import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
-import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import be.nikiroo.utils.Image;
import be.nikiroo.utils.ImageUtils;
+import be.nikiroo.utils.StringUtils;
/**
* This class offer some utilities based around images and uses java.awt.
* @author niki
*/
public class ImageUtilsAwt extends ImageUtils {
+ @Override
+ protected boolean check() {
+ // Will not work if ImageIO is not available
+ ImageIO.getCacheDirectory();
+ return true;
+ }
+
@Override
public void saveAsImage(Image img, File target, String format)
throws IOException {
* in case of IO error
*/
public static BufferedImage fromImage(Image img) throws IOException {
- InputStream in = new ByteArrayInputStream(img.getData());
-
- int orientation;
- try {
- orientation = getExifTransorm(in);
- } catch (Exception e) {
- // no EXIF transform, ok
- orientation = -1;
- }
-
- in.reset();
+ InputStream in = img.newInputStream();
BufferedImage image;
try {
- image = ImageIO.read(in);
- } catch (IllegalArgumentException e) {
- throw e;
- } catch (Exception e) {
- throw new IOException("Undocumented exception occured, "
- + "converting to IOException", e);
- }
+ int orientation;
+ try {
+ orientation = getExifTransorm(in);
+ } catch (Exception e) {
+ // no EXIF transform, ok
+ orientation = -1;
+ }
- if (image == null) {
- throw new IOException("Failed to convert input to image");
- }
+ in.reset();
- // Note: this code has been found on Internet;
- // thank you anonymous coder.
- int width = image.getWidth();
- int height = image.getHeight();
- AffineTransform affineTransform = new AffineTransform();
-
- switch (orientation) {
- case 1:
- affineTransform = null;
- break;
- case 2: // Flip X
- affineTransform.scale(-1.0, 1.0);
- affineTransform.translate(-width, 0);
- break;
- case 3: // PI rotation
- affineTransform.translate(width, height);
- affineTransform.rotate(Math.PI);
- break;
- case 4: // Flip Y
- affineTransform.scale(1.0, -1.0);
- affineTransform.translate(0, -height);
- break;
- case 5: // - PI/2 and Flip X
- affineTransform.rotate(-Math.PI / 2);
- affineTransform.scale(-1.0, 1.0);
- break;
- case 6: // -PI/2 and -width
- affineTransform.translate(height, 0);
- affineTransform.rotate(Math.PI / 2);
- break;
- case 7: // PI/2 and Flip
- affineTransform.scale(-1.0, 1.0);
- affineTransform.translate(-height, 0);
- affineTransform.translate(0, width);
- affineTransform.rotate(3 * Math.PI / 2);
- break;
- case 8: // PI / 2
- affineTransform.translate(0, width);
- affineTransform.rotate(3 * Math.PI / 2);
- break;
- default:
- affineTransform = null;
- break;
- }
+ try {
+ image = ImageIO.read(in);
+ } catch (IllegalArgumentException e) {
+ throw e;
+ } catch (Exception e) {
+ throw new IOException("Undocumented exception occured, "
+ + "converting to IOException", e);
+ }
+
+ if (image == null) {
+ String extra = "";
+ if (img.getSize() <= 2048) {
+ try {
+ extra = ", content: "
+ + new String(img.getData(), "UTF-8");
+ } catch (Exception e) {
+ extra = ", content unavailable";
+ }
+ }
+ String ssize = StringUtils.formatNumber(img.getSize());
+ throw new IOException(
+ "Failed to convert input to image, size was: " + ssize
+ + extra);
+ }
- if (affineTransform != null) {
- AffineTransformOp affineTransformOp = new AffineTransformOp(
- affineTransform, AffineTransformOp.TYPE_BILINEAR);
+ // Note: this code has been found on Internet;
+ // thank you anonymous coder.
+ int width = image.getWidth();
+ int height = image.getHeight();
+ AffineTransform affineTransform = new AffineTransform();
+
+ switch (orientation) {
+ case 1:
+ affineTransform = null;
+ break;
+ case 2: // Flip X
+ affineTransform.scale(-1.0, 1.0);
+ affineTransform.translate(-width, 0);
+ break;
+ case 3: // PI rotation
+ affineTransform.translate(width, height);
+ affineTransform.rotate(Math.PI);
+ break;
+ case 4: // Flip Y
+ affineTransform.scale(1.0, -1.0);
+ affineTransform.translate(0, -height);
+ break;
+ case 5: // - PI/2 and Flip X
+ affineTransform.rotate(-Math.PI / 2);
+ affineTransform.scale(-1.0, 1.0);
+ break;
+ case 6: // -PI/2 and -width
+ affineTransform.translate(height, 0);
+ affineTransform.rotate(Math.PI / 2);
+ break;
+ case 7: // PI/2 and Flip
+ affineTransform.scale(-1.0, 1.0);
+ affineTransform.translate(-height, 0);
+ affineTransform.translate(0, width);
+ affineTransform.rotate(3 * Math.PI / 2);
+ break;
+ case 8: // PI / 2
+ affineTransform.translate(0, width);
+ affineTransform.rotate(3 * Math.PI / 2);
+ break;
+ default:
+ affineTransform = null;
+ break;
+ }
- BufferedImage transformedImage = new BufferedImage(width, height,
- image.getType());
- transformedImage = affineTransformOp
- .filter(image, transformedImage);
+ if (affineTransform != null) {
+ AffineTransformOp affineTransformOp = new AffineTransformOp(
+ affineTransform, AffineTransformOp.TYPE_BILINEAR);
- image = transformedImage;
+ BufferedImage transformedImage = new BufferedImage(width,
+ height, image.getType());
+ transformedImage = affineTransformOp.filter(image,
+ transformedImage);
+
+ image = transformedImage;
+ }
+ //
+ } finally {
+ in.close();
}
- //
return image;
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff