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72 lines
2.3 KiB
72 lines
2.3 KiB
/* |
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* JPEG XL Header Parser |
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* Copyright (c) 2023 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 AVCODEC_JPEGXL_PARSE_H |
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#define AVCODEC_JPEGXL_PARSE_H |
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#include <stdint.h> |
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#include "libavutil/rational.h" |
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#include "jpegxl.h" |
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typedef struct FFJXLMetadata { |
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uint32_t width; |
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uint32_t height; |
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uint32_t coded_width; |
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uint32_t coded_height; |
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int bit_depth; |
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int have_alpha; |
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/* |
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* offset, in bits, of the animation header |
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* zero if not animated |
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*/ |
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int animation_offset; |
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AVRational timebase; |
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FFJXLColorSpace csp; |
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FFJXLWhitePoint wp; |
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FFJXLPrimaries primaries; |
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FFJXLTransferCharacteristic trc; |
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/* used by the parser */ |
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int xyb_encoded; |
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int have_icc_profile; |
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int have_timecodes; |
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uint32_t num_extra_channels; |
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} FFJXLMetadata; |
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/* |
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* copies as much of the codestream into the buffer as possible |
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* pass a shorter buflen to request less |
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* returns the number of bytes consumed from input, may be greater than input_len |
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* if the input doesn't end on an ISOBMFF-box boundary |
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*/ |
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int ff_jpegxl_collect_codestream_header(const uint8_t *input_buffer, int input_len, |
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uint8_t *buffer, int buflen, int *copied); |
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/* |
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* Parse the codestream header with the provided buffer. Returns negative upon failure, |
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* or the number of bits consumed upon success. |
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* The FFJXLMetadata parameter may be NULL, in which case it's ignored. |
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*/ |
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int ff_jpegxl_parse_codestream_header(const uint8_t *buf, int buflen, FFJXLMetadata *meta, int validate); |
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#endif /* AVCODEC_JPEGXL_PARSE_H */
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