rotateframe.h

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#ifndef ROTATEFRAME_H
#define ROTATEFRAME_H

#include "condition.inc"
#include "thread.h"
#include "vframe.inc"

class RotateEngine;

typedef struct
{
        float x, y;
} SourceCoord;

class RotateFrame
{
public:
        RotateFrame(int cpus, int width, int height);
        ~RotateFrame();

// angle is 0 - 360
        void rotate(VFrame *output, 
                VFrame *input, 
                double angle, 
                int interpolate);
        int rotate_rightangle(VFrame *input, 
                VFrame *output, 
                int angle);
        int rotate_obliqueangle(VFrame *input, 
                VFrame *output, 
                double angle,
                int interpolate);
        int get_rightdimensions(VFrame *frame, 
                int &diameter, 
                int &in_x1, 
                int &in_y1, 
                int &in_x2, 
                int &in_y2, 
                int &out_x1, 
                int &out_y1, 
                int &out_x2, 
                int &out_y2);

        int cpus;
        RotateEngine **engine;
// Matrix of source pixel offsets
        int *int_matrix, **int_rows;
// Interpolation uses input coordinates for each output coordinate.
        SourceCoord *float_matrix, **float_rows;
        VFrame *output, *input;
        int interpolate;
        int last_interpolate;
// Compare new angle with old angle
        double last_angle;
        double angle;
};


class RotateEngine : public Thread
{
public:
        RotateEngine(RotateFrame *plugin, int row1, int row2);
        ~RotateEngine();
        
        int generate_matrix(int interpolate);
        int perform_rotation(VFrame *input, 
                VFrame *output, 
                int interpolate);
        int wait_completion();
        int create_matrix();
        int coords_to_pixel(int &input_y, int &input_x);
        int coords_to_pixel(SourceCoord &float_pixel, float &input_y, float &input_x);
        int perform_rotation();
        void run();
        
        int row1, row2;
        int interpolate;
        int do_matrix, do_rotation;
        int done;
        RotateFrame *plugin;
        Condition *input_lock;
        Condition *output_lock;
        VFrame *output;
        VFrame *input;
};

#endif

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