filter_node.h

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#ifndef MF_FLOW_FILTER_NODE_H_
#define MF_FLOW_FILTER_NODE_H_

#include "node.h"
#include <memory>
#include <utility>

namespace mf { namespace flow {

class filter;
class graph;
class node_job;

class filter_node : public node {
private:
    std::unique_ptr<filter> filter_;

protected:
    void setup_filter();
    void pre_process_filter(node_job&);
    void process_filter(node_job&);
    

public:
    filter_node(graph& gr);
    ~filter_node();
    
    template<typename Filter, typename... Args>
    Filter& set_filter(Args&&... args) {
        Filter* filter = new Filter(*this, std::forward<Args>(args)...);
        filter_.reset(filter);
        return *filter;
    }
    
    filter& this_filter() { return *filter_; }
    const filter& this_filter() const { return *filter_; }
    
    virtual node_input& add_input(time_unit past_window, time_unit future_window) = 0;
    virtual node_output& add_output(const frame_format& format) = 0;
};

}}

#endif