帆软使用的第三方框架。
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package com.fr.third.JAI;
/*
* Copyright (c) 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduct the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed,licensed or intended for use in
* the design, construction, operation or maintenance of any nuclear facility.
*/
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.io.InputStream;
import java.io.IOException;
/**
* An interface describing objects that transform an InputStream into a
* BufferedImage or Raster.
*
* <p><b> This interface is not a committed part of the JAI API. It may
* be removed or changed in future releases of JAI.</b>
*/
public interface ImageDecoder {
/**
* Returns the current parameters as an instance of the
* ImageDecodeParam interface. Concrete implementations of this
* interface will return corresponding concrete implementations of
* the ImageDecodeParam interface. For example, a JPEGImageDecoder
* will return an instance of JPEGDecodeParam.
*/
ImageDecodeParam getParam();
/**
* Sets the current parameters to an instance of the
* ImageDecodeParam interface. Concrete implementations
* of ImageDecoder may throw a RuntimeException if the
* param argument is not an instance of the appropriate
* subclass or subinterface. For example, a JPEGImageDecoder
* will expect param to be an instance of JPEGDecodeParam.
*/
void setParam(ImageDecodeParam param);
/** Returns the SeekableStream associated with this ImageDecoder. */
SeekableStream getInputStream();
/** Returns the number of pages present in the current stream. */
int getNumPages() throws IOException;
/**
* Returns a Raster that contains the decoded contents of the
* SeekableStream associated with this ImageDecoder. Only
* the first page of a multi-page image is decoded.
*/
Raster decodeAsRaster() throws IOException;
/**
* Returns a Raster that contains the decoded contents of the
* SeekableStream associated with this ImageDecoder.
* The given page of a multi-page image is decoded. If
* the page does not exist, an IOException will be thrown.
* Page numbering begins at zero.
*
* @param page The page to be decoded.
*/
Raster decodeAsRaster(int page) throws IOException;
/**
* Returns a RenderedImage that contains the decoded contents of the
* SeekableStream associated with this ImageDecoder. Only
* the first page of a multi-page image is decoded.
*/
RenderedImage decodeAsRenderedImage() throws IOException;
/**
* Returns a RenderedImage that contains the decoded contents of the
* SeekableStream associated with this ImageDecoder.
* The given page of a multi-page image is decoded. If
* the page does not exist, an IOException will be thrown.
* Page numbering begins at zero.
*
* @param page The page to be decoded.
*/
RenderedImage decodeAsRenderedImage(int page) throws IOException;
}