panner_manager.h

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/*
    Copyright (C) 2012 Paul Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __ardour_panner_manager_h__
#define __ardour_panner_manager_h__

#include <map>
#include <string>
#include <glibmm/module.h>

#include "ardour/panner.h"
#include "ardour/session_handle.h"

namespace ARDOUR {

typedef std::map<std::string,std::string> PannerUriMap;

struct LIBARDOUR_API PannerInfo {

        PanPluginDescriptor descriptor;
        Glib::Module* module;

        PannerInfo (PanPluginDescriptor& d, Glib::Module* m)
        : descriptor (d)
        , module (m)
        {}

        ~PannerInfo () {
                delete module;
        }
};

class LIBARDOUR_API PannerManager : public ARDOUR::SessionHandlePtr
{
public:
        ~PannerManager ();
        static PannerManager& instance ();

        void discover_panners ();
        std::list<PannerInfo*> panner_info;

        PannerInfo* select_panner (ChanCount in, ChanCount out, std::string const uri = "");
        PannerInfo* get_by_uri (std::string uri) const;
        PannerUriMap get_available_panners(uint32_t const a_in, uint32_t const a_out) const;

private:
        PannerManager();
        static PannerManager* _instance;

        PannerInfo* get_descriptor (std::string path);
        int panner_discover (std::string path);
};

} // namespace

#endif /* __ardour_panner_manager_h__ */