0002930: Hang when rendering subtitles on Windows - MantisBT

ID	Project	Category	View Status	Date Submitted	Last Update

0002930	DCP-o-matic	Bugs	public	2025-01-08 21:08	2025-01-09 18:12

Reporter	carl	Assigned To	carl
Priority	immediate	Severity	block	Reproducibility	sometimes
Status	resolved	Resolution	fixed
Platform	64-bit	OS	Windows	OS Version	10
Product Version	2.18.2
Target Version	2.18.3

Summary	0002930: Hang when rendering subtitles on Windows
Description	Thread 14 (Thread 14880.0x1244): #0 0x00007ff86002d574 in ntdll!ZwWaitForSingleObject () from C:\Windows\SYSTEM32\ntdll.dll 0000001 0x00007ff85dcd920e in WaitForSingleObjectEx () from C:\Windows\System32\KernelBase.dll 0000002 0x00007ff854d52edf in ?? () from C:\Program Files\DCP-o-matic 2\bin\libwinpthread-1.dll 0000003 0x00007ff854d547a9 in ?? () from C:\Program Files\DCP-o-matic 2\bin\libwinpthread-1.dll 0000004 0x00007ff854d5636f in ?? () from C:\Program Files\DCP-o-matic 2\bin\libwinpthread-1.dll 0000005 0x00007fffb5495203 in g_system_thread_new () from C:\Program Files\DCP-o-matic 2\bin\libglib-2.0-0.dll 0000006 0x00007fffb545b7cf in g_thread_new () from C:\Program Files\DCP-o-matic 2\bin\libglib-2.0-0.dll 0000007 0x00007fffafc175df in pango_fc_font_map_load_fontset () from C:\Program Files\DCP-o-matic 2\bin\libpangoft2-1.0-0.dll 0000008 0x00007fffb42f0948 in pango_itemize_with_font.part () from C:\Program Files\DCP-o-matic 2\bin\libpango-1.0-0.dll 0000009 0x00007fffb43030ec in pango_layout_check_lines.part () from C:\Program Files\DCP-o-matic 2\bin\libpango-1.0-0.dll 0000010 0x00007fffb4306a67 in pango_layout_get_extents_internal () from C:\Program Files\DCP-o-matic 2\bin\libpango-1.0-0.dll 0000011 0x00007ff80f2387b9 in Pango::Layout::get_ink_extents() const () from C:\Program Files\DCP-o-matic 2\bin\libpangomm-1.4-1.dll 0000012 0x00007fffbab599a4 in setup_layout(std::vector<StringText, std::allocator<StringText> >, dcp::Size, dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>, int) [clone .isra.0] () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000013 0x00007fffbab5a32c in render_line(std::vector<StringText, std::allocator<StringText> >, dcp::Size, dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>, int) () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000014 0x00007fffbab5b4cd in render_text(std::vector<StringText, std::allocator<StringText> >, dcp::Size, dcpomatic::Time<d--Type <RET> for more, q to quit, c to continue without paging-- cpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>, int) () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000015 0x00007fffbab21dbe in Player::open_texts_for_frame(dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>) const () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000016 0x00007fffbab278f7 in Player::emit_video(std::shared_ptr<PlayerVideo>, dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>) () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000017 0x00007fffbab27bb9 in Player::emit_video_until(dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>)::{lambda(std::shared_ptr<PlayerVideo>, dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>)0000001}::operator()(std::shared_ptr<PlayerVideo>, dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>) const () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000018 0x00007fffbab281f1 in Player::emit_video_until(dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>) () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000019 0x00007fffbab28809 in Player::use_video(std::shared_ptr<PlayerVideo>, dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>, dcpomatic::Time<dcpomatic::DCPTimeDifferentiator, dcpomatic::ContentTimeDifferentiator>) () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000020 0x00007fffbab28f2d in Player::video(std::weak_ptr<Piece>, ContentVideo) () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000021 0x00007fffbac5c0aa in boost::detail::function::void_function_obj_invoker1<boost::_bi::bind_t<void, boost::_mfi::mf2<void, Player, std::weak_ptr<Piece>, ContentVideo>, boost::_bi::list3<boost::_bi::value<Player*>, boost::_bi::value<std::weak_ptr<Piece> >, boost::arg<1> > >, void, ContentVideo>::invoke(boost::detail::function::function_buffer&, ContentVideo) () from C:\Program Files\DCP-o-matic 2\bin\dcpomatic2.dll 0000022 0x00007fffbac68a9a in boost::signals2::detail::signal_impl<void (ContentVideo), boost::signals2:
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carl 2025-01-09 01:24 administrator ~0006728	I can't see the hang any more when built with Pango 1.51.2 instead of 1.51.0. Sent to Markus to test.

carl 2025-01-09 18:12 administrator ~0006731	Believed fix by the bump to Pango 1.51.2 in mxe 42856be1114896843e1161f8c1c9a1d1fe86921b infrastructure 54371a0996bf51616b50436acb481502e2d71ea8

Date Modified	Username	Field	Change
2025-01-08 21:08	carl	New Bug
2025-01-08 21:09	carl	Assigned To	=> carl
2025-01-08 21:09	carl	Status	new => confirmed
2025-01-09 01:24	carl	Note Added: 0006728
2025-01-09 18:12	carl	Note Added: 0006731
2025-01-09 18:12	carl	Status	confirmed => resolved
2025-01-09 18:12	carl	Resolution	open => fixed