fate/filter-video: add frei0r test where input is realigned

An installation of frei0r-plugins is required to run the tests,
which is usually seperate from the build headers. Some systems
have it packaged (e.g. apt install frei0r-plugins). An upstream
release extracted to FREI0R_PATH also works.

The distort0r filter requires dimensions to be divisible by 8.

tests/fate/filter-video.mak

@@ -717,8 +717,9 @@ $(FATE_FILTER_VSYNTH-yes): SRC = $(TARGET_PATH)/tests/vsynth1/%02d.pgm
 
 FATE_FFMPEG += $(FATE_FILTER_VSYNTH-yes)
 
-FATE_FILTER_FREI0R-$(call FILTERFRAMECRC, TESTSRC2, FREI0R_FILTER) = fate-filter-frei0r-filter
+FATE_FILTER_FREI0R-$(call FILTERFRAMECRC, TESTSRC2, FREI0R_FILTER) = fate-filter-frei0r-filter fate-filter-frei0r-filter-unaligned
 fate-filter-frei0r-filter: CMD = framecrc -lavfi "testsrc2=r=1:d=5,frei0r=enable=gte(n\,3):filter_name=distort0r"
+fate-filter-frei0r-filter-unaligned: CMD = framecrc -lavfi "testsrc2=s=328x240:r=1:d=5,frei0r=filter_name=distort0r"
 FATE_FFMPEG += $(FATE_FILTER_FREI0R-yes)
 
 #

tests/ref/fate/filter-frei0r-filter-unaligned

@@ -0,0 +1,10 @@
+#tb 0: 1/1
+#media_type 0: video
+#codec_id 0: rawvideo
+#dimensions 0: 328x240
+#sar 0: 1/1
+0,          0,          0,        1,   314880, 0x7b9cad8f
+0,          1,          1,        1,   314880, 0x0184436f
+0,          2,          2,        1,   314880, 0x7e3f2776
+0,          3,          3,        1,   314880, 0x0dc5e915
+0,          4,          4,        1,   314880, 0xcf9c76ef