Java Code Examples for com.google.appengine.api.images.ImagesServiceFactory#makeImage()
The following examples show how to use
com.google.appengine.api.images.ImagesServiceFactory#makeImage() .
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Example 1
Source File: ImageUtil.java From wmf2svg with Apache License 2.0 | 6 votes |
public byte[] convert(byte[] image, String destType, boolean reverse) { if (destType == null) { throw new IllegalArgumentException("dest type is null."); } else { destType = destType.toLowerCase(); } ImagesService.OutputEncoding encoding = null; if ("png".equals(destType)) { encoding = OutputEncoding.PNG; } else if ("jpeg".equals(destType)) { encoding = OutputEncoding.JPEG; } else { throw new UnsupportedOperationException("unsupported image encoding: " + destType); } ImagesService imagesService = ImagesServiceFactory.getImagesService(); Image bmp = ImagesServiceFactory.makeImage(image); Transform t = (reverse) ? ImagesServiceFactory.makeVerticalFlip() : ImagesServiceFactory.makeCompositeTransform(); return imagesService.applyTransform(t, bmp, encoding).getImageData(); }
Example 2
Source File: GalleryServiceImpl.java From appinventor-extensions with Apache License 2.0 | 4 votes |
/** * when an app is published/updated, we need to move the image * that was temporarily uploaded into projects/projectid/image * into the gallery image * @param app gallery app */ private void setGalleryAppImage(GalleryApp app) { // best thing would be if GCS has a mv op, we can just do that. // don't think that is there, though, so for now read one and write to other // First, read the file from projects name boolean lockForRead = false; //String projectImageKey = app.getProjectImageKey(); GallerySettings settings = loadGallerySettings(); String projectImageKey = settings.getProjectImageKey(app.getProjectId()); try { GcsService gcsService = GcsServiceFactory.createGcsService(); //GcsFilename filename = new GcsFilename(GalleryApp.GALLERYBUCKET, projectImageKey); GcsFilename filename = new GcsFilename(settings.getBucket(), projectImageKey); GcsInputChannel readChannel = gcsService.openReadChannel(filename, 0); InputStream gcsis = Channels.newInputStream(readChannel); byte[] buffer = new byte[8000]; int bytesRead = 0; ByteArrayOutputStream bao = new ByteArrayOutputStream(); while ((bytesRead = gcsis.read(buffer)) != -1) { bao.write(buffer, 0, bytesRead); } // close the project image file readChannel.close(); // if image is greater than 200 X 200, it will be scaled (200 X 200). // otherwise, it will be stored as origin. byte[] oldImageData = bao.toByteArray(); byte[] newImageData; ImagesService imagesService = ImagesServiceFactory.getImagesService(); Image oldImage = ImagesServiceFactory.makeImage(oldImageData); //if image size is too big, scale it to a smaller size. if(oldImage.getWidth() > 200 && oldImage.getHeight() > 200){ Transform resize = ImagesServiceFactory.makeResize(200, 200); Image newImage = imagesService.applyTransform(resize, oldImage); newImageData = newImage.getImageData(); }else{ newImageData = oldImageData; } // set up the cloud file (options) // After publish, copy the /projects/projectId image into /apps/appId //String galleryKey = app.getImageKey(); String galleryKey = settings.getImageKey(app.getGalleryAppId()); //GcsFilename outfilename = new GcsFilename(GalleryApp.GALLERYBUCKET, galleryKey); GcsFilename outfilename = new GcsFilename(settings.getBucket(), galleryKey); GcsFileOptions options = new GcsFileOptions.Builder().mimeType("image/jpeg") .acl("public-read").cacheControl("no-cache").build(); GcsOutputChannel writeChannel = gcsService.createOrReplace(outfilename, options); writeChannel.write(ByteBuffer.wrap(newImageData)); // Now finalize writeChannel.close(); } catch (IOException e) { // TODO Auto-generated catch block LOG.log(Level.INFO, "FAILED WRITING IMAGE TO GCS"); e.printStackTrace(); } }
Example 3
Source File: ImagesServlet.java From java-docs-samples with Apache License 2.0 | 4 votes |
@Override public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException { // [START original_image] // Read the image.jpg resource into a ByteBuffer. FileInputStream fileInputStream = new FileInputStream(new File("WEB-INF/image.jpg")); FileChannel fileChannel = fileInputStream.getChannel(); ByteBuffer byteBuffer = ByteBuffer.allocate((int) fileChannel.size()); fileChannel.read(byteBuffer); byte[] imageBytes = byteBuffer.array(); // Write the original image to Cloud Storage gcsService.createOrReplace( new GcsFilename(bucket, "image.jpeg"), new GcsFileOptions.Builder().mimeType("image/jpeg").build(), ByteBuffer.wrap(imageBytes)); // [END original_image] // [START resize] // Get an instance of the imagesService we can use to transform images. ImagesService imagesService = ImagesServiceFactory.getImagesService(); // Make an image directly from a byte array, and transform it. Image image = ImagesServiceFactory.makeImage(imageBytes); Transform resize = ImagesServiceFactory.makeResize(100, 50); Image resizedImage = imagesService.applyTransform(resize, image); // Write the transformed image back to a Cloud Storage object. gcsService.createOrReplace( new GcsFilename(bucket, "resizedImage.jpeg"), new GcsFileOptions.Builder().mimeType("image/jpeg").build(), ByteBuffer.wrap(resizedImage.getImageData())); // [END resize] // [START rotate] // Make an image from a Cloud Storage object, and transform it. BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService(); BlobKey blobKey = blobstoreService.createGsBlobKey("/gs/" + bucket + "/image.jpeg"); Image blobImage = ImagesServiceFactory.makeImageFromBlob(blobKey); Transform rotate = ImagesServiceFactory.makeRotate(90); Image rotatedImage = imagesService.applyTransform(rotate, blobImage); // Write the transformed image back to a Cloud Storage object. gcsService.createOrReplace( new GcsFilename(bucket, "rotatedImage.jpeg"), new GcsFileOptions.Builder().mimeType("image/jpeg").build(), ByteBuffer.wrap(rotatedImage.getImageData())); // [END rotate] // [START servingUrl] // Create a fixed dedicated URL that points to the GCS hosted file ServingUrlOptions options = ServingUrlOptions.Builder.withGoogleStorageFileName("/gs/" + bucket + "/image.jpeg") .imageSize(150) .crop(true) .secureUrl(true); String url = imagesService.getServingUrl(options); // [END servingUrl] // Output some simple HTML to display the images we wrote to Cloud Storage // in the browser. PrintWriter out = resp.getWriter(); out.println("<html><body>\n"); out.println( "<img src='//storage.cloud.google.com/" + bucket + "/image.jpeg' alt='AppEngine logo' />"); out.println( "<img src='//storage.cloud.google.com/" + bucket + "/resizedImage.jpeg' alt='AppEngine logo resized' />"); out.println( "<img src='//storage.cloud.google.com/" + bucket + "/rotatedImage.jpeg' alt='AppEngine logo rotated' />"); out.println("<img src='" + url + "' alt='Hosted logo' />"); out.println("</body></html>\n"); }
Example 4
Source File: MakeImageTest.java From appengine-tck with Apache License 2.0 | 4 votes |
private void assertMakeImageCanReadImage(byte[] imageData) { Image image = ImagesServiceFactory.makeImage(imageData); assertNotNull(image); }
Example 5
Source File: ImagesServiceTestBase.java From appengine-tck with Apache License 2.0 | 4 votes |
protected Image readImage(String filename) throws IOException { return ImagesServiceFactory.makeImage(toByteArray(getImageStream(filename))); }