bitstream_read_bits
bitstream_read_bits(is, LZX_PRECODE_ELEMENT_SIZE);
run_len = 4 + bitstream_read_bits(is, 4);
run_len = 20 + bitstream_read_bits(is, 5);
run_len = 4 + bitstream_read_bits(is, 1);
block_size |= bitstream_read_bits(is, 8);
block_size |= bitstream_read_bits(is, 8);
bitstream_read_bits(is,
bitstream_read_bits(is, num_extra_bits -
match_offset += bitstream_read_bits(is, num_extra_bits);