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-rw-r--r--genisoimage/dvd_reader.c295
1 files changed, 295 insertions, 0 deletions
diff --git a/genisoimage/dvd_reader.c b/genisoimage/dvd_reader.c
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+++ b/genisoimage/dvd_reader.c
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+/*
+ * 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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 14:34:31 +0000