Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(299)

Unified Diff: java/org/libjpegturbo/turbojpeg/TJTransformer.java

Issue 1934113002: Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/ (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master
Patch Set: Created 4 years, 8 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
Index: java/org/libjpegturbo/turbojpeg/TJTransformer.java
diff --git a/java/org/libjpegturbo/turbojpeg/TJTransformer.java b/java/org/libjpegturbo/turbojpeg/TJTransformer.java
new file mode 100644
index 0000000000000000000000000000000000000000..d76647fd06224c1a7537e4e788ce4b147caaa53d
--- /dev/null
+++ b/java/org/libjpegturbo/turbojpeg/TJTransformer.java
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C)2011, 2013-2015 D. R. Commander. All Rights Reserved.
+ * Copyright (C)2015 Viktor Szathmáry. 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;
+
+/**
+ * TurboJPEG lossless transformer
+ */
+public class TJTransformer extends TJDecompressor {
+
+ /**
+ * Create a TurboJPEG lossless transformer instance.
+ */
+ public TJTransformer() throws TJException {
+ init();
+ }
+
+ /**
+ * Create a TurboJPEG lossless transformer instance and associate the JPEG
+ * image stored in <code>jpegImage</code> with the newly created instance.
+ *
+ * @param jpegImage JPEG image buffer (size of the JPEG image is assumed to
+ * be the length of the array.) This buffer is not modified.
+ */
+ public TJTransformer(byte[] jpegImage) throws TJException {
+ init();
+ setSourceImage(jpegImage, jpegImage.length);
+ }
+
+ /**
+ * Create a TurboJPEG lossless transformer instance and associate the JPEG
+ * image of length <code>imageSize</code> bytes stored in
+ * <code>jpegImage</code> with the newly created instance.
+ *
+ * @param jpegImage JPEG image buffer. This buffer is not modified.
+ *
+ * @param imageSize size of the JPEG image (in bytes)
+ */
+ public TJTransformer(byte[] jpegImage, int imageSize) throws TJException {
+ init();
+ setSourceImage(jpegImage, imageSize);
+ }
+
+ /**
+ * Losslessly transform the JPEG image associated with this transformer
+ * instance into one or more JPEG images stored in the given destination
+ * buffers. Lossless transforms work by moving the raw coefficients from one
+ * JPEG image structure to another without altering the values of the
+ * coefficients. While this is typically faster than decompressing the
+ * image, transforming it, and re-compressing it, lossless transforms are not
+ * free. Each lossless transform requires reading and performing Huffman
+ * decoding on all of the coefficients in the source image, regardless of the
+ * size of the destination image. Thus, this method provides a means of
+ * generating multiple transformed images from the same source or of applying
+ * multiple transformations simultaneously, in order to eliminate the need to
+ * read the source coefficients multiple times.
+ *
+ * @param dstBufs an array of image buffers. <code>dstbufs[i]</code> will
+ * receive a JPEG image that has been transformed using the parameters in
+ * <code>transforms[i]</code>. Use {@link TJ#bufSize} to determine the
+ * maximum size for each buffer based on the transformed or cropped width and
+ * height and the level of subsampling used in the source image.
+ *
+ * @param transforms an array of {@link TJTransform} instances, each of
+ * which specifies the transform parameters and/or cropping region for the
+ * corresponding transformed output image
+ *
+ * @param flags the bitwise OR of one or more of
+ * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+ */
+ public void transform(byte[][] dstBufs, TJTransform[] transforms,
+ int flags) throws TJException {
+ if (jpegBuf == null)
+ throw new IllegalStateException("JPEG buffer not initialized");
+ transformedSizes = transform(jpegBuf, jpegBufSize, dstBufs, transforms,
+ flags);
+ }
+
+ /**
+ * Losslessly transform the JPEG image associated with this transformer
+ * instance and return an array of {@link TJDecompressor} instances, each of
+ * which has a transformed JPEG image associated with it.
+ *
+ * @param transforms an array of {@link TJTransform} instances, each of
+ * which specifies the transform parameters and/or cropping region for the
+ * corresponding transformed output image
+ *
+ * @return an array of {@link TJDecompressor} instances, each of
+ * which has a transformed JPEG image associated with it.
+ *
+ * @param flags the bitwise OR of one or more of
+ * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+ */
+ public TJDecompressor[] transform(TJTransform[] transforms, int flags)
+ throws TJException {
+ byte[][] dstBufs = new byte[transforms.length][];
+ if (jpegWidth < 1 || jpegHeight < 1)
+ throw new IllegalStateException("JPEG buffer not initialized");
+ for (int i = 0; i < transforms.length; i++) {
+ int w = jpegWidth, h = jpegHeight;
+ if ((transforms[i].options & TJTransform.OPT_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, jpegSubsamp)];
+ }
+ 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;
+ }
+
+ /**
+ * Returns an array containing the sizes of the transformed JPEG images
+ * generated by the most recent transform operation.
+ *
+ * @return an array containing the sizes of the transformed JPEG images
+ * generated by the most recent transform operation.
+ */
+ public int[] getTransformedSizes() {
+ if (transformedSizes == null)
+ throw new IllegalStateException("No image has been transformed yet");
+ return transformedSizes;
+ }
+
+ private native void init() throws TJException;
+
+ private native int[] transform(byte[] srcBuf, int srcSize, byte[][] dstBufs,
+ TJTransform[] transforms, int flags) throws TJException;
+
+ static {
+ TJLoader.load();
+ }
+
+ private int[] transformedSizes = null;
+}

Powered by Google App Engine
This is Rietveld 408576698