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Merge pull request #444 from justinweiss/hires-downscale
[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
ce36c10b 39#define usleep(x) (Sleep((x) / 1000))
ef79bbde
P		 40#else
41#include <pthread.h>
42#include <sys/time.h>
349f7d81 43#include <unistd.h>
ef79bbde
P		 44#endif
45
cc376814 46#define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1))
47
0c2871a7 48unsigned int cdrIsoMultidiskCount;
49unsigned int cdrIsoMultidiskSelect;
50
ef79bbde
P		 51static FILE *cdHandle = NULL;
52static FILE *cddaHandle = NULL;
53static FILE *subHandle = NULL;
54
55static boolean subChanMixed = FALSE;
56static boolean subChanRaw = FALSE;
8aa91443 57static boolean subChanMissing = FALSE;
ef79bbde 58
deebc67f 59static boolean multifile = FALSE;
60
81abe4d5 61static unsigned char cdbuffer[CD_FRAMESIZE_RAW];
ef79bbde
P		 62static unsigned char subbuffer[SUB_FRAMESIZE];
63
64static unsigned char sndbuffer[CD_FRAMESIZE_RAW * 10];
65
66#define CDDA_FRAMETIME (1000 * (sizeof(sndbuffer) / CD_FRAMESIZE_RAW) / 75)
67
68#ifdef _WIN32
69static HANDLE threadid;
70#else
71static pthread_t threadid;
72#endif
73static unsigned int initial_offset = 0;
38b8102c 74static boolean playing = FALSE;
ef79bbde 75static boolean cddaBigEndian = FALSE;
77160d47 76// cdda sectors in toc, byte offset in file
9a92bffb 77static unsigned int cdda_cur_sector;
2058d51f 78static unsigned int cdda_first_sector;
77160d47 79static unsigned int cdda_file_offset;
8aa91443 80/* Frame offset into CD image where pregap data would be found if it was there.
81 * If a game seeks there we must *not* return subchannel data since it's
82 * not in the CD image, so that cdrom code can fake subchannel data instead.
83 * XXX: there could be multiple pregaps but PSX dumps only have one? */
84static unsigned int pregapOffset;
ef79bbde 85
deebc67f 86#define cddaCurPos cdda_cur_sector
87
9a92bffb 88// compressed image stuff
89static struct {
90 unsigned char buff_raw[16][CD_FRAMESIZE_RAW];
91 unsigned char buff_compressed[CD_FRAMESIZE_RAW * 16 + 100];
cc376814 92 off_t *index_table;
9a92bffb 93 unsigned int index_len;
0877957a 94 unsigned int block_shift;
9a92bffb 95 unsigned int current_block;
96 unsigned int sector_in_blk;
97} *compr_img;
98
b0ec2e6d 99#ifdef HAVE_CHD
ce188d4d 100static struct {
101 unsigned char (*buffer)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE];
102 chd_file* chd;
103 const chd_header* header;
104 unsigned int sectors_per_hunk;
105 unsigned int current_hunk;
106 unsigned int sector_in_hunk;
107} *chd_img;
b0ec2e6d 108#endif
ce188d4d 109
77160d47 110int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
9a92bffb 111
ef79bbde
P		 112char* CALLBACK CDR__getDriveLetter(void);
113long CALLBACK CDR__configure(void);
114long CALLBACK CDR__test(void);
115void CALLBACK CDR__about(void);
116long CALLBACK CDR__setfilename(char *filename);
117long CALLBACK CDR__getStatus(struct CdrStat *stat);
118
19c03d80 119static void DecodeRawSubData(void);
120
ef79bbde 121struct trackinfo {
deebc67f 122 enum {DATA=1, CDDA} type;
ef79bbde
P		 123 char start[3]; // MSF-format
124 char length[3]; // MSF-format
38b8102c 125 FILE *handle; // for multi-track images CDDA
77160d47 126 unsigned int start_offset; // byte offset from start of above file
ef79bbde
P		 127};
128
129#define MAXTRACKS 100 /* How many tracks can a CD hold? */
130
131static int numtracks = 0;
132static struct trackinfo ti[MAXTRACKS];
133
134// get a sector from a msf-array
135static unsigned int msf2sec(char *msf) {
136 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
137}
138
139static void sec2msf(unsigned int s, char *msf) {
140 msf[0] = s / 75 / 60;
141 s = s - msf[0] * 75 * 60;
142 msf[1] = s / 75;
143 s = s - msf[1] * 75;
144 msf[2] = s;
145}
146
147// divide a string of xx:yy:zz into m, s, f
148static void tok2msf(char *time, char *msf) {
149 char *token;
150
151 token = strtok(time, ":");
152 if (token) {
153 msf[0] = atoi(token);
154 }
155 else {
156 msf[0] = 0;
157 }
158
159 token = strtok(NULL, ":");
160 if (token) {
161 msf[1] = atoi(token);
162 }
163 else {
164 msf[1] = 0;
165 }
166
167 token = strtok(NULL, ":");
168 if (token) {
169 msf[2] = atoi(token);
170 }
171 else {
172 msf[2] = 0;
173 }
174}
175
176#ifndef _WIN32
177static long GetTickCount(void) {
178 static time_t initial_time = 0;
179 struct timeval now;
180
181 gettimeofday(&now, NULL);
182
183 if (initial_time == 0) {
184 initial_time = now.tv_sec;
185 }
186
187 return (now.tv_sec - initial_time) * 1000L + now.tv_usec / 1000L;
188}
189#endif
190
191// this thread plays audio data
192#ifdef _WIN32
193static void playthread(void *param)
194#else
195static void *playthread(void *param)
196#endif
197{
983a7cfd 198 long osleep, d, t, i, s;
ef79bbde 199 unsigned char tmp;
77160d47 200 int ret = 0, sector_offs;
ef79bbde
P		 201
202 t = GetTickCount();
203
204 while (playing) {
9a92bffb 205 s = 0;
206 for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) {
77160d47 207 sector_offs = cdda_cur_sector - cdda_first_sector;
208 if (sector_offs < 0) {
209 d = CD_FRAMESIZE_RAW;
210 memset(sndbuffer + s, 0, d);
211 }
212 else {
213 d = cdimg_read_func(cddaHandle, cdda_file_offset,
214 sndbuffer + s, sector_offs);
215 if (d < CD_FRAMESIZE_RAW)
216 break;
217 }
2058d51f 218
9a92bffb 219 s += d;
220 cdda_cur_sector++;
ef79bbde 221 }
19c03d80 222
ef79bbde
P		 223 if (s == 0) {
224 playing = FALSE;
ef79bbde
P		 225 initial_offset = 0;
226 break;
227 }
228
229 if (!cdr.Muted && playing) {
230 if (cddaBigEndian) {
231 for (i = 0; i < s / 2; i++) {
232 tmp = sndbuffer[i * 2];
233 sndbuffer[i * 2] = sndbuffer[i * 2 + 1];
234 sndbuffer[i * 2 + 1] = tmp;
235 }
236 }
237
53598a71 238 // can't do it yet due to readahead..
239 //cdrAttenuate((short *)sndbuffer, s / 4, 1);
983a7cfd 240 do {
241 ret = SPU_playCDDAchannel((short *)sndbuffer, s);
242 if (ret == 0x7761)
ce36c10b 243 {
983a7cfd 244 usleep(6 * 1000);
ce36c10b 245 }
983a7cfd 246 } while (ret == 0x7761 && playing); // rearmed_wait
ef79bbde 247 }
983a7cfd 248
249 if (ret != 0x676f) { // !rearmed_go
250 // do approx sleep
251 long now;
252
253 // HACK: stop feeding data while emu is paused
254 extern int stop;
255 while (stop && playing)
ce36c10b 256 {
983a7cfd 257 usleep(10000);
ce36c10b 258 }
983a7cfd 259
260 now = GetTickCount();
261 osleep = t - now;
262 if (osleep <= 0) {
263 osleep = 1;
264 t = now;
265 }
266 else if (osleep > CDDA_FRAMETIME) {
267 osleep = CDDA_FRAMETIME;
268 t = now;
269 }
270
271 usleep(osleep * 1000);
272 t += CDDA_FRAMETIME;
273 }
274
ef79bbde
P		 275 }
276
277#ifdef _WIN32
278 _endthread();
279#else
280 pthread_exit(0);
281 return NULL;
282#endif
283}
284
285// stop the CDDA playback
286static void stopCDDA() {
287 if (!playing) {
288 return;
289 }
290
291 playing = FALSE;
292#ifdef _WIN32
293 WaitForSingleObject(threadid, INFINITE);
294#else
295 pthread_join(threadid, NULL);
296#endif
ef79bbde
P		 297}
298
299// start the CDDA playback
77160d47 300static void startCDDA(void) {
ef79bbde 301 if (playing) {
ef79bbde
P		 302 stopCDDA();
303 }
304
ef79bbde
P		 305 playing = TRUE;
306
307#ifdef _WIN32
308 threadid = (HANDLE)_beginthread(playthread, 0, NULL);
309#else
310 pthread_create(&threadid, NULL, playthread, NULL);
311#endif
312}
313
314// this function tries to get the .toc file of the given .bin
315// the necessary data is put into the ti (trackinformation)-array
316static int parsetoc(const char *isofile) {
317 char tocname[MAXPATHLEN];
318 FILE *fi;
e999be41 319 char linebuf[256], tmp[256], name[256];
ef79bbde
P		 320 char *token;
321 char time[20], time2[20];
e999be41 322 unsigned int t, sector_offs, sector_size;
323 unsigned int current_zero_gap = 0;
ef79bbde
P		 324
325 numtracks = 0;
326
327 // copy name of the iso and change extension from .bin to .toc
328 strncpy(tocname, isofile, sizeof(tocname));
329 tocname[MAXPATHLEN - 1] = '\0';
330 if (strlen(tocname) >= 4) {
331 strcpy(tocname + strlen(tocname) - 4, ".toc");
332 }
333 else {
334 return -1;
335 }
336
337 if ((fi = fopen(tocname, "r")) == NULL) {
338 // try changing extension to .cue (to satisfy some stupid tutorials)
339 strcpy(tocname + strlen(tocname) - 4, ".cue");
340 if ((fi = fopen(tocname, "r")) == NULL) {
341 // if filename is image.toc.bin, try removing .bin (for Brasero)
342 strcpy(tocname, isofile);
343 t = strlen(tocname);
344 if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) {
345 tocname[t - 4] = '\0';
346 if ((fi = fopen(tocname, "r")) == NULL) {
347 return -1;
348 }
349 }
350 else {
351 return -1;
352 }
353 }
92f43ab0 354 // check if it's really a TOC named as a .cue
355 fgets(linebuf, sizeof(linebuf), fi);
4295c491 356 token = strtok(linebuf, " ");
357 if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) {
92f43ab0 358 fclose(fi);
359 return -1;
360 }
361 fseek(fi, 0, SEEK_SET);
ef79bbde
P		 362 }
363
364 memset(&ti, 0, sizeof(ti));
365 cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio
366
e999be41 367 sector_size = CD_FRAMESIZE_RAW;
19c03d80 368 sector_offs = 2 * 75;
369
ef79bbde
P		 370 // parse the .toc file
371 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
372 // search for tracks
e999be41 373 strncpy(tmp, linebuf, sizeof(linebuf));
374 token = strtok(tmp, " ");
ef79bbde
P		 375
376 if (token == NULL) continue;
377
378 if (!strcmp(token, "TRACK")) {
e999be41 379 sector_offs += current_zero_gap;
380 current_zero_gap = 0;
381
ef79bbde
P		 382 // get type of track
383 token = strtok(NULL, " ");
384 numtracks++;
385
386 if (!strncmp(token, "MODE2_RAW", 9)) {
387 ti[numtracks].type = DATA;
388 sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0
389
390 // check if this image contains mixed subchannel data
391 token = strtok(NULL, " ");
e999be41 392 if (token != NULL && !strncmp(token, "RW", 2)) {
393 sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE;
ef79bbde 394 subChanMixed = TRUE;
e999be41 395 if (!strncmp(token, "RW_RAW", 6))
396 subChanRaw = TRUE;
ef79bbde
P		 397 }
398 }
399 else if (!strncmp(token, "AUDIO", 5)) {
400 ti[numtracks].type = CDDA;
401 }
402 }
403 else if (!strcmp(token, "DATAFILE")) {
404 if (ti[numtracks].type == CDDA) {
405 sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2);
19c03d80 406 ti[numtracks].start_offset = t;
e999be41 407 t = t / sector_size + sector_offs;
ef79bbde
P		 408 sec2msf(t, (char *)&ti[numtracks].start);
409 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
410 }
411 else {
412 sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time);
413 tok2msf((char *)&time, (char *)&ti[numtracks].length);
414 }
415 }
416 else if (!strcmp(token, "FILE")) {
417 sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2);
418 tok2msf((char *)&time, (char *)&ti[numtracks].start);
e999be41 419 t += msf2sec(ti[numtracks].start) * sector_size;
19c03d80 420 ti[numtracks].start_offset = t;
e999be41 421 t = t / sector_size + sector_offs;
ef79bbde
P		 422 sec2msf(t, (char *)&ti[numtracks].start);
423 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
424 }
e999be41 425 else if (!strcmp(token, "ZERO") || !strcmp(token, "SILENCE")) {
426 // skip unneeded optional fields
427 while (token != NULL) {
428 token = strtok(NULL, " ");
429 if (strchr(token, ':') != NULL)
430 break;
431 }
432 if (token != NULL) {
433 tok2msf(token, tmp);
434 current_zero_gap = msf2sec(tmp);
435 }
8aa91443 436 if (numtracks > 1) {
437 t = ti[numtracks - 1].start_offset;
e999be41 438 t /= sector_size;
8aa91443 439 pregapOffset = t + msf2sec(ti[numtracks - 1].length);
440 }
19c03d80 441 }
e999be41 442 else if (!strcmp(token, "START")) {
443 token = strtok(NULL, " ");
444 if (token != NULL && strchr(token, ':')) {
445 tok2msf(token, tmp);
446 t = msf2sec(tmp);
447 ti[numtracks].start_offset += (t - current_zero_gap) * sector_size;
448 t = msf2sec(ti[numtracks].start) + t;
449 sec2msf(t, (char *)&ti[numtracks].start);
450 }
451 }
ef79bbde
P		 452 }
453
454 fclose(fi);
455
456 return 0;
457}
458
459// this function tries to get the .cue file of the given .bin
460// the necessary data is put into the ti (trackinformation)-array
461static int parsecue(const char *isofile) {
462 char cuename[MAXPATHLEN];
38b8102c 463 char filepath[MAXPATHLEN];
464 char *incue_fname;
ef79bbde
P		 465 FILE *fi;
466 char *token;
467 char time[20];
468 char *tmp;
19c03d80 469 char linebuf[256], tmpb[256], dummy[256];
38b8102c 470 unsigned int incue_max_len;
77160d47 471 unsigned int t, file_len, mode, sector_offs;
472 unsigned int sector_size = 2352;
ef79bbde
P		 473
474 numtracks = 0;
475
476 // copy name of the iso and change extension from .bin to .cue
477 strncpy(cuename, isofile, sizeof(cuename));
478 cuename[MAXPATHLEN - 1] = '\0';
479 if (strlen(cuename) >= 4) {
480 strcpy(cuename + strlen(cuename) - 4, ".cue");
481 }
482 else {
483 return -1;
484 }
485
486 if ((fi = fopen(cuename, "r")) == NULL) {
487 return -1;
488 }
489
490 // Some stupid tutorials wrongly tell users to use cdrdao to rip a
491 // "bin/cue" image, which is in fact a "bin/toc" image. So let's check
492 // that...
493 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
494 if (!strncmp(linebuf, "CD_ROM_XA", 9)) {
495 // Don't proceed further, as this is actually a .toc file rather
496 // than a .cue file.
497 fclose(fi);
498 return parsetoc(isofile);
499 }
500 fseek(fi, 0, SEEK_SET);
501 }
502
38b8102c 503 // build a path for files referenced in .cue
504 strncpy(filepath, cuename, sizeof(filepath));
22bbabf6 505 tmp = strrchr(filepath, '/');
38b8102c 506 if (tmp == NULL)
22bbabf6 507 tmp = strrchr(filepath, '\\');
508 if (tmp != NULL)
509 tmp++;
510 else
38b8102c 511 tmp = filepath;
512 *tmp = 0;
513 filepath[sizeof(filepath) - 1] = 0;
514 incue_fname = tmp;
515 incue_max_len = sizeof(filepath) - (tmp - filepath) - 1;
516
ef79bbde
P		 517 memset(&ti, 0, sizeof(ti));
518
19c03d80 519 file_len = 0;
520 sector_offs = 2 * 75;
521
ef79bbde
P		 522 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
523 strncpy(dummy, linebuf, sizeof(linebuf));
524 token = strtok(dummy, " ");
525
526 if (token == NULL) {
527 continue;
528 }
529
19c03d80 530 if (!strcmp(token, "TRACK")) {
ef79bbde
P		 531 numtracks++;
532
77160d47 533 sector_size = 0;
ef79bbde
P		 534 if (strstr(linebuf, "AUDIO") != NULL) {
535 ti[numtracks].type = CDDA;
77160d47 536 sector_size = 2352;
ef79bbde 537 }
77160d47 538 else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, &sector_size) == 3)
ef79bbde 539 ti[numtracks].type = DATA;
77160d47 540 else {
541 SysPrintf(".cue: failed to parse TRACK\n");
542 ti[numtracks].type = numtracks == 1 ? DATA : CDDA;
ef79bbde 543 }
77160d47 544 if (sector_size == 0)
545 sector_size = 2352;
ef79bbde
P		 546 }
547 else if (!strcmp(token, "INDEX")) {
77160d47 548 if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2)
549 SysPrintf(".cue: failed to parse INDEX\n");
19c03d80 550 tok2msf(time, (char *)&ti[numtracks].start);
ef79bbde 551
19c03d80 552 t = msf2sec(ti[numtracks].start);
77160d47 553 ti[numtracks].start_offset = t * sector_size;
19c03d80 554 t += sector_offs;
ef79bbde 555 sec2msf(t, ti[numtracks].start);
19c03d80 556
557 // default track length to file length
77160d47 558 t = file_len - ti[numtracks].start_offset / sector_size;
19c03d80 559 sec2msf(t, ti[numtracks].length);
560
561 if (numtracks > 1 && ti[numtracks].handle == NULL) {
562 // this track uses the same file as the last,
563 // start of this track is last track's end
564 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
565 sec2msf(t, ti[numtracks - 1].length);
38b8102c 566 }
8aa91443 567 if (numtracks > 1 && pregapOffset == -1)
77160d47 568 pregapOffset = ti[numtracks].start_offset / sector_size;
19c03d80 569 }
570 else if (!strcmp(token, "PREGAP")) {
571 if (sscanf(linebuf, " PREGAP %8s", time) == 1) {
572 tok2msf(time, dummy);
573 sector_offs += msf2sec(dummy);
38b8102c 574 }
8aa91443 575 pregapOffset = -1; // mark to fill track start_offset
19c03d80 576 }
577 else if (!strcmp(token, "FILE")) {
9a9bcd78 578 t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb);
385c023b 579 if (t != 1)
9a9bcd78 580 sscanf(linebuf, " FILE %255s", tmpb);
19c03d80 581
6f4557bf 582 tmp = strrchr(tmpb, '\\');
583 if (tmp == NULL)
584 tmp = strrchr(tmpb, '/');
585 if (tmp != NULL)
586 tmp++;
587 else
588 tmp = tmpb;
589 strncpy(incue_fname, tmp, incue_max_len);
590 ti[numtracks + 1].handle = fopen(filepath, "rb");
ef79bbde 591
19c03d80 592 // update global offset if this is not first file in this .cue
deebc67f 593 if (numtracks + 1 > 1) {
594 multifile = 1;
19c03d80 595 sector_offs += file_len;
deebc67f 596 }
19c03d80 597
598 file_len = 0;
38b8102c 599 if (ti[numtracks + 1].handle == NULL) {
19c03d80 600 SysPrintf(_("\ncould not open: %s\n"), filepath);
601 continue;
38b8102c 602 }
19c03d80 603 fseek(ti[numtracks + 1].handle, 0, SEEK_END);
604 file_len = ftell(ti[numtracks + 1].handle) / 2352;
605
606 if (numtracks == 0 && strlen(isofile) >= 4 &&
607 strcmp(isofile + strlen(isofile) - 4, ".cue") == 0)
608 {
38b8102c 609 // user selected .cue as image file, use it's data track instead
610 fclose(cdHandle);
611 cdHandle = fopen(filepath, "rb");
ef79bbde
P		 612 }
613 }
614 }
615
616 fclose(fi);
617
ef79bbde
P		 618 return 0;
619}
620
621// this function tries to get the .ccd file of the given .img
622// the necessary data is put into the ti (trackinformation)-array
623static int parseccd(const char *isofile) {
624 char ccdname[MAXPATHLEN];
625 FILE *fi;
626 char linebuf[256];
627 unsigned int t;
628
629 numtracks = 0;
630
631 // copy name of the iso and change extension from .img to .ccd
632 strncpy(ccdname, isofile, sizeof(ccdname));
633 ccdname[MAXPATHLEN - 1] = '\0';
634 if (strlen(ccdname) >= 4) {
635 strcpy(ccdname + strlen(ccdname) - 4, ".ccd");
636 }
637 else {
638 return -1;
639 }
640
641 if ((fi = fopen(ccdname, "r")) == NULL) {
642 return -1;
643 }
644
645 memset(&ti, 0, sizeof(ti));
646
647 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
648 if (!strncmp(linebuf, "[TRACK", 6)){
649 numtracks++;
650 }
651 else if (!strncmp(linebuf, "MODE=", 5)) {
652 sscanf(linebuf, "MODE=%d", &t);
653 ti[numtracks].type = ((t == 0) ? CDDA : DATA);
654 }
655 else if (!strncmp(linebuf, "INDEX 1=", 8)) {
656 sscanf(linebuf, "INDEX 1=%d", &t);
657 sec2msf(t + 2 * 75, ti[numtracks].start);
77160d47 658 ti[numtracks].start_offset = t * 2352;
ef79bbde
P		 659
660 // If we've already seen another track, this is its end
661 if (numtracks > 1) {
662 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
663 sec2msf(t, ti[numtracks - 1].length);
664 }
665 }
666 }
667
668 fclose(fi);
669
670 // Fill out the last track's end based on size
671 if (numtracks >= 1) {
672 fseek(cdHandle, 0, SEEK_END);
673 t = ftell(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75;
674 sec2msf(t, ti[numtracks].length);
675 }
676
677 return 0;
678}
679
680// this function tries to get the .mds file of the given .mdf
681// the necessary data is put into the ti (trackinformation)-array
682static int parsemds(const char *isofile) {
683 char mdsname[MAXPATHLEN];
684 FILE *fi;
685 unsigned int offset, extra_offset, l, i;
686 unsigned short s;
687
688 numtracks = 0;
689
690 // copy name of the iso and change extension from .mdf to .mds
691 strncpy(mdsname, isofile, sizeof(mdsname));
692 mdsname[MAXPATHLEN - 1] = '\0';
693 if (strlen(mdsname) >= 4) {
694 strcpy(mdsname + strlen(mdsname) - 4, ".mds");
695 }
696 else {
697 return -1;
698 }
699
700 if ((fi = fopen(mdsname, "rb")) == NULL) {
701 return -1;
702 }
703
704 memset(&ti, 0, sizeof(ti));
705
706 // check if it's a valid mds file
707 fread(&i, 1, sizeof(unsigned int), fi);
708 i = SWAP32(i);
709 if (i != 0x4944454D) {
710 // not an valid mds file
711 fclose(fi);
712 return -1;
713 }
714
715 // get offset to session block
716 fseek(fi, 0x50, SEEK_SET);
717 fread(&offset, 1, sizeof(unsigned int), fi);
718 offset = SWAP32(offset);
719
720 // get total number of tracks
721 offset += 14;
722 fseek(fi, offset, SEEK_SET);
723 fread(&s, 1, sizeof(unsigned short), fi);
724 s = SWAP16(s);
725 numtracks = s;
726
727 // get offset to track blocks
728 fseek(fi, 4, SEEK_CUR);
729 fread(&offset, 1, sizeof(unsigned int), fi);
730 offset = SWAP32(offset);
731
732 // skip lead-in data
733 while (1) {
734 fseek(fi, offset + 4, SEEK_SET);
735 if (fgetc(fi) < 0xA0) {
736 break;
737 }
738 offset += 0x50;
739 }
740
741 // check if the image contains mixed subchannel data
742 fseek(fi, offset + 1, SEEK_SET);
77160d47 743 subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE);
ef79bbde
P		 744
745 // read track data
746 for (i = 1; i <= numtracks; i++) {
747 fseek(fi, offset, SEEK_SET);
748
749 // get the track type
750 ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA);
751 fseek(fi, 8, SEEK_CUR);
752
753 // get the track starting point
754 ti[i].start[0] = fgetc(fi);
755 ti[i].start[1] = fgetc(fi);
756 ti[i].start[2] = fgetc(fi);
757
ef79bbde
P		 758 fread(&extra_offset, 1, sizeof(unsigned int), fi);
759 extra_offset = SWAP32(extra_offset);
760
19c03d80 761 // get track start offset (in .mdf)
762 fseek(fi, offset + 0x28, SEEK_SET);
763 fread(&l, 1, sizeof(unsigned int), fi);
764 l = SWAP32(l);
77160d47 765 ti[i].start_offset = l;
19c03d80 766
8aa91443 767 // get pregap
768 fseek(fi, extra_offset, SEEK_SET);
769 fread(&l, 1, sizeof(unsigned int), fi);
770 l = SWAP32(l);
771 if (l != 0 && i > 1)
77160d47 772 pregapOffset = msf2sec(ti[i].start);
8aa91443 773
774 // get the track length
775 fread(&l, 1, sizeof(unsigned int), fi);
776 l = SWAP32(l);
777 sec2msf(l, ti[i].length);
778
ef79bbde
P		 779 offset += 0x50;
780 }
781
782 fclose(fi);
783 return 0;
784}
785
0877957a 786static int handlepbp(const char *isofile) {
9a92bffb 787 struct {
788 unsigned int sig;
789 unsigned int dontcare[8];
790 unsigned int psar_offs;
791 } pbp_hdr;
792 struct {
793 unsigned char type;
794 unsigned char pad0;
795 unsigned char track;
796 char index0[3];
797 char pad1;
798 char index1[3];
799 } toc_entry;
800 struct {
801 unsigned int offset;
802 unsigned int size;
803 unsigned int dontcare[6];
804 } index_entry;
0c2871a7 805 char psar_sig[11];
cc376814 806 off_t psisoimg_offs, cdimg_base;
807 unsigned int t, cd_length;
808 unsigned int offsettab[8];
9a92bffb 809 const char *ext = NULL;
810 int i, ret;
811
812 if (strlen(isofile) >= 4)
813 ext = isofile + strlen(isofile) - 4;
814 if (ext == NULL || (strcmp(ext, ".pbp") != 0 && strcmp(ext, ".PBP") != 0))
815 return -1;
816
cc376814 817 fseeko(cdHandle, 0, SEEK_SET);
9726a4af 818
9a92bffb 819 numtracks = 0;
820
821 ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle);
822 if (ret != sizeof(pbp_hdr)) {
f29fbd53 823 SysPrintf("failed to read pbp\n");
9a92bffb 824 goto fail_io;
825 }
826
cc376814 827 ret = fseeko(cdHandle, pbp_hdr.psar_offs, SEEK_SET);
9a92bffb 828 if (ret != 0) {
f29fbd53 829 SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs);
9a92bffb 830 goto fail_io;
831 }
832
0c2871a7 833 psisoimg_offs = pbp_hdr.psar_offs;
9a92bffb 834 fread(psar_sig, 1, sizeof(psar_sig), cdHandle);
0c2871a7 835 psar_sig[10] = 0;
836 if (strcmp(psar_sig, "PSTITLEIMG") == 0) {
837 // multidisk image?
cc376814 838 ret = fseeko(cdHandle, pbp_hdr.psar_offs + 0x200, SEEK_SET);
0c2871a7 839 if (ret != 0) {
f29fbd53 840 SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs + 0x200);
0c2871a7 841 goto fail_io;
842 }
843
844 if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) {
f29fbd53 845 SysPrintf("failed to read offsettab\n");
0c2871a7 846 goto fail_io;
847 }
848
849 for (i = 0; i < sizeof(offsettab) / sizeof(offsettab[0]); i++) {
850 if (offsettab[i] == 0)
851 break;
852 }
853 cdrIsoMultidiskCount = i;
854 if (cdrIsoMultidiskCount == 0) {
f29fbd53 855 SysPrintf("multidisk eboot has 0 images?\n");
0c2871a7 856 goto fail_io;
857 }
858
859 if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount)
860 cdrIsoMultidiskSelect = 0;
861
862 psisoimg_offs += offsettab[cdrIsoMultidiskSelect];
863
cc376814 864 ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET);
0c2871a7 865 if (ret != 0) {
cc376814 866 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs);
0c2871a7 867 goto fail_io;
868 }
869
870 fread(psar_sig, 1, sizeof(psar_sig), cdHandle);
871 psar_sig[10] = 0;
872 }
873
874 if (strcmp(psar_sig, "PSISOIMG00") != 0) {
f29fbd53 875 SysPrintf("bad psar_sig: %s\n", psar_sig);
9a92bffb 876 goto fail_io;
877 }
878
879 // seek to TOC
cc376814 880 ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET);
9a92bffb 881 if (ret != 0) {
cc376814 882 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800);
9a92bffb 883 goto fail_io;
884 }
885
886 // first 3 entries are special
887 fseek(cdHandle, sizeof(toc_entry), SEEK_CUR);
888 fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
889 numtracks = btoi(toc_entry.index1[0]);
890
891 fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
892 cd_length = btoi(toc_entry.index1[0]) * 60 * 75 +
893 btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]);
894
895 for (i = 1; i <= numtracks; i++) {
896 fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
897
898 ti[i].type = (toc_entry.type == 1) ? CDDA : DATA;
899
900 ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 +
901 btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]);
77160d47 902 ti[i].start_offset *= 2352;
9a92bffb 903 ti[i].start[0] = btoi(toc_entry.index1[0]);
904 ti[i].start[1] = btoi(toc_entry.index1[1]);
905 ti[i].start[2] = btoi(toc_entry.index1[2]);
906
907 if (i > 1) {
908 t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start);
909 sec2msf(t, ti[i - 1].length);
910 }
911 }
77160d47 912 t = cd_length - ti[numtracks].start_offset / 2352;
9a92bffb 913 sec2msf(t, ti[numtracks].length);
914
915 // seek to ISO index
cc376814 916 ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET);
9a92bffb 917 if (ret != 0) {
f29fbd53 918 SysPrintf("failed to seek to ISO index\n");
9a92bffb 919 goto fail_io;
920 }
921
922 compr_img = calloc(1, sizeof(*compr_img));
923 if (compr_img == NULL)
924 goto fail_io;
925
0877957a 926 compr_img->block_shift = 4;
9a92bffb 927 compr_img->current_block = (unsigned int)-1;
928
929 compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry);
930 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
931 if (compr_img->index_table == NULL)
932 goto fail_io;
933
0c2871a7 934 cdimg_base = psisoimg_offs + 0x100000;
9a92bffb 935 for (i = 0; i < compr_img->index_len; i++) {
936 ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle);
937 if (ret != sizeof(index_entry)) {
f29fbd53 938 SysPrintf("failed to read index_entry #%d\n", i);
9a92bffb 939 goto fail_index;
940 }
941
942 if (index_entry.size == 0)
943 break;
944
945 compr_img->index_table[i] = cdimg_base + index_entry.offset;
946 }
947 compr_img->index_table[i] = cdimg_base + index_entry.offset + index_entry.size;
948
949 return 0;
950
951fail_index:
952 free(compr_img->index_table);
953 compr_img->index_table = NULL;
954fail_io:
0877957a 955 if (compr_img != NULL) {
956 free(compr_img);
957 compr_img = NULL;
958 }
959 return -1;
960}
961
962static int handlecbin(const char *isofile) {
963 struct
964 {
965 char magic[4];
966 unsigned int header_size;
967 unsigned long long total_bytes;
968 unsigned int block_size;
969 unsigned char ver; // 1
970 unsigned char align;
971 unsigned char rsv_06[2];
972 } ciso_hdr;
973 const char *ext = NULL;
cc376814 974 unsigned int *index_table = NULL;
0c2871a7 975 unsigned int index = 0, plain;
0877957a 976 int i, ret;
977
978 if (strlen(isofile) >= 5)
979 ext = isofile + strlen(isofile) - 5;
980 if (ext == NULL || (strcasecmp(ext + 1, ".cbn") != 0 && strcasecmp(ext, ".cbin") != 0))
981 return -1;
982
9726a4af 983 fseek(cdHandle, 0, SEEK_SET);
984
0877957a 985 ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle);
986 if (ret != sizeof(ciso_hdr)) {
f29fbd53 987 SysPrintf("failed to read ciso header\n");
0877957a 988 return -1;
989 }
990
991 if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) {
f29fbd53 992 SysPrintf("bad ciso header\n");
0877957a 993 return -1;
994 }
995 if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) {
cc376814 996 ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET);
0877957a 997 if (ret != 0) {
f29fbd53 998 SysPrintf("failed to seek to %x\n", ciso_hdr.header_size);
0877957a 999 return -1;
1000 }
1001 }
1002
1003 compr_img = calloc(1, sizeof(*compr_img));
1004 if (compr_img == NULL)
1005 goto fail_io;
1006
1007 compr_img->block_shift = 0;
1008 compr_img->current_block = (unsigned int)-1;
1009
1010 compr_img->index_len = ciso_hdr.total_bytes / ciso_hdr.block_size;
cc376814 1011 index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0]));
1012 if (index_table == NULL)
0877957a 1013 goto fail_io;
1014
cc376814 1015 ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle);
0877957a 1016 if (ret != compr_img->index_len) {
f29fbd53 1017 SysPrintf("failed to read index table\n");
0877957a 1018 goto fail_index;
1019 }
1020
cc376814 1021 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
1022 if (compr_img->index_table == NULL)
1023 goto fail_index;
1024
0877957a 1025 for (i = 0; i < compr_img->index_len + 1; i++) {
cc376814 1026 index = index_table[i];
0877957a 1027 plain = index & 0x80000000;
1028 index &= 0x7fffffff;
cc376814 1029 compr_img->index_table[i] = (off_t)index << ciso_hdr.align;
1030 if (plain)
1031 compr_img->index_table[i] |= OFF_T_MSB;
0877957a 1032 }
0877957a 1033
1034 return 0;
1035
1036fail_index:
cc376814 1037 free(index_table);
0877957a 1038fail_io:
1039 if (compr_img != NULL) {
1040 free(compr_img);
1041 compr_img = NULL;
1042 }
9a92bffb 1043 return -1;
1044}
1045
b0ec2e6d 1046#ifdef HAVE_CHD
ce188d4d 1047static int handlechd(const char *isofile) {
1048 chd_img = calloc(1, sizeof(*chd_img));
1049 if (chd_img == NULL)
1050 goto fail_io;
1051
1052 if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE)
1053 goto fail_io;
1054
1055 chd_img->header = chd_get_header(chd_img->chd);
1056
1057 chd_img->buffer = malloc(chd_img->header->hunkbytes);
1058 if (chd_img->buffer == NULL)
1059 goto fail_io;
1060
1061 chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE);
1062 chd_img->current_hunk = (unsigned int)-1;
1063
1064 cddaBigEndian = TRUE;
1065
1066 numtracks = 0;
60bac94c 1067 int frame_offset = 150;
ce188d4d 1068 memset(ti, 0, sizeof(ti));
1069
1070 while (1)
1071 {
1072 struct {
1073 char type[64];
1074 char subtype[32];
1075 char pgtype[32];
1076 char pgsub[32];
1077 uint32_t track;
1078 uint32_t frames;
1079 uint32_t pregap;
1080 uint32_t postgap;
1081 } md = {};
1082 char meta[256];
1083 uint32_t meta_size = 0;
1084
1085 if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
1086 sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap);
1087 else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
1088 sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames);
1089 else
1090 break;
1091
1092 ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA;
1093
1094 sec2msf(frame_offset + md.pregap, ti[md.track].start);
60bac94c 1095 sec2msf(md.frames - md.pregap, ti[md.track].length);
ce188d4d 1096
1097 if (!strcmp(md.type, md.pgtype))
1098 frame_offset += md.pregap;
1099
1100 ti[md.track].start_offset = frame_offset * CD_FRAMESIZE_RAW;
1101
60bac94c 1102 frame_offset += md.frames;
ce188d4d 1103 frame_offset += md.postgap;
1104 numtracks++;
1105 }
1106
1107 if (numtracks)
1108 return 0;
1109
1110fail_io:
1111 if (chd_img != NULL) {
1112 free(chd_img->buffer);
1113 free(chd_img);
1114 chd_img = NULL;
1115 }
1116 return -1;
1117}
b0ec2e6d 1118#endif
ce188d4d 1119
ef79bbde
P		 1120// this function tries to get the .sub file of the given .img
1121static int opensubfile(const char *isoname) {
1122 char subname[MAXPATHLEN];
1123
1124 // copy name of the iso and change extension from .img to .sub
1125 strncpy(subname, isoname, sizeof(subname));
1126 subname[MAXPATHLEN - 1] = '\0';
1127 if (strlen(subname) >= 4) {
1128 strcpy(subname + strlen(subname) - 4, ".sub");
1129 }
1130 else {
1131 return -1;
1132 }
1133
1134 subHandle = fopen(subname, "rb");
1135 if (subHandle == NULL) {
1136 return -1;
1137 }
1138
1139 return 0;
1140}
1141
ae4e7dc9 1142static int opensbifile(const char *isoname) {
ba1cce07 1143 char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0";
ae4e7dc9 1144 int s;
1145
1146 strncpy(sbiname, isoname, sizeof(sbiname));
1147 sbiname[MAXPATHLEN - 1] = '\0';
1148 if (strlen(sbiname) >= 4) {
ba1cce07
S		 1149 if (cdrIsoMultidiskCount > 1) {
1150 sprintf(disknum, "_%i.sbi", cdrIsoMultidiskSelect + 1);
1151 strcpy(sbiname + strlen(sbiname) - 4, disknum);
1152 }
1153 else
1154 strcpy(sbiname + strlen(sbiname) - 4, ".sbi");
ae4e7dc9 1155 }
1156 else {
1157 return -1;
1158 }
1159
1160 fseek(cdHandle, 0, SEEK_END);
1161 s = ftell(cdHandle) / 2352;
1162
1163 return LoadSBI(sbiname, s);
1164}
1165
679b71e2
JW		 1166#ifdef _WIN32
1167static void readThreadStop() {}
1168static void readThreadStart() {}
1169#else
1170static pthread_t read_thread_id;
1171
1172static pthread_cond_t read_thread_msg_avail;
1173static pthread_cond_t read_thread_msg_done;
1174static pthread_mutex_t read_thread_msg_lock;
1175
1176static pthread_cond_t sectorbuffer_cond;
1177static pthread_mutex_t sectorbuffer_lock;
1178
1179static boolean read_thread_running = FALSE;
1180static int read_thread_sector_start = -1;
1181static int read_thread_sector_end = -1;
1182
1183typedef struct {
1184 int sector;
1185 long ret;
1186 unsigned char data[CD_FRAMESIZE_RAW];
1187} SectorBufferEntry;
1188
1189#define SECTOR_BUFFER_SIZE 4096
1190
1191static SectorBufferEntry *sectorbuffer;
1192static size_t sectorbuffer_index;
1193
1194int (*sync_cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
1195unsigned char *(*sync_CDR_getBuffer)(void);
1196
1197static unsigned char * CALLBACK ISOgetBuffer_async(void);
1198static int cdread_async(FILE *f, unsigned int base, void *dest, int sector);
1199
1200static void *readThreadMain(void *param) {
1201 int max_sector = -1;
1202 int requested_sector_start = -1;
1203 int requested_sector_end = -1;
1204 int last_read_sector = -1;
1205 int index = 0;
1206
1207 int ra_sector = -1;
1208 int max_ra = 128;
1209 int initial_ra = 1;
1210 int speedmult_ra = 4;
1211
1212 int ra_count = 0;
1213 int how_far_ahead = 0;
1214
1215 unsigned char tmpdata[CD_FRAMESIZE_RAW];
1216 long ret;
1217
1218 max_sector = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
1219
1220 while(1) {
1221 pthread_mutex_lock(&read_thread_msg_lock);
1222
1223 // If we don't have readahead and we don't have a sector request, wait for one.
1224 // If we still have readahead to go, don't block, just keep going.
1225 // And if we ever have a sector request pending, acknowledge and reset it.
1226
1227 if (!ra_count) {
1228 if (read_thread_sector_start == -1 && read_thread_running) {
1229 pthread_cond_wait(&read_thread_msg_avail, &read_thread_msg_lock);
1230 }
1231 }
1232
1233 if (read_thread_sector_start != -1) {
1234 requested_sector_start = read_thread_sector_start;
1235 requested_sector_end = read_thread_sector_end;
1236 read_thread_sector_start = -1;
1237 read_thread_sector_end = -1;
1238 pthread_cond_signal(&read_thread_msg_done);
1239 }
1240
1241 pthread_mutex_unlock(&read_thread_msg_lock);
1242
1243 if (!read_thread_running)
1244 break;
1245
1246 // Readahead code, based on the implementation in mednafen psx's cdromif.cpp
1247 if (requested_sector_start != -1) {
1248 if (last_read_sector != -1 && last_read_sector == (requested_sector_start - 1)) {
1249 how_far_ahead = ra_sector - requested_sector_end;
1250
1251 if(how_far_ahead <= max_ra)
1252 ra_count = (max_ra - how_far_ahead + 1 ? max_ra - how_far_ahead + 1 : speedmult_ra);
1253 else
1254 ra_count++;
1255 } else if (requested_sector_end != last_read_sector) {
1256 ra_sector = requested_sector_end;
1257 ra_count = initial_ra;
1258 }
1259
1260 last_read_sector = requested_sector_end;
1261 }
1262
1263 // check for end of CD
1264 if (ra_count && ra_sector >= max_sector) {
1265 ra_count = 0;
1266 }
1267
1268 if (ra_count) {
1269
1270 index = ra_sector % SECTOR_BUFFER_SIZE;
1271 pthread_mutex_lock(&sectorbuffer_lock);
1272 if (sectorbuffer[index].sector != ra_sector) {
1273 pthread_mutex_unlock(&sectorbuffer_lock);
1274
1275 ret = sync_cdimg_read_func(cdHandle, 0, tmpdata, ra_sector);
1276
1277 pthread_mutex_lock(&sectorbuffer_lock);
1278 sectorbuffer[index].ret = ret;
1279 sectorbuffer[index].sector = ra_sector;
1280 memcpy(sectorbuffer[index].data, tmpdata, CD_FRAMESIZE_RAW);
1281 }
1282 pthread_cond_signal(&sectorbuffer_cond);
1283 pthread_mutex_unlock(&sectorbuffer_lock);
1284
1285 ra_sector++;
1286 ra_count--;
1287 }
1288 }
1289
1290 return NULL;
1291}
1292
1293static void readThreadStop() {
1294 if (read_thread_running == TRUE) {
1295 read_thread_running = FALSE;
1296 pthread_cond_signal(&read_thread_msg_avail);
1297 pthread_join(read_thread_id, NULL);
1298 }
1299
1300 pthread_cond_destroy(&read_thread_msg_done);
1301 pthread_cond_destroy(&read_thread_msg_avail);
1302 pthread_mutex_destroy(&read_thread_msg_lock);
1303
1304 pthread_cond_destroy(&sectorbuffer_cond);
1305 pthread_mutex_destroy(&sectorbuffer_lock);
1306
1307 CDR_getBuffer = sync_CDR_getBuffer;
1308 cdimg_read_func = sync_cdimg_read_func;
1309
1310 free(sectorbuffer);
1311 sectorbuffer = NULL;
1312}
1313
1314static void readThreadStart() {
1315 SysPrintf("Starting async CD thread\n");
1316
1317 if (read_thread_running == TRUE)
1318 return;
1319
1320 read_thread_running = TRUE;
1321 read_thread_sector_start = -1;
1322 read_thread_sector_end = -1;
1323 sectorbuffer_index = 0;
1324
1325 sectorbuffer = calloc(SECTOR_BUFFER_SIZE, sizeof(SectorBufferEntry));
1326 if(!sectorbuffer)
1327 goto error;
1328
1329 sectorbuffer[0].sector = -1; // Otherwise we might think we've already fetched sector 0!
1330
1331 sync_CDR_getBuffer = CDR_getBuffer;
1332 CDR_getBuffer = ISOgetBuffer_async;
1333 sync_cdimg_read_func = cdimg_read_func;
1334 cdimg_read_func = cdread_async;
1335
1336 if (pthread_cond_init(&read_thread_msg_avail, NULL) ||
1337 pthread_cond_init(&read_thread_msg_done, NULL) ||
1338 pthread_mutex_init(&read_thread_msg_lock, NULL) ||
1339 pthread_cond_init(&sectorbuffer_cond, NULL) ||
1340 pthread_mutex_init(&sectorbuffer_lock, NULL) ||
1341 pthread_create(&read_thread_id, NULL, readThreadMain, NULL))
1342 goto error;
1343
1344 return;
1345
1346 error:
1347 SysPrintf("Error starting async CD thread\n");
1348 SysPrintf("Falling back to sync\n");
1349
1350 readThreadStop();
1351}
1352#endif
1353
77160d47 1354static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1355{
77160d47 1356 fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET);
81abe4d5 1357 return fread(dest, 1, CD_FRAMESIZE_RAW, f);
9a92bffb 1358}
1359
77160d47 1360static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1361{
1362 int ret;
1363
77160d47 1364 fseek(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET);
81abe4d5 1365 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
9a92bffb 1366 fread(subbuffer, 1, SUB_FRAMESIZE, f);
1367
1368 if (subChanRaw) DecodeRawSubData();
1369
1370 return ret;
1371}
1372
2dd6a826 1373static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size)
9a92bffb 1374{
1375 static z_stream z;
1376 int ret = 0;
1377
1378 if (z.zalloc == NULL) {
1379 // XXX: one-time leak here..
1380 z.next_in = Z_NULL;
1381 z.avail_in = 0;
1382 z.zalloc = Z_NULL;
1383 z.zfree = Z_NULL;
1384 z.opaque = Z_NULL;
1385 ret = inflateInit2(&z, -15);
1386 }
1387 else
1388 ret = inflateReset(&z);
1389 if (ret != Z_OK)
1390 return ret;
1391
1392 z.next_in = in;
1393 z.avail_in = in_size;
1394 z.next_out = out;
1395 z.avail_out = *out_size;
1396
1397 ret = inflate(&z, Z_NO_FLUSH);
1398 //inflateEnd(&z);
1399
1400 *out_size -= z.avail_out;
1401 return ret == 1 ? 0 : ret;
1402}
1403
77160d47 1404static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1405{
0877957a 1406 unsigned long cdbuffer_size, cdbuffer_size_expect;
cc376814 1407 unsigned int size;
0877957a 1408 int is_compressed;
cc376814 1409 off_t start_byte;
9a92bffb 1410 int ret, block;
1411
77160d47 1412 if (base)
1413 sector += base / 2352;
1414
0877957a 1415 block = sector >> compr_img->block_shift;
1416 compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1);
9a92bffb 1417
1418 if (block == compr_img->current_block) {
1419 //printf("hit sect %d\n", sector);
1420 goto finish;
1421 }
1422
1423 if (sector >= compr_img->index_len * 16) {
f29fbd53 1424 SysPrintf("sector %d is past img end\n", sector);
9a92bffb 1425 return -1;
1426 }
1427
cc376814 1428 start_byte = compr_img->index_table[block] & ~OFF_T_MSB;
1429 if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) {
1430 SysPrintf("seek error for block %d at %llx: ",
1431 block, (long long)start_byte);
9a92bffb 1432 perror(NULL);
1433 return -1;
1434 }
1435
cc376814 1436 is_compressed = !(compr_img->index_table[block] & OFF_T_MSB);
1437 size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte;
9a92bffb 1438 if (size > sizeof(compr_img->buff_compressed)) {
f29fbd53 1439 SysPrintf("block %d is too large: %u\n", block, size);
9a92bffb 1440 return -1;
1441 }
1442
0877957a 1443 if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0],
1444 1, size, cdHandle) != size) {
f29fbd53 1445 SysPrintf("read error for block %d at %x: ", block, start_byte);
9a92bffb 1446 perror(NULL);
1447 return -1;
1448 }
1449
0877957a 1450 if (is_compressed) {
1451 cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift;
1452 cdbuffer_size = cdbuffer_size_expect;
2dd6a826 1453 ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size);
0877957a 1454 if (ret != 0) {
f29fbd53 1455 SysPrintf("uncompress failed with %d for block %d, sector %d\n",
0877957a 1456 ret, block, sector);
1457 return -1;
1458 }
1459 if (cdbuffer_size != cdbuffer_size_expect)
f29fbd53 1460 SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size,
0877957a 1461 cdbuffer_size_expect, sector);
9a92bffb 1462 }
9a92bffb 1463
1464 // done at last!
1465 compr_img->current_block = block;
1466
1467finish:
1468 if (dest != cdbuffer) // copy avoid HACK
81abe4d5 1469 memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk],
1470 CD_FRAMESIZE_RAW);
1471 return CD_FRAMESIZE_RAW;
9a92bffb 1472}
1473
b0ec2e6d 1474#ifdef HAVE_CHD
ce188d4d 1475static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector)
1476{
1477 int hunk;
1478
1479 if (base)
1480 sector += base / CD_FRAMESIZE_RAW;
1481
1482 hunk = sector / chd_img->sectors_per_hunk;
1483 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1484
1485 if (hunk == chd_img->current_hunk)
1486 goto finish;
1487
1488 chd_read(chd_img->chd, hunk, chd_img->buffer);
1489
1490 chd_img->current_hunk = hunk;
1491
1492finish:
1493 if (dest != cdbuffer) // copy avoid HACK
1494 memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk],
1495 CD_FRAMESIZE_RAW);
1496 return CD_FRAMESIZE_RAW;
1497}
b0ec2e6d 1498#endif
77160d47 1499static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector)
9a92bffb 1500{
1501 int ret;
1502
77160d47 1503 fseek(f, base + sector * 2048, SEEK_SET);
81abe4d5 1504 ret = fread((char *)dest + 12 * 2, 1, 2048, f);
9a92bffb 1505
1506 // not really necessary, fake mode 2 header
81abe4d5 1507 memset(cdbuffer, 0, 12 * 2);
1508 sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]);
1509 cdbuffer[12 + 3] = 1;
9a92bffb 1510
1511 return ret;
1512}
1513
679b71e2
JW		 1514#ifndef _WIN32
1515
1516static int cdread_async(FILE *f, unsigned int base, void *dest, int sector) {
1517 boolean found = FALSE;
1518 int i = sector % SECTOR_BUFFER_SIZE;
1519 long ret;
1520
1521 if (f != cdHandle || base != 0 || dest != cdbuffer) {
1522 // Async reads are only supported for cdbuffer, so call the sync
1523 // function directly.
1524 return sync_cdimg_read_func(f, base, dest, sector);
1525 }
1526
1527 pthread_mutex_lock(&read_thread_msg_lock);
1528
1529 // Only wait if we're not trying to read the next sector and
1530 // sector_start is set (meaning the last request hasn't been
1531 // processed yet)
1532 while(read_thread_sector_start != -1 && read_thread_sector_end + 1 != sector) {
1533 pthread_cond_wait(&read_thread_msg_done, &read_thread_msg_lock);
1534 }
1535
1536 if (read_thread_sector_start == -1)
1537 read_thread_sector_start = sector;
1538
1539 read_thread_sector_end = sector;
1540 pthread_cond_signal(&read_thread_msg_avail);
1541 pthread_mutex_unlock(&read_thread_msg_lock);
1542
1543 do {
1544 pthread_mutex_lock(&sectorbuffer_lock);
1545 if (sectorbuffer[i].sector == sector) {
1546 sectorbuffer_index = i;
1547 ret = sectorbuffer[i].ret;
1548 found = TRUE;
1549 }
1550
1551 if (!found) {
1552 pthread_cond_wait(&sectorbuffer_cond, &sectorbuffer_lock);
1553 }
1554 pthread_mutex_unlock(&sectorbuffer_lock);
1555 } while (!found);
1556
1557 return ret;
1558}
1559
1560#endif
1561
9a92bffb 1562static unsigned char * CALLBACK ISOgetBuffer_compr(void) {
1563 return compr_img->buff_raw[compr_img->sector_in_blk] + 12;
1564}
1565
b0ec2e6d 1566#ifdef HAVE_CHD
ce188d4d 1567static unsigned char * CALLBACK ISOgetBuffer_chd(void) {
1568 return chd_img->buffer[chd_img->sector_in_hunk] + 12;
1569}
b0ec2e6d 1570#endif
ce188d4d 1571
679b71e2
JW		 1572#ifndef _WIN32
1573static unsigned char * CALLBACK ISOgetBuffer_async(void) {
1574 unsigned char *buffer;
1575 pthread_mutex_lock(&sectorbuffer_lock);
1576 buffer = sectorbuffer[sectorbuffer_index].data;
1577 pthread_mutex_unlock(&sectorbuffer_lock);
1578 return buffer + 12;
1579}
1580
1581#endif
1582
9a92bffb 1583static unsigned char * CALLBACK ISOgetBuffer(void) {
81abe4d5 1584 return cdbuffer + 12;
9a92bffb 1585}
1586
ef79bbde
P		 1587static void PrintTracks(void) {
1588 int i;
1589
1590 for (i = 1; i <= numtracks; i++) {
1591 SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"),
1592 i, (ti[i].type == DATA ? "DATA" : "AUDIO"),
1593 ti[i].start[0], ti[i].start[1], ti[i].start[2],
1594 ti[i].length[0], ti[i].length[1], ti[i].length[2]);
1595 }
1596}
1597
1598// This function is invoked by the front-end when opening an ISO
1599// file for playback
1600static long CALLBACK ISOopen(void) {
9a92bffb 1601 boolean isMode1ISO = FALSE;
689e0447 1602 char alt_bin_filename[MAXPATHLEN];
1603 const char *bin_filename;
208177a7 1604 char image_str[1024] = {0};
9a92bffb 1605
ef79bbde
P		 1606 if (cdHandle != NULL) {
1607 return 0; // it's already open
1608 }
1609
1610 cdHandle = fopen(GetIsoFile(), "rb");
1611 if (cdHandle == NULL) {
2e058581 1612 SysPrintf(_("Could't open '%s' for reading: %s\n"),
1613 GetIsoFile(), strerror(errno));
ef79bbde
P		 1614 return -1;
1615 }
1616
208177a7 1617 sprintf(image_str, "Loaded CD Image: %s", GetIsoFile());
ef79bbde
P		 1618
1619 cddaBigEndian = FALSE;
1620 subChanMixed = FALSE;
1621 subChanRaw = FALSE;
8aa91443 1622 pregapOffset = 0;
0c2871a7 1623 cdrIsoMultidiskCount = 1;
deebc67f 1624 multifile = 0;
ef79bbde 1625
9a92bffb 1626 CDR_getBuffer = ISOgetBuffer;
1627 cdimg_read_func = cdread_normal;
1628
92f43ab0 1629 if (parsetoc(GetIsoFile()) == 0) {
208177a7 1630 strcat(image_str, "[+toc]");
ef79bbde
P		 1631 }
1632 else if (parseccd(GetIsoFile()) == 0) {
208177a7 1633 strcat(image_str, "[+ccd]");
ef79bbde
P		 1634 }
1635 else if (parsemds(GetIsoFile()) == 0) {
208177a7 1636 strcat(image_str, "[+mds]");
ef79bbde 1637 }
92f43ab0 1638 else if (parsecue(GetIsoFile()) == 0) {
208177a7 1639 strcat(image_str, "[+cue]");
92f43ab0 1640 }
0877957a 1641 if (handlepbp(GetIsoFile()) == 0) {
208177a7 1642 strcat(image_str, "[+pbp]");
9a92bffb 1643 CDR_getBuffer = ISOgetBuffer_compr;
1644 cdimg_read_func = cdread_compressed;
1645 }
0877957a 1646 else if (handlecbin(GetIsoFile()) == 0) {
208177a7 1647 strcat(image_str, "[+cbin]");
0877957a 1648 CDR_getBuffer = ISOgetBuffer_compr;
1649 cdimg_read_func = cdread_compressed;
1650 }
b0ec2e6d 1651#ifdef HAVE_CHD
ce188d4d 1652 else if (handlechd(GetIsoFile()) == 0) {
208177a7 1653 strcat(image_str, "[+chd]");
ce188d4d 1654 CDR_getBuffer = ISOgetBuffer_chd;
1655 cdimg_read_func = cdread_chd;
1656 }
b0ec2e6d 1657#endif
ef79bbde
P		 1658
1659 if (!subChanMixed && opensubfile(GetIsoFile()) == 0) {
208177a7 1660 strcat(image_str, "[+sub]");
ef79bbde 1661 }
ae4e7dc9 1662 if (opensbifile(GetIsoFile()) == 0) {
208177a7 1663 strcat(image_str, "[+sbi]");
ae4e7dc9 1664 }
ef79bbde 1665
cc376814 1666 fseeko(cdHandle, 0, SEEK_END);
c9e5423e 1667
1668 // maybe user selected metadata file instead of main .bin ..
689e0447 1669 bin_filename = GetIsoFile();
cc376814 1670 if (ftello(cdHandle) < 2352 * 0x10) {
c9e5423e 1671 static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
689e0447 1672 FILE *tmpf = NULL;
c9e5423e 1673 size_t i;
689e0447 1674 char *p;
c9e5423e 1675
689e0447 1676 strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename));
1677 alt_bin_filename[MAXPATHLEN - 1] = '\0';
1678 if (strlen(alt_bin_filename) >= 4) {
1679 p = alt_bin_filename + strlen(alt_bin_filename) - 4;
c9e5423e 1680 for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
1681 strcpy(p, exts[i]);
689e0447 1682 tmpf = fopen(alt_bin_filename, "rb");
1683 if (tmpf != NULL)
c9e5423e 1684 break;
c9e5423e 1685 }
1686 }
689e0447 1687 if (tmpf != NULL) {
1688 bin_filename = alt_bin_filename;
1689 fclose(cdHandle);
1690 cdHandle = tmpf;
cc376814 1691 fseeko(cdHandle, 0, SEEK_END);
689e0447 1692 }
c9e5423e 1693 }
1694
1695 // guess whether it is mode1/2048
cc376814 1696 if (ftello(cdHandle) % 2048 == 0) {
9a92bffb 1697 unsigned int modeTest = 0;
1698 fseek(cdHandle, 0, SEEK_SET);
1699 fread(&modeTest, 4, 1, cdHandle);
1700 if (SWAP32(modeTest) != 0xffffff00) {
208177a7 1701 strcat(image_str, "[2048]");
9a92bffb 1702 isMode1ISO = TRUE;
1703 }
1704 }
1705 fseek(cdHandle, 0, SEEK_SET);
1706
208177a7 1707 SysPrintf("%s.\n", image_str);
ef79bbde
P		 1708
1709 PrintTracks();
1710
9a92bffb 1711 if (subChanMixed)
1712 cdimg_read_func = cdread_sub_mixed;
1713 else if (isMode1ISO)
1714 cdimg_read_func = cdread_2048;
1715
38b8102c 1716 // make sure we have another handle open for cdda
1717 if (numtracks > 1 && ti[1].handle == NULL) {
689e0447 1718 ti[1].handle = fopen(bin_filename, "rb");
38b8102c 1719 }
77160d47 1720 cdda_cur_sector = 0;
1721 cdda_file_offset = 0;
38b8102c 1722
679b71e2
JW		 1723 if (Config.AsyncCD) {
1724 readThreadStart();
1725 }
ef79bbde
P		 1726 return 0;
1727}
1728
1729static long CALLBACK ISOclose(void) {
38b8102c 1730 int i;
1731
ef79bbde
P		 1732 if (cdHandle != NULL) {
1733 fclose(cdHandle);
1734 cdHandle = NULL;
1735 }
1736 if (subHandle != NULL) {
1737 fclose(subHandle);
1738 subHandle = NULL;
1739 }
1740 stopCDDA();
38b8102c 1741 cddaHandle = NULL;
1742
9a92bffb 1743 if (compr_img != NULL) {
1744 free(compr_img->index_table);
1745 free(compr_img);
1746 compr_img = NULL;
1747 }
1748
b0ec2e6d 1749#ifdef HAVE_CHD
ce188d4d 1750 if (chd_img != NULL) {
1751 chd_close(chd_img->chd);
1752 free(chd_img->buffer);
1753 free(chd_img);
1754 chd_img = NULL;
1755 }
b0ec2e6d 1756#endif
ce188d4d 1757
38b8102c 1758 for (i = 1; i <= numtracks; i++) {
1759 if (ti[i].handle != NULL) {
1760 fclose(ti[i].handle);
1761 ti[i].handle = NULL;
1762 }
1763 }
1764 numtracks = 0;
c0ee7ac6 1765 ti[1].type = 0;
ae4e7dc9 1766 UnloadSBI();
38b8102c 1767
c0ee7ac6 1768 memset(cdbuffer, 0, sizeof(cdbuffer));
1769 CDR_getBuffer = ISOgetBuffer;
1770
49942a16 1771 if (Config.AsyncCD) {
1772 readThreadStop();
1773 }
1774
38b8102c 1775 return 0;
1776}
1777
1778static long CALLBACK ISOinit(void) {
1779 assert(cdHandle == NULL);
1780 assert(subHandle == NULL);
1781
1782 return 0; // do nothing
1783}
1784
1785static long CALLBACK ISOshutdown(void) {
1786 ISOclose();
ef79bbde
P		 1787 return 0;
1788}
1789
1790// return Starting and Ending Track
1791// buffer:
1792// byte 0 - start track
1793// byte 1 - end track
1794static long CALLBACK ISOgetTN(unsigned char *buffer) {
1795 buffer[0] = 1;
1796
1797 if (numtracks > 0) {
1798 buffer[1] = numtracks;
1799 }
1800 else {
1801 buffer[1] = 1;
1802 }
1803
1804 return 0;
1805}
1806
1807// return Track Time
1808// buffer:
1809// byte 0 - frame
1810// byte 1 - second
1811// byte 2 - minute
1812static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) {
858ad511 1813 if (track == 0) {
858ad511 1814 unsigned int sect;
1815 unsigned char time[3];
1816 sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
ab948f7e 1817 sec2msf(sect, (char *)time);
858ad511 1818 buffer[2] = time[0];
1819 buffer[1] = time[1];
1820 buffer[0] = time[2];
1821 }
1822 else if (numtracks > 0 && track <= numtracks) {
ef79bbde
P		 1823 buffer[2] = ti[track].start[0];
1824 buffer[1] = ti[track].start[1];
1825 buffer[0] = ti[track].start[2];
1826 }
1827 else {
1828 buffer[2] = 0;
1829 buffer[1] = 2;
1830 buffer[0] = 0;
1831 }
1832
1833 return 0;
1834}
1835
1836// decode 'raw' subchannel data ripped by cdrdao
1837static void DecodeRawSubData(void) {
1838 unsigned char subQData[12];
1839 int i;
1840
1841 memset(subQData, 0, sizeof(subQData));
1842
1843 for (i = 0; i < 8 * 12; i++) {
1844 if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed
1845 subQData[i >> 3] |= (1 << (7 - (i & 7)));
1846 }
1847 }
1848
1849 memcpy(&subbuffer[12], subQData, 12);
1850}
1851
1852// read track
1853// time: byte 0 - minute; byte 1 - second; byte 2 - frame
1854// uses bcd format
1855static long CALLBACK ISOreadTrack(unsigned char *time) {
19c03d80 1856 int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2]));
c0ee7ac6 1857 long ret;
19c03d80 1858
ef79bbde
P		 1859 if (cdHandle == NULL) {
1860 return -1;
1861 }
1862
8aa91443 1863 if (pregapOffset) {
1864 subChanMissing = FALSE;
1865 if (sector >= pregapOffset) {
1866 sector -= 2 * 75;
1867 if (sector < pregapOffset)
1868 subChanMissing = TRUE;
1869 }
1870 }
1871
c0ee7ac6 1872 ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector);
1873 if (ret < 0)
1874 return -1;
ef79bbde 1875
9a92bffb 1876 if (subHandle != NULL) {
1877 fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET);
1878 fread(subbuffer, 1, SUB_FRAMESIZE, subHandle);
ef79bbde 1879
9a92bffb 1880 if (subChanRaw) DecodeRawSubData();
ef79bbde
P		 1881 }
1882
1883 return 0;
1884}
1885
ef79bbde
P		 1886// plays cdda audio
1887// sector: byte 0 - minute; byte 1 - second; byte 2 - frame
1888// does NOT uses bcd format
1889static long CALLBACK ISOplay(unsigned char *time) {
77160d47 1890 unsigned int i;
38b8102c 1891
7b8da7ab 1892 if (numtracks <= 1)
1893 return 0;
1894
38b8102c 1895 // find the track
77160d47 1896 cdda_cur_sector = msf2sec((char *)time);
2058d51f 1897 for (i = numtracks; i > 1; i--) {
77160d47 1898 cdda_first_sector = msf2sec(ti[i].start);
1899 if (cdda_first_sector <= cdda_cur_sector + 2 * 75)
38b8102c 1900 break;
2058d51f 1901 }
77160d47 1902 cdda_file_offset = ti[i].start_offset;
19c03d80 1903
38b8102c 1904 // find the file that contains this track
1905 for (; i > 1; i--)
1906 if (ti[i].handle != NULL)
1907 break;
1908
2058d51f 1909 cddaHandle = ti[i].handle;
8aa91443 1910
77160d47 1911 if (SPU_playCDDAchannel != NULL)
1912 startCDDA();
1913
ef79bbde
P		 1914 return 0;
1915}
1916
1917// stops cdda audio
1918static long CALLBACK ISOstop(void) {
1919 stopCDDA();
1920 return 0;
1921}
1922
1923// gets subchannel data
1924static unsigned char* CALLBACK ISOgetBufferSub(void) {
8aa91443 1925 if ((subHandle != NULL || subChanMixed) && !subChanMissing) {
ef79bbde
P		 1926 return subbuffer;
1927 }
1928
1929 return NULL;
1930}
1931
1932static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
deebc67f 1933 u32 sect;
1934
ef79bbde 1935 CDR__getStatus(stat);
deebc67f 1936
ef79bbde
P		 1937 if (playing) {
1938 stat->Type = 0x02;
1939 stat->Status |= 0x80;
ef79bbde
P		 1940 }
1941 else {
deebc67f 1942 // BIOS - boot ID (CD type)
1943 stat->Type = ti[1].type;
1944 }
1945
1946 // relative -> absolute time
1947 sect = cddaCurPos;
1948 sec2msf(sect, (char *)stat->Time);
1949
1950 return 0;
1951}
1952
1953// read CDDA sector into buffer
1954long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) {
1955 unsigned char msf[3] = {m, s, f};
1956 unsigned int file, track, track_start = 0;
1957 int ret;
1958
1959 cddaCurPos = msf2sec((char *)msf);
1960
1961 // find current track index
1962 for (track = numtracks; ; track--) {
1963 track_start = msf2sec(ti[track].start);
1964 if (track_start <= cddaCurPos)
1965 break;
1966 if (track == 1)
1967 break;
1968 }
1969
1970 // data tracks play silent
1971 if (ti[track].type != CDDA) {
1972 memset(buffer, 0, CD_FRAMESIZE_RAW);
1973 return 0;
1974 }
1975
1976 file = 1;
1977 if (multifile) {
1978 // find the file that contains this track
1979 for (file = track; file > 1; file--)
1980 if (ti[file].handle != NULL)
1981 break;
ef79bbde
P		 1982 }
1983
deebc67f 1984 ret = cdimg_read_func(ti[file].handle, ti[track].start_offset,
1985 buffer, cddaCurPos - track_start);
1986 if (ret != CD_FRAMESIZE_RAW) {
1987 memset(buffer, 0, CD_FRAMESIZE_RAW);
1988 return -1;
1989 }
1990
1991 if (cddaBigEndian) {
1992 int i;
1993 unsigned char tmp;
1994
1995 for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) {
1996 tmp = buffer[i * 2];
1997 buffer[i * 2] = buffer[i * 2 + 1];
1998 buffer[i * 2 + 1] = tmp;
1999 }
2000 }
858ad511 2001
ef79bbde
P		 2002 return 0;
2003}
2004
2005void cdrIsoInit(void) {
2006 CDR_init = ISOinit;
2007 CDR_shutdown = ISOshutdown;
2008 CDR_open = ISOopen;
2009 CDR_close = ISOclose;
2010 CDR_getTN = ISOgetTN;
2011 CDR_getTD = ISOgetTD;
2012 CDR_readTrack = ISOreadTrack;
2013 CDR_getBuffer = ISOgetBuffer;
2014 CDR_play = ISOplay;
2015 CDR_stop = ISOstop;
2016 CDR_getBufferSub = ISOgetBufferSub;
2017 CDR_getStatus = ISOgetStatus;
deebc67f 2018 CDR_readCDDA = ISOreadCDDA;
ef79bbde
P		 2019
2020 CDR_getDriveLetter = CDR__getDriveLetter;
2021 CDR_configure = CDR__configure;
2022 CDR_test = CDR__test;
2023 CDR_about = CDR__about;
2024 CDR_setfilename = CDR__setfilename;
2025
2026 numtracks = 0;
2027}
2028
2029int cdrIsoActive(void) {
2030 return (cdHandle != NULL);
2031}
ARM optimized PCSX fork