modules/demux/mp4/languages.h

   1 /*****************************************************************************
   2  * languages.h: Quicktime language codes and ISO-639-2/T conversion
   3  *****************************************************************************
   4  * Copyright (C) 2014 VLC authors and VideoLAN
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20 #ifndef VLC_MP4_LANGUAGES_H_
  21 #define VLC_MP4_LANGUAGES_H_
  22
  23 static bool decodeQtLanguageCode( uint16_t i_language_code, char *psz_iso,
  24                                   bool *b_mactables )
  25 {
  26     static const char * psz_qt_to_iso639_2T_lower =
  27             "eng"    "fra"    "deu"    "ita"    "nld"
  28             "swe"    "spa"    "dan"    "por"    "nor" /* 5-9 */
  29             "heb"    "jpn"    "ara"    "fin"    "gre"
  30             "isl"    "mlt"    "tur"    "hrv"    "zho" /* 15-19 */
  31             "urd"    "hin"    "tha"    "kor"    "lit"
  32             "pol"    "hun"    "est"    "lav"    "sme" /* 25-29 */
  33             "fao"    "fas"    "rus"    "zho"    "nld" /* nld==flemish */
  34             "gle"    "sqi"    "ron"    "ces"    "slk" /* 35-39 */
  35             "slv"    "yid"    "srp"    "mkd"    "bul"
  36             "ukr"    "bel"    "uzb"    "kaz"    "aze" /* 45-49 */
  37             "aze"    "hye"    "kat"    "mol"    "kir"
  38             "tgk"    "tuk"    "mon"    "mon"    "pus" /* 55-59 */
  39             "kur"    "kas"    "snd"    "bod"    "nep"
  40             "san"    "mar"    "ben"    "asm"    "guj" /* 65-69 */
  41             "pan"    "ori"    "mal"    "kan"    "tam"
  42             "tel"    "sin"    "mya"    "khm"    "lao" /* 75-79 */
  43             "vie"    "ind"    "tgl"    "msa"    "msa"
  44             "amh"    "tir"    "orm"    "som"    "swa" /* 85-89 */
  45             "kin"    "run"    "nya"    "mlg"    "epo" /* 90-94 */
  46             ;
  47
  48     static const char * psz_qt_to_iso639_2T_upper =
  49             "cym"    "eus"    "cat"    "lat"    "que" /* 128-132 */
  50             "grn"    "aym"    "tat"    "uig"    "dzo"
  51             "jaw"    "sun"    "glg"    "afr"    "bre" /* 138-142 */
  52             "iku"    "gla"    "glv"    "gle"    "ton"
  53             "gre"                                     /* 148 */
  54             ;
  55
  56     if ( i_language_code < 0x400 || i_language_code == 0x7FFF )
  57     {
  58         const void *p_data;
  59         *b_mactables = true;
  60         if ( i_language_code <= 94 )
  61         {
  62             p_data = psz_qt_to_iso639_2T_lower + i_language_code * 3;
  63         }
  64         else if ( i_language_code >= 128 && i_language_code <= 148 )
  65         {
  66             i_language_code -= 128;
  67             p_data = psz_qt_to_iso639_2T_upper + i_language_code * 3;
  68         }
  69         else
  70             return false;
  71         memcpy( psz_iso, p_data, 3 );
  72     }
  73     else
  74     {
  75         *b_mactables = false;
  76         /*
  77          * to build code: ( ( 'f' - 0x60 ) << 10 ) | ( ('r' - 0x60) << 5 ) | ('a' - 0x60)
  78          */
  79         if( i_language_code == 0x55C4 ) /* "und" */
  80         {
  81             memset( psz_iso, 0, 3 );
  82             return false;
  83         }
  84
  85         for( unsigned i = 0; i < 3; i++ )
  86             psz_iso[i] = ( ( i_language_code >> ( (2-i)*5 ) )&0x1f ) + 0x60;
  87     }
  88     return true;
  89 }
  90
  91 #endif