Adding upstream version 2:20.4+dfsg.upstream/2%20.4+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/libdvdnav-embedded/src/read_cache.h b/libdvdnav-embedded/src/read_cache.h
new file mode 100644
index 0000000..3a0e48c
--- /dev/null
+++ b/libdvdnav-embedded/src/read_cache.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2000 Rich Wareham <richwareham@users.sourceforge.net>
+ *
+ * This file is part of libdvdnav, a DVD navigation library.
+ *
+ * libdvdnav 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.
+ *
+ * libdvdnav 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 libdvdnav; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef LIBDVDNAV_READ_CACHE_H
+#define LIBDVDNAV_READ_CACHE_H
+
+/* Opaque cache type -- defined in dvdnav_internal.h */
+/* typedef struct read_cache_s read_cache_t; */
+
+/* EXPERIMENTAL: Setting the following to 1 will use an experimental multi-threaded
+ *               read-ahead cache.
+ */
+#define _MULTITHREAD_ 0
+
+/* Constructor/destructors */
+read_cache_t *dvdnav_read_cache_new(dvdnav_t* dvd_self);
+void dvdnav_read_cache_free(read_cache_t* self);
+
+/* This function MUST be called whenever self->file changes. */
+void dvdnav_read_cache_clear(read_cache_t *self);
+/* This function is called just after reading the NAV packet. */
+void dvdnav_pre_cache_blocks(read_cache_t *self, int sector, size_t block_count);
+/* This function will do the cache read.
+ * The buffer handed in must be malloced to take one dvd block.
+ * On a cache hit, a different buffer will be returned though.
+ * Those buffers must _never_ be freed. */
+int dvdnav_read_cache_block(read_cache_t *self, int sector, size_t block_count, uint8_t **buf);
+
+#endif /* LIBDVDNAV_READ_CACHE_H */