/// <summary> Creates a new writer to the specified File object, to write data from /// the specified component. /// /// <p>The size of the image that is written to the file is the size of the /// component from which to get the data, specified by b, not the size of /// the source image (they differ if there is some sub-sampling).</p> /// /// </summary> /// <param name="out">The file where to write the data /// /// </param> /// <param name="imgSrc">The source from where to get the image data to write. /// /// </param> /// <param name="c">The index of the component from where to get the data. /// /// </param> public ImgWriterPGM(IFileInfo out_Renamed, BlkImgDataSrc imgSrc, int c) { // Check that imgSrc is of the correct type // Check that the component index is valid if (c < 0 || c >= imgSrc.NumComps) { throw new System.ArgumentException("Invalid number of components"); } // Check that imgSrc is of the correct type if (imgSrc.getNomRangeBits(c) > 8) { FacilityManager.getMsgLogger().println("Warning: Component " + c + " has nominal bitdepth " + imgSrc.getNomRangeBits(c) + ". Pixel values will be " + "down-shifted to fit bitdepth of 8 for PGM file", 8, 8); } // Initialize if (out_Renamed.Exists && !out_Renamed.Delete()) { throw new System.IO.IOException("Could not reset file"); } this.out_Renamed = SupportClass.RandomAccessFileSupport.CreateRandomAccessFile(out_Renamed, "rw"); src = imgSrc; this.c = c; w = imgSrc.ImgWidth; h = imgSrc.ImgHeight; fb = imgSrc.getFixedPoint(c); levShift = 1 << (imgSrc.getNomRangeBits(c) - 1); writeHeaderInfo(); }
/// <summary> Creates a new writer to the specified File object, to write data from /// the specified component. /// /// <p>The size of the image that is written to the file is the size of the /// component from which to get the data, specified by b, not the size of /// the source image (they differ if there is some sub-sampling).</p> /// /// <p>All the header informations are given by the BlkImgDataSrc source /// (component width, component height, bit-depth) and sign flag, which are /// provided to the constructor. The endianness is always big-endian (MSB /// first).</p> /// /// </summary> /// <param name="out">The file where to write the data /// /// </param> /// <param name="imgSrc">The source from where to get the image data to write. /// /// </param> /// <param name="c">The index of the component from where to get the data. /// /// </param> /// <param name="isSigned">Whether the datas are signed or not (needed only when /// writing header). /// /// </param> /// <seealso cref="DataBlk"> /// /// </seealso> public ImgWriterPGX(IFileInfo out_Renamed, BlkImgDataSrc imgSrc, int c, bool isSigned) { //Initialize this.c = c; if (out_Renamed.Exists && !out_Renamed.Delete()) { throw new System.IO.IOException("Could not reset file"); } this.out_Renamed = SupportClass.RandomAccessFileSupport.CreateRandomAccessFile(out_Renamed, "rw"); this.isSigned = isSigned; src = imgSrc; w = src.ImgWidth; h = src.ImgHeight; fb = imgSrc.getFixedPoint(c); bitDepth = src.getNomRangeBits(this.c); if ((bitDepth <= 0) || (bitDepth > 31)) { throw new System.IO.IOException("PGX supports only bit-depth between " + "1 and 31"); } if (bitDepth <= 8) { packBytes = 1; } else if (bitDepth <= 16) { packBytes = 2; } else { // <= 31 packBytes = 4; } // Writes PGX header System.String tmpString = "PG " + "ML " + ((this.isSigned)?"- ":"+ ") + bitDepth + " " + w + " " + h + "\n"; // component height byte[] tmpByte = System.Text.Encoding.UTF8.GetBytes(tmpString); for (int i = 0; i < tmpByte.Length; i++) { this.out_Renamed.WriteByte((byte)tmpByte[i]); } offset = tmpByte.Length; maxVal = this.isSigned?((1 << (src.getNomRangeBits(c) - 1)) - 1):((1 << src.getNomRangeBits(c)) - 1); minVal = this.isSigned?((-1) * (1 << (src.getNomRangeBits(c) - 1))):0; levShift = (this.isSigned)?0:1 << (src.getNomRangeBits(c) - 1); }
/// <summary>General utility used by ctors </summary> private void initialize() { this.pl = csMap.pl; this.ncomps = src.NumComps; shiftValueArray = new int[ncomps]; maxValueArray = new int[ncomps]; fixedPtBitsArray = new int[ncomps]; srcBlk = new DataBlk[ncomps]; inInt = new DataBlkInt[ncomps]; inFloat = new DataBlkFloat[ncomps]; workInt = new DataBlkInt[ncomps]; workFloat = new DataBlkFloat[ncomps]; dataInt = new int[ncomps][]; dataFloat = new float[ncomps][]; workDataInt = new int[ncomps][]; workDataFloat = new float[ncomps][]; dataInt = new int[ncomps][]; dataFloat = new float[ncomps][]; /* For each component, get a reference to the pixel data and * set up working DataBlks for both integer and float output. */ for (int i = 0; i < ncomps; ++i) { shiftValueArray[i] = 1 << (src.getNomRangeBits(i) - 1); maxValueArray[i] = (1 << src.getNomRangeBits(i)) - 1; fixedPtBitsArray[i] = src.getFixedPoint(i); inInt[i] = new DataBlkInt(); inFloat[i] = new DataBlkFloat(); workInt[i] = new DataBlkInt(); workInt[i].progressive = inInt[i].progressive; workFloat[i] = new DataBlkFloat(); workFloat[i].progressive = inFloat[i].progressive; } }
/// <summary> Creates a new writer to the specified File object, to write data from /// the specified component. /// /// <p>The three components that will be written as R, G and B must be /// specified through the b1, b2 and b3 arguments.</p> /// /// </summary> /// <param name="out">The file where to write the data /// /// </param> /// <param name="imgSrc">The source from where to get the image data to write. /// /// </param> /// <param name="n1">The index of the first component from where to get the data, /// that will be written as the red channel. /// /// </param> /// <param name="n2">The index of the second component from where to get the data, /// that will be written as the green channel. /// /// </param> /// <param name="n3">The index of the third component from where to get the data, /// that will be written as the green channel. /// /// </param> /// <seealso cref="DataBlk"> /// /// </seealso> public ImgWriterPPM(IFileInfo out_Renamed, BlkImgDataSrc imgSrc, int n1, int n2, int n3) { // Check that imgSrc is of the correct type // Check that the component index is valid if ((n1 < 0) || (n1 >= imgSrc.NumComps) || (n2 < 0) || (n2 >= imgSrc.NumComps) || (n3 < 0) || (n3 >= imgSrc.NumComps) || (imgSrc.getNomRangeBits(n1) > 8) || (imgSrc.getNomRangeBits(n2) > 8) || (imgSrc.getNomRangeBits(n3) > 8)) { throw new System.ArgumentException("Invalid component indexes"); } // Initialize w = imgSrc.getCompImgWidth(n1); h = imgSrc.getCompImgHeight(n1); // Check that all components have same width and height if (w != imgSrc.getCompImgWidth(n2) || w != imgSrc.getCompImgWidth(n3) || h != imgSrc.getCompImgHeight(n2) || h != imgSrc.getCompImgHeight(n3)) { throw new System.ArgumentException("All components must have the" + " same dimensions and no" + " subsampling"); } w = imgSrc.ImgWidth; h = imgSrc.ImgHeight; // Continue initialization if (out_Renamed.Exists && !out_Renamed.Delete()) { throw new System.IO.IOException("Could not reset file"); } this.out_Renamed = SupportClass.RandomAccessFileSupport.CreateRandomAccessFile(out_Renamed, "rw"); src = imgSrc; cps[0] = n1; cps[1] = n2; cps[2] = n3; fb[0] = imgSrc.getFixedPoint(n1); fb[1] = imgSrc.getFixedPoint(n2); fb[2] = imgSrc.getFixedPoint(n3); levShift[0] = 1 << (imgSrc.getNomRangeBits(n1) - 1); levShift[1] = 1 << (imgSrc.getNomRangeBits(n2) - 1); levShift[2] = 1 << (imgSrc.getNomRangeBits(n3) - 1); writeHeaderInfo(); }
/// <summary> Initialize some variables used with RCT. It must be called, at least, /// at the beginning of each new tile. /// /// </summary> private void initForwRCT() { int i; int tIdx = TileIdx; if (src.NumComps < 3) { throw new System.ArgumentException(); } // Check that the 3 components have the same dimensions if (src.getTileCompWidth(tIdx, 0) != src.getTileCompWidth(tIdx, 1) || src.getTileCompWidth(tIdx, 0) != src.getTileCompWidth(tIdx, 2) || src.getTileCompHeight(tIdx, 0) != src.getTileCompHeight(tIdx, 1) || src.getTileCompHeight(tIdx, 0) != src.getTileCompHeight(tIdx, 2)) { throw new System.ArgumentException("Can not use RCT " + "on components with different " + "dimensions"); } // Initialize bitdepths int[] utd; // Premix bitdepths utd = new int[src.NumComps]; for (i = utd.Length - 1; i >= 0; i--) { utd[i] = src.getNomRangeBits(i); } tdepth = calcMixedBitDepths(utd, FORW_RCT, null); }
public static Image FromStream(Stream stream) { RandomAccessIO in_stream = new ISRandomAccessIO(stream); // Initialize default parameters ParameterList defpl = GetDefaultParameterList(decoder_pinfo); // Create parameter list using defaults ParameterList pl = new ParameterList(defpl); // **** File Format **** // If the codestream is wrapped in the jp2 fileformat, Read the // file format wrapper FileFormatReader ff = new FileFormatReader(in_stream); ff.readFileFormat(); if (ff.JP2FFUsed) { in_stream.seek(ff.FirstCodeStreamPos); } // +----------------------------+ // | Instantiate decoding chain | // +----------------------------+ // **** Header decoder **** // Instantiate header decoder and read main header HeaderInfo hi = new HeaderInfo(); HeaderDecoder hd; try { hd = new HeaderDecoder(in_stream, pl, hi); } catch (EndOfStreamException e) { throw new ApplicationException("Codestream too short or bad header, unable to decode.", e); } int nCompCod = hd.NumComps; int nTiles = hi.sizValue.NumTiles; DecoderSpecs decSpec = hd.DecoderSpecs; // Get demixed bitdepths int[] depth = new int[nCompCod]; for (int i = 0; i < nCompCod; i++) { depth[i] = hd.getOriginalBitDepth(i); } // **** Bit stream reader **** BitstreamReaderAgent breader; try { breader = BitstreamReaderAgent. createInstance(in_stream, hd, pl, decSpec, false, hi); } catch (IOException e) { throw new ApplicationException("Error while reading bit stream header or parsing packets.", e); } catch (ArgumentException e) { throw new ApplicationException("Cannot instantiate bit stream reader.", e); } // **** Entropy decoder **** EntropyDecoder entdec; try { entdec = hd.createEntropyDecoder(breader, pl); } catch (ArgumentException e) { throw new ApplicationException("Cannot instantiate entropy decoder.", e); } // **** ROI de-scaler **** ROIDeScaler roids; try { roids = hd.createROIDeScaler(entdec, pl, decSpec); } catch (ArgumentException e) { throw new ApplicationException("Cannot instantiate roi de-scaler.", e); } // **** Dequantizer **** Dequantizer deq; try { deq = hd.createDequantizer(roids, depth, decSpec); } catch (ArgumentException e) { throw new ApplicationException("Cannot instantiate dequantizer.", e); } // **** Inverse wavelet transform *** InverseWT invWT; try { // full page inverse wavelet transform invWT = InverseWT.createInstance(deq, decSpec); } catch (ArgumentException e) { throw new ApplicationException("Cannot instantiate inverse wavelet transform.", e); } int res = breader.ImgRes; invWT.ImgResLevel = res; // **** Data converter **** (after inverse transform module) ImgDataConverter converter = new ImgDataConverter(invWT, 0); // **** Inverse component transformation **** InvCompTransf ictransf = new InvCompTransf(converter, decSpec, depth, pl); // **** Color space mapping **** BlkImgDataSrc color; if (ff.JP2FFUsed && pl.getParameter("nocolorspace").Equals("off")) { try { ColorSpace csMap = new ColorSpace(in_stream, hd, pl); BlkImgDataSrc channels = hd.createChannelDefinitionMapper(ictransf, csMap); BlkImgDataSrc resampled = hd.createResampler(channels, csMap); BlkImgDataSrc palettized = hd.createPalettizedColorSpaceMapper(resampled, csMap); color = hd.createColorSpaceMapper(palettized, csMap); } catch (ArgumentException e) { throw new ApplicationException("Could not instantiate ICC profiler.", e); } catch (ColorSpaceException e) { throw new ApplicationException("Error processing ColorSpace information.", e); } } else { // Skip colorspace mapping color = ictransf; } // This is the last image in the decoding chain and should be // assigned by the last transformation: BlkImgDataSrc decodedImage = color; if (color == null) { decodedImage = ictransf; } int numComps = decodedImage.NumComps; int bytesPerPixel = numComps; // Assuming 8-bit components // **** Copy to Bitmap **** PixelFormat pixelFormat; switch (numComps) { case 1: pixelFormat = PixelFormat.Format24bppRgb; break; case 3: pixelFormat = PixelFormat.Format24bppRgb; break; case 4: case 5: pixelFormat = PixelFormat.Format32bppArgb; break; default: throw new ApplicationException("Unsupported PixelFormat. " + numComps + " components."); } Bitmap dst = new Bitmap(decodedImage.ImgWidth, decodedImage.ImgHeight, pixelFormat); Coord numTiles = decodedImage.getNumTiles(null); int tIdx = 0; for (int y = 0; y < numTiles.y; y++) { // Loop on horizontal tiles for (int x = 0; x < numTiles.x; x++, tIdx++) { decodedImage.setTile(x, y); int height = decodedImage.getTileCompHeight(tIdx, 0); int width = decodedImage.getTileCompWidth(tIdx, 0); int tOffx = decodedImage.getCompULX(0) - (int)Math.Ceiling(decodedImage.ImgULX / (double)decodedImage.getCompSubsX(0)); int tOffy = decodedImage.getCompULY(0) - (int)Math.Ceiling(decodedImage.ImgULY / (double)decodedImage.getCompSubsY(0)); DataBlkInt[] db = new DataBlkInt[numComps]; int[] ls = new int[numComps]; int[] mv = new int[numComps]; int[] fb = new int[numComps]; for (int i = 0; i < numComps; i++) { db[i] = new DataBlkInt(); ls[i] = 1 << (decodedImage.getNomRangeBits(0) - 1); mv[i] = (1 << decodedImage.getNomRangeBits(0)) - 1; fb[i] = decodedImage.getFixedPoint(0); } for (int l = 0; l < height; l++) { for (int i = numComps - 1; i >= 0; i--) { db[i].ulx = 0; db[i].uly = l; db[i].w = width; db[i].h = 1; decodedImage.getInternCompData(db[i], i); } int[] k = new int[numComps]; for (int i = numComps - 1; i >= 0; i--) { k[i] = db[i].offset + width - 1; } int outputBytesPerPixel = Math.Max(3, Math.Min(4, bytesPerPixel)); byte[] rowvalues = new byte[width * outputBytesPerPixel]; for (int i = width - 1; i >= 0; i--) { int[] tmp = new int[numComps]; for (int j = numComps - 1; j >= 0; j--) { tmp[j] = (db[j].data_array[k[j]--] >> fb[j]) + ls[j]; tmp[j] = (tmp[j] < 0) ? 0 : ((tmp[j] > mv[j]) ? mv[j] : tmp[j]); if (decodedImage.getNomRangeBits(j) != 8) { tmp[j] = (int)Math.Round(((double)tmp[j] / Math.Pow(2D, (double)decodedImage.getNomRangeBits(j))) * 255D); } } int offset = i * outputBytesPerPixel; switch (numComps) { case 1: rowvalues[offset + 0] = (byte)tmp[0]; rowvalues[offset + 1] = (byte)tmp[0]; rowvalues[offset + 2] = (byte)tmp[0]; break; case 3: rowvalues[offset + 0] = (byte)tmp[2]; rowvalues[offset + 1] = (byte)tmp[1]; rowvalues[offset + 2] = (byte)tmp[0]; break; case 4: case 5: rowvalues[offset + 0] = (byte)tmp[2]; rowvalues[offset + 1] = (byte)tmp[1]; rowvalues[offset + 2] = (byte)tmp[0]; rowvalues[offset + 3] = (byte)tmp[3]; break; } } BitmapData dstdata = dst.LockBits( new System.Drawing.Rectangle(tOffx, tOffy + l, width, 1), ImageLockMode.WriteOnly, pixelFormat); IntPtr ptr = dstdata.Scan0; System.Runtime.InteropServices.Marshal.Copy(rowvalues, 0, ptr, rowvalues.Length); dst.UnlockBits(dstdata); } } } return(dst); }
/// <summary> Creates a new writer to the specified File object, to write data from /// the specified component. /// /// <p>The size of the image that is written to the file is the size of the /// component from which to get the data, specified by b, not the size of /// the source image (they differ if there is some sub-sampling).</p> /// /// <p>All the header informations are given by the BlkImgDataSrc source /// (component width, component height, bit-depth) and sign flag, which are /// provided to the constructor. The endianness is always big-endian (MSB /// first).</p> /// /// </summary> /// <param name="out">The file where to write the data /// /// </param> /// <param name="imgSrc">The source from where to get the image data to write. /// /// </param> /// <param name="c">The index of the component from where to get the data. /// /// </param> /// <param name="isSigned">Whether the datas are signed or not (needed only when /// writing header). /// /// </param> /// <seealso cref="DataBlk"> /// /// </seealso> public ImgWriterPGX(System.IO.FileInfo out_Renamed, BlkImgDataSrc imgSrc, int c, bool isSigned) { //Initialize this.c = c; bool tmpBool; if (System.IO.File.Exists(out_Renamed.FullName)) tmpBool = true; else tmpBool = System.IO.Directory.Exists(out_Renamed.FullName); bool tmpBool2; if (System.IO.File.Exists(out_Renamed.FullName)) { System.IO.File.Delete(out_Renamed.FullName); tmpBool2 = true; } else if (System.IO.Directory.Exists(out_Renamed.FullName)) { System.IO.Directory.Delete(out_Renamed.FullName); tmpBool2 = true; } else tmpBool2 = false; if (tmpBool && !tmpBool2) { throw new System.IO.IOException("Could not reset file"); } this.out_Renamed = SupportClass.RandomAccessFileSupport.CreateRandomAccessFile(out_Renamed, "rw"); this.isSigned = isSigned; src = imgSrc; w = src.ImgWidth; h = src.ImgHeight; fb = imgSrc.getFixedPoint(c); bitDepth = src.getNomRangeBits(this.c); if ((bitDepth <= 0) || (bitDepth > 31)) { throw new System.IO.IOException("PGX supports only bit-depth between " + "1 and 31"); } if (bitDepth <= 8) { packBytes = 1; } else if (bitDepth <= 16) { packBytes = 2; } else { // <= 31 packBytes = 4; } // Writes PGX header System.String tmpString = "PG " + "ML " + ((this.isSigned)?"- ":"+ ") + bitDepth + " " + w + " " + h + "\n"; // component height byte[] tmpByte = System.Text.ASCIIEncoding.ASCII.GetBytes(tmpString); for (int i = 0; i < tmpByte.Length; i++) { this.out_Renamed.WriteByte((byte) tmpByte[i]); } offset = tmpByte.Length; maxVal = this.isSigned?((1 << (src.getNomRangeBits(c) - 1)) - 1):((1 << src.getNomRangeBits(c)) - 1); minVal = this.isSigned?((- 1) * (1 << (src.getNomRangeBits(c) - 1))):0; levShift = (this.isSigned)?0:1 << (src.getNomRangeBits(c) - 1); }
public static byte[] ToBytes(BlkImgDataSrc imgsrc, ParameterList parameters = null) { // Initialize default parameters ParameterList defpl = GetDefaultEncoderParameterList(encoder_pinfo); // Create parameter list using defaults ParameterList pl = parameters ?? new ParameterList(defpl); bool useFileFormat = false; bool pphTile = false; bool pphMain = false; bool tempSop = false; bool tempEph = false; // **** Get general parameters **** if (pl.getParameter("file_format").Equals("on")) { useFileFormat = true; if (pl.getParameter("rate") != null && pl.getFloatParameter("rate") != defpl.getFloatParameter("rate")) { warning("Specified bit-rate applies only on the codestream but not on the whole file."); } } if (pl.getParameter("tiles") == null) { error("No tiles option specified", 2); return null; } if (pl.getParameter("pph_tile").Equals("on")) { pphTile = true; if (pl.getParameter("Psop").Equals("off")) { pl["Psop"] = "on"; tempSop = true; } if (pl.getParameter("Peph").Equals("off")) { pl["Peph"] = "on"; tempEph = true; } } if (pl.getParameter("pph_main").Equals("on")) { pphMain = true; if (pl.getParameter("Psop").Equals("off")) { pl["Psop"] = "on"; tempSop = true; } if (pl.getParameter("Peph").Equals("off")) { pl["Peph"] = "on"; tempEph = true; } } if (pphTile && pphMain) error("Can't have packed packet headers in both main and" + " tile headers", 2); if (pl.getBooleanParameter("lossless") && pl.getParameter("rate") != null && pl.getFloatParameter("rate") != defpl.getFloatParameter("rate")) throw new ArgumentException("Cannot use '-rate' and " + "'-lossless' option at " + " the same time."); if (pl.getParameter("rate") == null) { error("Target bitrate not specified", 2); return null; } float rate; try { rate = pl.getFloatParameter("rate"); if (rate == -1) { rate = float.MaxValue; } } catch (FormatException e) { error("Invalid value in 'rate' option: " + pl.getParameter("rate"), 2); return null; } int pktspertp; try { pktspertp = pl.getIntParameter("tile_parts"); if (pktspertp != 0) { if (pl.getParameter("Psop").Equals("off")) { pl["Psop"] = "on"; tempSop = true; } if (pl.getParameter("Peph").Equals("off")) { pl["Peph"] = "on"; tempEph = true; } } } catch (FormatException e) { error("Invalid value in 'tile_parts' option: " + pl.getParameter("tile_parts"), 2); return null; } // **** ImgReader **** var ncomp = imgsrc.NumComps; var ppminput = imgsrc.NumComps > 1; // **** Tiler **** // get nominal tile dimensions SupportClass.StreamTokenizerSupport stok = new SupportClass.StreamTokenizerSupport(new StringReader(pl.getParameter("tiles"))); stok.EOLIsSignificant(false); stok.NextToken(); if (stok.ttype != SupportClass.StreamTokenizerSupport.TT_NUMBER) { error("An error occurred while parsing the tiles option: " + pl.getParameter("tiles"), 2); return null; } var tw = (int)stok.nval; stok.NextToken(); if (stok.ttype != SupportClass.StreamTokenizerSupport.TT_NUMBER) { error("An error occurred while parsing the tiles option: " + pl.getParameter("tiles"), 2); return null; } var th = (int)stok.nval; // Get image reference point var refs = pl.getParameter("ref").Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries); int refx; int refy; try { refx = Int32.Parse(refs[0]); refy = Int32.Parse(refs[1]); } catch (IndexOutOfRangeException e) { throw new ArgumentException("Error while parsing 'ref' " + "option"); } catch (FormatException e) { throw new ArgumentException("Invalid number type in " + "'ref' option"); } if (refx < 0 || refy < 0) { throw new ArgumentException("Invalid value in 'ref' " + "option "); } // Get tiling reference point var trefs = pl.getParameter("tref").Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries); int trefx; int trefy; try { trefx = Int32.Parse(trefs[0]); trefy = Int32.Parse(trefs[1]); } catch (IndexOutOfRangeException e) { throw new ArgumentException("Error while parsing 'tref' " + "option"); } catch (FormatException e) { throw new ArgumentException("Invalid number type in " + "'tref' option"); } if (trefx < 0 || trefy < 0 || trefx > refx || trefy > refy) { throw new ArgumentException("Invalid value in 'tref' " + "option "); } // Instantiate tiler Tiler imgtiler; try { imgtiler = new Tiler(imgsrc, refx, refy, trefx, trefy, tw, th); } catch (ArgumentException e) { error("Could not tile image" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } int ntiles = imgtiler.getNumTiles(); // **** Encoder specifications **** var encSpec = new EncoderSpecs(ntiles, ncomp, imgsrc, pl); // **** Component transformation **** if (ppminput && pl.getParameter("Mct") != null && pl.getParameter("Mct").Equals("off")) { FacilityManager.getMsgLogger() .printmsg( MsgLogger_Fields.WARNING, "Input image is RGB and no color transform has " + "been specified. Compression performance and " + "image quality might be greatly degraded. Use " + "the 'Mct' option to specify a color transform"); } ForwCompTransf fctransf; try { fctransf = new ForwCompTransf(imgtiler, encSpec); } catch (ArgumentException e) { error( "Could not instantiate forward component " + "transformation" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } // **** ImgDataConverter **** var converter = new ImgDataConverter(fctransf); // **** ForwardWT **** ForwardWT dwt; try { dwt = ForwardWT.createInstance(converter, pl, encSpec); } catch (ArgumentException e) { error("Could not instantiate wavelet transform" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } // **** Quantizer **** Quantizer quant; try { quant = Quantizer.createInstance(dwt, encSpec); } catch (ArgumentException e) { error("Could not instantiate quantizer" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } // **** ROIScaler **** ROIScaler rois; try { rois = ROIScaler.createInstance(quant, pl, encSpec); } catch (ArgumentException e) { error("Could not instantiate ROI scaler" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } // **** EntropyCoder **** EntropyCoder ecoder; try { ecoder = EntropyCoder.createInstance( rois, pl, encSpec.cblks, encSpec.pss, encSpec.bms, encSpec.mqrs, encSpec.rts, encSpec.css, encSpec.sss, encSpec.lcs, encSpec.tts); } catch (ArgumentException e) { error("Could not instantiate entropy coder" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } // **** CodestreamWriter **** using (var outStream = new MemoryStream()) { CodestreamWriter bwriter; try { // Rely on rate allocator to limit amount of data bwriter = new FileCodestreamWriter(outStream, Int32.MaxValue); } catch (IOException e) { error("Could not open output file" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } // **** Rate allocator **** PostCompRateAllocator ralloc; try { ralloc = PostCompRateAllocator.createInstance(ecoder, pl, rate, bwriter, encSpec); } catch (ArgumentException e) { error("Could not instantiate rate allocator" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } // **** HeaderEncoder **** var imsigned = Enumerable.Repeat(false, ncomp).ToArray(); // TODO Consider supporting signed components. var headenc = new HeaderEncoder(imgsrc, imsigned, dwt, imgtiler, encSpec, rois, ralloc, pl); ralloc.HeaderEncoder = headenc; // **** Write header to be able to estimate header overhead **** headenc.encodeMainHeader(); // **** Initialize rate allocator, with proper header // overhead. This will also encode all the data **** ralloc.initialize(); // **** Write header (final) **** headenc.reset(); headenc.encodeMainHeader(); // Insert header into the codestream bwriter.commitBitstreamHeader(headenc); // **** Now do the rate-allocation and write result **** ralloc.runAndWrite(); // **** Done **** bwriter.close(); // **** Calculate file length **** int fileLength = bwriter.Length; // **** Tile-parts and packed packet headers **** if (pktspertp > 0 || pphTile || pphMain) { try { CodestreamManipulator cm = new CodestreamManipulator( outStream, ntiles, pktspertp, pphMain, pphTile, tempSop, tempEph); fileLength += cm.doCodestreamManipulation(); //String res=""; if (pktspertp > 0) { FacilityManager.getMsgLogger() .println( "Created tile-parts " + "containing at most " + pktspertp + " packets per tile.", 4, 6); } if (pphTile) { FacilityManager.getMsgLogger().println("Moved packet headers " + "to tile headers", 4, 6); } if (pphMain) { FacilityManager.getMsgLogger().println("Moved packet headers " + "to main header", 4, 6); } } catch (IOException e) { error( "Error while creating tileparts or packed packet" + " headers" + ((e.Message != null) ? (":\n" + e.Message) : ""), 2); return null; } } // **** File Format **** if (useFileFormat) { try { int nc = imgsrc.NumComps; int[] bpc = new int[nc]; for (int comp = 0; comp < nc; comp++) { bpc[comp] = imgsrc.getNomRangeBits(comp); } outStream.Seek(0, SeekOrigin.Begin); var ffw = new FileFormatWriter( outStream, imgsrc.ImgHeight, imgsrc.ImgWidth, nc, bpc, fileLength); fileLength += ffw.writeFileFormat(); } catch (IOException e) { throw new InvalidOperationException("Error while writing JP2 file format: " + e.Message); } } // **** Close image readers *** imgsrc.close(); return outStream.ToArray(); } }