mirror of https://git.ffmpeg.org/ffmpeg.git
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
|
|
* 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 */
|