mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
1.4 KiB
39 lines
1.4 KiB
/* |
|
* Generic TTML helpers |
|
* Copyright (c) 2021 24i |
|
* |
|
* 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 AVFORMAT_TTMLENC_H |
|
#define AVFORMAT_TTMLENC_H |
|
|
|
#include "libavcodec/codec_par.h" |
|
#include "libavcodec/ttmlenc.h" |
|
|
|
static inline unsigned int ff_is_ttml_stream_paragraph_based(const AVCodecParameters *codecpar) |
|
{ |
|
// Not perfect, but decide whether the packet is a document or not |
|
// by the existence of the lavc ttmlenc extradata. |
|
return (codecpar->extradata && |
|
codecpar->extradata_size >= TTMLENC_EXTRADATA_SIGNATURE_SIZE && |
|
!memcmp(codecpar->extradata, |
|
TTMLENC_EXTRADATA_SIGNATURE, |
|
TTMLENC_EXTRADATA_SIGNATURE_SIZE)); |
|
} |
|
|
|
#endif /* AVFORMAT_TTMLENC_H */
|
|
|