camGetInfo (Functionblock)

This functionblock returns information about a connected USB camera.

Input:

None.

Output:

status        : INT

The status of the camera:

max_width        : INT

The maximum width of the camera.

max_height        : INT

The maximum height of the camera.

format                : DINT

The ID of the image format of the camera. If the camera supports multiple formats, the format with best support will be shown.

Known formats:

Declaration:

FUNCTION_BLOCK camGetInfo;
VAR_OUTPUT
   status     : INT;
   max_width  : INT;
   max_height : INT;
   format     : DINT;
END_VAR;

Example:

INCLUDE rtcu.inc
 
VAR
   camInfo  : camGetInfo;
END_VAR;
 
PROGRAM test;
 
   // Open the camera library
   camOpen();
 
BEGIN
    ...
    // Get information about the camera module
    camInfo();
    IF camInfo.status > 0 THEN
        DebugFmt(message := "Max resolution: \1 x \2, format \4", v1 := camInfo.max_width, 
                                          v2:=camInfo.max_height, v2:=camInfo.format);
    END_IF;
    ...
END;
END_PROGRAM;