Get an RGB image.
|offset ||Offset in images buffer. Retrieve pointer to an RGB image; note that this is a pointer, not a (shallow) copy. The QImage is a 32 bit deep image.|
When buffering is active any of the previous images in the buffer can be retrieved. The 'offset' parameter indicates the negative offset in the (circular) list of images. When offset = 0 (the default) the latest image is returned; when offset = 1 is the previous image, offset = 2 the image before that, etc. up to the number of Buffers - 1.
If offset is outside the range a NULL pointer will be returned.
Definition at line 1422 of file VideoDevice.cc.
if (offset < 0 || offset >= Buffers)
return RGB.at((Buffers + CurBuffer - offset) % Buffers);