#10824: swscale self tests fail with assertion since recent changes
-------------------------------------+-------------------------------------
Reporter: Michael | Owner: (none)
Niedermayer |
Type: defect | Status: open
Priority: important | Component: swscale
Version: git-master | Resolution:
Keywords: assert, | Blocked By:
regression |
Blocking: 7.0 | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by Michael Niedermayer):
Replying to [comment:10 Niklas Haas]:
> Michael, the change in behavior is caused by "swscale: don't assign
range converters for float" in isolation. That patch is orthogonal to the
bug fix for this issue, which is in these patches:
>
> swscale/utils: correctly return from sws_init_single_context
> and
> swscale/utils: don't early return in yuv alpha blendaway
>
>
> So we can merge those two to fix 7.0 without causing the change in
behavior you observed.
these 2 patches cause the code to segfault
gray -> grayf32le
gray 96x96 -> grayf32le 64x 64 flags= 1 CRC=78e674b6 SSD= 0, 0,
0, 0
gray 96x96 -> grayf32le 64x 96 flags= 1 CRC=e797f06f SSD= 0, 0,
0, 0
gray 96x96 -> grayf32le 64x128 flags= 1 CRC=02c0a369 SSD= 0, 0,
0, 0
gray 96x96 -> grayf32le 96x 64 flags= 1 CRC=de03cdea SSD= 0, 0,
0, 0
gray 96x96 -> grayf32le 96x 96 flags= 1
Program received signal SIGSEGV, Segmentation fault.
0x000055555556d3eb in ff_init_vscale_pfn (c=0x55555588e580,
yuv2plane1=0x0, yuv2planeX=0x0, yuv2nv12cX=0x0, yuv2packed1=0x0,
yuv2packed2=0x0, yuv2packedX=0x0, yuv2anyX=0x0, use_mmx=0) at
libswscale/vscale.c:285
285 lumCtx = c->desc[idx].instance;
(gdb) bt
#0 0x000055555556d3eb in ff_init_vscale_pfn (c=0x55555588e580,
yuv2plane1=0x0, yuv2planeX=0x0, yuv2nv12cX=0x0, yuv2packed1=0x0,
yuv2packed2=0x0, yuv2packedX=0x0, yuv2anyX=0x0, use_mmx=0) at
libswscale/vscale.c:285
#1 0x000055555555f5e6 in swscale (c=0x55555588e580, src=0x7fffffffdd00,
srcStride=0x7fffffffdce0, srcSliceY=0, srcSliceH=96, dst=0x7fffffffdd20,
dstStride=0x7fffffffdcf0, dstSliceY=0, dstSliceH=96) at
libswscale/swscale.c:355
#2 0x0000555555562332 in scale_internal (c=0x55555588e580,
srcSlice=0x55555584e0e0 <src>, srcStride=0x55555584e0c0 <srcStride.5551>,
srcSliceY=0, srcSliceH=96, dstSlice=0x7fffffffde20,
dstStride=0x7fffffffde10, dstSliceY=0, dstSliceH=96) at
libswscale/swscale.c:1046
#3 0x0000555555562aca in sws_scale (c=0x55555588e580,
srcSlice=0x55555584e0e0 <src>, srcStride=0x55555584e0c0 <srcStride.5551>,
srcSliceY=0, srcSliceH=96, dst=0x7fffffffde20, dstStride=0x7fffffffde10)
at libswscale/swscale.c:1213
#4 0x000055555555cef9 in doTest.constprop.2 ()
#5 0x000055555555db65 in main ()
git log --oneline -2
75a1ccaaadf (HEAD) swscale/utils: don't early return in yuv alpha
blendaway
73a54cdb697 swscale/utils: correctly return from sws_init_single_context
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10824#comment:14>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-trac
To unsubscribe, visit link above, or email
ffmpeg-trac-requ...@ffmpeg.org with subject "unsubscribe".
