cdriso: look for data files if other one is selected
[pcsx_rearmed.git] / libpcsxcore / cdriso.c
index 289e3cf..9ca4172 100644 (file)
@@ -1,6 +1,7 @@
 /***************************************************************************
  *   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  *
@@ -15,7 +16,7 @@
  *   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 02111-1307 USA.           *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  ***************************************************************************/
 
 #include "psxcommon.h"
@@ -27,6 +28,7 @@
 #ifdef _WIN32
 #include <process.h>
 #include <windows.h>
+#define strcasecmp _stricmp
 #else
 #include <pthread.h>
 #include <sys/time.h>
@@ -45,6 +47,8 @@ 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];
 
@@ -60,17 +64,18 @@ static pthread_t threadid;
 static unsigned int initial_offset = 0;
 static boolean playing = FALSE;
 static boolean cddaBigEndian = FALSE;
-// offsets of cddaHandle file
+// cdda sectors in toc, byte offset in file
 static unsigned int cdda_cur_sector;
 static unsigned int cdda_first_sector;
-// toc_sector - file_sector
-static unsigned int cdda_toc_delta;
+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];
@@ -82,7 +87,7 @@ static struct {
        unsigned int sector_in_blk;
 } *compr_img;
 
-int (*cdimg_read_func)(FILE *f, void *dest, int sector);
+int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector);
 
 char* CALLBACK CDR__getDriveLetter(void);
 long CALLBACK CDR__configure(void);
@@ -93,14 +98,12 @@ long CALLBACK CDR__getStatus(struct CdrStat *stat);
 
 static void DecodeRawSubData(void);
 
-extern void *hCDRDriver;
-
 struct trackinfo {
-       enum {DATA, CDDA} type;
+       enum {DATA=1, CDDA} type;
        char start[3];          // MSF-format
        char length[3];         // MSF-format
        FILE *handle;           // for multi-track images CDDA
-       int start_offset;       // sector offset from start of above file
+       unsigned int start_offset; // byte offset from start of above file
 };
 
 #define MAXTRACKS 100 /* How many tracks can a CD hold? */
@@ -174,19 +177,24 @@ static void *playthread(void *param)
 {
        long osleep, d, t, i, s;
        unsigned char   tmp;
-       int ret = 0;
+       int ret = 0, sector_offs;
 
        t = GetTickCount();
 
        while (playing) {
                s = 0;
                for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) {
-                       d = cdimg_read_func(cddaHandle, sndbuffer + s, cdda_cur_sector);
-                       if (d < CD_FRAMESIZE_RAW)
-                               break;
-
-                       if (cdda_cur_sector < cdda_first_sector)
-                               memset(sndbuffer + s, 0, CD_FRAMESIZE_RAW);
+                       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++;
@@ -207,6 +215,8 @@ static void *playthread(void *param)
                                }
                        }
 
+                       // can't do it yet due to readahead..
+                       //cdrAttenuate((short *)sndbuffer, s / 4, 1);
                        do {
                                ret = SPU_playCDDAchannel((short *)sndbuffer, s);
                                if (ret == 0x7761)
@@ -263,12 +273,11 @@ static void stopCDDA() {
 }
 
 // start the CDDA playback
-static void startCDDA(unsigned int sector) {
+static void startCDDA(void) {
        if (playing) {
                stopCDDA();
        }
 
-       cdda_cur_sector = sector;
        playing = TRUE;
 
 #ifdef _WIN32
@@ -283,10 +292,11 @@ static void startCDDA(unsigned int sector) {
 static int parsetoc(const char *isofile) {
        char                    tocname[MAXPATHLEN];
        FILE                    *fi;
-       char                    linebuf[256], dummy[256], name[256];
+       char                    linebuf[256], tmp[256], name[256];
        char                    *token;
        char                    time[20], time2[20];
-       unsigned int    t, sector_offs;
+       unsigned int    t, sector_offs, sector_size;
+       unsigned int    current_zero_gap = 0;
 
        numtracks = 0;
 
@@ -317,22 +327,34 @@ static int parsetoc(const char *isofile) {
                                return -1;
                        }
                }
+               // check if it's really a TOC named as a .cue
+               fgets(linebuf, sizeof(linebuf), fi);
+               token = strtok(tmp, " ");
+               if (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(dummy, linebuf, sizeof(linebuf));
-               token = strtok(dummy, " ");
+               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++;
@@ -343,9 +365,11 @@ static int parsetoc(const char *isofile) {
 
                                // check if this image contains mixed subchannel data
                                token = strtok(NULL, " ");
-                               if (token != NULL && !strncmp(token, "RW_RAW", 6)) {
+                               if (token != NULL && !strncmp(token, "RW", 2)) {
+                                       sector_size = CD_FRAMESIZE_RAW + SUB_FRAMESIZE;
                                        subChanMixed = TRUE;
-                                       subChanRaw = TRUE;
+                                       if (!strncmp(token, "RW_RAW", 6))
+                                               subChanRaw = TRUE;
                                }
                        }
                        else if (!strncmp(token, "AUDIO", 5)) {
@@ -355,9 +379,8 @@ static int parsetoc(const char *isofile) {
                else if (!strcmp(token, "DATAFILE")) {
                        if (ti[numtracks].type == CDDA) {
                                sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2);
-                               t /= CD_FRAMESIZE_RAW + (subChanMixed ? SUB_FRAMESIZE : 0);
                                ti[numtracks].start_offset = t;
-                               t += sector_offs;
+                               t = t / sector_size + sector_offs;
                                sec2msf(t, (char *)&ti[numtracks].start);
                                tok2msf((char *)&time2, (char *)&ti[numtracks].length);
                        }
@@ -369,21 +392,39 @@ static int parsetoc(const char *isofile) {
                else if (!strcmp(token, "FILE")) {
                        sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2);
                        tok2msf((char *)&time, (char *)&ti[numtracks].start);
-                       t /= CD_FRAMESIZE_RAW + (subChanMixed ? SUB_FRAMESIZE : 0);
+                       t += msf2sec(ti[numtracks].start) * sector_size;
                        ti[numtracks].start_offset = t;
-                       t += msf2sec(ti[numtracks].start) + sector_offs;
+                       t = t / sector_size + sector_offs;
                        sec2msf(t, (char *)&ti[numtracks].start);
                        tok2msf((char *)&time2, (char *)&ti[numtracks].length);
                }
-               else if (!strcmp(token, "ZERO")) {
-                       sscanf(linebuf, "ZERO AUDIO RW_RAW %8s", time);
-                       tok2msf((char *)&time, dummy);
-                       sector_offs += msf2sec(dummy);
+               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);
@@ -403,7 +444,8 @@ static int parsecue(const char *isofile) {
        char                    *tmp;
        char                    linebuf[256], tmpb[256], dummy[256];
        unsigned int    incue_max_len;
-       unsigned int    t, file_len, sector_offs;
+       unsigned int    t, file_len, mode, sector_offs;
+       unsigned int    sector_size = 2352;
 
        numtracks = 0;
 
@@ -436,10 +478,12 @@ static int parsecue(const char *isofile) {
 
        // build a path for files referenced in .cue
        strncpy(filepath, cuename, sizeof(filepath));
-       tmp = strrchr(filepath, '/') + 1;
-       if (tmp == NULL)
-               tmp = strrchr(filepath, '\\') + 1;
+       tmp = strrchr(filepath, '/');
        if (tmp == NULL)
+               tmp = strrchr(filepath, '\\');
+       if (tmp != NULL)
+               tmp++;
+       else
                tmp = filepath;
        *tmp = 0;
        filepath[sizeof(filepath) - 1] = 0;
@@ -462,24 +506,32 @@ static int parsecue(const char *isofile) {
                if (!strcmp(token, "TRACK")) {
                        numtracks++;
 
+                       sector_size = 0;
                        if (strstr(linebuf, "AUDIO") != NULL) {
                                ti[numtracks].type = CDDA;
+                               sector_size = 2352;
                        }
-                       else if (strstr(linebuf, "MODE1/2352") != NULL || strstr(linebuf, "MODE2/2352") != NULL) {
+                       else if (sscanf(linebuf, " TRACK %u MODE%u/%u", &t, &mode, &sector_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")) {
-                       sscanf(linebuf, " INDEX %02d %8s", &t, time);
+                       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;
+                       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;
+                       t = file_len - ti[numtracks].start_offset / sector_size;
                        sec2msf(t, ti[numtracks].length);
 
                        if (numtracks > 1 && ti[numtracks].handle == NULL) {
@@ -489,7 +541,7 @@ static int parsecue(const char *isofile) {
                                sec2msf(t, ti[numtracks - 1].length);
                        }
                        if (numtracks > 1 && pregapOffset == -1)
-                               pregapOffset = ti[numtracks].start_offset;
+                               pregapOffset = ti[numtracks].start_offset / sector_size;
                }
                else if (!strcmp(token, "PREGAP")) {
                        if (sscanf(linebuf, " PREGAP %8s", time) == 1) {
@@ -519,8 +571,10 @@ static int parsecue(const char *isofile) {
                        }
 
                        // update global offset if this is not first file in this .cue
-                       if (numtracks + 1 > 1)
+                       if (numtracks + 1 > 1) {
+                               multifile = 1;
                                sector_offs += file_len;
+                       }
 
                        file_len = 0;
                        if (ti[numtracks + 1].handle == NULL) {
@@ -582,7 +636,7 @@ static int parseccd(const char *isofile) {
                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;
+                       ti[numtracks].start_offset = t * 2352;
 
                        // If we've already seen another track, this is its end
                        if (numtracks > 1) {
@@ -667,7 +721,7 @@ static int parsemds(const char *isofile) {
 
        // check if the image contains mixed subchannel data
        fseek(fi, offset + 1, SEEK_SET);
-       subChanMixed = (fgetc(fi) ? TRUE : FALSE);
+       subChanMixed = subChanRaw = (fgetc(fi) ? TRUE : FALSE);
 
        // read track data
        for (i = 1; i <= numtracks; i++) {
@@ -689,14 +743,14 @@ static int parsemds(const char *isofile) {
                fseek(fi, offset + 0x28, SEEK_SET);
                fread(&l, 1, sizeof(unsigned int), fi);
                l = SWAP32(l);
-               ti[i].start_offset = l / CD_FRAMESIZE_RAW;
+               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 = ti[i].start_offset;
+                       pregapOffset = msf2sec(ti[i].start);
 
                // get the track length
                fread(&l, 1, sizeof(unsigned int), fi);
@@ -823,6 +877,7 @@ static int handlepbp(const char *isofile) {
 
                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]);
@@ -832,7 +887,7 @@ static int handlepbp(const char *isofile) {
                        sec2msf(t, ti[i - 1].length);
                }
        }
-       t = cd_length - ti[numtracks].start_offset;
+       t = cd_length - ti[numtracks].start_offset / 2352;
        sec2msf(t, ti[numtracks].length);
 
        // seek to ISO index
@@ -1001,17 +1056,17 @@ static int opensbifile(const char *isoname) {
        return LoadSBI(sbiname, s);
 }
 
-static int cdread_normal(FILE *f, void *dest, int sector)
+static int cdread_normal(FILE *f, unsigned int base, void *dest, int sector)
 {
-       fseek(f, sector * CD_FRAMESIZE_RAW, SEEK_SET);
+       fseek(f, base + sector * CD_FRAMESIZE_RAW, SEEK_SET);
        return fread(dest, 1, CD_FRAMESIZE_RAW, f);
 }
 
-static int cdread_sub_mixed(FILE *f, void *dest, int sector)
+static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)
 {
        int ret;
 
-       fseek(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE), SEEK_SET);
+       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);
 
@@ -1051,13 +1106,16 @@ static int uncompress2(void *out, unsigned long *out_size, void *in, unsigned lo
        return ret == 1 ? 0 : ret;
 }
 
-static int cdread_compressed(FILE *f, void *dest, int sector)
+static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)
 {
        unsigned long cdbuffer_size, cdbuffer_size_expect;
        unsigned int start_byte, size;
        int is_compressed;
        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);
 
@@ -1117,11 +1175,11 @@ finish:
        return CD_FRAMESIZE_RAW;
 }
 
-static int cdread_2048(FILE *f, void *dest, int sector)
+static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector)
 {
        int ret;
 
-       fseek(f, sector * 2048, SEEK_SET);
+       fseek(f, base + sector * 2048, SEEK_SET);
        ret = fread((char *)dest + 12 * 2, 1, 2048, f);
 
        // not really necessary, fake mode 2 header
@@ -1172,14 +1230,12 @@ static long CALLBACK ISOopen(void) {
        subChanRaw = FALSE;
        pregapOffset = 0;
        cdrIsoMultidiskCount = 1;
+       multifile = 0;
 
        CDR_getBuffer = ISOgetBuffer;
        cdimg_read_func = cdread_normal;
 
-       if (parsecue(GetIsoFile()) == 0) {
-               SysPrintf("[+cue]");
-       }
-       else if (parsetoc(GetIsoFile()) == 0) {
+       if (parsetoc(GetIsoFile()) == 0) {
                SysPrintf("[+toc]");
        }
        else if (parseccd(GetIsoFile()) == 0) {
@@ -1188,6 +1244,9 @@ static long CALLBACK ISOopen(void) {
        else if (parsemds(GetIsoFile()) == 0) {
                SysPrintf("[+mds]");
        }
+       else if (parsecue(GetIsoFile()) == 0) {
+               SysPrintf("[+cue]");
+       }
        if (handlepbp(GetIsoFile()) == 0) {
                SysPrintf("[pbp]");
                CDR_getBuffer = ISOgetBuffer_compr;
@@ -1206,8 +1265,33 @@ static long CALLBACK ISOopen(void) {
                SysPrintf("[+sbi]");
        }
 
-       // guess whether it is mode1/2048
        fseek(cdHandle, 0, SEEK_END);
+
+       // maybe user selected metadata file instead of main .bin ..
+       if (ftell(cdHandle) < 2352 * 0x10) {
+               static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
+               char tmp[MAXPATHLEN], *p;
+               FILE *tmpf;
+               size_t i;
+
+               strncpy(tmp, GetIsoFile(), sizeof(tmp));
+               tmp[MAXPATHLEN - 1] = '\0';
+               if (strlen(tmp) >= 4) {
+                       p = tmp + strlen(tmp) - 4;
+                       for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
+                               strcpy(p, exts[i]);
+                               tmpf = fopen(tmp, "rb");
+                               if (tmpf != NULL) {
+                                       fclose(cdHandle);
+                                       cdHandle = tmpf;
+                                       fseek(cdHandle, 0, SEEK_END);
+                                       break;
+                               }
+                       }
+               }
+       }
+
+       // guess whether it is mode1/2048
        if (ftell(cdHandle) % 2048 == 0) {
                unsigned int modeTest = 0;
                fseek(cdHandle, 0, SEEK_SET);
@@ -1232,7 +1316,8 @@ static long CALLBACK ISOopen(void) {
        if (numtracks > 1 && ti[1].handle == NULL) {
                ti[1].handle = fopen(GetIsoFile(), "rb");
        }
-       cdda_cur_sector = cdda_toc_delta = 0;
+       cdda_cur_sector = 0;
+       cdda_file_offset = 0;
 
        return 0;
 }
@@ -1264,8 +1349,12 @@ static long CALLBACK ISOclose(void) {
                }
        }
        numtracks = 0;
+       ti[1].type = 0;
        UnloadSBI();
 
+       memset(cdbuffer, 0, sizeof(cdbuffer));
+       CDR_getBuffer = ISOgetBuffer;
+
        return 0;
 }
 
@@ -1305,7 +1394,6 @@ static long CALLBACK ISOgetTN(unsigned char *buffer) {
 //  byte 2 - minute
 static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) {
        if (track == 0) {
-               // CD length according pcsxr-svn (done a bit different here)
                unsigned int sect;
                unsigned char time[3];
                sect = msf2sec(ti[numtracks].start) + msf2sec(ti[numtracks].length);
@@ -1349,6 +1437,7 @@ static void DecodeRawSubData(void) {
 // 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;
@@ -1363,7 +1452,9 @@ static long CALLBACK ISOreadTrack(unsigned char *time) {
                }
        }
 
-       cdimg_read_func(cdHandle, cdbuffer, sector);
+       ret = cdimg_read_func(cdHandle, 0, cdbuffer, sector);
+       if (ret < 0)
+               return -1;
 
        if (subHandle != NULL) {
                fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET);
@@ -1379,40 +1470,30 @@ static long CALLBACK ISOreadTrack(unsigned char *time) {
 // 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, abs_sect, start_sect = 0;
-       int track_offset, file_sect;
+       unsigned int i;
 
        if (numtracks <= 1)
                return 0;
 
        // find the track
-       abs_sect = msf2sec((char *)time);
+       cdda_cur_sector = msf2sec((char *)time);
        for (i = numtracks; i > 1; i--) {
-               start_sect = msf2sec(ti[i].start);
-               if (start_sect <= abs_sect + 2 * 75)
+               cdda_first_sector = msf2sec(ti[i].start);
+               if (cdda_first_sector <= cdda_cur_sector + 2 * 75)
                        break;
        }
-
-       track_offset = abs_sect - start_sect;
-       file_sect = ti[i].start_offset + track_offset;
-       if (file_sect < 0)
-               file_sect = 0;
+       cdda_file_offset = ti[i].start_offset;
 
        // find the file that contains this track
        for (; i > 1; i--)
                if (ti[i].handle != NULL)
                        break;
 
-       cdda_first_sector = 0;
-       if (i == 1)
-               cdda_first_sector = file_sect - track_offset;
-
-       cdda_toc_delta = abs_sect - file_sect;
        cddaHandle = ti[i].handle;
 
-       if (SPU_playCDDAchannel != NULL) {
-               startCDDA(file_sect);
-       }
+       if (SPU_playCDDAchannel != NULL)
+               startCDDA();
+
        return 0;
 }
 
@@ -1432,20 +1513,74 @@ static unsigned char* CALLBACK ISOgetBufferSub(void) {
 }
 
 static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
-       int sec;
-
+       u32 sect;
+       
        CDR__getStatus(stat);
-
+       
        if (playing) {
                stat->Type = 0x02;
                stat->Status |= 0x80;
        }
        else {
-               stat->Type = 0x01;
+               // 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;
        }
 
-       sec = cdda_cur_sector + cdda_toc_delta;
-       sec2msf(sec, (char *)stat->Time);
+       // 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;
 }
@@ -1463,6 +1598,7 @@ void cdrIsoInit(void) {
        CDR_stop = ISOstop;
        CDR_getBufferSub = ISOgetBufferSub;
        CDR_getStatus = ISOgetStatus;
+       CDR_readCDDA = ISOreadCDDA;
 
        CDR_getDriveLetter = CDR__getDriveLetter;
        CDR_configure = CDR__configure;