service_ptr_t<visualisation_stream_v3> stream;
{
  static_api_ptr_t<visualisation_manager> m;
  m->create_stream(stream, visualisation_manager::KStreamFlagNewFFT);
}

//! Entrypoint service for visualisation processing; use this to create visualisation_stream objects that can be used to retrieve properties of currently played audio. \n
//! Implemented by core; do not reimplement.\n
//! Use visualisation_manager::get() to obtain an instance, e.g. visualisation_manager::get()->create_stream(mystream,0);
class NOVTABLE visualisation_manager : public service_base {
	FB2K_MAKE_SERVICE_COREAPI(visualisation_manager);
public:
	//! Creates a visualisation_stream object. See visualisation_stream for more info.
	//! @param p_out Receives newly created visualisation_stream instance.
	//! @param p_flags Combination of one or more KStreamFlag* values. Currently only KStreamFlagNewFFT is defined.
	//! It's recommended that you set p_flags to KStreamFlagNewFFT to get the new FFT behavior (better quality and result normalization), the old behavior for null flags is preserved for compatibility with old components that rely on it.
	virtual void create_stream(service_ptr_t<visualisation_stream> & p_out,unsigned p_flags) = 0;

	enum {
		//! New FFT behavior for spectrum-generating methods, available in 0.9.5.2 and newer: output normalized to 0..1, Gauss window used instead of rectangluar (better quality / less aliasing).
		//! It's recommended to always set this flag. The old behavior is preserved for backwards compatibility.
		KStreamFlagNewFFT = 1 << 0,
	};


	//! Wrapper around non-template create_stream(); retrieves one of newer visualisation_stream_* interfaces rather than base visualisation_stream interface. Throws exception_service_extension_not_found() when running too old foobar2000 version for the requested interface.
	template<typename t_streamptr>
	void create_stream(t_streamptr & out, unsigned flags) {
		visualisation_stream::ptr temp; create_stream(temp, flags);
		if (!temp->service_query_t(out)) throw exception_service_extension_not_found();
	}
};

  visualisation_stream::ptr vis_stream = NULL;
  visualisation_manager::get()->create_stream(vis_stream, 0);