Package org.libjpegturbo.turbojpeg

Class TJDecompressor

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable
    Direct Known Subclasses:
    TJTransformer
    public class TJDecompressor
extends java.lang.Object
implements java.io.Closeable
    TurboJPEG decompressor

    • Constructor Summary

      Constructors 
      Constructor Description
      TJDecompressor()
      Create a TurboJPEG decompresssor instance.
      TJDecompressor​(byte[] jpegImage)
      Create a TurboJPEG decompressor instance and associate the JPEG source image or "abbreviated table specification" (AKA "tables-only") datastream stored in jpegImage with the newly created instance.
      TJDecompressor​(byte[] jpegImage, int imageSize)
      Create a TurboJPEG decompressor instance and associate the JPEG source image or "abbreviated table specification" (AKA "tables-only") datastream of length imageSize bytes stored in jpegImage with the newly created instance.
      TJDecompressor​(YUVImage yuvImage)
      Create a TurboJPEG decompressor instance and associate the 8-bit-per-sample planar YUV source image stored in yuvImage with the newly created instance.

    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      void close()
      Free the native structures associated with this decompressor instance.
      void decompress​(byte[] dstBuf, int x, int y, int desiredWidth, int pitch, int desiredHeight, int pixelFormat, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompress8(byte[], int, int, int, int) instead.
      void decompress​(int[] dstBuf, int x, int y, int desiredWidth, int stride, int desiredHeight, int pixelFormat, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompress8(int[], int, int, int, int) instead.
      java.awt.image.BufferedImage decompress​(int desiredWidth, int desiredHeight, int bufferedImageType, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompress8(int) instead.
      byte[] decompress​(int desiredWidth, int pitch, int desiredHeight, int pixelFormat, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompress8(int, int) instead.
      void decompress​(java.awt.image.BufferedImage dstImage, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompress8(BufferedImage) instead.
      short[] decompress12​(int pitch, int pixelFormat)
      Decompress the 12-bit-per-sample JPEG source image associated with this decompressor instance and return a buffer containing a 12-bit-per-sample packed-pixel decompressed image.
      void decompress12​(short[] dstBuf, int x, int y, int pitch, int pixelFormat)
      Decompress the 12-bit-per-sample JPEG source image associated with this decompressor instance and output a 12-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.
      short[] decompress16​(int pitch, int pixelFormat)
      Decompress the 16-bit-per-sample JPEG source image associated with this decompressor instance and return a buffer containing a 16-bit-per-sample packed-pixel decompressed image.
      void decompress16​(short[] dstBuf, int x, int y, int pitch, int pixelFormat)
      Decompress the 16-bit-per-sample lossless JPEG source image associated with this decompressor instance and output a 16-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.
      void decompress8​(byte[] dstBuf, int x, int y, int pitch, int pixelFormat)
      Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and output an 8-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.
      java.awt.image.BufferedImage decompress8​(int bufferedImageType)
      Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and return a BufferedImage instance containing the 8-bit-per-sample packed-pixel decompressed/decoded image.
      void decompress8​(int[] dstBuf, int x, int y, int stride, int pixelFormat)
      Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and output an 8-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.
      byte[] decompress8​(int pitch, int pixelFormat)
      Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and return a buffer containing an 8-bit-per-sample packed-pixel decompressed image.
      void decompress8​(java.awt.image.BufferedImage dstImage)
      Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and output an 8-bit-per-sample packed-pixel decompressed/decoded image to the given BufferedImage instance.
      YUVImage decompressToYUV​(int align)
      Decompress the 8-bit-per-sample JPEG source image associated with this decompressor instance into an 8-bit-per-sample unified planar YUV image and return a YUVImage instance containing the decompressed image.
      YUVImage decompressToYUV​(int[] strides)
      Decompress the 8-bit-per-sample JPEG source image associated with this decompressor instance into a set of 8-bit-per-sample Y, U (Cb), and V (Cr) image planes and return a YUVImage instance containing the decompressed image planes.
      YUVImage decompressToYUV​(int desiredWidth, int[] strides, int desiredHeight, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompressToYUV(int[]) instead.
      YUVImage decompressToYUV​(int desiredWidth, int align, int desiredHeight, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompressToYUV(int) instead.
      void decompressToYUV​(YUVImage dstImage)
      Decompress the 8-bit-per-sample JPEG source image associated with this decompressor instance into an 8-bit-per-sample planar YUV image and store it in the given YUVImage instance.
      void decompressToYUV​(YUVImage dstImage, int flags)
      Deprecated.
      Use set(), setScalingFactor(), and decompressToYUV(YUVImage) instead.
      protected void finalize()  
      int get​(int param)
      Get the value of a decompression parameter.
      int getColorspace()
      Deprecated.
      Use get(TJ.PARAM_COLORSPACE) instead.
      int getHeight()
      Returns the height of the source image (JPEG or YUV) associated with this decompressor instance.
      byte[] getJPEGBuf()
      Returns the JPEG buffer associated with this decompressor instance.
      int getJPEGSize()
      Returns the size of the JPEG image (in bytes) associated with this decompressor instance.
      int getScaledHeight​(int desiredWidth, int desiredHeight)
      Deprecated.
      Use setScalingFactor() and TJScalingFactor.getScaled() instead.
      int getScaledWidth​(int desiredWidth, int desiredHeight)
      Deprecated.
      Use setScalingFactor() and TJScalingFactor.getScaled() instead.
      int getSubsamp()
      Deprecated.
      Use get(TJ.PARAM_SUBSAMP) instead.
      int getWidth()
      Returns the width of the source image (JPEG or YUV) associated with this decompressor instance.
      void set​(int param, int value)
      Set the value of a decompression parameter.
      void setCroppingRegion​(java.awt.Rectangle croppingRegion)
      Set the cropping region for partially decompressing a lossy JPEG image into a packed-pixel image.
      void setScalingFactor​(TJScalingFactor scalingFactor)
      Set the scaling factor for subsequent lossy decompression operations.
      void setSourceImage​(byte[] jpegImage, int imageSize)
      Associate the JPEG image or "abbreviated table specification" (AKA "tables-only") datastream of length imageSize bytes stored in jpegImage with this decompressor instance.
      void setSourceImage​(YUVImage srcImage)
      Associate the specified planar YUV source image with this decompressor instance.

      • Methods inherited from class java.lang.Object

        clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • TJDecompressor

        public TJDecompressor()
               throws TJException
        Create a TurboJPEG decompresssor instance.
        Throws:
        TJException

      • TJDecompressor

        public TJDecompressor​(byte[] jpegImage)
               throws TJException
        Create a TurboJPEG decompressor instance and associate the JPEG source image or "abbreviated table specification" (AKA "tables-only") datastream stored in jpegImage with the newly created instance. Refer to setSourceImage(byte[], int) for more details.
        Parameters:
        jpegImage - buffer containing a JPEG source image or tables-only datastream. (The size of the JPEG image or datastream is assumed to be the length of the array.) This buffer is not modified.
        Throws:
        TJException

      • TJDecompressor

        public TJDecompressor​(byte[] jpegImage,
                      int imageSize)
               throws TJException
        Create a TurboJPEG decompressor instance and associate the JPEG source image or "abbreviated table specification" (AKA "tables-only") datastream of length imageSize bytes stored in jpegImage with the newly created instance. Refer to setSourceImage(byte[], int) for more details.
        Parameters:
        jpegImage - buffer containing a JPEG source image or tables-only datastream. This buffer is not modified.
        imageSize - size of the JPEG source image or tables-only datastream (in bytes)
        Throws:
        TJException

      • TJDecompressor

        public TJDecompressor​(YUVImage yuvImage)
               throws TJException
        Create a TurboJPEG decompressor instance and associate the 8-bit-per-sample planar YUV source image stored in yuvImage with the newly created instance. Refer to setSourceImage(YUVImage) for more details.
        Parameters:
        yuvImage - YUVImage instance containing a planar YUV source image to be decoded. This image is not modified.
        Throws:
        TJException

    • Method Detail

      • setSourceImage

        public void setSourceImage​(byte[] jpegImage,
                           int imageSize)
                    throws TJException
        Associate the JPEG image or "abbreviated table specification" (AKA "tables-only") datastream of length imageSize bytes stored in jpegImage with this decompressor instance. If jpegImage contains a JPEG image, then this image will be used as the source image for subsequent decompression operations. Passing a tables-only datastream to this method primes the decompressor with quantization and Huffman tables that can be used when decompressing subsequent "abbreviated image" datastreams. This is useful, for instance, when decompressing video streams in which all frames share the same quantization and Huffman tables. If a JPEG image is passed to this method, then the parameters that describe the JPEG image will be set when the method returns.
        Parameters:
        jpegImage - buffer containing a JPEG source image or tables-only datastream. This buffer is not modified.
        imageSize - size of the JPEG source image or tables-only datastream (in bytes)
        Throws:
        TJException

      • setSourceImage

        public void setSourceImage​(YUVImage srcImage)
        Associate the specified planar YUV source image with this decompressor instance. Subsequent decompression operations will decode this image into a packed-pixel RGB or grayscale destination image. This method sets TJ.PARAM_SUBSAMP to the chrominance subsampling level of the source image.
        Parameters:
        srcImage - YUVImage instance containing a planar YUV source image to be decoded. This image is not modified.

      • getWidth

        public int getWidth()
        Returns the width of the source image (JPEG or YUV) associated with this decompressor instance.
        Returns:
        the width of the source image (JPEG or YUV) associated with this decompressor instance.

      • getHeight

        public int getHeight()
        Returns the height of the source image (JPEG or YUV) associated with this decompressor instance.
        Returns:
        the height of the source image (JPEG or YUV) associated with this decompressor instance.

      • set

        public void set​(int param,
                int value)
        Set the value of a decompression parameter.
        Parameters:
        param - one of TJ.PARAM_*
        value - value of the decompression parameter (refer to parameter documentation)

      • get

        public int get​(int param)
        Get the value of a decompression parameter.
        Parameters:
        param - one of TJ.PARAM_*
        Returns:
        the value of the specified decompression parameter, or -1 if the value is unknown.

      • setScalingFactor

        public void setScalingFactor​(TJScalingFactor scalingFactor)
        Set the scaling factor for subsequent lossy decompression operations.
        Parameters:
        scalingFactor - TJScalingFactor instance that specifies a fractional scaling factor that the decompressor supports (see TJ.getScalingFactors()), or TJ.UNSCALED for no scaling. Decompression scaling is a function of the IDCT algorithm, so scaling factors are generally limited to multiples of 1/8. If the entire JPEG image will be decompressed, then the width and height of the scaled destination image can be determined by calling scalingFactor.getScaled() with the JPEG image width and height (see getWidth() and getHeight().) When decompressing into a planar YUV image, an intermediate buffer copy will be performed if the width or height of the scaled destination image is not an even multiple of the MCU block size (see TJ.getMCUWidth() and TJ.getMCUHeight().) Note that decompression scaling is not available (and the specified scaling factor is ignored) when decompressing lossless JPEG images (see TJ.PARAM_LOSSLESS), since the IDCT algorithm is not used with those images. Note also that TJ.PARAM_FASTDCT is ignored when decompression scaling is enabled.

      • setCroppingRegion

        public void setCroppingRegion​(java.awt.Rectangle croppingRegion)
                       throws TJException
        Set the cropping region for partially decompressing a lossy JPEG image into a packed-pixel image.
        Parameters:
        croppingRegion - java.awt.Rectangle instance that specifies a subregion of the JPEG image to decompress, or TJ.UNCROPPED for no cropping. The left boundary of the cropping region must be evenly divisible by the scaled MCU block width, which can be determined by calling TJScalingFactor.getScaled() with the specified scaling factor (see setScalingFactor()) and the MCU block width (see TJ.getMCUWidth()) for the level of chrominance subsampling in the JPEG image (see TJ.PARAM_SUBSAMP.) The cropping region should be specified relative to the scaled image dimensions. Unless croppingRegion is TJ.UNCROPPED, the JPEG header must be read (see setSourceImage(byte[], int) prior to calling this method.
        Throws:
        TJException

      • getSubsamp

        @Deprecated
public int getSubsamp()
        Deprecated.
        Use get(TJ.PARAM_SUBSAMP) instead.

      • getJPEGBuf

        public byte[] getJPEGBuf()
        Returns the JPEG buffer associated with this decompressor instance.
        Returns:
        the JPEG buffer associated with this decompressor instance.

      • getJPEGSize

        public int getJPEGSize()
        Returns the size of the JPEG image (in bytes) associated with this decompressor instance.
        Returns:
        the size of the JPEG image (in bytes) associated with this decompressor instance.

      • decompress8

        public void decompress8​(byte[] dstBuf,
                        int x,
                        int y,
                        int pitch,
                        int pixelFormat)
                 throws TJException
        Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and output an 8-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.

        NOTE: The destination image is fully recoverable if this method throws a non-fatal TJException (unless TJ.PARAM_STOPONWARNING is set.)

        Parameters:
        dstBuf - buffer that will receive the packed-pixel decompressed/decoded image. This buffer should normally be pitch * destinationHeight bytes in size. However, the buffer may also be larger, in which case the x, y, and pitch parameters can be used to specify the region into which the source image should be decompressed/decoded. NOTE: If the source image is a lossy JPEG image, then destinationHeight is either the scaled JPEG height (see setScalingFactor(), TJScalingFactor.getScaled(), and getHeight()) or the height of the cropping region (see setCroppingRegion().) If the source image is a YUV image or a lossless JPEG image, then destinationHeight is the height of the source image.
        x - x offset (in pixels) of the region in the destination image into which the source image should be decompressed/decoded
        y - y offset (in pixels) of the region in the destination image into which the source image should be decompressed/decoded
        pitch - bytes per row in the destination image. Normally this should be set to destinationWidth * TJ.getPixelSize(pixelFormat), if the destination image will be unpadded. (Setting this parameter to 0 is the equivalent of setting it to destinationWidth * TJ.getPixelSize(pixelFormat).) However, you can also use this parameter to specify the row alignment/padding of the destination image, to skip rows, or to decompress/decode into a specific region of a larger image. NOTE: if the source image is a lossy JPEG image, then destinationWidth is either the scaled JPEG width (see setScalingFactor(), TJScalingFactor.getScaled(), and getWidth()) or the width of the cropping region (see setCroppingRegion().) If the source image is a YUV image or a lossless JPEG image, then destinationWidth is the width of the source image.
        pixelFormat - pixel format of the decompressed/decoded image (one of TJ.PF_*)
        Throws:
        TJException

      • decompress8

        public byte[] decompress8​(int pitch,
                          int pixelFormat)
                   throws TJException
        Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and return a buffer containing an 8-bit-per-sample packed-pixel decompressed image.
        Parameters:
        pitch - see decompress8(byte[], int, int, int, int) for description
        pixelFormat - pixel format of the decompressed image (one of TJ.PF_*)
        Returns:
        a buffer containing an 8-bit-per-sample packed-pixel decompressed image.
        Throws:
        TJException

      • decompress12

        public void decompress12​(short[] dstBuf,
                         int x,
                         int y,
                         int pitch,
                         int pixelFormat)
                  throws TJException
        Decompress the 12-bit-per-sample JPEG source image associated with this decompressor instance and output a 12-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.

        NOTE: The destination image is fully recoverable if this method throws a non-fatal TJException (unless TJ.PARAM_STOPONWARNING is set.)

        Parameters:
        dstBuf - buffer that will receive the packed-pixel decompressed image. This buffer should normally be pitch * destinationHeight samples in size. However, the buffer may also be larger, in which case the x, y, and pitch parameters can be used to specify the region into which the source image should be decompressed. NOTE: If the source image is a lossy JPEG image, then destinationHeight is either the scaled JPEG height (see setScalingFactor(), TJScalingFactor.getScaled(), and getHeight()) or the height of the cropping region (see setCroppingRegion().) If the source image is a lossless JPEG image, then destinationHeight is the height of the source image.
        x - x offset (in pixels) of the region in the destination image into which the source image should be decompressed
        y - y offset (in pixels) of the region in the destination image into which the source image should be decompressed
        pitch - samples per row in the destination image. Normally this should be set to destinationWidth * TJ.getPixelSize(pixelFormat), if the destination image will be unpadded. (Setting this parameter to 0 is the equivalent of setting it to destinationWidth * TJ.getPixelSize(pixelFormat).) However, you can also use this parameter to specify the row alignment/padding of the destination image, to skip rows, or to decompress into a specific region of a larger image. NOTE: if the source image is a lossy JPEG image, then destinationWidth is either the scaled JPEG width (see setScalingFactor(), TJScalingFactor.getScaled(), and getWidth()) or the width of the cropping region (see setCroppingRegion().) If the source image is a YUV image or a lossless JPEG image, then destinationWidth is the width of the source image.
        pixelFormat - pixel format of the decompressed image (one of TJ.PF_*)
        Throws:
        TJException

      • decompress12

        public short[] decompress12​(int pitch,
                            int pixelFormat)
                     throws TJException
        Decompress the 12-bit-per-sample JPEG source image associated with this decompressor instance and return a buffer containing a 12-bit-per-sample packed-pixel decompressed image.
        Parameters:
        pitch - see decompress12(short[], int, int, int, int) for description
        pixelFormat - pixel format of the decompressed image (one of TJ.PF_*)
        Returns:
        a buffer containing an 8-bit-per-sample packed-pixel decompressed image.
        Throws:
        TJException

      • decompress16

        public void decompress16​(short[] dstBuf,
                         int x,
                         int y,
                         int pitch,
                         int pixelFormat)
                  throws TJException
        Decompress the 16-bit-per-sample lossless JPEG source image associated with this decompressor instance and output a 16-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.

        NOTE: The destination image is fully recoverable if this method throws a non-fatal TJException (unless TJ.PARAM_STOPONWARNING is set.)

        Parameters:
        dstBuf - buffer that will receive the packed-pixel decompressed image. This buffer should normally be pitch * jpegHeight samples in size. However, the buffer may also be larger, in which case the x, y, and pitch parameters can be used to specify the region into which the source image should be decompressed.
        x - x offset (in pixels) of the region in the destination image into which the source image should be decompressed
        y - y offset (in pixels) of the region in the destination image into which the source image should be decompressed
        pitch - samples per row in the destination image. Normally this should be set to jpegWidth * TJ.getPixelSize(pixelFormat), if the destination image will be unpadded. (Setting this parameter to 0 is the equivalent of setting it to jpegWidth * TJ.getPixelSize(pixelFormat).) However, you can also use this parameter to specify the row alignment/padding of the destination image, to skip rows, or to decompress into a specific region of a larger image.
        pixelFormat - pixel format of the decompressed image (one of TJ.PF_*)
        Throws:
        TJException

      • decompress16

        public short[] decompress16​(int pitch,
                            int pixelFormat)
                     throws TJException
        Decompress the 16-bit-per-sample JPEG source image associated with this decompressor instance and return a buffer containing a 16-bit-per-sample packed-pixel decompressed image.
        Parameters:
        pitch - see decompress16(short[], int, int, int, int) for description
        pixelFormat - pixel format of the decompressed image (one of TJ.PF_*)
        Returns:
        a buffer containing an 8-bit-per-sample packed-pixel decompressed image.
        Throws:
        TJException

      • decompressToYUV

        public void decompressToYUV​(YUVImage dstImage)
                     throws TJException
        Decompress the 8-bit-per-sample JPEG source image associated with this decompressor instance into an 8-bit-per-sample planar YUV image and store it in the given YUVImage instance. This method performs JPEG decompression but leaves out the color conversion step, so a planar YUV image is generated instead of a packed-pixel image. This method cannot be used to decompress JPEG source images with the CMYK or YCCK colorspace.

        NOTE: The planar YUV destination image is fully recoverable if this method throws a non-fatal TJException (unless TJ.PARAM_STOPONWARNING is set.)

        Parameters:
        dstImage - YUVImage instance that will receive the planar YUV decompressed image. The level of subsampling specified in this YUVImage instance must match that of the JPEG image, and the width and height specified in the YUVImage instance must match the scaled JPEG width and height (see setScalingFactor(), TJScalingFactor.getScaled(), getWidth(), and getHeight().)
        Throws:
        TJException

      • decompressToYUV

        public YUVImage decompressToYUV​(int[] strides)
                         throws TJException
        Decompress the 8-bit-per-sample JPEG source image associated with this decompressor instance into a set of 8-bit-per-sample Y, U (Cb), and V (Cr) image planes and return a YUVImage 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 a packed-pixel image. This method cannot be used to decompress JPEG source images with the CMYK or YCCK colorspace.
        Parameters:
        strides - an array of integers, each specifying the number of bytes per row in the corresponding plane of the YUV image. Setting the stride for any plane to 0 is the same as setting it to the scaled plane width (see YUVImage.) If strides is null, then the strides for all planes will be set to their respective scaled plane widths. You can adjust the strides in order to add an arbitrary amount of row padding to each plane.
        Returns:
        a YUVImage instance containing the decompressed image planes
        Throws:
        TJException

      • decompressToYUV

        public YUVImage decompressToYUV​(int align)
                         throws TJException
        Decompress the 8-bit-per-sample JPEG source image associated with this decompressor instance into an 8-bit-per-sample unified planar YUV image and return a YUVImage 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 a packed-pixel image. This method cannot be used to decompress JPEG source images with the CMYK or YCCK colorspace.
        Parameters:
        align - row alignment (in bytes) of the YUV image (must be a power of 2.) Setting this parameter to n will cause each row in each plane of the YUV image to be padded to the nearest multiple of n bytes (1 = unpadded.)
        Returns:
        a YUVImage instance containing the unified planar YUV decompressed image
        Throws:
        TJException

      • decompress8

        public void decompress8​(int[] dstBuf,
                        int x,
                        int y,
                        int stride,
                        int pixelFormat)
                 throws TJException
        Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and output an 8-bit-per-sample packed-pixel grayscale, RGB, or CMYK image to the given destination buffer.

        NOTE: The destination image is fully recoverable if this method throws a non-fatal TJException (unless TJ.PARAM_STOPONWARNING is set.)

        Parameters:
        dstBuf - buffer that will receive the packed-pixel decompressed/decoded image. This buffer should normally be stride * destinationHeight pixels in size. However, the buffer may also be larger, in which case the x, y, and pitch parameters can be used to specify the region into which the source image should be decompressed/decoded. NOTE: If the source image is a lossy JPEG image, then destinationHeight is either the scaled JPEG height (see setScalingFactor(), TJScalingFactor.getScaled(), and getHeight()) or the height of the cropping region (see setCroppingRegion().) If the source image is a YUV image or a lossless JPEG image, then destinationHeight is the height of the source image.
        x - x offset (in pixels) of the region in the destination image into which the source image should be decompressed/decoded
        y - y offset (in pixels) of the region in the destination image into which the source image should be decompressed/decoded
        stride - pixels per row in the destination image. Normally this should be set to destinationWidth. (Setting this parameter to 0 is the equivalent of setting it to destinationWidth.) However, you can also use this parameter to skip rows or to decompress/decode into a specific region of a larger image. NOTE: if the source image is a lossy JPEG image, then destinationWidth is either the scaled JPEG width (see setScalingFactor(), TJScalingFactor.getScaled(), and getWidth()) or the width of the cropping region (see setCroppingRegion().) If the source image is a YUV image or a lossless JPEG image, then destinationWidth is the width of the source image.
        pixelFormat - pixel format of the decompressed/decoded image (one of TJ.PF_*)
        Throws:
        TJException

      • decompress8

        public void decompress8​(java.awt.image.BufferedImage dstImage)
                 throws TJException
        Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and output an 8-bit-per-sample packed-pixel decompressed/decoded image to the given BufferedImage instance.

        NOTE: The destination image is fully recoverable if this method throws a non-fatal TJException (unless TJ.PARAM_STOPONWARNING is set.)

        Parameters:
        dstImage - a BufferedImage instance that will receive the packed-pixel decompressed/decoded image. If the source image is a lossy JPEG image, then the width and height of the BufferedImage instance must match the scaled JPEG width and height (see setScalingFactor(), TJScalingFactor.getScaled(), getWidth(), and getHeight()) or the width and height of the cropping region (see setCroppingRegion().) If the source image is a YUV image or a lossless JPEG image, then the width and height of the BufferedImage instance must match the width and height of the source image.
        Throws:
        TJException

      • decompress8

        public java.awt.image.BufferedImage decompress8​(int bufferedImageType)
                                         throws TJException
        Decompress the 8-bit-per-sample JPEG source image or decode the planar YUV source image associated with this decompressor instance and return a BufferedImage instance containing the 8-bit-per-sample packed-pixel decompressed/decoded image.
        Parameters:
        bufferedImageType - the image type of the BufferedImage instance that will be created (for instance, BufferedImage.TYPE_INT_RGB)
        Returns:
        a BufferedImage instance containing the 8-bit-per-sample packed-pixel decompressed/decoded image.
        Throws:
        TJException

      • close

        public void close()
           throws TJException
        Free the native structures associated with this decompressor instance.
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Throws:
        TJException

      • finalize

        protected void finalize()
                 throws java.lang.Throwable
        Overrides:
        finalize in class java.lang.Object
        Throws:
        java.lang.Throwable