#define ednet_display_destroy (d)     (d)

typedef struct _EDNetDisplay EDNetDisplay;

A display object to draw video frame images

typedef struct
{
  int x;
  int y;
  int width;
  int height;
} EDNetRect;

Defines the position and size of a retangle.

EDNetDisplay    *ednet_display_new                  (EDNetWindow   window);

Creates a new display object within specified window handle as a parent window.

EDNetDisplay    *ednet_display_ref                  (EDNetDisplay *d);

Adds a reference to the display.

void             ednet_display_unref                (EDNetDisplay *d);

Removes a reference from the display, deallocating the display if no references remain.

void             ednet_display_put_video            (EDNetDisplay *d,
                                                     EDNetFrame   *frame);

Draws a video frame on the screen.

void             ednet_display_draw                 (EDNetDisplay *d);

Redraws the last video frame on the screen.

void             ednet_display_set_visible          (EDNetDisplay *d,
                                                     int           visible);

Determines whether video images should be visible or invisible.

void             ednet_display_set_area             (EDNetDisplay *d,
                                                     EDNetRect    *area);

Sets the position and size of the display window in the parent window.

void             ednet_display_set_src_area         (EDNetDisplay *d,
                                                     EDNetRect    *area);

Sets the position and size of the video image to draw on the window.

void             ednet_display_set_dest_area        (EDNetDisplay *d,
                                                     EDNetRect    *area);

Sets the position and size of the display window on which it draws video images.

void             ednet_display_set_border_thickness (EDNetDisplay *d,
                                                     int           thickness);

Set the thickness of borders within display area.

void             ednet_display_set_border_color     (EDNetDisplay *d,
                                                     uint32_t      color);

Set the color of borders within display area.

int              ednet_display_get_screen_depth     (EDNetDisplay *d);

Returns the depth of current display screen.

It may be 8, 16, 24 or 32.

EDNetFrameFormat ednet_display_get_frame_format     (EDNetDisplay *d);

Returns the frame format suitable for current display screen.

void             ednet_display_get_window_size      (EDNetDisplay *d,
                                                     EDNetRect    *area);

Retrieves the size of internal display window.

void             ednet_display_set_bg               (EDNetFrame   *frame);

Changes the background image with a specified frame.

The background image is used to draw images for signal loss or non-exist cameras.

void             ednet_display_init                 (void);

Initializes display module.

void             ednet_display_exit                 (void);

Finalizes display module.

int              ednet_rect_intersect               (EDNetRect    *src1,
                                                     EDNetRect    *src2,
                                                     EDNetRect    *dest);

Calculates the intersection of two rectangles. It is allowed for 'dest' to be the same as either 'src1' or 'src2'. If the rectangles do not intersect, dest's width and height is set to 0 and its x and y values are undefined. If you are only interested in whether the rectangles intersect, but not in the intersecting area itself, pass NULL for 'dest'.