regtests: add grayscale qtrle

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

tests/codec-regression.sh

@@ -263,6 +263,11 @@ do_video_encoding qtrle.mov "-an -vcodec qtrle"
 do_video_decoding "" "-pix_fmt yuv420p"
 fi
 
+if [ -n "$do_qtrlegray" ] ; then
+do_video_encoding qtrlegray.mov "-an -vcodec qtrle -pix_fmt gray"
+do_video_decoding "" "-pix_fmt yuv420p"
+fi
+
 if [ -n "$do_rgb" ] ; then
 do_video_encoding rgb.avi "-an -vcodec rawvideo -pix_fmt bgr24"
 do_video_decoding "" "-pix_fmt yuv420p"

tests/ref/vsynth1/qtrlegray

+0544350c00f33f21e29b5edd965c3f03 *./tests/data/vsynth1/qtrlegray.mov
+5113428 ./tests/data/vsynth1/qtrlegray.mov
+29def4aed035ed65d3a89f7d382fccbe *./tests/data/qtrlegray.vsynth1.out.yuv
+stddev:   25.95 PSNR: 19.85 MAXDIFF:  122 bytes:  7603200/  7603200

tests/ref/vsynth2/qtrlegray

+55c6e5af44ece0621d1d4c91b282a544 *./tests/data/vsynth2/qtrlegray.mov
+5111417 ./tests/data/vsynth2/qtrlegray.mov
+f63b5ebdfdba750e547c25131b0a3fd1 *./tests/data/qtrlegray.vsynth2.out.yuv
+stddev:   19.42 PSNR: 22.36 MAXDIFF:   72 bytes:  7603200/  7603200