It's completely normal to not have explicit channel configuration for
stereo devices. In fact, the ALSA developers actively avoid configuring
the channels for stereo devices.
I also dropped the word "duplex" from the messages, because "stereo
duplex" implies bidirectionality, but most devices use one direction
only.
The ALSA mixer can be opened multiple times (especially for UCM
in the probe). This adds a simple mixer cache to prevent
multiple open calls.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This is just invalid. It results to an error in almost all cases.
The hw:<number> scheme is sufficient to get the right card mixer.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Remove the implicit rule. It is perfectly ok to have the jack with
the same name for another I/O in the driver. Trust only the
value obtained from UCM.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The UCM library is used to get the fallback values from the verbs
and the defaults section. There is no reason to duplicate this code
inside application.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Hardwares without SNDRV_PCM_INFO_RESUME capability, like USB Audio,
don't support snd_pcm_resume() when it's in suspended state.
Let's use snd_pcm_hw_params_can_resume() to check hardware's capability
before snd_pcm_resume() attempt. If it doesn't support resume, just go
to snd_pcm_drop() to leave suspended state directly.
The mixer identifiers should be used for snd_mixer_selem API.
Use them as first, then try to fallback to the raw control
identifiers.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
- sync mixer logic added
- mixer path creation, empty set in mapping creation, paths added in path creation
- path creation moved inside new port creation as it might be called twice otherwise
- some comments added
This allows us to support the PlaybackVolume and CaptureVolume commands
in UCM, specifying a mixer control to use for hardware volume control.
This only works with ports corresponding to single devices at the
moment, and doesn't support stacking controls for combination ports.
The configuration is intended to provide a control (like Headphone
Playback Volume), but we try to resolve to a simple mixer control
(Headphone) to reuse existing volume paths.
On the UCM side, this also requires that when disabling the device for
the port, the volume should be reset to some default.
When enabling/disabling combination devices, things are a bit iffy since
we have no way to reset the volume before switching to a combination
device. It would be nice to have a combination-transition-sequence
command in UCM to handle this and other similar cases.
PlaybackSwitch and CaptureSwitch are yet to be implemented.
It is possible that we might want to have a separate userdata to be used
for these callbacks, so let's split them out.
This is particularly needed when using an pa_rtpoll_item around pa_fdsem
since that uses its own before/after callback but will essentially have
whatever is using the fdsem set up the work callback appropriately (and
thus at least the work callback's userdata needs to be separated from
the before/after callback -- we might as well then just separate all
three).
Signed-off-by: Arun Raghavan <arun@arunraghavan.net>
This was being done automatically by autotools, now we need to manually
specify this for each executable/library with a dependency in a
non-standard directory.
Brings things in line with the autotools build, and adds ALSA mixer
paths and profile-sets into the meson build system as well.
The module installation path is also now customisable.
The recent change in ALSA upstream stripped -I$include/alsa path from
pkgconfig. We already fixed for this change in some places but still
the code for UCM was overlooked, and this resulted in the unresolved
symbols in alsa card module. Fix them as well.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Consumers are expected to use <alsa/asoundlib.h> instead of
<asoundlib.h>.
This is in preparation of an change to pkgconfig(alsa) to
not pollute CFLAGS with -I/usr/include/alsa anymore.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Currently, when a system is waking up from suspend, the resume process of the
ALSA sink and source is unstable. Sometimes the device needs to be restarted
multiple times and when the system was suspended between snd_pcm_mmap_begin()
and snd_pcm_mmap_commit(), pulseaudio crashes on resume.
Additionally, variables are not reset after the resume, so that sink/source
report wrong latencies.
This patch fixes the issues by closing and re-opening the PCM if recovery
from an error condition is not possible. Additionally, the variables are
reset, so that latencies are reported correctly.
pa_split_in_place() and pa_split_spaces_in_place() are modifed
to use size_t type instead of integer type.
alsa-ucm.c is revised according to this change.
Signed-off-by: Sangchul Lee <sc11.lee@samsung.com>
