[libdvdnav-devel] Assert(0) failure with libdvdnav 5.0.3 and "Red Dragon" DVD

[Chris Rankin]

Hi,

I've dug into this error, and as ugly as the assert() statements are, they aren't the real reason why libdvdnav is crashing. What's actually happening is that the vm->state.domain value is being changed silently from DVD_DOMAIN_VTSMenu to DVD_DOMAIN_VTSTitle. This means that the "program chain number" (I think?!) of 15 is being validated against pgcit->nr_of_pgci_srp == 1 instead of pgcit->nr_of_pgci_srp == 30. set_PGCN() then complains and the assert() fires.


So I've hacked together a quick fix (attached; against libdvdnav-5.0.3), which works for the "Red Dragon" DVD.

Cheers,
Chris
-------------- next part --------------
A non-text attachment was scrubbed...
Name: LIBDVDNAV.diff
Type: text/x-patch
Size: 604 bytes
Desc: not available
URL: <http://mailman.videolan.org/pipermail/libdvdnav-devel/attachments/20150601/3ad4ec19/attachment.bin>