path: root/libdvdread/dvd_reader.c

/* -*- c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 * 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

#include "dvd_reader.h"
#include "dvd_input.h"
#include "dvd_udf.h"
#include "md5.h"

#include "dvdread_internal.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;

  /* block aligned malloc */
  void *align;
  
  /* error message verbosity level */
  int verbose;
};

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;
};


#define DVDREAD_VERBOSE_DEFAULT 0

int get_verbose(void)
{
  char *dvdread_verbose;
  int verbose;
  
  dvdread_verbose = getenv("DVDREAD_VERBOSE");
  if(dvdread_verbose) {
    verbose = (int)strtol(dvdread_verbose, NULL, 0);
  } else {
    verbose = DVDREAD_VERBOSE_DEFAULT;
  }
  return verbose;
}

int dvdread_verbose(dvd_reader_t *dvd)
{
  return dvd->verbose;
}

dvd_reader_t *device_of_file(dvd_file_t *file)
{
  return file->dvd;
}

/**
 * Returns the compiled version. (DVDREAD_VERSION as an int)
 */
int DVDVersion(void)
{
  return DVDREAD_VERSION;
}


/**
 * 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) {
    re