26 lines
837 B
C++
26 lines
837 B
C++
// Copyright (c) the JPEG XL Project Authors. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#ifndef LIB_JXL_ENC_HUFFMAN_H_
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#define LIB_JXL_ENC_HUFFMAN_H_
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#include <cstddef>
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#include <cstdint>
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#include "lib/jxl/base/status.h"
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#include "lib/jxl/enc_bit_writer.h"
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namespace jxl {
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// Builds a Huffman tree for the given histogram, and encodes it into writer
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// in a format that can be read by HuffmanDecodingData::ReadFromBitstream.
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// An allotment for `writer` must already have been created by the caller.
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Status BuildAndStoreHuffmanTree(const uint32_t* histogram, size_t length,
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uint8_t* depth, uint16_t* bits,
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BitWriter* writer);
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} // namespace jxl
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#endif // LIB_JXL_ENC_HUFFMAN_H_
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