src/chapters.c

   1 /*****************************************************************************
   2  * chapters.c:
   3  *****************************************************************************
   4  * Copyright (C) 2007 libmkv
   5  * $Id: $
   6  *
   7  * Authors: Nathan Caldwell
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23 #include "libmkv.h"
  24 #include "matroska.h"
  25 #include "config.h"
  26
  27 int   mk_createChapterSimple(mk_Writer *w, uint64_t start, uint64_t end, char *name)
  28 {
  29   mk_Context *ca, *cd;
  30
  31   if (w->chapters == NULL)
  32   {
  33     if ((w->chapters = mk_createContext(w, w->root, 0x1043a770)) == NULL) // Chapters
  34       return -1;
  35     if ((w->edition_entry = mk_createContext(w, w->chapters, 0x45b9)) == NULL) // EditionEntry
  36       return -1;
  37     CHECK(mk_writeUInt(w->edition_entry, 0x45db, 1)); // EditionFlagDefault - Force this to be the default.
  38     CHECK(mk_writeUInt(w->edition_entry, 0x45dd, 0)); // EditionFlagOrdered - Force simple chapters.
  39   }
  40   if ((ca = mk_createContext(w, w->edition_entry, 0xb6)) == NULL) // ChapterAtom
  41     return -1;
  42   CHECK(mk_writeUInt(ca, 0x73c4, ++w->chapter_uid));
  43   CHECK(mk_writeUInt(ca, 0x91, start)); // ChapterTimeStart
  44   if (end != start)                     // Just create a StartTime if chapter length would be 0.
  45     CHECK(mk_writeUInt(ca, 0x92, end)); // ChapterTimeEnd
  46   if (name != NULL) {
  47     if ((cd = mk_createContext(w, ca, 0x80)) == NULL) // ChapterDisplay
  48       return -1;
  49     CHECK(mk_writeStr(cd, 0x85, name)); // ChapterDisplay
  50     CHECK(mk_closeContext(cd, 0));
  51   }
  52   CHECK(mk_closeContext(ca, 0));
  53
  54   return 0;
  55 }
  56
  57 int   mk_writeChapters(mk_Writer *w) {
  58   if ((w->chapters == NULL) || (w->edition_entry == NULL))
  59     return -1;
  60   CHECK(mk_closeContext(w->edition_entry, 0));
  61   CHECK(mk_closeContext(w->chapters, 0));
  62
  63   return 0;
  64 }