94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
#pragma once
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#include<string>
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#include "defines.h"
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namespace Utils {
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class bitstream {
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public:
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bitstream();
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bitstream & operator<< (std::string input) {
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append(input);
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return *this;
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};
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bitstream & operator<< (char input) {
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append(std::string(input, 1));
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return *this;
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};
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void append(const char * input, size_t bytes);
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void append(const std::string & input);
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long long unsigned int size();
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void skip(size_t count);
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long long unsigned int get(size_t count);
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long long unsigned int peek(size_t count);
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bool peekOffset(size_t peekOffset);
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void flush();
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void clear();
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long long int getExpGolomb();
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long long unsigned int getUExpGolomb();
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long long int peekExpGolomb();
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long long unsigned int peekUExpGolomb();
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static size_t bitSizeUExpGolomb(size_t value){
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size_t i = 1;
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size_t power = 2;
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while (power - 2 < value){
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i+= 2;
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power *= 2;
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}
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return i;
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}
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private:
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bool checkBufferSize(unsigned int size);
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long long unsigned int golombGetter();
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long long unsigned int golombPeeker();
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char * data;
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size_t offset;
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size_t dataSize;
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size_t bufferSize;
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};
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class bitWriter {
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public:
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bitWriter();
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~bitWriter();
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size_t size();
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void append(uint64_t value, size_t bitLength);
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void appendExpGolomb(uint64_t value);
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void appendUExpGolomb(uint64_t value);
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static size_t UExpGolombEncodedSize(uint64_t value);
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std::string str() { return std::string(dataBuffer, (dataSize / 8) + (dataSize % 8 ? 1 : 0)); }
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protected:
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void reallocate(size_t newSize);
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void appendData(uint8_t data, size_t len);
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char * dataBuffer;
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//NOTE: ALL SIZES IN BITS!
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size_t bufferSize;
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size_t dataSize;
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};
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class bitstreamLSBF {
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public:
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bitstreamLSBF();
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bitstreamLSBF & operator<< (std::string input) {
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append(input);
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return *this;
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};
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void append(char * input, size_t bytes);
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void append(std::string & input);
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long long unsigned int size();
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void skip(size_t count);
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long long unsigned int get(size_t count);
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long long unsigned int peek(size_t count);
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void clear();
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std::string data;
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private:
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long long unsigned int readBuffer;
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unsigned int readBufferOffset;
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void fixData();
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};
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}
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