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-rw-r--r--dvdread/dvd_reader.c1149
1 files changed, 1149 insertions, 0 deletions
diff --git a/dvdread/dvd_reader.c b/dvdread/dvd_reader.c
new file mode 100644
index 0000000000..d944696c15
--- /dev/null
+++ b/dvdread/dvd_reader.c
@@ -0,0 +1,1149 @@
+/*
+ * Copyright (C) 2001, 2002, 2003 Billy Biggs <vektor@dumbterm.net>,
+ * Håkan Hjort <d95hjort@dtek.chalmers.se>,
+ * Björn Englund <d4bjorn@dtek.chalmers.se>
+ *
+ * Modified for use with MPlayer, changes contained in libdvdread_changes.diff.
+ * detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
+ * $Id$
+ *
+ * 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, USA.
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h> /* For the timing of dvdcss_title crack. */
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+#include <dirent.h>
+
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__bsdi__)|| defined(__DARWIN__) || defined(__DragonFly__)
+#define SYS_BSD 1
+#endif
+
+#if defined(__sun)
+#include <sys/mnttab.h>
+#elif defined(hpux)
+#include </usr/conf/h/mnttab.h>
+#elif defined(SYS_BSD)
+#include <fstab.h>
+#elif defined(__linux__) || defined(__CYGWIN__)
+#include <mntent.h>
+#endif
+
+#if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION <= 3) && (__MINGW32_MINOR_VERSION < 10)
+#include <sys/timeb.h>
+static void gettimeofday(struct timeval* t,void* timezone){
+ struct timeb timebuffer;
+ ftime( &timebuffer );
+ t->tv_sec=timebuffer.time;
+ t->tv_usec=1000*timebuffer.millitm;
+}
+#endif
+
+#include "dvd_udf.h"
+#include "dvd_input.h"
+#include "dvd_reader.h"
+#include "md5.h"
+
+#define DEFAULT_UDF_CACHE_LEVEL 0
+
+struct dvd_reader_s {
+ /* Basic information. */
+ int isImageFile;
+
+ /* Hack for keeping track of the css status.
+ * 0: no css, 1: perhaps (need init of keys), 2: have done init */
+ int css_state;
+ int css_title; /* Last title that we have called dvdinpute_title for. */
+
+ /* Information required for an image file. */
+ dvd_input_t dev;
+
+ /* Information required for a directory path drive. */
+ char *path_root;
+
+ /* Filesystem cache */
+ int udfcache_level; /* 0 - turned off, 1 - on */
+ void *udfcache;
+};
+
+struct dvd_file_s {
+ /* Basic information. */
+ dvd_reader_t *dvd;
+
+ /* Hack for selecting the right css title. */
+ int css_title;
+
+ /* Information required for an image file. */
+ uint32_t lb_start;
+ uint32_t seek_pos;
+
+ /* Information required for a directory path drive. */
+ size_t title_sizes[ 9 ];
+ dvd_input_t title_devs[ 9 ];
+
+ /* Calculated at open-time, size in blocks. */
+ ssize_t filesize;
+};
+
+/**
+ * Set the level of caching on udf
+ * level = 0 (no caching)
+ * level = 1 (caching filesystem info)
+ */
+int DVDUDFCacheLevel(dvd_reader_t *device, int level)
+{
+ struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
+
+ if(level > 0) {
+ level = 1;
+ } else if(level < 0) {
+ return dev->udfcache_level;
+ }
+
+ dev->udfcache_level = level;
+
+ return level;
+}
+
+void *GetUDFCacheHandle(dvd_reader_t *device)
+{
+ struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
+
+ return dev->udfcache;
+}
+
+void SetUDFCacheHandle(dvd_reader_t *device, void *cache)
+{
+ struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
+
+ dev->udfcache = cache;
+}
+
+
+
+/* Loop over all titles and call dvdcss_title to crack the keys. */
+static int initAllCSSKeys( dvd_reader_t *dvd )
+{
+ struct timeval all_s, all_e;
+ struct timeval t_s, t_e;
+ char filename[ MAX_UDF_FILE_NAME_LEN ];
+ uint32_t start, len;
+ int title;
+
+ char *nokeys_str = getenv("DVDREAD_NOKEYS");
+ if(nokeys_str != NULL)
+ return 0;
+
+ fprintf( stderr, "\n" );
+ fprintf( stderr, "libdvdread: Attempting to retrieve all CSS keys\n" );
+ fprintf( stderr, "libdvdread: This can take a _long_ time, "
+ "please be patient\n\n" );
+
+ gettimeofday(&all_s, NULL);
+
+ for( title = 0; title < 100; title++ ) {
+ gettimeofday( &t_s, NULL );
+ if( title == 0 ) {
+ sprintf( filename, "/VIDEO_TS/VIDEO_TS.VOB" );
+ } else {
+ sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, 0 );
+ }
+ start = UDFFindFile( dvd, filename, &len );
+ if( start != 0 && len != 0 ) {
+ /* Perform CSS key cracking for this title. */
+ fprintf( stderr, "libdvdread: Get key for %s at 0x%08x\n",
+ filename, start );
+ if( dvdinput_title( dvd->dev, (int)start ) < 0 ) {
+ fprintf( stderr, "libdvdread: Error cracking CSS key for %s (0x%08x)\n", filename, start);
+ }
+ gettimeofday( &t_e, NULL );
+ fprintf( stderr, "libdvdread: Elapsed time %ld\n",
+ (long int) t_e.tv_sec - t_s.tv_sec );
+ }
+
+ if( title == 0 ) continue;
+
+ gettimeofday( &t_s, NULL );
+ sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, 1 );
+ start = UDFFindFile( dvd, filename, &len );
+ if( start == 0 || len == 0 ) break;
+
+ /* Perform CSS key cracking for this title. */
+ fprintf( stderr, "libdvdread: Get key for %s at 0x%08x\n",
+ filename, start );
+ if( dvdinput_title( dvd->dev, (int)start ) < 0 ) {
+ fprintf( stderr, "libdvdread: Error cracking CSS key for %s (0x%08x)!!\n", filename, start);
+ }
+ gettimeofday( &t_e, NULL );
+ fprintf( stderr, "libdvdread: Elapsed time %ld\n",
+ (long int) t_e.tv_sec - t_s.tv_sec );
+ }
+ title--;
+
+ fprintf( stderr, "libdvdread: Found %d VTS's\n", title );
+ gettimeofday(&all_e, NULL);
+ fprintf( stderr, "libdvdread: Elapsed time %ld\n",
+ (long int) all_e.tv_sec - all_s.tv_sec );
+
+ return 0;
+}
+
+
+
+/**
+ * Open a DVD image or block device file.
+ */
+static dvd_reader_t *DVDOpenImageFile( const char *location, int have_css )
+{
+ dvd_reader_t *dvd;
+ dvd_input_t dev;
+
+ dev = dvdinput_open( location );
+ if( !dev ) {
+ fprintf( stderr, "libdvdread: Can't open %s for reading\n", location );
+ return 0;
+ }
+
+ dvd = (dvd_reader_t *) malloc( sizeof( dvd_reader_t ) );
+ if( !dvd ) return 0;
+ dvd->isImageFile = 1;
+ dvd->dev = dev;
+ dvd->path_root = 0;
+
+ dvd->udfcache_level = DEFAULT_UDF_CACHE_LEVEL;
+ dvd->udfcache = NULL;
+
+ if( have_css ) {
+ /* Only if DVDCSS_METHOD = title, a bit if it's disc or if
+ * DVDCSS_METHOD = key but region missmatch. Unfortunaly we
+ * don't have that information. */
+
+ dvd->css_state = 1; /* Need key init. */
+ }
+ dvd->css_title = 0;
+
+ return dvd;
+}
+
+static dvd_reader_t *DVDOpenPath( const char *path_root )
+{
+ dvd_reader_t *dvd;
+
+ dvd = (dvd_reader_t *) malloc( sizeof( dvd_reader_t ) );
+ if( !dvd ) return 0;
+ dvd->isImageFile = 0;
+ dvd->dev = 0;
+ dvd->path_root = strdup( path_root );
+
+ dvd->udfcache_level = DEFAULT_UDF_CACHE_LEVEL;
+ dvd->udfcache = NULL;
+
+ dvd->css_state = 0; /* Only used in the UDF path */
+ dvd->css_title = 0; /* Only matters in the UDF path */
+
+ return dvd;
+}
+
+#if defined(__sun)
+/* /dev/rdsk/c0t6d0s0 (link to /devices/...)
+ /vol/dev/rdsk/c0t6d0/??
+ /vol/rdsk/<name> */
+static char *sun_block2char( const char *path )
+{
+ char *new_path;
+
+ /* Must contain "/dsk/" */
+ if( !strstr( path, "/dsk/" ) ) return (char *) strdup( path );
+
+ /* Replace "/dsk/" with "/rdsk/" */
+ new_path = malloc( strlen(path) + 2 );
+ strcpy( new_path, path );
+ strcpy( strstr( new_path, "/dsk/" ), "" );
+ strcat( new_path, "/rdsk/" );
+ strcat( new_path, strstr( path, "/dsk/" ) + strlen( "/dsk/" ) );
+
+ return new_path;
+}
+#endif
+
+#if defined(SYS_BSD)
+/* FreeBSD /dev/(r)(a)cd0c (a is for atapi), recomended to _not_ use r
+ OpenBSD /dev/rcd0c, it needs to be the raw device
+ NetBSD /dev/rcd0[d|c|..] d for x86, c (for non x86), perhaps others
+ Darwin /dev/rdisk0, it needs to be the raw device
+ BSD/OS /dev/sr0c (if not mounted) or /dev/rsr0c ('c' any letter will do) */
+static char *bsd_block2char( const char *path )
+#if defined(__FreeBSD__)
+{
+ return (char *) strdup( path );
+}
+#else
+{
+ char *new_path;
+
+ /* If it doesn't start with "/dev/" or does start with "/dev/r" exit */
+ if( strncmp( path, "/dev/", 5 ) || !strncmp( path, "/dev/r", 6 ) )
+ return (char *) strdup( path );
+
+ /* Replace "/dev/" with "/dev/r" */
+ new_path = malloc( strlen(path) + 2 );
+ strcpy( new_path, "/dev/r" );
+ strcat( new_path, path + strlen( "/dev/" ) );
+
+ return new_path;
+}
+#endif /* __FreeBSD__ */
+#endif
+
+dvd_reader_t *DVDOpen( const char *path )
+{
+ struct stat fileinfo;
+ int ret, have_css;
+ char *dev_name = 0;
+
+ if( path == NULL )
+ return 0;
+
+#ifdef WIN32
+ /* Stat doesn't work on devices under mingwin/cygwin. */
+ if( path[0] && path[1] == ':' && path[2] == '\0' )
+ {
+ /* Don't try to stat the file */
+ fileinfo.st_mode = S_IFBLK;
+ }
+ else
+#endif
+ {
+ ret = stat( path, &fileinfo );
+ if( ret < 0 ) {
+ /* If we can't stat the file, give up */
+ fprintf( stderr, "libdvdread: Can't stat %s\n", path );
+ perror("");
+ return 0;
+ }
+ }
+
+ /* Try to open libdvdcss or fall back to standard functions */
+ have_css = dvdinput_setup();
+
+ /* First check if this is a block/char device or a file*/
+ if( S_ISBLK( fileinfo.st_mode ) ||
+ S_ISCHR( fileinfo.st_mode ) ||
+ S_ISREG( fileinfo.st_mode ) ) {
+
+ /**
+ * Block devices and regular files are assumed to be DVD-Video images.
+ */
+#if defined(__sun)
+ return DVDOpenImageFile( sun_block2char( path ), have_css );
+#elif defined(SYS_BSD)
+ return DVDOpenImageFile( bsd_block2char( path ), have_css );
+#else
+ return DVDOpenImageFile( path, have_css );
+#endif
+
+ } else if( S_ISDIR( fileinfo.st_mode ) ) {
+ dvd_reader_t *auth_drive = 0;
+ char *path_copy;
+#if defined(SYS_BSD)
+ struct fstab* fe;
+#elif defined(__sun) || defined(__linux__) || defined(__CYGWIN__)
+ FILE *mntfile;
+#endif
+
+ /* XXX: We should scream real loud here. */
+ if( !(path_copy = strdup( path ) ) ) return 0;
+
+ /* Resolve any symlinks and get the absolut dir name. */
+ {
+ char *new_path;
+ int cdir = open( ".", O_RDONLY );
+
+ if( cdir >= 0 ) {
+ chdir( path_copy );
+ new_path = getcwd( NULL, PATH_MAX );
+#ifndef __MINGW32__
+ fchdir( cdir );
+#endif
+ close( cdir );
+ if( new_path ) {
+ free( path_copy );
+ path_copy = new_path;
+ }
+ }
+ }
+
+ /**
+ * If we're being asked to open a directory, check if that directory
+ * is the mountpoint for a DVD-ROM which we can use instead.
+ */
+
+ if( strlen( path_copy ) > 1 ) {
+ if( path_copy[ strlen( path_copy ) - 1 ] == '/' )
+ path_copy[ strlen( path_copy ) - 1 ] = '\0';
+ }
+
+ if( strlen( path_copy ) > 9 ) {
+ if( !strcasecmp( &(path_copy[ strlen( path_copy ) - 9 ]),
+ "/video_ts" ) ) {
+ path_copy[ strlen( path_copy ) - 9 ] = '\0';
+ }
+ }
+
+#if defined(SYS_BSD)
+ if( ( fe = getfsfile( path_copy ) ) ) {
+ dev_name = bsd_block2char( fe->fs_spec );
+ fprintf( stderr,
+ "libdvdread: Attempting to use device %s"
+ " mounted on %s for CSS authentication\n",
+ dev_name,
+ fe->fs_file );
+ auth_drive = DVDOpenImageFile( dev_name, have_css );
+ }
+#elif defined(__sun)
+ mntfile = fopen( MNTTAB, "r" );
+ if( mntfile ) {
+ struct mnttab mp;
+ int res;
+
+ while( ( res = getmntent( mntfile, &mp ) ) != -1 ) {
+ if( res == 0 && !strcmp( mp.mnt_mountp, path_copy ) ) {
+ dev_name = sun_block2char( mp.mnt_special );
+ fprintf( stderr,
+ "libdvdread: Attempting to use device %s"
+ " mounted on %s for CSS authentication\n",
+ dev_name,
+ mp.mnt_mountp );
+ auth_drive = DVDOpenImageFile( dev_name, have_css );
+ break;
+ }
+ }
+ fclose( mntfile );
+ }
+#elif defined(__linux__) || defined(__CYGWIN__)
+ mntfile = fopen( MOUNTED, "r" );
+ if( mntfile ) {
+ struct mntent *me;
+
+ while( ( me = getmntent( mntfile ) ) ) {
+ if( !strcmp( me->mnt_dir, path_copy ) ) {
+ fprintf( stderr,
+ "libdvdread: Attempting to use device %s"
+ " mounted on %s for CSS authentication\n",
+ me->mnt_fsname,
+ me->mnt_dir );
+ auth_drive = DVDOpenImageFile( me->mnt_fsname, have_css );
+ dev_name = strdup(me->mnt_fsname);
+ break;
+ }
+ }
+ fclose( mntfile );
+ }
+#elif defined(__MINGW32__)
+ dev_name = strdup(path);
+ auth_drive = DVDOpenImageFile( path, have_css );
+#endif
+ if( !dev_name ) {
+ fprintf( stderr, "libdvdread: Couldn't find device name.\n" );
+ } else if( !auth_drive ) {
+ fprintf( stderr, "libdvdread: Device %s inaccessible, "
+ "CSS authentication not available.\n", dev_name );
+ }
+
+ free( dev_name );
+ free( path_copy );
+
+ /**
+ * If we've opened a drive, just use that.
+ */
+ if( auth_drive ) return auth_drive;
+
+ /**
+ * Otherwise, we now try to open the directory tree instead.
+ */
+ return DVDOpenPath( path );
+ }
+
+ /* If it's none of the above, screw it. */
+ fprintf( stderr, "libdvdread: Could not open %s\n", path );
+ return 0;
+}
+
+void DVDClose( dvd_reader_t *dvd )
+{
+ if( dvd ) {
+ if( dvd->dev ) dvdinput_close( dvd->dev );
+ if( dvd->path_root ) free( dvd->path_root );
+ if( dvd->udfcache ) FreeUDFCache( dvd->udfcache );
+ free( dvd );
+ }
+}
+
+/**
+ * Open an unencrypted file on a DVD image file.
+ */
+static dvd_file_t *DVDOpenFileUDF( dvd_reader_t *dvd, char *filename )
+{
+ uint32_t start, len;
+ dvd_file_t *dvd_file;
+
+ start = UDFFindFile( dvd, filename, &len );
+ if( !start ) return 0;
+
+ dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
+ if( !dvd_file ) return 0;
+ dvd_file->dvd = dvd;
+ dvd_file->lb_start = start;
+ dvd_file->seek_pos = 0;
+ memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
+ memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
+ dvd_file->filesize = len / DVD_VIDEO_LB_LEN;
+
+ return dvd_file;
+}
+
+/**
+ * Searches for <file> in directory <path>, ignoring case.
+ * Returns 0 and full filename in <filename>.
+ * or -1 on file not found.
+ * or -2 on path not found.
+ */
+static int findDirFile( const char *path, const char *file, char *filename )
+{
+ DIR *dir;
+ struct dirent *ent;
+
+ dir = opendir( path );
+ if( !dir ) return -2;
+
+ while( ( ent = readdir( dir ) ) != NULL ) {
+ if( !strcasecmp( ent->d_name, file ) ) {
+ sprintf( filename, "%s%s%s", path,
+ ( ( path[ strlen( path ) - 1 ] == '/' ) ? "" : "/" ),
+ ent->d_name );
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+static int findDVDFile( dvd_reader_t *dvd, const char *file, char *filename )
+{
+ char video_path[ PATH_MAX + 1 ];
+ const char *nodirfile;
+ int ret;
+
+ /* Strip off the directory for our search */
+ if( !strncasecmp( "/VIDEO_TS/", file, 10 ) ) {
+ nodirfile = &(file[ 10 ]);
+ } else {
+ nodirfile = file;
+ }
+
+ ret = findDirFile( dvd->path_root, nodirfile, filename );
+ if( ret < 0 ) {
+ /* Try also with adding the path, just in case. */
+ sprintf( video_path, "%s/VIDEO_TS/", dvd->path_root );
+ ret = findDirFile( video_path, nodirfile, filename );
+ if( ret < 0 ) {
+ /* Try with the path, but in lower case. */
+ sprintf( video_path, "%s/video_ts/", dvd->path_root );
+ ret = findDirFile( video_path, nodirfile, filename );
+ if( ret < 0 ) {
+ return 0;
+ }
+ }
+ }
+
+ return 1;
+}
+
+/**
+ * Open an unencrypted 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;
+ dvd_input_t dev;
+
+ /* Get the full path of the file. */
+ if( !findDVDFile( dvd, filename, full_path ) ) return 0;
+
+ dev = dvdinput_open( full_path );
+ if( !dev ) return 0;
+
+ dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
+ if( !dvd_file ) return 0;
+ dvd_file->dvd = dvd;
+ dvd_file->lb_start = 0;
+ dvd_file->seek_pos = 0;
+ memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
+ memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
+ dvd_file->filesize = 0;
+
+ if( stat( full_path, &fileinfo ) < 0 ) {
+ fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
+ free( dvd_file );
+ return 0;
+ }
+ dvd_file->title_sizes[ 0 ] = fileinfo.st_size / DVD_VIDEO_LB_LEN;
+ dvd_file->title_devs[ 0 ] = dev;
+ dvd_file->filesize = dvd_file->title_sizes[ 0 ];
+
+ return dvd_file;
+}
+
+static dvd_file_t *DVDOpenVOBUDF( dvd_reader_t *dvd, int title, int menu )
+{
+ char filename[ MAX_UDF_FILE_NAME_LEN ];
+ uint32_t start, len;
+ dvd_file_t *dvd_file;
+
+ if( title == 0 ) {
+ sprintf( filename, "/VIDEO_TS/VIDEO_TS.VOB" );
+ } else {
+ sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, menu ? 0 : 1 );
+ }
+ start = UDFFindFile( dvd, filename, &len );
+ if( start == 0 ) return 0;
+
+ dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
+ if( !dvd_file ) return 0;
+ dvd_file->dvd = dvd;
+ /*Hack*/ dvd_file->css_title = title << 1 | menu;
+ dvd_file->lb_start = start;
+ dvd_file->seek_pos = 0;
+ memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
+ memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
+ dvd_file->filesize = len / DVD_VIDEO_LB_LEN;
+
+ /* Calculate the complete file size for every file in the VOBS */
+ if( !menu ) {
+ int cur;
+
+ for( cur = 2; cur < 10; cur++ ) {
+ sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, cur );
+ if( !UDFFindFile( dvd, filename, &len ) ) break;
+ dvd_file->filesize += len / DVD_VIDEO_LB_LEN;
+ }
+ }
+
+ if( dvd->css_state == 1 /* Need key init */ ) {
+// initAllCSSKeys( dvd );
+// dvd->css_state = 2;
+ }
+ /*
+ if( dvdinput_title( dvd_file->dvd->dev, (int)start ) < 0 ) {
+ fprintf( stderr, "libdvdread: Error cracking CSS key for %s\n",
+ filename );
+ }
+ */
+
+ return dvd_file;
+}
+
+static dvd_file_t *DVDOpenVOBPath( dvd_reader_t *dvd, int title, int menu )
+{
+ char filename[ MAX_UDF_FILE_NAME_LEN ];
+ char full_path[ PATH_MAX + 1 ];
+ struct stat fileinfo;
+ dvd_file_t *dvd_file;
+ int i;
+
+ dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
+ if( !dvd_file ) return 0;
+ dvd_file->dvd = dvd;
+ /*Hack*/ dvd_file->css_title = title << 1 | menu;
+ dvd_file->lb_start = 0;
+ dvd_file->seek_pos = 0;
+ memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
+ memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
+ dvd_file->filesize = 0;
+
+ if( menu ) {
+ dvd_input_t dev;
+
+ if( title == 0 ) {
+ sprintf( filename, "VIDEO_TS.VOB" );
+ } else {
+ sprintf( filename, "VTS_%02i_0.VOB", title );
+ }
+ if( !findDVDFile( dvd, filename, full_path ) ) {
+ free( dvd_file );
+ return 0;
+ }
+
+ dev = dvdinput_open( full_path );
+ if( dev == NULL ) {
+ free( dvd_file );
+ return 0;
+ }
+
+ if( stat( full_path, &fileinfo ) < 0 ) {
+ fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
+ free( dvd_file );
+ return 0;
+ }
+ dvd_file->title_sizes[ 0 ] = fileinfo.st_size / DVD_VIDEO_LB_LEN;
+ dvd_file->title_devs[ 0 ] = dev;
+ dvdinput_title( dvd_file->title_devs[0], 0);
+ dvd_file->filesize = dvd_file->title_sizes[ 0 ];
+
+ } else {
+ for( i = 0; i < 9; ++i ) {
+
+ sprintf( filename, "VTS_%02i_%i.VOB", title, i + 1 );
+ if( !findDVDFile( dvd, filename, full_path ) ) {
+ break;
+ }
+
+ if( stat( full_path, &fileinfo ) < 0 ) {
+ fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
+ break;
+ }
+
+ dvd_file->title_sizes[ i ] = fileinfo.st_size / DVD_VIDEO_LB_LEN;
+ dvd_file->title_devs[ i ] = dvdinput_open( full_path );
+ dvdinput_title( dvd_file->title_devs[ i ], 0 );
+ dvd_file->filesize += dvd_file->title_sizes[ i ];
+ }
+ if( !dvd_file->title_devs[ 0 ] ) {
+ free( dvd_file );
+ return 0;
+ }
+ }
+
+ return dvd_file;
+}
+
+dvd_file_t *DVDOpenFile( dvd_reader_t *dvd, int titlenum,
+ dvd_read_domain_t domain )
+{
+ char filename[ MAX_UDF_FILE_NAME_LEN ];
+
+ /* Check arguments. */
+ if( dvd == NULL || titlenum < 0 )
+ return NULL;
+
+ switch( domain ) {
+ case DVD_READ_INFO_FILE:
+ if( titlenum == 0 ) {
+ sprintf( filename, "/VIDEO_TS/VIDEO_TS.IFO" );
+ } else {
+ sprintf( filename, "/VIDEO_TS/VTS_%02i_0.IFO", titlenum );
+ }
+ break;
+ case DVD_READ_INFO_BACKUP_FILE:
+ if( titlenum == 0 ) {
+ sprintf( filename, "/VIDEO_TS/VIDEO_TS.BUP" );
+ } else {
+ sprintf( filename, "/VIDEO_TS/VTS_%02i_0.BUP", titlenum );
+ }
+ break;
+ case DVD_READ_MENU_VOBS:
+ if( dvd->isImageFile ) {
+ return DVDOpenVOBUDF( dvd, titlenum, 1 );
+ } else {
+ return DVDOpenVOBPath( dvd, titlenum, 1 );
+ }
+ break;
+ case DVD_READ_TITLE_VOBS:
+ if( titlenum == 0 ) return 0;
+ if( dvd->isImageFile ) {
+ return DVDOpenVOBUDF( dvd, titlenum, 0 );
+ } else {
+ return DVDOpenVOBPath( dvd, titlenum, 0 );
+ }
+ break;
+ default:
+ fprintf( stderr, "libdvdread: Invalid domain for file open.\n" );
+ return NULL;
+ }
+
+ if( dvd->isImageFile ) {
+ return DVDOpenFileUDF( dvd, filename );
+ } else {
+ return DVDOpenFilePath( dvd, filename );
+ }
+}
+
+void DVDCloseFile( dvd_file_t *dvd_file )
+{
+ int i;
+
+ if( dvd_file ) {
+ if( dvd_file->dvd->isImageFile ) {
+ ;
+ } else {
+ for( i = 0; i < 9; ++i ) {
+ if( dvd_file->title_devs[ i ] ) {
+ dvdinput_close( dvd_file->title_devs[i] );
+ }
+ }
+ }
+
+ free( dvd_file );
+ dvd_file = 0;
+ }
+}
+
+/* Internal, but used from dvd_udf.c */
+int UDFReadBlocksRaw( dvd_reader_t *device, uint32_t lb_number,
+ size_t block_count, unsigned char *data,
+ int encrypted )
+{
+ int ret;
+
+ if( !device->dev ) {
+ fprintf( stderr, "libdvdread: Fatal error in block read.\n" );
+ return 0;
+ }
+
+ ret = dvdinput_seek( device->dev, (int) lb_number );
+ if( ret != (int) lb_number ) {
+ fprintf( stderr, "libdvdread: Can't seek to block %u\n", lb_number );
+ return 0;
+ }
+
+ return dvdinput_read( device->dev, (char *) data,
+ (int) block_count, encrypted );
+}
+
+/* This is using a single input and starting from 'dvd_file->lb_start' offset.
+ *
+ * Reads 'block_count' blocks from 'dvd_file' at block offset 'offset'
+ * into the buffer located at 'data' and if 'encrypted' is set
+ * descramble the data if it's encrypted. Returning either an
+ * negative error or the number of blocks read. */
+static int DVDReadBlocksUDF( dvd_file_t *dvd_file, uint32_t offset,
+ size_t block_count, unsigned char *data,
+ int encrypted )
+{
+ return UDFReadBlocksRaw( dvd_file->dvd, dvd_file->lb_start + offset,
+ block_count, data, encrypted );
+}
+
+/* This is using possibly several inputs and starting from an offset of '0'.
+ *
+ * Reads 'block_count' blocks from 'dvd_file' at block offset 'offset'
+ * into the buffer located at 'data' and if 'encrypted' is set
+ * descramble the data if it's encrypted. Returning either an
+ * negative error or the number of blocks read. */
+static int DVDReadBlocksPath( dvd_file_t *dvd_file, unsigned int offset,
+ size_t block_count, unsigned char *data,
+ int encrypted )
+{
+ int i;
+ int ret, ret2, off;
+
+ ret = 0;
+ ret2 = 0;
+ for( i = 0; i < 9; ++i ) {
+ if( !dvd_file->title_sizes[ i ] ) return 0; /* Past end of file */
+
+ if( offset < dvd_file->title_sizes[ i ] ) {
+ if( ( offset + block_count ) <= dvd_file->title_sizes[ i ] ) {
+ off = dvdinput_seek( dvd_file->title_devs[ i ], (int)offset );
+ if( off < 0 || off != (int)offset ) {
+ fprintf( stderr, "libdvdread: Can't seek to block %d\n",
+ offset );
+ return off < 0 ? off : 0;
+ }
+ ret = dvdinput_read( dvd_file->title_devs[ i ], data,
+ (int)block_count, encrypted );
+ break;
+ } else {
+ size_t part1_size = dvd_file->title_sizes[ i ] - offset;
+ /* FIXME: Really needs to be a while loop.
+ * (This is only true if you try and read >1GB at a time) */
+
+ /* Read part 1 */
+ off = dvdinput_seek( dvd_file->title_devs[ i ], (int)offset );
+ if( off < 0 || off != (int)offset ) {
+ fprintf( stderr, "libdvdread: Can't seek to block %d\n",
+ offset );
+ return off < 0 ? off : 0;
+ }
+ ret = dvdinput_read( dvd_file->title_devs[ i ], data,
+ (int)part1_size, encrypted );
+ if( ret < 0 ) return ret;
+ /* FIXME: This is wrong if i is the last file in the set.
+ * also error from this read will not show in ret. */
+
+ /* Does the next part exist? If not then return now. */
+ if( !dvd_file->title_devs[ i + 1 ] ) return ret;
+
+ /* Read part 2 */
+ off = dvdinput_seek( dvd_file->title_devs[ i + 1 ], 0 );
+ if( off < 0 || off != 0 ) {
+ fprintf( stderr, "libdvdread: Can't seek to block %d\n",
+ 0 );
+ return off < 0 ? off : 0;
+ }
+ ret2 = dvdinput_read( dvd_file->title_devs[ i + 1 ],
+ data + ( part1_size
+ * (int64_t)DVD_VIDEO_LB_LEN ),
+ (int)(block_count - part1_size),
+ encrypted );
+ if( ret2 < 0 ) return ret2;
+ break;
+ }
+ } else {
+ offset -= dvd_file->title_sizes[ i ];
+ }
+ }
+
+ return ret + ret2;
+}
+
+/* This is broken reading more than 2Gb at a time is ssize_t is 32-bit. */
+ssize_t DVDReadBlocks( dvd_file_t *dvd_file, int offset,
+ size_t block_count, unsigned char *data )
+{
+ int ret;
+
+ /* Check arguments. */
+ if( dvd_file == NULL || offset < 0 || data == NULL )
+ return -1;
+
+ /* Hack, and it will still fail for multiple opens in a threaded app ! */
+ if( dvd_file->dvd->css_title != dvd_file->css_title ) {
+ dvd_file->dvd->css_title = dvd_file->css_title;
+ if( dvd_file->dvd->isImageFile ) {
+ dvdinput_title( dvd_file->dvd->dev, (int)dvd_file->lb_start );
+ }
+ /* Here each vobu has it's own dvdcss handle, so no need to update
+ else {
+ dvdinput_title( dvd_file->title_devs[ 0 ], (int)dvd_file->lb_start );
+ }*/
+ }
+
+ if( dvd_file->dvd->isImageFile ) {
+ ret = DVDReadBlocksUDF( dvd_file, (uint32_t)offset,
+ block_count, data, DVDINPUT_READ_DECRYPT );
+ } else {
+ ret = DVDReadBlocksPath( dvd_file, (unsigned int)offset,
+ block_count, data, DVDINPUT_READ_DECRYPT );
+ }
+
+ return (ssize_t)ret;
+}
+
+int DVDFileSeek( dvd_file_t *dvd_file, int offset )
+{
+ /* Check arguments. */
+ if( dvd_file == NULL || offset < 0 )
+ return -1;
+
+ if( offset > dvd_file->filesize * DVD_VIDEO_LB_LEN ) {
+ return -1;
+ }
+ dvd_file->seek_pos = (uint32_t) offset;
+ return offset;
+}
+
+ssize_t DVDReadBytes( dvd_file_t *dvd_file, void *data, size_t byte_size )
+{
+ unsigned char *secbuf;
+ unsigned int numsec, seek_sector, seek_byte;
+ int ret;
+
+ /* Check arguments. */
+ if( dvd_file == NULL || data == NULL )
+ return -1;
+
+ seek_sector = dvd_file->seek_pos / DVD_VIDEO_LB_LEN;
+ seek_byte = dvd_file->seek_pos % DVD_VIDEO_LB_LEN;
+
+ numsec = ( ( seek_byte + byte_size ) / DVD_VIDEO_LB_LEN ) +
+ ( ( ( seek_byte + byte_size ) % DVD_VIDEO_LB_LEN ) ? 1 : 0 );
+
+ secbuf = (unsigned char *) malloc( numsec * DVD_VIDEO_LB_LEN );
+ if( !secbuf ) {
+ fprintf( stderr, "libdvdread: Can't allocate memory "
+ "for file read!\n" );
+ return 0;
+ }
+
+ if( dvd_file->dvd->isImageFile ) {
+ ret = DVDReadBlocksUDF( dvd_file, (uint32_t) seek_sector,
+ (size_t) numsec, secbuf, DVDINPUT_NOFLAGS );
+ } else {
+ ret = DVDReadBlocksPath( dvd_file, seek_sector,
+ (size_t) numsec, secbuf, DVDINPUT_NOFLAGS );
+ }
+
+ if( ret != (int) numsec ) {
+ free( secbuf );
+ return ret < 0 ? ret : 0;
+ }
+
+ memcpy( data, &(secbuf[ seek_byte ]), byte_size );
+ free( secbuf );
+
+ dvd_file->seek_pos += byte_size;
+ return byte_size;
+}
+
+ssize_t DVDFileSize( dvd_file_t *dvd_file )
+{
+ /* Check arguments. */
+ if( dvd_file == NULL )
+ return -1;
+
+ return dvd_file->filesize;
+}
+
+int DVDDiscID( dvd_reader_t *dvd, unsigned char *discid )
+{
+ struct md5_ctx ctx;
+ int title;
+
+ /* Check arguments. */
+ if( dvd == NULL || discid == NULL )
+ return 0;
+
+ /* Go through the first 10 IFO:s, in order,
+ * and md5sum them, i.e VIDEO_TS.IFO and VTS_0?_0.IFO */
+ md5_init_ctx( &ctx );
+ for( title = 0; title < 10; title++ ) {
+ dvd_file_t *dvd_file = DVDOpenFile( dvd, title, DVD_READ_INFO_FILE );
+ if( dvd_file != NULL ) {
+ ssize_t bytes_read;
+ size_t file_size = dvd_file->filesize * DVD_VIDEO_LB_LEN;
+ char *buffer = malloc( file_size );
+
+ if( buffer == NULL ) {
+ fprintf( stderr, "libdvdread: DVDDiscId, failed to "
+ "allocate memory for file read!\n" );
+ return -1;
+ }
+ bytes_read = DVDReadBytes( dvd_file, buffer, file_size );
+ if( bytes_read != file_size ) {
+ fprintf( stderr, "libdvdread: DVDDiscId read returned %d bytes"
+ ", wanted %d\n", bytes_read, file_size );
+ DVDCloseFile( dvd_file );
+ return -1;
+ }
+
+ md5_process_bytes( buffer, file_size, &ctx );
+
+ DVDCloseFile( dvd_file );
+ free( buffer );
+ }
+ }
+ md5_finish_ctx( &ctx, discid );
+
+ return 0;
+}
+
+
+int DVDISOVolumeInfo( dvd_reader_t *dvd,
+ char *volid, unsigned int volid_size,
+ unsigned char *volsetid, unsigned int volsetid_size )
+{
+ unsigned char *buffer;
+ int ret;
+
+ /* Check arguments. */
+ if( dvd == NULL )
+ return 0;
+
+ if( dvd->dev == NULL ) {
+ /* No block access, so no ISO... */
+ return -1;
+ }
+
+ buffer = malloc( DVD_VIDEO_LB_LEN );
+ if( buffer == NULL ) {
+ fprintf( stderr, "libdvdread: DVDISOVolumeInfo, failed to "
+ "allocate memory for file read!\n" );
+ return -1;
+ }
+
+ ret = UDFReadBlocksRaw( dvd, 16, 1, buffer, 0 );
+ if( ret != 1 ) {
+ fprintf( stderr, "libdvdread: DVDISOVolumeInfo, failed to "
+ "read ISO9660 Primary Volume Descriptor!\n" );
+ return -1;
+ }
+
+ if( (volid != NULL) && (volid_size > 0) ) {
+ unsigned int n;
+ for(n = 0; n < 32; n++) {
+ if(buffer[40+n] == 0x20) {
+ break;
+ }
+ }
+
+ if(volid_size > n+1) {
+ volid_size = n+1;
+ }
+
+ memcpy(volid, &buffer[40], volid_size-1);
+ volid[volid_size-1] = '\0';
+ }
+
+ if( (volsetid != NULL) && (volsetid_size > 0) ) {
+ if(volsetid_size > 128) {