Convert ImageProxy to Jpeg or Png

I just started with androidX camera, I'm using it's functionality imagecatpure.takePicture() , and I get ImageProxy as an object, so now my question is how can i convert this to jpeg/png/jpg so I can upload the image through an api?

is there another more efficient way to achieve this?

I have solved the issue by using the below code

    private void takePicture() {
        if (imageCapture != null) {
            ByteArrayOutputStream result = new ByteArrayOutputStream();
            getCacheDir();
            imageCapture.takePicture(new ImageCapture.OutputFileOptions.Builder(result).build(),
                    Executors.newSingleThreadExecutor(),
                    new ImageCapture.OnImageSavedCallback() {
                        @Override
                        public void onImageSaved(@NonNull ImageCapture.OutputFileResults outputFileResults) {
                            File cache = new File(getCacheDir().getAbsolutePath() + "/" + "captured.png");
                            try (FileOutputStream stream = new FileOutputStream(cache)) {
                                stream.write(result.toByteArray());
                                upload(cache); // your upload function
                            } catch (Exception e) {
                                Log.e(TAG, "onImageSaved: Exception occurred", e);
                            }
                        }

                        @Override
                        public void onError(@NonNull ImageCaptureException exception) {
                            Log.i(TAG, "onError: ", exception);
                        }
                    });
        }
    }

thanks to @Commonsware