1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2007 libmkv
6 * Authors: Nathan Caldwell
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
26 int mk_createChapterSimple(mk_Writer
*w
, uint64_t start
, uint64_t end
,
30 unsigned long chapter_uid
;
33 * Generate a random UID for this Chapter.
34 * NOTE: This probably should be a CRC32 of some unique chapter information.
35 * In place of being completely random.
37 chapter_uid
= random();
39 if (w
->chapters
== NULL
) {
40 unsigned long edition_uid
;
41 edition_uid
= random();
44 if ((w
->chapters
= mk_createContext(w
, w
->root
, MATROSKA_ID_CHAPTERS
)) == NULL
)
47 if ((w
->edition_entry
= mk_createContext(w
, w
->chapters
, MATROSKA_ID_EDITIONENTRY
)) == NULL
)
49 /* EditionUID - See note above about Chapter UID. */
50 CHECK(mk_writeUInt(w
->edition_entry
, MATROSKA_ID_EDITIONUID
, edition_uid
));
51 /* EditionFlagDefault - This is set to 1 to force this Edition to be the default one. */
52 CHECK(mk_writeUInt(w
->edition_entry
, MATROSKA_ID_EDITIONFLAGDEFAULT
, 1));
53 /* EditionFlagOrdered - Force simple chapters. */
54 CHECK(mk_writeUInt(w
->edition_entry
, MATROSKA_ID_EDITIONFLAGORDERED
, 0));
57 if ((ca
= mk_createContext(w
, w
->edition_entry
, MATROSKA_ID_CHAPTERATOM
)) == NULL
)
59 CHECK(mk_writeUInt(ca
, MATROSKA_ID_CHAPTERUID
, chapter_uid
)); /* ChapterUID */
60 CHECK(mk_writeUInt(ca
, MATROSKA_ID_CHAPTERTIMESTART
, start
)); /* ChapterTimeStart */
61 if (end
!= start
) /* Only create a StartTime if chapter length would be 0. */
62 CHECK(mk_writeUInt(ca
, MATROSKA_ID_CHAPTERTIMEEND
, end
)); /* ChapterTimeEnd */
65 if ((cd
= mk_createContext(w
, ca
, MATROSKA_ID_CHAPTERDISPLAY
)) == NULL
)
67 CHECK(mk_writeStr(cd
, MATROSKA_ID_CHAPTERSTRING
, name
)); /* ChapterString */
68 CHECK(mk_closeContext(cd
, 0));
70 CHECK(mk_closeContext(ca
, 0));
75 int mk_writeChapters(mk_Writer
*w
)
77 if ((w
->chapters
== NULL
) || (w
->edition_entry
== NULL
))
79 CHECK(mk_closeContext(w
->edition_entry
, 0));
80 CHECK(mk_closeContext(w
->chapters
, 0));