public RenderedImage convertCMYKtoRGB(byte[] bytes, String type, boolean fork) {
ImageMagick imageMagick = getImageMagick();
if (!imageMagick.isEnabled()) {
return null;
}
File inputFile = _fileUtil.createTempFile(type);
File outputFile = _fileUtil.createTempFile(type);
try {
_fileUtil.write(inputFile, bytes);
IMOperation imOperation = new IMOperation();
imOperation.addRawArgs("-format", "%[colorspace]");
imOperation.addImage(inputFile.getPath());
String[] output = imageMagick.identify(imOperation.getCmdArgs(), fork);
if ((output.length == 1) && output[0].equalsIgnoreCase("CMYK")) {
if (_log.isInfoEnabled()) {
_log.info("The image is in the CMYK colorspace");
}
imOperation = new IMOperation();
imOperation.addRawArgs("-colorspace", "RGB");
imOperation.addImage(inputFile.getPath());
imOperation.addImage(outputFile.getPath());
imageMagick.convert(imOperation.getCmdArgs(), fork);
bytes = _fileUtil.getBytes(outputFile);
return read(bytes, type);
}
} catch (Exception e) {
if (_log.isErrorEnabled()) {
_log.error(e, e);
}
} finally {
_fileUtil.delete(inputFile);
_fileUtil.delete(outputFile);
}
return null;
}
/**
* 根据尺寸缩放图片[等比例缩放:参数height为null,按宽度缩放比例缩放;参数width为null,按高度缩放比例缩放]
*
* @param imagePath 源图片路径
* @param newPath 处理后图片路径
* @param width 缩放后的图片宽度
* @param height 缩放后的图片高度
* @return 返回true说明缩放成功,否则失败
*/
public static boolean zoomImage(
String imagePath, String newPath, Integer width, Integer height, String quality) {
boolean flag = false;
try {
IMOperation op = new IMOperation();
op.addImage(imagePath);
if (width == null) { // 根据高度缩放图片
op.resize(null, height);
} else if (height == null) { // 根据宽度缩放图片
op.resize(width, null);
} else {
op.resize(width, height);
}
op.addImage(newPath);
if ((quality != null && quality.equals(""))) {
op.addRawArgs("-quality", quality);
}
ConvertCmd convert = new ConvertCmd(true);
if (OS_NAME.indexOf("win") >= 0) {
// linux下不要设置此值，不然会报错
String path = getGraphicsMagickPath();
if (StringUtils.isNotBlank(path)) convert.setSearchPath(path);
}
convert.run(op);
flag = true;
} catch (IOException e) {
flag = false;
e.printStackTrace();
} catch (InterruptedException e) {
flag = false;
e.printStackTrace();
} catch (IM4JavaException e) {
flag = false;
e.printStackTrace();
} finally {
}
return flag;
}