AdvanceOptions

struct AdvanceOptions {
  ENCODING_PREFERENCE encodingPreference;
  COMPRESSION_PREFERENCE compressionPreference;
  bool encodeAlpha;
  AdvanceOptions() : encodingPreference(PREFER_AUTO), 
                     compressionPreference(PREFER_LOW_LATENCY),
                     encodeAlpha(false) {}

  AdvanceOptions(ENCODING_PREFERENCE encoding_preference, 
                 COMPRESSION_PREFERENCE compression_preference,
                 bool encode_alpha) : 
                 encodingPreference(encoding_preference),
                 compressionPreference(compression_preference),
                 encodeAlpha(encode_alpha) {}

  bool operator==(const AdvanceOptions& rhs) const {
    return encodingPreference == rhs.encodingPreference && 
           compressionPreference == rhs.compressionPreference &&
           encodeAlpha == rhs.encodeAlpha;
  }
};