Asserion failure in test6.cpp - any up-to-date examples or tutorials?
"Gruenke,Matt" <[email protected]> Fri, 23 Dec 2016 17:40:25 +0000
| Newsgroups | gmane.comp.multimedia.matroska.devel |
|---|---|
| Message-ID | <0C37C125F1912044B8884AB509AC454905E3E031@003FCH1MPN2-052.003f.mgd2.msft.net> |
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Using libmatroska6v5 (1.4.4) on Ubuntu 16.04.1, I get the following asserti=
on failure, when running test6.cpp:
#0 0x00007ffff6fdf428 in __GI_raise (sig=3Dsig@entry=3D6) at ../sysdeps/un=
ix/sysv/linux/raise.c:54
#1 0x00007ffff6fe102a in __GI_abort () at abort.c:89
#2 0x00007ffff6fd7bd7 in __assert_fail_base (fmt=3D<optimized out>, assert=
ion=3Dassertion@entry=3D0x7ffff7baa012 "false",
file=3Dfile@entry=3D0x7ffff7bab79c "src/KaxSemantic.cpp", line=3Dline@e=
ntry=3D777,
function=3Dfunction@entry=3D0x7ffff7bac4e0 "virtual filepos_t libmatros=
ka::KaxAudioPosition::RenderData(libebml::IOCallback&, bool, bool)") at ass=
ert.c:92
#3 0x00007ffff6fd7c82 in __GI___assert_fail (assertion=3D0x7ffff7baa012 "f=
alse", file=3D0x7ffff7bab79c "src/KaxSemantic.cpp",
line=3D777,
function=3D0x7ffff7bac4e0 "virtual filepos_t libmatroska::KaxAudioPosit=
ion::RenderData(libebml::IOCallback&, bool, bool)")
at assert.c:101
#4 0x00007ffff7b98693 in libmatroska::KaxAudioPosition::RenderData(libebml=
::IOCallback&, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libmatroska.so.6
#5 0x00007ffff791ca5c in libebml::EbmlElement::Render(libebml::IOCallback&=
, bool, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libebml.so.4
#6 0x00007ffff791f336 in libebml::EbmlMaster::RenderData(libebml::IOCallba=
ck&, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libebml.so.4
#7 0x00007ffff791ca5c in libebml::EbmlElement::Render(libebml::IOCallback&=
, bool, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libebml.so.4
#8 0x00007ffff791f336 in libebml::EbmlMaster::RenderData(libebml::IOCallba=
ck&, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libebml.so.4
#9 0x00007ffff791ca5c in libebml::EbmlElement::Render(libebml::IOCallback&=
, bool, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libebml.so.4
#10 0x00007ffff791f336 in libebml::EbmlMaster::RenderData(libebml::IOCallba=
ck&, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libebml.so.4
#11 0x00007ffff791ca5c in libebml::EbmlElement::Render(libebml::IOCallback&=
, bool, bool, bool) ()
from /usr/lib/x86_64-linux-gnu/libebml.so.4
#12 0x0000000000405b76 in main (argc=3D1, argv=3D0x7fffffffe4e8) at test6.c=
pp:205
Here's the assert that's failing:
filepos_t KaxSliceBlockAddID::RenderData(IOCallback & /* output */, bool /*=
bForceRender */, bool /* bSaveDefault */) {
assert(false); // no you are not allowed to use this element !
return 0;
}
Also, I happened to notice that libav, VLC, and GStreamer all seem to be us=
ing their own EBML and matroska implementations - not libmatroska. My purp=
ose in trying to use libmatroska is to interleave timestamped video frames =
with a timestamped frames of a non-standard stream type. So, is there a be=
tter example or an up-to-date tutorial of how I might use libmatroska to th=
is end, or can someone recommend a better library for this purpose.
Thanks,
Matt
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<p class=3D"MsoNormal">Using libmatroska6v5 (1.4.4) on Ubuntu 16.04.1, I ge=
t the following assertion failure, when running test6.cpp:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">#0 0x00007ffff6fdf428 in __GI_raise (sig=3Dsig=
@entry=3D6) at ../sysdeps/unix/sysv/linux/raise.c:54<o:p></o:p></p>
<p class=3D"MsoNormal">#1 0x00007ffff6fe102a in __GI_abort () at abor=
t.c:89<o:p></o:p></p>
<p class=3D"MsoNormal">#2 0x00007ffff6fd7bd7 in __assert_fail_base (f=
mt=3D<optimized out>, assertion=3Dassertion@entry=3D0x7ffff7baa012 &q=
uot;false",
<o:p></o:p></p>
<p class=3D"MsoNormal"> file=3Dfile@entry=3D0x7ffff7=
bab79c "src/KaxSemantic.cpp", line=3Dline@entry=3D777,
<o:p></o:p></p>
<p class=3D"MsoNormal"> function=3Dfunction@entry=3D=
0x7ffff7bac4e0 "virtual filepos_t libmatroska::KaxAudioPosition::Rende=
rData(libebml::IOCallback&, bool, bool)") at assert.c:92<o:p></o:p=
></p>
<p class=3D"MsoNormal">#3 0x00007ffff6fd7c82 in __GI___assert_fail (a=
ssertion=3D0x7ffff7baa012 "false", file=3D0x7ffff7bab79c "sr=
c/KaxSemantic.cpp",
<o:p></o:p></p>
<p class=3D"MsoNormal"> line=3D777, <o:p></o:p></p>
<p class=3D"MsoNormal"> function=3D0x7ffff7bac4e0 &q=
uot;virtual filepos_t libmatroska::KaxAudioPosition::RenderData(libebml::IO=
Callback&, bool, bool)")<o:p></o:p></p>
<p class=3D"MsoNormal"> at assert.c:101<o:p></o:p></p>
<p class=3D"MsoNormal">#4 0x00007ffff7b98693 in libmatroska::KaxAudio=
Position::RenderData(libebml::IOCallback&, bool, bool) ()<o:p></o:p></p=
>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libmatro=
ska.so.6<o:p></o:p></p>
<p class=3D"MsoNormal">#5 0x00007ffff791ca5c in libebml::EbmlElement:=
:Render(libebml::IOCallback&, bool, bool, bool) ()<o:p></o:p></p>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libebml.=
so.4<o:p></o:p></p>
<p class=3D"MsoNormal">#6 0x00007ffff791f336 in libebml::EbmlMaster::=
RenderData(libebml::IOCallback&, bool, bool) ()<o:p></o:p></p>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libebml.=
so.4<o:p></o:p></p>
<p class=3D"MsoNormal">#7 0x00007ffff791ca5c in libebml::EbmlElement:=
:Render(libebml::IOCallback&, bool, bool, bool) ()<o:p></o:p></p>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libebml.=
so.4<o:p></o:p></p>
<p class=3D"MsoNormal">#8 0x00007ffff791f336 in libebml::EbmlMaster::=
RenderData(libebml::IOCallback&, bool, bool) ()<o:p></o:p></p>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libebml.=
so.4<o:p></o:p></p>
<p class=3D"MsoNormal">#9 0x00007ffff791ca5c in libebml::EbmlElement:=
:Render(libebml::IOCallback&, bool, bool, bool) ()<o:p></o:p></p>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libebml.=
so.4<o:p></o:p></p>
<p class=3D"MsoNormal">#10 0x00007ffff791f336 in libebml::EbmlMaster::Rende=
rData(libebml::IOCallback&, bool, bool) ()<o:p></o:p></p>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libebml.=
so.4<o:p></o:p></p>
<p class=3D"MsoNormal">#11 0x00007ffff791ca5c in libebml::EbmlElement::Rend=
er(libebml::IOCallback&, bool, bool, bool) ()<o:p></o:p></p>
<p class=3D"MsoNormal"> from /usr/lib/x86_64-linux-gnu/libebml.=
so.4<o:p></o:p></p>
<p class=3D"MsoNormal">#12 0x0000000000405b76 in main (argc=3D1, argv=3D0x7=
fffffffe4e8) at test6.cpp:205<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Here’s the assert that’s failing:<o:p></=
o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in">filepos_t KaxSliceBlockAd=
dID::RenderData(IOCallback & /* output */, bool /* bForceRender */, boo=
l /* bSaveDefault */) {<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"> assert(false); // =
no you are not allowed to use this element !<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"> return 0;<o:p></o:=
p></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in">}<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Also, I happened to notice that libav, VLC, and GStr=
eamer all seem to be using their own EBML and matroska implementations R=
11; not libmatroska. My purpose in trying to use libmatroska is to in=
terleave timestamped video frames with a timestamped
frames of a non-standard stream type. So, is there a better example =
or an up-to-date tutorial of how I might use libmatroska to this end, or ca=
n someone recommend a better library for this purpose.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Thanks,<o:p></o:p></p>
<p class=3D"MsoNormal">Matt<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
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