#include <qpdf/BitWriter.hh>

// See comments in bits_functions.hh

#define BITS_WRITE 1

#include <qpdf/bits_functions.hh>

BitWriter::BitWriter(Pipeline* pl) :

    pl(pl),

    ch(0),

    bit_offset(7)

{

}

void

BitWriter::writeBits(unsigned long long val, size_t bits)

{

    write_bits(this->ch, this->bit_offset, val, bits, this->pl);

}

void

BitWriter::writeBitsSigned(long long val, size_t bits)

{

    unsigned long long uval = 0;

    if (val < 0) {

        uval = (1ULL << bits) + static_cast<unsigned long long>(val);

    } else {

        uval = static_cast<unsigned long long>(val);

    }

    writeBits(uval, bits);

}

void

BitWriter::writeBitsInt(int val, size_t bits)

{

    writeBits(static_cast<unsigned long long>(val), bits);

}

void

BitWriter::flush()

{

    if (bit_offset < 7) {

        size_t bits_to_write = bit_offset + 1;

        write_bits(this->ch, this->bit_offset, 0, bits_to_write, this->pl);

    }

}