| /* |
| * Copyright (c) 2003, 2017, Oracle and/or its affiliates. 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.imageio.plugins.bmp; |
| |
| import java.util.Locale; |
| import javax.imageio.ImageWriteParam; |
| |
| import com.sun.imageio.plugins.bmp.BMPConstants; |
| import com.sun.imageio.plugins.bmp.BMPCompressionTypes; |
| |
| /** |
| * A subclass of {@code ImageWriteParam} for encoding images in |
| * the BMP format. |
| * |
| * <p> This class allows for the specification of various parameters |
| * while writing a BMP format image file. By default, the data layout |
| * is bottom-up, such that the pixels are stored in bottom-up order, |
| * the first scanline being stored last. |
| * |
| * <p>The particular compression scheme to be used can be specified by using |
| * the {@code setCompressionType()} method with the appropriate type |
| * string. The compression scheme specified will be honored if and only if it |
| * is compatible with the type of image being written. If the specified |
| * compression scheme is not compatible with the type of image being written |
| * then the {@code IOException} will be thrown by the BMP image writer. |
| * If the compression type is not set explicitly then {@code getCompressionType()} |
| * will return {@code null}. In this case the BMP image writer will select |
| * a compression type that supports encoding of the given image without loss |
| * of the color resolution. |
| * <p>The compression type strings and the image type(s) each supports are |
| * listed in the following |
| * table: |
| * |
| * <table class="striped"> |
| * <caption>Compression Types</caption> |
| * <thead> |
| * <tr> |
| * <th scope="col">Type String |
| * <th scope="col">Description |
| * <th scope="col">Image Types |
| * </thead> |
| * <tbody> |
| * <tr> |
| * <th scope="row">BI_RGB |
| * <td>Uncompressed RLE |
| * <td>{@literal <= } 8-bits/sample |
| * <tr> |
| * <th scope="row">BI_RLE8 |
| * <td>8-bit Run Length Encoding |
| * <td>{@literal <=} 8-bits/sample |
| * <tr> |
| * <th scope="row">BI_RLE4 |
| * <td>4-bit Run Length Encoding |
| * <td>{@literal <=} 4-bits/sample |
| * <tr> |
| * <th scope="row">BI_BITFIELDS |
| * <td>Packed data |
| * <td>16 or 32 bits/sample |
| * </tbody> |
| * </table> |
| */ |
| public class BMPImageWriteParam extends ImageWriteParam { |
| |
| private boolean topDown = false; |
| |
| /** |
| * Constructs a {@code BMPImageWriteParam} set to use a given |
| * {@code Locale} and with default values for all parameters. |
| * |
| * @param locale a {@code Locale} to be used to localize |
| * compression type names and quality descriptions, or |
| * {@code null}. |
| */ |
| public BMPImageWriteParam(Locale locale) { |
| super(locale); |
| |
| // Set compression types ("BI_RGB" denotes uncompressed). |
| compressionTypes = BMPCompressionTypes.getCompressionTypes(); |
| |
| // Set compression flag. |
| canWriteCompressed = true; |
| compressionMode = MODE_COPY_FROM_METADATA; |
| compressionType = compressionTypes[BMPConstants.BI_RGB]; |
| } |
| |
| /** |
| * Constructs an {@code BMPImageWriteParam} object with default |
| * values for all parameters and a {@code null Locale}. |
| */ |
| public BMPImageWriteParam() { |
| this(null); |
| } |
| |
| /** |
| * If set, the data will be written out in a top-down manner, the first |
| * scanline being written first. |
| * |
| * @param topDown whether the data are written in top-down order. |
| */ |
| public void setTopDown(boolean topDown) { |
| this.topDown = topDown; |
| } |
| |
| /** |
| * Returns the value of the {@code topDown} parameter. |
| * The default is {@code false}. |
| * |
| * @return whether the data are written in top-down order. |
| */ |
| public boolean isTopDown() { |
| return topDown; |
| } |
| } |