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cdrom: change GetlocP handling
[pcsx_rearmed.git] / libpcsxcore / cdriso.c
CommitLineData
ef79bbde
P		 1/***************************************************************************
2 * Copyright (C) 2007 PCSX-df Team *
3 * Copyright (C) 2009 Wei Mingzhi *
77160d47 4 * Copyright (C) 2012 notaz *
ef79bbde
P		 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., *
deebc67f 19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
ef79bbde
P		 20 ***************************************************************************/
21
22#include "psxcommon.h"
23#include "plugins.h"
24#include "cdrom.h"
25#include "cdriso.h"
ae4e7dc9 26#include "ppf.h"
ef79bbde 27
f9fb1cf7 28#include <errno.h>
29#include <zlib.h>
b0ec2e6d 30#ifdef HAVE_CHD
ce188d4d 31#include <chd.h>
b0ec2e6d 32#endif
f9fb1cf7 33
ef79bbde 34#ifdef _WIN32
003cfc63 35#define WIN32_LEAN_AND_MEAN
ef79bbde
P		 36#include <process.h>
37#include <windows.h>
deebc67f 38#define strcasecmp _stricmp
ef79bbde
P		 39#else
40#include <pthread.h>
41#include <sys/time.h>
349f7d81 42#include <unistd.h>
ef79bbde
P		 43#endif
44
226a5691 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
9361a5aa 52
cc376814 53#define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1))
54
0c2871a7 55unsigned int cdrIsoMultidiskCount;
56unsigned int cdrIsoMultidiskSelect;
57
ef79bbde
P		 58static FILE *cdHandle = NULL;
59static FILE *cddaHandle = NULL;
60static FILE *subHandle = NULL;
61
62static boolean subChanMixed = FALSE;
63static boolean subChanRaw = FALSE;
64
deebc67f 65static boolean multifile = FALSE;
66
81abe4d5 67static unsigned char cdbuffer[CD_FRAMESIZE_RAW];
ef79bbde
P		 68static unsigned char subbuffer[SUB_FRAMESIZE];
69
38b8102c 70static boolean playing = FALSE;
ef79bbde 71static boolean cddaBigEndian = FALSE;
8aa91443 72/* Frame offset into CD image where pregap data would be found if it was there.
73 * If a game seeks there we must *not* return subchannel data since it's
74 * not in the CD image, so that cdrom code can fake subchannel data instead.
75 * XXX: there could be multiple pregaps but PSX dumps only have one? */
76static unsigned int pregapOffset;
ef79bbde 77
5b568098 78static unsigned int cddaCurPos;
deebc67f 79
9a92bffb 80// compressed image stuff
81static struct {
82 unsigned char buff_raw[16][CD_FRAMESIZE_RAW];
83 unsigned char buff_compressed[CD_FRAMESIZE_RAW * 16 + 100];
cc376814 84 off_t *index_table;
9a92bffb 85 unsigned int index_len;
0877957a 86 unsigned int block_shift;
9a92bffb 87 unsigned int current_block;
88 unsigned int sector_in_blk;
89} *compr_img;
90
b0ec2e6d 91#ifdef HAVE_CHD
ce188d4d 92static struct {
93 unsigned char (*buffer)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE];
94 chd_file* chd;
95 const chd_header* header;
96 unsigned int sectors_per_hunk;
97 unsigned int current_hunk;
98 unsigned int sector_in_hunk;
99} *chd_img;
b0ec2e6d 100#endif
ce188d4d 101
0eacae49 102static int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
103static int (*cdimg_read_sub_func)(FILE *f, int sector);
9a92bffb 104
ef79bbde
P		 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
19c03d80 112static void DecodeRawSubData(void);
113
ef79bbde 114struct trackinfo {
deebc67f 115 enum {DATA=1, CDDA} type;
ef79bbde
P		 116 char start[3]; // MSF-format
117 char length[3]; // MSF-format
38b8102c 118 FILE *handle; // for multi-track images CDDA
77160d47 119 unsigned int start_offset; // byte offset from start of above file
ef79bbde
P		 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
ef79bbde
P		 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;
e999be41 174 char linebuf[256], tmp[256], name[256];
ef79bbde
P		 175 char *token;
176 char time[20], time2[20];
e999be41 177 unsigned int t, sector_offs, sector_size;
178 unsigned int current_zero_gap = 0;
ef79bbde
P		 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
226a5691 192 if ((fi = fopen(tocname, "r")) == NULL) {
ef79bbde
P		 193 // try changing extension to .cue (to satisfy some stupid tutorials)
194 strcpy(tocname + strlen(tocname) - 4, ".cue");
226a5691 195 if ((fi = fopen(tocname, "r")) == NULL) {
ef79bbde
P		 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';
226a5691 201 if ((fi = fopen(tocname, "r")) == NULL) {
ef79bbde
P		 202 return -1;
203 }
204 }
205 else {
206 return -1;
207 }
208 }
92f43ab0 209 // check if it's really a TOC named as a .cue
9361a5aa
EC		 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 }
92f43ab0 216 }
217 fseek(fi, 0, SEEK_SET);
ef79bbde
P		 218 }
219
220 memset(&ti, 0, sizeof(ti));
221 cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio
222
e999be41 223 sector_size = CD_FRAMESIZE_RAW;
19c03d80 224 sector_offs = 2 * 75;
225
ef79bbde
P		 226 // parse the .toc file
227 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
228 // search for tracks
e999be41 229 strncpy(tmp, linebuf, sizeof(linebuf));
230 token = strtok(tmp, " ");
ef79bbde
P		 231
232 if (token == NULL) continue;
233
234 if (!strcmp(token, "TRACK")) {
e999be41 235 sector_offs += current_zero_gap;
236 current_zero_gap = 0;
237
ef79bbde
P		 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, " ");
e999be41 248 if (token != NULL && !strncmp(token, "RW", 2)) {
249 sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE;
ef79bbde 250 subChanMixed = TRUE;
e999be41 251 if (!strncmp(token, "RW_RAW", 6))
252 subChanRaw = TRUE;
ef79bbde
P		 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);
19c03d80 262 ti[numtracks].start_offset = t;
e999be41 263 t = t / sector_size + sector_offs;
ef79bbde
P		 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);
e999be41 275 t += msf2sec(ti[numtracks].start) * sector_size;
19c03d80 276 ti[numtracks].start_offset = t;
e999be41 277 t = t / sector_size + sector_offs;
ef79bbde
P		 278 sec2msf(t, (char *)&ti[numtracks].start);
279 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
280 }
e999be41 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 }
8aa91443 292 if (numtracks > 1) {
293 t = ti[numtracks - 1].start_offset;
e999be41 294 t /= sector_size;
8aa91443 295 pregapOffset = t + msf2sec(ti[numtracks - 1].length);
296 }
19c03d80 297 }
e999be41 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 }
ef79bbde
P		 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];
38b8102c 319 char filepath[MAXPATHLEN];
320 char *incue_fname;
ef79bbde
P		 321 FILE *fi;
322 char *token;
323 char time[20];
324 char *tmp;
19c03d80 325 char linebuf[256], tmpb[256], dummy[256];
38b8102c 326 unsigned int incue_max_len;
77160d47 327 unsigned int t, file_len, mode, sector_offs;
328 unsigned int sector_size = 2352;
ef79bbde
P		 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) {
2cc221eb 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");
ef79bbde
P		 340 }
341 else {
342 return -1;
343 }
344
226a5691 345 if ((fi = fopen(cuename, "r")) == NULL) {
ef79bbde
P		 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
38b8102c 362 // build a path for files referenced in .cue
363 strncpy(filepath, cuename, sizeof(filepath));
22bbabf6 364 tmp = strrchr(filepath, '/');
38b8102c 365 if (tmp == NULL)
22bbabf6 366 tmp = strrchr(filepath, '\\');
367 if (tmp != NULL)
368 tmp++;
369 else
38b8102c 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
ef79bbde
P		 376 memset(&ti, 0, sizeof(ti));
377
19c03d80 378 file_len = 0;
379 sector_offs = 2 * 75;
380
ef79bbde
P		 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
19c03d80 389 if (!strcmp(token, "TRACK")) {
ef79bbde
P		 390 numtracks++;
391
77160d47 392 sector_size = 0;
ef79bbde
P		 393 if (strstr(linebuf, "AUDIO") != NULL) {
394 ti[numtracks].type = CDDA;
77160d47 395 sector_size = 2352;
ef79bbde 396 }
77160d47 397 else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, &sector_size) == 3)
ef79bbde 398 ti[numtracks].type = DATA;
77160d47 399 else {
400 SysPrintf(".cue: failed to parse TRACK\n");
401 ti[numtracks].type = numtracks == 1 ? DATA : CDDA;
ef79bbde 402 }
77160d47 403 if (sector_size == 0)
404 sector_size = 2352;
ef79bbde
P		 405 }
406 else if (!strcmp(token, "INDEX")) {
77160d47 407 if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2)
408 SysPrintf(".cue: failed to parse INDEX\n");
19c03d80 409 tok2msf(time, (char *)&ti[numtracks].start);
ef79bbde 410
19c03d80 411 t = msf2sec(ti[numtracks].start);
77160d47 412 ti[numtracks].start_offset = t * sector_size;
19c03d80 413 t += sector_offs;
ef79bbde 414 sec2msf(t, ti[numtracks].start);
19c03d80 415
416 // default track length to file length
77160d47 417 t = file_len - ti[numtracks].start_offset / sector_size;
19c03d80 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);
38b8102c 425 }
8aa91443 426 if (numtracks > 1 && pregapOffset == -1)
77160d47 427 pregapOffset = ti[numtracks].start_offset / sector_size;
19c03d80 428 }
429 else if (!strcmp(token, "PREGAP")) {
430 if (sscanf(linebuf, " PREGAP %8s", time) == 1) {
431 tok2msf(time, dummy);
432 sector_offs += msf2sec(dummy);
38b8102c 433 }
8aa91443 434 pregapOffset = -1; // mark to fill track start_offset
19c03d80 435 }
436 else if (!strcmp(token, "FILE")) {
9a9bcd78 437 t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb);
385c023b 438 if (t != 1)
9a9bcd78 439 sscanf(linebuf, " FILE %255s", tmpb);
19c03d80 440
6f4557bf 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);
226a5691 449 ti[numtracks + 1].handle = fopen(filepath, "rb");
ef79bbde 450
19c03d80 451 // update global offset if this is not first file in this .cue
deebc67f 452 if (numtracks + 1 > 1) {
453 multifile = 1;
19c03d80 454 sector_offs += file_len;
deebc67f 455 }
19c03d80 456
457 file_len = 0;
38b8102c 458 if (ti[numtracks + 1].handle == NULL) {
19c03d80 459 SysPrintf(_("\ncould not open: %s\n"), filepath);
460 continue;
38b8102c 461 }
19c03d80 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 &&
2cc221eb 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
38b8102c 469 fclose(cdHandle);
226a5691 470 cdHandle = fopen(filepath, "rb");
ef79bbde
P		 471 }
472 }
473 }
474
475 fclose(fi);
476
2cc221eb 477 // if there are no tracks detected, then it's not a cue file
478 if (!numtracks)
479 return -1;
480
ef79bbde
P		 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
226a5691 504 if ((fi = fopen(ccdname, "r")) == NULL) {
ef79bbde
P		 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);
77160d47 521 ti[numtracks].start_offset = t * 2352;
ef79bbde
P		 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
226a5691 563 if ((fi = fopen(mdsname, "rb")) == NULL) {
ef79bbde
P		 564 return -1;
565 }
566
567 memset(&ti, 0, sizeof(ti));
568
569 // check if it's a valid mds file
9361a5aa
EC		 570 if (fread(&i, 1, sizeof(i), fi) != sizeof(i))
571 goto fail_io;
ef79bbde
P		 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);
9361a5aa
EC		 581 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
582 goto fail_io;
ef79bbde
P		 583 offset = SWAP32(offset);
584
585 // get total number of tracks
586 offset += 14;
587 fseek(fi, offset, SEEK_SET);
9361a5aa
EC		 588 if (fread(&s, 1, sizeof(s), fi) != sizeof(s))
589 goto fail_io;
ef79bbde
P		 590 s = SWAP16(s);
591 numtracks = s;
592
593 // get offset to track blocks
594 fseek(fi, 4, SEEK_CUR);
9361a5aa
EC		 595 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
596 goto fail_io;
ef79bbde
P		 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);
77160d47 610 subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE);
ef79bbde
P		 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
9361a5aa
EC		 625 if (fread(&extra_offset, 1, sizeof(extra_offset), fi) != sizeof(extra_offset))
626 goto fail_io;
ef79bbde
P		 627 extra_offset = SWAP32(extra_offset);
628
19c03d80 629 // get track start offset (in .mdf)
630 fseek(fi, offset + 0x28, SEEK_SET);
9361a5aa
EC		 631 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
632 goto fail_io;
19c03d80 633 l = SWAP32(l);
77160d47 634 ti[i].start_offset = l;
19c03d80 635
8aa91443 636 // get pregap
637 fseek(fi, extra_offset, SEEK_SET);
9361a5aa
EC		 638 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
639 goto fail_io;
8aa91443 640 l = SWAP32(l);
641 if (l != 0 && i > 1)
77160d47 642 pregapOffset = msf2sec(ti[i].start);
8aa91443 643
644 // get the track length
9361a5aa
EC		 645 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
646 goto fail_io;
8aa91443 647 l = SWAP32(l);
648 sec2msf(l, ti[i].length);
649
ef79bbde
P		 650 offset += 0x50;
651 }
ef79bbde
P		 652 fclose(fi);
653 return 0;
9361a5aa
EC		 654fail_io:
655#ifndef NDEBUG
656 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
657#endif
658 fclose(fi);
659 return -1;
ef79bbde
P		 660}
661
0877957a 662static int handlepbp(const char *isofile) {
9a92bffb 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;
0c2871a7 681 char psar_sig[11];
cc376814 682 off_t psisoimg_offs, cdimg_base;
683 unsigned int t, cd_length;
684 unsigned int offsettab[8];
58cb1438 685 unsigned int psar_offs, index_entry_size, index_entry_offset;
9a92bffb 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
cc376814 694 fseeko(cdHandle, 0, SEEK_SET);
9726a4af 695
9a92bffb 696 numtracks = 0;
697
698 ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle);
699 if (ret != sizeof(pbp_hdr)) {
f29fbd53 700 SysPrintf("failed to read pbp\n");
9a92bffb 701 goto fail_io;
702 }
703
58cb1438
PC		 704 psar_offs = SWAP32(pbp_hdr.psar_offs);
705
706 ret = fseeko(cdHandle, psar_offs, SEEK_SET);
9a92bffb 707 if (ret != 0) {
58cb1438 708 SysPrintf("failed to seek to %x\n", psar_offs);
9a92bffb 709 goto fail_io;
710 }
711
58cb1438 712 psisoimg_offs = psar_offs;
9361a5aa
EC		 713 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
714 goto fail_io;
0c2871a7 715 psar_sig[10] = 0;
716 if (strcmp(psar_sig, "PSTITLEIMG") == 0) {
717 // multidisk image?
58cb1438 718 ret = fseeko(cdHandle, psar_offs + 0x200, SEEK_SET);
0c2871a7 719 if (ret != 0) {
58cb1438 720 SysPrintf("failed to seek to %x\n", psar_offs + 0x200);
0c2871a7 721 goto fail_io;
722 }
723
724 if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) {
f29fbd53 725 SysPrintf("failed to read offsettab\n");
0c2871a7 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) {
f29fbd53 735 SysPrintf("multidisk eboot has 0 images?\n");
0c2871a7 736 goto fail_io;
737 }
738
739 if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount)
740 cdrIsoMultidiskSelect = 0;
741
58cb1438 742 psisoimg_offs += SWAP32(offsettab[cdrIsoMultidiskSelect]);
0c2871a7 743
cc376814 744 ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET);
0c2871a7 745 if (ret != 0) {
cc376814 746 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs);
0c2871a7 747 goto fail_io;
748 }
749
9361a5aa
EC		 750 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
751 goto fail_io;
0c2871a7 752 psar_sig[10] = 0;
753 }
754
755 if (strcmp(psar_sig, "PSISOIMG00") != 0) {
f29fbd53 756 SysPrintf("bad psar_sig: %s\n", psar_sig);
9a92bffb 757 goto fail_io;
758 }
759
760 // seek to TOC
cc376814 761 ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET);
9a92bffb 762 if (ret != 0) {
cc376814 763 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800);
9a92bffb 764 goto fail_io;
765 }
766
767 // first 3 entries are special
768 fseek(cdHandle, sizeof(toc_entry), SEEK_CUR);
9361a5aa
EC		 769 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
770 goto fail_io;
9a92bffb 771 numtracks = btoi(toc_entry.index1[0]);
772
9361a5aa
EC		 773 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
774 goto fail_io;
9a92bffb 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++) {
9361a5aa
EC		 779 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
780 goto fail_io;
9a92bffb 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]);
77160d47 786 ti[i].start_offset *= 2352;
9a92bffb 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 }
77160d47 796 t = cd_length - ti[numtracks].start_offset / 2352;
9a92bffb 797 sec2msf(t, ti[numtracks].length);
798
799 // seek to ISO index
cc376814 800 ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET);
9a92bffb 801 if (ret != 0) {
f29fbd53 802 SysPrintf("failed to seek to ISO index\n");
9a92bffb 803 goto fail_io;
804 }
805
806 compr_img = calloc(1, sizeof(*compr_img));
807 if (compr_img == NULL)
808 goto fail_io;
809
0877957a 810 compr_img->block_shift = 4;
9a92bffb 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
0c2871a7 818 cdimg_base = psisoimg_offs + 0x100000;
9a92bffb 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)) {
f29fbd53 822 SysPrintf("failed to read index_entry #%d\n", i);
9a92bffb 823 goto fail_index;
824 }
825
58cb1438
PC		 826 index_entry_size = SWAP32(index_entry.size);
827 index_entry_offset = SWAP32(index_entry.offset);
828
829 if (index_entry_size == 0)
9a92bffb 830 break;
831
58cb1438 832 compr_img->index_table[i] = cdimg_base + index_entry_offset;
9a92bffb 833 }
58cb1438 834 compr_img->index_table[i] = cdimg_base + index_entry_offset + index_entry_size;
9a92bffb 835
836 return 0;
837
838fail_index:
839 free(compr_img->index_table);
840 compr_img->index_table = NULL;
9361a5aa
EC		 841 goto done;
842
9a92bffb 843fail_io:
9361a5aa
EC		 844#ifndef NDEBUG
845 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
846#endif
847
848done:
0877957a 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;
cc376814 868 unsigned int *index_table = NULL;
0c2871a7 869 unsigned int index = 0, plain;
0877957a 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
9726a4af 877 fseek(cdHandle, 0, SEEK_SET);
878
0877957a 879 ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle);
880 if (ret != sizeof(ciso_hdr)) {
f29fbd53 881 SysPrintf("failed to read ciso header\n");
0877957a 882 return -1;
883 }
884
885 if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) {
f29fbd53 886 SysPrintf("bad ciso header\n");
0877957a 887 return -1;
888 }
889 if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) {
cc376814 890 ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET);
0877957a 891 if (ret != 0) {
f29fbd53 892 SysPrintf("failed to seek to %x\n", ciso_hdr.header_size);
0877957a 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;
cc376814 905 index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0]));
906 if (index_table == NULL)
0877957a 907 goto fail_io;
908
cc376814 909 ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle);
0877957a 910 if (ret != compr_img->index_len) {
f29fbd53 911 SysPrintf("failed to read index table\n");
0877957a 912 goto fail_index;
913 }
914
cc376814 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
0877957a 919 for (i = 0; i < compr_img->index_len + 1; i++) {
cc376814 920 index = index_table[i];
0877957a 921 plain = index & 0x80000000;
922 index &= 0x7fffffff;
cc376814 923 compr_img->index_table[i] = (off_t)index << ciso_hdr.align;
924 if (plain)
925 compr_img->index_table[i] |= OFF_T_MSB;
0877957a 926 }
0877957a 927
928 return 0;
929
930fail_index:
cc376814 931 free(index_table);
0877957a 932fail_io:
933 if (compr_img != NULL) {
934 free(compr_img);
935 compr_img = NULL;
936 }
9a92bffb 937 return -1;
938}
939
b0ec2e6d 940#ifdef HAVE_CHD
ce188d4d 941static int handlechd(const char *isofile) {
6658ddcf 942 int frame_offset = 150;
943 int file_offset = 0;
944
ce188d4d 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)
1d2757f4 950 goto fail_io;
951
952 if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE))
953 goto fail_io;
ce188d4d 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;
ce188d4d 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
75d5614b 991 SysPrintf("chd: %s\n", meta);
992
993 if (md.track == 1) {
75d5614b 994 if (!strncmp(md.subtype, "RW", 2)) {
995 subChanMixed = TRUE;
996 if (!strcmp(md.subtype, "RW_RAW"))
997 subChanRaw = TRUE;
998 }
999 }
ce188d4d 1000
055b81e1 1001 ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA;
ce188d4d 1002
055b81e1 1003 sec2msf(frame_offset + md.pregap, ti[md.track].start);
1004 sec2msf(md.frames, ti[md.track].length);
ce188d4d 1005
6658ddcf 1006 ti[md.track].start_offset = file_offset + md.pregap;
ce188d4d 1007
6658ddcf 1008 // XXX: what about postgap?
1009 frame_offset += md.frames;
1010 file_offset += md.frames;
ce188d4d 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}
b0ec2e6d 1025#endif
ce188d4d 1026
ef79bbde
P		 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
226a5691 1041 subHandle = fopen(subname, "rb");
ef79bbde
P		 1042 if (subHandle == NULL) {
1043 return -1;
1044 }
1045
1046 return 0;
1047}
1048
ae4e7dc9 1049static int opensbifile(const char *isoname) {
ba1cce07 1050 char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0";
ae4e7dc9 1051 int s;
1052
1053 strncpy(sbiname, isoname, sizeof(sbiname));
1054 sbiname[MAXPATHLEN - 1] = '\0';
1055 if (strlen(sbiname) >= 4) {
ba1cce07
S		 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");
ae4e7dc9 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
679b71e2
JW		 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
00e69290
JW		 1170 index = ra_sector % SECTOR_BUFFER_SIZE;
1171
679b71e2
JW		 1172 // check for end of CD
1173 if (ra_count && ra_sector >= max_sector) {
1174 ra_count = 0;
00e69290
JW		 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);
679b71e2
JW		 1180 }
1181
1182 if (ra_count) {
679b71e2
JW		 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
77160d47 1266static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1267{
0eacae49 1268 int ret;
1269 if (fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET))
1270 goto fail_io;
1271 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1272 if (ret <= 0)
1273 goto fail_io;
1274 return ret;
1275
1276fail_io:
1277 // often happens in cdda gaps of a split cue/bin, so not logged
1278 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1279 return -1;
9a92bffb 1280}
1281
77160d47 1282static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1283{
1284 int ret;
1285
0eacae49 1286 if (fseek(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET))
1287 goto fail_io;
81abe4d5 1288 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
0eacae49 1289 if (ret <= 0)
1290 goto fail_io;
1291 return ret;
1292
1293fail_io:
1294 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1295 return -1;
1296}
1297
1298static int cdread_sub_sub_mixed(FILE *f, int sector)
1299{
1300 if (fseek(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + CD_FRAMESIZE_RAW, SEEK_SET))
1301 goto fail_io;
9361a5aa
EC		 1302 if (fread(subbuffer, 1, SUB_FRAMESIZE, f) != SUB_FRAMESIZE)
1303 goto fail_io;
9a92bffb 1304
0eacae49 1305 return SUB_FRAMESIZE;
9361a5aa
EC		 1306
1307fail_io:
0eacae49 1308 SysPrintf("subchannel: file IO error %d, sector %u\n", errno, sector);
1309 return -1;
9a92bffb 1310}
1311
2dd6a826 1312static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size)
9a92bffb 1313{
1314 static z_stream z;
1315 int ret = 0;
1316
1317 if (z.zalloc == NULL) {
1318 // XXX: one-time leak here..
1319 z.next_in = Z_NULL;
1320 z.avail_in = 0;
1321 z.zalloc = Z_NULL;
1322 z.zfree = Z_NULL;
1323 z.opaque = Z_NULL;
1324 ret = inflateInit2(&z, -15);
1325 }
1326 else
1327 ret = inflateReset(&z);
1328 if (ret != Z_OK)
1329 return ret;
1330
1331 z.next_in = in;
1332 z.avail_in = in_size;
1333 z.next_out = out;
1334 z.avail_out = *out_size;
1335
1336 ret = inflate(&z, Z_NO_FLUSH);
1337 //inflateEnd(&z);
1338
1339 *out_size -= z.avail_out;
1340 return ret == 1 ? 0 : ret;
1341}
1342
77160d47 1343static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1344{
0877957a 1345 unsigned long cdbuffer_size, cdbuffer_size_expect;
cc376814 1346 unsigned int size;
0877957a 1347 int is_compressed;
cc376814 1348 off_t start_byte;
9a92bffb 1349 int ret, block;
1350
77160d47 1351 if (base)
1352 sector += base / 2352;
1353
0877957a 1354 block = sector >> compr_img->block_shift;
1355 compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1);
9a92bffb 1356
1357 if (block == compr_img->current_block) {
1358 //printf("hit sect %d\n", sector);
1359 goto finish;
1360 }
1361
1362 if (sector >= compr_img->index_len * 16) {
f29fbd53 1363 SysPrintf("sector %d is past img end\n", sector);
9a92bffb 1364 return -1;
1365 }
1366
cc376814 1367 start_byte = compr_img->index_table[block] & ~OFF_T_MSB;
1368 if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) {
1369 SysPrintf("seek error for block %d at %llx: ",
1370 block, (long long)start_byte);
9a92bffb 1371 perror(NULL);
1372 return -1;
1373 }
1374
cc376814 1375 is_compressed = !(compr_img->index_table[block] & OFF_T_MSB);
1376 size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte;
9a92bffb 1377 if (size > sizeof(compr_img->buff_compressed)) {
f29fbd53 1378 SysPrintf("block %d is too large: %u\n", block, size);
9a92bffb 1379 return -1;
1380 }
1381
0877957a 1382 if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0],
1383 1, size, cdHandle) != size) {
f29fbd53 1384 SysPrintf("read error for block %d at %x: ", block, start_byte);
9a92bffb 1385 perror(NULL);
1386 return -1;
1387 }
1388
0877957a 1389 if (is_compressed) {
1390 cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift;
1391 cdbuffer_size = cdbuffer_size_expect;
2dd6a826 1392 ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size);
0877957a 1393 if (ret != 0) {
f29fbd53 1394 SysPrintf("uncompress failed with %d for block %d, sector %d\n",
0877957a 1395 ret, block, sector);
1396 return -1;
1397 }
1398 if (cdbuffer_size != cdbuffer_size_expect)
f29fbd53 1399 SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size,
0877957a 1400 cdbuffer_size_expect, sector);
9a92bffb 1401 }
9a92bffb 1402
1403 // done at last!
1404 compr_img->current_block = block;
1405
1406finish:
1407 if (dest != cdbuffer) // copy avoid HACK
81abe4d5 1408 memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk],
1409 CD_FRAMESIZE_RAW);
1410 return CD_FRAMESIZE_RAW;
9a92bffb 1411}
1412
b0ec2e6d 1413#ifdef HAVE_CHD
ce188d4d 1414static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector)
1415{
1416 int hunk;
1417
0eacae49 1418 sector += base;
ce188d4d 1419
1420 hunk = sector / chd_img->sectors_per_hunk;
1421 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1422
055b81e1 1423 if (hunk != chd_img->current_hunk)
1424 {
1425 chd_read(chd_img->chd, hunk, chd_img->buffer);
1426 chd_img->current_hunk = hunk;
1427 }
ce188d4d 1428
ce188d4d 1429 if (dest != cdbuffer) // copy avoid HACK
1430 memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk],
1431 CD_FRAMESIZE_RAW);
1432 return CD_FRAMESIZE_RAW;
1433}
0eacae49 1434
1435static int cdread_sub_chd(FILE *f, int sector)
1436{
1437 int hunk;
1438
1439 if (!subChanMixed)
1440 return -1;
1441
1442 hunk = sector / chd_img->sectors_per_hunk;
1443 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1444
1445 if (hunk != chd_img->current_hunk)
1446 {
1447 chd_read(chd_img->chd, hunk, chd_img->buffer);
1448 chd_img->current_hunk = hunk;
1449 }
1450
1451 memcpy(subbuffer, chd_img->buffer[chd_img->sector_in_hunk] + CD_FRAMESIZE_RAW, SUB_FRAMESIZE);
1452 return SUB_FRAMESIZE;
1453}
b0ec2e6d 1454#endif
5b568098 1455
77160d47 1456static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1457{
1458 int ret;
1459
77160d47 1460 fseek(f, base + sector * 2048, SEEK_SET);
81abe4d5 1461 ret = fread((char *)dest + 12 * 2, 1, 2048, f);
9a92bffb 1462
1463 // not really necessary, fake mode 2 header
81abe4d5 1464 memset(cdbuffer, 0, 12 * 2);
1465 sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]);
1466 cdbuffer[12 + 3] = 1;
9a92bffb 1467
1f665cdd 1468 return 12*2 + ret;
9a92bffb 1469}
1470
679b71e2
JW		 1471#ifndef _WIN32
1472
1473static int cdread_async(FILE *f, unsigned int base, void *dest, int sector) {
1474 boolean found = FALSE;
1475 int i = sector % SECTOR_BUFFER_SIZE;
1476 long ret;
1477
1478 if (f != cdHandle || base != 0 || dest != cdbuffer) {
1479 // Async reads are only supported for cdbuffer, so call the sync
1480 // function directly.
1481 return sync_cdimg_read_func(f, base, dest, sector);
1482 }
1483
1484 pthread_mutex_lock(&read_thread_msg_lock);
1485
1486 // Only wait if we're not trying to read the next sector and
1487 // sector_start is set (meaning the last request hasn't been
1488 // processed yet)
1489 while(read_thread_sector_start != -1 && read_thread_sector_end + 1 != sector) {
1490 pthread_cond_wait(&read_thread_msg_done, &read_thread_msg_lock);
1491 }
1492
1493 if (read_thread_sector_start == -1)
1494 read_thread_sector_start = sector;
1495
1496 read_thread_sector_end = sector;
1497 pthread_cond_signal(&read_thread_msg_avail);
1498 pthread_mutex_unlock(&read_thread_msg_lock);
1499
1500 do {
1501 pthread_mutex_lock(&sectorbuffer_lock);
1502 if (sectorbuffer[i].sector == sector) {
1503 sectorbuffer_index = i;
1504 ret = sectorbuffer[i].ret;
1505 found = TRUE;
1506 }
1507
1508 if (!found) {
1509 pthread_cond_wait(&sectorbuffer_cond, &sectorbuffer_lock);
1510 }
1511 pthread_mutex_unlock(&sectorbuffer_lock);
1512 } while (!found);
1513
1514 return ret;
1515}
1516
1517#endif
1518
9a92bffb 1519static unsigned char * CALLBACK ISOgetBuffer_compr(void) {
1520 return compr_img->buff_raw[compr_img->sector_in_blk] + 12;
1521}
1522
b0ec2e6d 1523#ifdef HAVE_CHD
ce188d4d 1524static unsigned char * CALLBACK ISOgetBuffer_chd(void) {
1525 return chd_img->buffer[chd_img->sector_in_hunk] + 12;
1526}
b0ec2e6d 1527#endif
ce188d4d 1528
679b71e2
JW		 1529#ifndef _WIN32
1530static unsigned char * CALLBACK ISOgetBuffer_async(void) {
1531 unsigned char *buffer;
1532 pthread_mutex_lock(&sectorbuffer_lock);
1533 buffer = sectorbuffer[sectorbuffer_index].data;
1534 pthread_mutex_unlock(&sectorbuffer_lock);
1535 return buffer + 12;
1536}
1537
1538#endif
1539
9a92bffb 1540static unsigned char * CALLBACK ISOgetBuffer(void) {
81abe4d5 1541 return cdbuffer + 12;
9a92bffb 1542}
1543
ef79bbde
P		 1544static void PrintTracks(void) {
1545 int i;
1546
1547 for (i = 1; i <= numtracks; i++) {
1548 SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"),
1549 i, (ti[i].type == DATA ? "DATA" : "AUDIO"),
1550 ti[i].start[0], ti[i].start[1], ti[i].start[2],
1551 ti[i].length[0], ti[i].length[1], ti[i].length[2]);
1552 }
1553}
1554
1555// This function is invoked by the front-end when opening an ISO
1556// file for playback
1557static long CALLBACK ISOopen(void) {
9a92bffb 1558 boolean isMode1ISO = FALSE;
689e0447 1559 char alt_bin_filename[MAXPATHLEN];
1560 const char *bin_filename;
75d5614b 1561 char image_str[1024];
1562 int is_chd = 0;
9a92bffb 1563
ef79bbde
P		 1564 if (cdHandle != NULL) {
1565 return 0; // it's already open
1566 }
1567
226a5691 1568 cdHandle = fopen(GetIsoFile(), "rb");
ef79bbde 1569 if (cdHandle == NULL) {
2e058581 1570 SysPrintf(_("Could't open '%s' for reading: %s\n"),
1571 GetIsoFile(), strerror(errno));
ef79bbde
P		 1572 return -1;
1573 }
1574
75d5614b 1575 snprintf(image_str, sizeof(image_str) - 6*4 - 1,
1576 "Loaded CD Image: %s", GetIsoFile());
ef79bbde
P		 1577
1578 cddaBigEndian = FALSE;
1579 subChanMixed = FALSE;
1580 subChanRaw = FALSE;
8aa91443 1581 pregapOffset = 0;
0c2871a7 1582 cdrIsoMultidiskCount = 1;
deebc67f 1583 multifile = 0;
ef79bbde 1584
9a92bffb 1585 CDR_getBuffer = ISOgetBuffer;
1586 cdimg_read_func = cdread_normal;
0eacae49 1587 cdimg_read_sub_func = NULL;
9a92bffb 1588
92f43ab0 1589 if (parsetoc(GetIsoFile()) == 0) {
208177a7 1590 strcat(image_str, "[+toc]");
ef79bbde
P		 1591 }
1592 else if (parseccd(GetIsoFile()) == 0) {
208177a7 1593 strcat(image_str, "[+ccd]");
ef79bbde
P		 1594 }
1595 else if (parsemds(GetIsoFile()) == 0) {
208177a7 1596 strcat(image_str, "[+mds]");
ef79bbde 1597 }
92f43ab0 1598 else if (parsecue(GetIsoFile()) == 0) {
208177a7 1599 strcat(image_str, "[+cue]");
92f43ab0 1600 }
0877957a 1601 if (handlepbp(GetIsoFile()) == 0) {
208177a7 1602 strcat(image_str, "[+pbp]");
9a92bffb 1603 CDR_getBuffer = ISOgetBuffer_compr;
1604 cdimg_read_func = cdread_compressed;
1605 }
0877957a 1606 else if (handlecbin(GetIsoFile()) == 0) {
208177a7 1607 strcat(image_str, "[+cbin]");
0877957a 1608 CDR_getBuffer = ISOgetBuffer_compr;
1609 cdimg_read_func = cdread_compressed;
1610 }
b0ec2e6d 1611#ifdef HAVE_CHD
ce188d4d 1612 else if (handlechd(GetIsoFile()) == 0) {
208177a7 1613 strcat(image_str, "[+chd]");
ce188d4d 1614 CDR_getBuffer = ISOgetBuffer_chd;
1615 cdimg_read_func = cdread_chd;
0eacae49 1616 cdimg_read_sub_func = cdread_sub_chd;
75d5614b 1617 is_chd = 1;
ce188d4d 1618 }
b0ec2e6d 1619#endif
ef79bbde
P		 1620
1621 if (!subChanMixed && opensubfile(GetIsoFile()) == 0) {
208177a7 1622 strcat(image_str, "[+sub]");
ef79bbde 1623 }
ae4e7dc9 1624 if (opensbifile(GetIsoFile()) == 0) {
208177a7 1625 strcat(image_str, "[+sbi]");
ae4e7dc9 1626 }
ef79bbde 1627
cc376814 1628 fseeko(cdHandle, 0, SEEK_END);
c9e5423e 1629
1630 // maybe user selected metadata file instead of main .bin ..
689e0447 1631 bin_filename = GetIsoFile();
cc376814 1632 if (ftello(cdHandle) < 2352 * 0x10) {
c9e5423e 1633 static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
689e0447 1634 FILE *tmpf = NULL;
c9e5423e 1635 size_t i;
689e0447 1636 char *p;
c9e5423e 1637
689e0447 1638 strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename));
1639 alt_bin_filename[MAXPATHLEN - 1] = '\0';
1640 if (strlen(alt_bin_filename) >= 4) {
1641 p = alt_bin_filename + strlen(alt_bin_filename) - 4;
c9e5423e 1642 for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
1643 strcpy(p, exts[i]);
226a5691 1644 tmpf = fopen(alt_bin_filename, "rb");
689e0447 1645 if (tmpf != NULL)
c9e5423e 1646 break;
c9e5423e 1647 }
1648 }
689e0447 1649 if (tmpf != NULL) {
1650 bin_filename = alt_bin_filename;
1651 fclose(cdHandle);
1652 cdHandle = tmpf;
cc376814 1653 fseeko(cdHandle, 0, SEEK_END);
689e0447 1654 }
c9e5423e 1655 }
1656
1657 // guess whether it is mode1/2048
cc376814 1658 if (ftello(cdHandle) % 2048 == 0) {
9a92bffb 1659 unsigned int modeTest = 0;
1660 fseek(cdHandle, 0, SEEK_SET);
4f0c5e3f 1661 if (!fread(&modeTest, sizeof(modeTest), 1, cdHandle)) {
9361a5aa
EC		 1662#ifndef NDEBUG
1663 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
1664#endif
1665 return -1;
1666 }
9a92bffb 1667 if (SWAP32(modeTest) != 0xffffff00) {
208177a7 1668 strcat(image_str, "[2048]");
9a92bffb 1669 isMode1ISO = TRUE;
1670 }
1671 }
1672 fseek(cdHandle, 0, SEEK_SET);
1673
208177a7 1674 SysPrintf("%s.\n", image_str);
ef79bbde
P		 1675
1676 PrintTracks();
1677
0eacae49 1678 if (subChanMixed && !is_chd) {
9a92bffb 1679 cdimg_read_func = cdread_sub_mixed;
0eacae49 1680 cdimg_read_sub_func = cdread_sub_sub_mixed;
1681 }
1682 else if (isMode1ISO) {
9a92bffb 1683 cdimg_read_func = cdread_2048;
0eacae49 1684 cdimg_read_sub_func = NULL;
1685 }
9a92bffb 1686
38b8102c 1687 // make sure we have another handle open for cdda
1688 if (numtracks > 1 && ti[1].handle == NULL) {
226a5691 1689 ti[1].handle = fopen(bin_filename, "rb");
38b8102c 1690 }
1691
679b71e2
JW		 1692 if (Config.AsyncCD) {
1693 readThreadStart();
1694 }
ef79bbde
P		 1695 return 0;
1696}
1697
1698static long CALLBACK ISOclose(void) {
38b8102c 1699 int i;
1700
ef79bbde
P		 1701 if (cdHandle != NULL) {
1702 fclose(cdHandle);
1703 cdHandle = NULL;
1704 }
1705 if (subHandle != NULL) {
1706 fclose(subHandle);
1707 subHandle = NULL;
1708 }
6e537c6d 1709 playing = FALSE;
38b8102c 1710 cddaHandle = NULL;
1711
9a92bffb 1712 if (compr_img != NULL) {
1713 free(compr_img->index_table);
1714 free(compr_img);
1715 compr_img = NULL;
1716 }
1717
b0ec2e6d 1718#ifdef HAVE_CHD
ce188d4d 1719 if (chd_img != NULL) {
1720 chd_close(chd_img->chd);
1721 free(chd_img->buffer);
1722 free(chd_img);
1723 chd_img = NULL;
1724 }
b0ec2e6d 1725#endif
ce188d4d 1726
38b8102c 1727 for (i = 1; i <= numtracks; i++) {
1728 if (ti[i].handle != NULL) {
1729 fclose(ti[i].handle);
1730 ti[i].handle = NULL;
1731 }
1732 }
1733 numtracks = 0;
c0ee7ac6 1734 ti[1].type = 0;
ae4e7dc9 1735 UnloadSBI();
38b8102c 1736
c0ee7ac6 1737 memset(cdbuffer, 0, sizeof(cdbuffer));
1738 CDR_getBuffer = ISOgetBuffer;
1739
49942a16 1740 if (Config.AsyncCD) {
1741 readThreadStop();
1742 }
1743
38b8102c 1744 return 0;
1745}
1746
1747static long CALLBACK ISOinit(void) {
1748 assert(cdHandle == NULL);
1749 assert(subHandle == NULL);
1750
1751 return 0; // do nothing
1752}
1753
1754static long CALLBACK ISOshutdown(void) {
1755 ISOclose();
ef79bbde
P		 1756 return 0;
1757}
1758
1759// return Starting and Ending Track
1760// buffer:
1761// byte 0 - start track
1762// byte 1 - end track
1763static long CALLBACK ISOgetTN(unsigned char *buffer) {
1764 buffer[0] = 1;
1765
1766 if (numtracks > 0) {
1767 buffer[1] = numtracks;
1768 }
1769 else {
1770 buffer[1] = 1;
1771 }
1772
1773 return 0;
1774}
1775
1776// return Track Time
1777// buffer:
1778// byte 0 - frame
1779// byte 1 - second
1780// byte 2 - minute
1781static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) {
858ad511 1782 if (track == 0) {
858ad511 1783 unsigned int sect;
1784 unsigned char time[3];
1785 sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
ab948f7e 1786 sec2msf(sect, (char *)time);
858ad511 1787 buffer[2] = time[0];
1788 buffer[1] = time[1];
1789 buffer[0] = time[2];
1790 }
1791 else if (numtracks > 0 && track <= numtracks) {
ef79bbde
P		 1792 buffer[2] = ti[track].start[0];
1793 buffer[1] = ti[track].start[1];
1794 buffer[0] = ti[track].start[2];
1795 }
1796 else {
1797 buffer[2] = 0;
1798 buffer[1] = 2;
1799 buffer[0] = 0;
1800 }
1801
1802 return 0;
1803}
1804
1805// decode 'raw' subchannel data ripped by cdrdao
1806static void DecodeRawSubData(void) {
1807 unsigned char subQData[12];
1808 int i;
1809
1810 memset(subQData, 0, sizeof(subQData));
1811
1812 for (i = 0; i < 8 * 12; i++) {
1813 if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed
1814 subQData[i >> 3] |= (1 << (7 - (i & 7)));
1815 }
1816 }
1817
1818 memcpy(&subbuffer[12], subQData, 12);
1819}
1820
1821// read track
1822// time: byte 0 - minute; byte 1 - second; byte 2 - frame
1823// uses bcd format
d2e271b2 1824static boolean CALLBACK ISOreadTrack(unsigned char *time) {
19c03d80 1825 int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2]));
c0ee7ac6 1826 long ret;
19c03d80 1827
ef79bbde 1828 if (cdHandle == NULL) {
d2e271b2 1829 return 0;
ef79bbde
P		 1830 }
1831
0eacae49 1832 if (pregapOffset && sector >= pregapOffset)
1833 sector -= 2 * 75;
8aa91443 1834
c0ee7ac6 1835 ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector);
1f665cdd 1836 if (ret < 12*2 + 2048)
d2e271b2 1837 return 0;
ef79bbde 1838
d2e271b2 1839 return 1;
ef79bbde
P		 1840}
1841
ef79bbde
P		 1842// plays cdda audio
1843// sector: byte 0 - minute; byte 1 - second; byte 2 - frame
1844// does NOT uses bcd format
2e88c317 1845static long CALLBACK ISOplay(unsigned char *time) {
66425c25 1846 playing = TRUE;
ef79bbde
P		 1847 return 0;
1848}
1849
1850// stops cdda audio
1851static long CALLBACK ISOstop(void) {
66425c25 1852 playing = FALSE;
ef79bbde
P		 1853 return 0;
1854}
1855
1856// gets subchannel data
0eacae49 1857static unsigned char* CALLBACK ISOgetBufferSub(int sector) {
1858 if (pregapOffset && sector >= pregapOffset) {
1859 sector -= 2 * 75;
1860 if (sector < pregapOffset) // ?
1861 return NULL;
ef79bbde
P		 1862 }
1863
0eacae49 1864 if (cdimg_read_sub_func != NULL) {
1865 if (cdimg_read_sub_func(cdHandle, sector) != SUB_FRAMESIZE)
1866 return NULL;
1867 }
1868 else if (subHandle != NULL) {
1869 if (fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET))
1870 return NULL;
1871 if (fread(subbuffer, 1, SUB_FRAMESIZE, subHandle) != SUB_FRAMESIZE)
1872 return NULL;
1873 }
1874 else {
1875 return NULL;
1876 }
1877
1878 if (subChanRaw) DecodeRawSubData();
1879 return subbuffer;
ef79bbde
P		 1880}
1881
1882static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
deebc67f 1883 u32 sect;
1884
ef79bbde 1885 CDR__getStatus(stat);
deebc67f 1886
ef79bbde
P		 1887 if (playing) {
1888 stat->Type = 0x02;
1889 stat->Status |= 0x80;
ef79bbde
P		 1890 }
1891 else {
deebc67f 1892 // BIOS - boot ID (CD type)
1893 stat->Type = ti[1].type;
1894 }
1895
1896 // relative -> absolute time
1897 sect = cddaCurPos;
1898 sec2msf(sect, (char *)stat->Time);
1899
1900 return 0;
1901}
1902
1903// read CDDA sector into buffer
1904long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) {
1905 unsigned char msf[3] = {m, s, f};
1906 unsigned int file, track, track_start = 0;
1907 int ret;
1908
1909 cddaCurPos = msf2sec((char *)msf);
1910
1911 // find current track index
1912 for (track = numtracks; ; track--) {
1913 track_start = msf2sec(ti[track].start);
1914 if (track_start <= cddaCurPos)
1915 break;
1916 if (track == 1)
1917 break;
1918 }
1919
1920 // data tracks play silent
1921 if (ti[track].type != CDDA) {
1922 memset(buffer, 0, CD_FRAMESIZE_RAW);
1923 return 0;
1924 }
1925
1926 file = 1;
1927 if (multifile) {
1928 // find the file that contains this track
1929 for (file = track; file > 1; file--)
1930 if (ti[file].handle != NULL)
1931 break;
ef79bbde
P		 1932 }
1933
deebc67f 1934 ret = cdimg_read_func(ti[file].handle, ti[track].start_offset,
1935 buffer, cddaCurPos - track_start);
1936 if (ret != CD_FRAMESIZE_RAW) {
1937 memset(buffer, 0, CD_FRAMESIZE_RAW);
1938 return -1;
1939 }
1940
1941 if (cddaBigEndian) {
1942 int i;
1943 unsigned char tmp;
1944
1945 for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) {
1946 tmp = buffer[i * 2];
1947 buffer[i * 2] = buffer[i * 2 + 1];
1948 buffer[i * 2 + 1] = tmp;
1949 }
1950 }
858ad511 1951
ef79bbde
P		 1952 return 0;
1953}
1954
1955void cdrIsoInit(void) {
1956 CDR_init = ISOinit;
1957 CDR_shutdown = ISOshutdown;
1958 CDR_open = ISOopen;
1959 CDR_close = ISOclose;
1960 CDR_getTN = ISOgetTN;
1961 CDR_getTD = ISOgetTD;
1962 CDR_readTrack = ISOreadTrack;
1963 CDR_getBuffer = ISOgetBuffer;
1964 CDR_play = ISOplay;
1965 CDR_stop = ISOstop;
1966 CDR_getBufferSub = ISOgetBufferSub;
1967 CDR_getStatus = ISOgetStatus;
deebc67f 1968 CDR_readCDDA = ISOreadCDDA;
ef79bbde
P		 1969
1970 CDR_getDriveLetter = CDR__getDriveLetter;
1971 CDR_configure = CDR__configure;
1972 CDR_test = CDR__test;
1973 CDR_about = CDR__about;
1974 CDR_setfilename = CDR__setfilename;
1975
1976 numtracks = 0;
1977}
1978
1979int cdrIsoActive(void) {
1980 return (cdHandle != NULL);
1981}
ARM optimized PCSX fork