mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-24 12:09:55 +00:00
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*
|
|
* 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 */
|