I have try the API. Seems the ImageService do not support join image.
I have piece of code to join as below, it needs to convert to GAE
version . Any idea?
BufferedImage img1 = ImageIO.read(new
ByteArrayInputStream(byte1));
BufferedImage img2 = ImageIO.read(new
ByteArrayInputStream(byte2));
int w = img1.getWidth() + img2.getWidth();
int h = img1.getHeight();
if (img1.getHeight() < img2.getHeight())
h = img2.getHeight();
System.out.println("w:" + w + " h:" + h);
BufferedImage combined = new BufferedImage(w, h,
BufferedImage.TYPE_INT_RGB);
Graphics g = combined.getGraphics();
g.drawImage(img1, 0, 0, null);
g.drawImage(img2, img1.getWidth(), 0, null);
g.dispose();
ByteArrayOutputStream bytes = new
ByteArrayOutputStream();
MemoryCacheImageOutputStream toFs = new
MemoryCacheImageOutputStream(
new BufferedOutputStream(bytes));
ImageWriter writer =
ImageIO.getImageWritersBySuffix(ext).next();
writer.setOutput(toFs);
IIOImage image = new IIOImage(combined, null, null);
ImageWriteParam params = writer.getDefaultWriteParam();
writer.write(null, image, params);
return bytes.toByteArray();
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