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authorElliott Hughes <enh@google.com>2020-12-03 16:43:05 +0000
committerAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>2020-12-03 16:43:05 +0000
commitb0fadb53dd47e7655bec1fbf3e4d85d62b6f3a19 (patch)
tree26effec72dbace7671158aeddc9fde1e3e9cd1a9 /java/TJExample.java
parentd18a8889775997a93d953367dc2d71af85ed9f5d (diff)
parent98e581f8227b9846b7adc92c0c63f5ed2384ff4b (diff)
Switch to chromium upstream. am: 98e581f822
Original change: https://android-review.googlesource.com/c/platform/external/libjpeg-turbo/+/1515004 Change-Id: Idbd5264fe0fb45c94218794d9a27d78b0daeb185
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-/*
- * Copyright (C)2011-2012, 2014-2015, 2017-2018 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.
- */
-
-/*
- * This program demonstrates how to compress, decompress, and transform JPEG
- * images using the TurboJPEG Java API
- */
-
-import java.io.*;
-import java.awt.*;
-import java.awt.image.*;
-import java.nio.*;
-import javax.imageio.*;
-import javax.swing.*;
-import org.libjpegturbo.turbojpeg.*;
-
-
-@SuppressWarnings("checkstyle:JavadocType")
-class TJExample implements TJCustomFilter {
-
- static final String CLASS_NAME =
- new TJExample().getClass().getName();
-
- static final int DEFAULT_SUBSAMP = TJ.SAMP_444;
- static final int DEFAULT_QUALITY = 95;
-
-
- static final String[] SUBSAMP_NAME = {
- "4:4:4", "4:2:2", "4:2:0", "Grayscale", "4:4:0", "4:1:1"
- };
-
- static final String[] COLORSPACE_NAME = {
- "RGB", "YCbCr", "GRAY", "CMYK", "YCCK"
- };
-
-
- /* DCT filter example. This produces a negative of the image. */
-
- @SuppressWarnings("checkstyle:JavadocMethod")
- public void customFilter(ShortBuffer coeffBuffer, Rectangle bufferRegion,
- Rectangle planeRegion, int componentIndex,
- int transformIndex, TJTransform transform)
- throws TJException {
- for (int i = 0; i < bufferRegion.width * bufferRegion.height; i++) {
- coeffBuffer.put(i, (short)(-coeffBuffer.get(i)));
- }
- }
-
-
- static void usage() throws Exception {
- System.out.println("\nUSAGE: java [Java options] " + CLASS_NAME +
- " <Input image> <Output image> [options]\n");
-
- System.out.println("Input and output images can be in any image format that the Java Image I/O");
- System.out.println("extensions understand. If either filename ends in a .jpg extension, then");
- System.out.println("the TurboJPEG API will be used to compress or decompress the image.\n");
-
- System.out.println("Compression Options (used if the output image is a JPEG image)");
- System.out.println("--------------------------------------------------------------\n");
-
- System.out.println("-subsamp <444|422|420|gray> = Apply this level of chrominance subsampling when");
- System.out.println(" compressing the output image. The default is to use the same level of");
- System.out.println(" subsampling as in the input image, if the input image is also a JPEG");
- System.out.println(" image, or to use grayscale if the input image is a grayscale non-JPEG");
- System.out.println(" image, or to use " +
- SUBSAMP_NAME[DEFAULT_SUBSAMP] +
- " subsampling otherwise.\n");
-
- System.out.println("-q <1-100> = Compress the output image with this JPEG quality level");
- System.out.println(" (default = " + DEFAULT_QUALITY + ").\n");
-
- System.out.println("Decompression Options (used if the input image is a JPEG image)");
- System.out.println("---------------------------------------------------------------\n");
-
- System.out.println("-scale M/N = Scale the input image by a factor of M/N when decompressing it.");
- System.out.print("(M/N = ");
- for (int i = 0; i < SCALING_FACTORS.length; i++) {
- System.out.print(SCALING_FACTORS[i].getNum() + "/" +
- SCALING_FACTORS[i].getDenom());
- if (SCALING_FACTORS.length == 2 && i != SCALING_FACTORS.length - 1)
- System.out.print(" or ");
- else if (SCALING_FACTORS.length > 2) {
- if (i != SCALING_FACTORS.length - 1)
- System.out.print(", ");
- if (i == SCALING_FACTORS.length - 2)
- System.out.print("or ");
- }
- }
- System.out.println(")\n");
-
- System.out.println("-hflip, -vflip, -transpose, -transverse, -rot90, -rot180, -rot270 =");
- System.out.println(" Perform one of these lossless transform operations on the input image");
- System.out.println(" prior to decompressing it (these options are mutually exclusive.)\n");
-
- System.out.println("-grayscale = Perform lossless grayscale conversion on the input image prior");
- System.out.println(" to decompressing it (can be combined with the other transform operations");
- System.out.println(" above.)\n");
-
- System.out.println("-crop WxH+X+Y = Perform lossless cropping on the input image prior to");
- System.out.println(" decompressing it. X and Y specify the upper left corner of the cropping");
- System.out.println(" region, and W and H specify the width and height of the cropping region.");
- System.out.println(" X and Y must be evenly divible by the MCU block size (8x8 if the input");
- System.out.println(" image was compressed using no subsampling or grayscale, 16x8 if it was");
- System.out.println(" compressed using 4:2:2 subsampling, or 16x16 if it was compressed using");
- System.out.println(" 4:2:0 subsampling.)\n");
-
- System.out.println("General Options");
- System.out.println("---------------\n");
-
- System.out.println("-display = Display output image (Output filename need not be specified in this");
- System.out.println(" case.)\n");
-
- System.out.println("-fastupsample = Use the fastest chrominance upsampling algorithm available in");
- System.out.println(" the underlying codec.\n");
-
- System.out.println("-fastdct = Use the fastest DCT/IDCT algorithms available in the underlying");
- System.out.println(" codec.\n");
-
- System.out.println("-accuratedct = Use the most accurate DCT/IDCT algorithms available in the");
- System.out.println(" underlying codec.\n");
-
- System.exit(1);
- }
-
-
- public static void main(String[] argv) {
-
- try {
-
- TJScalingFactor scalingFactor = new TJScalingFactor(1, 1);
- int outSubsamp = -1, outQual = -1;
- TJTransform xform = new TJTransform();
- boolean display = false;
- int flags = 0;
- int width, height;
- String inFormat = "jpg", outFormat = "jpg";
- BufferedImage img = null;
- byte[] imgBuf = null;
-
- if (argv.length < 2)
- usage();
-
- if (argv[1].substring(0, 2).equalsIgnoreCase("-d"))
- display = true;
-
- /* Parse arguments. */
- for (int i = 2; i < argv.length; i++) {
- if (argv[i].length() < 2)
- continue;
- else if (argv[i].length() > 2 &&
- argv[i].substring(0, 3).equalsIgnoreCase("-sc") &&
- i < argv.length - 1) {
- int match = 0;
- String[] scaleArg = argv[++i].split("/");
- if (scaleArg.length == 2) {
- TJScalingFactor tempsf =
- new TJScalingFactor(Integer.parseInt(scaleArg[0]),
- Integer.parseInt(scaleArg[1]));
- for (int j = 0; j < SCALING_FACTORS.length; j++) {
- if (tempsf.equals(SCALING_FACTORS[j])) {
- scalingFactor = SCALING_FACTORS[j];
- match = 1;
- break;
- }
- }
- }
- if (match != 1)
- usage();
- } else if (argv[i].length() > 2 &&
- argv[i].substring(0, 3).equalsIgnoreCase("-su") &&
- i < argv.length - 1) {
- i++;
- if (argv[i].substring(0, 1).equalsIgnoreCase("g"))
- outSubsamp = TJ.SAMP_GRAY;
- else if (argv[i].equals("444"))
- outSubsamp = TJ.SAMP_444;
- else if (argv[i].equals("422"))
- outSubsamp = TJ.SAMP_422;
- else if (argv[i].equals("420"))
- outSubsamp = TJ.SAMP_420;
- else
- usage();
- } else if (argv[i].substring(0, 2).equalsIgnoreCase("-q") &&
- i < argv.length - 1) {
- outQual = Integer.parseInt(argv[++i]);
- if (outQual < 1 || outQual > 100)
- usage();
- } else if (argv[i].substring(0, 2).equalsIgnoreCase("-g"))
- xform.options |= TJTransform.OPT_GRAY;
- else if (argv[i].equalsIgnoreCase("-hflip"))
- xform.op = TJTransform.OP_HFLIP;
- else if (argv[i].equalsIgnoreCase("-vflip"))
- xform.op = TJTransform.OP_VFLIP;
- else if (argv[i].equalsIgnoreCase("-transpose"))
- xform.op = TJTransform.OP_TRANSPOSE;
- else if (argv[i].equalsIgnoreCase("-transverse"))
- xform.op = TJTransform.OP_TRANSVERSE;
- else if (argv[i].equalsIgnoreCase("-rot90"))
- xform.op = TJTransform.OP_ROT90;
- else if (argv[i].equalsIgnoreCase("-rot180"))
- xform.op = TJTransform.OP_ROT180;
- else if (argv[i].equalsIgnoreCase("-rot270"))
- xform.op = TJTransform.OP_ROT270;
- else if (argv[i].equalsIgnoreCase("-custom"))
- xform.cf = new TJExample();
- else if (argv[i].length() > 2 &&
- argv[i].substring(0, 2).equalsIgnoreCase("-c") &&
- i < argv.length - 1) {
- String[] cropArg = argv[++i].split("[x\\+]");
- if (cropArg.length != 4)
- usage();
- xform.width = Integer.parseInt(cropArg[0]);
- xform.height = Integer.parseInt(cropArg[1]);
- xform.x = Integer.parseInt(cropArg[2]);
- xform.y = Integer.parseInt(cropArg[3]);
- if (xform.x < 0 || xform.y < 0 || xform.width < 1 ||
- xform.height < 1)
- usage();
- xform.options |= TJTransform.OPT_CROP;
- } else if (argv[i].substring(0, 2).equalsIgnoreCase("-d"))
- display = true;
- else if (argv[i].equalsIgnoreCase("-fastupsample")) {
- System.out.println("Using fast upsampling code");
- flags |= TJ.FLAG_FASTUPSAMPLE;
- } else if (argv[i].equalsIgnoreCase("-fastdct")) {
- System.out.println("Using fastest DCT/IDCT algorithm");
- flags |= TJ.FLAG_FASTDCT;
- } else if (argv[i].equalsIgnoreCase("-accuratedct")) {
- System.out.println("Using most accurate DCT/IDCT algorithm");
- flags |= TJ.FLAG_ACCURATEDCT;
- } else usage();
- }
-
- /* Determine input and output image formats based on file extensions. */
- String[] inFileTokens = argv[0].split("\\.");
- if (inFileTokens.length > 1)
- inFormat = inFileTokens[inFileTokens.length - 1];
- String[] outFileTokens;
- if (display)
- outFormat = "bmp";
- else {
- outFileTokens = argv[1].split("\\.");
- if (outFileTokens.length > 1)
- outFormat = outFileTokens[outFileTokens.length - 1];
- }
-
- if (inFormat.equalsIgnoreCase("jpg")) {
- /* Input image is a JPEG image. Decompress and/or transform it. */
- boolean doTransform = (xform.op != TJTransform.OP_NONE ||
- xform.options != 0 || xform.cf != null);
-
- /* Read the JPEG file into memory. */
- File jpegFile = new File(argv[0]);
- FileInputStream fis = new FileInputStream(jpegFile);
- int jpegSize = fis.available();
- if (jpegSize < 1) {
- System.out.println("Input file contains no data");
- System.exit(1);
- }
- byte[] jpegBuf = new byte[jpegSize];
- fis.read(jpegBuf);
- fis.close();
-
- TJDecompressor tjd;
- if (doTransform) {
- /* Transform it. */
- TJTransformer tjt = new TJTransformer(jpegBuf);
- TJTransform[] xforms = new TJTransform[1];
- xforms[0] = xform;
- xforms[0].options |= TJTransform.OPT_TRIM;
- TJDecompressor[] tjds = tjt.transform(xforms, 0);
- tjd = tjds[0];
- tjt.close();
- } else
- tjd = new TJDecompressor(jpegBuf);
-
- width = tjd.getWidth();
- height = tjd.getHeight();
- int inSubsamp = tjd.getSubsamp();
- int inColorspace = tjd.getColorspace();
-
- System.out.println((doTransform ? "Transformed" : "Input") +
- " Image (jpg): " + width + " x " + height +
- " pixels, " + SUBSAMP_NAME[inSubsamp] +
- " subsampling, " + COLORSPACE_NAME[inColorspace]);
-
- if (outFormat.equalsIgnoreCase("jpg") && doTransform &&
- scalingFactor.isOne() && outSubsamp < 0 && outQual < 0) {
- /* Input image has been transformed, and no re-compression options
- have been selected. Write the transformed image to disk and
- exit. */
- File outFile = new File(argv[1]);
- FileOutputStream fos = new FileOutputStream(outFile);
- fos.write(tjd.getJPEGBuf(), 0, tjd.getJPEGSize());
- fos.close();
- System.exit(0);
- }
-
- /* Scaling and/or a non-JPEG output image format and/or compression
- options have been selected, so we need to decompress the
- input/transformed image. */
- width = scalingFactor.getScaled(width);
- height = scalingFactor.getScaled(height);
- if (outSubsamp < 0)
- outSubsamp = inSubsamp;
-
- if (!outFormat.equalsIgnoreCase("jpg"))
- img = tjd.decompress(width, height, BufferedImage.TYPE_INT_RGB,
- flags);
- else
- imgBuf = tjd.decompress(width, 0, height, TJ.PF_BGRX, flags);
- tjd.close();
- } else {
- /* Input image is not a JPEG image. Load it into memory. */
- img = ImageIO.read(new File(argv[0]));
- if (img == null)
- throw new Exception("Input image type not supported.");
- width = img.getWidth();
- height = img.getHeight();
- if (outSubsamp < 0) {
- if (img.getType() == BufferedImage.TYPE_BYTE_GRAY)
- outSubsamp = TJ.SAMP_GRAY;
- else
- outSubsamp = DEFAULT_SUBSAMP;
- }
- System.out.println("Input Image: " + width + " x " + height +
- " pixels");
- }
- System.gc();
- if (!display)
- System.out.print("Output Image (" + outFormat + "): " + width +
- " x " + height + " pixels");
-
- if (display) {
- /* Display the uncompressed image */
- ImageIcon icon = new ImageIcon(img);
- JLabel label = new JLabel(icon, JLabel.CENTER);
- JOptionPane.showMessageDialog(null, label, "Output Image",
- JOptionPane.PLAIN_MESSAGE);
- } else if (outFormat.equalsIgnoreCase("jpg")) {
- /* Output image format is JPEG. Compress the uncompressed image. */
- if (outQual < 0)
- outQual = DEFAULT_QUALITY;
- System.out.println(", " + SUBSAMP_NAME[outSubsamp] +
- " subsampling, quality = " + outQual);
-
- TJCompressor tjc = new TJCompressor();
- tjc.setSubsamp(outSubsamp);
- tjc.setJPEGQuality(outQual);
- if (img != null)
- tjc.setSourceImage(img, 0, 0, 0, 0);
- else
- tjc.setSourceImage(imgBuf, 0, 0, width, 0, height, TJ.PF_BGRX);
- byte[] jpegBuf = tjc.compress(flags);
- int jpegSize = tjc.getCompressedSize();
- tjc.close();
-
- /* Write the JPEG image to disk. */
- File outFile = new File(argv[1]);
- FileOutputStream fos = new FileOutputStream(outFile);
- fos.write(jpegBuf, 0, jpegSize);
- fos.close();
- } else {
- /* Output image format is not JPEG. Save the uncompressed image
- directly to disk. */
- System.out.print("\n");
- File outFile = new File(argv[1]);
- ImageIO.write(img, outFormat, outFile);
- }
-
- } catch (Exception e) {
- e.printStackTrace();
- System.exit(-1);
- }
- }
-
- static final TJScalingFactor[] SCALING_FACTORS =
- TJ.getScalingFactors();
-};