it.geosolutions.imageioimpl.plugins.tiff
Class TIFFRLECompressor
Object
TIFFCompressor
TIFFFaxCompressor
TIFFRLECompressor
- Direct Known Subclasses:
- TIFFCodecLibRLECompressor
public class TIFFRLECompressor
- extends TIFFFaxCompressor
Fields inherited from class TIFFFaxCompressor |
bits, BLACK, byteTable, horz, horzMode, inverseFill, makeupCodes, makeupCodesBlack, makeupCodesWhite, ndex, pass, passMode, termCodes, termCodesBlack, termCodesWhite, vert, vertMode, WHITE |
Method Summary |
int |
encode(byte[] b,
int off,
int width,
int height,
int[] bitsPerSample,
int scanlineStride)
Encodes the supplied image data, writing to the currently set
ImageOutputStream . |
int |
encodeRLE(byte[] data,
int rowOffset,
int colOffset,
int rowLength,
byte[] compData)
Encode a row of data using Modified Huffman Compression also known as
CCITT RLE (Run Lenth Encoding). |
Methods inherited from class Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TIFFRLECompressor
public TIFFRLECompressor()
encodeRLE
public int encodeRLE(byte[] data,
int rowOffset,
int colOffset,
int rowLength,
byte[] compData)
- Encode a row of data using Modified Huffman Compression also known as
CCITT RLE (Run Lenth Encoding).
- Parameters:
data
- The row of data to compress.rowOffset
- Starting index in data
.colOffset
- Bit offset within first data[rowOffset]
.rowLength
- Number of bits in the row.compData
- The compressed data.
- Returns:
- The number of bytes saved in the compressed data array.
encode
public 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 byte
s 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 int
s 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.
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