1 /***************************************************************************
2 * Copyright (C) 2007 PCSX-df Team *
3 * Copyright (C) 2009 Wei Mingzhi *
4 * Copyright (C) 2012 notaz *
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. *
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. *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the *
18 * Free Software Foundation, Inc., *
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
20 ***************************************************************************/
22 #include "psxcommon.h"
35 #define WIN32_LEAN_AND_MEAN
38 #define strcasecmp _stricmp
46 // to enable the USE_READ_THREAD code, fix:
47 // - https://github.com/notaz/pcsx_rearmed/issues/257
48 // - ISOgetBufferSub to not race with async code
49 //#define USE_READ_THREAD
52 #ifdef USE_LIBRETRO_VFS
53 #include <streams/file_stream_transforms.h>
60 #define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1))
62 unsigned int cdrIsoMultidiskCount;
63 unsigned int cdrIsoMultidiskSelect;
65 static FILE *cdHandle = NULL;
66 static FILE *cddaHandle = NULL;
67 static FILE *subHandle = NULL;
69 static boolean subChanMixed = FALSE;
70 static boolean subChanRaw = FALSE;
72 static boolean multifile = FALSE;
74 static unsigned char cdbuffer[CD_FRAMESIZE_RAW];
75 static unsigned char subbuffer[SUB_FRAMESIZE];
77 static boolean playing = FALSE;
78 static boolean cddaBigEndian = FALSE;
79 /* Frame offset into CD image where pregap data would be found if it was there.
80 * If a game seeks there we must *not* return subchannel data since it's
81 * not in the CD image, so that cdrom code can fake subchannel data instead.
82 * XXX: there could be multiple pregaps but PSX dumps only have one? */
83 static unsigned int pregapOffset;
85 static unsigned int cddaCurPos;
87 // compressed image stuff
89 unsigned char buff_raw[16][CD_FRAMESIZE_RAW];
90 unsigned char buff_compressed[CD_FRAMESIZE_RAW * 16 + 100];
92 unsigned int index_len;
93 unsigned int block_shift;
94 unsigned int current_block;
95 unsigned int sector_in_blk;
100 unsigned char (*buffer)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE];
102 const chd_header* header;
103 unsigned int sectors_per_hunk;
104 unsigned int current_hunk;
105 unsigned int sector_in_hunk;
109 static int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
110 static int (*cdimg_read_sub_func)(FILE *f, int sector);
112 char* CALLBACK CDR__getDriveLetter(void);
113 long CALLBACK CDR__configure(void);
114 long CALLBACK CDR__test(void);
115 void CALLBACK CDR__about(void);
116 long CALLBACK CDR__setfilename(char *filename);
117 long CALLBACK CDR__getStatus(struct CdrStat *stat);
119 static void DecodeRawSubData(void);
122 enum {DATA=1, CDDA} type;
123 char start[3]; // MSF-format
124 char length[3]; // MSF-format
125 FILE *handle; // for multi-track images CDDA
126 unsigned int start_offset; // byte offset from start of above file
129 #define MAXTRACKS 100 /* How many tracks can a CD hold? */
131 static int numtracks = 0;
132 static struct trackinfo ti[MAXTRACKS];
134 // get a sector from a msf-array
135 static unsigned int msf2sec(char *msf) {
136 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
139 static void sec2msf(unsigned int s, char *msf) {
140 msf[0] = s / 75 / 60;
141 s = s - msf[0] * 75 * 60;
147 // divide a string of xx:yy:zz into m, s, f
148 static void tok2msf(char *time, char *msf) {
151 token = strtok(time, ":");
153 msf[0] = atoi(token);
159 token = strtok(NULL, ":");
161 msf[1] = atoi(token);
167 token = strtok(NULL, ":");
169 msf[2] = atoi(token);
176 // this function tries to get the .toc file of the given .bin
177 // the necessary data is put into the ti (trackinformation)-array
178 static int parsetoc(const char *isofile) {
179 char tocname[MAXPATHLEN];
181 char linebuf[256], tmp[256], name[256];
183 char time[20], time2[20];
184 unsigned int t, sector_offs, sector_size;
185 unsigned int current_zero_gap = 0;
189 // copy name of the iso and change extension from .bin to .toc
190 strncpy(tocname, isofile, sizeof(tocname));
191 tocname[MAXPATHLEN - 1] = '\0';
192 if (strlen(tocname) >= 4) {
193 strcpy(tocname + strlen(tocname) - 4, ".toc");
199 if ((fi = fopen(tocname, "r")) == NULL) {
200 // try changing extension to .cue (to satisfy some stupid tutorials)
201 strcpy(tocname + strlen(tocname) - 4, ".cue");
202 if ((fi = fopen(tocname, "r")) == NULL) {
203 // if filename is image.toc.bin, try removing .bin (for Brasero)
204 strcpy(tocname, isofile);
206 if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) {
207 tocname[t - 4] = '\0';
208 if ((fi = fopen(tocname, "r")) == NULL) {
216 // check if it's really a TOC named as a .cue
217 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
218 token = strtok(linebuf, " ");
219 if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) {
224 fseek(fi, 0, SEEK_SET);
227 memset(&ti, 0, sizeof(ti));
228 cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio
230 sector_size = CD_FRAMESIZE_RAW;
231 sector_offs = 2 * 75;
233 // parse the .toc file
234 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
236 strncpy(tmp, linebuf, sizeof(linebuf));
237 token = strtok(tmp, " ");
239 if (token == NULL) continue;
241 if (!strcmp(token, "TRACK")) {
242 sector_offs += current_zero_gap;
243 current_zero_gap = 0;
246 token = strtok(NULL, " ");
249 if (!strncmp(token, "MODE2_RAW", 9)) {
250 ti[numtracks].type = DATA;
251 sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0
253 // check if this image contains mixed subchannel data
254 token = strtok(NULL, " ");
255 if (token != NULL && !strncmp(token, "RW", 2)) {
256 sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE;
258 if (!strncmp(token, "RW_RAW", 6))
262 else if (!strncmp(token, "AUDIO", 5)) {
263 ti[numtracks].type = CDDA;
266 else if (!strcmp(token, "DATAFILE")) {
267 if (ti[numtracks].type == CDDA) {
268 sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2);
269 ti[numtracks].start_offset = t;
270 t = t / sector_size + sector_offs;
271 sec2msf(t, (char *)&ti[numtracks].start);
272 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
275 sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time);
276 tok2msf((char *)&time, (char *)&ti[numtracks].length);
279 else if (!strcmp(token, "FILE")) {
280 sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2);
281 tok2msf((char *)&time, (char *)&ti[numtracks].start);
282 t += msf2sec(ti[numtracks].start) * sector_size;
283 ti[numtracks].start_offset = t;
284 t = t / sector_size + sector_offs;
285 sec2msf(t, (char *)&ti[numtracks].start);
286 tok2msf((char *)&time2, (char *)&ti[numtracks].length);
288 else if (!strcmp(token, "ZERO") || !strcmp(token, "SILENCE")) {
289 // skip unneeded optional fields
290 while (token != NULL) {
291 token = strtok(NULL, " ");
292 if (strchr(token, ':') != NULL)
297 current_zero_gap = msf2sec(tmp);
300 t = ti[numtracks - 1].start_offset;
302 pregapOffset = t + msf2sec(ti[numtracks - 1].length);
305 else if (!strcmp(token, "START")) {
306 token = strtok(NULL, " ");
307 if (token != NULL && strchr(token, ':')) {
310 ti[numtracks].start_offset += (t - current_zero_gap) * sector_size;
311 t = msf2sec(ti[numtracks].start) + t;
312 sec2msf(t, (char *)&ti[numtracks].start);
322 // this function tries to get the .cue file of the given .bin
323 // the necessary data is put into the ti (trackinformation)-array
324 static int parsecue(const char *isofile) {
325 char cuename[MAXPATHLEN];
326 char filepath[MAXPATHLEN];
332 char linebuf[256], tmpb[256], dummy[256];
333 unsigned int incue_max_len;
334 unsigned int t, file_len, mode, sector_offs;
335 unsigned int sector_size = 2352;
339 // copy name of the iso and change extension from .bin to .cue
340 strncpy(cuename, isofile, sizeof(cuename));
341 cuename[MAXPATHLEN - 1] = '\0';
342 if (strlen(cuename) >= 4) {
343 // If 'isofile' is a '.cd<X>' file, use it as a .cue file
344 // and don't try to search the additional .cue file
345 if (strncasecmp(cuename + strlen(cuename) - 4, ".cd", 3) != 0 )
346 strcpy(cuename + strlen(cuename) - 4, ".cue");
352 if ((fi = fopen(cuename, "r")) == NULL) {
356 // Some stupid tutorials wrongly tell users to use cdrdao to rip a
357 // "bin/cue" image, which is in fact a "bin/toc" image. So let's check
359 if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
360 if (!strncmp(linebuf, "CD_ROM_XA", 9)) {
361 // Don't proceed further, as this is actually a .toc file rather
364 return parsetoc(isofile);
366 fseek(fi, 0, SEEK_SET);
369 // build a path for files referenced in .cue
370 strncpy(filepath, cuename, sizeof(filepath));
371 tmp = strrchr(filepath, '/');
373 tmp = strrchr(filepath, '\\');
379 filepath[sizeof(filepath) - 1] = 0;
381 incue_max_len = sizeof(filepath) - (tmp - filepath) - 1;
383 memset(&ti, 0, sizeof(ti));
386 sector_offs = 2 * 75;
388 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
389 strncpy(dummy, linebuf, sizeof(linebuf));
390 token = strtok(dummy, " ");
396 if (!strcmp(token, "TRACK")) {
400 if (strstr(linebuf, "AUDIO") != NULL) {
401 ti[numtracks].type = CDDA;
404 else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, §or_size) == 3)
405 ti[numtracks].type = DATA;
407 SysPrintf(".cue: failed to parse TRACK\n");
408 ti[numtracks].type = numtracks == 1 ? DATA : CDDA;
410 if (sector_size == 0)
413 else if (!strcmp(token, "INDEX")) {
414 if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2)
415 SysPrintf(".cue: failed to parse INDEX\n");
416 tok2msf(time, (char *)&ti[numtracks].start);
418 t = msf2sec(ti[numtracks].start);
419 ti[numtracks].start_offset = t * sector_size;
421 sec2msf(t, ti[numtracks].start);
423 // default track length to file length
424 t = file_len - ti[numtracks].start_offset / sector_size;
425 sec2msf(t, ti[numtracks].length);
427 if (numtracks > 1 && ti[numtracks].handle == NULL) {
428 // this track uses the same file as the last,
429 // start of this track is last track's end
430 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
431 sec2msf(t, ti[numtracks - 1].length);
433 if (numtracks > 1 && pregapOffset == -1)
434 pregapOffset = ti[numtracks].start_offset / sector_size;
436 else if (!strcmp(token, "PREGAP")) {
437 if (sscanf(linebuf, " PREGAP %8s", time) == 1) {
438 tok2msf(time, dummy);
439 sector_offs += msf2sec(dummy);
441 pregapOffset = -1; // mark to fill track start_offset
443 else if (!strcmp(token, "FILE")) {
444 t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb);
446 sscanf(linebuf, " FILE %255s", tmpb);
448 tmp = strrchr(tmpb, '\\');
450 tmp = strrchr(tmpb, '/');
455 strncpy(incue_fname, tmp, incue_max_len);
456 ti[numtracks + 1].handle = fopen(filepath, "rb");
458 // update global offset if this is not first file in this .cue
459 if (numtracks + 1 > 1) {
461 sector_offs += file_len;
465 if (ti[numtracks + 1].handle == NULL) {
466 SysPrintf(_("\ncould not open: %s\n"), filepath);
469 fseek(ti[numtracks + 1].handle, 0, SEEK_END);
470 file_len = ftell(ti[numtracks + 1].handle) / 2352;
472 if (numtracks == 0 && strlen(isofile) >= 4 &&
473 (strcmp(isofile + strlen(isofile) - 4, ".cue") == 0 ||
474 strncasecmp(isofile + strlen(isofile) - 4, ".cd", 3) == 0)) {
475 // user selected .cue/.cdX as image file, use it's data track instead
477 cdHandle = fopen(filepath, "rb");
484 // if there are no tracks detected, then it's not a cue file
491 // this function tries to get the .ccd file of the given .img
492 // the necessary data is put into the ti (trackinformation)-array
493 static int parseccd(const char *isofile) {
494 char ccdname[MAXPATHLEN];
501 // copy name of the iso and change extension from .img to .ccd
502 strncpy(ccdname, isofile, sizeof(ccdname));
503 ccdname[MAXPATHLEN - 1] = '\0';
504 if (strlen(ccdname) >= 4) {
505 strcpy(ccdname + strlen(ccdname) - 4, ".ccd");
511 if ((fi = fopen(ccdname, "r")) == NULL) {
515 memset(&ti, 0, sizeof(ti));
517 while (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
518 if (!strncmp(linebuf, "[TRACK", 6)){
521 else if (!strncmp(linebuf, "MODE=", 5)) {
522 sscanf(linebuf, "MODE=%d", &t);
523 ti[numtracks].type = ((t == 0) ? CDDA : DATA);
525 else if (!strncmp(linebuf, "INDEX 1=", 8)) {
526 sscanf(linebuf, "INDEX 1=%d", &t);
527 sec2msf(t + 2 * 75, ti[numtracks].start);
528 ti[numtracks].start_offset = t * 2352;
530 // If we've already seen another track, this is its end
532 t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start);
533 sec2msf(t, ti[numtracks - 1].length);
540 // Fill out the last track's end based on size
541 if (numtracks >= 1) {
542 fseek(cdHandle, 0, SEEK_END);
543 t = ftell(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75;
544 sec2msf(t, ti[numtracks].length);
550 // this function tries to get the .mds file of the given .mdf
551 // the necessary data is put into the ti (trackinformation)-array
552 static int parsemds(const char *isofile) {
553 char mdsname[MAXPATHLEN];
555 unsigned int offset, extra_offset, l, i;
560 // copy name of the iso and change extension from .mdf to .mds
561 strncpy(mdsname, isofile, sizeof(mdsname));
562 mdsname[MAXPATHLEN - 1] = '\0';
563 if (strlen(mdsname) >= 4) {
564 strcpy(mdsname + strlen(mdsname) - 4, ".mds");
570 if ((fi = fopen(mdsname, "rb")) == NULL) {
574 memset(&ti, 0, sizeof(ti));
576 // check if it's a valid mds file
577 if (fread(&i, 1, sizeof(i), fi) != sizeof(i))
580 if (i != 0x4944454D) {
581 // not an valid mds file
586 // get offset to session block
587 fseek(fi, 0x50, SEEK_SET);
588 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
590 offset = SWAP32(offset);
592 // get total number of tracks
594 fseek(fi, offset, SEEK_SET);
595 if (fread(&s, 1, sizeof(s), fi) != sizeof(s))
600 // get offset to track blocks
601 fseek(fi, 4, SEEK_CUR);
602 if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
604 offset = SWAP32(offset);
608 fseek(fi, offset + 4, SEEK_SET);
609 if (fgetc(fi) < 0xA0) {
615 // check if the image contains mixed subchannel data
616 fseek(fi, offset + 1, SEEK_SET);
617 subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE);
620 for (i = 1; i <= numtracks; i++) {
621 fseek(fi, offset, SEEK_SET);
623 // get the track type
624 ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA);
625 fseek(fi, 8, SEEK_CUR);
627 // get the track starting point
628 ti[i].start[0] = fgetc(fi);
629 ti[i].start[1] = fgetc(fi);
630 ti[i].start[2] = fgetc(fi);
632 if (fread(&extra_offset, 1, sizeof(extra_offset), fi) != sizeof(extra_offset))
634 extra_offset = SWAP32(extra_offset);
636 // get track start offset (in .mdf)
637 fseek(fi, offset + 0x28, SEEK_SET);
638 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
641 ti[i].start_offset = l;
644 fseek(fi, extra_offset, SEEK_SET);
645 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
649 pregapOffset = msf2sec(ti[i].start);
651 // get the track length
652 if (fread(&l, 1, sizeof(l), fi) != sizeof(l))
655 sec2msf(l, ti[i].length);
663 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
669 static int handlepbp(const char *isofile) {
672 unsigned int dontcare[8];
673 unsigned int psar_offs;
686 unsigned int dontcare[6];
689 off_t psisoimg_offs, cdimg_base;
690 unsigned int t, cd_length;
691 unsigned int offsettab[8];
692 unsigned int psar_offs, index_entry_size, index_entry_offset;
693 const char *ext = NULL;
696 if (strlen(isofile) >= 4)
697 ext = isofile + strlen(isofile) - 4;
698 if (ext == NULL || (strcmp(ext, ".pbp") != 0 && strcmp(ext, ".PBP") != 0))
701 fseeko(cdHandle, 0, SEEK_SET);
705 ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle);
706 if (ret != sizeof(pbp_hdr)) {
707 SysPrintf("failed to read pbp\n");
711 psar_offs = SWAP32(pbp_hdr.psar_offs);
713 ret = fseeko(cdHandle, psar_offs, SEEK_SET);
715 SysPrintf("failed to seek to %x\n", psar_offs);
719 psisoimg_offs = psar_offs;
720 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
723 if (strcmp(psar_sig, "PSTITLEIMG") == 0) {
725 ret = fseeko(cdHandle, psar_offs + 0x200, SEEK_SET);
727 SysPrintf("failed to seek to %x\n", psar_offs + 0x200);
731 if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) {
732 SysPrintf("failed to read offsettab\n");
736 for (i = 0; i < sizeof(offsettab) / sizeof(offsettab[0]); i++) {
737 if (offsettab[i] == 0)
740 cdrIsoMultidiskCount = i;
741 if (cdrIsoMultidiskCount == 0) {
742 SysPrintf("multidisk eboot has 0 images?\n");
746 if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount)
747 cdrIsoMultidiskSelect = 0;
749 psisoimg_offs += SWAP32(offsettab[cdrIsoMultidiskSelect]);
751 ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET);
753 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs);
757 if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
762 if (strcmp(psar_sig, "PSISOIMG00") != 0) {
763 SysPrintf("bad psar_sig: %s\n", psar_sig);
768 ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET);
770 SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800);
774 // first 3 entries are special
775 fseek(cdHandle, sizeof(toc_entry), SEEK_CUR);
776 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
778 numtracks = btoi(toc_entry.index1[0]);
780 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
782 cd_length = btoi(toc_entry.index1[0]) * 60 * 75 +
783 btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]);
785 for (i = 1; i <= numtracks; i++) {
786 if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
789 ti[i].type = (toc_entry.type == 1) ? CDDA : DATA;
791 ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 +
792 btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]);
793 ti[i].start_offset *= 2352;
794 ti[i].start[0] = btoi(toc_entry.index1[0]);
795 ti[i].start[1] = btoi(toc_entry.index1[1]);
796 ti[i].start[2] = btoi(toc_entry.index1[2]);
799 t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start);
800 sec2msf(t, ti[i - 1].length);
803 t = cd_length - ti[numtracks].start_offset / 2352;
804 sec2msf(t, ti[numtracks].length);
807 ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET);
809 SysPrintf("failed to seek to ISO index\n");
813 compr_img = calloc(1, sizeof(*compr_img));
814 if (compr_img == NULL)
817 compr_img->block_shift = 4;
818 compr_img->current_block = (unsigned int)-1;
820 compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry);
821 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
822 if (compr_img->index_table == NULL)
825 cdimg_base = psisoimg_offs + 0x100000;
826 for (i = 0; i < compr_img->index_len; i++) {
827 ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle);
828 if (ret != sizeof(index_entry)) {
829 SysPrintf("failed to read index_entry #%d\n", i);
833 index_entry_size = SWAP32(index_entry.size);
834 index_entry_offset = SWAP32(index_entry.offset);
836 if (index_entry_size == 0)
839 compr_img->index_table[i] = cdimg_base + index_entry_offset;
841 compr_img->index_table[i] = cdimg_base + index_entry_offset + index_entry_size;
846 free(compr_img->index_table);
847 compr_img->index_table = NULL;
852 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
856 if (compr_img != NULL) {
863 static int handlecbin(const char *isofile) {
867 unsigned int header_size;
868 unsigned long long total_bytes;
869 unsigned int block_size;
870 unsigned char ver; // 1
872 unsigned char rsv_06[2];
874 const char *ext = NULL;
875 unsigned int *index_table = NULL;
876 unsigned int index = 0, plain;
879 if (strlen(isofile) >= 5)
880 ext = isofile + strlen(isofile) - 5;
881 if (ext == NULL || (strcasecmp(ext + 1, ".cbn") != 0 && strcasecmp(ext, ".cbin") != 0))
884 fseek(cdHandle, 0, SEEK_SET);
886 ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle);
887 if (ret != sizeof(ciso_hdr)) {
888 SysPrintf("failed to read ciso header\n");
892 if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) {
893 SysPrintf("bad ciso header\n");
896 if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) {
897 ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET);
899 SysPrintf("failed to seek to %x\n", ciso_hdr.header_size);
904 compr_img = calloc(1, sizeof(*compr_img));
905 if (compr_img == NULL)
908 compr_img->block_shift = 0;
909 compr_img->current_block = (unsigned int)-1;
911 compr_img->index_len = ciso_hdr.total_bytes / ciso_hdr.block_size;
912 index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0]));
913 if (index_table == NULL)
916 ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle);
917 if (ret != compr_img->index_len) {
918 SysPrintf("failed to read index table\n");
922 compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
923 if (compr_img->index_table == NULL)
926 for (i = 0; i < compr_img->index_len + 1; i++) {
927 index = index_table[i];
928 plain = index & 0x80000000;
930 compr_img->index_table[i] = (off_t)index << ciso_hdr.align;
932 compr_img->index_table[i] |= OFF_T_MSB;
940 if (compr_img != NULL) {
948 static int handlechd(const char *isofile) {
949 int frame_offset = 150;
952 chd_img = calloc(1, sizeof(*chd_img));
956 if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE)
959 if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE))
962 chd_img->header = chd_get_header(chd_img->chd);
964 chd_img->buffer = malloc(chd_img->header->hunkbytes);
965 if (chd_img->buffer == NULL)
968 chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE);
969 chd_img->current_hunk = (unsigned int)-1;
971 cddaBigEndian = TRUE;
974 memset(ti, 0, sizeof(ti));
989 uint32_t meta_size = 0;
991 if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
992 sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap);
993 else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE)
994 sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames);
998 SysPrintf("chd: %s\n", meta);
1000 if (md.track == 1) {
1001 if (!strncmp(md.subtype, "RW", 2)) {
1002 subChanMixed = TRUE;
1003 if (!strcmp(md.subtype, "RW_RAW"))
1008 ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA;
1010 sec2msf(frame_offset + md.pregap, ti[md.track].start);
1011 sec2msf(md.frames, ti[md.track].length);
1013 ti[md.track].start_offset = file_offset + md.pregap;
1015 // XXX: what about postgap?
1016 frame_offset += md.frames;
1017 file_offset += md.frames;
1025 if (chd_img != NULL) {
1026 free(chd_img->buffer);
1034 // this function tries to get the .sub file of the given .img
1035 static int opensubfile(const char *isoname) {
1036 char subname[MAXPATHLEN];
1038 // copy name of the iso and change extension from .img to .sub
1039 strncpy(subname, isoname, sizeof(subname));
1040 subname[MAXPATHLEN - 1] = '\0';
1041 if (strlen(subname) >= 4) {
1042 strcpy(subname + strlen(subname) - 4, ".sub");
1048 subHandle = fopen(subname, "rb");
1049 if (subHandle == NULL) {
1056 static int opensbifile(const char *isoname) {
1057 char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0";
1060 strncpy(sbiname, isoname, sizeof(sbiname));
1061 sbiname[MAXPATHLEN - 1] = '\0';
1062 if (strlen(sbiname) >= 4) {
1063 if (cdrIsoMultidiskCount > 1) {
1064 sprintf(disknum, "_%i.sbi", cdrIsoMultidiskSelect + 1);
1065 strcpy(sbiname + strlen(sbiname) - 4, disknum);
1068 strcpy(sbiname + strlen(sbiname) - 4, ".sbi");
1074 fseek(cdHandle, 0, SEEK_END);
1075 s = ftell(cdHandle) / 2352;
1077 return LoadSBI(sbiname, s);
1080 #ifndef USE_READ_THREAD
1081 static void readThreadStop() {}
1082 static void readThreadStart() {}
1084 static pthread_t read_thread_id;
1086 static pthread_cond_t read_thread_msg_avail;
1087 static pthread_cond_t read_thread_msg_done;
1088 static pthread_mutex_t read_thread_msg_lock;
1090 static pthread_cond_t sectorbuffer_cond;
1091 static pthread_mutex_t sectorbuffer_lock;
1093 static boolean read_thread_running = FALSE;
1094 static int read_thread_sector_start = -1;
1095 static int read_thread_sector_end = -1;
1100 unsigned char data[CD_FRAMESIZE_RAW];
1101 } SectorBufferEntry;
1103 #define SECTOR_BUFFER_SIZE 4096
1105 static SectorBufferEntry *sectorbuffer;
1106 static size_t sectorbuffer_index;
1108 int (*sync_cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
1109 unsigned char *(*sync_CDR_getBuffer)(void);
1111 static unsigned char * CALLBACK ISOgetBuffer_async(void);
1112 static int cdread_async(FILE *f, unsigned int base, void *dest, int sector);
1114 static void *readThreadMain(void *param) {
1115 int max_sector = -1;
1116 int requested_sector_start = -1;
1117 int requested_sector_end = -1;
1118 int last_read_sector = -1;
1124 int speedmult_ra = 4;
1127 int how_far_ahead = 0;
1129 unsigned char tmpdata[CD_FRAMESIZE_RAW];
1132 max_sector = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
1135 pthread_mutex_lock(&read_thread_msg_lock);
1137 // If we don't have readahead and we don't have a sector request, wait for one.
1138 // If we still have readahead to go, don't block, just keep going.
1139 // And if we ever have a sector request pending, acknowledge and reset it.
1142 if (read_thread_sector_start == -1 && read_thread_running) {
1143 pthread_cond_wait(&read_thread_msg_avail, &read_thread_msg_lock);
1147 if (read_thread_sector_start != -1) {
1148 requested_sector_start = read_thread_sector_start;
1149 requested_sector_end = read_thread_sector_end;
1150 read_thread_sector_start = -1;
1151 read_thread_sector_end = -1;
1152 pthread_cond_signal(&read_thread_msg_done);
1155 pthread_mutex_unlock(&read_thread_msg_lock);
1157 if (!read_thread_running)
1160 // Readahead code, based on the implementation in mednafen psx's cdromif.cpp
1161 if (requested_sector_start != -1) {
1162 if (last_read_sector != -1 && last_read_sector == (requested_sector_start - 1)) {
1163 how_far_ahead = ra_sector - requested_sector_end;
1165 if(how_far_ahead <= max_ra)
1166 ra_count = (max_ra - how_far_ahead + 1 ? max_ra - how_far_ahead + 1 : speedmult_ra);
1169 } else if (requested_sector_end != last_read_sector) {
1170 ra_sector = requested_sector_end;
1171 ra_count = initial_ra;
1174 last_read_sector = requested_sector_end;
1177 index = ra_sector % SECTOR_BUFFER_SIZE;
1179 // check for end of CD
1180 if (ra_count && ra_sector >= max_sector) {
1182 pthread_mutex_lock(§orbuffer_lock);
1183 sectorbuffer[index].ret = -1;
1184 sectorbuffer[index].sector = ra_sector;
1185 pthread_cond_signal(§orbuffer_cond);
1186 pthread_mutex_unlock(§orbuffer_lock);
1190 pthread_mutex_lock(§orbuffer_lock);
1191 if (sectorbuffer[index].sector != ra_sector) {
1192 pthread_mutex_unlock(§orbuffer_lock);
1194 ret = sync_cdimg_read_func(cdHandle, 0, tmpdata, ra_sector);
1196 pthread_mutex_lock(§orbuffer_lock);
1197 sectorbuffer[index].ret = ret;
1198 sectorbuffer[index].sector = ra_sector;
1199 memcpy(sectorbuffer[index].data, tmpdata, CD_FRAMESIZE_RAW);
1201 pthread_cond_signal(§orbuffer_cond);
1202 pthread_mutex_unlock(§orbuffer_lock);
1212 static void readThreadStop() {
1213 if (read_thread_running == TRUE) {
1214 read_thread_running = FALSE;
1215 pthread_cond_signal(&read_thread_msg_avail);
1216 pthread_join(read_thread_id, NULL);
1219 pthread_cond_destroy(&read_thread_msg_done);
1220 pthread_cond_destroy(&read_thread_msg_avail);
1221 pthread_mutex_destroy(&read_thread_msg_lock);
1223 pthread_cond_destroy(§orbuffer_cond);
1224 pthread_mutex_destroy(§orbuffer_lock);
1226 CDR_getBuffer = sync_CDR_getBuffer;
1227 cdimg_read_func = sync_cdimg_read_func;
1230 sectorbuffer = NULL;
1233 static void readThreadStart() {
1234 SysPrintf("Starting async CD thread\n");
1236 if (read_thread_running == TRUE)
1239 read_thread_running = TRUE;
1240 read_thread_sector_start = -1;
1241 read_thread_sector_end = -1;
1242 sectorbuffer_index = 0;
1244 sectorbuffer = calloc(SECTOR_BUFFER_SIZE, sizeof(SectorBufferEntry));
1248 sectorbuffer[0].sector = -1; // Otherwise we might think we've already fetched sector 0!
1250 sync_CDR_getBuffer = CDR_getBuffer;
1251 CDR_getBuffer = ISOgetBuffer_async;
1252 sync_cdimg_read_func = cdimg_read_func;
1253 cdimg_read_func = cdread_async;
1255 if (pthread_cond_init(&read_thread_msg_avail, NULL) ||
1256 pthread_cond_init(&read_thread_msg_done, NULL) ||
1257 pthread_mutex_init(&read_thread_msg_lock, NULL) ||
1258 pthread_cond_init(§orbuffer_cond, NULL) ||
1259 pthread_mutex_init(§orbuffer_lock, NULL) ||
1260 pthread_create(&read_thread_id, NULL, readThreadMain, NULL))
1266 SysPrintf("Error starting async CD thread\n");
1267 SysPrintf("Falling back to sync\n");
1273 static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector)
1276 if (fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET))
1278 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1284 // often happens in cdda gaps of a split cue/bin, so not logged
1285 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1289 static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)
1293 if (fseek(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET))
1295 ret = fread(dest, 1, CD_FRAMESIZE_RAW, f);
1301 //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector);
1305 static int cdread_sub_sub_mixed(FILE *f, int sector)
1307 if (fseek(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + CD_FRAMESIZE_RAW, SEEK_SET))
1309 if (fread(subbuffer, 1, SUB_FRAMESIZE, f) != SUB_FRAMESIZE)
1312 return SUB_FRAMESIZE;
1315 SysPrintf("subchannel: file IO error %d, sector %u\n", errno, sector);
1319 static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size)
1324 if (z.zalloc == NULL) {
1325 // XXX: one-time leak here..
1331 ret = inflateInit2(&z, -15);
1334 ret = inflateReset(&z);
1339 z.avail_in = in_size;
1341 z.avail_out = *out_size;
1343 ret = inflate(&z, Z_NO_FLUSH);
1346 *out_size -= z.avail_out;
1347 return ret == 1 ? 0 : ret;
1350 static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)
1352 unsigned long cdbuffer_size, cdbuffer_size_expect;
1359 sector += base / 2352;
1361 block = sector >> compr_img->block_shift;
1362 compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1);
1364 if (block == compr_img->current_block) {
1365 //printf("hit sect %d\n", sector);
1369 if (sector >= compr_img->index_len * 16) {
1370 SysPrintf("sector %d is past img end\n", sector);
1374 start_byte = compr_img->index_table[block] & ~OFF_T_MSB;
1375 if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) {
1376 SysPrintf("seek error for block %d at %llx: ",
1377 block, (long long)start_byte);
1382 is_compressed = !(compr_img->index_table[block] & OFF_T_MSB);
1383 size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte;
1384 if (size > sizeof(compr_img->buff_compressed)) {
1385 SysPrintf("block %d is too large: %u\n", block, size);
1389 if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0],
1390 1, size, cdHandle) != size) {
1391 SysPrintf("read error for block %d at %x: ", block, start_byte);
1396 if (is_compressed) {
1397 cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift;
1398 cdbuffer_size = cdbuffer_size_expect;
1399 ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size);
1401 SysPrintf("uncompress failed with %d for block %d, sector %d\n",
1402 ret, block, sector);
1405 if (cdbuffer_size != cdbuffer_size_expect)
1406 SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size,
1407 cdbuffer_size_expect, sector);
1411 compr_img->current_block = block;
1414 if (dest != cdbuffer) // copy avoid HACK
1415 memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk],
1417 return CD_FRAMESIZE_RAW;
1421 static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector)
1427 hunk = sector / chd_img->sectors_per_hunk;
1428 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1430 if (hunk != chd_img->current_hunk)
1432 chd_read(chd_img->chd, hunk, chd_img->buffer);
1433 chd_img->current_hunk = hunk;
1436 if (dest != cdbuffer) // copy avoid HACK
1437 memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk],
1439 return CD_FRAMESIZE_RAW;
1442 static int cdread_sub_chd(FILE *f, int sector)
1449 hunk = sector / chd_img->sectors_per_hunk;
1450 chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk;
1452 if (hunk != chd_img->current_hunk)
1454 chd_read(chd_img->chd, hunk, chd_img->buffer);
1455 chd_img->current_hunk = hunk;
1458 memcpy(subbuffer, chd_img->buffer[chd_img->sector_in_hunk] + CD_FRAMESIZE_RAW, SUB_FRAMESIZE);
1459 return SUB_FRAMESIZE;
1463 static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector)
1467 fseek(f, base + sector * 2048, SEEK_SET);
1468 ret = fread((char *)dest + 12 * 2, 1, 2048, f);
1470 // not really necessary, fake mode 2 header
1471 memset(cdbuffer, 0, 12 * 2);
1472 sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]);
1473 cdbuffer[12 + 3] = 1;
1478 #ifdef USE_READ_THREAD
1480 static int cdread_async(FILE *f, unsigned int base, void *dest, int sector) {
1481 boolean found = FALSE;
1482 int i = sector % SECTOR_BUFFER_SIZE;
1485 if (f != cdHandle || base != 0 || dest != cdbuffer) {
1486 // Async reads are only supported for cdbuffer, so call the sync
1487 // function directly.
1488 return sync_cdimg_read_func(f, base, dest, sector);
1491 pthread_mutex_lock(&read_thread_msg_lock);
1493 // Only wait if we're not trying to read the next sector and
1494 // sector_start is set (meaning the last request hasn't been
1496 while(read_thread_sector_start != -1 && read_thread_sector_end + 1 != sector) {
1497 pthread_cond_wait(&read_thread_msg_done, &read_thread_msg_lock);
1500 if (read_thread_sector_start == -1)
1501 read_thread_sector_start = sector;
1503 read_thread_sector_end = sector;
1504 pthread_cond_signal(&read_thread_msg_avail);
1505 pthread_mutex_unlock(&read_thread_msg_lock);
1508 pthread_mutex_lock(§orbuffer_lock);
1509 if (sectorbuffer[i].sector == sector) {
1510 sectorbuffer_index = i;
1511 ret = sectorbuffer[i].ret;
1516 pthread_cond_wait(§orbuffer_cond, §orbuffer_lock);
1518 pthread_mutex_unlock(§orbuffer_lock);
1526 static unsigned char * CALLBACK ISOgetBuffer_compr(void) {
1527 return compr_img->buff_raw[compr_img->sector_in_blk] + 12;
1531 static unsigned char * CALLBACK ISOgetBuffer_chd(void) {
1532 return chd_img->buffer[chd_img->sector_in_hunk] + 12;
1536 #ifdef USE_READ_THREAD
1537 static unsigned char * CALLBACK ISOgetBuffer_async(void) {
1538 unsigned char *buffer;
1539 pthread_mutex_lock(§orbuffer_lock);
1540 buffer = sectorbuffer[sectorbuffer_index].data;
1541 pthread_mutex_unlock(§orbuffer_lock);
1547 static unsigned char * CALLBACK ISOgetBuffer(void) {
1548 return cdbuffer + 12;
1551 static void PrintTracks(void) {
1554 for (i = 1; i <= numtracks; i++) {
1555 SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"),
1556 i, (ti[i].type == DATA ? "DATA" : "AUDIO"),
1557 ti[i].start[0], ti[i].start[1], ti[i].start[2],
1558 ti[i].length[0], ti[i].length[1], ti[i].length[2]);
1562 // This function is invoked by the front-end when opening an ISO
1563 // file for playback
1564 static long CALLBACK ISOopen(void) {
1565 boolean isMode1ISO = FALSE;
1566 char alt_bin_filename[MAXPATHLEN];
1567 const char *bin_filename;
1568 char image_str[1024];
1571 if (cdHandle != NULL) {
1572 return 0; // it's already open
1575 cdHandle = fopen(GetIsoFile(), "rb");
1576 if (cdHandle == NULL) {
1577 SysPrintf(_("Could't open '%s' for reading: %s\n"),
1578 GetIsoFile(), strerror(errno));
1582 snprintf(image_str, sizeof(image_str) - 6*4 - 1,
1583 "Loaded CD Image: %s", GetIsoFile());
1585 cddaBigEndian = FALSE;
1586 subChanMixed = FALSE;
1589 cdrIsoMultidiskCount = 1;
1592 CDR_getBuffer = ISOgetBuffer;
1593 cdimg_read_func = cdread_normal;
1594 cdimg_read_sub_func = NULL;
1596 if (parsetoc(GetIsoFile()) == 0) {
1597 strcat(image_str, "[+toc]");
1599 else if (parseccd(GetIsoFile()) == 0) {
1600 strcat(image_str, "[+ccd]");
1602 else if (parsemds(GetIsoFile()) == 0) {
1603 strcat(image_str, "[+mds]");
1605 else if (parsecue(GetIsoFile()) == 0) {
1606 strcat(image_str, "[+cue]");
1608 if (handlepbp(GetIsoFile()) == 0) {
1609 strcat(image_str, "[+pbp]");
1610 CDR_getBuffer = ISOgetBuffer_compr;
1611 cdimg_read_func = cdread_compressed;
1613 else if (handlecbin(GetIsoFile()) == 0) {
1614 strcat(image_str, "[+cbin]");
1615 CDR_getBuffer = ISOgetBuffer_compr;
1616 cdimg_read_func = cdread_compressed;
1619 else if (handlechd(GetIsoFile()) == 0) {
1620 strcat(image_str, "[+chd]");
1621 CDR_getBuffer = ISOgetBuffer_chd;
1622 cdimg_read_func = cdread_chd;
1623 cdimg_read_sub_func = cdread_sub_chd;
1628 if (!subChanMixed && opensubfile(GetIsoFile()) == 0) {
1629 strcat(image_str, "[+sub]");
1631 if (opensbifile(GetIsoFile()) == 0) {
1632 strcat(image_str, "[+sbi]");
1635 fseeko(cdHandle, 0, SEEK_END);
1637 // maybe user selected metadata file instead of main .bin ..
1638 bin_filename = GetIsoFile();
1639 if (ftello(cdHandle) < 2352 * 0x10) {
1640 static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
1645 strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename));
1646 alt_bin_filename[MAXPATHLEN - 1] = '\0';
1647 if (strlen(alt_bin_filename) >= 4) {
1648 p = alt_bin_filename + strlen(alt_bin_filename) - 4;
1649 for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
1651 tmpf = fopen(alt_bin_filename, "rb");
1657 bin_filename = alt_bin_filename;
1660 fseeko(cdHandle, 0, SEEK_END);
1664 // guess whether it is mode1/2048
1665 if (ftello(cdHandle) % 2048 == 0) {
1666 unsigned int modeTest = 0;
1667 fseek(cdHandle, 0, SEEK_SET);
1668 if (!fread(&modeTest, sizeof(modeTest), 1, cdHandle)) {
1670 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
1674 if (SWAP32(modeTest) != 0xffffff00) {
1675 strcat(image_str, "[2048]");
1679 fseek(cdHandle, 0, SEEK_SET);
1681 SysPrintf("%s.\n", image_str);
1685 if (subChanMixed && !is_chd) {
1686 cdimg_read_func = cdread_sub_mixed;
1687 cdimg_read_sub_func = cdread_sub_sub_mixed;
1689 else if (isMode1ISO) {
1690 cdimg_read_func = cdread_2048;
1691 cdimg_read_sub_func = NULL;
1694 // make sure we have another handle open for cdda
1695 if (numtracks > 1 && ti[1].handle == NULL) {
1696 ti[1].handle = fopen(bin_filename, "rb");
1699 if (Config.AsyncCD) {
1705 static long CALLBACK ISOclose(void) {
1708 if (cdHandle != NULL) {
1712 if (subHandle != NULL) {
1719 if (compr_img != NULL) {
1720 free(compr_img->index_table);
1726 if (chd_img != NULL) {
1727 chd_close(chd_img->chd);
1728 free(chd_img->buffer);
1734 for (i = 1; i <= numtracks; i++) {
1735 if (ti[i].handle != NULL) {
1736 fclose(ti[i].handle);
1737 ti[i].handle = NULL;
1744 memset(cdbuffer, 0, sizeof(cdbuffer));
1745 CDR_getBuffer = ISOgetBuffer;
1747 if (Config.AsyncCD) {
1754 static long CALLBACK ISOinit(void) {
1755 assert(cdHandle == NULL);
1756 assert(subHandle == NULL);
1758 return 0; // do nothing
1761 static long CALLBACK ISOshutdown(void) {
1766 // return Starting and Ending Track
1768 // byte 0 - start track
1769 // byte 1 - end track
1770 static long CALLBACK ISOgetTN(unsigned char *buffer) {
1773 if (numtracks > 0) {
1774 buffer[1] = numtracks;
1783 // return Track Time
1788 static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) {
1791 unsigned char time[3];
1792 sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
1793 sec2msf(sect, (char *)time);
1794 buffer[2] = time[0];
1795 buffer[1] = time[1];
1796 buffer[0] = time[2];
1798 else if (numtracks > 0 && track <= numtracks) {
1799 buffer[2] = ti[track].start[0];
1800 buffer[1] = ti[track].start[1];
1801 buffer[0] = ti[track].start[2];
1812 // decode 'raw' subchannel data ripped by cdrdao
1813 static void DecodeRawSubData(void) {
1814 unsigned char subQData[12];
1817 memset(subQData, 0, sizeof(subQData));
1819 for (i = 0; i < 8 * 12; i++) {
1820 if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed
1821 subQData[i >> 3] |= (1 << (7 - (i & 7)));
1825 memcpy(&subbuffer[12], subQData, 12);
1829 // time: byte 0 - minute; byte 1 - second; byte 2 - frame
1831 static boolean CALLBACK ISOreadTrack(unsigned char *time) {
1832 int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2]));
1835 if (cdHandle == NULL) {
1839 if (pregapOffset && sector >= pregapOffset)
1842 ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector);
1843 if (ret < 12*2 + 2048)
1850 // sector: byte 0 - minute; byte 1 - second; byte 2 - frame
1851 // does NOT uses bcd format
1852 static long CALLBACK ISOplay(unsigned char *time) {
1858 static long CALLBACK ISOstop(void) {
1863 // gets subchannel data
1864 static unsigned char* CALLBACK ISOgetBufferSub(int sector) {
1865 if (pregapOffset && sector >= pregapOffset) {
1867 if (sector < pregapOffset) // ?
1871 if (cdimg_read_sub_func != NULL) {
1872 if (cdimg_read_sub_func(cdHandle, sector) != SUB_FRAMESIZE)
1875 else if (subHandle != NULL) {
1876 if (fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET))
1878 if (fread(subbuffer, 1, SUB_FRAMESIZE, subHandle) != SUB_FRAMESIZE)
1885 if (subChanRaw) DecodeRawSubData();
1889 static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
1892 CDR__getStatus(stat);
1896 stat->Status |= 0x80;
1899 // BIOS - boot ID (CD type)
1900 stat->Type = ti[1].type;
1903 // relative -> absolute time
1905 sec2msf(sect, (char *)stat->Time);
1910 // read CDDA sector into buffer
1911 long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) {
1912 unsigned char msf[3] = {m, s, f};
1913 unsigned int file, track, track_start = 0;
1916 cddaCurPos = msf2sec((char *)msf);
1918 // find current track index
1919 for (track = numtracks; ; track--) {
1920 track_start = msf2sec(ti[track].start);
1921 if (track_start <= cddaCurPos)
1927 // data tracks play silent
1928 if (ti[track].type != CDDA) {
1929 memset(buffer, 0, CD_FRAMESIZE_RAW);
1935 // find the file that contains this track
1936 for (file = track; file > 1; file--)
1937 if (ti[file].handle != NULL)
1941 ret = cdimg_read_func(ti[file].handle, ti[track].start_offset,
1942 buffer, cddaCurPos - track_start);
1943 if (ret != CD_FRAMESIZE_RAW) {
1944 memset(buffer, 0, CD_FRAMESIZE_RAW);
1948 if (cddaBigEndian) {
1952 for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) {
1953 tmp = buffer[i * 2];
1954 buffer[i * 2] = buffer[i * 2 + 1];
1955 buffer[i * 2 + 1] = tmp;
1962 void cdrIsoInit(void) {
1964 CDR_shutdown = ISOshutdown;
1966 CDR_close = ISOclose;
1967 CDR_getTN = ISOgetTN;
1968 CDR_getTD = ISOgetTD;
1969 CDR_readTrack = ISOreadTrack;
1970 CDR_getBuffer = ISOgetBuffer;
1973 CDR_getBufferSub = ISOgetBufferSub;
1974 CDR_getStatus = ISOgetStatus;
1975 CDR_readCDDA = ISOreadCDDA;
1977 CDR_getDriveLetter = CDR__getDriveLetter;
1978 CDR_configure = CDR__configure;
1979 CDR_test = CDR__test;
1980 CDR_about = CDR__about;
1981 CDR_setfilename = CDR__setfilename;
1986 int cdrIsoActive(void) {
1987 return (cdHandle != NULL);