From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/jpeg-xl/lib/jxl/dec_huffman.h | 32 +++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 third_party/jpeg-xl/lib/jxl/dec_huffman.h (limited to 'third_party/jpeg-xl/lib/jxl/dec_huffman.h') diff --git a/third_party/jpeg-xl/lib/jxl/dec_huffman.h b/third_party/jpeg-xl/lib/jxl/dec_huffman.h new file mode 100644 index 0000000000..162c3e309c --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/dec_huffman.h @@ -0,0 +1,32 @@ +// 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_DEC_HUFFMAN_H_ +#define LIB_JXL_DEC_HUFFMAN_H_ + +#include +#include + +#include "lib/jxl/dec_bit_reader.h" +#include "lib/jxl/huffman_table.h" + +namespace jxl { + +static constexpr size_t kHuffmanTableBits = 8u; + +struct HuffmanDecodingData { + // Decodes the Huffman code lengths from the bit-stream and fills in the + // pre-allocated table with the corresponding 2-level Huffman decoding table. + // Returns false if the Huffman code lengths can not de decoded. + bool ReadFromBitStream(size_t alphabet_size, BitReader* br); + + uint16_t ReadSymbol(BitReader* br) const; + + std::vector table_; +}; + +} // namespace jxl + +#endif // LIB_JXL_DEC_HUFFMAN_H_ -- cgit v1.2.3