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Takashi Sakamoto 4bdf4c9966 alsa-mixer: avoid assertion at alsa-lib mixer API when element removal 
PulseAudio v5.99 or later hits assertion at alsa-lib mixer API due to
wrong handling of removal event for mixer element.

pulseaudio: mixer.c:149: hctl_elem_event_handler: Assertion `bag_empty(bag)' failed.

The removal event is defined as '~0U', thus it's not distinguished from
the other type of event just by bitwise operator.

At the removal event, class implementator for mixer API should detach
mixer element from hcontrol element in callback handler since alsa-lib
has assertion to check the list of mixer elements for a hcontrol element
is empty or not after calling all of handlers. In detail, please refer to
MR to alsa-lib:

 * https://github.com/alsa-project/alsa-lib/pull/244

This commit fixes the above two issues. The issue can be regenerated by
`samples/ctl` Python 3 script of alsa-gobject.

 * https://github.com/alsa-project/alsa-gobject/

It adds some user-defined elements into sound card 0. When terminated by
SIGINT signal, it removes the elements. Then PulseAudio dies due to the
assertion.

Fixes: 1fd8848e64 ("alsa-util: Add functions for accessing mixer elements through mixer class")
Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/728>
2022-06-27 22:08:13 +03:00
.gitlab doc: Add some contributor guidelines 2021-01-04 15:30:38 +00:00
coverity build: Add Coverity scan model 2017-03-06 08:22:33 +01:00
doc card: handle sticky profile flag 2021-06-10 10:30:58 +00:00
doxygen build-sys: Fix a couple of meson warnings 2021-05-17 16:07:33 -04:00
man pacat: Include the special default device names in documentation 2022-01-26 17:13:53 +00:00
po i18n: Update .pot and .po files 2022-06-18 09:52:36 +03:00
scripts build-sys: meson: fix meson dist version 2021-03-15 18:25:06 +00:00
shell-completion build-sys: meson: Rearrange shell completion between daemon and client 2021-11-17 16:06:23 +00:00
src alsa-mixer: avoid assertion at alsa-lib mixer API when element removal 2022-06-27 22:08:13 +03:00
vala vala: Couple of libpulse binding fixes 2021-09-22 15:56:27 +00:00
.gitignore gitignore: Add install/ for local prefixed installs 2021-01-19 10:57:17 -05:00
.gitlab-ci.yml gitlab-ci: Turn on Werror for meson builds 2021-11-05 07:50:56 +00:00
.mailmap add a .mailmap file for git shortlog 2009-02-04 22:41:45 +01:00
CODE_OF_CONDUCT.md Adopt a Code of Conduct 2018-09-26 02:39:00 +00:00
CONTRIBUTING.md CONTRIBUTING.md: fix another typo 2021-07-30 13:13:46 +00:00
git-version-gen git-version-gen: Avoid further processing when tarball-version is present 2015-10-20 16:55:23 +02:00
GPL * rename "LICENSE" to "LGPL" 2006-04-20 12:33:00 +00:00
LGPL * rename "LICENSE" to "LGPL" 2006-04-20 12:33:00 +00:00
libpulse-mainloop-glib.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
libpulse-simple.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
libpulse.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
LICENSE qpaeq: change license from AGPL to LGPL v2.1 2017-09-19 21:29:44 +03:00
meson.build build-sys: meson: Make module-console-kit optional 2022-06-13 21:33:29 +00:00
meson_options.txt build-sys: meson: Make module-console-kit optional 2022-06-13 21:33:29 +00:00
NEWS Update NEWS for 16.1 2022-06-21 13:41:30 +03:00
PROTOCOL protocol-native: add message sending capability 2020-12-03 14:41:39 +00:00
pulseaudio-text.svg merge 'lennart' branch back into trunk. 2007-10-28 19:13:50 +00:00
pulseaudio.supp Add a Valgrind suppression file 2014-09-21 11:00:51 +03:00
pulseaudio.svg Add PulseAudio logo to tree. 2006-08-28 06:25:41 +00:00
PulseAudioConfig.cmake.in build-sys: Provide a simple CMake Config setup (similar to pkgconfig) 2011-10-19 23:49:23 +01:00
PulseAudioConfigVersion.cmake.in build-sys: Provide a simple CMake Config setup (similar to pkgconfig) 2011-10-19 23:49:23 +01:00
README doc: link to site documentation for IRC channels 2021-06-14 18:55:33 +03:00
todo build-sys: Stop using symdef headers for modules 2017-12-12 12:58:52 +05:30

README 

PULSEAUDIO SOUND SERVER

WEB SITE:
	http://pulseaudio.org/

GIT:
	https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git

GitLab:
	https://gitlab.freedesktop.org/pulseaudio/pulseaudio

MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss

GIT COMMITS MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-commits

TRAC/BUGZILLA TICKET CHANGES MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-bugs

IRC:
	https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Community/#ircandmatrix

FRESHMEAT:
	http://freshmeat.net/projects/pulseaudio/

OHLOH:
	http://www.ohloh.net/projects/4038

AUTHORS:
	Several

HACKING:
	In order to run pulseaudio from the build dir:
	  meson build
	  meson compile -C build
	  build/src/daemon/pulseaudio -n -F build/src/daemon/default.pa -p $(pwd)/build/src/modules/

SPELLING:
        PulseAudio