@java.lang.Override
    public int getSerializedSize() {
      int size = memoizedSize;
      if (size != -1) return size;

      size = 0;
      if (java.lang.Double.doubleToRawLongBits(saturation_) != 0) {
        size += com.google.protobuf.CodedOutputStream.computeDoubleSize(1, saturation_);
      }
      if (java.lang.Double.doubleToRawLongBits(contrast_) != 0) {
        size += com.google.protobuf.CodedOutputStream.computeDoubleSize(2, contrast_);
      }
      if (java.lang.Double.doubleToRawLongBits(brightness_) != 0) {
        size += com.google.protobuf.CodedOutputStream.computeDoubleSize(3, brightness_);
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSize = size;
      return size;
    }
<pre>
Control brightness of the video. Enter a value between -1 and 1, where -1
is minimum brightness and 1 is maximum brightness. 0 is no change. The
default is 0.
</pre>

<code>double brightness = 3;</code>

@return The brightness.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/PreprocessingConfig.java