This moves all VP3-specific function pointers from dsputil to a
new vp3dsp context.  There is no reason to ever use the VP3 IDCT
where an MPEG2 IDCT is expected or vice versa.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This creates proper position independent code when accessing
data symbols if CONFIG_PIC is set.

References to external symbols should now use the movrelx macro.
Some additional code changes are required since this macro may
need a register to hold the GOT pointer.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This will allow for easier implementation of ARM-optimized functions in
libraries other than libavcodec.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Originally committed as revision 23359 to svn://svn.ffmpeg.org/ffmpeg/trunk

2-4% faster overall decode

Originally committed as revision 22896 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22404 to svn://svn.ffmpeg.org/ffmpeg/trunk

15% faster VP3/Theora, 10% faster VP6

Originally committed as revision 19345 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18917 to svn://svn.ffmpeg.org/ffmpeg/trunk