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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/jpeg-xl/lib/jxl/huffman_table.h | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/jpeg-xl/lib/jxl/huffman_table.h')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/huffman_table.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/huffman_table.h b/third_party/jpeg-xl/lib/jxl/huffman_table.h new file mode 100644 index 0000000000..11cdb2fc45 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/huffman_table.h @@ -0,0 +1,28 @@ +// Copyright (c) the JPEG XL Project Authors. All rights reserved. +// +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#ifndef LIB_JXL_HUFFMAN_TABLE_H_ +#define LIB_JXL_HUFFMAN_TABLE_H_ + +#include <stdint.h> +#include <stdlib.h> + +namespace jxl { + +struct HuffmanCode { + uint8_t bits; /* number of bits used for this symbol */ + uint16_t value; /* symbol value or table offset */ +}; + +/* Builds Huffman lookup table assuming code lengths are in symbol order. */ +/* Returns 0 in case of error (invalid tree or memory error), otherwise + populated size of table. */ +uint32_t BuildHuffmanTable(HuffmanCode* root_table, int root_bits, + const uint8_t* code_lengths, + size_t code_lengths_size, uint16_t* count); + +} // namespace jxl + +#endif // LIB_JXL_HUFFMAN_TABLE_H_ |