diff options
Diffstat (limited to 'src/java/org/apache/fop/image/analyser/EMFReader.java')
| -rw-r--r-- | src/java/org/apache/fop/image/analyser/EMFReader.java | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/src/java/org/apache/fop/image/analyser/EMFReader.java b/src/java/org/apache/fop/image/analyser/EMFReader.java deleted file mode 100644 index d6e2f2975..000000000 --- a/src/java/org/apache/fop/image/analyser/EMFReader.java +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* $Id$ */ - -package org.apache.fop.image.analyser; - -// Java -import java.io.InputStream; -import java.io.IOException; - -// FOP -import org.apache.fop.image.FopImage; -import org.apache.fop.apps.FOUserAgent; - -/** - * ImageReader object for EMF image type. - * - * @author Peter Herweg - */ -public class EMFReader implements ImageReader { - - /** Length of the EMF header */ - protected static final int EMF_SIG_LENGTH = 88; - - /** offset to signature */ - private static final int SIGNATURE_OFFSET = 40; - /** offset to width */ - private static final int WIDTH_OFFSET = 32; - /** offset to height */ - private static final int HEIGHT_OFFSET = 36; - /** offset to horizontal resolution in pixel */ - private static final int HRES_PIXEL_OFFSET = 72; - /** offset to vertical resolution in pixel */ - private static final int VRES_PIXEL_OFFSET = 76; - /** offset to horizontal resolution in mm */ - private static final int HRES_MM_OFFSET = 80; - /** offset to vertical resolution in mm */ - private static final int VRES_MM_OFFSET = 84; - - /** {@inheritDoc} */ - public FopImage.ImageInfo verifySignature(String uri, InputStream bis, - FOUserAgent ua) throws IOException { - byte[] header = getDefaultHeader(bis); - boolean supported - = ( (header[SIGNATURE_OFFSET + 0] == (byte) 0x20) - && (header[SIGNATURE_OFFSET + 1] == (byte) 0x45) - && (header[SIGNATURE_OFFSET + 2] == (byte) 0x4D) - && (header[SIGNATURE_OFFSET + 3] == (byte) 0x46) ); - - if (supported) { - FopImage.ImageInfo info = getDimension(header); - info.originalURI = uri; - info.mimeType = getMimeType(); - info.inputStream = bis; - return info; - } else { - return null; - } - } - - /** - * Returns the MIME type supported by this implementation. - * - * @return The MIME type - */ - public String getMimeType() { - return "image/emf"; - } - - private FopImage.ImageInfo getDimension(byte[] header) { - FopImage.ImageInfo info = new FopImage.ImageInfo(); - long value = 0; - int byte1; - int byte2; - int byte3; - int byte4; - - // little endian notation - - //resolution - byte1 = header[HRES_MM_OFFSET] & 0xff; - byte2 = header[HRES_MM_OFFSET + 1] & 0xff; - byte3 = header[HRES_MM_OFFSET + 2] & 0xff; - byte4 = header[HRES_MM_OFFSET + 3] & 0xff; - long hresMM = (long) ((byte4 << 24) | (byte3 << 16) | (byte2 << 8) | byte1); - - byte1 = header[VRES_MM_OFFSET] & 0xff; - byte2 = header[VRES_MM_OFFSET + 1] & 0xff; - byte3 = header[VRES_MM_OFFSET + 2] & 0xff; - byte4 = header[VRES_MM_OFFSET + 3] & 0xff; - long vresMM = (long) ((byte4 << 24) | (byte3 << 16) | (byte2 << 8) | byte1); - - byte1 = header[HRES_PIXEL_OFFSET] & 0xff; - byte2 = header[HRES_PIXEL_OFFSET + 1] & 0xff; - byte3 = header[HRES_PIXEL_OFFSET + 2] & 0xff; - byte4 = header[HRES_PIXEL_OFFSET + 3] & 0xff; - long hresPixel = (long) ((byte4 << 24) | (byte3 << 16) | (byte2 << 8) | byte1); - - byte1 = header[VRES_PIXEL_OFFSET] & 0xff; - byte2 = header[VRES_PIXEL_OFFSET + 1] & 0xff; - byte3 = header[VRES_PIXEL_OFFSET + 2] & 0xff; - byte4 = header[VRES_PIXEL_OFFSET + 3] & 0xff; - long vresPixel = (long) ((byte4 << 24) | (byte3 << 16) | (byte2 << 8) | byte1); - - info.dpiHorizontal = hresPixel / (hresMM / 25.4f); - info.dpiVertical = vresPixel / (vresMM / 25.4f); - - //width - byte1 = header[WIDTH_OFFSET] & 0xff; - byte2 = header[WIDTH_OFFSET + 1] & 0xff; - byte3 = header[WIDTH_OFFSET + 2] & 0xff; - byte4 = header[WIDTH_OFFSET + 3] & 0xff; - value = (long) ((byte4 << 24) | (byte3 << 16) - | (byte2 << 8) | byte1); - value = Math.round(value / 100f / 25.4f * info.dpiHorizontal); - info.width = (int) (value & 0xffffffff); - - //height - byte1 = header[HEIGHT_OFFSET] & 0xff; - byte2 = header[HEIGHT_OFFSET + 1] & 0xff; - byte3 = header[HEIGHT_OFFSET + 2] & 0xff; - byte4 = header[HEIGHT_OFFSET + 3] & 0xff; - value = (long) ((byte4 << 24) | (byte3 << 16) | (byte2 << 8) | byte1); - value = Math.round(value / 100f / 25.4f * info.dpiVertical); - info.height = (int) (value & 0xffffffff); - - return info; - } - - private byte[] getDefaultHeader(InputStream imageStream) - throws IOException { - byte[] header = new byte[EMF_SIG_LENGTH]; - try { - imageStream.mark(EMF_SIG_LENGTH + 1); - imageStream.read(header); - imageStream.reset(); - } catch (IOException ex) { - try { - imageStream.reset(); - } catch (IOException exbis) { - // throw the original exception, not this one - } - throw ex; - } - return header; - } -} |