Examples with TIFFColorConverter it.geosolutions.imageio.plugins.tiff.TIFFColorConverter used on opensource projects

Example 1 with TIFFColorConverter

use of it.geosolutions.imageio.plugins.tiff.TIFFColorConverter in project imageio-ext by geosolutions-it.

the class TIFFImageReader method read.

public BufferedImage read(int imageIndex, ImageReadParam param) throws IOException {
    prepareRead(imageIndex, param);
    // prepare for reading
    this.theImage = getDestination(param, getImageTypes(imageIndex), width, height, noData);
    srcXSubsampling = imageReadParam.getSourceXSubsampling();
    srcYSubsampling = imageReadParam.getSourceYSubsampling();
    Point p = imageReadParam.getDestinationOffset();
    dstXOffset = p.x;
    dstYOffset = p.y;
    // This could probably be made more efficient...
    Rectangle srcRegion = new Rectangle(0, 0, 0, 0);
    Rectangle destRegion = new Rectangle(0, 0, 0, 0);
    computeRegions(imageReadParam, width, height, theImage, srcRegion, destRegion);
    // Initial source pixel, taking source region and source
    // subsamplimg offsets into account
    sourceXOffset = srcRegion.x;
    sourceYOffset = srcRegion.y;
    pixelsToRead = destRegion.width * destRegion.height;
    pixelsRead = 0;
    processImageStarted(imageIndex);
    processImageProgress(0.0f);
    tilesAcross = (width + tileOrStripWidth - 1) / tileOrStripWidth;
    tilesDown = (height + tileOrStripHeight - 1) / tileOrStripHeight;
    // Attempt to get decompressor and color converted from the read param
    TIFFColorConverter colorConverter = null;
    if (imageReadParam instanceof TIFFImageReadParam) {
        TIFFImageReadParam tparam = (TIFFImageReadParam) imageReadParam;
        this.decompressor = tparam.getTIFFDecompressor();
        colorConverter = tparam.getColorConverter();
    }
    // If we didn't find one, use a standard decompressor
    if (this.decompressor == null) {
        if (compression == BaselineTIFFTagSet.COMPRESSION_NONE) {
            // Get the fillOrder field.
            TIFFField fillOrderField = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_FILL_ORDER);
            // Set the decompressor based on the fill order.
            if (fillOrderField != null && fillOrderField.getAsInt(0) == 2) {
                this.decompressor = new TIFFLSBDecompressor();
            } else {
                this.decompressor = new TIFFNullDecompressor();
            }
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_CCITT_T_6) {
            // Try to create the codecLib decompressor.
            if (PackageUtil.isCodecLibAvailable()) {
                try {
                    this.decompressor = new TIFFCodecLibFaxDecompressor(compression);
                    if (DEBUG) {
                        System.out.println("Using codecLib T.6 decompressor");
                    }
                } catch (RuntimeException re) {
                    if (DEBUG) {
                        System.out.println(re);
                    }
                }
            }
            // Fall back to the Java decompressor.
            if (this.decompressor == null) {
                if (DEBUG) {
                    System.out.println("Using Java T.6 decompressor");
                }
                this.decompressor = new TIFFFaxDecompressor();
            }
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_CCITT_T_4) {
            if (PackageUtil.isCodecLibAvailable()) {
                // Try to create the codecLib decompressor.
                try {
                    this.decompressor = new TIFFCodecLibFaxDecompressor(compression);
                    if (DEBUG) {
                        System.out.println("Using codecLib T.4 decompressor");
                    }
                } catch (RuntimeException re) {
                    if (DEBUG) {
                        System.out.println(re);
                    }
                }
            }
            // Fall back to the Java decompressor.
            if (this.decompressor == null) {
                if (DEBUG) {
                    System.out.println("Using Java T.4 decompressor");
                }
                this.decompressor = new TIFFFaxDecompressor();
            }
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_CCITT_RLE) {
            this.decompressor = new TIFFFaxDecompressor();
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_PACKBITS) {
            if (DEBUG) {
                System.out.println("Using TIFFPackBitsDecompressor");
            }
            this.decompressor = new TIFFPackBitsDecompressor();
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_LZW) {
            if (DEBUG) {
                System.out.println("Using TIFFLZWDecompressor");
            }
            TIFFField predictorField = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_PREDICTOR);
            int predictor = ((predictorField == null) ? BaselineTIFFTagSet.PREDICTOR_NONE : predictorField.getAsInt(0));
            this.decompressor = new TIFFLZWDecompressor(predictor);
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_JPEG) {
            this.decompressor = new TIFFJPEGDecompressor();
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_ZLIB || compression == BaselineTIFFTagSet.COMPRESSION_DEFLATE) {
            TIFFField predictorField = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_PREDICTOR);
            int predictor = ((predictorField == null) ? BaselineTIFFTagSet.PREDICTOR_NONE : predictorField.getAsInt(0));
            this.decompressor = new TIFFDeflateDecompressor(predictor);
        } else if (compression == BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
            TIFFField JPEGProcField = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_JPEG_PROC);
            if (JPEGProcField == null) {
                processWarningOccurred("JPEGProc field missing; assuming baseline sequential JPEG process.");
            } else if (JPEGProcField.getAsInt(0) != BaselineTIFFTagSet.JPEG_PROC_BASELINE) {
                throw new IIOException("Old-style JPEG supported for baseline sequential JPEG process only!");
            }
            this.decompressor = new TIFFOldJPEGDecompressor();
        // throw new IIOException("Old-style JPEG not supported!");
        } else {
            throw new IIOException("Unsupported compression type (tag number = " + compression + ")!");
        }
        if (photometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_Y_CB_CR && compression != BaselineTIFFTagSet.COMPRESSION_JPEG && compression != BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
            boolean convertYCbCrToRGB = theImage.getColorModel().getColorSpace().getType() == ColorSpace.TYPE_RGB;
            TIFFDecompressor wrappedDecompressor = this.decompressor instanceof TIFFNullDecompressor ? null : this.decompressor;
            this.decompressor = new TIFFYCbCrDecompressor(wrappedDecompressor, convertYCbCrToRGB);
        }
    }
    if (DEBUG) {
        System.out.println("\nDecompressor class = " + decompressor.getClass().getName() + "\n");
    }
    if (colorConverter == null) {
        if (photometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_CIELAB && theImage.getColorModel().getColorSpace().getType() == ColorSpace.TYPE_RGB) {
            colorConverter = new TIFFCIELabColorConverter();
        } else if (photometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_Y_CB_CR && !(this.decompressor instanceof TIFFYCbCrDecompressor) && compression != BaselineTIFFTagSet.COMPRESSION_JPEG && compression != BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
            colorConverter = new TIFFYCbCrColorConverter(imageMetadata);
        }
    }
    decompressor.setReader(this);
    decompressor.setMetadata(imageMetadata);
    decompressor.setImage(theImage);
    decompressor.setPhotometricInterpretation(photometricInterpretation);
    decompressor.setCompression(compression);
    decompressor.setSamplesPerPixel(samplesPerPixel);
    decompressor.setBitsPerSample(bitsPerSample);
    decompressor.setSampleFormat(sampleFormat);
    decompressor.setExtraSamples(extraSamples);
    decompressor.setColorMap(colorMap);
    decompressor.setColorConverter(colorConverter);
    decompressor.setSourceXOffset(sourceXOffset);
    decompressor.setSourceYOffset(sourceYOffset);
    decompressor.setSubsampleX(srcXSubsampling);
    decompressor.setSubsampleY(srcYSubsampling);
    decompressor.setDstXOffset(dstXOffset);
    decompressor.setDstYOffset(dstYOffset);
    decompressor.setSourceBands(sourceBands);
    decompressor.setDestinationBands(destinationBands);
    // Compute bounds on the tile indices for this source region.
    int minTileX = TIFFImageWriter.XToTileX(srcRegion.x, 0, tileOrStripWidth);
    int minTileY = TIFFImageWriter.YToTileY(srcRegion.y, 0, tileOrStripHeight);
    int maxTileX = TIFFImageWriter.XToTileX(srcRegion.x + srcRegion.width - 1, 0, tileOrStripWidth);
    int maxTileY = TIFFImageWriter.YToTileY(srcRegion.y + srcRegion.height - 1, 0, tileOrStripHeight);
    boolean isAbortRequested = false;
    if (planarConfiguration == BaselineTIFFTagSet.PLANAR_CONFIGURATION_PLANAR) {
        decompressor.setPlanar(true);
        int[] sb = new int[1];
        int[] db = new int[1];
        for (int tj = minTileY; tj <= maxTileY; tj++) {
            for (int ti = minTileX; ti <= maxTileX; ti++) {
                for (int band = 0; band < numBands; band++) {
                    sb[0] = sourceBands[band];
                    decompressor.setSourceBands(sb);
                    db[0] = destinationBands[band];
                    decompressor.setDestinationBands(db);
                    // doing any actual decoding.
                    if (abortRequested()) {
                        isAbortRequested = true;
                        break;
                    }
                    decodeTile(ti, tj, band);
                }
                if (isAbortRequested)
                    break;
                reportProgress();
            }
            if (isAbortRequested)
                break;
        }
    } else {
        for (int tj = minTileY; tj <= maxTileY; tj++) {
            for (int ti = minTileX; ti <= maxTileX; ti++) {
                // doing any actual decoding.
                if (abortRequested()) {
                    isAbortRequested = true;
                    break;
                }
                decodeTile(ti, tj, -1);
                reportProgress();
            }
            if (isAbortRequested)
                break;
        }
    }
    if (isAbortRequested) {
        processReadAborted();
    } else {
        processImageComplete();
    }
    return theImage;
}