BitMiracle.LibJpeg.Classic.jpeg_compress_struct.add_huff_table C# (CSharp) Method

        private void add_huff_table(ref JHUFF_TBL htblptr, byte[] bits, byte[] val)
        {
            if (htblptr == null)
                htblptr = new JHUFF_TBL();

            /* Copy the number-of-symbols-of-each-code-length counts */
            Buffer.BlockCopy(bits, 0, htblptr.Bits, 0, htblptr.Bits.Length);

            /* Validate the counts.  We do this here mainly so we can copy the right
            * number of symbols from the val[] array, without risking marching off
            * the end of memory. huff_entropy_encoder will do a more thorough test later.
            */
            int nsymbols = 0;
            for (int len = 1; len <= 16; len++)
                nsymbols += bits[len];

            if (nsymbols < 1 || nsymbols > 256)
                ERREXIT(J_MESSAGE_CODE.JERR_BAD_HUFF_TABLE);

            Buffer.BlockCopy(val, 0, htblptr.Huffval, 0, nsymbols);

            /* Initialize sent_table false so table will be written to JPEG file. */
            htblptr.Sent_table = false;
        }