Please tell me how to apply the image overlay filter to the kurento group call.

[김민지]

I'm trying this way at UserSession.java.

However, the image does not appear on the video.

I think the image path will be correct because the image has already been successful in the example of the kurento-magic-mirror.

``` java

public void receiveVideoFrom(UserSession sender, String sdpOffer) throws IOException {

    log.info("USER {}: connecting with {} in room {}", this.name, sender.getName(), this.roomName);

    log.trace("USER {}: SdpOffer for {} is {}", this.name, sender.getName(), sdpOffer);

    //image Overlay Filter

    System.out.println("[UserSession] receiveVideoFrom image 필터 씌우기");

    ImageOverlayFilter imageOverlayFilter=new ImageOverlayFilter.Builder(pipeline).build();

    String imageId = "testImage";

    String imageUri = "/home/ubuntu/image/flower.jpg";

    System.out.println("image start imageId: "+imageId+" imageUri: "+imageUri+" pipeline: "+pipeline);

    //imageOverlayFilter.removeImage(imageId);

    imageOverlayFilter.addImage(imageId, imageUri, 0.4f, 0.4f, 0.4f, 0.4f, true, true);

    this.getEndpointForUser(sender).connect(imageOverlayFilter);

    imageOverlayFilter.connect(this.getEndpointForUser(sender));

    System.out.println("[UserSession] sdpSession start");

    final String ipSdpAnswer = this.getEndpointForUser(sender).processOffer(sdpOffer);

    final JsonObject scParams = new JsonObject();

    scParams.addProperty("id", "receiveVideoAnswer");

    scParams.addProperty("name", sender.getName());

    scParams.addProperty("sdpAnswer", ipSdpAnswer);

    log.trace("USER {}: SdpAnswer for {} is {}", this.name, sender.getName(), ipSdpAnswer);

    this.sendMessage(scParams);

    log.debug("gather candidates");

    this.getEndpointForUser(sender).gatherCandidates();

  }

```

[김민지]

I solved the problem by connecting the pipeline in the following way.

UserSession.java

...

 sender.getOutgoingWebRtcPeer().connect(imageOverlayFilter);

 imageOverlayFilter.connect(incoming);

...

2021년 8월 3일 화요일 오후 2시 33분 0초 UTC+9에 김민지님이 작성: