feedback.h

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/*
 * Copyright (C) 2020-2021 Luciano Iam <oss@lucianoiam.com>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef _ardour_surface_websockets_feedback_h_
#define _ardour_surface_websockets_feedback_h_
 
#include <memory>
 
#include "pbd/abstract_ui.h"
#include "pbd/mutex.h"
 
#include "component.h"
#include "typed_value.h"
#include "mixer.h"
 
namespace ArdourSurface {
 
class FeedbackHelperUI : public AbstractUI<BaseUI::BaseRequestObject>
{
public:
        FeedbackHelperUI ();
        ~FeedbackHelperUI ();
 
protected:
        virtual void do_request (BaseUI::BaseRequestObject*);
};
 
class ArdourFeedback : public SurfaceComponent
{
public:
        ArdourFeedback (ArdourSurface::ArdourWebsockets& surface)
            : SurfaceComponent (surface){};
        virtual ~ArdourFeedback (){};
 
        int start ();
        int stop ();
 
        void update_all (std::string, TypedValue) const;
        void update_all (std::string, uint32_t, TypedValue) const;
        void update_all (std::string, uint32_t, uint32_t, TypedValue) const;
        void update_all (std::string, uint32_t, uint32_t, uint32_t, TypedValue) const;
 
private:
        PBD::Mutex      _client_state_lock;
        PBD::ScopedConnectionList _transport_connections;
        sigc::connection          _periodic_connection;
 
        // Only needed for server event loop integration method #3
        mutable FeedbackHelperUI  _helper;
 
        PBD::EventLoop* event_loop () const;
 
        bool poll () const;
 
        void observe_transport ();
        void observe_mixer ();
        void observe_strip_plugins (uint32_t, ArdourMixerStrip::PluginMap&);
};
 
} // namespace ArdourSurface
 
#endif // _ardour_surface_websockets_feedback_h_