/*
  * DVB teletext common functions.
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVCODEC_DVBTXT_H
 #define AVCODEC_DVBTXT_H
 
 #include "libavutil/attributes.h"
 
 /* Returns true if data identifier matches a teletext stream according to EN
  * 301 775 section 4.4.2 */
 static av_always_inline int ff_data_identifier_is_teletext(int data_identifier)
 {
     return (data_identifier >= 0x10 && data_identifier <= 0x1F ||
             data_identifier >= 0x99 && data_identifier <= 0x9B);
 }
 
 /* Returns true if data unit id matches EBU teletext data according to
  * EN 301 775 section 4.4.2 */
 static av_always_inline int ff_data_unit_id_is_teletext(int data_unit_id)
 {
     return (data_unit_id == 0x02 || data_unit_id == 0x03);
 }
 
 #endif /* AVCODEC_DVBTXT_H */