--- /dev/null
+/*\r
+ * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium\r
+ * Copyright (c) 2002-2007, Professor Benoit Macq\r
+ * Copyright (c) 2002-2007, Patrick Piscaglia, Telemis s.a.\r
+ * All rights reserved.\r
+ *\r
+ * Redistribution and use in source and binary forms, with or without\r
+ * modification, are permitted provided that the following conditions\r
+ * are met:\r
+ * 1. Redistributions of source code must retain the above copyright\r
+ * notice, this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright\r
+ * notice, this list of conditions and the following disclaimer in the\r
+ * documentation and/or other materials provided with the distribution.\r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'\r
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE\r
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
+ * POSSIBILITY OF SUCH DAMAGE.\r
+ */ \r
+package org.openJpeg;\r
+\r
+import java.util.Vector;\r
+\r
+/** This class decodes one J2K codestream into an image (width + height + depth + pixels[], \r
+ * using the OpenJPEG.org library.\r
+ * To be able to log messages, the called must register a IJavaJ2KDecoderLogger object.\r
+ */\r
+public class OpenJPEGJavaDecoder {\r
+\r
+ public interface IJavaJ2KDecoderLogger {\r
+ public void logDecoderMessage(String message);\r
+ public void logDecoderError(String message);\r
+ }\r
+ \r
+ private static boolean isInitialized = false;\r
+ \r
+ // ===== decompression parameters =============>\r
+ // These value may be changed for each image\r
+ private String[] decoder_arguments = null;\r
+ /** number of resolutions decompositions */\r
+ private int nbResolutions = -1;\r
+ /** the quality layers */\r
+ private int[] layers = null;\r
+\r
+ /** Contains the 8 bpp version of the image. May NOT be filled together with image16 or image24.<P>\r
+ * We store in Java the 8 or 16 bpp version of the image while the decoder uses a 32 bpp version, because <UL>\r
+ * <LI> the storage capacity required is smaller\r
+ * <LI> the transfer Java <-- C will be faster\r
+ * <LI> the conversion byte/short ==> int will be done faster by the C\r
+ * </UL>*/\r
+ private byte[] image8 = null;\r
+ /** Contains the 16 bpp version of the image. May NOT be filled together with image8 or image24*/\r
+ private short[] image16 = null;\r
+ /** Contains the 24 bpp version of the image. May NOT be filled together with image8 or image16 */\r
+ private int[] image24 = null;\r
+ /** Holds the J2K compressed bytecode to decode */\r
+ private byte compressedStream[] = null;\r
+ /** Holds the compressed version of the index file, to be used by the decoder */\r
+ private byte compressedIndex[] = null;\r
+ /** Width and Height of the image */\r
+ private int width = -1;\r
+ private int height = -1;\r
+ private int depth = -1;\r
+ /** This parameter is never used in Java but is read by the C library to know the number of resolutions to skip when decoding, \r
+ * i.e. if there are 5 resolutions and skipped=1 ==> decode until resolution 4. */\r
+ private int skippedResolutions = 0;\r
+ \r
+ private Vector<IJavaJ2KDecoderLogger> loggers = new Vector();\r
+\r
+\r
+ public OpenJPEGJavaDecoder(String openJPEGlibraryFullPathAndName, IJavaJ2KDecoderLogger messagesAndErrorsLogger) throws ExceptionInInitializerError\r
+ {\r
+ this(openJPEGlibraryFullPathAndName);\r
+ loggers.addElement(messagesAndErrorsLogger);\r
+ }\r
+\r
+ public OpenJPEGJavaDecoder(String openJPEGlibraryFullPathAndName) throws ExceptionInInitializerError\r
+ {\r
+ if (!isInitialized) {\r
+ try {\r
+ System.load(openJPEGlibraryFullPathAndName);\r
+ isInitialized = true;\r
+ } catch (Throwable t) {\r
+ throw new ExceptionInInitializerError("OpenJPEG Java Decoder: probably impossible to find the C library");\r
+ }\r
+ }\r
+ }\r
+ \r
+ public void addLogger(IJavaJ2KDecoderLogger messagesAndErrorsLogger) {\r
+ loggers.addElement(messagesAndErrorsLogger);\r
+ }\r
+ \r
+ public void removeLogger(IJavaJ2KDecoderLogger messagesAndErrorsLogger) {\r
+ loggers.removeElement(messagesAndErrorsLogger);\r
+ }\r
+ \r
+ public int decodeJ2KtoImage() {\r
+ if ((image16 == null || (image16 != null && image16.length != width*height)) && (depth==-1 || depth==16)) {\r
+ image16 = new short[width*height];\r
+ logMessage("OpenJPEGJavaDecoder.decompressImage: image16 length = " + image16.length + " (" + width + " x " + height + ") ");\r
+ }\r
+ if ((image8 == null || (image8 != null && image8.length != width*height)) && (depth==-1 || depth==8)) {\r
+ image8 = new byte[width*height];\r
+ logMessage("OpenJPEGJavaDecoder.decompressImage: image8 length = " + image8.length + " (" + width + " x " + height + ") ");\r
+ }\r
+ if ((image24 == null || (image24 != null && image24.length != width*height)) && (depth==-1 || depth==24)) {\r
+ image24 = new int[width*height];\r
+ logMessage("OpenJPEGJavaDecoder.decompressImage: image24 length = " + image24.length + " (" + width + " x " + height + ") ");\r
+ }\r
+ \r
+ String[] arguments = new String[0 + (decoder_arguments != null ? decoder_arguments.length : 0)];\r
+ int offset = 0;\r
+ if (decoder_arguments != null) {\r
+ for (int i=0; i<decoder_arguments.length; i++) {\r
+ arguments[i+offset] = decoder_arguments[i];\r
+ }\r
+ }\r
+\r
+ return internalDecodeJ2KtoImage(arguments);\r
+ }\r
+ \r
+ /** \r
+ * Decode the j2k stream given in the codestream byte[] and fills the image8, image16 or image24 array, according to the bit depth.\r
+ */\r
+ private native int internalDecodeJ2KtoImage(String[] parameters);\r
+\r
+ /** Image depth in bpp */\r
+ public int getDepth() {\r
+ return depth;\r
+ }\r
+\r
+ /** Image depth in bpp */\r
+ public void setDepth(int depth) {\r
+ this.depth = depth;\r
+ }\r
+\r
+ /** Image height in pixels */\r
+ public int getHeight() {\r
+ return height;\r
+ }\r
+\r
+ /** Image height in pixels */\r
+ public void setHeight(int height) {\r
+ this.height = height;\r
+ }\r
+\r
+ /** Number of resolutions contained in the image */\r
+ public int getNbResolutions() {\r
+ return nbResolutions;\r
+ }\r
+\r
+ /** Number of resolutions contained in the image */\r
+ public void setNbResolutions(int nbResolutions) {\r
+ this.nbResolutions = nbResolutions;\r
+ }\r
+\r
+ /** Width of the image in pixels */\r
+ public int getWidth() {\r
+ return width;\r
+ }\r
+\r
+ /** Width of the image in pixels */\r
+ public void setWidth(int width) {\r
+ this.width = width;\r
+ }\r
+\r
+ /** Contains the decompressed version of the image, if the depth in is [9,16] bpp.\r
+ * Returns NULL otherwise.\r
+ */\r
+ public short[] getImage16() {\r
+ return image16;\r
+ }\r
+\r
+ /** Contains the decompressed version of the image, if the depth in is [17,24] bpp and the image is in color.\r
+ * Returns NULL otherwise.\r
+ */\r
+ public int[] getImage24() {\r
+ return image24;\r
+ }\r
+\r
+ /** Contains the decompressed version of the image, if the depth in is [1,8] bpp.\r
+ * Returns NULL otherwise.\r
+ */\r
+ public byte[] getImage8() {\r
+ return image8;\r
+ }\r
+\r
+ /** Sets the compressed version of the index file for this image.\r
+ * This index file is used by the decompressor\r
+ */\r
+ public void setCompressedIndex(byte[] compressedIndex) {\r
+ this.compressedIndex = compressedIndex;\r
+ }\r
+\r
+ /** Sets the codestream to be decoded */\r
+ public void setCompressedStream(byte[] compressedStream) {\r
+ this.compressedStream = compressedStream;\r
+ }\r
+\r
+ /** @return the compressed code stream length, or -1 if not defined */\r
+ public long getCodestreamLength() {\r
+ if (compressedStream == null)\r
+ return -1;\r
+ else return compressedStream.length;\r
+ }\r
+ \r
+ /** This method is called either directly or by the C methods */\r
+ public void logMessage(String message) {\r
+ for (IJavaJ2KDecoderLogger logger:loggers)\r
+ logger.logDecoderMessage(message);\r
+ }\r
+ \r
+ /** This method is called either directly or by the C methods */\r
+ public void logError(String error) {\r
+ for (IJavaJ2KDecoderLogger logger:loggers)\r
+ logger.logDecoderError(error);\r
+ }\r
+\r
+ public void reset() {\r
+ nbResolutions = -1;\r
+ layers = null;\r
+ image8 = null;\r
+ image16 = null;\r
+ image24 = null;\r
+ compressedStream = null;\r
+ compressedIndex = null;\r
+ width = -1;\r
+ height = -1;\r
+ depth = -1;\r
+ }\r
+\r
+ public void setSkippedResolutions(int numberOfSkippedResolutions) {\r
+ skippedResolutions = numberOfSkippedResolutions;\r
+ }\r
+\r
+ /** Contains all the decoding arguments other than the input/output file */\r
+ public void setDecoderArguments(String[] argumentsForTheDecoder) {\r
+ decoder_arguments = argumentsForTheDecoder;\r
+ }\r
+\r
+\r
+}\r
projects / openjpeg.git / blobdiff