fate/ffmpeg: add a test for loopback decoding

Signed-off-by: James Almer <jamrial@gmail.com>

tests/fate/ffmpeg.mak

@@ -254,3 +254,10 @@ fate-ffmpeg-streamcopy-t: CMD = ffmpeg
     -stream_loop -1 -f rawvideo -s 352x288 -pix_fmt yuv420p -i $(TARGET_PATH)/tests/data/vsynth_lena.yuv  \
     -c copy -f null -t 1 -
 FATE_FFMPEG-$(call REMUX, RAWVIDEO) += fate-ffmpeg-streamcopy-t
+
+# Test loopback decoding and passing the output to a complex graph.
+fate-ffmpeg-loopback-decoding: tests/data/vsynth_lena.yuv
+fate-ffmpeg-loopback-decoding:  CMD = transcode \
+    "rawvideo -s 352x288 -pix_fmt yuv420p" $(TARGET_PATH)/tests/data/vsynth_lena.yuv nut \
+    "-map 0:v:0 -c:v mpeg2video -f null - -flags +bitexact -dec 0:0 -filter_complex '[0:v][dec:0]hstack[stack]' -map '[stack]' -c:v ffv1" ""
+FATE_FFMPEG-$(call ENCDEC2, MPEG2VIDEO, FFV1, NUT, HSTACK_FILTER PIPE_PROTOCOL FRAMECRC_MUXER) += fate-ffmpeg-loopback-decoding

tests/ref/fate/ffmpeg-loopback-decoding

@@ -0,0 +1,57 @@
+faefe475118cacc36dff3cab59baa6cf *tests/data/fate/ffmpeg-loopback-decoding.nut
+6478832 tests/data/fate/ffmpeg-loopback-decoding.nut
+#tb 0: 1/25
+#media_type 0: video
+#codec_id 0: rawvideo
+#dimensions 0: 704x288
+#sar 0: 0/1
+0,          0,          0,        1,   304128, 0xe07dafdd
+0,          1,          1,        1,   304128, 0xc5734e5d
+0,          2,          2,        1,   304128, 0x855acdcc
+0,          3,          3,        1,   304128, 0x4ad94309
+0,          4,          4,        1,   304128, 0x174ebea3
+0,          5,          5,        1,   304128, 0xdb416da6
+0,          6,          6,        1,   304128, 0x72442b79
+0,          7,          7,        1,   304128, 0x00ddf9ed
+0,          8,          8,        1,   304128, 0xe7e7a773
+0,          9,          9,        1,   304128, 0x7df26501
+0,         10,         10,        1,   304128, 0x4f5a3eb3
+0,         11,         11,        1,   304128, 0x1ad35b6c
+0,         12,         12,        1,   304128, 0xec8e6f56
+0,         13,         13,        1,   304128, 0xb237e0ef
+0,         14,         14,        1,   304128, 0x55b26ce2
+0,         15,         15,        1,   304128, 0x22920436
+0,         16,         16,        1,   304128, 0x54eea0c0
+0,         17,         17,        1,   304128, 0x17113686
+0,         18,         18,        1,   304128, 0xeb9ae1af
+0,         19,         19,        1,   304128, 0x1ba09d4c
+0,         20,         20,        1,   304128, 0x0100748f
+0,         21,         21,        1,   304128, 0xcc914570
+0,         22,         22,        1,   304128, 0x9bc21952
+0,         23,         23,        1,   304128, 0xc118d0af
+0,         24,         24,        1,   304128, 0x7e4b2df0
+0,         25,         25,        1,   304128, 0x1078bff2
+0,         26,         26,        1,   304128, 0xeedbeda1
+0,         27,         27,        1,   304128, 0x35ac0a1b
+0,         28,         28,        1,   304128, 0x3644fb76
+0,         29,         29,        1,   304128, 0x5efa175c
+0,         30,         30,        1,   304128, 0x72c14f39
+0,         31,         31,        1,   304128, 0xd7c46bb0
+0,         32,         32,        1,   304128, 0x20f368ab
+0,         33,         33,        1,   304128, 0x9bea7ced
+0,         34,         34,        1,   304128, 0xf1b66b94
+0,         35,         35,        1,   304128, 0x3e5e6815
+0,         36,         36,        1,   304128, 0x6c2d5e3a
+0,         37,         37,        1,   304128, 0x763046b0
+0,         38,         38,        1,   304128, 0x05f71f4c
+0,         39,         39,        1,   304128, 0x3db72dff
+0,         40,         40,        1,   304128, 0x86e34c11
+0,         41,         41,        1,   304128, 0x09334889
+0,         42,         42,        1,   304128, 0xc8566851
+0,         43,         43,        1,   304128, 0x4a7ec9da
+0,         44,         44,        1,   304128, 0x609a176b
+0,         45,         45,        1,   304128, 0x98deede0
+0,         46,         46,        1,   304128, 0x59ee66a3
+0,         47,         47,        1,   304128, 0x0fc5c8c2
+0,         48,         48,        1,   304128, 0x0371d7b0
+0,         49,         49,        1,   304128, 0xd81c18cf