/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)dvd_reader.c 1.3 04/03/04 joerg */
/*
* Copyright (C) 2001, 2002 Billy Biggs <vektor@dumbterm.net>,
* Håkan Hjort <d95hjort@dtek.chalmers.se>,
* Olaf Beck <olaf_sc@yahoo.com>
* (I only did the cut down no other contribs)
* Jörg Schilling <schilling@fokus.gmd.de>
* (making the code portable)
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* NOTE: This is a cut down version of libdvdread for genisoimage, due
* to portability issues with the current libdvdread according to
* the maintainer of genisoimage.
* This cut down version only reads from a harddisk file structure
* and it only implements the functions necessary inorder to make
* genisoimage produce valid DVD-Video images.
* DON'T USE THIS LIBRARY IN ANY OTHER PROGRAM GET THE REAL
* LIBDVDREAD INSTEAD
*/
#ifdef DVD_VIDEO
#include "genisoimage.h"
#include <fctldefs.h>
#include <schily.h>
#include "dvd_reader.h"
struct dvd_file_s {
/* Basic information. */
dvd_reader_t *dvd;
/* Calculated at open-time, size in blocks. */
ssize_t filesize;
};
void DVDCloseFile(dvd_file_t *dvd_file);
static dvd_file_t *DVDOpenFilePath(dvd_reader_t *dvd, char *filename);
static dvd_file_t *DVDOpenVOBPath(dvd_reader_t *dvd, int title, int menu);
dvd_file_t *DVDOpenFile(dvd_reader_t *dvd, int titlenum,
dvd_read_domain_t domain);
static dvd_reader_t *DVDOpenPath(const char *path_root);
dvd_reader_t *DVDOpen(const char *path);
void DVDClose(dvd_reader_t *dvd);
ssize_t DVDFileSize(dvd_file_t *dvd_file);
/*
* Free a DVD file
*/
void
DVDCloseFile(dvd_file_t *dvd_file)
{
free(dvd_file);
dvd_file = 0;
}
/*
* Stat a IFO or BUP file from a DVD directory tree.
*/
static dvd_file_t *
DVDOpenFilePath(dvd_reader_t *dvd, char *filename)
{
char full_path[PATH_MAX + 1];
dvd_file_t *dvd_file;
struct stat fileinfo;
/* Get the full path of the file. */
snprintf(full_path, sizeof (full_path),
"%s/%s", dvd->path_root, filename);
dvd_file = (dvd_file_t *) e_malloc(sizeof (dvd_file_t));
if (!dvd_file)
return (0);
dvd_file->dvd = dvd;
dvd_file->filesize = 0;
if (stat(full_path, &fileinfo) < 0) {
free(dvd_file);
return (0);
}
dvd_file->filesize = fileinfo.st_size / DVD_VIDEO_LB_LEN;
return (dvd_file);
}
/*
* Stat a VOB file from a DVD directory tree.
*/
static dvd_file_t *
DVDOpenVOBPath(dvd_reader_t *dvd, int title, int menu)
{
char filename[PATH_MAX + 1];
struct stat fileinfo;
dvd_file_t *dvd_file;
int i;
dvd_file = (dvd_file_t *) e_malloc(sizeof (dvd_file_t));
if (!dvd_file)
return (0);
dvd_file->dvd = dvd;
dvd_file->filesize = 0;
if (menu) {
if (title == 0) {
snprintf(filename, sizeof (filename),
"%s/VIDEO_TS/VIDEO_TS.VOB", dvd->path_root);
} else {
snprintf(filename, sizeof (filename),
"%s/VIDEO_TS/VTS_%02i_0.VOB", dvd->path_root, title);
}
if (stat(filename, &fileinfo) < 0) {
free(dvd_file);
return (0);
}
dvd_file->filesize = fileinfo.st_size / DVD_VIDEO_LB_LEN;
} else {
for (i = 0; i < 9; ++i) {
snprintf(filename, sizeof (filename),
"%s/VIDEO_TS/VTS_%02i_%i.VOB", dvd->path_root, title, i + 1);
if (stat(filename, &fileinfo) < 0) {
break;
}
dvd_file->filesize += fileinfo.st_size / DVD_VIDEO_LB_LEN;
}
}
return (dvd_file);
}
/*
* Stat a DVD file from a DVD directory tree
*/
EXPORT dvd_file_t *
DVDOpenFile(dvd_reader_t *dvd, int titlenum, dvd_read_domain_t domain)
{
char filename[MAX_UDF_FILE_NAME_LEN];
switch (domain) {
case DVD_READ_INFO_FILE:
if (titlenum == 0) {
snprintf(filename, sizeof (filename),
"/VIDEO_TS/VIDEO_TS.IFO");
} else {
snprintf(filename, sizeof (filename),
"/VIDEO_TS/VTS_%02i_0.IFO", titlenum);
}
break;
case DVD_READ_INFO_BACKUP_FILE:
if (titlenum == 0) {
snprintf(filename, sizeof (filename),
"/VIDEO_TS/VIDEO_TS.BUP");
} else {
snprintf(filename, sizeof (filename),
"/VIDEO_TS/VTS_%02i_0.BUP", titlenum);
}
break;
case DVD_READ_MENU_VOBS:
return (DVDOpenVOBPath(dvd, titlenum, 1));
case DVD_READ_TITLE_VOBS:
if (titlenum == 0)
return (0);
return (DVDOpenVOBPath(dvd, titlenum, 0));
default:
#ifdef USE_LIBSCHILY
errmsgno(EX_BAD, "Invalid domain for file open.\n");
#else
fprintf(stderr, "Invalid domain for file open.\n");
#endif
return (0);
}
return (DVDOpenFilePath(dvd, filename));
}
/*
* Stat a DVD directory structure
*/
static dvd_reader_t *
DVDOpenPath(const char *path_root)
{
dvd_reader_t *dvd;
dvd = (dvd_reader_t *) e_malloc(sizeof (dvd_reader_t));
if (!dvd)
return (0);
dvd->path_root = strdup(path_root);
return (dvd);
}
/*
* Stat a DVD structure - this one only works with directory structures
*/
dvd_reader_t *
DVDOpen(const char *path)
{
struct stat fileinfo;
int ret;
if (!path)
return (0);
ret = stat(path, &fileinfo);
if (ret < 0) {
/* If we can't stat the file, give up */
#ifdef USE_LIBSCHILY
errmsg("Can't stat %s\n", path);
#else
fprintf(stderr, "Can't stat %s\n", path);
perror("");
#endif
return (0);
}
if (S_ISDIR(fileinfo.st_mode)) {
return (DVDOpenPath(path));
}
/* If it's none of the above, screw it. */
#ifdef USE_LIBSCHILY
errmsgno(EX_BAD, "Could not open %s\n", path);
#else
fprintf(stderr, "Could not open %s\n", path);
#endif
return (0);
}
/*
* Free a DVD structure - this one will only close a directory tree
*/
void
DVDClose(dvd_reader_t *dvd)
{
if (dvd) {
if (dvd->path_root) free(dvd->path_root);
free(dvd);
dvd = 0;
}
}
/*
* Return the size of a DVD file
*/
ssize_t
DVDFileSize(dvd_file_t *dvd_file)
{
return (dvd_file->filesize);
}
#endif /* DVD_VIDEO */
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