Examples with IIOException javax.imageio.IIOException used on opensource projects

Example 21 with IIOException

use of javax.imageio.IIOException in project imageio-ext by geosolutions-it.

the class EmptyImage method locateIFD.

// Locate start of IFD for image.
// Throws IIOException if not at a TIFF header and
// IndexOutOfBoundsException if imageIndex is < -1 or is too big.
private void locateIFD(int imageIndex, long[] ifdpos, long[] ifd) throws IOException {
    if (imageIndex < -1) {
        throw new IndexOutOfBoundsException("imageIndex < -1!");
    }
    long startPos = stream.getStreamPosition();
    stream.seek(headerPosition);
    int byteOrder = stream.readUnsignedShort();
    if (byteOrder == 0x4d4d) {
        stream.setByteOrder(ByteOrder.BIG_ENDIAN);
    } else if (byteOrder == 0x4949) {
        stream.setByteOrder(ByteOrder.LITTLE_ENDIAN);
    } else {
        stream.seek(startPos);
        throw new IIOException("Illegal byte order");
    }
    final int magicNumber = stream.readUnsignedShort();
    if (magicNumber != 42 && magicNumber != 43) {
        stream.seek(startPos);
        throw new IIOException("Illegal magic number");
    }
    if (magicNumber == 43)
        isBtiff = true;
    if (!isBtiff) {
        ifdpos[0] = stream.getStreamPosition();
        ifd[0] = stream.readUnsignedInt();
        if (ifd[0] == 0) {
            // imageIndex has to be >= -1 due to check above.
            if (imageIndex > 0) {
                stream.seek(startPos);
                throw new IndexOutOfBoundsException("imageIndex is greater than the largest available index!");
            }
            return;
        }
        stream.seek(ifd[0]);
        for (int i = 0; imageIndex == -1 || i < imageIndex; i++) {
            int numFields;
            try {
                numFields = stream.readShort();
            } catch (EOFException eof) {
                stream.seek(startPos);
                ifd[0] = 0;
                return;
            }
            stream.skipBytes(12 * numFields);
            ifdpos[0] = stream.getStreamPosition();
            ifd[0] = stream.readUnsignedInt();
            if (ifd[0] == 0) {
                if (imageIndex != -1 && i < imageIndex - 1) {
                    stream.seek(startPos);
                    throw new IndexOutOfBoundsException("imageIndex is greater than the largest available index!");
                }
                break;
            }
            stream.seek(ifd[0]);
        }
    } else {
        short eight = stream.readShort();
        short zero = stream.readShort();
        ifdpos[0] = stream.getStreamPosition();
        ifd[0] = stream.readLong();
        if (ifd[0] == 0) {
            // imageIndex has to be >= -1 due to check above.
            if (imageIndex > 0) {
                stream.seek(startPos);
                throw new IndexOutOfBoundsException("imageIndex is greater than the largest available index!");
            }
            return;
        }
        stream.seek(ifd[0]);
        for (int i = 0; imageIndex == -1 || i < imageIndex; i++) {
            long numFields;
            try {
                numFields = stream.readLong();
            } catch (EOFException eof) {
                stream.seek(startPos);
                ifd[0] = 0;
                return;
            }
            stream.skipBytes(20 * numFields);
            ifdpos[0] = stream.getStreamPosition();
            ifd[0] = stream.readLong();
            if (ifd[0] == 0) {
                if (imageIndex != -1 && i < imageIndex - 1) {
                    stream.seek(startPos);
                    throw new IndexOutOfBoundsException("imageIndex is greater than the largest available index!");
                }
                break;
            }
            stream.seek(ifd[0]);
        }
    }
}

Example 22 with IIOException

use of javax.imageio.IIOException in project imageio-ext by geosolutions-it.

the class NITFReader method getImageReader.

private synchronized nitf.ImageReader getImageReader(int imageIndex) throws IOException {
    checkIndex(imageIndex);
    Integer key = new Integer(imageIndex);
    try {
        if (!imageReaderMap.containsKey(key))
            imageReaderMap.put(key, reader.getNewImageReader(imageIndex));
        return imageReaderMap.get(key);
    } catch (NITFException e) {
        LOGGER.severe(e.getLocalizedMessage());
        throw new IIOException("NITF Exception", e);
    }
}

Example 23 with IIOException

use of javax.imageio.IIOException in project imageio-ext by geosolutions-it.

the class NITFReader method readRaster.

/**
 * Reads image data as bytes for the given region, and writes it to the given writable raster
 *
 * @param sourceRegion
 * @param sourceXSubsampling
 * @param sourceYSubsampling
 * @param bandOffsets
 * @param destinationOffset
 * @param imRas
 * @return Raster
 * @throws IOException
 */
protected void readRaster(int imageIndex, Rectangle sourceRegion, Rectangle destRegion, int sourceXSubsampling, int sourceYSubsampling, int[] bandOffsets, int pixelSize, Point destinationOffset, WritableRaster imRas) throws IOException {
    checkIndex(imageIndex);
    try {
        ImageSubheader subheader = record.getImages()[imageIndex].getSubheader();
        int numCols = subheader.getNumCols().getIntData();
        int numRows = subheader.getNumRows().getIntData();
        // image at once
        if ((destRegion.height * sourceYSubsampling) == numRows && (destRegion.width * sourceXSubsampling) == numCols) {
            readFullImage(imageIndex, destRegion, sourceXSubsampling, sourceYSubsampling, bandOffsets, pixelSize, imRas);
            return;
        } else // the general purpose case
        {
            int colBytes = destRegion.width * pixelSize;
            int dstMinX = imRas.getMinX();
            int dstMaxX = dstMinX + imRas.getWidth() - 1;
            int dstMinY = imRas.getMinY();
            int dstMaxY = dstMinY + imRas.getHeight() - 1;
            // int swap = 0;
            int nBands = subheader.getBandCount();
            /*
                 * NOTE: This is a "fix" that will be removed once the underlying NITRO library gets patched. Currently, if you make a request of a
                 * single band, it doesn't matter which band you request - the data from the first band will be returned regardless. This is obviously
                 * wrong. To thwart this, we will read all bands, then scale down what we return to the user based on their actual request.
                 */
            int[] requestBands = new int[nBands];
            for (int i = 0; i < nBands; ++i) requestBands[i] = i;
            byte[][] rowBuf = new byte[requestBands.length][colBytes];
            // make a SubWindow from the params
            // TODO may want to read by blocks or rows to make faster and
            // more
            // memory efficient
            SubWindow window;
            window = new SubWindow();
            window.setNumBands(requestBands.length);
            window.setBandList(requestBands);
            window.setNumCols(destRegion.width);
            window.setNumRows(1);
            window.setStartCol(sourceRegion.x);
            window.setStartRow(sourceRegion.y);
            // the NITRO library can do the subsampling for us
            if (sourceYSubsampling != 1 || sourceXSubsampling != 1) {
                DownSampler downSampler = new PixelSkipDownSampler(sourceYSubsampling, sourceXSubsampling);
                window.setDownSampler(downSampler);
            }
            // String pixelJustification = record.getImages()[imageIndex]
            // .getSubheader().getPixelJustification().getStringData()
            // .trim();
            // swap = pixelJustification.equals("R") ? 1 : 0;
            List<ByteBuffer> bandBufs = new ArrayList<ByteBuffer>();
            for (int i = 0; i < requestBands.length; ++i) {
                ByteBuffer bandBuf = null;
                bandBuf = ByteBuffer.wrap(rowBuf[i]);
                // bandBuf.order(ByteOrder.nativeOrder());
                // bandBuf.order(swap == 0 ? ByteOrder.BIG_ENDIAN
                // : ByteOrder.LITTLE_ENDIAN);
                bandBufs.add(bandBuf);
            }
            nitf.ImageReader imageReader = getImageReader(imageIndex);
            for (int srcY = 0; srcY < sourceRegion.height; srcY++) {
                if (sourceYSubsampling != 1 && (srcY % sourceYSubsampling) != 0)
                    continue;
                window.setStartRow(sourceRegion.y + srcY);
                // Read the row
                try {
                    imageReader.read(window, rowBuf);
                } catch (NITFException e) {
                    throw new IIOException("Error reading line " + srcY, e);
                }
                // Determine where the row will go in the destination
                int dstY = destinationOffset.y + srcY / sourceYSubsampling;
                if (dstY < dstMinY) {
                    // The row is above imRas
                    continue;
                }
                if (dstY > dstMaxY) {
                    // We're done with the image
                    break;
                }
                // Copy each (subsampled) source pixel into imRas
                for (int srcX = 0, dstX = destinationOffset.x; srcX < colBytes; srcX += pixelSize, dstX++) {
                    if (dstX < dstMinX) {
                        continue;
                    }
                    if (dstX > dstMaxX) {
                        break;
                    }
                    for (int i = 0; i < bandOffsets.length; ++i) {
                        ByteBuffer bandBuf = bandBufs.get(bandOffsets[i]);
                        switch(pixelSize) {
                            case 1:
                                imRas.setSample(dstX, dstY, i, bandBuf.get(srcX));
                                break;
                            case 2:
                                imRas.setSample(dstX, dstY, i, bandBuf.getShort(srcX));
                                break;
                            case 4:
                                imRas.setSample(dstX, dstY, i, bandBuf.getFloat(srcX));
                                break;
                            case 8:
                                imRas.setSample(dstX, dstY, i, bandBuf.getDouble(srcX));
                                break;
                        }
                    }
                }
            }
        }
    } catch (NITFException e1) {
        throw new IOException(e1);
    }
}

Example 24 with IIOException

use of javax.imageio.IIOException in project screenbird by adamhub.

the class Frame method getJPEGBounds.

/** @return the bounds of the image provided.
     * @throws UnsupportedOperationException if the file cannot be read
     * as an image by ImageIO classes.
     * @throws IOException if an error occurred while reading the file
     */
private static Dimension getJPEGBounds(File file) throws IOException, IIOException {
    FileInputStream in = null;
    try {
        //Hack for UNIX machines
        if (MediaUtil.osIsUnix())
            ImageIO.setUseCache(false);
        in = new FileInputStream(file);
        ImageIO.setCacheDirectory(new File(Settings.SCREEN_CAPTURE_DIR));
        ImageInputStream stream = ImageIO.createImageInputStream(in);
        Iterator iter = ImageIO.getImageReaders(stream);
        ImageReader reader = (ImageReader) iter.next();
        String formatName = reader.getFormatName().toLowerCase();
        if (formatName.indexOf("jpeg") == -1 && formatName.indexOf("jpg") == -1) {
            throw new IllegalArgumentException("This image file is not a JPEG image.  This encoder only supports JPEG images.");
        }
        if (reader == null) {
            throw new UnsupportedOperationException("The file \"" + file.getName() + "\" is not a supported image.");
        }
        reader.setInput(stream, false);
        int w = reader.getWidth(0);
        int h = reader.getHeight(0);
        reader.dispose();
        stream.close();
        return new Dimension(w, h);
    } catch (IllegalArgumentException e) {
        log(e);
    } catch (UnsupportedOperationException e) {
        log(e);
    } finally {
        try {
            if (in != null) {
                in.close();
            }
        } catch (Exception e) {
            log(e);
        }
    }
    return null;
}

Example 25 with IIOException

use of javax.imageio.IIOException in project jdk8u_jdk by JetBrains.

the class GIFImageReader method readMetadata.

// Stream must be positioned at start of metadata for 'currIndex'
private void readMetadata() throws IIOException {
    if (stream == null) {
        throw new IllegalStateException("Input not set!");
    }
    try {
        // Create an object to store the image metadata
        this.imageMetadata = new GIFImageMetadata();
        long startPosition = stream.getStreamPosition();
        while (true) {
            int blockType = stream.readUnsignedByte();
            if (blockType == 0x2c) {
                // Image Descriptor
                imageMetadata.imageLeftPosition = stream.readUnsignedShort();
                imageMetadata.imageTopPosition = stream.readUnsignedShort();
                imageMetadata.imageWidth = stream.readUnsignedShort();
                imageMetadata.imageHeight = stream.readUnsignedShort();
                int idPackedFields = stream.readUnsignedByte();
                boolean localColorTableFlag = (idPackedFields & 0x80) != 0;
                imageMetadata.interlaceFlag = (idPackedFields & 0x40) != 0;
                imageMetadata.sortFlag = (idPackedFields & 0x20) != 0;
                int numLCTEntries = 1 << ((idPackedFields & 0x7) + 1);
                if (localColorTableFlag) {
                    // Read color table if any
                    imageMetadata.localColorTable = new byte[3 * numLCTEntries];
                    stream.readFully(imageMetadata.localColorTable);
                } else {
                    imageMetadata.localColorTable = null;
                }
                // Record length of this metadata block
                this.imageMetadataLength = (int) (stream.getStreamPosition() - startPosition);
                // Now positioned at start of LZW-compressed pixels
                return;
            } else if (blockType == 0x21) {
                // Extension block
                int label = stream.readUnsignedByte();
                if (label == 0xf9) {
                    // Graphics Control Extension
                    // 4
                    int gceLength = stream.readUnsignedByte();
                    int gcePackedFields = stream.readUnsignedByte();
                    imageMetadata.disposalMethod = (gcePackedFields >> 2) & 0x3;
                    imageMetadata.userInputFlag = (gcePackedFields & 0x2) != 0;
                    imageMetadata.transparentColorFlag = (gcePackedFields & 0x1) != 0;
                    imageMetadata.delayTime = stream.readUnsignedShort();
                    imageMetadata.transparentColorIndex = stream.readUnsignedByte();
                    int terminator = stream.readUnsignedByte();
                } else if (label == 0x1) {
                    // Plain text extension
                    int length = stream.readUnsignedByte();
                    imageMetadata.hasPlainTextExtension = true;
                    imageMetadata.textGridLeft = stream.readUnsignedShort();
                    imageMetadata.textGridTop = stream.readUnsignedShort();
                    imageMetadata.textGridWidth = stream.readUnsignedShort();
                    imageMetadata.textGridHeight = stream.readUnsignedShort();
                    imageMetadata.characterCellWidth = stream.readUnsignedByte();
                    imageMetadata.characterCellHeight = stream.readUnsignedByte();
                    imageMetadata.textForegroundColor = stream.readUnsignedByte();
                    imageMetadata.textBackgroundColor = stream.readUnsignedByte();
                    imageMetadata.text = concatenateBlocks();
                } else if (label == 0xfe) {
                    // Comment extension
                    byte[] comment = concatenateBlocks();
                    if (imageMetadata.comments == null) {
                        imageMetadata.comments = new ArrayList();
                    }
                    imageMetadata.comments.add(comment);
                } else if (label == 0xff) {
                    // Application extension
                    int blockSize = stream.readUnsignedByte();
                    byte[] applicationID = new byte[8];
                    byte[] authCode = new byte[3];
                    // read available data
                    byte[] blockData = new byte[blockSize];
                    stream.readFully(blockData);
                    int offset = copyData(blockData, 0, applicationID);
                    offset = copyData(blockData, offset, authCode);
                    byte[] applicationData = concatenateBlocks();
                    if (offset < blockSize) {
                        int len = blockSize - offset;
                        byte[] data = new byte[len + applicationData.length];
                        System.arraycopy(blockData, offset, data, 0, len);
                        System.arraycopy(applicationData, 0, data, len, applicationData.length);
                        applicationData = data;
                    }
                    // Init lists if necessary
                    if (imageMetadata.applicationIDs == null) {
                        imageMetadata.applicationIDs = new ArrayList();
                        imageMetadata.authenticationCodes = new ArrayList();
                        imageMetadata.applicationData = new ArrayList();
                    }
                    imageMetadata.applicationIDs.add(applicationID);
                    imageMetadata.authenticationCodes.add(authCode);
                    imageMetadata.applicationData.add(applicationData);
                } else {
                    // Skip over unknown extension blocks
                    int length = 0;
                    do {
                        length = stream.readUnsignedByte();
                        stream.skipBytes(length);
                    } while (length > 0);
                }
            } else if (blockType == 0x3b) {
                // Trailer
                throw new IndexOutOfBoundsException("Attempt to read past end of image sequence!");
            } else {
                throw new IIOException("Unexpected block type " + blockType + "!");
            }
        }
    } catch (IIOException iioe) {
        throw iioe;
    } catch (IOException ioe) {
        throw new IIOException("I/O error reading image metadata!", ioe);
    }
}