Pass camera stream from unity and android plugin

I'm trying to use Firebase's MLKit with unity, trying to use the face detection in my project. While sending a single image works, there is a high ping associated with the plugin call from unity and the time by which the callback actually returns the value. Is there any way to achieve a low latency solution for this, so that a reliable connection can be made?

Unity Code

   public void AndroidRender() {
         tex = new Texture2D(webcamTexture.width, webcamTexture.height);
         textureHolder.GetComponent<RawImage>().texture = tex;
         tex.SetPixels32(webcamTexture.GetPixels32());
         tex.Apply();
     
         byteObject.Call("passByteArray", colorBytes);
         coordinates = byteObject.Call<string>("getData");
     }

Java code

 public passByteArray(byte[] byteArray) {
             if(gotData) {
                 return;     //create new values only if previous one's have been consumed
             }
             //create bitmap
             BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
             bitmapOptions.inMutable = true;
             Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length, bitmapOptions);
             bmp = rotateBitmap(bmp, 90);
     
             FirebaseVisionImage image = FirebaseVisionImage.fromBitmap(bmp);
             //start detection
             FirebaseVisionFaceDetector detector = FirebaseVision.getInstance()
                     .getVisionFaceDetector(options);
             Task<List<FirebaseVisionFace>> result =
                     detector.detectInImage(image)
                             .addOnSuccessListener(
                                     new OnSuccessListener<List<FirebaseVisionFace>>() {
                                         @Override
                                         public void onSuccess(List<FirebaseVisionFace> faces) {
                                             Log.i(TAG, "detecting faces");
                                             for (FirebaseVisionFace face : faces) {
     
                                                 nose = face.getLandmark(6);
                                                 leftEye = face.getLandmark(4);
                                                 rightEye = face.getLandmark(10);
                                                 if (nose != null) {
                                                     FirebaseVisionPoint point = nose.getPosition();
                                                     x_nose = point.getX();
                                                     y_nose = point.getY();
                                                 }
                                                 if (leftEye != null) {
                                                     FirebaseVisionPoint point = leftEye.getPosition();
                                                     x_lEye = point.getX();
                                                     y_rEye = point.getY();
                                                 }
                                                 if (rightEye != null) {
                                                     FirebaseVisionPoint point = rightEye.getPosition();
                                                     x_rEye = point.getX();
                                                     y_rEye = point.getY();
                                                 }
                                             }
                                             if(faces.size() == 0) {
                                                 coordinates = "0.0-0.0-0.0-0.0-0.0-0.0";
                                             } else {
                                                 coordinates = "" + x_nose + "-" + y_nose + "-" + x_lEye + "-" + y_lEye + "-" +  x_rEye + "-" + y_rEye;          //actual value to be returned
                                             }
                                             gotData = true;
                                             //Log.i(TAG,faces.size() + " -> " + x + "-" + y);
                                         }
                                     })
                             .addOnFailureListener(
                                     new OnFailureListener() {
                                         @Override
                                         public void onFailure(@NonNull Exception e) {
                                             Log.i(TAG, "some error");
                                         }
                                     });
         }

The boolean gotData at the start of Java plugin is used to wait till the callback actually returns value before passing back to Unity