Petri Hintukainen pushed to branch master at VideoLAN / libbluray
Commits:
000f083a by Yunxiang Li at 2019-06-08T08:40:49Z
add function to dump decrypted m2ts
- - - - -
4 changed files:
- src/libbluray/bluray.c
- src/libbluray/bluray.h
- src/libbluray/disc/disc.c
- src/libbluray/disc/disc.h
Changes:
=====================================
src/libbluray/bluray.c
=====================================
@@ -3765,6 +3765,21 @@ int bd_read_file(BLURAY *bd, const char *path, void
**data, int64_t *size)
return _bd_read_file(bd, NULL, path, data, size);
}
+struct bd_dir_s *bd_open_dir(BLURAY *bd, const char *dir)
+{
+ if (!bd || dir == NULL) {
+ return NULL;
+ }
+ return disc_open_dir(bd->disc, dir);
+}
+
+struct bd_file_s *bd_open_file_dec(BLURAY *bd, const char *path)
+{
+ if (!bd || path == NULL) {
+ return NULL;
+ }
+ return disc_open_path_dec(bd->disc, path);
+}
/*
* Metadata
=====================================
src/libbluray/bluray.h
=====================================
@@ -1094,6 +1094,26 @@ void bd_stop_bdj(BLURAY *bd); // shutdown BD-J and clean
up resources
*/
int bd_read_file(BLURAY *, const char *path, void **data, int64_t *size);
+/**
+ *
+ * Open a file/dir from BluRay Virtual File System.
+ *
+ * encrypted streams are decrypted, and because of how
+ * decryption works, it can only seek to (N*6144) bytes,
+ * and read 6144 bytes at a time.
+ * DO NOT mix any play functionalities with these functions.
+ * It might cause broken stream. In general, accessing
+ * mutiple file on disk at the same time is a bad idea.
+ * Caller must close with file_close()/dir_close().
+ *
+ * @param bd BLURAY object
+ * @param dir target directory (relative to disc root)
+ * @param path path to the file (relative to disc root)
+ * @return BD_DIR_H * or BD_FILE_H *, NULL if failed
+ */
+struct bd_dir_s *bd_open_dir(BLURAY *, const char *dir);
+struct bd_file_s *bd_open_file_dec(BLURAY *, const char *path);
+
#ifdef __cplusplus
}
=====================================
src/libbluray/disc/disc.c
=====================================
@@ -579,6 +579,26 @@ int disc_cache_bdrom_file(BD_DISC *p, const char
*rel_path, const char *cache_pa
return 0;
}
+BD_FILE_H *disc_open_path_dec(BD_DISC *p, const char *rel_path)
+{
+ size_t size = strlen(rel_path);
+ char *suf = (size > 5) ? rel_path + (size - 5) : rel_path;
+
+ /* check if it's a stream */
+ if (strncmp(rel_path, "BDMV" DIR_SEP "STREAM", 11)) { // not equal
+ return disc_open_path(p, rel_path);
+ } else if (!strcmp(suf, ".m2ts")) { // equal
+ return disc_open_stream(p, suf - 5);
+ } else if (!strcmp(suf+1, ".MTS")) { // equal
+ return disc_open_stream(p, suf - 4);
+ } else if (!strcmp(suf, ".ssif")) { // equal
+ BD_DEBUG(DBG_FILE | DBG_CRIT, "error opening file %s, ssif is not yet
supported.\n", rel_path);
+ } else {
+ BD_DEBUG(DBG_FILE | DBG_CRIT, "error opening file %s\n", rel_path);
+ }
+ return NULL;
+}
+
/*
* persistent properties storage
*/
=====================================
src/libbluray/disc/disc.h
=====================================
@@ -80,8 +80,12 @@ BD_PRIVATE size_t disc_read_file(BD_DISC *disc, const char
*dir, const char *fil
/* Update virtual package */
BD_PRIVATE void disc_update(BD_DISC *disc, const char *overlay_root);
+/* Cache file directly from BD-ROM */
BD_PRIVATE int disc_cache_bdrom_file(BD_DISC *p, const char *rel_path, const
char *cache_path);
+/* Open decrypted file */
+BD_PRIVATE struct bd_file_s *disc_open_path_dec(BD_DISC *p, const char
*rel_path);
+
/* open BD-ROM directory (relative to disc root) */
BD_PRIVATE struct bd_dir_s *disc_open_bdrom_dir(BD_DISC *disc, const char
*path);
View it on GitLab:
https://code.videolan.org/videolan/libbluray/commit/000f083ad98ef9d3b93e6edb4da0074f33317cc1
--
View it on GitLab:
https://code.videolan.org/videolan/libbluray/commit/000f083ad98ef9d3b93e6edb4da0074f33317cc1
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