Test WebMIDI fails #4
Comments
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To support Web MIDI API, you can install another extension: https://github.com/jazz-soft/web-midi |
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Thank you! I missed that one. Does it mean I need to install two addons and the jazz-midi node package? |
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Yes, that is correct, but you already have most of these installed. |
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Thank you! |
thirtythreeforty
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Oct 10, 2023
The pthread and lock are never created if the "if" in the constructor
fails, and the members are never initialized. But the destructor
unconditionally destroys them. Fix this by adding a guard flag.
This fixes a segfault I encountered on Arch with Pipewire as the ALSA
server.
Thread 1 "node" received signal SIGSEGV, Segmentation fault.
0x00007ffff428aebd in pthread_cancel () from /usr/bin/../lib/libc.so.6
(gdb) bt
#0 0x00007ffff428aebd in pthread_cancel () from /usr/bin/../lib/libc.so.6
jazz-soft#1 0x00007ffff3b773ff in CMidiInHW::~CMidiInHW (this=0x55555572a430, __in_chrg=<optimized out>) at ../../midi/MidiALSA.cpp:366
jazz-soft#2 0x00007ffff3b77452 in CMidiInHW::~CMidiInHW (this=0x55555572a430, __in_chrg=<optimized out>) at ../../midi/MidiALSA.cpp:369
jazz-soft#3 0x00007ffff3b77105 in CMidiALSA::MidiInOpen[abi:cxx11](wchar_t const*, void*) (this=0x5555557b9880, name=0x5555556b3cf0 L"input", p=0x55555579e3a0) at ../../midi/MidiALSA.cpp:329
jazz-soft#4 0x00007ffff3b6f0c8 in MidiInOpen (env=0x55555579e410, args=0x7fffffff9e20) at ../jazz-midi.cpp:461
jazz-soft#5 0x00007ffff535bd33 in ?? () from /usr/bin/../lib/libnode.so.115
jazz-soft#6 0x00007ffff5840d97 in ?? () from /usr/bin/../lib/libnode.so.115
jazz-soft#7 0x00007ffff5841942 in v8::internal::Builtin_HandleApiCall(int, unsigned long*, v8::internal::Isolate*) () from /usr/bin/../lib/libnode.so.115
jazz-soft#8 0x00007ffff56cadf6 in ?? () from /usr/bin/../lib/libnode.so.115
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I have installed both the Firefox extension and the jazz-midi node packag. When I browse this page I can see the midi icon on the Firefox URL bar and I can playing with the keyboard logo makes sound.
However the test page https://webmidi.info/ reports
✘ Your browser does not support WebMIDI.and most of the MIDI-compatible web app I test don’t work, because they assume the browse doesn’t support webMIDI.Did I miss something?
Tested with OS: linux (debian + XFCE), and Firefox 89
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