This way it can be re-utilized in movenc.
Unified · Split
| @@ -30,6 +30,7 @@ · 29 unmodified lines | ||
| 30 | 30 | #include "libavutil/avstring.h" |
| 31 | 31 | #include "avformat.h" |
| 32 | 32 | #include "internal.h" |
| 33 | +#include "ttmlenc.h" | |
| 33 | 34 | #include "libavcodec/ttmlenc.h" |
| 34 | 35 | #include "libavutil/internal.h" |
| 35 | 36 | |
| @@ -138,13 +139,7 @@ static int ttml_write_header(AVFormatContext *ctx) · 102 unmodified lines | ||
| 138 | 139 | 0); |
| 139 | 140 | const char *printed_lang = (lang && lang->value) ? lang->value : ""; |
| 140 | 141 | |
| 141 | − // Not perfect, but decide whether the packet is a document or not | |
| 142 | − // by the existence of the lavc ttmlenc extradata. | |
| 143 | − ttml_ctx->input_type = (st->codecpar->extradata && | |
| 144 | − st->codecpar->extradata_size >= TTMLENC_EXTRADATA_SIGNATURE_SIZE && | |
| 145 | − !memcmp(st->codecpar->extradata, | |
| 146 | − TTMLENC_EXTRADATA_SIGNATURE, | |
| 147 | − TTMLENC_EXTRADATA_SIGNATURE_SIZE)) ? | |
| 142 | + ttml_ctx->input_type = ff_is_ttml_stream_paragraph_based(st->codecpar) ? | |
| 148 | 143 | PACKET_TYPE_PARAGRAPH : |
| 149 | 144 | PACKET_TYPE_DOCUMENT; |
| 150 | 145 | |
| @@ -0,0 +1,39 @@ | ||
| 1 | +/* | |
| 2 | + * Generic TTML helpers | |
| 3 | + * Copyright (c) 2021 24i | |
| 4 | + * | |
| 5 | + * This file is part of FFmpeg. | |
| 6 | + * | |
| 7 | + * FFmpeg is free software; you can redistribute it and/or | |
| 8 | + * modify it under the terms of the GNU Lesser General Public | |
| 9 | + * License as published by the Free Software Foundation; either | |
| 10 | + * version 2.1 of the License, or (at your option) any later version. | |
| 11 | + * | |
| 12 | + * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | + * Lesser General Public License for more details. | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU Lesser General Public | |
| 18 | + * License along with FFmpeg; if not, write to the Free Software | |
| 19 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | + */ | |
| 21 | + | |
| 22 | +#ifndef AVFORMAT_TTMLENC_H | |
| 23 | +#define AVFORMAT_TTMLENC_H | |
| 24 | + | |
| 25 | +#include "libavcodec/codec_par.h" | |
| 26 | +#include "libavcodec/ttmlenc.h" | |
| 27 | + | |
| 28 | +static inline unsigned int ff_is_ttml_stream_paragraph_based(const AVCodecParameters *codecpar) | |
| 29 | +{ | |
| 30 | + // Not perfect, but decide whether the packet is a document or not | |
| 31 | + // by the existence of the lavc ttmlenc extradata. | |
| 32 | + return (codecpar->extradata && | |
| 33 | + codecpar->extradata_size >= TTMLENC_EXTRADATA_SIGNATURE_SIZE && | |
| 34 | + !memcmp(codecpar->extradata, | |
| 35 | + TTMLENC_EXTRADATA_SIGNATURE, | |
| 36 | + TTMLENC_EXTRADATA_SIGNATURE_SIZE)); | |
| 37 | +} | |
| 38 | + | |
| 39 | +#endif /* AVFORMAT_TTMLENC_H */ | |