importing libdvdread 0.9.3 files

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7030 b3059339-0415-0410-9bf9-f77b7e298cf2

17 files changed, 6757 insertions, 0 deletions

diff --git a/libmpdvdkit2/bswap.h b/libmpdvdkit2/bswap.h
new file mode 100644
index 0000000000..dd7417059a
--- /dev/null
+++ b/libmpdvdkit2/bswap.h
@@ -0,0 +1,87 @@
+#ifndef BSWAP_H_INCLUDED
+#define BSWAP_H_INCLUDED
+
+/*
+ * Copyright (C) 2000, 2001 Billy Biggs <vektor@dumbterm.net>,
+ *                          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 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
+ */
+
+#include <config.h>
+
+#if defined(WORDS_BIGENDIAN)
+/* All bigendian systems are fine, just ignore the swaps. */  
+#define B2N_16(x) (void)(x)
+#define B2N_32(x) (void)(x)
+#define B2N_64(x) (void)(x)
+
+#else 
+
+#if defined(__linux__)
+#include <byteswap.h>
+#define B2N_16(x) x = bswap_16(x)
+#define B2N_32(x) x = bswap_32(x)
+#define B2N_64(x) x = bswap_64(x)
+
+#elif defined(__NetBSD__)
+#include <sys/endian.h>
+#define B2N_16(x) BE16TOH(x)
+#define B2N_32(x) BE32TOH(x)
+#define B2N_64(x) BE64TOH(x)
+
+#elif defined(__OpenBSD__)
+#include <sys/endian.h>
+#define B2N_16(x) x = swap16(x)
+#define B2N_32(x) x = swap32(x)
+#define B2N_64(x) x = swap64(x)
+
+/* This is a slow but portable implementation, it has multiple evaluation 
+ * problems so beware.
+ * FreeBSD and Solaris don't have <byteswap.h> or any other such 
+ * functionality! 
+ */
+
+#elif defined(__FreeBSD__) || defined(__sun) || defined(__bsdi__)
+#define B2N_16(x) \
+ x = ((((x) & 0xff00) >> 8) | \
+      (((x) & 0x00ff) << 8))
+#define B2N_32(x) \
+ x = ((((x) & 0xff000000) >> 24) | \
+      (((x) & 0x00ff0000) >>  8) | \
+      (((x) & 0x0000ff00) <<  8) | \
+      (((x) & 0x000000ff) << 24))
+#define B2N_64(x) \
+ x = ((((x) & 0xff00000000000000) >> 56) | \
+      (((x) & 0x00ff000000000000) >> 40) | \
+      (((x) & 0x0000ff0000000000) >> 24) | \
+      (((x) & 0x000000ff00000000) >>  8) | \
+      (((x) & 0x00000000ff000000) <<  8) | \
+      (((x) & 0x0000000000ff0000) << 24) | \
+      (((x) & 0x000000000000ff00) << 40) | \
+      (((x) & 0x00000000000000ff) << 56))
+
+#else
+
+/* If there isn't a header provided with your system with this functionality
+ * add the relevant || define( ) to the portable implementation above.
+ */
+#error "You need to add endian swap macros for you're system"
+
+#endif
+
+#endif /* WORDS_BIGENDIAN */
+
+#endif /* BSWAP_H_INCLUDED */
diff --git a/libmpdvdkit2/dvd_input.c b/libmpdvdkit2/dvd_input.c
new file mode 100644
index 0000000000..c2d788fdb2
--- /dev/null
+++ b/libmpdvdkit2/dvd_input.c
@@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2002 Samuel Hocevar <sam@zoy.org>,
+ *                    Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <dlfcn.h>
+
+#include "dvd_reader.h"
+#include "dvd_input.h"
+
+/* For libdvdcss */
+typedef struct dvdcss_s *dvdcss_handle;
+
+dvdcss_handle (*DVDcss_open)  (const char *);
+int           (*DVDcss_close) (dvdcss_handle);
+int           (*DVDcss_seek)  (dvdcss_handle, int, int);
+int           (*DVDcss_title) (dvdcss_handle, int); 
+int           (*DVDcss_read)  (dvdcss_handle, void *, int, int);
+char *        (*DVDcss_error) (dvdcss_handle);
+
+
+/* The DVDinput handle, add stuff here for new input methods. */
+struct dvd_input_s {
+  /* libdvdcss handle */
+  dvdcss_handle dvdcss;
+  
+  /* dummy file input */
+  int fd;
+};
+
+
+/**
+ * initialize and open a DVD device or file.
+ */
+static dvd_input_t css_open(const char *target)
+{
+  dvd_input_t dev;
+  
+  /* Allocate the handle structure */
+  dev = (dvd_input_t) malloc(sizeof(dvd_input_t));
+  if(dev == NULL) {
+    fprintf(stderr, "libdvdread: Could not allocate memory.\n");
+    return NULL;
+  }
+  
+  /* Really open it with libdvdcss */
+  dev->dvdcss = DVDcss_open(target);
+  if(dev->dvdcss == 0) {
+    fprintf(stderr, "libdvdread: Could not open device with libdvdcss.\n");
+    free(dev);
+    return NULL;
+  }
+  
+  return dev;
+}
+
+/**
+ * return the last error message
+ */
+static char *css_error(dvd_input_t dev)
+{
+  return DVDcss_error(dev->dvdcss);
+}
+
+/**
+ * seek into the device.
+ */
+static int css_seek(dvd_input_t dev, int blocks, int flags)
+{
+  return DVDcss_seek(dev->dvdcss, blocks, flags);
+}
+
+/**
+ * set the block for the begining of a new title (key).
+ */
+static int css_title(dvd_input_t dev, int block)
+{
+  return DVDcss_title(dev->dvdcss, block);
+}
+
+/**
+ * read data from the device.
+ */
+static int css_read(dvd_input_t dev, void *buffer, int blocks, int flags)
+{
+  return DVDcss_read(dev->dvdcss, buffer, blocks, flags);
+}
+
+/**
+ * close the DVD device and clean up the library.
+ */
+static int css_close(dvd_input_t dev)
+{
+  int ret;
+
+  ret = DVDcss_close(dev->dvdcss);
+
+  if(ret < 0)
+    return ret;
+
+  free(dev);
+
+  return 0;
+}
+
+
+
+
+
+
+/**
+ * initialize and open a DVD device or file.
+ */
+static dvd_input_t file_open(const char *target)
+{
+  dvd_input_t dev;
+  
+  /* Allocate the library structure */
+  dev = (dvd_input_t) malloc(sizeof(dvd_input_t));
+  if(dev == NULL) {
+    fprintf(stderr, "libdvdread: Could not allocate memory.\n");
+    return NULL;
+  }
+  
+  /* Open the device */
+  dev->fd = open(target, O_RDONLY);
+  if(dev->fd < 0) {
+    perror("libdvdread: Could not open input");
+    free(dev);
+    return NULL;
+  }
+  
+  return dev;
+}
+
+/**
+ * return the last error message
+ */
+static char *file_error(dvd_input_t dev)
+{
+  /* use strerror(errno)? */
+  return "unknown error";
+}
+
+/**
+ * seek into the device.
+ */
+static int file_seek(dvd_input_t dev, int blocks, int flags)
+{
+  off_t pos;
+
+  pos = lseek(dev->fd, (off_t)blocks * (off_t)DVD_VIDEO_LB_LEN, SEEK_SET);
+  if(pos < 0) {
+      return pos;
+  }
+  /* assert pos % DVD_VIDEO_LB_LEN == 0 */
+  return (int) (pos / DVD_VIDEO_LB_LEN);
+}
+
+/**
+ * set the block for the begining of a new title (key).
+ */
+static int file_title(dvd_input_t dev, int block)
+{
+  return -1;
+}
+
+/**
+ * read data from the device.
+ */
+static int file_read(dvd_input_t dev, void *buffer, int blocks, int flags)
+{
+  size_t len;
+  ssize_t ret;
+  
+  len = (size_t)blocks * DVD_VIDEO_LB_LEN;
+  
+  while(len > 0) {
+    
+    ret = read(dev->fd, buffer, len);
+    
+    if(ret < 0) {
+      /* One of the reads failed, too bad.  We won't even bother
+       * returning the reads that went ok, and as in the posix spec
+       * the file postition is left unspecified after a failure. */
+      return ret;
+    }
+    
+    if(ret == 0) {
+      /* Nothing more to read.  Return the whole blocks, if any, that we got.
+	 and adjust the file possition back to the previous block boundary. */
+      size_t bytes = (size_t)blocks * DVD_VIDEO_LB_LEN - len;
+      off_t over_read = -(bytes % DVD_VIDEO_LB_LEN);
+      /*off_t pos =*/ lseek(dev->fd, over_read, SEEK_CUR);
+      /* should have pos % 2048 == 0 */
+      return (int) (bytes / DVD_VIDEO_LB_LEN);
+    }
+    
+    len -= ret;
+  }
+
+  return blocks;
+}
+
+/**
+ * close the DVD device and clean up.
+ */
+static int file_close(dvd_input_t dev)
+{
+  int ret;
+
+  ret = close(dev->fd);
+
+  if(ret < 0)
+    return ret;
+
+  free(dev);
+
+  return 0;
+}
+
+
+/**
+ * Setup read functions with either libdvdcss or minimal DVD access.
+ */
+int DVDInputSetup(void)
+{
+  void *dvdcss_library = NULL;
+  char **dvdcss_version = NULL;
+  
+  dvdcss_library = dlopen("libdvdcss.so.2", RTLD_LAZY);
+  
+  if(dvdcss_library != NULL) {
+#if defined(__OpenBSD__) && !defined(__ELF__)
+#define U_S "_"
+#else
+#define U_S
+#endif
+    DVDcss_open = (dvdcss_handle (*)(const char*))
+      dlsym(dvdcss_library, U_S "dvdcss_open");
+    DVDcss_close = (int (*)(dvdcss_handle))
+      dlsym(dvdcss_library, U_S "dvdcss_close");
+    DVDcss_title = (int (*)(dvdcss_handle, int))
+      dlsym(dvdcss_library, U_S "dvdcss_title");
+    DVDcss_seek = (int (*)(dvdcss_handle, int, int))
+      dlsym(dvdcss_library, U_S "dvdcss_seek");
+    DVDcss_read = (int (*)(dvdcss_handle, void*, int, int))
+      dlsym(dvdcss_library, U_S "dvdcss_read");
+    DVDcss_error = (char* (*)(dvdcss_handle))
+      dlsym(dvdcss_library, U_S "dvdcss_error");
+    
+    dvdcss_version = (char **)dlsym(dvdcss_library, U_S "dvdcss_interface_2");
+
+    if(dlsym(dvdcss_library, U_S "dvdcss_crack")) {
+      fprintf(stderr, 
+	      "libdvdread: Old (pre-0.0.2) version of libdvdcss found.\n"
+	      "libdvdread: You should get the latest version from "
+	      "http://www.videolan.org/\n" );
+      dlclose(dvdcss_library);
+      dvdcss_library = NULL;
+    } else if(!DVDcss_open  || !DVDcss_close || !DVDcss_title || !DVDcss_seek
+	      || !DVDcss_read || !DVDcss_error || !dvdcss_version) {
+      fprintf(stderr,  "libdvdread: Missing symbols in libdvdcss.so.2, "
+	      "this shouldn't happen !\n");
+      dlclose(dvdcss_library);
+    }
+  }
+  
+  if(dvdcss_library != NULL) {
+    /*
+    char *psz_method = getenv( "DVDCSS_METHOD" );
+    char *psz_verbose = getenv( "DVDCSS_VERBOSE" );
+    fprintf(stderr, "DVDCSS_METHOD %s\n", psz_method);
+    fprintf(stderr, "DVDCSS_VERBOSE %s\n", psz_verbose);
+    */
+    fprintf(stderr, "libdvdread: Using libdvdcss version %s for DVD access\n",
+	    *dvdcss_version);
+    
+    /* libdvdcss wraper functions */
+    DVDinput_open  = css_open;
+    DVDinput_close = css_close;
+    DVDinput_seek  = css_seek;
+    DVDinput_title = css_title;
+    DVDinput_read  = css_read;
+    DVDinput_error = css_error;
+    return 1;
+    
+  } else {
+    fprintf(stderr, "libdvdread: Encrypted DVD support unavailable.\n");
+
+    /* libdvdcss replacement functions */
+    DVDinput_open  = file_open;
+    DVDinput_close = file_close;
+    DVDinput_seek  = file_seek;
+    DVDinput_title = file_title;
+    DVDinput_read  = file_read;
+    DVDinput_error = file_error;
+    return 0;
+  }
+}
diff --git a/libmpdvdkit2/dvd_input.h b/libmpdvdkit2/dvd_input.h
new file mode 100644
index 0000000000..638d60aebf
--- /dev/null
+++ b/libmpdvdkit2/dvd_input.h
@@ -0,0 +1,51 @@
+#ifndef DVD_INPUT_H_INCLUDED
+#define DVD_INPUT_H_INCLUDED
+
+/*
+ * Copyright (C) 2001, 2002 Samuel Hocevar <sam@zoy.org>,
+ *                          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 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.
+ */
+
+/**
+ * Defines and flags.  Make sure they fit the libdvdcss API!
+ */
+#define DVDINPUT_NOFLAGS         0
+
+#define DVDINPUT_READ_DECRYPT    (1 << 0)
+
+#define DVDINPUT_SEEK_MPEG       (1 << 0)
+#define DVDINPUT_SEEK_KEY        (1 << 1)
+
+
+typedef struct dvd_input_s *dvd_input_t;
+
+/**
+ * Pointers which will be filled either the input meathods functions.
+ */
+dvd_input_t (*DVDinput_open)  (const char *);
+int         (*DVDinput_close) (dvd_input_t);
+int         (*DVDinput_seek)  (dvd_input_t, int, int);
+int         (*DVDinput_title) (dvd_input_t, int); 
+int         (*DVDinput_read)  (dvd_input_t, void *, int, int);
+char *      (*DVDinput_error) (dvd_input_t);
+
+/**
+ * Setup function accessed by dvd_reader.c.  Returns 1 if there is CSS support.
+ */
+int DVDInputSetup(void);
+
+#endif /* DVD_INPUT_H_INCLUDED */
diff --git a/libmpdvdkit2/dvd_reader.c b/libmpdvdkit2/dvd_reader.c
new file mode 100644
index 0000000000..b296a49de3
--- /dev/null
+++ b/libmpdvdkit2/dvd_reader.c
@@ -0,0 +1,898 @@
+/*
+ * Copyright (C) 2001, 2002 Billy Biggs <vektor@dumbterm.net>,
+ *                          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 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 <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__)
+#define SYS_BSD 1
+#endif
+
+#if defined(__sun)
+#include <sys/mnttab.h>
+#elif defined(SYS_BSD)
+#include <fstab.h>
+#elif defined(__linux__)
+#include <mntent.h>
+#endif
+
+#include "dvd_udf.h"
+#include "dvd_input.h"
+#include "dvd_reader.h"
+
+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;
+};
+
+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;
+};
+
+/* 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;
+	
+    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;
+    
+    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. */
+    }
+    
+    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 );
+
+    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 )
+{
+    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
+
+dvd_reader_t *DVDOpen( const char *path )
+{
+    struct stat fileinfo;
+    int ret, have_css;
+    char *dev_name = 0;
+
+    if( !path ) return 0;
+
+    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 = DVDInputSetup();
+
+    /* 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__)
+	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 );
+		fchdir( cdir );
+		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__)
+        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 );
+	}
+#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 );
+        free( dvd );
+        dvd = 0;
+    }
+}
+
+/**
+ * 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 )