fate: add fieldorder filter test

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

tests/fate/filter-video.mak

@@ -21,6 +21,9 @@ fate-filter-drawbox: CMD = framecrc -c:v pgmyuv -i $(SRC) -vf drawbox=10:20:200:
 FATE_FILTER_VSYNTH-$(CONFIG_FADE_FILTER) += fate-filter-fade
 fate-filter-fade: CMD = framecrc -c:v pgmyuv -i $(SRC) -vf fade=in:0:25,fade=out:25:25
 
+FATE_FILTER_VSYNTH-$(call ALLYES, INTERLACE_FILTER FIELDORDER_FILTER) += fate-filter-fieldorder
+fate-filter-fieldorder: CMD = framecrc -c:v pgmyuv -i $(SRC) -vf interlace=tff,fieldorder=bff
+
 FATE_FILTER_VSYNTH-$(CONFIG_GRADFUN_FILTER) += fate-filter-gradfun
 fate-filter-gradfun: CMD = framecrc -c:v pgmyuv -i $(SRC) -vf gradfun
 

tests/ref/fate/filter-fieldorder

@@ -0,0 +1,26 @@
+#tb 0: 2/25
+0,          0,          0,        1,   202752, 0x136ad937
+0,          1,          1,        1,   202752, 0xd8500359
+0,          2,          2,        1,   202752, 0xe7784d3b
+0,          3,          3,        1,   202752, 0x49b2f58e
+0,          4,          4,        1,   202752, 0x12548c8e
+0,          5,          5,        1,   202752, 0x244f500e
+0,          6,          6,        1,   202752, 0x98c5506e
+0,          7,          7,        1,   202752, 0xe7131398
+0,          8,          8,        1,   202752, 0xc0e7c1ec
+0,          9,          9,        1,   202752, 0x0113d766
+0,         10,         10,        1,   202752, 0x8439cc42
+0,         11,         11,        1,   202752, 0x8db397b9
+0,         12,         12,        1,   202752, 0x7648eb88
+0,         13,         13,        1,   202752, 0xe6a513b3
+0,         14,         14,        1,   202752, 0x3c6f3b29
+0,         15,         15,        1,   202752, 0x5e4f3ef1
+0,         16,         16,        1,   202752, 0x261e0778
+0,         17,         17,        1,   202752, 0xb2ce0274
+0,         18,         18,        1,   202752, 0x849d7746
+0,         19,         19,        1,   202752, 0xadf7b1b1
+0,         20,         20,        1,   202752, 0xc4041125
+0,         21,         21,        1,   202752, 0x78e4cce8
+0,         22,         22,        1,   202752, 0x2f306542
+0,         23,         23,        1,   202752, 0x4b4bebc6
+0,         24,         24,        1,   202752, 0xb9bfbb17