iTextSharp.text.pdf.parser.InlineImageUtils.ParseUnfilteredSamples C# (CSharp) Метод

        private static byte[] ParseUnfilteredSamples(PdfDictionary imageDictionary, PdfDictionary colorSpaceDic, PdfContentParser ps)
        {
            // special case:  when no filter is specified, we just read the number of bits
            // per component, multiplied by the width and height.
            if (imageDictionary.Contains(PdfName.FILTER))
                throw new ArgumentException("Dictionary contains filters");

            PdfNumber h = imageDictionary.GetAsNumber(PdfName.HEIGHT);

            int bytesToRead = ComputeBytesPerRow(imageDictionary, colorSpaceDic) * h.IntValue;
            byte[] bytes = new byte[bytesToRead];
            PRTokeniser tokeniser = ps.GetTokeniser();

            int shouldBeWhiteSpace = tokeniser.Read(); // skip next character (which better be a whitespace character - I suppose we could check for this)
            // from the PDF spec:  Unless the image uses ASCIIHexDecode or ASCII85Decode as one of its filters, the ID operator shall be followed by a single white-space character, and the next character shall be interpreted as the first byte of image data.
            // unfortunately, we've seen some PDFs where there is no space following the ID, so we have to capture this case and handle it
            int startIndex = 0;
            if (!PRTokeniser.IsWhitespace(shouldBeWhiteSpace) || shouldBeWhiteSpace == 0){ // tokeniser treats 0 as whitespace, but for our purposes, we shouldn't)
                bytes[0] = (byte)shouldBeWhiteSpace;
                startIndex++;
            }
            for (int i = startIndex; i < bytesToRead; i++){
                int ch = tokeniser.Read();
                if (ch == -1)
                    throw new InlineImageParseException("End of content stream reached before end of image data");

                bytes[i] = (byte)ch;
            }
            PdfObject ei = ps.ReadPRObject();
            if (!ei.ToString().Equals("EI"))
                throw new InlineImageParseException("EI not found after end of image data");

            return bytes;
        }