VAAPI: Don't use swfilter for large surfaces - fallback to vaapi render

This stops using of sse copy routines for large surfaces. It introduces a fallback to the swrender - cause the statemachine wants a correctly setup m_pp after that method, if we don't care for this AddPicture will segfault.

Open for more input, e.g. better error handling.
please no. I hate multiple statements on a single line. you can't debug this, impossible to set a break point on a condition.