/*************************************************************************** * Copyright (C) 2007 PCSX-df Team * * Copyright (C) 2009 Wei Mingzhi * * Copyright (C) 2012 notaz * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * ***************************************************************************/ #include "psxcommon.h" #include "plugins.h" #include "cdrom.h" #include "cdriso.h" #include "ppf.h" #include #include #ifdef HAVE_CHD #include #endif #ifdef _WIN32 #define WIN32_LEAN_AND_MEAN #include #include #define strcasecmp _stricmp #define usleep(x) (Sleep((x) / 1000)) #else #include #include #include #endif #define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1)) unsigned int cdrIsoMultidiskCount; unsigned int cdrIsoMultidiskSelect; static FILE *cdHandle = NULL; static FILE *cddaHandle = NULL; static FILE *subHandle = NULL; static boolean subChanMixed = FALSE; static boolean subChanRaw = FALSE; static boolean subChanMissing = FALSE; static boolean multifile = FALSE; static unsigned char cdbuffer[CD_FRAMESIZE_RAW]; static unsigned char subbuffer[SUB_FRAMESIZE]; static unsigned char sndbuffer[CD_FRAMESIZE_RAW * 10]; #define CDDA_FRAMETIME (1000 * (sizeof(sndbuffer) / CD_FRAMESIZE_RAW) / 75) #ifdef _WIN32 static HANDLE threadid; #else static pthread_t threadid; #endif static unsigned int initial_offset = 0; static boolean playing = FALSE; static boolean cddaBigEndian = FALSE; // cdda sectors in toc, byte offset in file static unsigned int cdda_cur_sector; static unsigned int cdda_first_sector; static unsigned int cdda_file_offset; /* Frame offset into CD image where pregap data would be found if it was there. * If a game seeks there we must *not* return subchannel data since it's * not in the CD image, so that cdrom code can fake subchannel data instead. * XXX: there could be multiple pregaps but PSX dumps only have one? */ static unsigned int pregapOffset; #define cddaCurPos cdda_cur_sector // compressed image stuff static struct { unsigned char buff_raw[16][CD_FRAMESIZE_RAW]; unsigned char buff_compressed[CD_FRAMESIZE_RAW * 16 + 100]; off_t *index_table; unsigned int index_len; unsigned int block_shift; unsigned int current_block; unsigned int sector_in_blk; } *compr_img; #ifdef HAVE_CHD static struct { unsigned char (*buffer)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE]; chd_file* chd; const chd_header* header; unsigned int sectors_per_hunk; unsigned int current_hunk; unsigned int sector_in_hunk; } *chd_img; #endif int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector); char* CALLBACK CDR__getDriveLetter(void); long CALLBACK CDR__configure(void); long CALLBACK CDR__test(void); void CALLBACK CDR__about(void); long CALLBACK CDR__setfilename(char *filename); long CALLBACK CDR__getStatus(struct CdrStat *stat); static void DecodeRawSubData(void); struct trackinfo { enum {DATA=1, CDDA} type; 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 }; #define MAXTRACKS 100 /* How many tracks can a CD hold? */ static int numtracks = 0; static struct trackinfo ti[MAXTRACKS]; // get a sector from a msf-array static unsigned int msf2sec(char *msf) { return ((msf[0] * 60 + msf[1]) * 75) + msf[2]; } static void sec2msf(unsigned int s, char *msf) { msf[0] = s / 75 / 60; s = s - msf[0] * 75 * 60; msf[1] = s / 75; s = s - msf[1] * 75; msf[2] = s; } // divide a string of xx:yy:zz into m, s, f static void tok2msf(char *time, char *msf) { char *token; token = strtok(time, ":"); if (token) { msf[0] = atoi(token); } else { msf[0] = 0; } token = strtok(NULL, ":"); if (token) { msf[1] = atoi(token); } else { msf[1] = 0; } token = strtok(NULL, ":"); if (token) { msf[2] = atoi(token); } else { msf[2] = 0; } } #ifndef _WIN32 static long GetTickCount(void) { static time_t initial_time = 0; struct timeval now; gettimeofday(&now, NULL); if (initial_time == 0) { initial_time = now.tv_sec; } return (now.tv_sec - initial_time) * 1000L + now.tv_usec / 1000L; } #endif // this thread plays audio data #ifdef _WIN32 static void playthread(void *param) #else static void *playthread(void *param) #endif { long osleep, d, t, i, s; unsigned char tmp; int ret = 0, sector_offs; t = GetTickCount(); while (playing) { s = 0; for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) { sector_offs = cdda_cur_sector - cdda_first_sector; if (sector_offs < 0) { d = CD_FRAMESIZE_RAW; memset(sndbuffer + s, 0, d); } else { d = cdimg_read_func(cddaHandle, cdda_file_offset, sndbuffer + s, sector_offs); if (d < CD_FRAMESIZE_RAW) break; } s += d; cdda_cur_sector++; } if (s == 0) { playing = FALSE; initial_offset = 0; break; } if (!cdr.Muted && playing) { if (cddaBigEndian) { for (i = 0; i < s / 2; i++) { tmp = sndbuffer[i * 2]; sndbuffer[i * 2] = sndbuffer[i * 2 + 1]; sndbuffer[i * 2 + 1] = tmp; } } // can't do it yet due to readahead.. //cdrAttenuate((short *)sndbuffer, s / 4, 1); do { ret = SPU_playCDDAchannel((short *)sndbuffer, s); if (ret == 0x7761) { usleep(6 * 1000); } } while (ret == 0x7761 && playing); // rearmed_wait } if (ret != 0x676f) { // !rearmed_go // do approx sleep long now; // HACK: stop feeding data while emu is paused extern int stop; while (stop && playing) { usleep(10000); } now = GetTickCount(); osleep = t - now; if (osleep <= 0) { osleep = 1; t = now; } else if (osleep > CDDA_FRAMETIME) { osleep = CDDA_FRAMETIME; t = now; } usleep(osleep * 1000); t += CDDA_FRAMETIME; } } #ifdef _WIN32 _endthread(); #else pthread_exit(0); return NULL; #endif } // stop the CDDA playback static void stopCDDA() { if (!playing) { return; } playing = FALSE; #ifdef _WIN32 WaitForSingleObject(threadid, INFINITE); #else pthread_join(threadid, NULL); #endif } // start the CDDA playback static void startCDDA(void) { if (playing) { stopCDDA(); } playing = TRUE; #ifdef _WIN32 threadid = (HANDLE)_beginthread(playthread, 0, NULL); #else pthread_create(&threadid, NULL, playthread, NULL); #endif } // 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) { char tocname[MAXPATHLEN]; FILE *fi; char linebuf[256], tmp[256], name[256]; char *token; char time[20], time2[20]; unsigned int t, sector_offs, sector_size; unsigned int current_zero_gap = 0; numtracks = 0; // copy name of the iso and change extension from .bin to .toc strncpy(tocname, isofile, sizeof(tocname)); tocname[MAXPATHLEN - 1] = '\0'; if (strlen(tocname) >= 4) { strcpy(tocname + strlen(tocname) - 4, ".toc"); } else { return -1; } if ((fi = fopen(tocname, "r")) == NULL) { // try changing extension to .cue (to satisfy some stupid tutorials) strcpy(tocname + strlen(tocname) - 4, ".cue"); if ((fi = fopen(tocname, "r")) == NULL) { // if filename is image.toc.bin, try removing .bin (for Brasero) strcpy(tocname, isofile); t = strlen(tocname); if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) { tocname[t - 4] = '\0'; if ((fi = fopen(tocname, "r")) == NULL) { return -1; } } else { return -1; } } // check if it's really a TOC named as a .cue fgets(linebuf, sizeof(linebuf), fi); token = strtok(linebuf, " "); if (token && strncmp(token, "CD", 2) != 0 && strcmp(token, "CATALOG") != 0) { fclose(fi); return -1; } fseek(fi, 0, SEEK_SET); } memset(&ti, 0, sizeof(ti)); cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio sector_size = CD_FRAMESIZE_RAW; sector_offs = 2 * 75; // parse the .toc file while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { // search for tracks strncpy(tmp, linebuf, sizeof(linebuf)); token = strtok(tmp, " "); if (token == NULL) continue; if (!strcmp(token, "TRACK")) { sector_offs += current_zero_gap; current_zero_gap = 0; // get type of track token = strtok(NULL, " "); numtracks++; if (!strncmp(token, "MODE2_RAW", 9)) { ti[numtracks].type = DATA; sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0 // check if this image contains mixed subchannel data token = strtok(NULL, " "); if (token != NULL && !strncmp(token, "RW", 2)) { sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE; subChanMixed = TRUE; if (!strncmp(token, "RW_RAW", 6)) subChanRaw = TRUE; } } else if (!strncmp(token, "AUDIO", 5)) { ti[numtracks].type = CDDA; } } else if (!strcmp(token, "DATAFILE")) { if (ti[numtracks].type == CDDA) { sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2); ti[numtracks].start_offset = t; t = t / sector_size + sector_offs; sec2msf(t, (char *)&ti[numtracks].start); tok2msf((char *)&time2, (char *)&ti[numtracks].length); } else { sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time); tok2msf((char *)&time, (char *)&ti[numtracks].length); } } else if (!strcmp(token, "FILE")) { sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2); tok2msf((char *)&time, (char *)&ti[numtracks].start); t += msf2sec(ti[numtracks].start) * sector_size; ti[numtracks].start_offset = t; t = t / sector_size + sector_offs; sec2msf(t, (char *)&ti[numtracks].start); tok2msf((char *)&time2, (char *)&ti[numtracks].length); } else if (!strcmp(token, "ZERO") || !strcmp(token, "SILENCE")) { // skip unneeded optional fields while (token != NULL) { token = strtok(NULL, " "); if (strchr(token, ':') != NULL) break; } if (token != NULL) { tok2msf(token, tmp); current_zero_gap = msf2sec(tmp); } if (numtracks > 1) { t = ti[numtracks - 1].start_offset; t /= sector_size; pregapOffset = t + msf2sec(ti[numtracks - 1].length); } } else if (!strcmp(token, "START")) { token = strtok(NULL, " "); if (token != NULL && strchr(token, ':')) { tok2msf(token, tmp); t = msf2sec(tmp); ti[numtracks].start_offset += (t - current_zero_gap) * sector_size; t = msf2sec(ti[numtracks].start) + t; sec2msf(t, (char *)&ti[numtracks].start); } } } fclose(fi); return 0; } // this function tries to get the .cue file of the given .bin // the necessary data is put into the ti (trackinformation)-array static int parsecue(const char *isofile) { char cuename[MAXPATHLEN]; char filepath[MAXPATHLEN]; char *incue_fname; FILE *fi; char *token; char time[20]; char *tmp; char linebuf[256], tmpb[256], dummy[256]; unsigned int incue_max_len; unsigned int t, file_len, mode, sector_offs; unsigned int sector_size = 2352; numtracks = 0; // copy name of the iso and change extension from .bin to .cue 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 { return -1; } if ((fi = fopen(cuename, "r")) == NULL) { return -1; } // Some stupid tutorials wrongly tell users to use cdrdao to rip a // "bin/cue" image, which is in fact a "bin/toc" image. So let's check // that... if (fgets(linebuf, sizeof(linebuf), fi) != NULL) { if (!strncmp(linebuf, "CD_ROM_XA", 9)) { // Don't proceed further, as this is actually a .toc file rather // than a .cue file. fclose(fi); return parsetoc(isofile); } fseek(fi, 0, SEEK_SET); } // build a path for files referenced in .cue strncpy(filepath, cuename, sizeof(filepath)); tmp = strrchr(filepath, '/'); if (tmp == NULL) tmp = strrchr(filepath, '\\'); if (tmp != NULL) tmp++; else tmp = filepath; *tmp = 0; filepath[sizeof(filepath) - 1] = 0; incue_fname = tmp; incue_max_len = sizeof(filepath) - (tmp - filepath) - 1; memset(&ti, 0, sizeof(ti)); file_len = 0; sector_offs = 2 * 75; while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { strncpy(dummy, linebuf, sizeof(linebuf)); token = strtok(dummy, " "); if (token == NULL) { continue; } if (!strcmp(token, "TRACK")) { numtracks++; sector_size = 0; if (strstr(linebuf, "AUDIO") != NULL) { ti[numtracks].type = CDDA; sector_size = 2352; } else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, §or_size) == 3) ti[numtracks].type = DATA; else { SysPrintf(".cue: failed to parse TRACK\n"); ti[numtracks].type = numtracks == 1 ? DATA : CDDA; } if (sector_size == 0) sector_size = 2352; } else if (!strcmp(token, "INDEX")) { if (sscanf(linebuf, " INDEX %02d %8s", &t, time) != 2) SysPrintf(".cue: failed to parse INDEX\n"); tok2msf(time, (char *)&ti[numtracks].start); t = msf2sec(ti[numtracks].start); ti[numtracks].start_offset = t * sector_size; t += sector_offs; sec2msf(t, ti[numtracks].start); // default track length to file length t = file_len - ti[numtracks].start_offset / sector_size; sec2msf(t, ti[numtracks].length); if (numtracks > 1 && ti[numtracks].handle == NULL) { // this track uses the same file as the last, // start of this track is last track's end t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start); sec2msf(t, ti[numtracks - 1].length); } if (numtracks > 1 && pregapOffset == -1) pregapOffset = ti[numtracks].start_offset / sector_size; } else if (!strcmp(token, "PREGAP")) { if (sscanf(linebuf, " PREGAP %8s", time) == 1) { tok2msf(time, dummy); sector_offs += msf2sec(dummy); } pregapOffset = -1; // mark to fill track start_offset } else if (!strcmp(token, "FILE")) { t = sscanf(linebuf, " FILE \"%255[^\"]\"", tmpb); if (t != 1) sscanf(linebuf, " FILE %255s", tmpb); tmp = strrchr(tmpb, '\\'); if (tmp == NULL) tmp = strrchr(tmpb, '/'); if (tmp != NULL) tmp++; else tmp = tmpb; strncpy(incue_fname, tmp, incue_max_len); ti[numtracks + 1].handle = fopen(filepath, "rb"); // update global offset if this is not first file in this .cue if (numtracks + 1 > 1) { multifile = 1; sector_offs += file_len; } file_len = 0; if (ti[numtracks + 1].handle == NULL) { SysPrintf(_("\ncould not open: %s\n"), filepath); continue; } fseek(ti[numtracks + 1].handle, 0, SEEK_END); file_len = ftell(ti[numtracks + 1].handle) / 2352; if (numtracks == 0 && strlen(isofile) >= 4 && (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"); } } } fclose(fi); // if there are no tracks detected, then it's not a cue file if (!numtracks) return -1; return 0; } // this function tries to get the .ccd file of the given .img // the necessary data is put into the ti (trackinformation)-array static int parseccd(const char *isofile) { char ccdname[MAXPATHLEN]; FILE *fi; char linebuf[256]; unsigned int t; numtracks = 0; // copy name of the iso and change extension from .img to .ccd strncpy(ccdname, isofile, sizeof(ccdname)); ccdname[MAXPATHLEN - 1] = '\0'; if (strlen(ccdname) >= 4) { strcpy(ccdname + strlen(ccdname) - 4, ".ccd"); } else { return -1; } if ((fi = fopen(ccdname, "r")) == NULL) { return -1; } memset(&ti, 0, sizeof(ti)); while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { if (!strncmp(linebuf, "[TRACK", 6)){ numtracks++; } else if (!strncmp(linebuf, "MODE=", 5)) { sscanf(linebuf, "MODE=%d", &t); ti[numtracks].type = ((t == 0) ? CDDA : DATA); } else if (!strncmp(linebuf, "INDEX 1=", 8)) { sscanf(linebuf, "INDEX 1=%d", &t); sec2msf(t + 2 * 75, ti[numtracks].start); ti[numtracks].start_offset = t * 2352; // If we've already seen another track, this is its end if (numtracks > 1) { t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start); sec2msf(t, ti[numtracks - 1].length); } } } fclose(fi); // Fill out the last track's end based on size if (numtracks >= 1) { fseek(cdHandle, 0, SEEK_END); t = ftell(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75; sec2msf(t, ti[numtracks].length); } return 0; } // this function tries to get the .mds file of the given .mdf // the necessary data is put into the ti (trackinformation)-array static int parsemds(const char *isofile) { char mdsname[MAXPATHLEN]; FILE *fi; unsigned int offset, extra_offset, l, i; unsigned short s; numtracks = 0; // copy name of the iso and change extension from .mdf to .mds strncpy(mdsname, isofile, sizeof(mdsname)); mdsname[MAXPATHLEN - 1] = '\0'; if (strlen(mdsname) >= 4) { strcpy(mdsname + strlen(mdsname) - 4, ".mds"); } else { return -1; } if ((fi = fopen(mdsname, "rb")) == NULL) { return -1; } memset(&ti, 0, sizeof(ti)); // check if it's a valid mds file fread(&i, 1, sizeof(unsigned int), fi); i = SWAP32(i); if (i != 0x4944454D) { // not an valid mds file fclose(fi); return -1; } // get offset to session block fseek(fi, 0x50, SEEK_SET); fread(&offset, 1, sizeof(unsigned int), fi); offset = SWAP32(offset); // get total number of tracks offset += 14; fseek(fi, offset, SEEK_SET); fread(&s, 1, sizeof(unsigned short), fi); s = SWAP16(s); numtracks = s; // get offset to track blocks fseek(fi, 4, SEEK_CUR); fread(&offset, 1, sizeof(unsigned int), fi); offset = SWAP32(offset); // skip lead-in data while (1) { fseek(fi, offset + 4, SEEK_SET); if (fgetc(fi) < 0xA0) { break; } offset += 0x50; } // check if the image contains mixed subchannel data fseek(fi, offset + 1, SEEK_SET); subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE); // read track data for (i = 1; i <= numtracks; i++) { fseek(fi, offset, SEEK_SET); // get the track type ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA); fseek(fi, 8, SEEK_CUR); // get the track starting point ti[i].start[0] = fgetc(fi); ti[i].start[1] = fgetc(fi); ti[i].start[2] = fgetc(fi); fread(&extra_offset, 1, sizeof(unsigned int), fi); extra_offset = SWAP32(extra_offset); // get track start offset (in .mdf) fseek(fi, offset + 0x28, SEEK_SET); fread(&l, 1, sizeof(unsigned int), fi); l = SWAP32(l); ti[i].start_offset = l; // get pregap fseek(fi, extra_offset, SEEK_SET); fread(&l, 1, sizeof(unsigned int), fi); l = SWAP32(l); if (l != 0 && i > 1) pregapOffset = msf2sec(ti[i].start); // get the track length fread(&l, 1, sizeof(unsigned int), fi); l = SWAP32(l); sec2msf(l, ti[i].length); offset += 0x50; } fclose(fi); return 0; } static int handlepbp(const char *isofile) { struct { unsigned int sig; unsigned int dontcare[8]; unsigned int psar_offs; } pbp_hdr; struct { unsigned char type; unsigned char pad0; unsigned char track; char index0[3]; char pad1; char index1[3]; } toc_entry; struct { unsigned int offset; unsigned int size; unsigned int dontcare[6]; } index_entry; char psar_sig[11]; off_t psisoimg_offs, cdimg_base; unsigned int t, cd_length; unsigned int offsettab[8]; const char *ext = NULL; int i, ret; if (strlen(isofile) >= 4) ext = isofile + strlen(isofile) - 4; if (ext == NULL || (strcmp(ext, ".pbp") != 0 && strcmp(ext, ".PBP") != 0)) return -1; fseeko(cdHandle, 0, SEEK_SET); numtracks = 0; ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle); if (ret != sizeof(pbp_hdr)) { SysPrintf("failed to read pbp\n"); goto fail_io; } ret = fseeko(cdHandle, pbp_hdr.psar_offs, SEEK_SET); if (ret != 0) { SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs); goto fail_io; } psisoimg_offs = pbp_hdr.psar_offs; fread(psar_sig, 1, sizeof(psar_sig), cdHandle); psar_sig[10] = 0; if (strcmp(psar_sig, "PSTITLEIMG") == 0) { // multidisk image? ret = fseeko(cdHandle, pbp_hdr.psar_offs + 0x200, SEEK_SET); if (ret != 0) { SysPrintf("failed to seek to %x\n", pbp_hdr.psar_offs + 0x200); goto fail_io; } if (fread(&offsettab, 1, sizeof(offsettab), cdHandle) != sizeof(offsettab)) { SysPrintf("failed to read offsettab\n"); goto fail_io; } for (i = 0; i < sizeof(offsettab) / sizeof(offsettab[0]); i++) { if (offsettab[i] == 0) break; } cdrIsoMultidiskCount = i; if (cdrIsoMultidiskCount == 0) { SysPrintf("multidisk eboot has 0 images?\n"); goto fail_io; } if (cdrIsoMultidiskSelect >= cdrIsoMultidiskCount) cdrIsoMultidiskSelect = 0; psisoimg_offs += offsettab[cdrIsoMultidiskSelect]; ret = fseeko(cdHandle, psisoimg_offs, SEEK_SET); if (ret != 0) { SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs); goto fail_io; } fread(psar_sig, 1, sizeof(psar_sig), cdHandle); psar_sig[10] = 0; } if (strcmp(psar_sig, "PSISOIMG00") != 0) { SysPrintf("bad psar_sig: %s\n", psar_sig); goto fail_io; } // seek to TOC ret = fseeko(cdHandle, psisoimg_offs + 0x800, SEEK_SET); if (ret != 0) { SysPrintf("failed to seek to %llx\n", (long long)psisoimg_offs + 0x800); goto fail_io; } // first 3 entries are special fseek(cdHandle, sizeof(toc_entry), SEEK_CUR); fread(&toc_entry, 1, sizeof(toc_entry), cdHandle); numtracks = btoi(toc_entry.index1[0]); fread(&toc_entry, 1, sizeof(toc_entry), cdHandle); 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); ti[i].type = (toc_entry.type == 1) ? CDDA : DATA; ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 + btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]); ti[i].start_offset *= 2352; ti[i].start[0] = btoi(toc_entry.index1[0]); ti[i].start[1] = btoi(toc_entry.index1[1]); ti[i].start[2] = btoi(toc_entry.index1[2]); if (i > 1) { t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start); sec2msf(t, ti[i - 1].length); } } t = cd_length - ti[numtracks].start_offset / 2352; sec2msf(t, ti[numtracks].length); // seek to ISO index ret = fseeko(cdHandle, psisoimg_offs + 0x4000, SEEK_SET); if (ret != 0) { SysPrintf("failed to seek to ISO index\n"); goto fail_io; } compr_img = calloc(1, sizeof(*compr_img)); if (compr_img == NULL) goto fail_io; compr_img->block_shift = 4; compr_img->current_block = (unsigned int)-1; compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry); compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0])); if (compr_img->index_table == NULL) goto fail_io; cdimg_base = psisoimg_offs + 0x100000; for (i = 0; i < compr_img->index_len; i++) { ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle); if (ret != sizeof(index_entry)) { SysPrintf("failed to read index_entry #%d\n", i); goto fail_index; } 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 + index_entry.size; return 0; fail_index: free(compr_img->index_table); compr_img->index_table = NULL; fail_io: if (compr_img != NULL) { free(compr_img); compr_img = NULL; } return -1; } static int handlecbin(const char *isofile) { struct { char magic[4]; unsigned int header_size; unsigned long long total_bytes; unsigned int block_size; unsigned char ver; // 1 unsigned char align; unsigned char rsv_06[2]; } ciso_hdr; const char *ext = NULL; unsigned int *index_table = NULL; unsigned int index = 0, plain; int i, ret; if (strlen(isofile) >= 5) ext = isofile + strlen(isofile) - 5; if (ext == NULL || (strcasecmp(ext + 1, ".cbn") != 0 && strcasecmp(ext, ".cbin") != 0)) return -1; fseek(cdHandle, 0, SEEK_SET); ret = fread(&ciso_hdr, 1, sizeof(ciso_hdr), cdHandle); if (ret != sizeof(ciso_hdr)) { SysPrintf("failed to read ciso header\n"); return -1; } if (strncmp(ciso_hdr.magic, "CISO", 4) != 0 || ciso_hdr.total_bytes <= 0 || ciso_hdr.block_size <= 0) { SysPrintf("bad ciso header\n"); return -1; } if (ciso_hdr.header_size != 0 && ciso_hdr.header_size != sizeof(ciso_hdr)) { ret = fseeko(cdHandle, ciso_hdr.header_size, SEEK_SET); if (ret != 0) { SysPrintf("failed to seek to %x\n", ciso_hdr.header_size); return -1; } } compr_img = calloc(1, sizeof(*compr_img)); if (compr_img == NULL) goto fail_io; compr_img->block_shift = 0; compr_img->current_block = (unsigned int)-1; compr_img->index_len = ciso_hdr.total_bytes / ciso_hdr.block_size; index_table = malloc((compr_img->index_len + 1) * sizeof(index_table[0])); if (index_table == NULL) goto fail_io; ret = fread(index_table, sizeof(index_table[0]), compr_img->index_len, cdHandle); if (ret != compr_img->index_len) { SysPrintf("failed to read index table\n"); goto fail_index; } compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0])); if (compr_img->index_table == NULL) goto fail_index; for (i = 0; i < compr_img->index_len + 1; i++) { index = index_table[i]; plain = index & 0x80000000; index &= 0x7fffffff; compr_img->index_table[i] = (off_t)index << ciso_hdr.align; if (plain) compr_img->index_table[i] |= OFF_T_MSB; } return 0; fail_index: free(index_table); fail_io: if (compr_img != NULL) { free(compr_img); compr_img = NULL; } return -1; } #ifdef HAVE_CHD static int handlechd(const char *isofile) { 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 = malloc(chd_img->header->hunkbytes); 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; cddaBigEndian = TRUE; numtracks = 0; int frame_offset = 0; int file_offset = 0; memset(ti, 0, sizeof(ti)); while (1) { struct { char type[64]; char subtype[32]; char pgtype[32]; char pgsub[32]; uint32_t track; uint32_t frames; uint32_t pregap; uint32_t postgap; } md = {}; char meta[256]; uint32_t meta_size = 0; if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE) sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap); else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE) sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames); else break; if(md.track == 1) md.pregap = 150; else sec2msf(msf2sec(ti[md.track-1].length) + md.pregap, ti[md.track-1].length); 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; frame_offset += md.pregap + md.frames + md.postgap; file_offset += md.frames + md.postgap; numtracks++; } if (numtracks) return 0; fail_io: if (chd_img != NULL) { free(chd_img->buffer); free(chd_img); chd_img = NULL; } return -1; } #endif // this function tries to get the .sub file of the given .img static int opensubfile(const char *isoname) { char subname[MAXPATHLEN]; // copy name of the iso and change extension from .img to .sub strncpy(subname, isoname, sizeof(subname)); subname[MAXPATHLEN - 1] = '\0'; if (strlen(subname) >= 4) { strcpy(subname + strlen(subname) - 4, ".sub"); } else { return -1; } subHandle = fopen(subname, "rb"); if (subHandle == NULL) { return -1; } return 0; } static int opensbifile(const char *isoname) { 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 { return -1; } fseek(cdHandle, 0, SEEK_END); s = ftell(cdHandle) / 2352; return LoadSBI(sbiname, s); } #ifdef _WIN32 static void readThreadStop() {} static void readThreadStart() {} #else static pthread_t read_thread_id; static pthread_cond_t read_thread_msg_avail; static pthread_cond_t read_thread_msg_done; static pthread_mutex_t read_thread_msg_lock; static pthread_cond_t sectorbuffer_cond; static pthread_mutex_t sectorbuffer_lock; static boolean read_thread_running = FALSE; static int read_thread_sector_start = -1; static int read_thread_sector_end = -1; typedef struct { int sector; long ret; unsigned char data[CD_FRAMESIZE_RAW]; } SectorBufferEntry; #define SECTOR_BUFFER_SIZE 4096 static SectorBufferEntry *sectorbuffer; static size_t sectorbuffer_index; int (*sync_cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector); unsigned char *(*sync_CDR_getBuffer)(void); static unsigned char * CALLBACK ISOgetBuffer_async(void); static int cdread_async(FILE *f, unsigned int base, void *dest, int sector); static void *readThreadMain(void *param) { int max_sector = -1; int requested_sector_start = -1; int requested_sector_end = -1; int last_read_sector = -1; int index = 0; int ra_sector = -1; int max_ra = 128; int initial_ra = 1; int speedmult_ra = 4; int ra_count = 0; int how_far_ahead = 0; unsigned char tmpdata[CD_FRAMESIZE_RAW]; long ret; max_sector = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length); while(1) { pthread_mutex_lock(&read_thread_msg_lock); // If we don't have readahead and we don't have a sector request, wait for one. // If we still have readahead to go, don't block, just keep going. // And if we ever have a sector request pending, acknowledge and reset it. if (!ra_count) { if (read_thread_sector_start == -1 && read_thread_running) { pthread_cond_wait(&read_thread_msg_avail, &read_thread_msg_lock); } } if (read_thread_sector_start != -1) { requested_sector_start = read_thread_sector_start; requested_sector_end = read_thread_sector_end; read_thread_sector_start = -1; read_thread_sector_end = -1; pthread_cond_signal(&read_thread_msg_done); } pthread_mutex_unlock(&read_thread_msg_lock); if (!read_thread_running) break; // Readahead code, based on the implementation in mednafen psx's cdromif.cpp if (requested_sector_start != -1) { if (last_read_sector != -1 && last_read_sector == (requested_sector_start - 1)) { how_far_ahead = ra_sector - requested_sector_end; if(how_far_ahead <= max_ra) ra_count = (max_ra - how_far_ahead + 1 ? max_ra - how_far_ahead + 1 : speedmult_ra); else ra_count++; } else if (requested_sector_end != last_read_sector) { ra_sector = requested_sector_end; ra_count = initial_ra; } last_read_sector = requested_sector_end; } index = ra_sector % SECTOR_BUFFER_SIZE; // check for end of CD if (ra_count && ra_sector >= max_sector) { ra_count = 0; pthread_mutex_lock(§orbuffer_lock); sectorbuffer[index].ret = -1; sectorbuffer[index].sector = ra_sector; pthread_cond_signal(§orbuffer_cond); pthread_mutex_unlock(§orbuffer_lock); } if (ra_count) { pthread_mutex_lock(§orbuffer_lock); if (sectorbuffer[index].sector != ra_sector) { pthread_mutex_unlock(§orbuffer_lock); ret = sync_cdimg_read_func(cdHandle, 0, tmpdata, ra_sector); pthread_mutex_lock(§orbuffer_lock); sectorbuffer[index].ret = ret; sectorbuffer[index].sector = ra_sector; memcpy(sectorbuffer[index].data, tmpdata, CD_FRAMESIZE_RAW); } pthread_cond_signal(§orbuffer_cond); pthread_mutex_unlock(§orbuffer_lock); ra_sector++; ra_count--; } } return NULL; } static void readThreadStop() { if (read_thread_running == TRUE) { read_thread_running = FALSE; pthread_cond_signal(&read_thread_msg_avail); pthread_join(read_thread_id, NULL); } pthread_cond_destroy(&read_thread_msg_done); pthread_cond_destroy(&read_thread_msg_avail); pthread_mutex_destroy(&read_thread_msg_lock); pthread_cond_destroy(§orbuffer_cond); pthread_mutex_destroy(§orbuffer_lock); CDR_getBuffer = sync_CDR_getBuffer; cdimg_read_func = sync_cdimg_read_func; free(sectorbuffer); sectorbuffer = NULL; } static void readThreadStart() { SysPrintf("Starting async CD thread\n"); if (read_thread_running == TRUE) return; read_thread_running = TRUE; read_thread_sector_start = -1; read_thread_sector_end = -1; sectorbuffer_index = 0; sectorbuffer = calloc(SECTOR_BUFFER_SIZE, sizeof(SectorBufferEntry)); if(!sectorbuffer) goto error; sectorbuffer[0].sector = -1; // Otherwise we might think we've already fetched sector 0! sync_CDR_getBuffer = CDR_getBuffer; CDR_getBuffer = ISOgetBuffer_async; sync_cdimg_read_func = cdimg_read_func; cdimg_read_func = cdread_async; if (pthread_cond_init(&read_thread_msg_avail, NULL) || pthread_cond_init(&read_thread_msg_done, NULL) || pthread_mutex_init(&read_thread_msg_lock, NULL) || pthread_cond_init(§orbuffer_cond, NULL) || pthread_mutex_init(§orbuffer_lock, NULL) || pthread_create(&read_thread_id, NULL, readThreadMain, NULL)) goto error; return; error: SysPrintf("Error starting async CD thread\n"); SysPrintf("Falling back to sync\n"); readThreadStop(); } #endif 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); } 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); ret = fread(dest, 1, CD_FRAMESIZE_RAW, f); fread(subbuffer, 1, SUB_FRAMESIZE, f); if (subChanRaw) DecodeRawSubData(); return ret; } static int uncompress2_pcsx(void *out, unsigned long *out_size, void *in, unsigned long in_size) { static z_stream z; int ret = 0; if (z.zalloc == NULL) { // XXX: one-time leak here.. z.next_in = Z_NULL; z.avail_in = 0; z.zalloc = Z_NULL; z.zfree = Z_NULL; z.opaque = Z_NULL; ret = inflateInit2(&z, -15); } else ret = inflateReset(&z); if (ret != Z_OK) return ret; z.next_in = in; z.avail_in = in_size; z.next_out = out; z.avail_out = *out_size; ret = inflate(&z, Z_NO_FLUSH); //inflateEnd(&z); *out_size -= z.avail_out; return ret == 1 ? 0 : ret; } static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector) { unsigned long cdbuffer_size, cdbuffer_size_expect; unsigned int size; int is_compressed; off_t start_byte; int ret, block; if (base) sector += base / 2352; block = sector >> compr_img->block_shift; compr_img->sector_in_blk = sector & ((1 << compr_img->block_shift) - 1); if (block == compr_img->current_block) { //printf("hit sect %d\n", sector); goto finish; } if (sector >= compr_img->index_len * 16) { SysPrintf("sector %d is past img end\n", sector); return -1; } start_byte = compr_img->index_table[block] & ~OFF_T_MSB; if (fseeko(cdHandle, start_byte, SEEK_SET) != 0) { SysPrintf("seek error for block %d at %llx: ", block, (long long)start_byte); perror(NULL); return -1; } is_compressed = !(compr_img->index_table[block] & OFF_T_MSB); size = (compr_img->index_table[block + 1] & ~OFF_T_MSB) - start_byte; if (size > sizeof(compr_img->buff_compressed)) { SysPrintf("block %d is too large: %u\n", block, size); return -1; } if (fread(is_compressed ? compr_img->buff_compressed : compr_img->buff_raw[0], 1, size, cdHandle) != size) { SysPrintf("read error for block %d at %x: ", block, start_byte); perror(NULL); return -1; } if (is_compressed) { cdbuffer_size_expect = sizeof(compr_img->buff_raw[0]) << compr_img->block_shift; cdbuffer_size = cdbuffer_size_expect; ret = uncompress2_pcsx(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size); if (ret != 0) { SysPrintf("uncompress failed with %d for block %d, sector %d\n", ret, block, sector); return -1; } if (cdbuffer_size != cdbuffer_size_expect) SysPrintf("cdbuffer_size: %lu != %lu, sector %d\n", cdbuffer_size, cdbuffer_size_expect, sector); } // done at last! compr_img->current_block = block; finish: if (dest != cdbuffer) // copy avoid HACK memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk], CD_FRAMESIZE_RAW); return CD_FRAMESIZE_RAW; } #ifdef HAVE_CHD static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector) { int hunk; if (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) { chd_read(chd_img->chd, hunk, chd_img->buffer); chd_img->current_hunk = hunk; } if (dest != cdbuffer) // copy avoid HACK memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk], CD_FRAMESIZE_RAW); return CD_FRAMESIZE_RAW; } #endif static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector) { int ret; fseek(f, base + sector * 2048, SEEK_SET); ret = fread((char *)dest + 12 * 2, 1, 2048, f); // not really necessary, fake mode 2 header memset(cdbuffer, 0, 12 * 2); sec2msf(sector + 2 * 75, (char *)&cdbuffer[12]); cdbuffer[12 + 3] = 1; return ret; } #ifndef _WIN32 static int cdread_async(FILE *f, unsigned int base, void *dest, int sector) { boolean found = FALSE; int i = sector % SECTOR_BUFFER_SIZE; long ret; if (f != cdHandle || base != 0 || dest != cdbuffer) { // Async reads are only supported for cdbuffer, so call the sync // function directly. return sync_cdimg_read_func(f, base, dest, sector); } pthread_mutex_lock(&read_thread_msg_lock); // Only wait if we're not trying to read the next sector and // sector_start is set (meaning the last request hasn't been // processed yet) while(read_thread_sector_start != -1 && read_thread_sector_end + 1 != sector) { pthread_cond_wait(&read_thread_msg_done, &read_thread_msg_lock); } if (read_thread_sector_start == -1) read_thread_sector_start = sector; read_thread_sector_end = sector; pthread_cond_signal(&read_thread_msg_avail); pthread_mutex_unlock(&read_thread_msg_lock); do { pthread_mutex_lock(§orbuffer_lock); if (sectorbuffer[i].sector == sector) { sectorbuffer_index = i; ret = sectorbuffer[i].ret; found = TRUE; } if (!found) { pthread_cond_wait(§orbuffer_cond, §orbuffer_lock); } pthread_mutex_unlock(§orbuffer_lock); } while (!found); return ret; } #endif static unsigned char * CALLBACK ISOgetBuffer_compr(void) { return compr_img->buff_raw[compr_img->sector_in_blk] + 12; } #ifdef HAVE_CHD static unsigned char * CALLBACK ISOgetBuffer_chd(void) { return chd_img->buffer[chd_img->sector_in_hunk] + 12; } #endif #ifndef _WIN32 static unsigned char * CALLBACK ISOgetBuffer_async(void) { unsigned char *buffer; pthread_mutex_lock(§orbuffer_lock); buffer = sectorbuffer[sectorbuffer_index].data; pthread_mutex_unlock(§orbuffer_lock); return buffer + 12; } #endif static unsigned char * CALLBACK ISOgetBuffer(void) { return cdbuffer + 12; } static void PrintTracks(void) { int i; for (i = 1; i <= numtracks; i++) { SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"), i, (ti[i].type == DATA ? "DATA" : "AUDIO"), ti[i].start[0], ti[i].start[1], ti[i].start[2], ti[i].length[0], ti[i].length[1], ti[i].length[2]); } } // This function is invoked by the front-end when opening an ISO // file for playback static long CALLBACK ISOopen(void) { boolean isMode1ISO = FALSE; char alt_bin_filename[MAXPATHLEN]; const char *bin_filename; char image_str[1024] = {0}; if (cdHandle != NULL) { return 0; // it's already open } cdHandle = fopen(GetIsoFile(), "rb"); if (cdHandle == NULL) { SysPrintf(_("Could't open '%s' for reading: %s\n"), GetIsoFile(), strerror(errno)); return -1; } sprintf(image_str, "Loaded CD Image: %s", GetIsoFile()); cddaBigEndian = FALSE; subChanMixed = FALSE; subChanRaw = FALSE; pregapOffset = 0; cdrIsoMultidiskCount = 1; multifile = 0; CDR_getBuffer = ISOgetBuffer; cdimg_read_func = cdread_normal; if (parsetoc(GetIsoFile()) == 0) { strcat(image_str, "[+toc]"); } else if (parseccd(GetIsoFile()) == 0) { strcat(image_str, "[+ccd]"); } else if (parsemds(GetIsoFile()) == 0) { strcat(image_str, "[+mds]"); } else if (parsecue(GetIsoFile()) == 0) { strcat(image_str, "[+cue]"); } if (handlepbp(GetIsoFile()) == 0) { strcat(image_str, "[+pbp]"); CDR_getBuffer = ISOgetBuffer_compr; cdimg_read_func = cdread_compressed; } else if (handlecbin(GetIsoFile()) == 0) { strcat(image_str, "[+cbin]"); CDR_getBuffer = ISOgetBuffer_compr; cdimg_read_func = cdread_compressed; } #ifdef HAVE_CHD else if (handlechd(GetIsoFile()) == 0) { strcat(image_str, "[+chd]"); CDR_getBuffer = ISOgetBuffer_chd; cdimg_read_func = cdread_chd; } #endif if (!subChanMixed && opensubfile(GetIsoFile()) == 0) { strcat(image_str, "[+sub]"); } if (opensbifile(GetIsoFile()) == 0) { strcat(image_str, "[+sbi]"); } fseeko(cdHandle, 0, SEEK_END); // maybe user selected metadata file instead of main .bin .. bin_filename = GetIsoFile(); if (ftello(cdHandle) < 2352 * 0x10) { static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" }; FILE *tmpf = NULL; size_t i; char *p; strncpy(alt_bin_filename, bin_filename, sizeof(alt_bin_filename)); alt_bin_filename[MAXPATHLEN - 1] = '\0'; if (strlen(alt_bin_filename) >= 4) { p = alt_bin_filename + strlen(alt_bin_filename) - 4; for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) { strcpy(p, exts[i]); tmpf = fopen(alt_bin_filename, "rb"); if (tmpf != NULL) break; } } if (tmpf != NULL) { bin_filename = alt_bin_filename; fclose(cdHandle); cdHandle = tmpf; fseeko(cdHandle, 0, SEEK_END); } } // guess whether it is mode1/2048 if (ftello(cdHandle) % 2048 == 0) { unsigned int modeTest = 0; fseek(cdHandle, 0, SEEK_SET); fread(&modeTest, 4, 1, cdHandle); if (SWAP32(modeTest) != 0xffffff00) { strcat(image_str, "[2048]"); isMode1ISO = TRUE; } } fseek(cdHandle, 0, SEEK_SET); SysPrintf("%s.\n", image_str); PrintTracks(); if (subChanMixed) cdimg_read_func = cdread_sub_mixed; else if (isMode1ISO) cdimg_read_func = cdread_2048; // make sure we have another handle open for cdda if (numtracks > 1 && ti[1].handle == NULL) { ti[1].handle = fopen(bin_filename, "rb"); } cdda_cur_sector = 0; cdda_file_offset = 0; if (Config.AsyncCD) { readThreadStart(); } return 0; } static long CALLBACK ISOclose(void) { int i; if (cdHandle != NULL) { fclose(cdHandle); cdHandle = NULL; } if (subHandle != NULL) { fclose(subHandle); subHandle = NULL; } stopCDDA(); cddaHandle = NULL; if (compr_img != NULL) { free(compr_img->index_table); free(compr_img); compr_img = NULL; } #ifdef HAVE_CHD if (chd_img != NULL) { chd_close(chd_img->chd); free(chd_img->buffer); free(chd_img); chd_img = NULL; } #endif for (i = 1; i <= numtracks; i++) { if (ti[i].handle != NULL) { fclose(ti[i].handle); ti[i].handle = NULL; } } numtracks = 0; ti[1].type = 0; UnloadSBI(); memset(cdbuffer, 0, sizeof(cdbuffer)); CDR_getBuffer = ISOgetBuffer; if (Config.AsyncCD) { readThreadStop(); } return 0; } static long CALLBACK ISOinit(void) { assert(cdHandle == NULL); assert(subHandle == NULL); return 0; // do nothing } static long CALLBACK ISOshutdown(void) { ISOclose(); return 0; } // return Starting and Ending Track // buffer: // byte 0 - start track // byte 1 - end track static long CALLBACK ISOgetTN(unsigned char *buffer) { buffer[0] = 1; if (numtracks > 0) { buffer[1] = numtracks; } else { buffer[1] = 1; } return 0; } // return Track Time // buffer: // byte 0 - frame // byte 1 - second // byte 2 - minute static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) { if (track == 0) { unsigned int sect; unsigned char time[3]; sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length); sec2msf(sect, (char *)time); buffer[2] = time[0]; buffer[1] = time[1]; buffer[0] = time[2]; } else if (numtracks > 0 && track <= numtracks) { buffer[2] = ti[track].start[0]; buffer[1] = ti[track].start[1]; buffer[0] = ti[track].start[2]; } else { buffer[2] = 0; buffer[1] = 2; buffer[0] = 0; } return 0; } // decode 'raw' subchannel data ripped by cdrdao static void DecodeRawSubData(void) { unsigned char subQData[12]; int i; memset(subQData, 0, sizeof(subQData)); for (i = 0; i < 8 * 12; i++) { if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed subQData[i >> 3] |= (1 << (7 - (i & 7))); } } memcpy(&subbuffer[12], subQData, 12); } // read track // time: byte 0 - minute; byte 1 - second; byte 2 - frame // uses bcd format static long CALLBACK ISOreadTrack(unsigned char *time) { int sector = MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])); long ret; if (cdHandle == NULL) { return -1; } if (pregapOffset) { subChanMissing = FALSE; if (sector >= pregapOffset) { sector -= 2 * 75; if (sector < pregapOffset) subChanMissing = TRUE; } } ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector); if (ret < 0) return -1; if (subHandle != NULL) { fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET); fread(subbuffer, 1, SUB_FRAMESIZE, subHandle); if (subChanRaw) DecodeRawSubData(); } return 0; } // plays cdda audio // sector: byte 0 - minute; byte 1 - second; byte 2 - frame // does NOT uses bcd format static long CALLBACK ISOplay(unsigned char *time) { unsigned int i; if (numtracks <= 1) return 0; // find the track cdda_cur_sector = msf2sec((char *)time); for (i = numtracks; i > 1; i--) { cdda_first_sector = msf2sec(ti[i].start); if (cdda_first_sector <= cdda_cur_sector + 2 * 75) break; } cdda_file_offset = ti[i].start_offset; // find the file that contains this track for (; i > 1; i--) if (ti[i].handle != NULL) break; cddaHandle = ti[i].handle; if (SPU_playCDDAchannel != NULL) startCDDA(); return 0; } // stops cdda audio static long CALLBACK ISOstop(void) { stopCDDA(); return 0; } // gets subchannel data static unsigned char* CALLBACK ISOgetBufferSub(void) { if ((subHandle != NULL || subChanMixed) && !subChanMissing) { return subbuffer; } return NULL; } static long CALLBACK ISOgetStatus(struct CdrStat *stat) { u32 sect; CDR__getStatus(stat); if (playing) { stat->Type = 0x02; stat->Status |= 0x80; } else { // BIOS - boot ID (CD type) stat->Type = ti[1].type; } // relative -> absolute time sect = cddaCurPos; sec2msf(sect, (char *)stat->Time); return 0; } // read CDDA sector into buffer long CALLBACK ISOreadCDDA(unsigned char m, unsigned char s, unsigned char f, unsigned char *buffer) { unsigned char msf[3] = {m, s, f}; unsigned int file, track, track_start = 0; int ret; cddaCurPos = msf2sec((char *)msf); // find current track index for (track = numtracks; ; track--) { track_start = msf2sec(ti[track].start); if (track_start <= cddaCurPos) break; if (track == 1) break; } // data tracks play silent if (ti[track].type != CDDA) { memset(buffer, 0, CD_FRAMESIZE_RAW); return 0; } file = 1; if (multifile) { // find the file that contains this track for (file = track; file > 1; file--) if (ti[file].handle != NULL) break; } ret = cdimg_read_func(ti[file].handle, ti[track].start_offset, buffer, cddaCurPos - track_start); if (ret != CD_FRAMESIZE_RAW) { memset(buffer, 0, CD_FRAMESIZE_RAW); return -1; } if (cddaBigEndian) { int i; unsigned char tmp; for (i = 0; i < CD_FRAMESIZE_RAW / 2; i++) { tmp = buffer[i * 2]; buffer[i * 2] = buffer[i * 2 + 1]; buffer[i * 2 + 1] = tmp; } } return 0; } void cdrIsoInit(void) { CDR_init = ISOinit; CDR_shutdown = ISOshutdown; CDR_open = ISOopen; CDR_close = ISOclose; CDR_getTN = ISOgetTN; CDR_getTD = ISOgetTD; CDR_readTrack = ISOreadTrack; CDR_getBuffer = ISOgetBuffer; CDR_play = ISOplay; CDR_stop = ISOstop; CDR_getBufferSub = ISOgetBufferSub; CDR_getStatus = ISOgetStatus; CDR_readCDDA = ISOreadCDDA; CDR_getDriveLetter = CDR__getDriveLetter; CDR_configure = CDR__configure; CDR_test = CDR__test; CDR_about = CDR__about; CDR_setfilename = CDR__setfilename; numtracks = 0; } int cdrIsoActive(void) { return (cdHandle != NULL); }