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/*
* Copyright (C) 2007-2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
/*
* faum_cd_to_iso - converts faum-cd-images to iso-images
*/
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <assert.h>
#include <getopt.h>
#include "../node-pc/simulator/cd_image.h"
const char * progname;
/* tell compiler we do not return */
static void
usage(int retval) __attribute__((__noreturn__));
static void
usage(int retval)
{
fprintf(stderr, "%s [OPTION]\n", progname);
fprintf(stderr, "Convert FAUmachine-CD-Image to ISO-9660-Images.\n\nOptions:\n"
"\t-name <imagename> Filename of the FAUmachine-CD-Image\n"
"\t-iso <iso-filename> Filename of the output-iso-image\n"
"\t-track <trackno> Number of the track (defaults to first track)\n"
#if 0
"\t-session <trackno> Number of the session (defaults to first session)\n"
#endif
);
exit(retval);
}
static void
msf_to_lba(uint8_t msf[3], int64_t *lba)
{
/* msf[0] = min; msf[1] = sec; msf[2] = frame */
if (msf[0] < 90) {
*lba = (msf[0] * 60 + msf[1]) * 75 + msf[2] - 150;
} else {
*lba = (msf[0] * 60 + msf[1]) * 75 + msf[2] - 450150;
}
}
int main(int argc, char ** argv)
{
int fd;
int srcfd;
int trackno = 0;
#if 0
int sessionno;
#endif
int ret;
cd_image media_desc;
toc_session toc;
mode1 cd_block;
int sizeoftrack = 0;
toc_entry *act_toc_line;
int64_t lead_in_size;
int option;
const char * filename = NULL;
const char * isoname = NULL;
struct option longopts[] = {
/* name, has_arg, flag, val */
{ "name", 1, NULL, 'n' },
{ "iso", 1, NULL, 'i' },
#if 0
{ "session", 1, NULL, 's' },
#endif
{ "track", 1, NULL, 't' },
{ NULL, 0, NULL, 0 }
};
progname = *argv;
if (argc == 1) {
fprintf(stderr, "need parameters!\n");
usage(EXIT_FAILURE);
}
while ((option = getopt_long_only(argc, argv, "", longopts, NULL)) != -1) {
switch(option) {
case 'n':
filename = optarg;
break;
case 'i':
isoname = optarg;
break;
#if 0
case 's':
sessionno = strtol(optarg, (char **)NULL, 10);
#endif
case 't':
trackno = strtol(optarg, (char **)NULL, 10);
if (99 < trackno) {
fprintf(stderr, "Max # of tracks is 99\n");
usage(EXIT_FAILURE);
}
break;
default:
usage(EXIT_FAILURE);
}
}
if ( ! filename ) {
fprintf(stderr, "No FAUM-CD-Image set\n");
usage(EXIT_FAILURE);
}
if ( ! isoname ) {
fprintf(stderr, "No ISO-Image set\n");
usage(EXIT_FAILURE);
}
if ( trackno == 0 ) {
fprintf(stderr, "No Trackno set\n");
usage(EXIT_FAILURE);
}
if (argc != optind) {
fprintf(stderr, "unknown parameter: %s\n", argv[optind]);
usage(EXIT_FAILURE);
}
srcfd = open(filename, O_RDONLY);
if (srcfd <= 0) {
fprintf(stderr, "opening filename %s failed: %s\n",
filename, strerror(errno));
exit(EXIT_FAILURE);
}
fd = creat(isoname, 0666);
if (fd <= 0) {
fprintf(stderr, "opening isoname %s failed: %s\n",
isoname, strerror(errno));
exit(EXIT_FAILURE);
}
ret = read(srcfd, &media_desc, sizeof(cd_image));
if (strncmp(media_desc.magic,"\211FAUM-CDIMAGE",13) != 0) {
fprintf(stderr, "no FAUM-CDimage\n");
fprintf(stderr, "magic: %s\n", media_desc.magic);
return 1;
}
/* set seek pointer to start of toc (after offset) */
lseek(srcfd, media_desc.offset, SEEK_SET);
ret = read(srcfd, &toc, sizeof(toc_session));
act_toc_line = &(toc.x01) + ( trackno - 1 );
sizeoftrack = act_toc_line->blkcount;
/* set seek pointer to start of data (after offset and lead-in) */
msf_to_lba((uint8_t *)&media_desc.start_of_leadin_m, &lead_in_size);
lseek(srcfd, media_desc.offset + media_desc.toc_size + (-1 * lead_in_size) + 150 * 2352, SEEK_SET);
while ( 0 < sizeoftrack ) {
size_t sz;
/* read 2352 byte from source and write 2048 to imagefile */
sz = read(srcfd, &cd_block, sizeof(cd_block));
assert(sz == sizeof(cd_block));
sz = write(fd, &cd_block.data, sizeof(cd_block.data));
assert(sz == sizeof(cd_block.data));
sizeoftrack--;
}
ret = close(fd);
assert(0 <= ret);
ret = close(srcfd);
assert(0 <= ret);
return 0;
}
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