[Jack-Devel] jack2 on ARM - patch
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Hi,
jackd-1.9.10 (recent git) still crashes on ARM with a "Bus error". After brief discussion on #jack, Nedko pointed out that packed structures are still an issue. Attached patch resolves the issue. Tested working on armv7, cortex-A8 and A10 platform. Cheers! robin _______________________________________________ Jack-Devel mailing list [hidden email] http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
jack2_armel.diff (830 bytes)
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In reply to this post by Jeremy Jongepier
Jeremy Jongepier <[hidden email]> writes:
> Now add the following lines to /etc/dbus-1/system.conf: > <policy user="pi"> > <allow own="org.freedesktop.ReserveDevice1.Audio1"/> > </policy> > > This depends on the sound device you're using, it could be > different. Now remount /dev/shm: > sudo mount -o remount,size=128M /dev/shm > > And if you're on a headless RPi: > export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/dbus/system_bus_socket option for disabling it. -- Nedko Arnaudov <GnuPG KeyID: 5D1B58ED> _______________________________________________ Jack-Devel mailing list [hidden email] http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
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In reply to this post by Robin Gareus
Robin Gareus <[hidden email]> writes:
> On 01/01/2013 11:20 PM, Stéphane Letz wrote: >> And there was Basil Nutmeg proposal in july 2012 that was finally prepared on a git branch here: >> >> https://github.com/basilnut/jack2/ > > As documented in the git log messages, it breaks the ABI. AFAIK that is > a no-go. > > --- > Quotes from the commit log: > > In the current tree, with packed attributes on the relevant structs, > the only impact of this change is that the alignments of jack_unique_t > and jack_time_t are increased from 4 to 8 on 32-bit platforms, so > the layouts of structs which include them as members may be affected. > > The ABI impact relative to the tree before the packed attributes > were introduced is that the alignment of jack_position_t is increased > from 4 to 8 on 32-bit platforms. The layout of the struct itself is > unmodified, though the layouts of structs which include it as a > member may be affected. > > jack_latency_range_t and jack_position_t are no longer packed. The > layouts of these structs themselves are unmodified, though the layouts > of any structs which include these structs as members may be affected. is much more worrisome. -- Nedko Arnaudov <GnuPG KeyID: 5D1B58ED> _______________________________________________ Jack-Devel mailing list [hidden email] http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
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In reply to this post by Robin Gareus
Robin Gareus <[hidden email]> writes:
> On 01/02/2013 12:49 PM, Nedko Arnaudov wrote: >> Jeremy Jongepier <[hidden email]> writes: >> >>> Now add the following lines to /etc/dbus-1/system.conf: >>> <policy user="pi"> >>> <allow own="org.freedesktop.ReserveDevice1.Audio1"/> >>> </policy> >>> >>> This depends on the sound device you're using, it could be >>> different. Now remount /dev/shm: >>> sudo mount -o remount,size=128M /dev/shm >>> >>> And if you're on a headless RPi: >>> export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/dbus/system_bus_socket >> >> Is the device reservation code useful on RPi? We could have a configure >> option for disabling it. > > There is a `waf configure` option: just don't use --dbus and it works > fine without this /trick/. A runtime option would be great. > > ie. `waf configure with --classic --dbus ...` - but having an option > that the resulting `jackd` would skip device reservation. code. Runtime option is ok. -- Nedko Arnaudov <GnuPG KeyID: 5D1B58ED> _______________________________________________ Jack-Devel mailing list [hidden email] http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
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