org.lsst.ccs.utilities.image

Class FitsFileWriter

java.lang.Object

org.lsst.ccs.utilities.image.FitsFileWriter

All Implemented Interfaces:

Closeable, AutoCloseable

public class FitsFileWriter
extends Object
implements Closeable

A utility for writing FITS files following LSST conventions.

Author:

tonyj

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FitsFileWriter.BitsPerPixel

Constructor Summary

Constructors

Constructor and Description
FitsFileWriter(File file, ImageSet images, Map<String,Map<String,Object>> metaData, Map<String,HeaderSpecification> config, FitsFileWriter.BitsPerPixel bits) Open an LSST FITS file for writing a CCD ImageSet.

Method Summary

Modifier and Type	Method and Description
void	close()
void	write(int imageIndex, ByteBuffer src) Write the actual image data to the file.

Methods inherited from class java.lang.Object

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

Constructor Detail

FitsFileWriter

public FitsFileWriter(File file,
                      ImageSet images,
                      Map<String,Map<String,Object>> metaData,
                      Map<String,HeaderSpecification> config,
                      FitsFileWriter.BitsPerPixel bits)
               throws IOException,
                      nom.tam.fits.FitsException

Open an LSST FITS file for writing a CCD ImageSet.

Parameters:

file - The file to write to

images - The ImageSet to write to the file. Note that this specifies the images to write, not the actual data for the images.

metaData - The meta-data maps to use to extract header info from

config - The configuration which controls how meta data is written to the file

bits - The number of bits per pixel for images

Throws:

IOException

nom.tam.fits.FitsException

Method Detail

write

public void write(int imageIndex,
                  ByteBuffer src)
           throws IOException

Write the actual image data to the file. It is not necessary that all of the data for the image be available at once, this method will write whatever data is currently available in the byte buffer to the specified image, and will keep track of how much has been written to each image to allow more data to be written later. This method assumes the data is given in the order it is to be written to the file. If any data reordering is needed it needs to be done before calling this method.

Parameters:

imageIndex - The image to which this data is to be written

src - The image

Throws:

IOException - If an IOException is generated, or if more data is sent than was expected for a particular image.

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException