private void roundtrip(
FormatInfo formatInfo, BufferedImage testImage, String tempPrefix, boolean imageExact)
throws IOException, ImageReadException, ImageWriteException {
File temp1 = createTempFile(tempPrefix + ".", "." + formatInfo.format.extension);
// Debug.debug("tempFile: " + tempFile.getName());
Map params = new HashMap();
Sanselan.writeImage(testImage, temp1, formatInfo.format, params);
Map readParams = new HashMap();
readParams.put(SanselanConstants.BUFFERED_IMAGE_FACTORY, new RgbBufferedImageFactory());
BufferedImage image2 = Sanselan.getBufferedImage(temp1, readParams);
assertNotNull(image2);
if (imageExact) {
// note tolerance when comparing grayscale images
// BufferedImages of
compareImagesExact(testImage, image2);
}
File temp2 = createTempFile(tempPrefix + ".", "." + formatInfo.format.extension);
// Debug.debug("tempFile: " + tempFile.getName());
Sanselan.writeImage(image2, temp2, formatInfo.format, params);
compareFilesExact(temp1, temp2);
}
/**
* translate a binary array to a buffered image
*
* @param binary
* @return
* @throws IOException
*/
@Override
public final BufferedImage toBufferedImage(byte[] bytes, String format) throws IOException {
try {
return Sanselan.getBufferedImage(new ByteArrayInputStream(bytes));
} catch (ImageReadException e) {
throw ExceptionUtil.toIOException(e);
}
}
/**
* translate a file resource to a buffered image
*
* @param res
* @return
* @throws IOException
*/
@Override
public final BufferedImage toBufferedImage(Resource res, String format) throws IOException {
InputStream is = null;
try {
return Sanselan.getBufferedImage(is = res.getInputStream());
} catch (ImageReadException e) {
throw ExceptionUtil.toIOException(e);
} finally {
IOUtil.closeEL(is);
}
}
public static BufferedImage readBmp(InputStream is) throws ImageReadException, IOException {
return Sanselan.getBufferedImage(is);
}