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#pragma once
#include <vector>
#include <iostream>
namespace NBitStream {
static inline int MakeSign(int val, unsigned bits) {
unsigned shift = 8 * sizeof(int) - bits;
union { unsigned u; int s; } v = { (unsigned) val << shift };
return v.s >> shift;
}
class TBitStream {
std::vector<char> Buf;
int BitsUsed = 0;
int ReadPos = 0;
public:
TBitStream(const char* buf, int size);
TBitStream();
void Write(unsigned long long val, int n);
unsigned long long Read(int n);
unsigned long long GetSizeInBits() const;
uint32_t GetBufSize() const { return Buf.size(); };
const std::vector<char>& GetBytes() const {
return Buf;
}
};
} //NBitStream
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