| /* |
| * 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.sanselan.formats.png; |
| |
| import java.awt.image.BufferedImage; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.commons.sanselan.ImageReadException; |
| import org.apache.commons.sanselan.formats.png.chunks.PngChunkPlte; |
| import org.apache.commons.sanselan.formats.transparencyfilters.TransparencyFilter; |
| |
| public class ScanExpediterSimple extends ScanExpediter |
| { |
| public ScanExpediterSimple(int width, int height, InputStream is, |
| BufferedImage bi, int color_type, int BitDepth, int bitsPerPixel, |
| PngChunkPlte pngChunkPLTE, GammaCorrection gammaCorrection, |
| TransparencyFilter transparencyFilter) |
| |
| { |
| super(width, height, is, bi, color_type, BitDepth, bitsPerPixel, |
| pngChunkPLTE, gammaCorrection, transparencyFilter); |
| } |
| |
| @Override |
| public void drive() throws ImageReadException, IOException |
| { |
| int bitsPerScanLine = bitsPerPixel * width; |
| int pixelBytesPerScanLine = getBitsToBytesRoundingUp(bitsPerScanLine); |
| byte prev[] = null; |
| |
| for (int y = 0; y < height; y++) |
| { |
| byte unfiltered[] = getNextScanline(is, pixelBytesPerScanLine, |
| prev, bytesPerPixel); |
| |
| prev = unfiltered; |
| |
| BitParser bitParser = new BitParser(unfiltered, bitsPerPixel, |
| bitDepth); |
| |
| for (int x = 0; x < width; x++) |
| { |
| int rgb = getRGB(bitParser, x); |
| |
| bi.setRGB(x, y, rgb); |
| } |
| } |
| |
| } |
| } |