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cdriso.c
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/***************************************************************************
* 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 <assert.h>
#include "psxcommon.h"
#include "plugins.h"
#include "cdrom.h"
#include "cdriso.h"
#include "ppf.h"
#include <errno.h>
#include <zlib.h>
#ifdef USE_LIBCHDR
#include "deps/libchdr/include/libchdr/chd.h"
#endif // USE_LIBCHDR
#include <ogc/lwp.h>
#include <ogc/mutex.h>
#include <sys/time.h>
#include <unistd.h>
#include "Gamecube/DEBUG.h"
#define OFF_T_MSB ((off_t)1 << (sizeof(off_t) * 8 - 1))
unsigned int cdrIsoMultidiskCount;
unsigned int cdrIsoMultidiskSelect;
static FILE *cdHandle = NULL;
static FILE *subHandle = NULL;
static bool subChanMixed = FALSE;
static bool subChanRaw = FALSE;
static bool multifile = FALSE;
static unsigned char cdbuffer[CD_FRAMESIZE_RAW];
static unsigned char subbuffer[SUB_FRAMESIZE];
static bool cddaBigEndian = TRUE;
/* 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;
// 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 USE_LIBCHDR
static struct {
unsigned char *buffer;
chd_file* chd;
const chd_header* header;
unsigned int sectors_per_hunk;
unsigned int current_hunk[2];
unsigned int current_buffer;
unsigned int sector_in_hunk;
} *chd_img;
#endif // USE_LIBCHDR
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);
long CALLBACK CDR__test(void);
void CALLBACK CDR__about(void);
long CALLBACK CDR__setfilename(char *filename);
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 (chd: sector offset)
};
#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 inline unsigned int msf2sec(char *msf) {
//return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
return msf2SectMNoItob[msf[0]] + msf2SectSNoItob[msf[1]] + msf[2];
}
static inline void sec2msf(unsigned int s, char *msf) {
msf[0] = s / 75 / 60;
//s = s - msf[0] * 75 * 60;
s = s - msf2SectMNoItob[msf[0]];
msf[1] = s / 75;
//s = s - msf[1] * 75;
s = s - msf2SectSNoItob[msf[1]];
msf[2] = s;
}
// divide a string of xx:yy:zz into m, s, f
static inline 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;
}
}
// Some c libs like newlib default buffering to just 1k which is less than
// cd sector size which is bad for performance.
// Note that NULL setvbuf() is implemented differently by different libs
// (newlib mallocs a buffer of given size and glibc ignores size and uses it's own).
static void set_static_stdio_buffer(FILE *f)
{
#if !defined(fopen) // no stdio redirect
static char buf[16 * 1024];
if (f) {
int r;
errno = 0;
r = setvbuf(f, buf, _IOFBF, sizeof(buf));
if (r)
SysPrintf("cdriso: setvbuf %d %d\n", r, errno);
}
#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
if (fgets(linebuf, sizeof(linebuf), fi) != NULL) {
token = strtok(linebuf, " ");
if (token && strncmp(token, "CD", 2) != 0) {
// && strcmp(token, "CATALOG") != 0) - valid for a real .cue
fclose(fi);
return -1;
}
}
fseek(fi, 0, SEEK_SET);
}
memset(&ti, 0, sizeof(ti));
cddaBigEndian = FALSE; // 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<X>' 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;
isoFile.size = 0;
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);
int trackFileSize = ftell(ti[numtracks + 1].handle);
isoFile.size += trackFileSize;
file_len = trackFileSize / 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");
set_static_stdio_buffer(cdHandle);
}
}
}
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
if (fread(&i, 1, sizeof(i), fi) != sizeof(i))
goto fail_io;
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);
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);
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);
if (fread(&offset, 1, sizeof(offset), fi) != sizeof(offset))
goto fail_io;
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);
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);
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);
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
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) {
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];
unsigned int psar_offs, index_entry_size, index_entry_offset;
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;
}
psar_offs = SWAP32(pbp_hdr.psar_offs);
ret = fseeko(cdHandle, psar_offs, SEEK_SET);
if (ret != 0) {
SysPrintf("failed to seek to %x\n", psar_offs);
goto fail_io;
}
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, psar_offs + 0x200, SEEK_SET);
if (ret != 0) {
SysPrintf("failed to seek to %x\n", 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 += SWAP32(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;
}
if (fread(psar_sig, 1, sizeof(psar_sig), cdHandle) != sizeof(psar_sig))
goto fail_io;
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);
if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
goto fail_io;
numtracks = btoi(toc_entry.index1[0]);
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++) {
if (fread(&toc_entry, 1, sizeof(toc_entry), cdHandle) != sizeof(toc_entry))
goto fail_io;
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;
}
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 + 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;
}
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 USE_LIBCHDR
static int handlechd(const char *isofile) {
int frame_offset = 150;
int file_offset = 0;
int is_chd_ext = 0;
chd_error err;
if (strlen(isofile) >= 3) {
const char *ext = isofile + strlen(isofile) - 3;
is_chd_ext = !strcasecmp(ext, "chd");
}
chd_img = calloc(1, sizeof(*chd_img));
if (chd_img == NULL)
goto fail_io;
err = chd_open_file(cdHandle, CHD_OPEN_READ, NULL, &chd_img->chd);
if (err != CHDERR_NONE) {
if (is_chd_ext)
SysPrintf("chd_open: %d\n", err);
goto fail_io;
}
chd_img->header = chd_get_header(chd_img->chd);
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[0] = (unsigned int)-1;
chd_img->current_hunk[1] = (unsigned int)-1;
cddaBigEndian = FALSE;
numtracks = 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 = {};