示例#1
0
        public PcxDirectory Extract([NotNull] SequentialReader reader)
        {
            reader = reader.WithByteOrder(isMotorolaByteOrder: false);

            var directory = new PcxDirectory();

            try
            {
                var identifier = reader.GetSByte();

                if (identifier != 0x0A)
                {
                    throw new ImageProcessingException("Invalid PCX identifier byte");
                }

                directory.Set(PcxDirectory.TagVersion, reader.GetSByte());

                var encoding = reader.GetSByte();
                if (encoding != 0x01)
                {
                    throw new ImageProcessingException("Invalid PCX encoding byte");
                }

                directory.Set(PcxDirectory.TagBitsPerPixel, reader.GetByte());
                directory.Set(PcxDirectory.TagXMin, reader.GetUInt16());
                directory.Set(PcxDirectory.TagYMin, reader.GetUInt16());
                directory.Set(PcxDirectory.TagXMax, reader.GetUInt16());
                directory.Set(PcxDirectory.TagYMax, reader.GetUInt16());
                directory.Set(PcxDirectory.TagHorizontalDpi, reader.GetUInt16());
                directory.Set(PcxDirectory.TagVerticalDpi, reader.GetUInt16());
                directory.Set(PcxDirectory.TagPalette, reader.GetBytes(48));
                reader.Skip(1);
                directory.Set(PcxDirectory.TagColorPlanes, reader.GetByte());
                directory.Set(PcxDirectory.TagBytesPerLine, reader.GetUInt16());

                var paletteType = reader.GetUInt16();
                if (paletteType != 0)
                {
                    directory.Set(PcxDirectory.TagPaletteType, paletteType);
                }

                var hScrSize = reader.GetUInt16();
                if (hScrSize != 0)
                {
                    directory.Set(PcxDirectory.TagHScrSize, hScrSize);
                }

                var vScrSize = reader.GetUInt16();
                if (vScrSize != 0)
                {
                    directory.Set(PcxDirectory.TagVScrSize, vScrSize);
                }
            }
            catch (Exception ex)
            {
                directory.AddError("Exception reading PCX file metadata: " + ex.Message);
            }

            return(directory);
        }
        public PcxDirectory Extract([NotNull] SequentialReader reader)
        {
            reader.IsMotorolaByteOrder = false;

            var directory = new PcxDirectory();

            try
            {
                var identifier = reader.GetSByte();
                if (identifier != 0x0A)
                {
                    throw new ImageProcessingException("Invalid PCX identifier byte");
                }
                directory.Set(PcxDirectory.TagVersion, reader.GetSByte());
                var encoding = reader.GetSByte();
                if (encoding != 0x01)
                {
                    throw new ImageProcessingException("Invalid PCX encoding byte");
                }
                directory.Set(PcxDirectory.TagBitsPerPixel, reader.GetByte());
                directory.Set(PcxDirectory.TagXMin, reader.GetUInt16());
                directory.Set(PcxDirectory.TagYMin, reader.GetUInt16());
                directory.Set(PcxDirectory.TagXMax, reader.GetUInt16());
                directory.Set(PcxDirectory.TagYMax, reader.GetUInt16());
                directory.Set(PcxDirectory.TagHorizontalDpi, reader.GetUInt16());
                directory.Set(PcxDirectory.TagVerticalDpi, reader.GetUInt16());
                directory.Set(PcxDirectory.TagPalette, reader.GetBytes(48));
                reader.Skip(1);
                directory.Set(PcxDirectory.TagColorPlanes, reader.GetByte());
                directory.Set(PcxDirectory.TagBytesPerLine, reader.GetUInt16());
                var paletteType = reader.GetUInt16();
                if (paletteType != 0)
                {
                    directory.Set(PcxDirectory.TagPaletteType, paletteType);
                }
                var hScrSize = reader.GetUInt16();
                if (hScrSize != 0)
                {
                    directory.Set(PcxDirectory.TagHScrSize, hScrSize);
                }
                var vScrSize = reader.GetUInt16();
                if (vScrSize != 0)
                {
                    directory.Set(PcxDirectory.TagVScrSize, vScrSize);
                }
            }
            catch (Exception ex)
            {
                directory.AddError("Exception reading PCX file metadata: " + ex.Message);
            }

            return directory;
        }