From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- third_party/jpeg-xl/lib/jxl/huffman_table.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 third_party/jpeg-xl/lib/jxl/huffman_table.h (limited to 'third_party/jpeg-xl/lib/jxl/huffman_table.h') 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 +#include + +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_ -- cgit v1.2.3