tests: add filter-pixfmts-rotate test

tests/fate/filter-video.mak

@@ -236,6 +236,9 @@ fate-filter-pixfmts-null:  CMD = pixfmts
 FATE_FILTER_PIXFMTS-$(CONFIG_PAD_FILTER) += fate-filter-pixfmts-pad
 fate-filter-pixfmts-pad:   CMD = pixfmts "500:400:20:20"
 
+FATE_FILTER_PIXFMTS-$(CONFIG_ROTATE_FILTER) += fate-filter-pixfmts-rotate
+fate-filter-pixfmts-rotate: CMD = pixfmts "2*PI*n/50"
+
 FATE_FILTER_PIXFMTS-$(CONFIG_SCALE_FILTER) += fate-filter-pixfmts-scale
 fate-filter-pixfmts-scale: CMD = pixfmts "200:100"
 

tests/ref/fate/filter-pixfmts-rotate

@@ -0,0 +1,13 @@
+abgr                24f441d2e6e67cae2d3451aa1dad23a7
+argb                993002f41f621d04cd76278e466c03eb
+bgr24               d0f449e8b38e07c947bd808f441a8ace
+bgra                54cebf01881cb63ec3727f7cc23b0a6b
+gray                d58ee8dc3476a30debbddc65e1038d69
+rgb24               739f0eb47e76ce5c87354d5631ac2d5b
+rgba                f25570a798f24e8174729d978872c272
+yuv420p             afed4567a1b2d54ca9bc87bbdfff9a34
+yuv444p             df57aba68928092b54f6b75ab01e3110
+yuva420p            ad9bdb4f21855550a6f94e2d96588097
+yuva444p            b6a345f46ef75814033f733ccb4da42e
+yuvj420p            ccc0724c2ff91daa3848db1f4d91d010
+yuvj444p            9165b6e7c647c93cd24011d931890edb