Colin Guthrie [Thu, 25 Nov 2010 21:40:25 +0000 (21:40 +0000)]
alsactl: Add a --with-udev-rules-dir configure option.
After the previous patch to install udev rules it is impossible to do a
non-root, custom-prefix make install. This is generally not a problem
when building official packages but it can be a pain for developers
and debuggers etc.
Ozan Çağlayan [Thu, 25 Nov 2010 07:36:37 +0000 (09:36 +0200)]
configure.in: Fix variable name
Fix variable name for --with-asound-state-dir as currently we have
to pass --with-ASOUND_STATE_DIR= which is wrong and inconsistent with
the other switches.
alsactl: Move asound.state location to /var/lib/alsa
.... and add configure switch for it.
/etc might be on a read-only partition which is not suitable for dynamic
data such as the mixer settings. Hence move the location of asound.state
to /var/lib.
This is based on a patch from Ubuntu/Debian which hardcoded the pah in
/var/lib.
Signed-off-by: Lennart Poettering <mznyfn@0pointer.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Add minimal systemd and udev support to alsactl so that mixer settings
are restored at boot, when sound cards are plugged in and saved on
shutdown.
This is similar to existing udev/init script solutions in various
distributions.
Note that alsactl is called both synchronously from the udev rules as
well as asynchronously at boot. This is intended, and to ensure two
things:
- At boot the asound.state file might not be readable, since it resides
on a different file system. That means exclusively restoring sound card
settings from udev rules will no suffice, since if the rule is
executed at early boot (for example within udev settle) then the file
will no be readable and cannot be restored.
- We need to ensure that applications monitoring sound cards coming and
going (such as PA) must not get these events before the mixer settings
have been restored. That means the mixer settings must be restored
synchronously withing the udev rules, before the events are passed on
to the apps.
That basically means we need to restore the settings once in udev, to
deal with sound cards becoming available during runtime. And once in
early boot to deal with coldplugged soundcards whose data files might
not have been available at time of plugging. Hence we call alsactl
twice: one from the udev rule, and once from he systemd unit file.
Signed-off-by: Lennart Poettering <mznyfn@0pointer.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jaroslav Kysela [Mon, 11 Oct 2010 08:24:14 +0000 (10:24 +0200)]
alsaloop: Fixes and added --workaround option
- added workaround for alsa-lib (pthread configuration parsing issue) -
the workaround must be activated manually using ('--workaround serialopen')
- fixed avail_min initialization (caused high CPU usage or xruns)
- fixed shared buffer initialization (both capture and playback buffers
must have equal number of samples in this config)
Jaroslav Kysela [Wed, 18 Aug 2010 06:29:03 +0000 (08:29 +0200)]
Introduce alsaloop utility
alsaloop allows create a PCM loopback between a PCM capture device
and a PCM playback device.
alsaloop supports multiple soundcards, adaptive clock synchronization,
adaptive rate resampling using the samplerate library (if available in
the system). Also, mixer controls can be redirected from one card to
another (for example Master and PCM).
Clemens Ladisch [Wed, 26 May 2010 08:27:25 +0000 (10:27 +0200)]
alsactl: correctly restore dB values of controls with changed range
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>
Clemens Ladisch [Wed, 26 May 2010 08:18:43 +0000 (10:18 +0200)]
alsactl: move alloca out of loop
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>
Clemens Ladisch [Mon, 22 Feb 2010 08:42:03 +0000 (09:42 +0100)]
alsamixer: handle out-of-range volume values
Ensure that control volume values are in their allowed range; otherwise,
the displayed values could be outside the range 0..100 and mess up the
layout.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Clemens Ladisch [Fri, 19 Feb 2010 16:07:20 +0000 (17:07 +0100)]
alsamixer: fix division by zero
The attempt to divide by max-min fails if a control has only one valid
value. In this case, adjust the maximum so that the computation can
succeed; the control will look like 0%.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
John Sauter [Fri, 8 Jan 2010 21:24:33 +0000 (16:24 -0500)]
aplay -- add features for audio surveilance
Add signal SIGUSR1 to turn over the output file,
--max-file-time to cause the output file to turn over automatically,
and --use-strftime to create output files based on the current time.
Signed-off-by: John Sauter <John_Sauter@systemeyescomputerstore.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Clemens Ladisch [Thu, 28 May 2009 07:16:11 +0000 (09:16 +0200)]
alsamixer: fix text box clipping with multi-column characters
When a multi-column character would straddle the left window border of
a text box, we have to take the inserted space character into account
when we compute how many characters fit into the rest of the line.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Dan McGee [Sun, 10 May 2009 00:47:40 +0000 (02:47 +0200)]
speaker-test: only check byte order once
Rather than having numerous preprocessor directives scattered in the code
checking __BYTE_ORDER, only check it once and define a set of macros
accordingly that can be used in the rest of the code. This makes things
simpler to read and less error-prone.
Dan McGee [Sun, 10 May 2009 00:27:05 +0000 (02:27 +0200)]
speaker-test: allow frequency to be floating point
Use atof() rather than atoi() to store the frequency- we were already using
a floating point value internally but did not let the user specify one from
the command line.
Jaroslav Kysela [Thu, 30 Apr 2009 09:26:15 +0000 (11:26 +0200)]
alsactl: fix sysfsroot path and parser extensions
The sysfsroot path is /sys/class/sound/cardX/device for recent kernels.
The ACCESS check honors the variable substutition now. Added $config{key}
substitution.
git://git.alsa-project.org / alsa-utils.git / log