Function read_bits32

engine/dlib/src/basis/encoder/basisu_enc.h:111–132

	}

	inline uint32_t read_bits32(const uint8_t* pBuf, uint32_t& bit_offset, uint32_t codesize)
	{
		assert(codesize <= 32);
		uint32_t bits = 0;
		uint32_t total_bits = 0;

		while (total_bits < codesize)
		{
			uint32_t byte_bit_offset = bit_offset & 7;
			uint32_t bits_to_read = minimum<int>(codesize - total_bits, 8 - byte_bit_offset);

			uint32_t byte_bits = pBuf[bit_offset >> 3] >> byte_bit_offset;
			byte_bits &= ((1 << bits_to_read) - 1);

			bits |= (byte_bits << total_bits);

			total_bits += bits_to_read;
			bit_offset += bits_to_read;
		}

		return bits;
	}
				
	// Hashing