gflAdjust

GFL SDK

previous page next page
gflAdjust

The gflAdjust function allows to adjust brightness, contrast & gamma of a picture. 

GFL_ERROR gflAdjust(
  GFL_BITMAP * src,  

  GFL_BITMAP ** dst,  

  GFL_INT32 brightness,  

  GFL_INT32 contrast,  

  double gamma
);

Parameters

    src
    Pointer to a GFL_BITMAP structure.
    dst
    Address of a pointer to a GFL_BITMAP structure.
    NULL if on the same instance.
    brightness
    An integer between -255 and 255.
    contrast
    An integer between -127 and 127.
    gamma
    A number between 0.01 and 5.

Return value

    The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.

See also

previous page start next page