diff options
author | Jan Ekström <jan.ekstrom@24i.com> | 2021-02-24 14:19:28 +0200 |
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committer | Jan Ekström <jeebjp@gmail.com> | 2021-08-25 09:26:46 +0300 |
commit | 460beb948ceddeb86bd2b3b17335176adcaa7223 (patch) | |
tree | f33e2d08e979a917ab042b6954e6619f0f061c5f /libavformat/ttmlenc.h | |
parent | 94653e0dee8d2efa85087e28249249cb3fde3d71 (diff) |
avformat/ttml: split TTML paragraph based or not check into header
This way it can be re-utilized in movenc.
Signed-off-by: Jan Ekström <jan.ekstrom@24i.com>
Diffstat (limited to 'libavformat/ttmlenc.h')
-rw-r--r-- | libavformat/ttmlenc.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libavformat/ttmlenc.h b/libavformat/ttmlenc.h new file mode 100644 index 0000000000..5a6954f3c1 --- /dev/null +++ b/libavformat/ttmlenc.h @@ -0,0 +1,39 @@ +/* + * 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 */ |