;
1548
1549 memset(subQData, 0, sizeof(subQData));
1550
1551 for (i = 0; i < 8 * 12; i++) {
1552 if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed
1553 subQData[i >> 3] |= (1 << (7 - (i & 7)));
1554 }
1555 }
1556
1557 memcpy(&subbuffer[12], subQData, 12);
1558}
1559
1560// read track
1561// time: byte 0 - minute; byte 1 - second; byte 2 - frame
1562// uses bcd format
1563static boolean CALLBACK ISOreadTrack(unsigned char *time) {
1564 int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2]));
1565 long ret;
1566
1567 if (cdHandle == NULL) {
1568 return 0;
1569 }
1570
1571 if (pregapOffset && sector >= pregapOffset)
1572 sector -= 2 * 75;
1573
1574 ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector);
1575 if (ret < 12*2 + 2048)
1576 return 0;
1577
1578 return 1;
1579}
1580
1581// plays cdda audio
1582// sector: byte 0 - minute; byte 1 - second; byte 2 - frame
1583// does NOT uses bcd format
1584static long CALLBACK ISOplay(unsigned char *time) {
1585 playing = TRUE;
1586 return 0;
1587}
1588
1589// stops cdda audio
1590static long CALLBACK ISOstop(void) {
1591 playing = FALSE;
1592 return 0;
1593}
1594
1595// gets subchannel data
1596static unsigned char* CALLBACK ISOgetBufferSub(int sector) {
1597 if (pregapOffset && sector >= pregapOffset) {
1598 sector -= 2 * 75;
1599 if (sector < pregapOffset) // ?
1600 return NULL;
1601 }
1602
1603 if (cdimg_read_sub_func != NULL) {
1604 if (cdimg_read_sub_func(cdHandle, sector) != SUB_FRAMESIZE)
1605 return NULL;
1606 }
1607 else if (subHandle != NULL) {
1608 if (fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET))
1609 return NULL;
1610 if (fread(subbuffer, 1, SUB_FRAMESIZE, subHandle) != SUB_FRAMESIZE)
1611 return NULL;
1612 }
1613 else {
1614 return NULL;
1615 }
1616
1617 if (subChanRaw) DecodeRawSubData();
1618 return subbuffer;
1619}
1620
1621static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
1622 u32 sect;
1623
1624 CDR__getStatus(stat);
1625
1626 if (playing) {
1627 stat->Type = 0x02;
1628 stat->Status |= 0x80;
1629 }
1630 else {
1631 // BIOS - boot ID (CD type)
1632 stat->Type = ti[1].type;
1633 }
1634
1635 // relative -> absolute time
1636 sect = cddaCurPos;
1637 sec2msf(sect, (char *)stat->Time);
1638
1639 return 0;
1640}
1641
1642// read CDDA sector into buffer
1643long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) {
1644 unsigned char msf[3] = {m, s, f};
1645 unsigned int file, track, track_start = 0;
1646 int ret;
1647
1648 cddaCurPos = msf2sec((char *)msf);
1649
1650 // find current track index
1651 for (track = numtracks; ; track--) {
1652 track_start = msf2sec(ti[track].start);
1653 if (track_start <= cddaCurPos)
1654 break;
1655 if (track == 1)
1656 break;
1657 }
1658
1659 // data tracks play silent
1660 if (ti[track].type != CDDA) {
1661 memset(buffer, 0, CD_FRAMESIZE_RAW);
1662 return 0;
1663 }
1664
1665 file = 1;
1666 if (multifile) {
1667 // find the file that contains this track
1668 for (file = track; file > 1; file--)
1669 if (ti[file].handle != NULL)
1670 break;
1671 }
1672
1673 ret = cdimg_read_func(ti[file].handle, ti[track].start_offset,
1674 buffer, cddaCurPos - track_start);
1675 if (ret != CD_FRAMESIZE_RAW) {
1676 memset(buffer, 0, CD_FRAMESIZE_RAW);
1677 return -1;
1678 }
1679
1680 if (cddaBigEndian) {
1681 int i;
1682 unsigned char tmp;
1683
1684 for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) {
1685 tmp = buffer[i * 2];
1686 buffer[i * 2] = buffer[i * 2 + 1];
1687 buffer[i * 2 + 1] = tmp;
1688 }
1689 }
1690
1691 return 0;
1692}
1693
1694void cdrIsoInit(void) {
1695 CDR_init = ISOinit;
1696 CDR_shutdown = ISOshutdown;
1697 CDR_open = ISOopen;
1698 CDR_close = ISOclose;
1699 CDR_getTN = ISOgetTN;
1700 CDR_getTD = ISOgetTD;
1701 CDR_readTrack = ISOreadTrack;
1702 CDR_getBuffer = ISOgetBuffer;
1703 CDR_play = ISOplay;
1704 CDR_stop = ISOstop;
1705 CDR_getBufferSub = ISOgetBufferSub;
1706 CDR_getStatus = ISOgetStatus;
1707 CDR_readCDDA = ISOreadCDDA;
1708
1709 CDR_getDriveLetter = CDR__getDriveLetter;
1710 CDR_configure = CDR__configure;
1711 CDR_test = CDR__test;
1712 CDR_about = CDR__about;
1713 CDR_setfilename = CDR__setfilename;
1714
1715 numtracks = 0;
1716}
1717
1718int cdrIsoActive(void) {
1719 return (cdHandle != NULL);
1720}
ARM optimized PCSX fork