/*

 * Copyright 2000-2001 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package com.sun.imageio.spi;

import java.io.File;

import java.io.IOException;

import java.io.OutputStream;

import java.util.Locale;

import javax.imageio.spi.ImageOutputStreamSpi;

import javax.imageio.stream.ImageOutputStream;

import javax.imageio.stream.FileCacheImageOutputStream;

import javax.imageio.stream.MemoryCacheImageOutputStream;

public class OutputStreamImageOutputStreamSpi extends ImageOutputStreamSpi {

    private static final String vendorName = "Sun Microsystems, Inc.";

    private static final String version = "1.0";

    private static final Class outputClass = OutputStream.class;

    public OutputStreamImageOutputStreamSpi() {

        super(vendorName, version, outputClass);

    }

    public String getDescription(Locale locale) {

        return "Service provider that instantiates an OutputStreamImageOutputStream from an OutputStream";

    }

    public boolean canUseCacheFile() {

        return true;

    }

    public boolean needsCacheFile() {

        return false;

    }

    public ImageOutputStream createOutputStreamInstance(Object output,

                                                        boolean useCache,

                                                        File cacheDir)

        throws IOException {

        if (output instanceof OutputStream) {

            OutputStream os = (OutputStream)output;

            if (useCache) {

                return new FileCacheImageOutputStream(os, cacheDir);

            } else {

                return new MemoryCacheImageOutputStream(os);

            }

        } else {

            throw new IllegalArgumentException();

        }

    }

}