fate: add yuv4 encoding/decoding test

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

tests/codec-regression.sh

@@ -334,6 +334,11 @@ do_video_encoding yuv.avi "-an -vcodec rawvideo -pix_fmt yuv420p"
 do_video_decoding "" "-pix_fmt yuv420p"
 fi
 
+if [ -n "$do_yuv4" ] ; then
+do_video_encoding yuv4.avi "-an -c:v yuv4"
+do_video_decoding
+fi
+
 if [ -n "$do_y41p" ] ; then
 do_video_encoding y41p.avi "-an -c:v y41p"
 do_video_decoding

tests/ref/vsynth1/yuv4

+e0d593eb635432f421b93224e425ee03 *./tests/data/vsynth1/yuv4.avi
+ 7610060 ./tests/data/vsynth1/yuv4.avi
+c5ccac874dbf808e9088bc3107860042 *./tests/data/yuv4.vsynth1.out.yuv
+stddev:    0.00 PSNR:999.99 MAXDIFF:    0 bytes:  7603200/  7603200

tests/ref/vsynth2/yuv4

+3d24f1d320c4ead1efbf3c952a902379 *./tests/data/vsynth2/yuv4.avi
+ 7610060 ./tests/data/vsynth2/yuv4.avi
+dde5895817ad9d219f79a52d0bdfb001 *./tests/data/yuv4.vsynth2.out.yuv
+stddev:    0.00 PSNR:999.99 MAXDIFF:    0 bytes:  7603200/  7603200