It allows VLD H264 decoding using DXVA2 (GPU assisted decoding API under
VISTA and Windows 7).
It is implemented by using AVHWAccel API. It has been tested successfully
for some time in VLC using an nvidia card on Windows 7.
To compile it, you need to have the system header dxva2api.h (either from
microsoft or using http://downloads.videolan.org/pub/videolan/testing/contrib/dxva2api.h)
The generated libavcodec.dll does not depend directly on any new lib as
the necessary objects are given by the application using FFmpeg.
Originally committed as revision 21353 to svn://svn.ffmpeg.org/ffmpeg/trunk
in libavcodec/imgconvert.c.
Avoid to break compatility when making the functions dealing with
pixel format names in imgconvert.c use the names defined in pixdescs.
Originally committed as revision 20624 to svn://svn.ffmpeg.org/ffmpeg/trunk
This way pixdescs can be used without requiring a dependency on
libavcodec.
Originally committed as revision 20389 to svn://svn.ffmpeg.org/ffmpeg/trunk
