| /* |
| * 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 */ |
