For matching kctl without the numid you need to specify interface,
device, subdevice, name and index. So the current implementation can
only match kctls on IFACE_PCM, device 0, subdevice 0 and index 0.
Instead of adding all these matching parameters this commit fetches all
kctls attached to the audio card and match on the first occurred kctl
with matching name.
This should be sufficient for audio cards with unique kctl names. When
non unique names are needed, more kctl matching parameters needs to be
added.
ALSA controls can only be opened on the card itself and will fail when
trying to open controls on the ALSA device. The device name we get may
or may not include the device suffix. If no suffix is present the
default device is 0 that's why currently it works on most audio cards.
But all other devices above 0 needs the suffix [1].
[1]
Device 0: hw:cardname
Device 0: hw:cardname,0
Device 1: hw:cardname,1
Device 2: hw:cardname,2
Device X: hw:cardname,X
We know in IRQ mode that any valid hi-res timestamp that the
driver privides will be before the wakeup event in pipewire.
This makes it so in IRQ mode we use better timestamping when possible,
which decreases jitter injected into the DLL, which in turn reduces
the amount of oscillations the resampler is exposed to.
Currently the HDMI output paths have jack mixers named "HDMI/DP" and
with append-pcm-to-name=true. However, most of the SOC audio drivers
are just named "HDMI" and don't add the ",pcm=N". Add these alternate
jack names to the HDMI audio path files so that jack detection will work
on these SOCs.
Keep track of the valid ports and don't emit port info for
invalid ports. When a listener is added while the ports are being
created, it is possible that the ports are still NULL or invalid.
Add some option to set manually group IDs of unicast streams
of devices.
Intel controllers don't appear to support more than one group at a time,
but in principle this can be done.
Propagate the error if spa_system_eventfd_create() fails. Also copy
errno before calling spa_log_debug() in spa_system_eventfd_create() to
make sure it is not overwritten.
The rate we get from dlls can have a subsample precision. However,
the check for using process_copy is in sample precision. This means
that an adaptive stream will oscillate rather then lock into the
exact rate.
We would timestamp within an unlikely block, which would introduce
additional jitter to current_time, which would have an impact on
the performance of the timer sensitive code.
Previously both `impl_on_notify_events()` and `process_{device,card}()`
called `check_access()`. Avoid that by merging `ACTION_ADD` and
`ACTION_DISABLE` into a single `ACTION_CHANGE` and let `process_{device,card}()`
call `check_access()` and decide what to do.
Split up `process_{device,card}()` to have a separate function that does
the lookup based on the udev device, and only use that when there is
no available reference to the actual device/card object.
`IN_IGNORED` event is sent whenever the watch is removed,
which includes when the entity is deleted among other things,
so watch that instead of the more specific `IN_DELETE_SELF`.
Add a MAPPABLE data flag that hints that the fd in the data is mappable
with a simple mmap/munmap. Normally, DmaBuf is not mappable like that
unless explicitly indicated with this flag.
Set the MAPPABLE flag on the DmaBuf from v4l2 and libcamera fd.
When asked, mmap the buffer memory in all cases when the MAPPABLE
flag is set.
This solves the case where v4l2 has exported DmaBuf and is streaming to
node A and then node B links but doesn't get automatically mmaped
memory.
Fixes#3840
When the invoke ringbuffer is full, sleep a little and try again.
Add an option to set the retty timeout, setting this to 0 restores
the old behaviour of returning -EPIPE.
Most callers don't check the return values and might assume the invoke
call is queued or executed, which could cause crashes or leaks.
When the queue overruns, it's better to log a warning and hope that the
problem is resolved soon. We might abort or return the error to the
caller later if we want to break the retry loop.
See !1887
The file is moved into a new "include-private" directory. This is done
because otherwise adjustments would have to be made to the list of installed
headers, the way include tests currently work and which files are
used for generating documentation.
Fix some sanity checks and add mtu check. Don't use
spa_return_val_if_fail here as it can spam stderr.
The buffer size check in codec_encode can't be hit.
