From d518970039a19a2a9b6d2bdd592cc88a43897bbb Mon Sep 17 00:00:00 2001
From: Mathieu Malaterre <mathieu.malaterre@gmail.com>
Date: Fri, 28 Sep 2012 08:11:41 +0000
Subject: [trunk] Start FolderReorgProposal task

Update issue 177
---
 .../org/openJpeg/OpenJPEGJavaEncoder.java          | 338 +++++++++++++++++++++
 1 file changed, 338 insertions(+)
 create mode 100644 wrapping/java/openjp2/java-sources/org/openJpeg/OpenJPEGJavaEncoder.java

(limited to 'wrapping/java/openjp2/java-sources/org/openJpeg/OpenJPEGJavaEncoder.java')

diff --git a/wrapping/java/openjp2/java-sources/org/openJpeg/OpenJPEGJavaEncoder.java b/wrapping/java/openjp2/java-sources/org/openJpeg/OpenJPEGJavaEncoder.java
new file mode 100644
index 00000000..2c638cfa
--- /dev/null
+++ b/wrapping/java/openjp2/java-sources/org/openJpeg/OpenJPEGJavaEncoder.java
@@ -0,0 +1,338 @@
+/*
+ * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2007, Professor Benoit Macq
+ * Copyright (c) 2002-2007, Patrick Piscaglia, Telemis s.a.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */  
+package org.openJpeg;
+
+import java.io.File;
+import java.util.Vector;
+
+/** This class encodes one image into the J2K format, 
+ * using the OpenJPEG.org library.
+ * To be able to log messages, the called must register a IJavaJ2KEncoderLogger object.
+ */
+public class OpenJPEGJavaEncoder {
+
+	public interface IJavaJ2KEncoderLogger {
+		public void logEncoderMessage(String message);
+		public void logEncoderError(String message);
+	}
+	
+    private static boolean isInitialized = false;
+    
+	// ===== Compression parameters =============>
+	// These value may be changed for each image
+    private String[] encoder_arguments = null;
+	/** number of resolutions decompositions */
+	private int nbResolutions = -1;
+	/** the quality layers, expressed as compression rate */
+	private float[] ratioLayers = null;
+	/** the quality layers, expressed as PSNR values. This variable, if defined, has priority over the ratioLayers variable */
+	private float[] psnrLayers = null;
+	
+	/** Contains the 8 bpp version of the image. May NOT be filled together with image16 or image24.<P>
+	 * We store the 8 or 16 bpp version of the original image while the encoder uses a 32 bpp version, because <UL>
+	 * <LI> the storage capacity required is smaller
+	 * <LI> the transfer Java --> C will be faster
+	 * <LI> the conversion byte/short ==> int will be done faster by the C
+	 * </UL>*/
+	private byte[] image8 = null;
+	/** Contains the 16 bpp version of the image. May NOT be filled together with image8 or image24*/
+	private short[] image16 = null;
+	/** Contains the 24 bpp version of the image. May NOT be filled together with image8 or image16 */
+	private int[] image24 = null;
+	/** Holds the result of the compression, i.e. the J2K compressed bytecode */
+    private byte compressedStream[] = null;
+    /** Holds the compressed stream length, which may be smaller than compressedStream.length if this byte[] is pre-allocated */
+    private long compressedStreamLength = -1;
+    /** Holds the compressed version of the index file, returned by the encoder */
+    private byte compressedIndex[] = null;
+    /** Width and Height of the image */
+    private int width = -1;
+    private int height = -1;
+    private int depth = -1;
+    /** Tile size. We suppose the same size for the horizontal and vertical tiles.
+     * If size == -1 ==> no tiling */
+    private int tileSize = -1;
+    // <===== Compression parameters =============
+    
+    private Vector<IJavaJ2KEncoderLogger> loggers = new Vector();
+
+    public OpenJPEGJavaEncoder(String openJPEGlibraryFullPathAndName, IJavaJ2KEncoderLogger messagesAndErrorsLogger) throws ExceptionInInitializerError
+    {
+    	this(openJPEGlibraryFullPathAndName);
+    	loggers.addElement(messagesAndErrorsLogger);
+    }
+
+    public OpenJPEGJavaEncoder(String openJPEGlibraryFullPathAndName) throws ExceptionInInitializerError
+    {
+    	if (!isInitialized) {
+    		try {
+    			String absolutePath = (new File(openJPEGlibraryFullPathAndName)).getCanonicalPath();
+    			System.load(absolutePath);
+    			isInitialized = true;
+    		} catch (Throwable t) {
+    			t.printStackTrace();
+    			throw new ExceptionInInitializerError("OpenJPEG Java Encoder: probably impossible to find the C library");
+    		}
+    	}
+    }
+    
+    public void addLogger(IJavaJ2KEncoderLogger messagesAndErrorsLogger) {
+    	loggers.addElement(messagesAndErrorsLogger);
+    }
+    
+    public void removeLogger(IJavaJ2KEncoderLogger messagesAndErrorsLogger) {
+    	loggers.removeElement(messagesAndErrorsLogger);
+    }
+    
+    /** This method compresses the given image.<P>
+     * It returns the compressed J2K codestream into the compressedStream byte[].<P>
+     * It also returns the compression index as a compressed form, into the compressedIndex byte[].<P>
+     * One of the image8, image16 or image24 arrays must be correctly initialized and filled.<P>
+     * The width, height and depth variables must be correctly filled.<P>
+     * The nbResolutions, nbLayers and if needed the float[] psnrLayers or ratioLayers must also be filled before calling this method.
+     */
+    public void encodeImageToJ2K() {
+		// Need to allocate / reallocate the compressed stream buffer ? (size = max possible size = original image size)
+		if (compressedStream== null || (compressedStream.length != width*height*depth/8)) {
+			logMessage("OpenJPEGJavaEncoder.encodeImageToJ2K: (re-)allocating " + (width*height*depth/8) + " bytes for the compressedStream");
+			compressedStream = new byte[width*height*depth/8];
+		}
+		// Arguments = 
+		// - number of resolutions "-n 5" : 2
+		// - size of tile "-t 512,512" : 2
+		// 
+		// Image width, height, depth and pixels are directly fetched by C from the Java class
+		int nbArgs = 2 + (tileSize == -1 ? 0 : 2) + (encoder_arguments != null ? encoder_arguments.length : 0);
+		if (psnrLayers != null && psnrLayers.length>0 && psnrLayers[0] != 0)
+			// If psnrLayers is defined and doesn't just express "lossless"
+			nbArgs += 2;
+		else if (ratioLayers != null && ratioLayers.length>0 && ratioLayers[0]!=0.0)
+			nbArgs += 2;
+		String[] arguments = new String[nbArgs];
+		int offset = 0;
+		arguments[offset] = "-n"; arguments[offset+1] = "" + nbResolutions; offset += 2;
+		if (tileSize!= -1) {
+			arguments[offset++] = "-t"; 
+			arguments[offset++] = "" + tileSize + "," + tileSize;
+		}
+		// If PSNR layers are defined, use them to encode the images
+		if (psnrLayers != null && psnrLayers.length>0 && psnrLayers[0]!=-1) {
+			arguments[offset++] = "-q";
+			String s = "";
+			for (int i=0; i<psnrLayers.length; i++)
+				s += psnrLayers[i] + ",";
+			arguments[offset++] = s.substring(0, s.length()-1);
+		} else if (ratioLayers != null && ratioLayers.length>0 && ratioLayers[0]!=0.0) {
+			// Specify quality ratioLayers, as compression ratios
+			arguments[offset++] = "-r";
+			String s = "";
+			for (int i=0; i<ratioLayers.length; i++)
+				s += ratioLayers[i] + ",";
+			arguments[offset++] = s.substring(0, s.length()-1);
+		}
+		if (encoder_arguments != null) {
+			for (int i=0; i<encoder_arguments.length; i++) {
+				arguments[i+offset] = encoder_arguments[i];
+			}
+		}
+		logMessage("Encoder additional arguments = " + arrayToString(arguments));
+		long startTime = (new java.util.Date()).getTime();
+		compressedStreamLength = internalEncodeImageToJ2K(arguments);
+		logMessage("compression time = " + ((new java.util.Date()).getTime() - startTime) + " msec");
+    }
+    
+    /** 
+     * Fills the compressedStream byte[] and the compressedIndex byte[]
+     * @return the codestream length.
+     */
+    private native long internalEncodeImageToJ2K(String[] parameters);
+
+    /** Image depth in bpp */
+	public int getDepth() {
+		return depth;
+	}
+
+    /** Image depth in bpp */
+	public void setDepth(int depth) {
+		this.depth = depth;
+	}
+
+	/** Image height in pixels  */
+	public int getHeight() {
+		return height;
+	}
+
+	/** Image height in pixels  */
+	public void setHeight(int height) {
+		this.height = height;
+	}
+
+	/** This method must be called in depth in [9,16].
+	 * @param an array of shorts, containing width*height values
+	 */
+	public void setImage16(short[] image16) {
+		this.image16 = image16;
+	}
+
+	/** This method must be called in depth in [17,24] for RGB images.
+	 * @param an array of int, containing width*height values
+	 */
+	public void setImage24(int[] image24) {
+		this.image24 = image24;
+	}
+
+	/** This method must be called in depth in [1,8].
+	 * @param an array of bytes, containing width*height values
+	 */
+	public void setImage8(byte[] image8) {
+		this.image8 = image8;
+	}
+
+	/** Return the ratioLayers, i.e. the compression ratio for each quality layer.
+	 * If the last value is 0.0, last layer is lossless compressed.
+	 */
+	public float[] getRatioLayers() {
+		return ratioLayers;
+	}
+
+	/**
+	 * sets the quality layers.
+	 * At least one level.
+	 * Each level is expressed as a compression ratio (float).
+	 * If the last value is 0.0, the last layer will be losslessly compressed
+	 */
+	public void setRatioLayers(float[] layers) {
+		this.ratioLayers = layers;
+	}
+
+	/** Return the PSNR Layers, i.e. the target PSNR for each quality layer.
+	 * If the last value is -1, last layer is lossless compressed.
+	 */
+	public float[] getPsnrLayers() {
+		return psnrLayers;
+	}
+
+	/**
+	 * sets the quality layers.
+	 * At least one level.
+	 * Each level is expressed as a target PSNR (float).
+	 * If the last value is -1, the last layer will be losslessly compressed
+	 */
+	public void setPsnrLayers(float[] layers) {
+		this.psnrLayers = layers;
+	}
+
+	/** Set the number of resolutions that must be created */
+	public void setNbResolutions(int nbResolutions) {
+		this.nbResolutions = nbResolutions;
+	}
+
+	public int getWidth() {
+		return width;
+	}
+
+	/** Width of the image, in pixels */
+	public void setWidth(int width) {
+		this.width = width;
+	}
+
+	/** Return the compressed index file.
+	 * Syntax: TODO PP:
+	 */
+	public byte[] getCompressedIndex() {
+		return compressedIndex;
+	}
+	
+	public void setCompressedIndex(byte[] index) {
+		compressedIndex = index;
+	}
+
+	public byte[] getCompressedStream() {
+		return compressedStream;
+	}
+
+	public void reset() {
+		nbResolutions = -1;
+		ratioLayers = null;
+		psnrLayers = null;
+		image8 = null;
+		image16 = null;
+		image24 = null;
+		compressedStream = null;
+	    compressedIndex = null;
+	    width = -1;
+	    height = -1;
+	    depth = -1;
+	}
+
+	public short[] getImage16() {
+		return image16;
+	}
+
+	public int[] getImage24() {
+		return image24;
+	}
+
+	public byte[] getImage8() {
+		return image8;
+	}
+	
+	/** Sets the size of the tiles. We assume square tiles */
+	public void setTileSize(int tileSize) {
+		this.tileSize = tileSize;
+	}
+	
+	/** Contains all the encoding arguments other than the input/output file, compression ratio, tile size */
+	public void setEncoderArguments(String[] argumentsForTheEncoder) {
+		encoder_arguments = argumentsForTheEncoder;
+	}
+
+	public void logMessage(String message) {
+		for (IJavaJ2KEncoderLogger logger:loggers)
+			logger.logEncoderMessage(message);
+	}
+	
+	public void logError(String error) {
+		for (IJavaJ2KEncoderLogger logger:loggers)
+			logger.logEncoderError(error);
+	}
+
+	public long getCompressedStreamLength() {
+		return compressedStreamLength;
+	}
+	
+	private String arrayToString(String[] array) {
+		if (array == null)
+			return "NULL";
+		StringBuffer sb = new StringBuffer();
+		for (int i=0; i<array.length; i++)
+			sb.append(array[i]).append(" ");
+		sb.delete(sb.length()-1, sb.length());
+		return sb.toString();
+	}
+}
-- 
cgit v1.2.3