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Animated JPEG XL files requires a separate demuxer than image2, because the timebase information is set by the demuxer. Should the timebase of an animated JPEG XL file be incompatible with the timebase set by the image2pipe demuxer (usually 1/25 unless set otherwise), rescaling will fail. Adding a separate demuxer for animated JPEG XL files allows the timebase to be set correctly. Signed-off-by: Leo Izen <leo.izen@gmail.com>
38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/*
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* Jpeg XL header verification
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* Copyright (c) 2022 Leo Izen <leo.izen@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_JPEGXL_PROBE_H
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#define AVFORMAT_JPEGXL_PROBE_H
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#include <stdint.h>
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#define FF_JPEGXL_CODESTREAM_SIGNATURE_LE 0x0aff
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#define FF_JPEGXL_CONTAINER_SIGNATURE_LE 0x204c584a0c000000
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/**
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* @brief verify that a codestream header is valid
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* @return Negative upon error, 0 upon verifying that the codestream is not animated,
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* and 1 upon verifying that it is animated
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*/
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int ff_jpegxl_verify_codestream_header(const uint8_t *buf, int buflen, int validate_level);
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#endif /* AVFORMAT_JPEGXL_PROBE_H */
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