C# Classic.Tiff类代码示例

        /// <summary>
        /// Handles an error by writing it text to the <see cref="Console.Error"/>.
        /// </summary>
        /// <param name="tif">An instance of the <see cref="Tiff"/> class. Can be <c>null</c>.</param>
        /// <param name="method">The method where an error is detected.</param>
        /// <param name="format">A composite format string (see Remarks).</param>
        /// <param name="args">An object array that contains zero or more objects to format.</param>
        /// <remarks>
        /// The <paramref name="format"/> is a composite format string that uses the same format as
        /// <see cref="O:System.String.Format"/> method. The <paramref name="method"/> parameter, if
        /// not <c>null</c>, is printed before the message; it typically is used to identify the
        /// method in which an error is detected.
        /// </remarks>
        public virtual void ErrorHandler(Tiff tif, string method, string format, params object[] args)
        {
            TextWriter stderr = Console.Error;
            if (method != null)
                stderr.Write("{0}: ", method);

            stderr.Write(format, args);
            stderr.Write("\n");
        }

        public int getNumberofTiffPages(Tiff image)
        {
            int pageCount = 0;
            do
            {
                ++pageCount;
            } while (image.ReadDirectory());

            return pageCount;
        }

        public override void ErrorHandler(Tiff tif, string module, string fmt, params object[] ap)
        {
            using (TextWriter stdout = Console.Out)
            {
                if (module != null)
                    stdout.Write("{0}: ", module);

                stdout.Write(fmt, ap);
                stdout.Write(".\n");
            }
        }

        public bool tiffcvt(Tiff inImage, Tiff outImage)
        {
            FieldValue[] result = inImage.GetField(TiffTag.IMAGEWIDTH);
            if (result == null)
                return false;
            int width = result[0].ToInt();

            result = inImage.GetField(TiffTag.IMAGELENGTH);
            if (result == null)
                return false;
            int height = result[0].ToInt();

            copyField(inImage, outImage, TiffTag.SUBFILETYPE);
            outImage.SetField(TiffTag.IMAGEWIDTH, width);
            outImage.SetField(TiffTag.IMAGELENGTH, height);
            outImage.SetField(TiffTag.BITSPERSAMPLE, 8);
            outImage.SetField(TiffTag.COMPRESSION, m_compression);
            outImage.SetField(TiffTag.PHOTOMETRIC, Photometric.RGB);

            copyField(inImage, outImage, TiffTag.FILLORDER);
            outImage.SetField(TiffTag.ORIENTATION, Orientation.TOPLEFT);

            if (m_noAlpha)
                outImage.SetField(TiffTag.SAMPLESPERPIXEL, 3);
            else
                outImage.SetField(TiffTag.SAMPLESPERPIXEL, 4);

            if (!m_noAlpha)
            {
                short[] v = new short[1];
                v[0] = (short)ExtraSample.ASSOCALPHA;
                outImage.SetField(TiffTag.EXTRASAMPLES, 1, v);
            }

            copyField(inImage, outImage, TiffTag.XRESOLUTION);
            copyField(inImage, outImage, TiffTag.YRESOLUTION);
            copyField(inImage, outImage, TiffTag.RESOLUTIONUNIT);
            outImage.SetField(TiffTag.PLANARCONFIG, PlanarConfig.CONTIG);

            if (!m_testFriendly)
                outImage.SetField(TiffTag.SOFTWARE, Tiff.GetVersion());

            copyField(inImage, outImage, TiffTag.DOCUMENTNAME);
            
            if (m_processByBlock && inImage.IsTiled())
                return cvt_by_tile(inImage, outImage, width, height);
            else if (m_processByBlock)
                return cvt_by_strip(inImage, outImage, width, height);

            return cvt_whole_image(inImage, outImage, width, height);
        }

        public void TagExtender(Tiff tif)
        {
            TiffFieldInfo[] tiffFieldInfo = 
            {
                new TiffFieldInfo(TIFFTAG_ASCIITAG, -1, -1, TiffType.ASCII, FieldBit.Custom, true, false, "MyTag"),
                new TiffFieldInfo(TIFFTAG_SHORTTAG, 2, 2, TiffType.SHORT, FieldBit.Custom, false, true, "ShortTag"),
                new TiffFieldInfo(TIFFTAG_LONGTAG, 2, 2, TiffType.LONG, FieldBit.Custom, false, true, "LongTag"),
                new TiffFieldInfo(TIFFTAG_RATIONALTAG, 2, 2, TiffType.RATIONAL, FieldBit.Custom, false, true, "RationalTag"),
                new TiffFieldInfo(TIFFTAG_FLOATTAG, 2, 2, TiffType.FLOAT, FieldBit.Custom, false, true, "FloatTag"),
                new TiffFieldInfo(TIFFTAG_DOUBLETAG, 2, 2, TiffType.DOUBLE, FieldBit.Custom, false, true, "DoubleTag"),
                new TiffFieldInfo(TIFFTAG_BYTETAG, 2, 2, TiffType.BYTE, FieldBit.Custom, false, true, "ByteTag"),
                new TiffFieldInfo(TIFFTAG_IFDTAG, 1, 1, TiffType.IFD, FieldBit.Custom, false, false, "IfdTag"),
            };

            tif.MergeFieldInfo(tiffFieldInfo, tiffFieldInfo.Length);

            if (m_parentExtender != null)
                m_parentExtender(tif);
        }

    public TiffGrid(string filename, string NewFileName)
    {
      ValuesToWrite = new Dictionary<int, Dictionary<int, double>>();

      tiff_org = BitMiracle.LibTiff.Classic.Tiff.Open(Path.GetFullPath(filename), "r");

      tiff = BitMiracle.LibTiff.Classic.Tiff.Open(Path.GetFullPath(NewFileName), "w");
      foreach (TiffTag enu in Enum.GetValues(typeof(TiffTag)))
      {
        var val = tiff_org.GetField(enu);
        if (val != null & enu != TiffTag.EXTRASAMPLES)
          tiff.SetField(enu, val[0]);
      }

      for (int i = 0; i < tiff_org.GetTagListCount(); i++)
      {
        int k = tiff_org.GetTagListEntry(i);
        var ff = tiff_org.FindFieldInfo((TiffTag)k, TiffType.ANY);
        tiff.MergeFieldInfo(new TiffFieldInfo[] { ff }, 1);
        var val = tiff_org.GetField((TiffTag)tiff_org.GetTagListEntry(i));
        tiff.SetField((TiffTag)k, val[0], val[1]);
      }

      var val2 = tiff_org.GetField((TiffTag)33922)[1].ToDoubleArray();
      XOrigin = val2[3];
      YOrigin = val2[4]; //Upper basegrid assumes Lower
      val2 = tiff_org.GetField((TiffTag)33550)[1].ToDoubleArray();
      GridSize = val2[0];
      GridSize = val2[1];
      NumberOfColumns = tiff_org.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
      NumberOfRows = tiff_org.GetField(TiffTag.IMAGELENGTH)[0].ToInt();

      //Shift YOrigin to lower left
      YOrigin -= GridSize * NumberOfRows;
      scanline = new byte[tiff_org.ScanlineSize()];
      bits = scanline.Count() / NumberOfColumns;
      ScanLineCache = new Dictionary<int, byte[]>();




    }

    public TiffGrid(string FileName)
    {

      string fname = Path.GetFullPath(FileName);

      tiff = Tiff.Open(FileName, "r");
      var val = tiff.GetField((TiffTag)33922)[1].ToDoubleArray();
      XOrigin = val[3];
      YOrigin = val[4]; //Upper basegrid assumes Lower
      val = tiff.GetField((TiffTag)33550)[1].ToDoubleArray();
      GridSize = val[0];
      GridSize = val[1];
      NumberOfColumns = tiff.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
      NumberOfRows = tiff.GetField(TiffTag.IMAGELENGTH)[0].ToInt();
      scanline = new byte[tiff.ScanlineSize()];
      bits = tiff.ScanlineSize() / NumberOfColumns;
      ScanLineCache = new Dictionary<int, byte[]>();

      
    }

        private static void PrintTagInfo(Tiff tiff, TiffTag tiffTag)
        {
            try
            {
                var field = tiff.GetField(tiffTag);
                if (field != null)
                {
                    Console.WriteLine($"{tiffTag}");
                    for (int i = 0; i < field.Length; i++)
                    {
                        Console.WriteLine($"  [{i}] {field[i].Value}");
                        byte[] bytes = field[i].Value as byte[];
                        if (bytes != null)
                        {
                            Console.WriteLine($"    Length: {bytes.Length}");
                            if (bytes.Length % 8 == 0)
                            {
                                for (int k = 0; k < bytes.Length / 8; k++)
                                {
                                    Console.WriteLine($"      [{k}] {BitConverter.ToDouble(bytes, k * 8)}");
                                }
                            }

                            try
                            {
                                Console.WriteLine($"   > {System.Text.Encoding.ASCII.GetString(bytes).Trim()} < ");
                            }
                            catch (Exception ex)
                            {

                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"ERROR: {tiffTag}");
            }
        }

        static bool writeBufferToContigStrips(Tiff outImage, byte[] buffer, int imagelength, int imagewidth, short spp)
        {
            FieldValue[] result = outImage.GetFieldDefaulted(TiffTag.ROWSPERSTRIP);
            int rowsperstrip = result[0].ToInt();

            int strip = 0;
            int offset = 0;
            for (int row = 0; row < imagelength; row += rowsperstrip)
            {
                int nrows = (row + rowsperstrip > imagelength) ? imagelength - row : rowsperstrip;
                int stripsize = outImage.VStripSize(nrows);

                if (outImage.WriteEncodedStrip(strip++, buffer, offset, stripsize) < 0)
                {
                    Tiff.Error(outImage.FileName(), "Error, can't write strip {0}", strip - 1);
                    return false;
                }

                offset += stripsize;
            }

            return true;
        }

        bool readSeparateTilesIntoBuffer(Tiff inImage, byte[] buf, int imagelength, int imagewidth, short spp)
        {
            byte[] tilebuf = new byte[inImage.TileSize()];

            FieldValue[] result = inImage.GetField(TiffTag.TILEWIDTH);
            int tw = result[0].ToInt();

            result = inImage.GetField(TiffTag.TILELENGTH);
            int tl = result[0].ToInt();

            result = inImage.GetField(TiffTag.BITSPERSAMPLE);
            short bps = result[0].ToShort();

            Debug.Assert(bps % 8 == 0);

            short bytes_per_sample = (short)(bps / 8);

            int imagew = inImage.RasterScanlineSize();
            int tilew = inImage.TileRowSize();
            int iskew = imagew - tilew * spp;

            int bufp = 0;

            for (int row = 0; row < imagelength; row += tl)
            {
                int nrow = (row + tl > imagelength) ? imagelength - row : tl;
                int colb = 0;

                for (int col = 0; col < imagewidth; col += tw)
                {
                    for (short s = 0; s < spp; s++)
                    {
                        if (inImage.ReadTile(tilebuf, 0, col, row, 0, s) < 0 && !m_ignore)
                        {
                            Tiff.Error(inImage.FileName(), "Error, can't read tile at {0} {1}, sample {2}", col, row, s);
                            return false;
                        }

                        /*
                         * Tile is clipped horizontally.  Calculate
                         * visible portion and skewing factors.
                         */
                        if (colb + tilew * spp > imagew)
                        {
                            int width = imagew - colb;
                            int oskew = tilew * spp - width;
                            cpSeparateBufToContigBuf(buf, bufp + colb + s * bytes_per_sample, tilebuf, nrow, width / (spp * bytes_per_sample), oskew + iskew, oskew / spp, spp, bytes_per_sample);
                        }
                        else
                            cpSeparateBufToContigBuf(buf, bufp + colb + s * bytes_per_sample, tilebuf, nrow, tw, iskew, 0, spp, bytes_per_sample);
                    }

                    colb += tilew * spp;
                }

                bufp += imagew * nrow;
            }

            return true;
        }

        /*
         * Separate -> separate by row for rows/strip change.
         */
        bool cpSeparate2SeparateByRow(Tiff inImage, Tiff outImage, int imagelength, int imagewidth, short spp)
        {
            byte[] buf = new byte[inImage.ScanlineSize()];

            for (short s = 0; s < spp; s++)
            {
                for (int row = 0; row < imagelength; row++)
                {
                    if (!inImage.ReadScanline(buf, row, s) && !m_ignore)
                    {
                        Tiff.Error(inImage.FileName(), "Error, can't read scanline {0}", row);
                        return false;
                    }

                    if (!outImage.WriteScanline(buf, row, s))
                    {
                        Tiff.Error(outImage.FileName(), "Error, can't write scanline {0}", row);
                        return false;
                    }
                }
            }

            return true;
        }

        static bool cpImage(Tiff inImage, Tiff outImage, readFunc fin, writeFunc fout, int imagelength, int imagewidth, short spp)
        {
            bool status = false;

            int scanlinesize = inImage.RasterScanlineSize();
            int bytes = scanlinesize * imagelength;

            /*
             * XXX: Check for integer overflow.
             */
            if (scanlinesize != 0 && imagelength != 0 && (bytes / imagelength == scanlinesize))
            {
                byte[] buf = new byte[bytes];
                if (fin(inImage, buf, imagelength, imagewidth, spp))
                    status = fout(outImage, buf, imagelength, imagewidth, spp);
            }
            else
            {
                Tiff.Error(inImage.FileName(), "Error, no space for image buffer");
            }

            return status;
        }

        /*
         * Contig -> contig by scanline while subtracting a bias image.
         */
        bool cpBiasedContig2Contig(Tiff inImage, Tiff outImage, int imagelength, int imagewidth, short spp)
        {
            if (spp == 1)
            {
                int biasSize = m_bias.ScanlineSize();
                int bufSize = inImage.ScanlineSize();

                FieldValue[] result = m_bias.GetField(TiffTag.IMAGEWIDTH);
                int biasWidth = result[0].ToInt();

                result = m_bias.GetField(TiffTag.IMAGELENGTH);
                int biasLength = result[0].ToInt();

                if (biasSize == bufSize && imagelength == biasLength && imagewidth == biasWidth)
                {
                    result = inImage.GetField(TiffTag.BITSPERSAMPLE);
                    short sampleBits = result[0].ToShort();

                    if (sampleBits == 8 || sampleBits == 16 || sampleBits == 32)
                    {
                        byte[] buf = new byte[bufSize];
                        byte[] biasBuf = new byte[bufSize];

                        for (int row = 0; row < imagelength; row++)
                        {
                            if (!inImage.ReadScanline(buf, row, 0) && !m_ignore)
                            {
                                Tiff.Error(inImage.FileName(), "Error, can't read scanline {0}", row);
                                return false;
                            }

                            if (!m_bias.ReadScanline(biasBuf, row, 0) && !m_ignore)
                            {
                                Tiff.Error(inImage.FileName(), "Error, can't read biased scanline {0}", row);
                                return false;
                            }

                            if (sampleBits == 8)
                                subtract8(buf, biasBuf, imagewidth);
                            else if (sampleBits == 16)
                                subtract16(buf, biasBuf, imagewidth);
                            else if (sampleBits == 32)
                                subtract32(buf, biasBuf, imagewidth);

                            if (!outImage.WriteScanline(buf, row, 0))
                            {
                                Tiff.Error(outImage.FileName(), "Error, can't write scanline {0}", row);
                                return false;
                            }
                        }

                        m_bias.SetDirectory(m_bias.CurrentDirectory()); /* rewind */
                        return true;
                    }
                    else
                    {
                        Tiff.Error(inImage.FileName(), "No support for biasing {0} bit pixels\n", sampleBits);
                        return false;
                    }
                }

                Tiff.Error(inImage.FileName(), "Bias image {0},{1}\nis not the same size as {2},{3}\n",
                    m_bias.FileName(), m_bias.CurrentDirectory(), inImage.FileName(), inImage.CurrentDirectory());
                return false;
            }
            else
            {
                Tiff.Error(inImage.FileName(), "Can't bias {0},{1} as it has >1 Sample/Pixel\n",
                    inImage.FileName(), inImage.CurrentDirectory());
                return false;
            }
        }

        public bool Copy(Tiff inImage, Tiff outImage)
        {
            int width = 0;
            FieldValue[] result = inImage.GetField(TiffTag.IMAGEWIDTH);
            if (result != null)
            {
                width = result[0].ToInt();
                outImage.SetField(TiffTag.IMAGEWIDTH, width);
            }

            int length = 0;
            result = inImage.GetField(TiffTag.IMAGELENGTH);
            if (result != null)
            {
                length = result[0].ToInt();
                outImage.SetField(TiffTag.IMAGELENGTH, length);
            }

            short bitspersample = 1;
            result = inImage.GetField(TiffTag.BITSPERSAMPLE);
            if (result != null)
            {
                bitspersample = result[0].ToShort();
                outImage.SetField(TiffTag.BITSPERSAMPLE, bitspersample);
            }

            short samplesperpixel = 1;
            result = inImage.GetField(TiffTag.SAMPLESPERPIXEL);
            if (result != null)
            {
                samplesperpixel = result[0].ToShort();
                outImage.SetField(TiffTag.SAMPLESPERPIXEL, samplesperpixel);
            }

            if (m_compression != (Compression)(-1))
                outImage.SetField(TiffTag.COMPRESSION, m_compression);
            else
            {
                result = inImage.GetField(TiffTag.COMPRESSION);
                if (result != null)
                {
                    m_compression = (Compression)result[0].ToInt();
                    outImage.SetField(TiffTag.COMPRESSION, m_compression);
                }
            }

            result = inImage.GetFieldDefaulted(TiffTag.COMPRESSION);
            Compression input_compression = (Compression)result[0].ToInt();

            result = inImage.GetFieldDefaulted(TiffTag.PHOTOMETRIC);
            Photometric input_photometric = (Photometric)result[0].ToShort();
    
            if (input_compression == Compression.JPEG)
            {
                /* Force conversion to RGB */
                inImage.SetField(TiffTag.JPEGCOLORMODE, JpegColorMode.RGB);
            }
            else if (input_photometric == Photometric.YCBCR)
            {
                /* Otherwise, can't handle subsampled input */
                result = inImage.GetFieldDefaulted(TiffTag.YCBCRSUBSAMPLING);
                short subsamplinghor = result[0].ToShort();
                short subsamplingver = result[1].ToShort();

                if (subsamplinghor != 1 || subsamplingver != 1)
                {
                    Console.Error.WriteLine("tiffcp: {0}: Can't copy/convert subsampled image.", inImage.FileName());
                    return false;
                }
            }

            if (m_compression == Compression.JPEG)
            {
                if (input_photometric == Photometric.RGB && m_jpegcolormode == JpegColorMode.RGB)
                    outImage.SetField(TiffTag.PHOTOMETRIC, Photometric.YCBCR);
                else
                    outImage.SetField(TiffTag.PHOTOMETRIC, input_photometric);
            }
            else if (m_compression == Compression.SGILOG || m_compression == Compression.SGILOG24)
            {
                outImage.SetField(TiffTag.PHOTOMETRIC, samplesperpixel == 1 ? Photometric.LOGL : Photometric.LOGLUV);
            }
            else
            {
                if (input_compression != Compression.JPEG)
                    copyTag(inImage, outImage, TiffTag.PHOTOMETRIC, 1, TiffType.SHORT);
            }

            if (m_fillorder != 0)
                outImage.SetField(TiffTag.FILLORDER, m_fillorder);
            else
                copyTag(inImage, outImage, TiffTag.FILLORDER, 1, TiffType.SHORT);

            /*
             * Will copy `Orientation' tag from input image
             */
            result = inImage.GetFieldDefaulted(TiffTag.ORIENTATION);
            m_orientation = (Orientation)result[0].ToByte();
            switch (m_orientation)
            {
//.........这里部分代码省略.........

        bool writeBufferToSeparateTiles(Tiff outImage, byte[] buf, int imagelength, int imagewidth, short spp)
        {
            byte[] obuf = new byte[outImage.TileSize()];

            FieldValue[] result = outImage.GetField(TiffTag.TILELENGTH);
            int tl = result[0].ToInt();

            result = outImage.GetField(TiffTag.TILEWIDTH);
            int tw = result[0].ToInt();

            result = outImage.GetField(TiffTag.BITSPERSAMPLE);
            short bps = result[0].ToShort();

            Debug.Assert(bps % 8 == 0);

            short bytes_per_sample = (short)(bps / 8);

            int imagew = outImage.ScanlineSize();
            int tilew = outImage.TileRowSize();
            int iimagew = outImage.RasterScanlineSize();
            int iskew = iimagew - tilew * spp;

            int bufp = 0;

            for (int row = 0; row < imagelength; row += tl)
            {
                int nrow = (row + tl > imagelength) ? imagelength - row : tl;
                int colb = 0;

                for (int col = 0; col < imagewidth; col += tw)
                {
                    for (short s = 0; s < spp; s++)
                    {
                        /*
                         * Tile is clipped horizontally.  Calculate
                         * visible portion and skewing factors.
                         */
                        if (colb + tilew > imagew)
                        {
                            int width = imagew - colb;
                            int oskew = tilew - width;

                            cpContigBufToSeparateBuf(obuf, buf, bufp + (colb * spp) + s, nrow, width / bytes_per_sample, oskew, (oskew * spp) + iskew, spp, bytes_per_sample);
                        }
                        else
                            cpContigBufToSeparateBuf(obuf, buf, bufp + (colb * spp) + s, nrow, m_tilewidth, 0, iskew, spp, bytes_per_sample);

                        if (outImage.WriteTile(obuf, col, row, 0, s) < 0)
                        {
                            Tiff.Error(outImage.FileName(), "Error, can't write tile at {0} {1} sample {2}", col, row, s);
                            return false;
                        }
                    }

                    colb += tilew;
                }

                bufp += nrow * iimagew;
            }

            return true;
        }