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

java/org/libjpegturbo/turbojpeg/TJDecompressor.java

+/*
+ * Copyright (C)2011-2015 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;
+
+import java.awt.image.*;
+import java.nio.*;
+import java.io.*;
+
+/**
+ * TurboJPEG decompressor
+ */
+public class TJDecompressor implements Closeable {
+
+  private static final String NO_ASSOC_ERROR =
+    "No JPEG image is associated with this instance";
+
+  /**
+   * Create a TurboJPEG decompresssor instance.
+   */
+  public TJDecompressor() throws TJException {
+    init();
+  }
+
+  /**
+   * Create a TurboJPEG decompressor instance and associate the JPEG source
+   * 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 TJDecompressor(byte[] jpegImage) throws TJException {
+    init();
+    setSourceImage(jpegImage, jpegImage.length);
+  }
+
+  /**
+   * Create a TurboJPEG decompressor instance and associate the JPEG source
+   * 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 TJDecompressor(byte[] jpegImage, int imageSize) throws TJException {
+    init();
+    setSourceImage(jpegImage, imageSize);
+  }
+
+  /**
+   * Create a TurboJPEG decompressor instance and associate the YUV planar
+   * source image stored in <code>yuvImage</code> with the newly created
+   * instance.
+   *
+   * @param yuvImage {@link YUVImage} instance containing a YUV planar
+   * image to be decoded.  This image is not modified.
+   */
+  public TJDecompressor(YUVImage yuvImage) throws TJException {
+    init();
+    setSourceImage(yuvImage);
+  }
+
+  /**
+   * Associate the JPEG image of length <code>imageSize</code> bytes stored in
+   * <code>jpegImage</code> with this decompressor instance.  This image will
+   * be used as the source image for subsequent decompress operations.
+   *
+   * @param jpegImage JPEG image buffer.  This buffer is not modified.
+   *
+   * @param imageSize size of the JPEG image (in bytes)
+   */
+  public void setSourceImage(byte[] jpegImage, int imageSize)
+                             throws TJException {
+    if (jpegImage == null || imageSize < 1)
+      throw new IllegalArgumentException("Invalid argument in setSourceImage()");
+    jpegBuf = jpegImage;
+    jpegBufSize = imageSize;
+    decompressHeader(jpegBuf, jpegBufSize);
+    yuvImage = null;
+  }
+
+  /**
+   * @deprecated Use {@link #setSourceImage(byte[], int)} instead.
+   */
+  @Deprecated
+  public void setJPEGImage(byte[] jpegImage, int imageSize)
+                           throws TJException {
+    setSourceImage(jpegImage, imageSize);
+  }
+
+  /**
+   * Associate the specified YUV planar source image with this decompressor
+   * instance.  Subsequent decompress operations will decode this image into an
+   * RGB or grayscale destination image.
+   *
+   * @param srcImage {@link YUVImage} instance containing a YUV planar image to
+   * be decoded.  This image is not modified.
+   */
+  public void setSourceImage(YUVImage srcImage) {
+    if (srcImage == null)
+      throw new IllegalArgumentException("Invalid argument in setSourceImage()");
+    yuvImage = srcImage;
+    jpegBuf = null;
+    jpegBufSize = 0;
+  }
+
+
+  /**
+   * Returns the width of the source image (JPEG or YUV) associated with this
+   * decompressor instance.
+   *
+   * @return the width of the source image (JPEG or YUV) associated with this
+   * decompressor instance.
+   */
+  public int getWidth() {
+    if (yuvImage != null)
+      return yuvImage.getWidth();
+    if (jpegWidth < 1)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    return jpegWidth;
+  }
+
+  /**
+   * Returns the height of the source image (JPEG or YUV) associated with this
+   * decompressor instance.
+   *
+   * @return the height of the source image (JPEG or YUV) associated with this
+   * decompressor instance.
+   */
+  public int getHeight() {
+    if (yuvImage != null)
+      return yuvImage.getHeight();
+    if (jpegHeight < 1)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    return jpegHeight;
+  }
+
+  /**
+   * Returns the level of chrominance subsampling used in the source image
+   * (JPEG or YUV) associated with this decompressor instance.  See
+   * {@link TJ#SAMP_444 TJ.SAMP_*}.
+   *
+   * @return the level of chrominance subsampling used in the source image
+   * (JPEG or YUV) associated with this decompressor instance.
+   */
+  public int getSubsamp() {
+    if (yuvImage != null)
+      return yuvImage.getSubsamp();
+    if (jpegSubsamp < 0)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (jpegSubsamp >= TJ.NUMSAMP)
+      throw new IllegalStateException("JPEG header information is invalid");
+    return jpegSubsamp;
+  }
+
+  /**
+   * Returns the colorspace used in the source image (JPEG or YUV) associated
+   * with this decompressor instance.  See {@link TJ#CS_RGB TJ.CS_*}.  If the
+   * source image is YUV, then this always returns {@link TJ#CS_YCbCr}.
+   *
+   * @return the colorspace used in the source image (JPEG or YUV) associated
+   * with this decompressor instance.
+   */
+  public int getColorspace() {
+    if (yuvImage != null)
+      return TJ.CS_YCbCr;
+    if (jpegColorspace < 0)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (jpegColorspace >= TJ.NUMCS)
+      throw new IllegalStateException("JPEG header information is invalid");
+    return jpegColorspace;
+  }
+
+  /**
+   * Returns the JPEG image buffer associated with this decompressor instance.
+   *
+   * @return the JPEG image buffer associated with this decompressor instance.
+   */
+  public byte[] getJPEGBuf() {
+    if (jpegBuf == null)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    return jpegBuf;
+  }
+
+  /**
+   * Returns the size of the JPEG image (in bytes) associated with this
+   * decompressor instance.
+   *
+   * @return the size of the JPEG image (in bytes) associated with this
+   * decompressor instance.
+   */
+  public int getJPEGSize() {
+    if (jpegBufSize < 1)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    return jpegBufSize;
+  }
+
+  /**
+   * Returns the width of the largest scaled-down image that the TurboJPEG
+   * decompressor can generate without exceeding the desired image width and
+   * height.
+   *
+   * @param desiredWidth desired width (in pixels) of the decompressed image.
+   * Setting this to 0 is the same as setting it to the width of the JPEG image
+   * (in other words, the width will not be considered when determining the
+   * scaled image size.)
+   *
+   * @param desiredHeight desired height (in pixels) of the decompressed image.
+   * Setting this to 0 is the same as setting it to the height of the JPEG
+   * image (in other words, the height will not be considered when determining
+   * the scaled image size.)
+   *
+   * @return the width of the largest scaled-down image that the TurboJPEG
+   * decompressor can generate without exceeding the desired image width and
+   * height.
+   */
+  public int getScaledWidth(int desiredWidth, int desiredHeight) {
+    if (jpegWidth < 1 || jpegHeight < 1)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (desiredWidth < 0 || desiredHeight < 0)
+      throw new IllegalArgumentException("Invalid argument in getScaledWidth()");
+    TJScalingFactor[] sf = TJ.getScalingFactors();
+    if (desiredWidth == 0)
+      desiredWidth = jpegWidth;
+    if (desiredHeight == 0)
+      desiredHeight = jpegHeight;
+    int scaledWidth = jpegWidth, scaledHeight = jpegHeight;
+    for (int i = 0; i < sf.length; i++) {
+      scaledWidth = sf[i].getScaled(jpegWidth);
+      scaledHeight = sf[i].getScaled(jpegHeight);
+      if (scaledWidth <= desiredWidth && scaledHeight <= desiredHeight)
+        break;
+    }
+    if (scaledWidth > desiredWidth || scaledHeight > desiredHeight)
+      throw new IllegalArgumentException("Could not scale down to desired image dimensions");
+    return scaledWidth;
+  }
+
+  /**
+   * Returns the height of the largest scaled-down image that the TurboJPEG
+   * decompressor can generate without exceeding the desired image width and
+   * height.
+   *
+   * @param desiredWidth desired width (in pixels) of the decompressed image.
+   * Setting this to 0 is the same as setting it to the width of the JPEG image
+   * (in other words, the width will not be considered when determining the
+   * scaled image size.)
+   *
+   * @param desiredHeight desired height (in pixels) of the decompressed image.
+   * Setting this to 0 is the same as setting it to the height of the JPEG
+   * image (in other words, the height will not be considered when determining
+   * the scaled image size.)
+   *
+   * @return the height of the largest scaled-down image that the TurboJPEG
+   * decompressor can generate without exceeding the desired image width and
+   * height.
+   */
+  public int getScaledHeight(int desiredWidth, int desiredHeight) {
+    if (jpegWidth < 1 || jpegHeight < 1)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (desiredWidth < 0 || desiredHeight < 0)
+      throw new IllegalArgumentException("Invalid argument in getScaledHeight()");
+    TJScalingFactor[] sf = TJ.getScalingFactors();
+    if (desiredWidth == 0)
+      desiredWidth = jpegWidth;
+    if (desiredHeight == 0)
+      desiredHeight = jpegHeight;
+    int scaledWidth = jpegWidth, scaledHeight = jpegHeight;
+    for (int i = 0; i < sf.length; i++) {
+      scaledWidth = sf[i].getScaled(jpegWidth);
+      scaledHeight = sf[i].getScaled(jpegHeight);
+      if (scaledWidth <= desiredWidth && scaledHeight <= desiredHeight)
+        break;
+    }
+    if (scaledWidth > desiredWidth || scaledHeight > desiredHeight)
+      throw new IllegalArgumentException("Could not scale down to desired image dimensions");
+    return scaledHeight;
+  }
+
+  /**
+   * Decompress the JPEG source image or decode the YUV source image associated
+   * with this decompressor instance and output a grayscale, RGB, or CMYK image
+   * to the given destination buffer.
+   *
+   * @param dstBuf buffer that will receive the decompressed/decoded image.
+   * If the source image is a JPEG image, then this buffer should normally be
+   * <code>pitch * scaledHeight</code> bytes in size, where
+   * <code>scaledHeight</code> can be determined by calling <code>
+   * scalingFactor.{@link TJScalingFactor#getScaled getScaled}(jpegHeight)
+   * </code> with one of the scaling factors returned from {@link
+   * TJ#getScalingFactors} or by calling {@link #getScaledHeight}.  If the
+   * source image is a YUV image, then this buffer should normally be
+   * <code>pitch * height</code> bytes in size, where <code>height</code> is
+   * the height of the YUV image.  However, the buffer may also be larger than
+   * the dimensions of the source image, in which case the <code>x</code>,
+   * <code>y</code>, and <code>pitch</code> parameters can be used to specify
+   * the region into which the source image should be decompressed/decoded.
+   *
+   * @param x x offset (in pixels) of the region in the destination image into
+   * which the source image should be decompressed/decoded
+   *
+   * @param y y offset (in pixels) of the region in the destination image into
+   * which the source image should be decompressed/decoded
+   *
+   * @param desiredWidth If the source image is a JPEG image, then this
+   * specifies the desired width (in pixels) of the decompressed image (or
+   * image region.)  If the desired destination image dimensions are different
+   * than the source image dimensions, then TurboJPEG will use scaling in the
+   * JPEG decompressor to generate the largest possible image that will fit
+   * within the desired dimensions.  Setting this to 0 is the same as setting
+   * it to the width of the JPEG image (in other words, the width will not be
+   * considered when determining the scaled image size.)  This parameter is
+   * ignored if the source image is a YUV image.
+   *
+   * @param pitch bytes per line of the destination image.  Normally, this
+   * should be set to <code>scaledWidth * TJ.pixelSize(pixelFormat)</code> if
+   * the destination image is unpadded, but you can use this to, for instance,
+   * pad each line of the destination image to a 4-byte boundary or to
+   * decompress/decode the source image into a region of a larger image.  NOTE:
+   * if the source image is a JPEG image, then <code>scaledWidth</code> can be
+   * determined by calling <code>
+   * scalingFactor.{@link TJScalingFactor#getScaled getScaled}(jpegWidth)
+   * </code> or by calling {@link #getScaledWidth}.  If the source image is a
+   * YUV image, then <code>scaledWidth</code> is the width of the YUV image.
+   * Setting this parameter to 0 is the equivalent of setting it to
+   * <code>scaledWidth * TJ.pixelSize(pixelFormat)</code>.
+   *
+   * @param desiredHeight If the source image is a JPEG image, then this
+   * specifies the desired height (in pixels) of the decompressed image (or
+   * image region.)  If the desired destination image dimensions are different
+   * than the source image dimensions, then TurboJPEG will use scaling in the
+   * JPEG decompressor to generate the largest possible image that will fit
+   * within the desired dimensions.  Setting this to 0 is the same as setting
+   * it to the height of the JPEG image (in other words, the height will not be
+   * considered when determining the scaled image size.)  This parameter is
+   * ignored if the source image is a YUV image.
+   *
+   * @param pixelFormat pixel format of the decompressed/decoded image (one of
+   * {@link TJ#PF_RGB TJ.PF_*})
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   */
+  public void decompress(byte[] dstBuf, int x, int y, int desiredWidth,
+                         int pitch, int desiredHeight, int pixelFormat,
+                         int flags) throws TJException {
+    if (jpegBuf == null && yuvImage == null)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (dstBuf == null || x < 0 || y < 0 || pitch < 0 ||
+        (yuvImage != null && (desiredWidth < 0 || desiredHeight < 0)) ||
+        pixelFormat < 0 || pixelFormat >= TJ.NUMPF || flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompress()");
+    if (yuvImage != null)
+      decodeYUV(yuvImage.getPlanes(), yuvImage.getOffsets(),
+                yuvImage.getStrides(), yuvImage.getSubsamp(), dstBuf, x, y,
+                yuvImage.getWidth(), pitch, yuvImage.getHeight(), pixelFormat,
+                flags);
+    else {
+      if (x > 0 || y > 0)
+        decompress(jpegBuf, jpegBufSize, dstBuf, x, y, desiredWidth, pitch,
+                   desiredHeight, pixelFormat, flags);
+      else
+        decompress(jpegBuf, jpegBufSize, dstBuf, desiredWidth, pitch,
+                   desiredHeight, pixelFormat, flags);
+    }
+  }
+
+  /**
+   * @deprecated Use
+   * {@link #decompress(byte[], int, int, int, int, int, int, int)} instead.
+   */
+  @Deprecated
+  public void decompress(byte[] dstBuf, int desiredWidth, int pitch,
+                         int desiredHeight, int pixelFormat, int flags)
+                         throws TJException {
+    decompress(dstBuf, 0, 0, desiredWidth, pitch, desiredHeight, pixelFormat,
+               flags);
+  }
+
+  /**
+   * Decompress the JPEG source image associated with this decompressor
+   * instance and return a buffer containing the decompressed image.
+   *
+   * @param desiredWidth see
+   * {@link #decompress(byte[], int, int, int, int, int, int, int)}
+   * for description
+   *
+   * @param pitch see
+   * {@link #decompress(byte[], int, int, int, int, int, int, int)}
+   * for description
+   *
+   * @param desiredHeight see
+   * {@link #decompress(byte[], int, int, int, int, int, int, int)}
+   * for description
+   *
+   * @param pixelFormat pixel format of the decompressed image (one of
+   * {@link TJ#PF_RGB TJ.PF_*})
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   *
+   * @return a buffer containing the decompressed image.
+   */
+  public byte[] decompress(int desiredWidth, int pitch, int desiredHeight,
+                           int pixelFormat, int flags) throws TJException {
+    if (pitch < 0 ||
+        (yuvImage == null && (desiredWidth < 0 || desiredHeight < 0)) ||
+        pixelFormat < 0 || pixelFormat >= TJ.NUMPF || flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompress()");
+    int pixelSize = TJ.getPixelSize(pixelFormat);
+    int scaledWidth = getScaledWidth(desiredWidth, desiredHeight);
+    int scaledHeight = getScaledHeight(desiredWidth, desiredHeight);
+    if (pitch == 0)
+      pitch = scaledWidth * pixelSize;
+    byte[] buf = new byte[pitch * scaledHeight];
+    decompress(buf, desiredWidth, pitch, desiredHeight, pixelFormat, flags);
+    return buf;
+  }
+
+  /**
+   * Decompress the JPEG source image associated with this decompressor
+   * instance into a YUV planar image and store it in the given
+   * <code>YUVImage</code> instance.  This method performs JPEG decompression
+   * but leaves out the color conversion step, so a planar YUV image is
+   * generated instead of an RGB or grayscale image.  This method cannot be
+   * used to decompress JPEG source images with the CMYK or YCCK colorspace.
+   *
+   * @param dstImage {@link YUVImage} instance that will receive the YUV planar
+   * image.  The level of subsampling specified in this <code>YUVImage</code>
+   * instance must match that of the JPEG image, and the width and height
+   * specified in the <code>YUVImage</code> instance must match one of the
+   * scaled image sizes that TurboJPEG is capable of generating from the JPEG
+   * source image.
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   */
+  public void decompressToYUV(YUVImage dstImage, int flags)
+                              throws TJException {
+    if (jpegBuf == null)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (dstImage == null || flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompressToYUV()");
+    int scaledWidth = getScaledWidth(dstImage.getWidth(),
+                                     dstImage.getHeight());
+    int scaledHeight = getScaledHeight(dstImage.getWidth(),
+                                       dstImage.getHeight());
+    if (scaledWidth != dstImage.getWidth() ||
+        scaledHeight != dstImage.getHeight())
+      throw new IllegalArgumentException("YUVImage dimensions do not match one of the scaled image sizes that TurboJPEG is capable of generating.");
+    if (jpegSubsamp != dstImage.getSubsamp())
+      throw new IllegalArgumentException("YUVImage subsampling level does not match that of the JPEG image");
+
+    decompressToYUV(jpegBuf, jpegBufSize, dstImage.getPlanes(),
+                    dstImage.getOffsets(), dstImage.getWidth(),
+                    dstImage.getStrides(), dstImage.getHeight(), flags);
+  }
+
+  /**
+   * @deprecated Use {@link #decompressToYUV(YUVImage, int)} instead.
+   */
+  @Deprecated
+  public void decompressToYUV(byte[] dstBuf, int flags) throws TJException {
+    YUVImage dstImage = new YUVImage(dstBuf, jpegWidth, 4, jpegHeight,
+                                     jpegSubsamp);
+    decompressToYUV(dstImage, flags);
+  }
+
+  /**
+   * Decompress the JPEG source image associated with this decompressor
+   * instance into a set of Y, U (Cb), and V (Cr) image planes and return a
+   * <code>YUVImage</code> instance containing the decompressed image planes.
+   * This method performs JPEG decompression but leaves out the color
+   * conversion step, so a planar YUV image is generated instead of an RGB or
+   * grayscale image.  This method cannot be used to decompress JPEG source
+   * images with the CMYK or YCCK colorspace.
+   *
+   * @param desiredWidth desired width (in pixels) of the YUV image.  If the
+   * desired image dimensions are different than the dimensions of the JPEG
+   * image being decompressed, then TurboJPEG will use scaling in the JPEG
+   * decompressor to generate the largest possible image that will fit within
+   * the desired dimensions.  Setting this to 0 is the same as setting it to
+   * the width of the JPEG image (in other words, the width will not be
+   * considered when determining the scaled image size.)
+   *
+   * @param strides an array of integers, each specifying the number of bytes
+   * per line in the corresponding plane of the output image.  Setting the
+   * stride for any plane to 0 is the same as setting it to the scaled
+   * component width of the plane.  If <tt>strides</tt> is NULL, then the
+   * strides for all planes will be set to their respective scaled component
+   * widths.  You can adjust the strides in order to add an arbitrary amount of
+   * line padding to each plane.
+   *
+   * @param desiredHeight desired height (in pixels) of the YUV image.  If the
+   * desired image dimensions are different than the dimensions of the JPEG
+   * image being decompressed, then TurboJPEG will use scaling in the JPEG
+   * decompressor to generate the largest possible image that will fit within
+   * the desired dimensions.  Setting this to 0 is the same as setting it to
+   * the height of the JPEG image (in other words, the height will not be
+   * considered when determining the scaled image size.)
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   *
+   * @return a YUV planar image.
+   */
+  public YUVImage decompressToYUV(int desiredWidth, int[] strides,
+                                  int desiredHeight,
+                                  int flags) throws TJException {
+    if (flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompressToYUV()");
+    if (jpegWidth < 1 || jpegHeight < 1 || jpegSubsamp < 0)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (jpegSubsamp >= TJ.NUMSAMP)
+      throw new IllegalStateException("JPEG header information is invalid");
+    if (yuvImage != null)
+      throw new IllegalStateException("Source image is the wrong type");
+
+    int scaledWidth = getScaledWidth(desiredWidth, desiredHeight);
+    int scaledHeight = getScaledHeight(desiredWidth, desiredHeight);
+    YUVImage yuvImage = new YUVImage(scaledWidth, null, scaledHeight,
+                                     jpegSubsamp);
+    decompressToYUV(yuvImage, flags);
+    return yuvImage;
+  }
+
+  /**
+   * Decompress the JPEG source image associated with this decompressor
+   * instance into a unified YUV planar image buffer and return a
+   * <code>YUVImage</code> instance containing the decompressed image.  This
+   * method performs JPEG decompression but leaves out the color conversion
+   * step, so a planar YUV image is generated instead of an RGB or grayscale
+   * image.  This method cannot be used to decompress JPEG source images with
+   * the CMYK or YCCK colorspace.
+   *
+   * @param desiredWidth desired width (in pixels) of the YUV image.  If the
+   * desired image dimensions are different than the dimensions of the JPEG
+   * image being decompressed, then TurboJPEG will use scaling in the JPEG
+   * decompressor to generate the largest possible image that will fit within
+   * the desired dimensions.  Setting this to 0 is the same as setting it to
+   * the width of the JPEG image (in other words, the width will not be
+   * considered when determining the scaled image size.)
+   *
+   * @param pad the width of each line in each plane of the YUV image will be
+   * padded to the nearest multiple of this number of bytes (must be a power of
+   * 2.)
+   *
+   * @param desiredHeight desired height (in pixels) of the YUV image.  If the
+   * desired image dimensions are different than the dimensions of the JPEG
+   * image being decompressed, then TurboJPEG will use scaling in the JPEG
+   * decompressor to generate the largest possible image that will fit within
+   * the desired dimensions.  Setting this to 0 is the same as setting it to
+   * the height of the JPEG image (in other words, the height will not be
+   * considered when determining the scaled image size.)
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   *
+   * @return a YUV planar image.
+   */
+  public YUVImage decompressToYUV(int desiredWidth, int pad, int desiredHeight,
+                                  int flags) throws TJException {
+    if (flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompressToYUV()");
+    if (jpegWidth < 1 || jpegHeight < 1 || jpegSubsamp < 0)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (jpegSubsamp >= TJ.NUMSAMP)
+      throw new IllegalStateException("JPEG header information is invalid");
+    if (yuvImage != null)
+      throw new IllegalStateException("Source image is the wrong type");
+
+    int scaledWidth = getScaledWidth(desiredWidth, desiredHeight);
+    int scaledHeight = getScaledHeight(desiredWidth, desiredHeight);
+    YUVImage yuvImage = new YUVImage(scaledWidth, pad, scaledHeight,
+                                     jpegSubsamp);
+    decompressToYUV(yuvImage, flags);
+    return yuvImage;
+  }
+
+  /**
+   * @deprecated Use {@link #decompressToYUV(int, int, int, int)} instead.
+   */
+  @Deprecated
+  public byte[] decompressToYUV(int flags) throws TJException {
+    YUVImage dstImage = new YUVImage(jpegWidth, 4, jpegHeight, jpegSubsamp);
+    decompressToYUV(dstImage, flags);
+    return dstImage.getBuf();
+  }
+
+  /**
+   * Decompress the JPEG source image or decode the YUV source image associated
+   * with this decompressor instance and output a grayscale, RGB, or CMYK image
+   * to the given destination buffer.
+   *
+   * @param dstBuf buffer that will receive the decompressed/decoded image.
+   * If the source image is a JPEG image, then this buffer should normally be
+   * <code>stride * scaledHeight</code> pixels in size, where
+   * <code>scaledHeight</code> can be determined by calling <code>
+   * scalingFactor.{@link TJScalingFactor#getScaled getScaled}(jpegHeight)
+   * </code> with one of the scaling factors returned from {@link
+   * TJ#getScalingFactors} or by calling {@link #getScaledHeight}.  If the
+   * source image is a YUV image, then this buffer should normally be
+   * <code>stride * height</code> pixels in size, where <code>height</code> is
+   * the height of the YUV image.  However, the buffer may also be larger than
+   * the dimensions of the JPEG image, in which case the <code>x</code>,
+   * <code>y</code>, and <code>stride</code> parameters can be used to specify
+   * the region into which the source image should be decompressed.
+   *
+   * @param x x offset (in pixels) of the region in the destination image into
+   * which the source image should be decompressed/decoded
+   *
+   * @param y y offset (in pixels) of the region in the destination image into
+   * which the source image should be decompressed/decoded
+   *
+   * @param desiredWidth If the source image is a JPEG image, then this
+   * specifies the desired width (in pixels) of the decompressed image (or
+   * image region.)  If the desired destination image dimensions are different
+   * than the source image dimensions, then TurboJPEG will use scaling in the
+   * JPEG decompressor to generate the largest possible image that will fit
+   * within the desired dimensions.  Setting this to 0 is the same as setting
+   * it to the width of the JPEG image (in other words, the width will not be
+   * considered when determining the scaled image size.)  This parameter is
+   * ignored if the source image is a YUV image.
+   *
+   * @param stride pixels per line of the destination image.  Normally, this
+   * should be set to <code>scaledWidth</code>, but you can use this to, for
+   * instance, decompress the JPEG image into a region of a larger image.
+   * NOTE: if the source image is a JPEG image, then <code>scaledWidth</code>
+   * can be determined by calling <code>
+   * scalingFactor.{@link TJScalingFactor#getScaled getScaled}(jpegWidth)
+   * </code> or by calling {@link #getScaledWidth}.  If the source image is a
+   * YUV image, then <code>scaledWidth</code> is the width of the YUV image.
+   * Setting this parameter to 0 is the equivalent of setting it to
+   * <code>scaledWidth</code>.
+   *
+   * @param desiredHeight If the source image is a JPEG image, then this
+   * specifies the desired height (in pixels) of the decompressed image (or
+   * image region.)  If the desired destination image dimensions are different
+   * than the source image dimensions, then TurboJPEG will use scaling in the
+   * JPEG decompressor to generate the largest possible image that will fit
+   * within the desired dimensions.  Setting this to 0 is the same as setting
+   * it to the height of the JPEG image (in other words, the height will not be
+   * considered when determining the scaled image size.)  This parameter is
+   * ignored if the source image is a YUV image.
+   *
+   * @param pixelFormat pixel format of the decompressed image (one of
+   * {@link TJ#PF_RGB TJ.PF_*})
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   */
+  public void decompress(int[] dstBuf, int x, int y, int desiredWidth,
+                         int stride, int desiredHeight, int pixelFormat,
+                         int flags) throws TJException {
+    if (jpegBuf == null && yuvImage == null)
+      throw new IllegalStateException(NO_ASSOC_ERROR);
+    if (dstBuf == null || x < 0 || y < 0 || stride < 0 ||
+        (yuvImage != null && (desiredWidth < 0 || desiredHeight < 0)) ||
+        pixelFormat < 0 || pixelFormat >= TJ.NUMPF || flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompress()");
+    if (yuvImage != null)
+      decodeYUV(yuvImage.getPlanes(), yuvImage.getOffsets(),
+                yuvImage.getStrides(), yuvImage.getSubsamp(), dstBuf, x, y,
+                yuvImage.getWidth(), stride, yuvImage.getHeight(), pixelFormat,
+                flags);
+    else
+      decompress(jpegBuf, jpegBufSize, dstBuf, x, y, desiredWidth, stride,
+                 desiredHeight, pixelFormat, flags);
+  }
+
+  /**
+   * Decompress the JPEG source image or decode the YUV source image associated
+   * with this decompressor instance and output a decompressed/decoded image to
+   * the given <code>BufferedImage</code> instance.
+   *
+   * @param dstImage a <code>BufferedImage</code> instance that will receive
+   * the decompressed/decoded image.  If the source image is a JPEG image, then
+   * the width and height of the <code>BufferedImage</code> instance must match
+   * one of the scaled image sizes that TurboJPEG is capable of generating from
+   * the JPEG image.  If the source image is a YUV image, then the width and
+   * height of the <code>BufferedImage</code> instance must match the width and
+   * height of the YUV image.
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   */
+  public void decompress(BufferedImage dstImage, int flags)
+                         throws TJException {
+    if (dstImage == null || flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompress()");
+    int desiredWidth = dstImage.getWidth();
+    int desiredHeight = dstImage.getHeight();
+    int scaledWidth, scaledHeight;
+
+    if (yuvImage != null) {
+      if (desiredWidth != yuvImage.getWidth() ||
+          desiredHeight != yuvImage.getHeight())
+        throw new IllegalArgumentException("BufferedImage dimensions do not match the dimensions of the source image.");
+      scaledWidth = yuvImage.getWidth();
+      scaledHeight = yuvImage.getHeight();
+    } else {
+      scaledWidth = getScaledWidth(desiredWidth, desiredHeight);
+      scaledHeight = getScaledHeight(desiredWidth, desiredHeight);
+      if (scaledWidth != desiredWidth || scaledHeight != desiredHeight)
+        throw new IllegalArgumentException("BufferedImage dimensions do not match one of the scaled image sizes that TurboJPEG is capable of generating.");
+    }
+    int pixelFormat;  boolean intPixels = false;
+    if (byteOrder == null)
+      byteOrder = ByteOrder.nativeOrder();
+    switch(dstImage.getType()) {
+      case BufferedImage.TYPE_3BYTE_BGR:
+        pixelFormat = TJ.PF_BGR;  break;
+      case BufferedImage.TYPE_4BYTE_ABGR:
+      case BufferedImage.TYPE_4BYTE_ABGR_PRE:
+        pixelFormat = TJ.PF_XBGR;  break;
+      case BufferedImage.TYPE_BYTE_GRAY:
+        pixelFormat = TJ.PF_GRAY;  break;
+      case BufferedImage.TYPE_INT_BGR:
+        if (byteOrder == ByteOrder.BIG_ENDIAN)
+          pixelFormat = TJ.PF_XBGR;
+        else
+          pixelFormat = TJ.PF_RGBX;
+        intPixels = true;  break;
+      case BufferedImage.TYPE_INT_RGB:
+        if (byteOrder == ByteOrder.BIG_ENDIAN)
+          pixelFormat = TJ.PF_XRGB;
+        else
+          pixelFormat = TJ.PF_BGRX;
+        intPixels = true;  break;
+      case BufferedImage.TYPE_INT_ARGB:
+      case BufferedImage.TYPE_INT_ARGB_PRE:
+        if (byteOrder == ByteOrder.BIG_ENDIAN)
+          pixelFormat = TJ.PF_ARGB;
+        else
+          pixelFormat = TJ.PF_BGRA;
+        intPixels = true;  break;
+      default:
+        throw new IllegalArgumentException("Unsupported BufferedImage format");
+    }
+    WritableRaster wr = dstImage.getRaster();
+    if (intPixels) {
+      SinglePixelPackedSampleModel sm =
+        (SinglePixelPackedSampleModel)dstImage.getSampleModel();
+      int stride = sm.getScanlineStride();
+      DataBufferInt db = (DataBufferInt)wr.getDataBuffer();
+      int[] buf = db.getData();
+      if (yuvImage != null)
+        decodeYUV(yuvImage.getPlanes(), yuvImage.getOffsets(),
+                  yuvImage.getStrides(), yuvImage.getSubsamp(), buf, 0, 0,
+                  yuvImage.getWidth(), stride, yuvImage.getHeight(),
+                  pixelFormat, flags);
+      else {
+        if (jpegBuf == null)
+          throw new IllegalStateException(NO_ASSOC_ERROR);
+        decompress(jpegBuf, jpegBufSize, buf, 0, 0, scaledWidth, stride,
+                   scaledHeight, pixelFormat, flags);
+      }
+    } else {
+      ComponentSampleModel sm =
+        (ComponentSampleModel)dstImage.getSampleModel();
+      int pixelSize = sm.getPixelStride();
+      if (pixelSize != TJ.getPixelSize(pixelFormat))
+        throw new IllegalArgumentException("Inconsistency between pixel format and pixel size in BufferedImage");
+      int pitch = sm.getScanlineStride();
+      DataBufferByte db = (DataBufferByte)wr.getDataBuffer();
+      byte[] buf = db.getData();
+      decompress(buf, 0, 0, scaledWidth, pitch, scaledHeight, pixelFormat,
+                 flags);
+    }
+  }
+
+  /**
+   * Decompress the JPEG source image or decode the YUV source image associated
+   * with this decompressor instance and return a <code>BufferedImage</code>
+   * instance containing the decompressed/decoded image.
+   *
+   * @param desiredWidth see
+   * {@link #decompress(byte[], int, int, int, int, int, int, int)} for
+   * description
+   *
+   * @param desiredHeight see
+   * {@link #decompress(byte[], int, int, int, int, int, int, int)} for
+   * description
+   *
+   * @param bufferedImageType the image type of the <code>BufferedImage</code>
+   * instance that will be created (for instance,
+   * <code>BufferedImage.TYPE_INT_RGB</code>)
+   *
+   * @param flags the bitwise OR of one or more of
+   * {@link TJ#FLAG_BOTTOMUP TJ.FLAG_*}
+   *
+   * @return a <code>BufferedImage</code> instance containing the
+   * decompressed/decoded image.
+   */
+  public BufferedImage decompress(int desiredWidth, int desiredHeight,
+                                  int bufferedImageType, int flags)
+                                  throws TJException {
+    if ((yuvImage == null && (desiredWidth < 0 || desiredHeight < 0)) ||
+        flags < 0)
+      throw new IllegalArgumentException("Invalid argument in decompress()");
+    int scaledWidth = getScaledWidth(desiredWidth, desiredHeight);
+    int scaledHeight = getScaledHeight(desiredWidth, desiredHeight);
+    BufferedImage img = new BufferedImage(scaledWidth, scaledHeight,
+                                          bufferedImageType);
+    decompress(img, flags);
+    return img;
+  }
+
+  /**
+   * Free the native structures associated with this decompressor instance.
+   */
+  @Override
+  public void close() throws TJException {
+    if (handle != 0)
+      destroy();
+  }
+
+  @Override
+  protected void finalize() throws Throwable {
+    try {
+      close();
+    } catch(TJException e) {
+    } finally {
+      super.finalize();
+    }
+  };
+
+  private native void init() throws TJException;
+
+  private native void destroy() throws TJException;
+
+  private native void decompressHeader(byte[] srcBuf, int size)
+    throws TJException;
+
+  @Deprecated
+  private native void decompress(byte[] srcBuf, int size, byte[] dstBuf,
+    int desiredWidth, int pitch, int desiredHeight, int pixelFormat, int flags)
+    throws TJException;
+
+  private native void decompress(byte[] srcBuf, int size, byte[] dstBuf, int x,
+    int y, int desiredWidth, int pitch, int desiredHeight, int pixelFormat,
+    int flags) throws TJException;
+
+  @Deprecated
+  private native void decompress(byte[] srcBuf, int size, int[] dstBuf,
+    int desiredWidth, int stride, int desiredHeight, int pixelFormat,
+    int flags) throws TJException;
+
+  private native void decompress(byte[] srcBuf, int size, int[] dstBuf, int x,
+    int y, int desiredWidth, int stride, int desiredHeight, int pixelFormat,
+    int flags) throws TJException;
+
+  @Deprecated
+  private native void decompressToYUV(byte[] srcBuf, int size, byte[] dstBuf,
+    int flags) throws TJException;
+
+  private native void decompressToYUV(byte[] srcBuf, int size,
+    byte[][] dstPlanes, int[] dstOffsets, int desiredWidth, int[] dstStrides,
+    int desiredheight, int flags) throws TJException;
+
+  private native void decodeYUV(byte[][] srcPlanes, int[] srcOffsets,
+    int[] srcStrides, int subsamp, byte[] dstBuf, int x, int y, int width,
+    int pitch, int height, int pixelFormat, int flags) throws TJException;
+
+  private native void decodeYUV(byte[][] srcPlanes, int[] srcOffsets,
+    int[] srcStrides, int subsamp, int[] dstBuf, int x, int y, int width,
+    int stride, int height, int pixelFormat, int flags) throws TJException;
+
+  static {
+    TJLoader.load();
+  }
+
+  protected long handle = 0;
+  protected byte[] jpegBuf = null;
+  protected int jpegBufSize = 0;
+  protected YUVImage yuvImage = null;
+  protected int jpegWidth = 0;
+  protected int jpegHeight = 0;
+  protected int jpegSubsamp = -1;
+  protected int jpegColorspace = -1;
+  private ByteOrder byteOrder = null;
+}