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Clean project structure.

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jmsgrogan 2023-01-17 10:13:25 +00:00
parent 78a4fa99ff
commit 947bf937fd
496 changed files with 206 additions and 137 deletions
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56
src/compression/huffman/HuffmanCodeLengthTable.h
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#pragma once
#include "HuffmanTree.h"
#include <vector>
#include <string>
#include <optional>
class BitStream;
class HuffmanCodeLengthTable
{
public:
void buildPrefixCodes();
void buildCompressedLengthSequence();
std::string dumpPrefixCodes() const;
std::optional<HuffmanTree::Symbol> findMatch(std::size_t treeIndex, uint32_t code) const;
const HuffmanTree& getTree() const;
const PrefixCode& getCode(std::size_t index) const;
std::optional<PrefixCode> getCodeForSymbol(unsigned symbol) const;
using CompressedSequenceEntry = std::pair<unsigned, unsigned>;
const std::vector<CompressedSequenceEntry>& getCompressedLengthSequence() const;
const std::vector<std::size_t> getCompressedLengthCounts() const;
std::size_t getNumCodeLengths() const;
unsigned getCodeLength(std::size_t treeIndex) const;
std::size_t mapToDeflateIndex(std::size_t index) const;
void setInputLengthSequence(const std::vector<unsigned char>& sequence, bool targetDeflate = true);
bool readNextSymbol(unsigned& buffer, BitStream* stream);
private:
HuffmanTree mTree;
bool mTargetDeflate{true};
std::vector<unsigned char> mInputLengthSequence;
std::vector<PrefixCode> mCodes;
std::vector<CompressedSequenceEntry> mCompressedLengthSequence;
std::vector<std::size_t> mCompressedLengthCounts;
static constexpr unsigned DEFLATE_PERMUTATION_SIZE{19};
static constexpr unsigned DEFLATE_PERMUTATION[DEFLATE_PERMUTATION_SIZE]{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
};