src/ebml.h

   1 /*****************************************************************************
   2  * ebml.h:
   3  *****************************************************************************
   4  * Copyright (C) 2005 x264 project
   5  *
   6  * Authors: Mike Matsnev
   7  *          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 #ifndef _EBML_H
  24 #define _EBML_H 1
  25
  26 /* Copied from ffmpeg */
  27 /* EBML version supported */
  28 #define EBML_VERSION 1
  29
  30 /* top-level master-IDs */
  31 #define EBML_ID_HEADER              0x1A45DFA3  /* sub-elements */
  32
  33 /* IDs in the HEADER master */
  34 #define EBML_ID_EBMLVERSION         0x4286      /* u-integer */
  35 #define EBML_ID_EBMLREADVERSION     0x42F7      /* u-integer */
  36 #define EBML_ID_EBMLMAXIDLENGTH     0x42F2      /* u-integer */
  37 #define EBML_ID_EBMLMAXSIZELENGTH   0x42F3      /* u-integer */
  38 #define EBML_ID_DOCTYPE             0x4282      /* string */
  39 #define EBML_ID_DOCTYPEVERSION      0x4287      /* u-integer */
  40 #define EBML_ID_DOCTYPEREADVERSION  0x4285      /* u-integer */
  41
  42 /* general EBML types */
  43 #define EBML_ID_VOID                0xEC        /* binary */
  44 /* Above copied from ffmpeg */
  45
  46 typedef struct mk_Context_s mk_Context;
  47
  48 struct mk_Context_s {
  49         mk_Context *next, **prev, *parent;
  50         mk_Writer *owner;
  51         unsigned id;
  52
  53         void *data;
  54         unsigned d_cur, d_max;
  55 };
  56
  57 /* Contexts */
  58 mk_Context *mk_createContext(mk_Writer *w, mk_Context *parent,
  59                                                          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,
  73                                 unsigned size);
  74 int mk_writeUInt(mk_Context *c, unsigned id, uint64_t ui);
  75 int mk_writeSInt(mk_Context *c, unsigned id, int64_t si);
  76 int mk_writeFloatRaw(mk_Context *c, float f);
  77 int mk_writeFloat(mk_Context *c, unsigned id, float f);
  78 int mk_writeVoid(mk_Context *c, uint64_t length);
  79 unsigned mk_ebmlSizeSize(uint64_t s);
  80 unsigned mk_ebmlSIntSize(int64_t si);
  81 unsigned mk_ebmlUIntSize(uint64_t ui);
  82 int mk_writeEbmlHeader(mk_Writer *w, const char *doctype,
  83                                            uint64_t doctype_version,
  84                                            uint64_t doctype_readversion);
  85 /* EBML */
  86
  87 #endif                                                  /* _EBML_H */