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// 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 <memory>
#include <vector>
#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<HuffmanCode> table_;
};
} // namespace jxl
#endif // LIB_JXL_DEC_HUFFMAN_H_
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