PamWriter.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.imaging.formats.pnm;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import org.apache.commons.imaging.ImagingException;
final class PamWriter implements PnmWriter {
@Override
public void writeImage(final BufferedImage src, final OutputStream os, final PnmImagingParameters params) throws ImagingException, IOException {
os.write(PnmConstants.PNM_PREFIX_BYTE);
os.write(PnmConstants.PAM_RAW_CODE);
os.write(PnmConstants.PNM_NEWLINE);
final int width = src.getWidth();
final int height = src.getHeight();
os.write(("WIDTH " + width).getBytes(StandardCharsets.US_ASCII));
os.write(PnmConstants.PNM_NEWLINE);
os.write(("HEIGHT " + height).getBytes(StandardCharsets.US_ASCII));
os.write(PnmConstants.PNM_NEWLINE);
os.write("DEPTH 4".getBytes(StandardCharsets.US_ASCII));
os.write(PnmConstants.PNM_NEWLINE);
os.write("MAXVAL 255".getBytes(StandardCharsets.US_ASCII));
os.write(PnmConstants.PNM_NEWLINE);
os.write("TUPLTYPE RGB_ALPHA".getBytes(StandardCharsets.US_ASCII));
os.write(PnmConstants.PNM_NEWLINE);
os.write("ENDHDR".getBytes(StandardCharsets.US_ASCII));
os.write(PnmConstants.PNM_NEWLINE);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
final int argb = src.getRGB(x, y);
final int alpha = 0xff & argb >> 24;
final int red = 0xff & argb >> 16;
final int green = 0xff & argb >> 8;
final int blue = 0xff & argb >> 0;
os.write((byte) red);
os.write((byte) green);
os.write((byte) blue);
os.write((byte) alpha);
}
}
}
}