diff options
author | dcommander <dcommander@632fc199-4ca6-4c93-a231-07263d6284db> | 2011-03-04 10:13:59 +0000 |
---|---|---|
committer | dcommander <dcommander@632fc199-4ca6-4c93-a231-07263d6284db> | 2011-03-04 10:13:59 +0000 |
commit | d254d3e124bb7124bab3a103ffdb628034ec05c5 (patch) | |
tree | 064bf3d9b8e548cb0719598352a226b397cb1f57 /java/org/libjpegturbo/turbojpeg/TJTransformer.java | |
parent | 274095552756a3c90b777bf63336794004a207b6 (diff) |
Implement lossless cropping interface in Java
git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@501 632fc199-4ca6-4c93-a231-07263d6284db
Diffstat (limited to 'java/org/libjpegturbo/turbojpeg/TJTransformer.java')
-rw-r--r-- | java/org/libjpegturbo/turbojpeg/TJTransformer.java | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/java/org/libjpegturbo/turbojpeg/TJTransformer.java b/java/org/libjpegturbo/turbojpeg/TJTransformer.java new file mode 100644 index 0000000..5978365 --- /dev/null +++ b/java/org/libjpegturbo/turbojpeg/TJTransformer.java @@ -0,0 +1,90 @@ +/* + * Copyright (C)2011 D. R. Commander. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - 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. + * - Neither the name of the libjpeg-turbo Project nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 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 HOLDERS 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.libjpegturbo.turbojpeg; + +public class TJTransformer extends TJDecompressor { + + public TJTransformer() throws Exception { + init(); + } + + public TJTransformer(byte[] buf) throws Exception { + init(); + setJPEGBuffer(buf, buf.length); + } + + public TJTransformer(byte[] buf, int bufSize) throws Exception { + init(); + setJPEGBuffer(buf, bufSize); + } + + public void transform(byte[][] dstBufs, TJTransform[] transforms, + int flags) throws Exception { + if(jpegBuf == null) throw new Exception("JPEG buffer not initialized"); + transformedSizes = transform(jpegBuf, jpegBufSize, dstBufs, transforms, + flags); + } + + public TJDecompressor[] transform(TJTransform[] transforms, int flags) + throws Exception { + byte[][] dstBufs = new byte[transforms.length][]; + if(jpegWidth < 1 || jpegHeight < 1) + throw new Exception("JPEG buffer not initialized"); + for(int i = 0; i < transforms.length; i++) { + int w = jpegWidth, h = jpegHeight; + if((transforms[i].options & TJ.XFORM_CROP) != 0) { + if(transforms[i].width != 0) w = transforms[i].width; + if(transforms[i].height != 0) h = transforms[i].height; + } + dstBufs[i] = new byte[TJ.bufSize(w, h)]; + } + TJDecompressor[] tjd = new TJDecompressor[transforms.length]; + transform(dstBufs, transforms, flags); + for(int i = 0; i < transforms.length; i++) + tjd[i] = new TJDecompressor(dstBufs[i], transformedSizes[i]); + return tjd; + } + + public int[] getTransformedSizes() throws Exception { + if(transformedSizes == null) + throw new Exception("No image has been transformed yet"); + return transformedSizes; + } + + private native void init() throws Exception; + + private native int[] transform(byte[] srcBuf, int srcSize, byte[][] dstBufs, + TJTransform[] transforms, int flags) throws Exception; + + static { + System.loadLibrary("turbojpeg"); + } + + private int[] transformedSizes = null; +}; |