[libbluray-devel] id.bdmv loader

[hpi1]

libbluray | branch: master | hpi1 <hpi1 at anonymous.org> | Mon Aug 20 23:02:07 2012 +0300| [26a552fbc0c022a3755dd2eba2d7881f8e8ff35b] | committer: hpi1

id.bdmv loader

> http://git.videolan.org/gitweb.cgi/libbluray.git/?a=commit;h=26a552fbc0c022a3755dd2eba2d7881f8e8ff35b
---

 src/Makefile.am                  |    2 +
 src/libbluray/bdnav/bdid_parse.c |  121 ++++++++++++++++++++++++++++++++++++++
 src/libbluray/bdnav/bdid_parse.h |   36 ++++++++++++
 3 files changed, 159 insertions(+)

diff --git a/src/Makefile.am b/src/Makefile.am
index f68db55..58d71c2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -48,6 +48,8 @@ libbluray_la_SOURCES=libbluray/bluray.h \
 	libbluray/bdnav/meta_data.h \
 	libbluray/bdnav/meta_parse.c \
 	libbluray/bdnav/meta_parse.h \
+	libbluray/bdnav/bdid_parse.h \
+	libbluray/bdnav/bdid_parse.c \
 	libbluray/decoders \
 	libbluray/decoders/pes_buffer.h \
 	libbluray/decoders/pes_buffer.c \
diff --git a/src/libbluray/bdnav/bdid_parse.c b/src/libbluray/bdnav/bdid_parse.c
new file mode 100644
index 0000000..e3cfd9a
--- /dev/null
+++ b/src/libbluray/bdnav/bdid_parse.c
@@ -0,0 +1,121 @@
+/*
+ * This file is part of libbluray
+ * Copyright (C) 2012  Petri Hintukainen <phintuka at users.sourceforge.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "file/file.h"
+#include "util/bits.h"
+#include "util/logging.h"
+#include "util/macro.h"
+#include "bdid_parse.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#define BDID_SIG1  ('B' << 24 | 'D' << 16 | 'I' << 8 | 'D')
+#define BDID_SIG2A ('0' << 24 | '2' << 16 | '0' << 8 | '0')
+#define BDID_SIG2B ('0' << 24 | '1' << 16 | '0' << 8 | '0')
+
+static int _parse_header(BITSTREAM *bs, uint32_t *data_start, uint32_t *extension_data_start)
+{
+    uint32_t sig1, sig2;
+
+    bs_seek_byte(bs, 0);
+
+    sig1 = bs_read(bs, 32);
+    sig2 = bs_read(bs, 32);
+
+    if (sig1 != BDID_SIG1 ||
+       (sig2 != BDID_SIG2A &&
+        sig2 != BDID_SIG2B)) {
+       BD_DEBUG(DBG_NAV | DBG_CRIT, "id.bdmv failed signature match: expected BDID0100 got %8.8s\n", bs->buf);
+       return 0;
+    }
+
+    *data_start           = bs_read(bs, 32);
+    *extension_data_start = bs_read(bs, 32);
+
+    return 1;
+}
+
+static BDID_DATA *_bdid_parse(const char *file_name)
+{
+    BITSTREAM  bs;
+    BD_FILE_H *fp;
+    BDID_DATA *bdid = NULL;
+
+    uint32_t   data_start, extension_data_start;
+    uint8_t    tmp[16];
+
+    fp = file_open(file_name, "rb");
+    if (!fp) {
+        BD_DEBUG(DBG_NAV | DBG_CRIT, "bdid_parse(): error opening %s\n", file_name);
+        return NULL;
+    }
+
+    bs_init(&bs, fp);
+
+    if (!_parse_header(&bs, &data_start, &extension_data_start)) {
+        BD_DEBUG(DBG_NAV | DBG_CRIT, "id.bdmv: invalid header\n");
+        goto error;
+    }
+
+    bdid = calloc(1, sizeof(BDID_DATA));
+
+    bs_seek_byte(&bs, 40);
+
+    bs_read_bytes(&bs, tmp, 4);
+    print_hex(bdid->org_id, tmp, 4);
+
+    bs_read_bytes(&bs, tmp, 16);
+    print_hex(bdid->disc_id, tmp, 16);
+
+    file_close(fp);
+    return bdid;
+
+ error:
+    X_FREE(bdid);
+    file_close(fp);
+    return NULL;
+}
+
+BDID_DATA *bdid_parse(const char *file_name)
+{
+    BDID_DATA *bdid = _bdid_parse(file_name);
+
+    /* if failed, try backup file */
+    if (!bdid) {
+        int   len    = strlen(file_name);
+        char *backup = malloc(len + 8);
+
+        strcpy(backup, file_name);
+        strcpy(backup + len - 7, "BACKUP/id.bdmv");
+
+        bdid = _bdid_parse(backup);
+
+        X_FREE(backup);
+    }
+
+    return bdid;
+}
+
+void bdid_free(BDID_DATA **p)
+{
+    if (p && *p) {
+        X_FREE(*p);
+    }
+}
diff --git a/src/libbluray/bdnav/bdid_parse.h b/src/libbluray/bdnav/bdid_parse.h
new file mode 100644
index 0000000..ee0999e
--- /dev/null
+++ b/src/libbluray/bdnav/bdid_parse.h
@@ -0,0 +1,36 @@
+/*
+ * This file is part of libbluray
+ * Copyright (C) 2012  Petri Hintukainen <phintuka at users.sourceforge.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#if !defined(_BDID_PARSE_H_)
+#define _BDID_PARSE_H_
+
+#include <util/attributes.h>
+
+#include <stdint.h>
+
+typedef struct bdid_s {
+    char org_id[9];
+    char disc_id[33];
+} BDID_DATA;
+
+
+BD_PRIVATE BDID_DATA* bdid_parse(const char *path); /* parse id.bdmv */
+BD_PRIVATE void       bdid_free(BDID_DATA **p);
+
+#endif // _BDID_PARSE_H_