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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 "psxcommon.h"
#include "plugins.h"
#include "cdrom.h"
#include "cdriso.h"
#include "ppf.h"
#include <errno.h>
#include <zlib.h>
#ifdef HAVE_CHD
#include <chd.h>
#endif
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <process.h>
#include <windows.h>
#define strcasecmp _stricmp
#define usleep(x) (Sleep((x) / 1000))
#else
#include <pthread.h>
#include <sys/time.h>
#include <unistd.h>
#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<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;
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);
}
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