X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=libpcsxcore%2Fcdriso.c;h=081a8f2b96483e0d8d50e3d18034a00770abb222;hb=9a0a61d27586bfb93aa443cc59d9588d2b9cf992;hp=e6247bbbea2d0773297becbfbc0c7e4165c2edc4;hpb=ecd502e11f1d17998924f2de5909380b75c67d49;p=pcsx_rearmed.git diff --git a/libpcsxcore/cdriso.c b/libpcsxcore/cdriso.c index e6247bbb..081a8f2b 100644 --- a/libpcsxcore/cdriso.c +++ b/libpcsxcore/cdriso.c @@ -30,8 +30,7 @@ #include #include #define strcasecmp _stricmp -#define usleep(x) Sleep((x) / 1000) -#else +#elif P_HAVE_PTHREAD #include #include #include @@ -40,7 +39,7 @@ #include #ifdef HAVE_CHD -#include "chd.h" +#include "libchdr/chd.h" #endif #define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1)) @@ -54,7 +53,6 @@ static FILE *subHandle = NULL; static boolean subChanMixed = FALSE; static boolean subChanRaw = FALSE; -static boolean subChanMissing = FALSE; static boolean multifile = FALSE; @@ -83,19 +81,19 @@ static struct { } *compr_img; #ifdef HAVE_CHD -typedef struct { - unsigned char (*buffer)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE]; +static struct { + unsigned char *buffer; chd_file* chd; const chd_header* header; unsigned int sectors_per_hunk; - unsigned int current_hunk; + unsigned int current_hunk[2]; + unsigned int current_buffer; unsigned int sector_in_hunk; -} CHD_IMG; - -static CHD_IMG *chd_img; +} *chd_img; #endif -int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector); +static int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector); +static int (*cdimg_read_sub_func)(FILE *f, int sector); char* CALLBACK CDR__getDriveLetter(void); long CALLBACK CDR__configure(void); @@ -111,7 +109,7 @@ struct trackinfo { char start[3]; // MSF-format char length[3]; // MSF-format FILE *handle; // for multi-track images CDDA - unsigned int start_offset; // byte offset from start of above file + unsigned int start_offset; // byte offset from start of above file (chd: sector offset) }; #define MAXTRACKS 100 /* How many tracks can a CD hold? */ @@ -161,11 +159,6 @@ static void tok2msf(char *time, char *msf) { } } -// stop the CDDA playback -static void stopCDDA() { - playing = FALSE; -} - // this function tries to get the .toc file of the given .bin // the necessary data is put into the ti (trackinformation)-array static int parsetoc(const char *isofile) { @@ -207,12 +200,13 @@ static int parsetoc(const char *isofile) { } } // check if it's really a TOC named as a .cue - fgets(linebuf, sizeof(linebuf), fi); + if (fgets(linebuf, sizeof(linebuf), fi) != NULL) { token = strtok(linebuf, " "); if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) { fclose(fi); return -1; } + } fseek(fi, 0, SEEK_SET); } @@ -332,6 +326,9 @@ static int parsecue(const char *isofile) { strncpy(cuename, isofile, sizeof(cuename)); cuename[MAXPATHLEN - 1] = '\0'; if (strlen(cuename) >= 4) { + // If 'isofile' is a '.cd' file, use it as a .cue file + // and don't try to search the additional .cue file + if (strncasecmp(cuename + strlen(cuename) - 4, ".cd", 3) != 0 ) strcpy(cuename + strlen(cuename) - 4, ".cue"); } else { @@ -464,9 +461,9 @@ static int parsecue(const char *isofile) { file_len = ftell(ti[numtracks + 1].handle) / 2352; if (numtracks == 0 && strlen(isofile) >= 4 && - strcmp(isofile + strlen(isofile) - 4, ".cue") == 0) - { - // user selected .cue as image file, use it's data track instead + (strcmp(isofile + strlen(isofile) - 4, ".cue") == 0 || + strncasecmp(isofile + strlen(isofile) - 4, ".cd", 3) == 0)) { + // user selected .cue/.cdX as image file, use it's data track instead fclose(cdHandle); cdHandle = fopen(filepath, "rb"); } @@ -475,6 +472,10 @@ static int parsecue(const char *isofile) { fclose(fi); + // if there are no tracks detected, then it's not a cue file + if (!numtracks) + return -1; + return 0; } @@ -564,7 +565,8 @@ static int parsemds(const char *isofile) { memset(&ti, 0, sizeof(ti)); // check if it's a valid mds file - fread(&i, 1, sizeof(unsigned int), fi); + if (fread(&i, 1, sizeof(i), fi) != sizeof(i)) + goto fail_io; i = SWAP32(i); if (i != 0x4944454D) { // not an valid mds file @@ -574,19 +576,22 @@ static int parsemds(const char *isofile) { // get offset to session block fseek(fi, 0x50, SEEK_SET); - fread(&offset, 1, sizeof(unsigned int), fi); + if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset)) + goto fail_io; offset = SWAP32(offset); // get total number of tracks offset += 14; fseek(fi, offset, SEEK_SET); - fread(&s, 1, sizeof(unsigned short), fi); + if (fread(&s, 1, sizeof(s), fi) != sizeof(s)) + goto fail_io; s = SWAP16(s); numtracks = s; // get offset to track blocks fseek(fi, 4, SEEK_CUR); - fread(&offset, 1, sizeof(unsigned int), fi); + if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset)) + goto fail_io; offset = SWAP32(offset); // skip lead-in data @@ -615,32 +620,41 @@ static int parsemds(const char *isofile) { ti[i].start[1] = fgetc(fi); ti[i].start[2] = fgetc(fi); - fread(&extra_offset, 1, sizeof(unsigned int), fi); + if (fread(&extra_offset, 1, sizeof(extra_offset), fi) != sizeof(extra_offset)) + goto fail_io; extra_offset = SWAP32(extra_offset); // get track start offset (in .mdf) fseek(fi, offset + 0x28, SEEK_SET); - fread(&l, 1, sizeof(unsigned int), fi); + if (fread(&l, 1, sizeof(l), fi) != sizeof(l)) + goto fail_io; l = SWAP32(l); ti[i].start_offset = l; // get pregap fseek(fi, extra_offset, SEEK_SET); - fread(&l, 1, sizeof(unsigned int), fi); + if (fread(&l, 1, sizeof(l), fi) != sizeof(l)) + goto fail_io; l = SWAP32(l); if (l != 0 && i > 1) pregapOffset = msf2sec(ti[i].start); // get the track length - fread(&l, 1, sizeof(unsigned int), fi); + if (fread(&l, 1, sizeof(l), fi) != sizeof(l)) + goto fail_io; l = SWAP32(l); sec2msf(l, ti[i].length); offset += 0x50; } - fclose(fi); return 0; +fail_io: +#ifndef NDEBUG + SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__); +#endif + fclose(fi); + return -1; } static int handlepbp(const char *isofile) { @@ -666,6 +680,7 @@ static int handlepbp(const char *isofile) { off_t psisoimg_offs, cdimg_base; unsigned int t, cd_length; unsigned int offsettab[8]; + unsigned int psar_offs, index_entry_size, index_entry_offset; const char *ext = NULL; int i, ret; @@ -684,20 +699,23 @@ static int handlepbp(const char *isofile) { goto fail_io; } - ret = fseeko(cdHandle, pbp_hdr.psar_offs, SEEK_SET); + psar_offs = SWAP32(pbp_hdr.psar_offs); + + ret = fseeko(cdHandle, psar_offs, SEEK_SET); if (ret != 0) { - SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs); + SysPrintf("failed to seek to %x\n", psar_offs); goto fail_io; } - psisoimg_offs = pbp_hdr.psar_offs; - fread(psar_sig, 1, sizeof(psar_sig), cdHandle); + psisoimg_offs = psar_offs; + if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig)) + goto fail_io; psar_sig[10] = 0; if (strcmp(psar_sig, "PSTITLEIMG") == 0) { // multidisk image? - ret = fseeko(cdHandle, pbp_hdr.psar_offs + 0x200, SEEK_SET); + ret = fseeko(cdHandle, psar_offs + 0x200, SEEK_SET); if (ret != 0) { - SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs + 0x200); + SysPrintf("failed to seek to %x\n", psar_offs + 0x200); goto fail_io; } @@ -719,7 +737,7 @@ static int handlepbp(const char *isofile) { if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount) cdrIsoMultidiskSelect = 0; - psisoimg_offs += offsettab[cdrIsoMultidiskSelect]; + psisoimg_offs += SWAP32(offsettab[cdrIsoMultidiskSelect]); ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET); if (ret != 0) { @@ -727,7 +745,8 @@ static int handlepbp(const char *isofile) { goto fail_io; } - fread(psar_sig, 1, sizeof(psar_sig), cdHandle); + if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig)) + goto fail_io; psar_sig[10] = 0; } @@ -745,15 +764,18 @@ static int handlepbp(const char *isofile) { // first 3 entries are special fseek(cdHandle, sizeof(toc_entry), SEEK_CUR); - fread(&toc_entry, 1, sizeof(toc_entry), cdHandle); + if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry)) + goto fail_io; numtracks = btoi(toc_entry.index1[0]); - fread(&toc_entry, 1, sizeof(toc_entry), cdHandle); + if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry)) + goto fail_io; cd_length = btoi(toc_entry.index1[0]) * 60 * 75 + btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]); for (i = 1; i <= numtracks; i++) { - fread(&toc_entry, 1, sizeof(toc_entry), cdHandle); + if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry)) + goto fail_io; ti[i].type = (toc_entry.type == 1) ? CDDA : DATA; @@ -799,19 +821,29 @@ static int handlepbp(const char *isofile) { goto fail_index; } - if (index_entry.size == 0) + index_entry_size = SWAP32(index_entry.size); + index_entry_offset = SWAP32(index_entry.offset); + + if (index_entry_size == 0) break; - compr_img->index_table[i] = cdimg_base + index_entry.offset; + compr_img->index_table[i] = cdimg_base + index_entry_offset; } - compr_img->index_table[i] = cdimg_base + index_entry.offset + index_entry.size; + compr_img->index_table[i] = cdimg_base + index_entry_offset + index_entry_size; return 0; fail_index: free(compr_img->index_table); compr_img->index_table = NULL; + goto done; + fail_io: +#ifndef NDEBUG + SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__); +#endif + +done: if (compr_img != NULL) { free(compr_img); compr_img = NULL; @@ -905,24 +937,28 @@ fail_io: #ifdef HAVE_CHD static int handlechd(const char *isofile) { - int frame_offset = 0; + int frame_offset = 150; int file_offset = 0; - chd_img = (CHD_IMG *)calloc(1, sizeof(*chd_img)); + chd_img = calloc(1, sizeof(*chd_img)); if (chd_img == NULL) goto fail_io; if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE) goto fail_io; + if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE)) + goto fail_io; + chd_img->header = chd_get_header(chd_img->chd); - chd_img->buffer = (unsigned char (*)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE])malloc(chd_img->header->hunkbytes); + chd_img->buffer = malloc(chd_img->header->hunkbytes * 2); if (chd_img->buffer == NULL) goto fail_io; chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE); - chd_img->current_hunk = (unsigned int)-1; + chd_img->current_hunk[0] = (unsigned int)-1; + chd_img->current_hunk[1] = (unsigned int)-1; cddaBigEndian = TRUE; @@ -951,20 +987,26 @@ static int handlechd(const char *isofile) { else break; - if(md.track == 1) - md.pregap = 150; - else - sec2msf(msf2sec(ti[md.track-1].length) + md.pregap, ti[md.track-1].length); + SysPrintf("chd: %s\n", meta); + + if (md.track == 1) { + if (!strncmp(md.subtype, "RW", 2)) { + subChanMixed = TRUE; + if (!strcmp(md.subtype, "RW_RAW")) + subChanRaw = TRUE; + } + } ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA; sec2msf(frame_offset + md.pregap, ti[md.track].start); sec2msf(md.frames, ti[md.track].length); - ti[md.track].start_offset = file_offset; + ti[md.track].start_offset = file_offset + md.pregap; - frame_offset += md.pregap + md.frames + md.postgap; - file_offset += md.frames + md.postgap; + // XXX: what about postgap? + frame_offset += md.frames; + file_offset += md.frames; numtracks++; } @@ -1004,12 +1046,17 @@ static int opensubfile(const char *isoname) { } static int opensbifile(const char *isoname) { - char sbiname[MAXPATHLEN]; + char sbiname[MAXPATHLEN], disknum[MAXPATHLEN] = "0"; int s; strncpy(sbiname, isoname, sizeof(sbiname)); sbiname[MAXPATHLEN - 1] = '\0'; if (strlen(sbiname) >= 4) { + if (cdrIsoMultidiskCount > 1) { + sprintf(disknum, "_%i.sbi", cdrIsoMultidiskSelect + 1); + strcpy(sbiname + strlen(sbiname) - 4, disknum); + } + else strcpy(sbiname + strlen(sbiname) - 4, ".sbi"); } else { @@ -1024,21 +1071,48 @@ static int opensbifile(const char *isoname) { static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector) { - fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET); - return fread(dest, 1, CD_FRAMESIZE_RAW, f); + int ret; + if (fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET)) + goto fail_io; + ret = fread(dest, 1, CD_FRAMESIZE_RAW, f); + if (ret <= 0) + goto fail_io; + return ret; + +fail_io: + // often happens in cdda gaps of a split cue/bin, so not logged + //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector); + return -1; } static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector) { int ret; - fseek(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET); + if (fseek(f, base + sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET)) + goto fail_io; ret = fread(dest, 1, CD_FRAMESIZE_RAW, f); - fread(subbuffer, 1, SUB_FRAMESIZE, f); + if (ret <= 0) + goto fail_io; + return ret; - if (subChanRaw) DecodeRawSubData(); +fail_io: + //SysPrintf("File IO error %d, base %u, sector %u\n", errno, base, sector); + return -1; +} - return ret; +static int cdread_sub_sub_mixed(FILE *f, int sector) +{ + if (fseek(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + CD_FRAMESIZE_RAW, SEEK_SET)) + goto fail_io; + if (fread(subbuffer, 1, SUB_FRAMESIZE, f) != SUB_FRAMESIZE) + goto fail_io; + + return SUB_FRAMESIZE; + +fail_io: + SysPrintf("subchannel: file IO error %d, sector %u\n", errno, sector); + return -1; } static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size) @@ -1143,27 +1217,66 @@ finish: } #ifdef HAVE_CHD +static unsigned char *chd_get_sector(unsigned int current_buffer, unsigned int sector_in_hunk) +{ + return chd_img->buffer + + current_buffer * chd_img->header->hunkbytes + + sector_in_hunk * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE); +} + static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector) { int hunk; - if (base) - sector += base; + sector += base; hunk = sector / chd_img->sectors_per_hunk; chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk; - if (hunk != chd_img->current_hunk) + if (hunk == chd_img->current_hunk[0]) + chd_img->current_buffer = 0; + else if (hunk == chd_img->current_hunk[1]) + chd_img->current_buffer = 1; + else { - chd_read(chd_img->chd, hunk, chd_img->buffer); - chd_img->current_hunk = hunk; + chd_read(chd_img->chd, hunk, chd_img->buffer + + chd_img->current_buffer * chd_img->header->hunkbytes); + chd_img->current_hunk[chd_img->current_buffer] = hunk; } if (dest != cdbuffer) // copy avoid HACK - memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk], + memcpy(dest, chd_get_sector(chd_img->current_buffer, chd_img->sector_in_hunk), CD_FRAMESIZE_RAW); return CD_FRAMESIZE_RAW; } + +static int cdread_sub_chd(FILE *f, int sector) +{ + unsigned int sector_in_hunk; + unsigned int buffer; + int hunk; + + if (!subChanMixed) + return -1; + + hunk = sector / chd_img->sectors_per_hunk; + sector_in_hunk = sector % chd_img->sectors_per_hunk; + + if (hunk == chd_img->current_hunk[0]) + buffer = 0; + else if (hunk == chd_img->current_hunk[1]) + buffer = 1; + else + { + buffer = chd_img->current_buffer ^ 1; + chd_read(chd_img->chd, hunk, chd_img->buffer + + buffer * chd_img->header->hunkbytes); + chd_img->current_hunk[buffer] = hunk; + } + + memcpy(subbuffer, chd_get_sector(buffer, sector_in_hunk) + CD_FRAMESIZE_RAW, SUB_FRAMESIZE); + return SUB_FRAMESIZE; +} #endif static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector) @@ -1178,7 +1291,7 @@ static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector) sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]); cdbuffer[12 + 3] = 1; - return ret; + return 12*2 + ret; } static unsigned char * CALLBACK ISOgetBuffer_compr(void) { @@ -1186,8 +1299,8 @@ static unsigned char * CALLBACK ISOgetBuffer_compr(void) { } #ifdef HAVE_CHD -static unsigned char *ISOgetBuffer_chd(void) { - return chd_img->buffer[chd_img->sector_in_hunk] + 12; +static unsigned char * CALLBACK ISOgetBuffer_chd(void) { + return chd_get_sector(chd_img->current_buffer, chd_img->sector_in_hunk) + 12; } #endif @@ -1212,6 +1325,7 @@ static long CALLBACK ISOopen(void) { boolean isMode1ISO = FALSE; char alt_bin_filename[MAXPATHLEN]; const char *bin_filename; + char image_str[1024]; if (cdHandle != NULL) { return 0; // it's already open @@ -1224,7 +1338,8 @@ static long CALLBACK ISOopen(void) { return -1; } - SysPrintf(_("Loaded CD Image: %s"), GetIsoFile()); + snprintf(image_str, sizeof(image_str) - 6*4 - 1, + "Loaded CD Image: %s", GetIsoFile()); cddaBigEndian = FALSE; subChanMixed = FALSE; @@ -1235,43 +1350,44 @@ static long CALLBACK ISOopen(void) { CDR_getBuffer = ISOgetBuffer; cdimg_read_func = cdread_normal; + cdimg_read_sub_func = NULL; if (parsetoc(GetIsoFile()) == 0) { - SysPrintf("[+toc]"); + strcat(image_str, "[+toc]"); } else if (parseccd(GetIsoFile()) == 0) { - SysPrintf("[+ccd]"); + strcat(image_str, "[+ccd]"); } else if (parsemds(GetIsoFile()) == 0) { - SysPrintf("[+mds]"); + strcat(image_str, "[+mds]"); } else if (parsecue(GetIsoFile()) == 0) { - SysPrintf("[+cue]"); + strcat(image_str, "[+cue]"); } if (handlepbp(GetIsoFile()) == 0) { - SysPrintf("[pbp]"); + strcat(image_str, "[+pbp]"); CDR_getBuffer = ISOgetBuffer_compr; cdimg_read_func = cdread_compressed; } else if (handlecbin(GetIsoFile()) == 0) { - SysPrintf("[cbin]"); + strcat(image_str, "[+cbin]"); CDR_getBuffer = ISOgetBuffer_compr; cdimg_read_func = cdread_compressed; } - #ifdef HAVE_CHD else if (handlechd(GetIsoFile()) == 0) { - printf("[chd]"); + strcat(image_str, "[+chd]"); CDR_getBuffer = ISOgetBuffer_chd; cdimg_read_func = cdread_chd; + cdimg_read_sub_func = cdread_sub_chd; } #endif if (!subChanMixed && opensubfile(GetIsoFile()) == 0) { - SysPrintf("[+sub]"); + strcat(image_str, "[+sub]"); } if (opensbifile(GetIsoFile()) == 0) { - SysPrintf("[+sbi]"); + strcat(image_str, "[+sbi]"); } fseeko(cdHandle, 0, SEEK_END); @@ -1304,25 +1420,31 @@ static long CALLBACK ISOopen(void) { } // guess whether it is mode1/2048 - if (ftello(cdHandle) % 2048 == 0) { + if (cdimg_read_func == cdread_normal && ftello(cdHandle) % 2048 == 0) { unsigned int modeTest = 0; fseek(cdHandle, 0, SEEK_SET); - fread(&modeTest, 4, 1, cdHandle); + if (!fread(&modeTest, sizeof(modeTest), 1, cdHandle)) { + SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__); + } if (SWAP32(modeTest) != 0xffffff00) { - SysPrintf("[2048]"); + strcat(image_str, "[2048]"); isMode1ISO = TRUE; } } fseek(cdHandle, 0, SEEK_SET); - SysPrintf(".\n"); + SysPrintf("%s.\n", image_str); PrintTracks(); - if (subChanMixed) + if (subChanMixed && cdimg_read_func == cdread_normal) { cdimg_read_func = cdread_sub_mixed; - else if (isMode1ISO) + cdimg_read_sub_func = cdread_sub_sub_mixed; + } + else if (isMode1ISO) { cdimg_read_func = cdread_2048; + cdimg_read_sub_func = NULL; + } // make sure we have another handle open for cdda if (numtracks > 1 && ti[1].handle == NULL) { @@ -1343,7 +1465,7 @@ static long CALLBACK ISOclose(void) { fclose(subHandle); subHandle = NULL; } - stopCDDA(); + playing = FALSE; cddaHandle = NULL; if (compr_img != NULL) { @@ -1462,26 +1584,13 @@ static boolean CALLBACK ISOreadTrack(unsigned char *time) { return 0; } - if (pregapOffset) { - subChanMissing = FALSE; - if (sector >= pregapOffset) { - sector -= 2 * 75; - if (sector < pregapOffset) - subChanMissing = TRUE; - } - } + if (pregapOffset && sector >= pregapOffset) + sector -= 2 * 75; ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector); - if (ret < 0) + if (ret < 12*2 + 2048) return 0; - if (subHandle != NULL) { - fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET); - fread(subbuffer, 1, SUB_FRAMESIZE, subHandle); - - if (subChanRaw) DecodeRawSubData(); - } - return 1; } @@ -1495,17 +1604,34 @@ static long CALLBACK ISOplay(unsigned char *time) { // stops cdda audio static long CALLBACK ISOstop(void) { - stopCDDA(); + playing = FALSE; return 0; } // gets subchannel data -static unsigned char* CALLBACK ISOgetBufferSub(void) { - if ((subHandle != NULL || subChanMixed) && !subChanMissing) { - return subbuffer; +static unsigned char* CALLBACK ISOgetBufferSub(int sector) { + if (pregapOffset && sector >= pregapOffset) { + sector -= 2 * 75; + if (sector < pregapOffset) // ? + return NULL; } - return NULL; + if (cdimg_read_sub_func != NULL) { + if (cdimg_read_sub_func(cdHandle, sector) != SUB_FRAMESIZE) + return NULL; + } + else if (subHandle != NULL) { + if (fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET)) + return NULL; + if (fread(subbuffer, 1, SUB_FRAMESIZE, subHandle) != SUB_FRAMESIZE) + return NULL; + } + else { + return NULL; + } + + if (subChanRaw) DecodeRawSubData(); + return subbuffer; } static long CALLBACK ISOgetStatus(struct CdrStat *stat) {