for YUV420P and YUV422P always.
Fixes MPEG-2 4:2:2 encoding on PPC and ARM, and should fix mxf_d10 regression.

Originally committed as revision 18047 to svn://svn.ffmpeg.org/ffmpeg/trunk

problems with following patch to fix linesize alignment.

Originally committed as revision 18046 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18045 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18042 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18041 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18035 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18034 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18033 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18031 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18027 to svn://svn.ffmpeg.org/ffmpeg/trunk

This is needed for some HW accelerators that require a context that
FFmpeg can't instantiate itself. e.g. display-dependent data from
VA API and VDPAU.

Originally committed as revision 18025 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18021 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by John Cox, jc A kynesim D co D uk

Originally committed as revision 18020 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18015 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Daniel Verkamp daniel drv nu

Originally committed as revision 18006 to svn://svn.ffmpeg.org/ffmpeg/trunk

to it were removed in r6606

Originally committed as revision 17997 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17992 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17991 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17988 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17987 to svn://svn.ffmpeg.org/ffmpeg/trunk

complete nonsense if timecode_frame_start was used on big-endian systems.

Originally committed as revision 17986 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17984 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17978 to svn://svn.ffmpeg.org/ffmpeg/trunk

PIX_FMT_RGB565_BE -> PIX_FMT_RGB565BE
PIX_FMT_RGB565_LE -> PIX_FMT_RGB565LE
for consistency with the other pixfmts macros.

Originally committed as revision 17977 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17974 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17962 to svn://svn.ffmpeg.org/ffmpeg/trunk

'may be used uninitialized' warnings.

Originally committed as revision 17961 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17960 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Daniel Verkamp, daniel drv nu

Originally committed as revision 17954 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17949 to svn://svn.ffmpeg.org/ffmpeg/trunk

two conditions were incomplete and zeroing motion
vectors was performed only on half of them.

Originally committed as revision 17947 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17942 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17926 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17925 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17921 to svn://svn.ffmpeg.org/ffmpeg/trunk

patchset. Just a reindent.

Originally committed as revision 17917 to svn://svn.ffmpeg.org/ffmpeg/trunk

patchset. Idea is to share this common code between the AMR and QCELP
decoders.

Originally committed as revision 17916 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17899 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17881 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17880 to svn://svn.ffmpeg.org/ffmpeg/trunk