Fix deblocking filter for field pictures by properly looking for first row in bottom fields and preventing the use of "fast" deblocking for such.
Fix deblocking filter for field pictures by properly looking for first
row in bottom fields and preventing the use of "fast" deblocking for such.



git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@10950 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg