Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/

java/TJUnitTest.java

Index: java/TJUnitTest.java
diff --git a/java/TJUnitTest.java b/java/TJUnitTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..444e798530ac1634d8981cdebde989c7c3da1057
--- /dev/null
+++ b/java/TJUnitTest.java
@@ -0,0 +1,970 @@
+/*
+ * Copyright (C)2011-2016 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 tests the various code paths in the TurboJPEG JNI Wrapper
+ */
+
+import java.io.*;
+import java.util.*;
+import java.awt.image.*;
+import javax.imageio.*;
+import java.nio.*;
+import org.libjpegturbo.turbojpeg.*;
+
+public class TJUnitTest {
+
+  private static final String classname =
+    new TJUnitTest().getClass().getName();
+
+  private static void usage() {
+    System.out.println("\nUSAGE: java " + classname + " [options]\n");
+    System.out.println("Options:\n");
+    System.out.println("-yuv = test YUV encoding/decoding support\n");
+    System.out.println("-noyuvpad = do not pad each line of each Y, U, and V plane to the nearest\n");
+    System.out.println("            4-byte boundary\n");
+    System.out.println("-bi = test BufferedImage support\n");
+    System.exit(1);
+  }
+
+  private static final String[] subNameLong = {
+    "4:4:4", "4:2:2", "4:2:0", "GRAY", "4:4:0", "4:1:1"
+  };
+  private static final String[] subName = {
+    "444", "422", "420", "GRAY", "440", "411"
+  };
+
+  private static final String[] pixFormatStr = {
+    "RGB", "BGR", "RGBX", "BGRX", "XBGR", "XRGB", "Grayscale",
+    "RGBA", "BGRA", "ABGR", "ARGB", "CMYK"
+  };
+
+  private static final int[] alphaOffset = {
+    -1, -1, -1, -1, -1, -1, -1, 3, 3, 0, 0, -1
+  };
+
+  private static final int[] _3byteFormats = {
+    TJ.PF_RGB, TJ.PF_BGR
+  };
+  private static final int[] _3byteFormatsBI = {
+    BufferedImage.TYPE_3BYTE_BGR
+  };
+  private static final int[] _4byteFormats = {
+    TJ.PF_RGBX, TJ.PF_BGRX, TJ.PF_XBGR, TJ.PF_XRGB, TJ.PF_CMYK
+  };
+  private static final int[] _4byteFormatsBI = {
+    BufferedImage.TYPE_INT_BGR, BufferedImage.TYPE_INT_RGB,
+    BufferedImage.TYPE_4BYTE_ABGR, BufferedImage.TYPE_4BYTE_ABGR_PRE,
+    BufferedImage.TYPE_INT_ARGB, BufferedImage.TYPE_INT_ARGB_PRE
+  };
+  private static final int[] onlyGray = {
+    TJ.PF_GRAY
+  };
+  private static final int[] onlyGrayBI = {
+    BufferedImage.TYPE_BYTE_GRAY
+  };
+  private static final int[] onlyRGB = {
+    TJ.PF_RGB
+  };
+
+  private static boolean doYUV = false;
+  private static int pad = 4;
+  private static boolean bi = false;
+
+  private static int exitStatus = 0;
+
+  private static int biTypePF(int biType) {
+    ByteOrder byteOrder = ByteOrder.nativeOrder();
+    switch(biType) {
+      case BufferedImage.TYPE_3BYTE_BGR:
+        return TJ.PF_BGR;
+      case BufferedImage.TYPE_4BYTE_ABGR:
+      case BufferedImage.TYPE_4BYTE_ABGR_PRE:
+        return TJ.PF_ABGR;
+      case BufferedImage.TYPE_BYTE_GRAY:
+        return TJ.PF_GRAY;
+      case BufferedImage.TYPE_INT_BGR:
+        if (byteOrder == ByteOrder.BIG_ENDIAN)
+          return TJ.PF_XBGR;
+        else
+          return TJ.PF_RGBX;
+      case BufferedImage.TYPE_INT_RGB:
+        if (byteOrder == ByteOrder.BIG_ENDIAN)
+          return TJ.PF_XRGB;
+        else
+          return TJ.PF_BGRX;
+      case BufferedImage.TYPE_INT_ARGB:
+      case BufferedImage.TYPE_INT_ARGB_PRE:
+        if (byteOrder == ByteOrder.BIG_ENDIAN)
+          return TJ.PF_ARGB;
+        else
+          return TJ.PF_BGRA;
+    }
+    return 0;
+  }
+
+  private static String biTypeStr(int biType) {
+    switch(biType) {
+      case BufferedImage.TYPE_3BYTE_BGR:
+        return "3BYTE_BGR";
+      case BufferedImage.TYPE_4BYTE_ABGR:
+        return "4BYTE_ABGR";
+      case BufferedImage.TYPE_4BYTE_ABGR_PRE:
+        return "4BYTE_ABGR_PRE";
+      case BufferedImage.TYPE_BYTE_GRAY:
+        return "BYTE_GRAY";
+      case BufferedImage.TYPE_INT_BGR:
+        return "INT_BGR";
+      case BufferedImage.TYPE_INT_RGB:
+        return "INT_RGB";
+      case BufferedImage.TYPE_INT_ARGB:
+        return "INT_ARGB";
+      case BufferedImage.TYPE_INT_ARGB_PRE:
+        return "INT_ARGB_PRE";
+    }
+    return "Unknown";
+  }
+
+  private static void initBuf(byte[] buf, int w, int pitch, int h, int pf,
+                              int flags) throws Exception {
+    int roffset = TJ.getRedOffset(pf);
+    int goffset = TJ.getGreenOffset(pf);
+    int boffset = TJ.getBlueOffset(pf);
+    int aoffset = alphaOffset[pf];
+    int ps = TJ.getPixelSize(pf);
+    int index, row, col, halfway = 16;
+
+    if (pf == TJ.PF_GRAY) {
+      Arrays.fill(buf, (byte)0);
+      for (row = 0; row < h; row++) {
+        for (col = 0; col < w; col++) {
+          if ((flags & TJ.FLAG_BOTTOMUP) != 0)
+            index = pitch * (h - row - 1) + col;
+          else
+            index = pitch * row + col;
+          if (((row / 8) + (col / 8)) % 2 == 0)
+            buf[index] = (row < halfway) ? (byte)255 : 0;
+          else
+            buf[index] = (row < halfway) ? 76 : (byte)226;
+        }
+      }
+      return;
+    }
+    if (pf == TJ.PF_CMYK) {
+      Arrays.fill(buf, (byte)255);
+      for (row = 0; row < h; row++) {
+        for (col = 0; col < w; col++) {
+          if ((flags & TJ.FLAG_BOTTOMUP) != 0)
+            index = (h - row - 1) * w + col;
+          else
+            index = row * w + col;
+          if (((row / 8) + (col / 8)) % 2 == 0) {
+            if (row >= halfway) buf[index * ps + 3] = 0;
+          } else {
+            buf[index * ps + 2] = 0;
+            if (row < halfway)
+              buf[index * ps + 1] = 0;
+          }
+        }
+      }
+      return;
+    }
+
+    Arrays.fill(buf, (byte)0);
+    for (row = 0; row < h; row++) {
+      for (col = 0; col < w; col++) {
+        if ((flags & TJ.FLAG_BOTTOMUP) != 0)
+          index = pitch * (h - row - 1) + col * ps;
+        else
+          index = pitch * row + col * ps;
+        if (((row / 8) + (col / 8)) % 2 == 0) {
+          if (row < halfway) {
+            buf[index + roffset] = (byte)255;
+            buf[index + goffset] = (byte)255;
+            buf[index + boffset] = (byte)255;
+          }
+        } else {
+          buf[index + roffset] = (byte)255;
+          if (row >= halfway)
+            buf[index + goffset] = (byte)255;
+        }
+        if (aoffset >= 0)
+          buf[index + aoffset] = (byte)255;
+      }
+    }
+  }
+
+  private static void initIntBuf(int[] buf, int w, int pitch, int h, int pf,
+                                 int flags) throws Exception {
+    int rshift = TJ.getRedOffset(pf) * 8;
+    int gshift = TJ.getGreenOffset(pf) * 8;
+    int bshift = TJ.getBlueOffset(pf) * 8;
+    int ashift = alphaOffset[pf] * 8;
+    int index, row, col, halfway = 16;
+
+    Arrays.fill(buf, 0);
+    for (row = 0; row < h; row++) {
+      for (col = 0; col < w; col++) {
+        if ((flags & TJ.FLAG_BOTTOMUP) != 0)
+          index = pitch * (h - row - 1) + col;
+        else
+          index = pitch * row + col;
+        if (((row / 8) + (col / 8)) % 2 == 0) {
+          if (row < halfway) {
+            buf[index] |= (255 << rshift);
+            buf[index] |= (255 << gshift);
+            buf[index] |= (255 << bshift);
+          }
+        } else {
+          buf[index] |= (255 << rshift);
+          if (row >= halfway)
+            buf[index] |= (255 << gshift);
+        }
+        if (ashift >= 0)
+          buf[index] |= (255 << ashift);
+      }
+    }
+  }
+
+  private static void initImg(BufferedImage img, int pf, int flags)
+                              throws Exception {
+    WritableRaster wr = img.getRaster();
+    int imgType = img.getType();
+    if (imgType == BufferedImage.TYPE_INT_RGB ||
+        imgType == BufferedImage.TYPE_INT_BGR ||
+        imgType == BufferedImage.TYPE_INT_ARGB ||
+        imgType == BufferedImage.TYPE_INT_ARGB_PRE) {
+      SinglePixelPackedSampleModel sm =
+        (SinglePixelPackedSampleModel)img.getSampleModel();
+      int pitch = sm.getScanlineStride();
+      DataBufferInt db = (DataBufferInt)wr.getDataBuffer();
+      int[] buf = db.getData();
+      initIntBuf(buf, img.getWidth(), pitch, img.getHeight(), pf, flags);
+    } else {
+      ComponentSampleModel sm = (ComponentSampleModel)img.getSampleModel();
+      int pitch = sm.getScanlineStride();
+      DataBufferByte db = (DataBufferByte)wr.getDataBuffer();
+      byte[] buf = db.getData();
+      initBuf(buf, img.getWidth(), pitch, img.getHeight(), pf, flags);
+    }
+  }
+
+  private static void checkVal(int row, int col, int v, String vname, int cv)
+                               throws Exception {
+    v = (v < 0) ? v + 256 : v;
+    if (v < cv - 1 || v > cv + 1) {
+      throw new Exception("Comp. " + vname + " at " + row + "," + col +
+                          " should be " + cv + ", not " + v);
+    }
+  }
+
+  private static void checkVal0(int row, int col, int v, String vname)
+                                throws Exception {
+    v = (v < 0) ? v + 256 : v;
+    if (v > 1) {
+      throw new Exception("Comp. " + vname + " at " + row + "," + col +
+                          " should be 0, not " + v);
+    }
+  }
+
+  private static void checkVal255(int row, int col, int v, String vname)
+                                  throws Exception {
+    v = (v < 0) ? v + 256 : v;
+    if (v < 254) {
+      throw new Exception("Comp. " + vname + " at " + row + "," + col +
+                          " should be 255, not " + v);
+    }
+  }
+
+  private static int checkBuf(byte[] buf, int w, int pitch, int h, int pf,
+                              int subsamp, TJScalingFactor sf, int flags)
+                              throws Exception {
+    int roffset = TJ.getRedOffset(pf);
+    int goffset = TJ.getGreenOffset(pf);
+    int boffset = TJ.getBlueOffset(pf);
+    int aoffset = alphaOffset[pf];
+    int ps = TJ.getPixelSize(pf);
+    int index, row, col, retval = 1;
+    int halfway = 16 * sf.getNum() / sf.getDenom();
+    int blockSize = 8 * sf.getNum() / sf.getDenom();
+
+    try {
+
+      if (pf == TJ.PF_CMYK) {
+        for (row = 0; row < h; row++) {
+          for (col = 0; col < w; col++) {
+            if ((flags & TJ.FLAG_BOTTOMUP) != 0)
+              index = (h - row - 1) * w + col;
+            else
+              index = row * w + col;
+            byte c = buf[index * ps];
+            byte m = buf[index * ps + 1];
+            byte y = buf[index * ps + 2];
+            byte k = buf[index * ps + 3];
+            checkVal255(row, col, c, "C");
+            if (((row / blockSize) + (col / blockSize)) % 2 == 0) {
+              checkVal255(row, col, m, "M");
+              checkVal255(row, col, y, "Y");
+              if (row < halfway)
+                checkVal255(row, col, k, "K");
+              else
+                checkVal0(row, col, k, "K");
+            } else {
+              checkVal0(row, col, y, "Y");
+              checkVal255(row, col, k, "K");
+              if (row < halfway)
+                checkVal0(row, col, m, "M");
+              else
+                checkVal255(row, col, m, "M");
+            }
+          }
+        }
+        return 1;
+      }
+
+      for (row = 0; row < halfway; row++) {
+        for (col = 0; col < w; col++) {
+          if ((flags & TJ.FLAG_BOTTOMUP) != 0)
+            index = pitch * (h - row - 1) + col * ps;
+          else
+            index = pitch * row + col * ps;
+          byte r = buf[index + roffset];
+          byte g = buf[index + goffset];
+          byte b = buf[index + boffset];
+          byte a = aoffset >= 0 ? buf[index + aoffset] : (byte)255;
+          if (((row / blockSize) + (col / blockSize)) % 2 == 0) {
+            if (row < halfway) {
+              checkVal255(row, col, r, "R");
+              checkVal255(row, col, g, "G");
+              checkVal255(row, col, b, "B");
+            } else {
+              checkVal0(row, col, r, "R");
+              checkVal0(row, col, g, "G");
+              checkVal0(row, col, b, "B");
+            }
+          } else {
+            if (subsamp == TJ.SAMP_GRAY) {
+              if (row < halfway) {
+                checkVal(row, col, r, "R", 76);
+                checkVal(row, col, g, "G", 76);
+                checkVal(row, col, b, "B", 76);
+              } else {
+                checkVal(row, col, r, "R", 226);
+                checkVal(row, col, g, "G", 226);
+                checkVal(row, col, b, "B", 226);
+              }
+            } else {
+              checkVal255(row, col, r, "R");
+              if (row < halfway) {
+                checkVal0(row, col, g, "G");
+              } else {
+                checkVal255(row, col, g, "G");
+              }
+              checkVal0(row, col, b, "B");
+            }
+          }
+          checkVal255(row, col, a, "A");
+        }
+      }
+    } catch(Exception e) {
+      System.out.println("\n" + e.getMessage());
+      retval = 0;
+    }
+
+    if (retval == 0) {
+      for (row = 0; row < h; row++) {
+        for (col = 0; col < w; col++) {
+          if (pf == TJ.PF_CMYK) {
+            int c = buf[pitch * row + col * ps];
+            int m = buf[pitch * row + col * ps + 1];
+            int y = buf[pitch * row + col * ps + 2];
+            int k = buf[pitch * row + col * ps + 3];
+            if (c < 0) c += 256;
+            if (m < 0) m += 256;
+            if (y < 0) y += 256;
+            if (k < 0) k += 256;
+            System.out.format("%3d/%3d/%3d/%3d ", c, m, y, k);
+          } else {
+            int r = buf[pitch * row + col * ps + roffset];
+            int g = buf[pitch * row + col * ps + goffset];
+            int b = buf[pitch * row + col * ps + boffset];
+            if (r < 0) r += 256;
+            if (g < 0) g += 256;
+            if (b < 0) b += 256;
+            System.out.format("%3d/%3d/%3d ", r, g, b);
+          }
+        }
+        System.out.print("\n");
+      }
+    }
+    return retval;
+  }
+
+  private static int checkIntBuf(int[] buf, int w, int pitch, int h, int pf,
+                                 int subsamp, TJScalingFactor sf, int flags)
+                                 throws Exception {
+    int rshift = TJ.getRedOffset(pf) * 8;
+    int gshift = TJ.getGreenOffset(pf) * 8;
+    int bshift = TJ.getBlueOffset(pf) * 8;
+    int ashift = alphaOffset[pf] * 8;
+    int index, row, col, retval = 1;
+    int halfway = 16 * sf.getNum() / sf.getDenom();
+    int blockSize = 8 * sf.getNum() / sf.getDenom();
+
+    try {
+      for (row = 0; row < halfway; row++) {
+        for (col = 0; col < w; col++) {
+          if ((flags & TJ.FLAG_BOTTOMUP) != 0)
+            index = pitch * (h - row - 1) + col;
+          else
+            index = pitch * row + col;
+          int r = (buf[index] >> rshift) & 0xFF;
+          int g = (buf[index] >> gshift) & 0xFF;
+          int b = (buf[index] >> bshift) & 0xFF;
+          int a = ashift >= 0 ? (buf[index] >> ashift) & 0xFF : 255;
+          if (((row / blockSize) + (col / blockSize)) % 2 == 0) {
+            if (row < halfway) {
+              checkVal255(row, col, r, "R");
+              checkVal255(row, col, g, "G");
+              checkVal255(row, col, b, "B");
+            } else {
+              checkVal0(row, col, r, "R");
+              checkVal0(row, col, g, "G");
+              checkVal0(row, col, b, "B");
+            }
+          } else {
+            if (subsamp == TJ.SAMP_GRAY) {
+              if (row < halfway) {
+                checkVal(row, col, r, "R", 76);
+                checkVal(row, col, g, "G", 76);
+                checkVal(row, col, b, "B", 76);
+              } else {
+                checkVal(row, col, r, "R", 226);
+                checkVal(row, col, g, "G", 226);
+                checkVal(row, col, b, "B", 226);
+              }
+            } else {
+              checkVal255(row, col, r, "R");
+              if (row < halfway) {
+                checkVal0(row, col, g, "G");
+              } else {
+                checkVal255(row, col, g, "G");
+              }
+              checkVal0(row, col, b, "B");
+            }
+          }
+          checkVal255(row, col, a, "A");
+        }
+      }
+    } catch(Exception e) {
+      System.out.println("\n" + e.getMessage());
+      retval = 0;
+    }
+
+    if (retval == 0) {
+      for (row = 0; row < h; row++) {
+        for (col = 0; col < w; col++) {
+          int r = (buf[pitch * row + col] >> rshift) & 0xFF;
+          int g = (buf[pitch * row + col] >> gshift) & 0xFF;
+          int b = (buf[pitch * row + col] >> bshift) & 0xFF;
+          if (r < 0) r += 256;
+          if (g < 0) g += 256;
+          if (b < 0) b += 256;
+          System.out.format("%3d/%3d/%3d ", r, g, b);
+        }
+        System.out.print("\n");
+      }
+    }
+    return retval;
+  }
+
+  private static int checkImg(BufferedImage img, int pf, int subsamp,
+                              TJScalingFactor sf, int flags) throws Exception {
+    WritableRaster wr = img.getRaster();
+    int imgType = img.getType();
+    if (imgType == BufferedImage.TYPE_INT_RGB ||
+        imgType == BufferedImage.TYPE_INT_BGR ||
+        imgType == BufferedImage.TYPE_INT_ARGB ||
+        imgType == BufferedImage.TYPE_INT_ARGB_PRE) {
+      SinglePixelPackedSampleModel sm =
+        (SinglePixelPackedSampleModel)img.getSampleModel();
+      int pitch = sm.getScanlineStride();
+      DataBufferInt db = (DataBufferInt)wr.getDataBuffer();
+      int[] buf = db.getData();
+      return checkIntBuf(buf, img.getWidth(), pitch, img.getHeight(), pf,
+                         subsamp, sf, flags);
+    } else {
+      ComponentSampleModel sm = (ComponentSampleModel)img.getSampleModel();
+      int pitch = sm.getScanlineStride();
+      DataBufferByte db = (DataBufferByte)wr.getDataBuffer();
+      byte[] buf = db.getData();
+      return checkBuf(buf, img.getWidth(), pitch, img.getHeight(), pf, subsamp,
+                      sf, flags);
+    }
+  }
+
+  private static int PAD(int v, int p) {
+    return ((v + (p) - 1) & (~((p) - 1)));
+  }
+
+  private static int checkBufYUV(byte[] buf, int size, int w, int h,
+                                 int subsamp, TJScalingFactor sf)
+                                 throws Exception {
+    int row, col;
+    int hsf = TJ.getMCUWidth(subsamp) / 8, vsf = TJ.getMCUHeight(subsamp) / 8;
+    int pw = PAD(w, hsf), ph = PAD(h, vsf);
+    int cw = pw / hsf, ch = ph / vsf;
+    int ypitch = PAD(pw, pad), uvpitch = PAD(cw, pad);
+    int retval = 1;
+    int correctsize = ypitch * ph +
+                      (subsamp == TJ.SAMP_GRAY ? 0 : uvpitch * ch * 2);
+    int halfway = 16 * sf.getNum() / sf.getDenom();
+    int blockSize = 8 * sf.getNum() / sf.getDenom();
+
+    try {
+      if (size != correctsize)
+        throw new Exception("Incorrect size " + size + ".  Should be " +
+                            correctsize);
+
+      for (row = 0; row < ph; row++) {
+        for (col = 0; col < pw; col++) {
+          byte y = buf[ypitch * row + col];
+          if (((row / blockSize) + (col / blockSize)) % 2 == 0) {
+            if (row < halfway)
+              checkVal255(row, col, y, "Y");
+            else
+              checkVal0(row, col, y, "Y");
+          } else {
+            if (row < halfway)
+              checkVal(row, col, y, "Y", 76);
+            else
+              checkVal(row, col, y, "Y", 226);
+          }
+        }
+      }
+      if (subsamp != TJ.SAMP_GRAY) {
+        halfway = 16 / vsf * sf.getNum() / sf.getDenom();
+        for (row = 0; row < ch; row++) {
+          for (col = 0; col < cw; col++) {
+            byte u = buf[ypitch * ph + (uvpitch * row + col)],
+                 v = buf[ypitch * ph + uvpitch * ch + (uvpitch * row + col)];
+            if (((row * vsf / blockSize) + (col * hsf / blockSize)) % 2 == 0) {
+              checkVal(row, col, u, "U", 128);
+              checkVal(row, col, v, "V", 128);
+            } else {
+              if (row < halfway) {
+                checkVal(row, col, u, "U", 85);
+                checkVal255(row, col, v, "V");
+              } else {
+                checkVal0(row, col, u, "U");
+                checkVal(row, col, v, "V", 149);
+              }
+            }
+          }
+        }
+      }
+    } catch(Exception e) {
+      System.out.println("\n" + e.getMessage());
+      retval = 0;
+    }
+
+    if (retval == 0) {
+      for (row = 0; row < ph; row++) {
+        for (col = 0; col < pw; col++) {
+          int y = buf[ypitch * row + col];
+          if (y < 0) y += 256;
+          System.out.format("%3d ", y);
+        }
+        System.out.print("\n");
+      }
+      System.out.print("\n");
+      for (row = 0; row < ch; row++) {
+        for (col = 0; col < cw; col++) {
+          int u = buf[ypitch * ph + (uvpitch * row + col)];
+          if (u < 0) u += 256;
+          System.out.format("%3d ", u);
+        }
+        System.out.print("\n");
+      }
+      System.out.print("\n");
+      for (row = 0; row < ch; row++) {
+        for (col = 0; col < cw; col++) {
+          int v = buf[ypitch * ph + uvpitch * ch + (uvpitch * row + col)];
+          if (v < 0) v += 256;
+          System.out.format("%3d ", v);
+        }
+        System.out.print("\n");
+      }
+    }
+
+    return retval;
+  }
+
+  private static void writeJPEG(byte[] jpegBuf, int jpegBufSize,
+                                String filename) throws Exception {
+    File file = new File(filename);
+    FileOutputStream fos = new FileOutputStream(file);
+    fos.write(jpegBuf, 0, jpegBufSize);
+    fos.close();
+  }
+
+  private static int compTest(TJCompressor tjc, byte[] dstBuf, int w,
+                              int h, int pf, String baseName, int subsamp,
+                              int jpegQual, int flags) throws Exception {
+    String tempStr;
+    byte[] srcBuf = null;
+    BufferedImage img = null;
+    String pfStr, pfStrLong;
+    String buStr = (flags & TJ.FLAG_BOTTOMUP) != 0 ? "BU" : "TD";
+    String buStrLong = (flags & TJ.FLAG_BOTTOMUP) != 0 ?
+                       "Bottom-Up" : "Top-Down ";
+    int size = 0, ps, imgType = pf;
+
+    if (bi) {
+      pf = biTypePF(imgType);
+      pfStr = biTypeStr(imgType);
+      pfStrLong = pfStr + " (" + pixFormatStr[pf] + ")";
+    } else {
+      pfStr = pixFormatStr[pf];
+      pfStrLong = pfStr;
+    }
+    ps =  TJ.getPixelSize(pf);
+
+    if (bi) {
+      img = new BufferedImage(w, h, imgType);
+      initImg(img, pf, flags);
+      tempStr = baseName + "_enc_" + pfStr + "_" + buStr + "_" +
+                subName[subsamp] + "_Q" + jpegQual + ".png";
+      File file = new File(tempStr);
+      ImageIO.write(img, "png", file);
+      tjc.setSourceImage(img, 0, 0, 0, 0);
+    } else {
+      srcBuf = new byte[w * h * ps + 1];
+      initBuf(srcBuf, w, w * ps, h, pf, flags);
+      tjc.setSourceImage(srcBuf, 0, 0, w, 0, h, pf);
+    }
+    Arrays.fill(dstBuf, (byte)0);
+
+    tjc.setSubsamp(subsamp);
+    tjc.setJPEGQuality(jpegQual);
+    if (doYUV) {
+      System.out.format("%s %s -> YUV %s ... ", pfStrLong, buStrLong,
+                        subNameLong[subsamp]);
+      YUVImage yuvImage = tjc.encodeYUV(pad, flags);
+      if (checkBufYUV(yuvImage.getBuf(), yuvImage.getSize(), w, h, subsamp,
+          new TJScalingFactor(1, 1)) == 1)
+        System.out.print("Passed.\n");
+      else {
+        System.out.print("FAILED!\n");
+        exitStatus = -1;
+      }
+
+      System.out.format("YUV %s %s -> JPEG Q%d ... ", subNameLong[subsamp],
+                        buStrLong, jpegQual);
+      tjc.setSourceImage(yuvImage);
+    } else {
+      System.out.format("%s %s -> %s Q%d ... ", pfStrLong, buStrLong,
+                        subNameLong[subsamp], jpegQual);
+    }
+    tjc.compress(dstBuf, flags);
+    size = tjc.getCompressedSize();
+
+    tempStr = baseName + "_enc_" + pfStr + "_" + buStr + "_" +
+              subName[subsamp] + "_Q" + jpegQual + ".jpg";
+    writeJPEG(dstBuf, size, tempStr);
+    System.out.println("Done.\n  Result in " + tempStr);
+
+    return size;
+  }
+
+  private static void decompTest(TJDecompressor tjd, byte[] jpegBuf,
+                                 int jpegSize, int w, int h, int pf,
+                                 String baseName, int subsamp, int flags,
+                                 TJScalingFactor sf) throws Exception {
+    String pfStr, pfStrLong, tempStr;
+    String buStrLong = (flags & TJ.FLAG_BOTTOMUP) != 0 ?
+                       "Bottom-Up" : "Top-Down ";
+    int scaledWidth = sf.getScaled(w);
+    int scaledHeight = sf.getScaled(h);
+    int temp1, temp2, imgType = pf;
+    BufferedImage img = null;
+    byte[] dstBuf = null;
+
+    if (bi) {
+      pf = biTypePF(imgType);
+      pfStr = biTypeStr(imgType);
+      pfStrLong = pfStr + " (" + pixFormatStr[pf] + ")";
+    } else {
+      pfStr = pixFormatStr[pf];
+      pfStrLong = pfStr;
+    }
+
+    tjd.setSourceImage(jpegBuf, jpegSize);
+    if (tjd.getWidth() != w || tjd.getHeight() != h ||
+        tjd.getSubsamp() != subsamp)
+      throw new Exception("Incorrect JPEG header");
+
+    temp1 = scaledWidth;
+    temp2 = scaledHeight;
+    temp1 = tjd.getScaledWidth(temp1, temp2);
+    temp2 = tjd.getScaledHeight(temp1, temp2);
+    if (temp1 != scaledWidth || temp2 != scaledHeight)
+      throw new Exception("Scaled size mismatch");
+
+    if (doYUV) {
+      System.out.format("JPEG -> YUV %s ", subNameLong[subsamp]);
+      if(!sf.isOne())
+        System.out.format("%d/%d ... ", sf.getNum(), sf.getDenom());
+      else System.out.print("... ");
+      YUVImage yuvImage = tjd.decompressToYUV(scaledWidth, pad, scaledHeight,
+                                              flags);
+      if (checkBufYUV(yuvImage.getBuf(), yuvImage.getSize(), scaledWidth,
+                      scaledHeight, subsamp, sf) == 1)
+        System.out.print("Passed.\n");
+      else {
+        System.out.print("FAILED!\n");  exitStatus = -1;
+      }
+
+      System.out.format("YUV %s -> %s %s ... ", subNameLong[subsamp],
+                        pfStrLong, buStrLong);
+      tjd.setSourceImage(yuvImage);
+    } else {
+      System.out.format("JPEG -> %s %s ", pfStrLong, buStrLong);
+      if(!sf.isOne())
+        System.out.format("%d/%d ... ", sf.getNum(), sf.getDenom());
+      else System.out.print("... ");
+    }
+    if (bi)
+      img = tjd.decompress(scaledWidth, scaledHeight, imgType, flags);
+    else
+      dstBuf = tjd.decompress(scaledWidth, 0, scaledHeight, pf, flags);
+
+    if (bi) {
+      tempStr = baseName + "_dec_" + pfStr + "_" +
+                (((flags & TJ.FLAG_BOTTOMUP) != 0) ? "BU" : "TD") + "_" +
+                subName[subsamp] + "_" +
+                (double)sf.getNum() / (double)sf.getDenom() + "x" + ".png";
+      File file = new File(tempStr);
+      ImageIO.write(img, "png", file);
+    }
+
+    if ((bi && checkImg(img, pf, subsamp, sf, flags) == 1) ||
+        (!bi && checkBuf(dstBuf, scaledWidth,
+                         scaledWidth * TJ.getPixelSize(pf), scaledHeight, pf,
+                         subsamp, sf, flags) == 1))
+      System.out.print("Passed.\n");
+    else {
+      System.out.print("FAILED!\n");
+      exitStatus = -1;
+    }
+  }
+
+  private static void decompTest(TJDecompressor tjd, byte[] jpegBuf,
+                                 int jpegSize, int w, int h, int pf,
+                                 String baseName, int subsamp,
+                                 int flags) throws Exception {
+    int i;
+    TJScalingFactor[] sf = TJ.getScalingFactors();
+    for (i = 0; i < sf.length; i++) {
+      int num = sf[i].getNum();
+      int denom = sf[i].getDenom();
+      if (subsamp == TJ.SAMP_444 || subsamp == TJ.SAMP_GRAY ||
+          (subsamp == TJ.SAMP_411 && num == 1 &&
+           (denom == 2 || denom == 1)) ||
+          (subsamp != TJ.SAMP_411 && num == 1 &&
+           (denom == 4 || denom == 2 || denom == 1)))
+        decompTest(tjd, jpegBuf, jpegSize, w, h, pf, baseName, subsamp,
+                   flags, sf[i]);
+    }
+  }
+
+  private static void doTest(int w, int h, int[] formats, int subsamp,
+                             String baseName) throws Exception {
+    TJCompressor tjc = null;
+    TJDecompressor tjd = null;
+    int size;
+    byte[] dstBuf;
+
+    dstBuf = new byte[TJ.bufSize(w, h, subsamp)];
+
+    try {
+      tjc = new TJCompressor();
+      tjd = new TJDecompressor();
+
+      for (int pf : formats) {
+        if (pf < 0) continue;
+        for (int i = 0; i < 2; i++) {
+          int flags = 0;
+          if (subsamp == TJ.SAMP_422 || subsamp == TJ.SAMP_420 ||
+              subsamp == TJ.SAMP_440 || subsamp == TJ.SAMP_411)
+            flags |= TJ.FLAG_FASTUPSAMPLE;
+          if (i == 1)
+            flags |= TJ.FLAG_BOTTOMUP;
+          size = compTest(tjc, dstBuf, w, h, pf, baseName, subsamp, 100,
+                          flags);
+          decompTest(tjd, dstBuf, size, w, h, pf, baseName, subsamp, flags);
+          if (pf >= TJ.PF_RGBX && pf <= TJ.PF_XRGB && !bi) {
+            System.out.print("\n");
+            decompTest(tjd, dstBuf, size, w, h, pf + (TJ.PF_RGBA - TJ.PF_RGBX),
+                       baseName, subsamp, flags);
+          }
+          System.out.print("\n");
+        }
+      }
+      System.out.print("--------------------\n\n");
+    } catch(Exception e) {
+      if (tjc != null) tjc.close();
+      if (tjd != null) tjd.close();
+      throw e;
+    }
+    if (tjc != null) tjc.close();
+    if (tjd != null) tjd.close();
+  }
+
+  private static void bufSizeTest() throws Exception {
+    int w, h, i, subsamp;
+    byte[] srcBuf, dstBuf = null;
+    YUVImage dstImage = null;
+    TJCompressor tjc = null;
+    Random r = new Random();
+
+    try {
+      tjc = new TJCompressor();
+      System.out.println("Buffer size regression test");
+      for (subsamp = 0; subsamp < TJ.NUMSAMP; subsamp++) {
+        for (w = 1; w < 48; w++) {
+          int maxh = (w == 1) ? 2048 : 48;
+          for (h = 1; h < maxh; h++) {
+            if (h % 100 == 0)
+              System.out.format("%04d x %04d\b\b\b\b\b\b\b\b\b\b\b", w, h);
+            srcBuf = new byte[w * h * 4];
+            if (doYUV)
+              dstImage = new YUVImage(w, pad, h, subsamp);
+            else
+              dstBuf = new byte[TJ.bufSize(w, h, subsamp)];
+            for (i = 0; i < w * h * 4; i++) {
+              srcBuf[i] = (byte)(r.nextInt(2) * 255);
+            }
+            tjc.setSourceImage(srcBuf, 0, 0, w, 0, h, TJ.PF_BGRX);
+            tjc.setSubsamp(subsamp);
+            tjc.setJPEGQuality(100);
+            if (doYUV)
+              tjc.encodeYUV(dstImage, 0);
+            else
+              tjc.compress(dstBuf, 0);
+
+            srcBuf = new byte[h * w * 4];
+            if (doYUV)
+              dstImage = new YUVImage(h, pad, w, subsamp);
+            else
+              dstBuf = new byte[TJ.bufSize(h, w, subsamp)];
+            for (i = 0; i < h * w * 4; i++) {
+              srcBuf[i] = (byte)(r.nextInt(2) * 255);
+            }
+            tjc.setSourceImage(srcBuf, 0, 0, h, 0, w, TJ.PF_BGRX);
+            if (doYUV)
+              tjc.encodeYUV(dstImage, 0);
+            else
+              tjc.compress(dstBuf, 0);
+          }
+          dstImage = null;
+          dstBuf = null;
+          System.gc();
+        }
+      }
+      System.out.println("Done.      ");
+    } catch(Exception e) {
+      if (tjc != null) tjc.close();
+      throw e;
+    }
+    if (tjc != null) tjc.close();
+  }
+
+  public static void main(String[] argv) {
+    try {
+      String testName = "javatest";
+      for (int i = 0; i < argv.length; i++) {
+        if (argv[i].equalsIgnoreCase("-yuv"))
+          doYUV = true;
+        if (argv[i].equalsIgnoreCase("-noyuvpad"))
+          pad = 1;
+        if (argv[i].substring(0, 1).equalsIgnoreCase("-h") ||
+            argv[i].equalsIgnoreCase("-?"))
+          usage();
+        if (argv[i].equalsIgnoreCase("-bi")) {
+          bi = true;
+          testName = "javabitest";
+        }
+      }
+      if (doYUV)
+        _4byteFormats[4] = -1;
+      doTest(35, 39, bi ? _3byteFormatsBI : _3byteFormats, TJ.SAMP_444,
+             testName);
+      doTest(39, 41, bi ? _4byteFormatsBI : _4byteFormats, TJ.SAMP_444,
+             testName);
+      doTest(41, 35, bi ? _3byteFormatsBI : _3byteFormats, TJ.SAMP_422,
+             testName);
+      doTest(35, 39, bi ? _4byteFormatsBI : _4byteFormats, TJ.SAMP_422,
+             testName);
+      doTest(39, 41, bi ? _3byteFormatsBI : _3byteFormats, TJ.SAMP_420,
+             testName);
+      doTest(41, 35, bi ? _4byteFormatsBI : _4byteFormats, TJ.SAMP_420,
+             testName);
+      doTest(35, 39, bi ? _3byteFormatsBI : _3byteFormats, TJ.SAMP_440,
+             testName);
+      doTest(39, 41, bi ? _4byteFormatsBI : _4byteFormats, TJ.SAMP_440,
+             testName);
+      doTest(41, 35, bi ? _3byteFormatsBI : _3byteFormats, TJ.SAMP_411,
+             testName);
+      doTest(35, 39, bi ? _4byteFormatsBI : _4byteFormats, TJ.SAMP_411,
+             testName);
+      doTest(39, 41, bi ? onlyGrayBI : onlyGray, TJ.SAMP_GRAY, testName);
+      doTest(41, 35, bi ? _3byteFormatsBI : _3byteFormats, TJ.SAMP_GRAY,
+             testName);
+      _4byteFormats[4] = -1;
+      doTest(35, 39, bi ? _4byteFormatsBI : _4byteFormats, TJ.SAMP_GRAY,
+             testName);
+      if (!bi)
+        bufSizeTest();
+      if (doYUV && !bi) {
+        System.out.print("\n--------------------\n\n");
+        doTest(48, 48, onlyRGB, TJ.SAMP_444, "javatest_yuv0");
+        doTest(48, 48, onlyRGB, TJ.SAMP_422, "javatest_yuv0");
+        doTest(48, 48, onlyRGB, TJ.SAMP_420, "javatest_yuv0");
+        doTest(48, 48, onlyRGB, TJ.SAMP_440, "javatest_yuv0");
+        doTest(48, 48, onlyRGB, TJ.SAMP_411, "javatest_yuv0");
+        doTest(48, 48, onlyRGB, TJ.SAMP_GRAY, "javatest_yuv0");
+        doTest(48, 48, onlyGray, TJ.SAMP_GRAY, "javatest_yuv0");
+      }
+    } catch(Exception e) {
+      e.printStackTrace();
+      exitStatus = -1;
+    }
+    System.exit(exitStatus);
+  }
+}