33 lines
999 B
C++
33 lines
999 B
C++
// File: lzham_huffman_codes.h
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// See Copyright Notice and license at the end of include/lzham.h
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#pragma once
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namespace lzham
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{
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//const uint cHuffmanMaxSupportedSyms = 600;
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const uint cHuffmanMaxSupportedSyms = 1024;
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const uint cMaxExpectedHuffCodeSize = 16;
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struct code_size_histogram
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{
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enum { cMaxUnlimitedHuffCodeSize = 32 };
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uint m_num_codes[cMaxUnlimitedHuffCodeSize + 1];
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void clear() { utils::zero_object(m_num_codes); }
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void init(uint num_syms, const uint8* pCodesizes);
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inline void init(uint code_size0, uint total_syms0, uint code_size1, uint total_syms1)
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{
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m_num_codes[code_size0] += total_syms0;
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m_num_codes[code_size1] += total_syms1;
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}
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};
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uint get_generate_huffman_codes_table_size();
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bool generate_huffman_codes(void* pContext, uint num_syms, const uint16* pFreq, uint8* pCodesizes, uint& max_code_size, uint& total_freq_ret, code_size_histogram &code_size_hist);
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} // namespace lzham
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