| /* |
| * Copyright (C)2011-2012, 2014-2015, 2017-2018, 2022-2024 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 use the TurboJPEG Java API to approximate |
| * the functionality of the IJG's cjpeg program. cjpeg features that are not |
| * covered: |
| * |
| * - GIF and Targa input file formats [legacy feature] |
| * - Separate quality settings for luminance and chrominance |
| * - The floating-point DCT method [legacy feature] |
| * - Input image smoothing |
| * - Progress reporting |
| * - Debug output |
| * - Forcing baseline-compatible quantization tables |
| * - Specifying arbitrary quantization tables |
| * - Specifying arbitrary sampling factors |
| * - Scan scripts |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| import org.libjpegturbo.turbojpeg.*; |
| |
| |
| @SuppressWarnings("checkstyle:JavadocType") |
| final class TJComp { |
| |
| private TJComp() {} |
| |
| static final String CLASS_NAME = |
| new TJComp().getClass().getName(); |
| |
| static final int DEFAULT_SUBSAMP = TJ.SAMP_420; |
| static final int DEFAULT_QUALITY = 75; |
| |
| |
| static final String[] SUBSAMP_NAME = { |
| "444", "422", "420", "GRAY", "440", "411", "441" |
| }; |
| |
| |
| static void usage() { |
| System.out.println("\nUSAGE: java [Java options] " + CLASS_NAME + |
| " [options] <Input image> <JPEG image>\n"); |
| |
| System.out.println("The input image can be in Windows BMP or PBMPLUS (PPM/PGM) format.\n"); |
| |
| System.out.println("GENERAL OPTIONS (CAN BE ABBREVIATED)"); |
| System.out.println("------------------------------------"); |
| System.out.println("-icc FILE"); |
| System.out.println(" Embed the ICC (International Color Consortium) color management profile"); |
| System.out.println(" from the specified file into the JPEG image"); |
| System.out.println("-lossless PSV[,Pt]"); |
| System.out.println(" Create a lossless JPEG image (implies -subsamp 444) using predictor"); |
| System.out.println(" selection value PSV (1-7) and optional point transform Pt (0 through"); |
| System.out.println(" {data precision} - 1)"); |
| System.out.println("-maxmemory N"); |
| System.out.println(" Memory limit (in megabytes) for intermediate buffers used with progressive"); |
| System.out.println(" JPEG compression, lossless JPEG compression, and Huffman table optimization"); |
| System.out.println(" [default = no limit]"); |
| System.out.println("-precision N"); |
| System.out.println(" Create a JPEG image with N-bit data precision [N = 2..16; default = 8; if N"); |
| System.out.println(" is not 8 or 12, then -lossless must also be specified] (-precision 12"); |
| System.out.println(" implies -optimize unless -arithmetic is also specified)"); |
| System.out.println("-restart N"); |
| System.out.println(" Add a restart marker every N MCU rows [default = 0 (no restart markers)]."); |
| System.out.println(" Append 'B' to specify the restart marker interval in MCUs (lossy only.)\n"); |
| |
| System.out.println("LOSSY JPEG OPTIONS (CAN BE ABBREVIATED)"); |
| System.out.println("---------------------------------------"); |
| System.out.println("-arithmetic"); |
| System.out.println(" Use arithmetic entropy coding instead of Huffman entropy coding (can be"); |
| System.out.println(" combined with -progressive)"); |
| System.out.println("-dct fast"); |
| System.out.println(" Use less accurate DCT algorithm [legacy feature]"); |
| System.out.println("-dct int"); |
| System.out.println(" Use more accurate DCT algorithm [default]"); |
| System.out.println("-grayscale"); |
| System.out.println(" Create a grayscale JPEG image from a full-color input image"); |
| System.out.println("-optimize"); |
| System.out.println(" Use Huffman table optimization"); |
| System.out.println("-progressive"); |
| System.out.println(" Create a progressive JPEG image instead of a single-scan JPEG image (can be"); |
| System.out.println(" combined with -arithmetic; implies -optimize unless -arithmetic is also"); |
| System.out.println(" specified)"); |
| System.out.println("-quality {1..100}"); |
| System.out.format(" Create a JPEG image with the specified quality level [default = %d]\n", |
| DEFAULT_QUALITY); |
| System.out.println("-rgb"); |
| System.out.println(" Create a JPEG image that uses the RGB colorspace instead of the YCbCr"); |
| System.out.println(" colorspace"); |
| System.out.println("-subsamp {444|422|440|420|411|441}"); |
| System.out.println(" Create a JPEG image that uses the specified chrominance subsampling level"); |
| System.out.format(" [default = %s]\n\n", SUBSAMP_NAME[DEFAULT_SUBSAMP]); |
| |
| System.exit(1); |
| } |
| |
| |
| static boolean matchArg(String arg, String string, int minChars) { |
| if (arg.length() > string.length() || arg.length() < minChars) |
| return false; |
| |
| int cmpChars = Math.max(arg.length(), minChars); |
| string = string.substring(0, cmpChars); |
| |
| return arg.equalsIgnoreCase(string); |
| } |
| |
| |
| public static void main(String[] argv) { |
| int exitStatus = 0; |
| TJCompressor tjc = null; |
| FileInputStream fis = null; |
| FileOutputStream fos = null; |
| |
| try { |
| int i; |
| int arithmetic = -1, colorspace = -1, fastDCT = -1, losslessPSV = -1, |
| losslessPt = -1, maxMemory = -1, optimize = -1, |
| pixelFormat = TJ.PF_UNKNOWN, precision = 8, progressive = -1, |
| quality = DEFAULT_QUALITY, restartIntervalBlocks = -1, |
| restartIntervalRows = -1, subsamp = DEFAULT_SUBSAMP; |
| String iccFilename = null; |
| byte[] iccBuf, jpegBuf; |
| |
| for (i = 0; i < argv.length; i++) { |
| if (matchArg(argv[i], "-arithmetic", 2)) |
| arithmetic = 1; |
| else if (matchArg(argv[i], "-dct", 2) && i < argv.length - 1) { |
| i++; |
| if (matchArg(argv[i], "fast", 1)) |
| fastDCT = 1; |
| else if (!matchArg(argv[i], "int", 1)) |
| usage(); |
| } else if (matchArg(argv[i], "-grayscale", 2) || |
| matchArg(argv[i], "-greyscale", 2)) |
| colorspace = TJ.CS_GRAY; |
| else if (matchArg(argv[i], "-icc", 2) && i < argv.length - 1) |
| iccFilename = argv[++i]; |
| else if (matchArg(argv[i], "-lossless", 2) && i < argv.length - 1) { |
| Scanner scanner = new Scanner(argv[++i]).useDelimiter(","); |
| |
| try { |
| if (scanner.hasNextInt()) |
| losslessPSV = scanner.nextInt(); |
| if (scanner.hasNextInt()) |
| losslessPt = scanner.nextInt(); |
| } catch (Exception e) {} |
| |
| if (losslessPSV < 1 || losslessPSV > 7) |
| usage(); |
| } else if (matchArg(argv[i], "-maxmemory", 2) && i < argv.length - 1) { |
| int temp = -1; |
| |
| try { |
| temp = Integer.parseInt(argv[++i]); |
| } catch (NumberFormatException e) {} |
| if (temp < 0) |
| usage(); |
| maxMemory = temp; |
| } else if (matchArg(argv[i], "-optimize", 2) || |
| matchArg(argv[i], "-optimise", 2)) |
| optimize = 1; |
| else if (matchArg(argv[i], "-precision", 4) && i < argv.length - 1) { |
| int temp = 0; |
| |
| try { |
| temp = Integer.parseInt(argv[++i]); |
| } catch (NumberFormatException e) {} |
| if (temp < 2 || temp > 16) |
| usage(); |
| precision = temp; |
| } else if (matchArg(argv[i], "-progressive", 2)) |
| progressive = 1; |
| else if (matchArg(argv[i], "-quality", 2) && i < argv.length - 1) { |
| int temp = 0; |
| |
| try { |
| temp = Integer.parseInt(argv[++i]); |
| } catch (NumberFormatException e) {} |
| if (temp < 1 || temp > 100) |
| usage(); |
| quality = temp; |
| } else if (matchArg(argv[i], "-rgb", 3)) |
| colorspace = TJ.CS_RGB; |
| else if (matchArg(argv[i], "-restart", 2) && i < argv.length - 1) { |
| int temp = -1; |
| String arg = argv[++i]; |
| Scanner scanner = new Scanner(arg).useDelimiter("b|B"); |
| |
| try { |
| temp = scanner.nextInt(); |
| } catch (Exception e) {} |
| |
| if (temp < 0 || temp > 65535 || scanner.hasNext()) |
| usage(); |
| if (arg.endsWith("B") || arg.endsWith("b")) |
| restartIntervalBlocks = temp; |
| else |
| restartIntervalRows = temp; |
| } else if (matchArg(argv[i], "-subsamp", 2) && i < argv.length - 1) { |
| i++; |
| if (matchArg(argv[i], "444", 3)) |
| subsamp = TJ.SAMP_444; |
| else if (matchArg(argv[i], "422", 3)) |
| subsamp = TJ.SAMP_422; |
| else if (matchArg(argv[i], "440", 3)) |
| subsamp = TJ.SAMP_440; |
| else if (matchArg(argv[i], "420", 3)) |
| subsamp = TJ.SAMP_420; |
| else if (matchArg(argv[i], "411", 3)) |
| subsamp = TJ.SAMP_411; |
| else if (matchArg(argv[i], "441", 3)) |
| subsamp = TJ.SAMP_441; |
| else |
| usage(); |
| } else break; |
| } |
| |
| if (i != argv.length - 2) |
| usage(); |
| if (losslessPSV == -1 && precision != 8 && precision != 12) |
| usage(); |
| |
| tjc = new TJCompressor(); |
| |
| tjc.set(TJ.PARAM_QUALITY, quality); |
| tjc.set(TJ.PARAM_SUBSAMP, subsamp); |
| tjc.set(TJ.PARAM_PRECISION, precision); |
| if (fastDCT >= 0) |
| tjc.set(TJ.PARAM_FASTDCT, fastDCT); |
| if (optimize >= 0) |
| tjc.set(TJ.PARAM_OPTIMIZE, optimize); |
| if (progressive >= 0) |
| tjc.set(TJ.PARAM_PROGRESSIVE, progressive); |
| if (arithmetic >= 0) |
| tjc.set(TJ.PARAM_ARITHMETIC, arithmetic); |
| if (losslessPSV >= 1 && losslessPSV <= 7) { |
| tjc.set(TJ.PARAM_LOSSLESS, 1); |
| tjc.set(TJ.PARAM_LOSSLESSPSV, losslessPSV); |
| if (losslessPt >= 0) |
| tjc.set(TJ.PARAM_LOSSLESSPT, losslessPt); |
| } |
| if (restartIntervalBlocks >= 0) |
| tjc.set(TJ.PARAM_RESTARTBLOCKS, restartIntervalBlocks); |
| if (restartIntervalRows >= 0) |
| tjc.set(TJ.PARAM_RESTARTROWS, restartIntervalRows); |
| if (maxMemory >= 0) |
| tjc.set(TJ.PARAM_MAXMEMORY, maxMemory); |
| |
| tjc.loadSourceImage(argv[i], 1, pixelFormat); |
| pixelFormat = tjc.getPixelFormat(); |
| |
| if (pixelFormat == TJ.PF_GRAY && colorspace < 0) |
| colorspace = TJ.CS_GRAY; |
| if (colorspace >= 0) |
| tjc.set(TJ.PARAM_COLORSPACE, colorspace); |
| |
| if (iccFilename != null) { |
| File iccFile = new File(iccFilename); |
| fis = new FileInputStream(iccFile); |
| int iccSize = fis.available(); |
| if (iccSize < 1) |
| throw new Exception("ICC profile contains no data"); |
| iccBuf = new byte[iccSize]; |
| fis.read(iccBuf); |
| fis.close(); fis = null; |
| tjc.setICCProfile(iccBuf); |
| } |
| |
| jpegBuf = tjc.compress(); |
| |
| File outFile = new File(argv[++i]); |
| fos = new FileOutputStream(outFile); |
| fos.write(jpegBuf, 0, tjc.getCompressedSize()); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| exitStatus = -1; |
| } |
| |
| try { |
| if (fis != null) fis.close(); |
| if (fos != null) fos.close(); |
| if (tjc != null) tjc.close(); |
| } catch (Exception e) {} |
| System.exit(exitStatus); |
| } |
| }; |
