For UCM, card-specific config files should be removed only when the fixed
boot flag is set or if the card is not the primary card in a given card
group.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The card specific configuration files created at runtime must
be removed before UCM fixed boot sequence in the standard
restore operation.
Fixes: https://github.com/alsa-project/alsa-lib/issues/492
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
When the primary card restores controls, all other cards
in the card group should do this operation, too.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Track user control elements separately and adjust control
count difference checking to account for dynamic user elements.
Prevents false positives in re-init detection when only user
controls have changed.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Implement wait.c with wait_for_card() function to monitor Boot control
element and wait for card readiness using event-based polling.
Add "wrestore" command to wait for card ready state before restore.
Add FLAG_UCM_WAIT flag and move DEFAULT_SYNC_TIME to alsactl.h.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Add export.c with support for exporting card states as key=value pairs.
Exports ALSA_CARD_NUMBER/ALSA_CARD_STATE for single cards, or
ALSA_CARD#_STATE for multiple cards. States: active, skip, waiting.
Add -Y (--export) option to restore command for state export.
This feature is designed for udev IMPORT{program} use.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Implement boot parameter management for multi-card synchronization.
Add boot_params.c with read/write functions for Boot control element,
card group configuration file support, and validity checking.
Extend init_ucm.c with boot/restore logic and card state handling.
Add -G (group-file) and -m (force-ucm-restore) command line options.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Introduce the -K,--lock-dir parameter to specify the locking
directory. If the locking is active, files card<NUM>.lock
are used to serialize the multiple initialization requests
(udev, service).
Allow the relative -O,--lock-file argument (it's default now).
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The driver may export only write-only elements. The previous
heuristics code do not handle this use case correctly.
Iterate through all elements and skip the write-only ones.
Fixes: https://github.com/alsa-project/alsa-utils/issues/122
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
If load_configuration fails with open_failed == true, load_state will
jump to the out label without config being initialized and pass this
uninitialized config value to snd_config_delete. This commit fixes this
issue by initializing config with NULL and checking if it is non-null
before invoking snd_config_delete.
Fixes: https://github.com/alsa-project/alsa-utils/pull/94
Fixes: f138117 ("alsactl: load_state() - initialize config variable for the open_failed case")
BugLink: https://github.com/alsa-project/alsa-utils/issues/93
Signed-off-by: Sören Tempel <soeren+git@soeren-tempel.net>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The /var/lib/alsa/card<NUMBER>.conf.d directories should be emptied
when the card is initialized. Implement this functionality directly
to alsactl.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Take the card iterator idea from the monitor code and
use it for all card loops. It reduces the code duplications
and makes things easy to review.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The `L` length modifier only applies to floating-point conversion
specifiers, and `ll` is used for `long long` integers.
Although glibc accepts %Li, musl does not and returns EINVAL.
Signed-off-by: Michael Forney <mforney@mforney.org>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
For the plug-and-play hardware, like USB devices, it may be helpful
to manage the sound state periodically, before the devices are removed.
This change implements new commands 'daemon' and 'rdaemon' to save
the sound state in defined intervals when the sound controls are changed.
The udev rules can notify the daemon using the 'kill' or 'nrestore'
commands to rescan available cards in the system.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
- store new configuration to file + ".new" extension, rename later
- free the configuration tree on exit from load_state()/save_state()
- call snd_config_update_free_global() at the end of command blocks
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
When the global state does not exist, alsactl tries to
initialize all soundcards. It is not good when alsactl
is called multiple times from udev. Also, selinux can deny
access to non-existent devices.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The inactive controls are stored, but they are not restored
when they are marked inactive in the state file or in the
driver.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Make the comment node a separate node in the state file (join=0), and
move it after the other fields of the respective control.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
When the range of a control has changed between driver versions, it is a
good idea to restore the same dB value of the control. However,
computing the dB value by interpolating betweem the min/max dB values
duplicates alsa-lib's TLV functions and does not even work for controls
with a linear dB range.
A simple conversion to dB and back can be done if we add the dB value(s)
to the saved state.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Reserving new space from the stack in every loop iteration is not
necessary, so move the call to snd_ctl_elem_id_alloca outside where it
is executed only once.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
To save a call to snd_config_set_xxx, replace the calls to
snd_config_make_xxx with snd_config_imake_xxx.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Also, make the initialization & restore logic for one card similar to
multiple card initialization & restore.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Fix check when driver contains more controls than state file. In this case,
initialization procedure should be run, too.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This way the compiler can assume more information about their
interface for optimisation.
Signed-off-by: Diego E. 'Flameeyes' Pettenò <flameeyes@gmail.com>
The initialization procedure consist from default initialization and
state restoration. When restore fails for a reason or the config file
contains inaccurate information, then init is called.
Also, if something fails (init or restore), a file specified using -r
option can be created with description what failed. It can be useful
when user space decides to notify user to set the sound driver properly.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
