One bit fields should probably be unsigned. Unfortunately, it is left up to the compiler on how one bit fields are treated. gcc treats one bit fields as signed and allows for the 
-funsigned-field parameter. Other compilers (like Sun C) treat one bit fields as unsigned no matter what.
Patch by Erik Hovland erik hovland org


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@14131 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b