v4l2videodec: Implement a minimal jpeg parser
Submitted by Nicolas Dufresne @ndufresne
Link to original bug (#766076)
Description
Until https://bugzilla.gnome.org/show_bug.cgi?id=626531 get addressed, it is required that all jpeg decoder can at least split the jpeg data into single frame. For this reason, v4l2videodec need to implement parsing when jpeg is selected.