When api.alsa.split-enable=true for ACP device, instruct UCM to not
use alsa-lib plugins for SplitPCM devices.
Grab the information from UCM for the intended channel remapping, and
add the splitting information to the nodes emitted.
Session manager can then look at that, and load nodes to do the channel
splitting.
The current biquad calculations are based on RBJ's cookbook [1],
except for low-/highpass. Since the filter configuration is also
based on using the definition of Q, it makes sense to also align
the remaining calculations to use the same filter cookbook instead
of using resonance which doesn't result in the same coefficients
as when using Q.
[1] = https://www.w3.org/TR/audio-eq-cookbook/
Add support for latencyOffsetNsec Prop, which just controls the nsec
part of the ProcessLatency.
This is needed to support latency offset in Pulseaudio apps when using
loopbacks as front-end nodes to underlying sinks.
The expression `VBAN_PROTOCOL_SERIAL | vban_BPSList[14]` is assigned
to an 8 bit field of the header, but, `vban_BPSList[14]` being
115200, it does not fit. Instead, its index, 14, should be
placed in the header.
In addition to fixing the issue, add `-Werror=constant-conversion`,
and clang diagnostic that catches such issues.
Fixes: 1a5514e5cf ("module-vban: create streams per stream_name")
Currently, the PipeWire daemon registers BlueZ LE Media Endpoints
with audio capabilities covering all settings defined in the BAP spec.
However, some scenarios might require the capabilities to be restricted
to specific configurations.
This adds a method to read LC3 codec specific capabilities from the
Wireplumber config file, and provide those settings when registering
Media Endpoint objects with BlueZ. If the values are not present in
the config file, all settings will be used by default.
Below is an example of how to set the LC3 capabilities in the config
file, to support the 16_2 setting from the BAP spec:
bluez5.bap-server-capabilities.rates = [16000]
bluez5.bap-server-capabilities.durations = [10]
bluez5.bap-server-capabilities.channels = [1, 2]
bluez5.bap-server-capabilities.framelen_min = 40
bluez5.bap-server-capabilities.framelen_max = 40
bluez5.bap-server-capabilities.max_frames = 2
The ladspa plugin uses `dlopen()`, etc. directly,
so add the `dl_lib` dependency. This is not necessary
in a new enough environment since newer glibc versions
have merged most things into libc.
For a BAP Broadcast Source endpoint, the QoS sync_factor enables the user
to adjust the Periodic Advertising interval based on the ISO interval
configured for the stream:
PA_Interval = sync_factor * ISO_Interval
Currently, this value is hardcoded to 2. This commit makes the sync_factor
configurable in the Wireplumber config file, along with the other config
parameters for BIGs.
The value is used when a the format changes in handle_format_change(),
and while it seems this was typically expected to happen async and thus
protected by the thread lock, there are cases (such as with
auto-port-config) where a param might be set within the
pw_stream_connect() call itself (in the case of auto-port-config, by the
impl_init() of the audioadapter).
The `build_all` job enables most features, including the ebur128
filter-graph plugin. However, the dependency is currently not
installed, which leads to meson failing to set up the build.
Fixes: df271d13f3 ("filter-chain: add ebur128 filter")
Since fc49c1697a ("context: improve negotiation") it is possible
that the out parameter `format` will be set to `filter`. However,
`filter` is a SPA POD from the local SPA POD builder `fb`, which
references the local buffer `fbuf`.
In those cases, if the callers then make use of the returned SPA POD,
a stack use-after-free happens, such as the one displayed below.
The issue could be reliably triggered by executing the `video-play`
example program, and then trying to use the same camera in firefox.
As seen below, the input node, firefox's, provides no format preference,
causing the output format to be used. Previously, this had led
to the use-after-free described above.
pw.link | [impl-link.c: 130 link_update_state()] (46.0.1 -> 114.0.0) init -> negotiating (paused-configure)
pw.context | [ context.c: 935 pw_context_find_format()] 0x51e000000080: finding best format 3 1
pw.context | [ context.c: 943 pw_context_find_format()] 0x51e000000080: states 3 1
pw.context | [ context.c: 958 pw_context_find_format()] 0x51e000000080: Got output format:
pw.context | [ context.c: 959 pw_context_find_format()] video/raw
pw.context | [ context.c: 959 pw_context_find_format()] format : (Id) YUY2
pw.context | [ context.c: 959 pw_context_find_format()] size : (Rectangle) 640x480
pw.context | [ context.c: 959 pw_context_find_format()] framerate : (Fraction) 30/1
pw.context | [ context.c: 966 pw_context_find_format()] 0x51e000000080: no input format filter, using output format: Success
=================================================================
==418404==ERROR: AddressSanitizer: stack-use-after-return on address 0x73993ee46200 at pc 0x739941d31020 bp 0x7fff526b4670 sp 0x7fff526b4660
READ of size 4 at 0x73993ee46200 thread T0
#0 0x739941d3101f in spa_pod_builder_raw ../spa/include/spa/pod/builder.h:150
#1 0x739941d3b35d in do_negotiate ../src/pipewire/impl-link.c:294
#2 0x739941d46214 in check_states ../src/pipewire/impl-link.c:727
#3 0x739941f14405 in process_work_queue ../src/pipewire/work-queue.c:64
#4 0x73993d0dbe99 in source_event_func ../spa/plugins/support/loop.c:894
#5 0x73993d0d6881 in loop_iterate ../spa/plugins/support/loop.c:727
#6 0x739941d76b05 in spa_loop_control_enter ../spa/include/spa/support/loop.h:264
#7 0x739941d76d93 in spa_loop_control_leave ../spa/include/spa/support/loop.h:268
#8 0x739941d78946 in pw_main_loop_quit ../src/pipewire/main-loop.c:109
#9 0x5a64b3cb1cec in main ../src/daemon/pipewire.c:130
#10 0x739940c34e07 (/usr/lib/libc.so.6+0x25e07) (BuildId: 98b3d8e0b8c534c769cb871c438b4f8f3a8e4bf3)
#11 0x739940c34ecb in __libc_start_main (/usr/lib/libc.so.6+0x25ecb) (BuildId: 98b3d8e0b8c534c769cb871c438b4f8f3a8e4bf3)
#12 0x5a64b3caf3b4 in _start (/pipewire/build/src/daemon/pipewire+0x173b4) (BuildId: f9e8403a377e28bf8bd9cf0a5b89d33f08499917)
Address 0x73993ee46200 is located in stack of thread T0 at offset 512 in frame
#0 0x739941c6ed5e in pw_context_find_format ../src/pipewire/context.c:907
This frame has 15 object(s):
[...]
[432, 480) 'fb' (line 911)
[512, 4608) 'fbuf' (line 912) <== Memory access at offset 512 is inside this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-use-after-return ../spa/include/spa/pod/builder.h:150 in spa_pod_builder_raw
[...]
Fixes: fc49c1697a ("context: improve negotiation")
The EBU R128 filter measures the signal and generates LUFS control
notifications for further processing.
It also adds a plugin that can convert LUFS to a gain (based on a target
LUFS).
Also add an example filter-chain to enable the EBU R128 measurement and
how to use the results to adjust the volume dynamically.
See #2286#222#2210
Don't activate the nodes while linking but make a last stage where all
the nodes are activated. This makes it possible to better set up the
nodes based on the port data.
While initializing ALSA cards with UCM, we call pa_alsa_ucm_add_port()
for each UCM device for each UCM verb. This checks if a port has been
already added by name and skips port initialization if it is already
done. Different UCM verbs can have devices with the same name, which
means their port names end up being the same. So, this port creation
step currently is only done for one UCM verb for both UCM devices.
Volume control setup is also part of this process. The UCM devices only
know about the volume mixer information from the UCM verb that they are
defined in, so the volume control setup is done for one UCM verb at a
time. Skipping this setup when a same-named port exists means only the
profiles belonging to the first initialized UCM verb have working
hardware volume control.
Move the volume control setup out of the port initialization block so
that we try to do it every time, therefore for every UCM verb. However,
check that we don't run it twice for the same UCM verb for a port.
In theory, the PlaybackVolume etc. value can be different per-verb
for the same device, so we can't simplify this code to a single volume
setup per port.
Link: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/840
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
What may be NULL in these methods is the pointer to the object
containing the spa_interface, not the interface pointer itself.
Fixes spa-acp-tool crashing with NULL deref in spa_i18n.
Encoders and some decoders have additional internal latency that needs
to be accounted for.
This mostly matters for AAC (~40ms), as the other BT codecs have much
lower delays (~5ms).
Airpods don't follow the specification and set multiple bits in AAC
object type, including the ELD bit, but actually want AAC-LC. So check
the AOT in the right order.
When calculating the adjusted max quantum based off of max_latency, the
first multiplication can overflow uint32_t, leading to the quantum being
wrongfully clamped down.
Signed-off-by: Martin Louazel <martin.louazel@streamunlimited.com>
When in A2DP sink role and remote end switches codec, BlueZ nowadays
appears sometimes emit first SetConfiguration (creating new transport),
and then ClearConfiguration (removing old transport).
Handle this case: emit profiles_changed event always when transports
come/go.
Redefine profiles_changed() to take bitmask of profiles whose connection
status changed, so we don't need to emit two remove+add events.
Commit 88bb0bd7cc ("alsa: Allow to augment ucm port properties") adds
icon properties for some common port names, so that GUIs can show a
relevant icon to help disambiguate devices. However, these still do not
show up in pavucontrol, because it shows icons based on mappings'
properties. Add the relevant property to mappings as well.
Link: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/839
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
While trying to figure out device subsets that have aren't internally
contain conflicting devices, we walk through all possible subsets and
check each set if it satisfies ConflictingDevices/SupportedDevices
listed in UCM configuration. For a better user experience, we want to
skip subsets that are fully included in another valid subset we will
also generate.
The iterate_device_subsets() function that achieves the former is
intentionally in iterative form to avoid a stack overflow, since it will
walk through 2^n sets. However, the iterate_maximal_device_subsets()
function that skips incomplete sets is in recursive form, as I had
assumed tail-call optimization would take care of the potential problem.
Convert iterate_maximal_device_subsets() to an iterative form, because
the recursion seems to trigger a segfault with more than 16 devices on
PulseAudio. It doesn't seem to happen on PipeWire, but it's better to
not leave it to luck.
Link: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/838
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Because the max plugin is marked as SUPPORTS_NULL, the input and output
pointers can be NULL. Handle these cases. Also reindent with tabs (not 7
spaces).
