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