nom.tam.image.tile.operation.buffer.TileBuffer Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of nom-tam-fits Show documentation

Java library for reading and writing FITS files. FITS, the Flexible Image Transport System, is the format commonly used in the archiving and transport of astronomical data.

There is a newer version: 1.20.2

Show newest version

package nom.tam.image.tile.operation.buffer;

/*
 * #%L
 * nom.tam FITS library
 * %%
 * Copyright (C) 1996 - 2015 nom-tam-fits
 * %%
 * This is free and unencumbered software released into the public domain.
 * 
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
 * binary, for any purpose, commercial or non-commercial, and by any
 * means.
 * 
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 * #L%
 */

import java.nio.Buffer;

import nom.tam.util.type.PrimitiveType;

/**
 * This view on the image data represents a tileOperation that is row based, so
 * a tileOperation that fills the whole width of the image.
 */
public abstract class TileBuffer {

    private Buffer imageBuffer;

    private final int height;

    private final int offset;

    /**
     * the tileOperation this view is connected to
     */
    private final PrimitiveType baseType;

    private final int width;

    protected TileBuffer(PrimitiveType baseType, int dataOffset, int width, int height) {
        this.baseType = baseType;
        this.offset = dataOffset;
        this.width = width;
        this.height = height;
    }

    /**
     * nothing to do in the normal case, overwrite this method if post
     * processing is necessary.
     */
    public void finish() {
    }

    public PrimitiveType getBaseType() {
        return this.baseType;
    }

    public abstract Buffer getBuffer();

    public int getHeight() {
        return this.height;
    }

    /**
     * @return the number of pixels in the tileOperation this view represents.
     */
    public int getPixelSize() {
        return this.width * this.height;
    }

    public int getWidth() {
        return this.width;
    }

    public TileBuffer setData(Buffer value) {
        value.position(this.offset);
        this.imageBuffer = this.baseType.sliceBuffer(value);
        return this;
    }

    protected Buffer getImageBuffer() {
        return this.imageBuffer;
    }

}