/*****************************************************************************
* dvd_udf.c: udf filesystem tools.
- * ---
+ *****************************************************************************
* Mainly used to find asolute logical block adress of *.ifo files. It only
* contains the basic udf handling functions
*****************************************************************************
* Copyright (C) 1998-2001 VideoLAN
- * $Id: dvd_udf.c,v 1.2 2001/02/18 01:42:05 stef Exp $
+ * $Id: dvd_udf.c,v 1.8 2001/05/31 03:12:49 sam Exp $
*
* Author: Stéphane Borel <stef@via.ecp.fr>
*
* based on:
* - dvdudf by Christian Wolff <scarabaeus@convergence.de>
+ * - fixes by Billy Biggs <vektor@dumbterm.net>
*
* 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
+
/*
* Preamble
*/
#include "defs.h"
+#ifdef HAVE_CSS
+# define MODULE_NAME dvd
+#else /* HAVE_CSS */
+# define MODULE_NAME dvdnocss
+#endif /* HAVE_CSS */
+
+#include "modules_inner.h"
+
#include <stdio.h>
-#include <unistd.h>
#include <string.h>
#include <fcntl.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#elif defined( _MSC_VER ) && defined( _WIN32 )
+# include <io.h>
+#endif
+
+#ifdef STRNCASECMP_IN_STRINGS_H
+# include <strings.h>
+#endif
+
#include "common.h"
#include "intf_msg.h"
#include "dvd_css.h"
/*****************************************************************************
* UDFReadLB: reads absolute Logical Block of the disc
- * ---
- * returns number of read bytes on success, 0 on error
+ *****************************************************************************
+ * Returns number of read bytes on success, 0 on error
*****************************************************************************/
static int UDFReadLB( int i_fd, off_t i_lba, size_t i_block_count, u8 *pi_data )
{
+#if !defined( WIN32 )
if( i_fd < 0 )
+#else
+ DWORD read;
+
+ if( (HANDLE) i_fd == INVALID_HANDLE_VALUE )
+#endif
{
return 0;
}
+#if !defined( WIN32 )
if( lseek( i_fd, i_lba * (off_t) DVD_LB_SIZE, SEEK_SET ) < 0 )
+#else
+ if( SetFilePointer( (HANDLE) i_fd, i_lba * (off_t) DVD_LB_SIZE,
+ NULL, FILE_BEGIN ) == -1 )
+#endif
{
intf_ErrMsg( "UDF: Postion not found" );
return 0;
}
+#if !defined( WIN32 )
return read( i_fd, pi_data, i_block_count *DVD_LB_SIZE);
+#else
+ if(!ReadFile( (HANDLE) i_fd, pi_data, i_block_count * DVD_LB_SIZE,
+ &read, NULL) || read != i_block_count * DVD_LB_SIZE )
+ {
+ return 0;
+ }
+
+ return read;
+#endif
}
/*****************************************************************************
* UDFLogVolume: reads the volume descriptor and checks the parameters
- * ---
- * returns 0 on OK, 1 on error
+ *****************************************************************************
+ * Returns 0 on OK, 1 on error
*****************************************************************************/
static int UDFLogVolume(u8 * pi_data, char * p_volume_descriptor )
{
/*****************************************************************************
* UDFMapICB: Maps ICB to FileAD
- * ---
+ *****************************************************************************
* ICB: Location of ICB of directory to scan
* FileType: Type of the file
* File: Location of file the ICB is pointing to
/*****************************************************************************
* UDFScanDir: serach filename in dir
- * ---
+ *****************************************************************************
* Dir: Location of directory to scan
* FileName: Name of file to look for
* FileICB: Location of ICB of the found file
static int UDFScanDir( struct ad_s dir, char * psz_filename,
struct ad_s * p_file_icb, struct partition_s partition )
{
- u8 pi_lb[DVD_LB_SIZE];
+ u8 pi_lb[2*DVD_LB_SIZE];
u32 i_lba;
u16 i_tag_id;
u8 i_file_char;
/* Scan dir for ICB of file */
i_lba = partition.i_start + dir.i_location;
-
+#if 0
do
{
if( !UDFReadLB( partition.i_fd, i_lba++, 1, pi_lb ) )
} while( i_lba <=
partition.i_start + dir.i_location + ( dir.i_length - 1 ) / DVD_LB_SIZE );
+#else
+
+ if( UDFReadLB( partition.i_fd, i_lba, 2, pi_lb ) <= 0 ) {
+ return 0;
+ }
+
+ p = 0;
+ while( p < dir.i_length )
+ {
+ if( p > DVD_LB_SIZE )
+ {
+ ++i_lba;
+ p -= DVD_LB_SIZE;
+ dir.i_length -= DVD_LB_SIZE;
+ if( UDFReadLB( partition.i_fd, i_lba, 2, pi_lb ) <= 0 )
+ {
+ return 0;
+ }
+ }
+
+ UDFDescriptor( &pi_lb[p], &i_tag_id );
+
+ if( i_tag_id == 257 )
+ {
+ p += UDFFileIdentifier( &pi_lb[p], &i_file_char,
+ psz_temp, p_file_icb, partition );
+ if( !strcasecmp( psz_filename, psz_temp ) )
+ {
+ return 1;
+ }
+ }
+ else
+ {
+ return 0;
+ }
+ }
+
+#endif
return 0;
}
-
-/******************************************************************************
+/*****************************************************************************
* UDFFindPartition: looks for a partition on the disc
- * ---
+ *****************************************************************************
* partnum: number of the partition, starting at 0
* part: structure to fill with the partition information
* return 1 if partition found, 0 on error;
- ******************************************************************************/
+ *****************************************************************************/
static int UDFFindPartition( int i_part_nb, struct partition_s *p_partition )
{
u8 pi_lb[DVD_LB_SIZE];
}
-/******************************************************************************
+/*****************************************************************************
* UDFFindFile: looks for a file on the UDF disc/imagefile
- * ---
+ *****************************************************************************
* Path has to be the absolute pathname on the UDF filesystem,
* starting with '/'.
* returns absolute LB number, or 0 on error
- ******************************************************************************/
+ *****************************************************************************/
u32 UDFFindFile( int i_fd, char * psz_path )
{
struct partition_s partition;
return partition.i_start + file.i_location;
}
+
projects / vlc / blobdiff