hvirtual/plugins/whirl/whirl.h

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#ifndef WHIRL_H
#define WHIRL_H

#define MAXANGLE 360
#define MAXPINCH 100
#define MAXRADIUS 100

class WhirlMain;
class WhirlEngine;

#include "bcbase.h"
#include "whirlwindow.h"
#include "pluginvclient.h"


class WhirlMain : public PluginVClient
{
public:
        WhirlMain(int argc, char *argv[]);
        ~WhirlMain();

// required for all realtime plugins
        int process_realtime(long size, VFrame **input_ptr, VFrame **output_ptr);
        int plugin_is_realtime();
        int plugin_is_multi_channel();
        char* plugin_title();
        int start_realtime();
        int stop_realtime();
        int start_gui();
        int stop_gui();
        int show_gui();
        int hide_gui();
        int set_string();
        int load_defaults();
        int save_defaults();
        int save_data(char *text);
        int read_data(char *text);

// parameters needed
        int reconfigure();    // Rebuild tables
        int angle;
        int pinch;
        int radius;
        int automated_function;
        int reconfigure_flag;
        VFrame *temp_frame;

// a thread for the GUI
        WhirlThread *thread;

private:
        BC_Hash *defaults;
        WhirlEngine **engine;
};

class WhirlEngine : public Thread
{
public:
        WhirlEngine(WhirlMain *plugin, int start_y, int end_y);
        ~WhirlEngine();
        
        int start_process_frame(VFrame **output, VFrame **input, int size);
        int wait_process_frame();
        void run();

        int calc_undistorted_coords(double  wx,
                         double wy,
                         double &whirl,
                         double &pinch,
                         double &x,
                         double &y);
        inline VWORD bilinear(double x, double y, VWORD *values)
        {
                double m0, m1;
                x = fmod(x, 1.0);
                y = fmod(y, 1.0);

                if(x < 0.0) x += 1.0;
                if(y < 0.0) y += 1.0;

                m0 = (double)values[0] + x * ((double)values[1] - values[0]);
                m1 = (double)values[2] + x * ((double)values[3] - values[2]);
                return (VWORD)(m0 + y * (m1 - m0));
        }
        void get_pixel(const int &x, const int &y, VPixel *pixel, VPixel **input_rows);

        WhirlMain *plugin;
        int start_y;
        int end_y;
        int size;
        VFrame **output, **input;
        int last_frame;
        Mutex input_lock, output_lock;
        double radius, radius2, radius3, pinch;
        double scale_x, scale_y;
        double cen_x, cen_y;
};


#endif

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