Field Detail

• STREAM_METADATA_NAME

  protected static final String STREAM_METADATA_NAME

  See Also:

  Constant Field Values

• IMAGE_METADATA_NAME

  protected static final String IMAGE_METADATA_NAME

  See Also:

  Constant Field Values

• JPEGParam

  protected JPEGImageWriteParam JPEGParam

  ImageWriteParam for JPEG writer. May be initialized by #initJPEGWriter().

• JPEGWriter

  protected ImageWriter JPEGWriter

  The JPEG writer. May be initialized by #initJPEGWriter().

• writeAbbreviatedStream

  protected boolean writeAbbreviatedStream

  Whether to write abbreviated JPEG streams (default == false). A subclass which sets this to true should also initialized JPEGStreamMetadata.

• JPEGStreamMetadata

  protected IIOMetadata JPEGStreamMetadata

  Stream metadata equivalent to a tables-only stream such as in the JPEGTables. Default value is null. This should be set by any subclass which sets writeAbbreviatedStream to true.

Constructor Detail

• TIFFBaseJPEGCompressor

  public TIFFBaseJPEGCompressor(String compressionType,
                                int compressionTagValue,
                                boolean isCompressionLossless,
                                ImageWriteParam param)

Method Detail

• initJPEGWriter

  protected void initJPEGWriter(boolean supportsStreamMetadata,
                                boolean supportsImageMetadata)

  Initializes the JPEGWriter and JPEGParam instance variables. This method must be called before encode() is invoked.

  Parameters:

  supportsStreamMetadata - Whether the JPEG writer must support JPEG native stream metadata, i.e., be capable of writing abbreviated streams.

  supportsImageMetadata - Whether the JPEG writer must support JPEG native image metadata.

• encode

  public final int encode(byte[] b,
                          int off,
                          int width,
                          int height,
                          int[] bitsPerSample,
                          int scanlineStride)
                   throws IOException

  Description copied from class: TIFFCompressor
  Encodes the supplied image data, writing to the currently set ImageOutputStream.

  Specified by:

  encode in class TIFFCompressor

  Parameters:

  b - an array of bytes containing the packed but uncompressed image data.

  off - the starting offset of the data to be written in the array b.

  width - the width of the rectangle of pixels to be written.

  height - the height of the rectangle of pixels to be written.

  bitsPerSample - an array of ints indicting the number of bits used to represent each image sample within a pixel.

  scanlineStride - the number of bytes separating each row of the input data.

  Returns:

  the number of bytes written.

  Throws:

  IOException - if the supplied data cannot be encoded by this TIFFCompressor, or if any I/O error occurs during writing.

• finalize

  protected void finalize()
                   throws Throwable

  Overrides:

  finalize in class Object

  Throws:

  Throwable