bccapture.h

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#ifndef BCCAPTURE_H
#define BCCAPTURE_H

#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>

#include "sizes.h"
#include "vframe.inc"


class BC_Capture
{
public:
        BC_Capture(int w, int h, char *display_path = "");
        virtual ~BC_Capture();

        int init_window(char *display_path);
// x1 and y1 are automatically adjusted if out of bounds
        int capture_frame(VFrame *frame, int &x1, int &y1);
        int get_w();
        int get_h();

        int w, h, default_depth;
        unsigned char **row_data;

private:
        int allocate_data();
        int delete_data();
        int get_top_w();
        int get_top_h();
        
        inline void import_RGB565_to_RGB888(unsigned char* &output, unsigned char* &input)
        {
                *output++ = (*input & 0xf800) >> 8;
                *output++ = (*input & 0x7e0) >> 3;
                *output++ = (*input & 0x1f) << 3;

                input += 2;
                output += 3;
        };

        inline void import_BGR888_to_RGB888(unsigned char* &output, unsigned char* &input)
        {
                *output++ = input[2];
                *output++ = input[1];
                *output++ = input[0];

                input += 3;
                output += 3;
        };

        inline void import_BGR8888_to_RGB888(unsigned char* &output, unsigned char* &input)
        {
                *output++ = input[2];
                *output++ = input[1];
                *output++ = input[0];

                input += 4;
                output += 3;
        };

        int use_shm;
        int bitmap_color_model;
        unsigned char *data;
        XImage *ximage;
        XShmSegmentInfo shm_info;
        Display* display;
        Window rootwin;
        Visual *vis;
        int bits_per_pixel;
        int screen;
        long shm_event_type;
        int client_byte_order, server_byte_order;
};

#endif

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