src/ebml.h

   1 /*****************************************************************************
   2  * ebml.h:
   3  *****************************************************************************
   4  * Copyright (C) 2005 x264 project
   5  * $Id: $
   6  *
   7  * Authors: Mike Matsnev
   8  *          Nathan Caldwell
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24 #ifndef _EBML_H
  25 #define _EBML_H 1
  26
  27 /* Copied from ffmpeg */
  28 /* EBML version supported */
  29 #define EBML_VERSION 1
  30
  31 /* top-level master-IDs */
  32 #define EBML_ID_HEADER              0x1A45DFA3      /* sub-elements */
  33
  34 /* IDs in the HEADER master */
  35 #define EBML_ID_EBMLVERSION         0x4286          /* u-integer */
  36 #define EBML_ID_EBMLREADVERSION     0x42F7          /* u-integer */
  37 #define EBML_ID_EBMLMAXIDLENGTH     0x42F2          /* u-integer */
  38 #define EBML_ID_EBMLMAXSIZELENGTH   0x42F3          /* u-integer */
  39 #define EBML_ID_DOCTYPE             0x4282          /* string */
  40 #define EBML_ID_DOCTYPEVERSION      0x4287          /* u-integer */
  41 #define EBML_ID_DOCTYPEREADVERSION  0x4285          /* u-integer */
  42
  43 /* general EBML types */
  44 #define EBML_ID_VOID                0xEC            /* binary */
  45 /* Above copied from ffmpeg */
  46
  47 typedef struct mk_Context_s mk_Context;
  48
  49 struct mk_Context_s {
  50     mk_Context *next, **prev, *parent;
  51     mk_Writer  *owner;
  52     unsigned      id;
  53
  54     void          *data;
  55     unsigned      d_cur, d_max;
  56 };
  57
  58 /* Contexts */
  59 mk_Context *mk_createContext(mk_Writer *w, mk_Context *parent, unsigned id);
  60 int         mk_appendContextData(mk_Context *c, const void *data, uint64_t size);
  61 int         mk_flushContextID(mk_Context *c);
  62 int         mk_flushContextData(mk_Context *c);
  63 int         mk_closeContext(mk_Context *c, int64_t *off);
  64 void        mk_destroyContexts(mk_Writer *w);
  65 /* Contexts */
  66
  67 /* EBML */
  68 int         mk_writeID(mk_Context *c, unsigned id);
  69 int         mk_writeSize(mk_Context *c, uint64_t size);
  70 int         mk_writeSSize(mk_Context *c, int64_t size);
  71 int         mk_writeStr(mk_Context *c, unsigned id, const char *str);
  72 int         mk_writeBin(mk_Context *c, unsigned id, const void *data, unsigned size);
  73 int         mk_writeUInt(mk_Context *c, unsigned id, uint64_t ui);
  74 int         mk_writeSInt(mk_Context *c, unsigned id, int64_t si);
  75 int         mk_writeFloatRaw(mk_Context *c, float f);
  76 int         mk_writeFloat(mk_Context *c, unsigned id, float f);
  77 int         mk_writeVoid(mk_Context *c, uint64_t length);
  78 unsigned    mk_ebmlSizeSize(uint64_t s);
  79 unsigned    mk_ebmlSIntSize(int64_t si);
  80 int         mk_writeEbmlHeader(mk_Writer *w, const char * doctype, uint64_t doctype_version, uint64_t doctype_readversion );
  81 /* EBML */
  82
  83 #endif /* _EBML_H */