BMPEncodeParam.java
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上传日期:2018-01-04
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- /*
- * 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.
- */
- /**
- * An instance of <code>ImageEncodeParam</code> for encoding images in
- * the BMP format.
- *
- * <p> This class allows for the specification of various parameters
- * while encoding (writing) a BMP format image file. By default, the
- * version used is VERSION_3, no compression is used, and the data layout
- * is bottom_up, such that the pixels are stored in bottom-up order, the
- * first scanline being stored last.
- *
- * <p><b> This class is not a committed part of the JAI API. It may
- * be removed or changed in future releases of JAI.</b>
- *
- */
- public class BMPEncodeParam implements ImageEncodeParam {
- // version constants
- /** Constant for BMP version 2. */
- public static final int VERSION_2 = 0;
- /** Constant for BMP version 3. */
- public static final int VERSION_3 = 1;
- /** Constant for BMP version 4. */
- public static final int VERSION_4 = 2;
- // Default values
- private int version = VERSION_3;
- private boolean compressed = false;
- private boolean topDown = false;
-
- /**
- * Constructs an BMPEncodeParam object with default values for parameters.
- */
- public BMPEncodeParam() {}
- /** Sets the BMP version to be used. */
- public void setVersion(int versionNumber) {
- checkVersion(versionNumber);
- this.version = versionNumber;
- }
- /** Returns the BMP version to be used. */
- public int getVersion() {
- return version;
- }
- /** If set, the data will be written out compressed, if possible. */
- public void setCompressed(boolean compressed) {
- this.compressed = compressed;
- }
- /**
- * Returns the value of the parameter <code>compressed</code>.
- */
- public boolean isCompressed() {
- return compressed;
- }
- /**
- * If set, the data will be written out in a top-down manner, the first
- * scanline being written first.
- */
- public void setTopDown(boolean topDown) {
- this.topDown = topDown;
- }
- /**
- * Returns the value of the <code>topDown</code> parameter.
- */
- public boolean isTopDown() {
- return topDown;
- }
- // Method to check whether we can handle the given version.
- private void checkVersion(int versionNumber) {
- if ( !(versionNumber == VERSION_2 ||
- versionNumber == VERSION_3 ||
- versionNumber == VERSION_4) ) {
- throw new RuntimeException(JaiI18N.getString("BMPEncodeParam0"));
- }
- }
- }