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 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.
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