e85730157e
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@501 632fc199-4ca6-4c93-a231-07263d6284db
91 lines
3.4 KiB
Java
91 lines
3.4 KiB
Java
/*
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* Copyright (C)2011 D. R. Commander. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the libjpeg-turbo Project nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.libjpegturbo.turbojpeg;
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public class TJTransformer extends TJDecompressor {
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public TJTransformer() throws Exception {
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init();
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}
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public TJTransformer(byte[] buf) throws Exception {
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init();
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setJPEGBuffer(buf, buf.length);
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}
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public TJTransformer(byte[] buf, int bufSize) throws Exception {
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init();
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setJPEGBuffer(buf, bufSize);
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}
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public void transform(byte[][] dstBufs, TJTransform[] transforms,
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int flags) throws Exception {
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if(jpegBuf == null) throw new Exception("JPEG buffer not initialized");
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transformedSizes = transform(jpegBuf, jpegBufSize, dstBufs, transforms,
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flags);
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}
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public TJDecompressor[] transform(TJTransform[] transforms, int flags)
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throws Exception {
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byte[][] dstBufs = new byte[transforms.length][];
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if(jpegWidth < 1 || jpegHeight < 1)
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throw new Exception("JPEG buffer not initialized");
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for(int i = 0; i < transforms.length; i++) {
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int w = jpegWidth, h = jpegHeight;
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if((transforms[i].options & TJ.XFORM_CROP) != 0) {
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if(transforms[i].width != 0) w = transforms[i].width;
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if(transforms[i].height != 0) h = transforms[i].height;
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}
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dstBufs[i] = new byte[TJ.bufSize(w, h)];
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}
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TJDecompressor[] tjd = new TJDecompressor[transforms.length];
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transform(dstBufs, transforms, flags);
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for(int i = 0; i < transforms.length; i++)
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tjd[i] = new TJDecompressor(dstBufs[i], transformedSizes[i]);
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return tjd;
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}
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public int[] getTransformedSizes() throws Exception {
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if(transformedSizes == null)
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throw new Exception("No image has been transformed yet");
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return transformedSizes;
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}
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private native void init() throws Exception;
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private native int[] transform(byte[] srcBuf, int srcSize, byte[][] dstBufs,
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TJTransform[] transforms, int flags) throws Exception;
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static {
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System.loadLibrary("turbojpeg");
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}
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private int[] transformedSizes = null;
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};
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