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Can't get the Hyperion Java protobuf client to compile

Discussion in 'Development' started by kaiomatico, 14 April 2018.

  1. kaiomatico

    kaiomatico New Member

    RPi3, +Arduino
    Hey everyone, I'm trying to compile the the example code from this site: https://hyperion-project.org/wiki/Protobuffer-Java-client-example

    I'm using eclipse and I installed protobuf-dt, but I can't figure out how to properly do the imports and use protoc on the definition file. It can't find:
    import com.google.protobuf.ByteString;
    import proto.*; ...

    As a background story: I want to create a Java Hyperion Screen grabber for use in Windows which relies on screenshots rather than DirectX 9 or DirectX 11 because that way I can skip HDCP/DRM/Copy protection of Netflix 4k and the Xbox One streaming app. Here is my code I want to add to the protobuf client example in a loop:

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    Rectangle screenRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
    BufferedImage capture = new Robot().createScreenCapture(screenRect);
    ImageIO.write(capture, "jpg", baos);
    byte[] imageData = baos.toByteArray();
    -> send to hyperion

    Would be great if someone could help me with setting up my eclipse!
  2. abrenoch

    abrenoch Member

    RPi1/Zero, RPi2
    Not sure how much help this will be, but I was able to get the protobuf code working in android studio (which I think is similar to eclipse). You can check out the repository for it here:


    I used the gradle plugin to generate my protobuf classes, but wave also used to command line tool from google as well. The gradle version was a bit of a PITA to set up, but it did work in the end.

    Good luck!

    EDIT: In my experience you may need to do some bit manipulation to produce the byte array in the exact format that hyperion is expecting, but you can find that in there too!