/*
* Copyright 1999-2101 Alibaba Group.
*
* Licensed 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 com.alibaba.simpleimage.render;
import java.io.InputStream;
import javax.media.jai.PlanarImage;
import com.alibaba.simpleimage.ImageWrapper;
import com.alibaba.simpleimage.ImageRender;
import com.alibaba.simpleimage.SimpleImageException;
import com.alibaba.simpleimage.util.ImageColorConvertHelper;
import com.alibaba.simpleimage.util.ImageReadHelper;
/**
* ReadRender 支持多种方式读取图片，同时进行颜色空间转换（转成RGB） 目前支持的格式有 JPEG 包括 CMYK和RGB颜色空间 PNG 包括
* 16位、256位颜色，黑白，单一色和真色的PNG GIF 包括GIF 87a和GIF 89a BMP TIFF 包括 16位、256位，灰度等
*
* @author wendell
*/
public class ReadRender extends ImageRender {
protected InputStream inStream;
protected boolean tosRGBColorSpace = true;
protected boolean needClean = false;
public ReadRender(InputStream input, boolean tosRGBColorSpace) {
super(null);
this.inStream = input;
this.tosRGBColorSpace = tosRGBColorSpace;
}
public ReadRender(InputStream input) {
this(input, true);
}
/*
* (non-Javadoc)
* @see com.alibaba.simpleimage.decorator.ImageRender#render()
*/
@Override
public ImageWrapper render() throws SimpleImageException {
try {
ImageWrapper imgWrapper;
if (inStream == null) {
throw new SimpleImageException("No input set");
}
imgWrapper = ImageReadHelper.read(inStream);
if (tosRGBColorSpace) {
for (int i = 0; i < imgWrapper.getNumOfImages(); i++) {
PlanarImage img = ImageColorConvertHelper.convert2sRGB(imgWrapper
.getAsPlanarImage(i));
imgWrapper.setImage(i, img);
}
}
return imgWrapper;
} catch (Exception e) {
throw new SimpleImageException(e);
}
}
/*
* (non-Javadoc)
* @see com.alibaba.simpleimage.decorator.ImageRender#dispose()
*/
@Override
public void dispose() throws SimpleImageException {
super.dispose();
}
}