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feat: merge subscriptions crate into cosmic-settings repo

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Michael Aaron Murphy 2025-10-08 08:19:35 +02:00 • committed by Michael Murphy
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[package]
name = "cosmic-settings-sound-subscription"
version = "1.0.0-beta1"
edition = "2024"
rust-version.workspace = true
license = "MPL-2.0"
publish = true
[dependencies]
async-fn-stream = "0.3.1"
futures = "0.3.31"
indexmap = "2.11.4"
libcosmic = { git = "https://github.com/pop-os/libcosmic" }
libpulse-binding = "2.30.1"
log = "0.4.28"
pipewire = "0.8"
rustix = "1.0.8"
tokio = "1.47.1"
tracing = "0.1.41"

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Mozilla Public License Version 2.0
==================================
## 1. Definitions
### 1.1. "Contributor"
means each individual or legal entity that creates, contributes to
the creation of, or owns Covered Software.
### 1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used
by a Contributor and that particular Contributor's Contribution.
### 1.3. "Contribution"
means Covered Software of a particular Contributor.
### 1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached
the notice in Exhibit A, the Executable Form of such Source Code
Form, and Modifications of such Source Code Form, in each case
including portions thereof.
### 1.5. "Incompatible With Secondary Licenses"
means
+ (a) that the initial Contributor has attached the notice described
in Exhibit B to the Covered Software; or
+ (b) that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the
terms of a Secondary License.
### 1.6. "Executable Form"
means any form of the work other than Source Code Form.
### 1.7. "Larger Work"
means a work that combines Covered Software with other material, in
a separate file or files, that is not Covered Software.
### 1.8. "License"
means this document.
### 1.9. "Licensable"
means having the right to grant, to the maximum extent possible,
whether at the time of the initial grant or subsequently, any and
all of the rights conveyed by this License.
### 1.10. "Modifications"
means any of the following:
+ (a) any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered
Software; or
+ (b) any new file in Source Code Form that contains any Covered
Software.
### 1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the
License, by the making, using, selling, offering for sale, having
made, import, or transfer of either its Contributions or its
Contributor Version.
### 1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU
Lesser General Public License, Version 2.1, the GNU Affero General
Public License, Version 3.0, or any later versions of those
licenses.
### 1.13. "Source Code Form"
means the form of the work preferred for making modifications.
### 1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that
controls, is controlled by, or is under common control with You. For
purposes of this definition, "control" means (a) the power, direct
or indirect, to cause the direction or management of such entity,
whether by contract or otherwise, or (b) ownership of more than
fifty percent (50%) of the outstanding shares or beneficial
ownership of such entity.
## 2. License Grants and Conditions
### 2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
+ (a) under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
+ (b) under Patent Claims of such Contributor to make, use, sell, offer
for sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
### 2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
### 2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
+ (a) for any code that a Contributor has removed from Covered Software;
or
+ (b) for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
+ (c) under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
### 2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
### 2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights
to grant the rights to its Contributions conveyed by this License.
### 2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
### 2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
in Section 2.1.
## 3. Responsibilities
### 3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
### 3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
+ (a) such Covered Software must also be made available in Source Code
Form, as described in Section 3.1, and You must inform recipients of
the Executable Form how they can obtain a copy of such Source Code
Form by reasonable means in a timely manner, at a charge no more
than the cost of distribution to the recipient; and
+ (b) You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter
the recipients' rights in the Source Code Form under this License.
### 3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
### 3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty,
or limitations of liability) contained within the Source Code Form of
the Covered Software, except that You may alter any license notices to
the extent required to remedy known factual inaccuracies.
### 3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
## 4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this
License with respect to some or all of the Covered Software due to
statute, judicial order, or regulation then You must: (a) comply with
the terms of this License to the maximum extent possible; and (b)
describe the limitations and the code they affect. Such description must
be placed in a text file included with all distributions of the Covered
Software under this License. Except to the extent prohibited by statute
or regulation, such description must be sufficiently detailed for a
recipient of ordinary skill to be able to understand it.
## 5. Termination
5.1. The rights granted under this License will terminate automatically
if You fail to comply with any of its terms. However, if You become
compliant, then the rights granted under this License from a particular
Contributor are reinstated (a) provisionally, unless and until such
Contributor explicitly and finally terminates Your grants, and (b) on an
ongoing basis, if such Contributor fails to notify You of the
non-compliance by some reasonable means prior to 60 days after You have
come back into compliance. Moreover, Your grants from a particular
Contributor are reinstated on an ongoing basis if such Contributor
notifies You of the non-compliance by some reasonable means, this is the
first time You have received notice of non-compliance with this License
from such Contributor, and You become compliant prior to 30 days after
Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all
end user license agreements (excluding distributors and resellers) which
have been validly granted by You or Your distributors under this License
prior to termination shall survive termination.
## 6. Disclaimer of Warranty
**Covered Software is provided under this License on an "as is"
basis, without warranty of any kind, either expressed, implied, or
statutory, including, without limitation, warranties that the
Covered Software is free of defects, merchantable, fit for a
particular purpose or non-infringing. The entire risk as to the
quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You
(not any Contributor) assume the cost of any necessary servicing,
repair, or correction. This disclaimer of warranty constitutes an
essential part of this License. No use of any Covered Software is
authorized under this License except under this disclaimer.**
#7. Limitation of Liability
**Under no circumstances and under no legal theory, whether tort
(including negligence), contract, or otherwise, shall any
Contributor, or anyone who distributes Covered Software as
permitted above, be liable to You for any direct, indirect,
special, incidental, or consequential damages of any character
including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any
and all other commercial damages or losses, even if such party
shall have been informed of the possibility of such damages. This
limitation of liability shall not apply to liability for death or
personal injury resulting from such party's negligence to the
extent applicable law prohibits such limitation. Some
jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages, so this exclusion and
limitation may not apply to You.**
## 8. Litigation
Any litigation relating to this License may be brought only in the
courts of a jurisdiction where the defendant maintains its principal
place of business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions.
Nothing in this Section shall prevent a party's ability to bring
cross-claims or counter-claims.
## 9. Miscellaneous
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides
that the language of a contract shall be construed against the drafter
shall not be used to construe this License against a Contributor.
## 10. Versions of the License
### 10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
### 10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
### 10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
### 10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
## Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular
file, then You may include the notice in a location (such as a LICENSE
file in a relevant directory) where a recipient would be likely to look
for such a notice.
You may add additional accurate notices of copyright ownership.
## Exhibit B - "Incompatible With Secondary Licenses" Notice
This Source Code Form is "Incompatible With Secondary Licenses", as
defined by the Mozilla Public License, v. 2.0.

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// Copyright 2024 System76 <info@system76.com>
// SPDX-License-Identifier: MPL-2.0
pub mod pipewire;
pub mod pulse;
use cosmic::Task;
use cosmic::iced_futures::MaybeSend;
use futures::{Stream, StreamExt};
use indexmap::IndexMap;
use std::{collections::BTreeMap, sync::Arc, time::Duration};
pub type NodeId = u32;
pub type ProfileId = u32;
pub fn watch() -> impl Stream<Item = Message> + MaybeSend + 'static {
async_fn_stream::fn_stream(|emitter| async move {
let (cancel_tx, mut cancel_rx) = futures::channel::oneshot::channel::<()>();
let (tx, mut pulse_rx) = futures::channel::mpsc::channel(1);
let _pulse_handle = std::thread::spawn(move || {
pulse::thread(tx);
});
let (tx, mut pw_rx) = futures::channel::mpsc::channel(1);
let (_pipewire_handle, pipewire_terminate) = pipewire::thread(tx);
emitter
.emit(
Message::SubHandle(Arc::new(SubscriptionHandle {
cancel_tx,
pipewire: pipewire_terminate,
}))
.into(),
)
.await;
let mut pulse_channels = None;
let mut balance = None;
let mut source_volume = None;
let mut sink_volume = None;
let mut events = Vec::new();
let mut timer = tokio::time::interval(Duration::from_millis(64));
loop {
tokio::select! {
event = pulse_rx.next() => {
let Some(event) = event else {
break;
};
match event {
pulse::Event::Channels(channels) => pulse_channels = Some(channels),
pulse::Event::SinkVolume(volume) => sink_volume = Some(volume),
pulse::Event::SourceVolume(volume) => source_volume = Some(volume),
pulse::Event::Balance(value) => balance = Some(value),
_ => {
events.push(Server::Pulse(event));
timer.reset();
}
}
}
event = pw_rx.next() => {
let Some(event) = event else {
break;
};
timer.reset();
events.push(Server::Pipewire(event));
}
_ = timer.tick() => {
if let Some(channels) = pulse_channels.take() {
events.push(Server::Pulse(pulse::Event::Channels(channels)));
}
if let Some(volume) = sink_volume.take() {
events.push(Server::Pulse(pulse::Event::SinkVolume(volume)));
}
if let Some(volume) = source_volume.take() {
events.push(Server::Pulse(pulse::Event::SourceVolume(volume)));
}
if let Some(balance) = balance.take() {
events.push(Server::Pulse(pulse::Event::Balance(balance)));
}
if !events.is_empty() {
emitter
.emit(Message::Server(Arc::from(std::mem::take(&mut events))))
.await;
}
}
_ = &mut cancel_rx => break,
}
}
drop(pulse_rx);
drop(pw_rx);
futures::future::pending::<Message>().await;
})
}
#[derive(Default)]
pub struct Model {
subscription_handle: Option<SubscriptionHandle>,
sink_channels: Option<pulse::PulseChannels>,
devices: BTreeMap<DeviceId, Card>,
card_names: IndexMap<DeviceId, String>,
card_profiles: IndexMap<DeviceId, Vec<pulse::CardProfile>>,
active_profiles: IndexMap<DeviceId, Option<String>>,
/** Sink devices */
/// Product names for source sink devices.
sinks: Vec<String>,
/// Pipewire object IDs for sink devices.
sink_pw_ids: Vec<NodeId>,
/// Profile IDs for the actively-selected sink device.
sink_profiles: Vec<String>,
/// Names of profiles for the actively-selected sink device.
sink_profile_names: Vec<String>,
/// Device ID of active sink device.
active_sink_device: Option<DeviceId>,
/// Index of active sink device.
active_sink: Option<usize>,
/// Card profile index of active sink device.
active_sink_profile: Option<usize>,
/** Source devices */
/// Product names for source devices.
sources: Vec<String>,
/// Pipewire object IDs for source devices.
source_pw_ids: Vec<NodeId>,
/// Profile IDs for the actively-selected source device.
source_profiles: Vec<String>,
/// Names of profiles for the actively-selected source device.
source_profile_names: Vec<String>,
/// Device ID of active source device.
active_source_device: Option<DeviceId>,
/// Index of active source device.
active_source: Option<usize>,
/// Card profile index of active source device.
active_source_profile: Option<usize>,
/// Device identifier of the default sink.
default_sink: String,
/// Device identifier of the default source.
default_source: String,
pub sink_volume_text: String,
pub source_volume_text: String,
pub sink_balance_text: Option<String>,
pub sink_balance: Option<f32>,
pub sink_volume: u32,
pub source_volume: u32,
pub sink_mute: bool,
sink_volume_debounce: bool,
sink_balance_debounce: bool,
pub source_mute: bool,
source_volume_debounce: bool,
changing_sink_profile: Option<DeviceId>,
changing_source_profile: Option<DeviceId>,
}
impl Model {
pub fn active_sink(&self) -> Option<usize> {
self.active_sink
}
pub fn active_sink_profile(&self) -> Option<usize> {
self.active_sink_profile
}
pub fn active_source(&self) -> Option<usize> {
self.active_source
}
pub fn active_source_profile(&self) -> Option<usize> {
self.active_source_profile
}
pub fn sinks(&self) -> &[String] {
&self.sinks
}
pub fn sink_profiles(&self) -> &[String] {
&self.sink_profiles
}
pub fn sources(&self) -> &[String] {
&self.sources
}
pub fn source_profiles(&self) -> &[String] {
&self.source_profiles
}
pub fn clear(&mut self) {
if let Some(handle) = self.subscription_handle.take() {
_ = handle.cancel_tx.send(());
_ = handle.pipewire.send(());
}
if let Some(channel) = self.sink_channels.take() {
channel.quit();
}
}
pub fn sink_balance_changed(&mut self, balance: u32) -> Task<Message> {
self.sink_balance = Some((balance as f32 - 100.) / 100.);
self.sink_balance_text = Some(format!("{balance:.2}"));
if self.sink_balance_debounce {
return Task::none();
}
if !self
.sink_pw_ids
.get(self.active_sink.unwrap_or(0))
.is_none()
{
self.sink_balance_debounce = true;
return cosmic::Task::future(async move {
tokio::time::sleep(Duration::from_millis(64)).await;
Message::SinkBalanceApply.into()
});
}
Task::none()
}
pub fn sink_changed(&mut self, pos: usize) -> Task<Message> {
if let Some(&node_id) = self.sink_pw_ids.get(pos) {
for card in self.devices.values() {
for (&nid, port) in &card.ports {
if node_id == nid {
self.active_sink = Some(pos);
let identifier = port.identifier.clone();
return cosmic::Task::future(async move {
wpctl_set_default(nid).await;
Message::SetDefaultSink(identifier).into()
});
}
}
}
}
Task::none()
}
pub fn sink_mute_toggle(&mut self) {
self.sink_mute = !self.sink_mute;
if let Some(&node_id) = self.sink_pw_ids.get(self.active_sink.unwrap_or(0)) {
wpctl_set_mute(node_id, self.sink_mute);
}
}
pub fn sink_profile_changed(&mut self, profile: usize) -> Task<Message> {
self.active_sink_profile = Some(profile);
if let Some(profile) = self.sink_profile_names.get(profile).cloned() {
if let Some(device_id) = self.active_sink_device.clone() {
if let Some(name) = self.card_names.get(&device_id).cloned() {
self.active_profiles
.insert(device_id.clone(), Some(profile.clone()));
self.changing_sink_profile = Some(device_id);
return cosmic::Task::future(async move {
pactl_set_card_profile(name, profile).await;
})
.discard();
}
}
}
Task::none()
}
pub fn sink_volume_changed(&mut self, volume: u32) -> Task<Message> {
self.sink_volume = volume;
self.sink_volume_text = volume.to_string();
if self.sink_volume_debounce {
return Task::none();
}
if let Some(&node_id) = self.sink_pw_ids.get(self.active_sink.unwrap_or(0)) {
self.sink_volume_debounce = true;
return cosmic::Task::future(async move {
tokio::time::sleep(Duration::from_millis(64)).await;
Message::SinkVolumeApply(node_id).into()
});
}
Task::none()
}
pub fn source_changed(&mut self, pos: usize) -> Task<Message> {
if let Some(&node_id) = self.source_pw_ids.get(pos) {
for card in self.devices.values() {
for (&nid, port) in &card.ports {
if node_id == nid {
self.active_source = Some(pos);
let identifier = port.identifier.clone();
return cosmic::Task::future(async move {
wpctl_set_default(nid).await;
Message::SetDefaultSource(identifier).into()
});
}
}
}
}
Task::none()
}
pub fn source_mute_toggle(&mut self) {
self.source_mute = !self.source_mute;
if let Some(&node_id) = self.source_pw_ids.get(self.active_source.unwrap_or(0)) {
wpctl_set_mute(node_id, self.source_mute);
}
}
pub fn source_profile_changed(&mut self, profile: usize) -> Task<Message> {
self.active_source_profile = Some(profile);
if let Some(profile) = self.source_profile_names.get(profile).cloned() {
if let Some(device_id) = self.active_source_device.clone() {
if let Some(name) = self.card_names.get(&device_id).cloned() {
self.active_profiles
.insert(device_id.clone(), Some(profile.clone()));
self.changing_source_profile = Some(device_id.clone());
return cosmic::Task::future(async move {
pactl_set_card_profile(name, profile).await;
})
.discard();
}
}
}
Task::none()
}
pub fn source_volume_changed(&mut self, volume: u32) -> Task<Message> {
self.source_volume = volume;
self.source_volume_text = volume.to_string();
if self.source_volume_debounce {
return Task::none();
}
if let Some(&node_id) = self.source_pw_ids.get(self.active_source.unwrap_or(0)) {
self.source_volume_debounce = true;
return cosmic::Task::future(async move {
tokio::time::sleep(Duration::from_millis(64)).await;
Message::SourceVolumeApply(node_id).into()
});
}
Task::none()
}
pub fn update(&mut self, message: Message) -> Task<Message> {
match message {
Message::Server(events) => {
for event in Arc::into_inner(events).into_iter().flatten() {
match event {
Server::Pulse(event) => match event {
pulse::Event::SourceVolume(volume) => {
if self.sink_volume_debounce {
return Task::none();
}
self.source_volume = volume;
self.source_volume_text = volume.to_string();
}
pulse::Event::SinkVolume(volume) => {
if self.sink_volume_debounce {
return Task::none();
}
self.sink_volume = volume;
self.sink_volume_text = volume.to_string();
}
pulse::Event::CardInfo(card) => {
let device_id = match card.variant {
pulse::DeviceVariant::Alsa { alsa_card, .. } => {
DeviceId::Alsa(alsa_card)
}
pulse::DeviceVariant::Bluez5 { address, .. } => {
DeviceId::Bluez5(address)
}
};
eprintln!(
"inserting card {:?}: name={}, active_profile={:?}, profiles={:?}",
device_id,
card.name,
card.active_profile.as_ref().map(|p| p.name.as_str()),
card.profiles
);
self.card_names.insert(device_id.clone(), card.name);
self.card_profiles.insert(device_id.clone(), card.profiles);
self.active_profiles
.insert(device_id, card.active_profile.map(|p| p.name));
}
pulse::Event::DefaultSink(sink) => {
if !self.changing_sink_profile.is_some() {
self.set_default_sink(sink);
}
}
pulse::Event::DefaultSource(source) => {
if !self.changing_source_profile.is_some() {
self.set_default_source(source);
}
}
pulse::Event::SinkMute(mute) => {
self.sink_mute = mute;
}
pulse::Event::SourceMute(mute) => {
self.source_mute = mute;
}
pulse::Event::Balance(balance) => {
self.sink_balance = balance;
self.sink_balance_text = balance.map(|b| format!("{b:.2}"));
}
pulse::Event::Channels(channels) => {
self.sink_channels = Some(channels);
}
},
Server::Pipewire(event) => match event {
pipewire::DeviceEvent::Add(device) => {
let device_id = match device.variant {
pipewire::DeviceVariant::Alsa { alsa_card, .. } => {
DeviceId::Alsa(alsa_card)
}
pipewire::DeviceVariant::Bluez5 { address, .. } => {
DeviceId::Bluez5(address)
}
pipewire::DeviceVariant::Unknown {} => DeviceId::Unknown {},
};
match device.media_class {
pipewire::MediaClass::Sink => {
self.sinks.push(device.product_name.clone());
self.sink_pw_ids.push(device.object_id);
sort_pulse_devices(&mut self.sinks, &mut self.sink_pw_ids);
if self.default_sink == device.node_name {
self.active_sink_device = Some(device_id.clone());
self.active_sink = self
.sinks
.iter()
.position(|s| *s == device.product_name);
self.set_sink_profiles(&device_id);
}
}
pipewire::MediaClass::Source => {
self.sources.push(device.product_name.clone());
self.source_pw_ids.push(device.object_id);
sort_pulse_devices(
&mut self.sources,
&mut self.source_pw_ids,
);
if self.default_source == device.node_name {
self.active_source = self
.sources
.iter()
.position(|s| *s == device.product_name);
self.active_source_device = Some(device_id.clone());
self.set_source_profiles(&device_id);
}
}
}
let card = self.devices.entry(device_id).or_insert_with(|| Card {
ports: IndexMap::new(),
});
card.ports.insert(
device.object_id,
CardPort {
class: device.media_class,
identifier: device.node_name,
description: device.product_name,
},
);
card.ports.sort_unstable_by(|_, av, _, bv| {
av.description.cmp(&bv.description)
});
}
pipewire::DeviceEvent::Remove(node_id) => {
let mut remove = None;
for (card_id, card) in &mut self.devices {
if card.ports.shift_remove(&node_id).is_some() {
if card.ports.is_empty() {
remove = Some(card_id.clone());
}
break;
}
}
if let Some(card_id) = remove {
_ = self.devices.remove(&card_id);
}
if let Some(pos) =
self.sink_pw_ids.iter().position(|&id| id == node_id)
{
_ = self.sink_pw_ids.remove(pos);
_ = self.sinks.remove(pos);
if self.active_sink == Some(pos) {
self.active_sink = None;
self.active_sink_device = None;
self.active_sink_profile = None;
} else {
self.active_sink = self.active_sink.map(|active_pos| {
if active_pos > pos {
active_pos - 1
} else {
active_pos
}
});
}
} else if let Some(pos) =
self.source_pw_ids.iter().position(|&id| id == node_id)
{
_ = self.source_pw_ids.remove(pos);
_ = self.sources.remove(pos);
if self.active_source == Some(pos) {
self.active_source = None;
self.active_source_device = None;
self.active_source_profile = None;
}
}
}
},
}
}
let mut tasks = Task::none();
if let Some(device_id) = self.changing_sink_profile.take() {
tasks = tasks.chain(self.sink_profile_select(device_id));
}
if let Some(device_id) = self.changing_source_profile.take() {
tasks = tasks.chain(self.source_profile_select(device_id));
}
return tasks;
}
Message::SinkBalanceApply => {
self.sink_balance_debounce = false;
if let Some((balance, channels)) =
self.sink_balance.zip(self.sink_channels.as_mut())
{
channels.set_balance(balance);
}
}
Message::SinkVolumeApply(_) => {
self.sink_volume_debounce = false;
if let Some(channels) = self.sink_channels.as_mut() {
channels.set_volume(self.sink_volume as f32 / 100.);
}
}
Message::SourceVolumeApply(node_id) => {
self.source_volume_debounce = false;
wpctl_set_volume(node_id, self.source_volume);
}
Message::SetDefaultSink(identifier) => self.set_default_sink(identifier),
Message::SetDefaultSource(identifier) => self.set_default_source(identifier),
Message::SubHandle(handle) => {
if let Some(handle) = Arc::into_inner(handle) {
self.subscription_handle = Some(handle);
}
}
}
Task::none()
}
fn device_profiles(&self, device_id: &DeviceId) -> (Vec<String>, Vec<String>, Option<usize>) {
let (profiles, profile_descriptions): (Vec<String>, Vec<String>) = self
.card_profiles
.get(device_id)
.map_or((Vec::new(), Vec::new()), |profiles| {
profiles
.iter()
.filter(|p| p.available && p.name != "off")
.map(|p| (p.name.clone(), p.description.clone()))
.collect()
});
let active_profile = self.active_profiles.get(device_id).and_then(|profile| {
profile
.as_ref()
.and_then(|profile| profiles.iter().position(|p| p == profile))
});
(profiles, profile_descriptions, active_profile)
}
/// Update the state of the default sink and its profiles.
fn set_default_sink(&mut self, sink: String) {
if self.default_sink == sink {
return;
}
self.default_sink = sink;
for (device_id, card) in &self.devices {
for (&node_id, card_port) in &card.ports {
if let pipewire::MediaClass::Sink = card_port.class {
if &card_port.identifier == &self.default_sink {
let device_id = device_id.clone();
self.set_sink_profiles(&device_id);
self.active_sink = self.sink_pw_ids.iter().position(|&id| id == node_id);
self.active_sink_device = Some(device_id);
return;
}
}
}
}
}
fn set_default_source(&mut self, source: String) {
if self.default_source == source {
return;
}
self.default_source = source;
for (device_id, card) in &self.devices {
for (&node_id, card_ports) in &card.ports {
if let pipewire::MediaClass::Source = card_ports.class {
if card_ports.identifier == self.default_source {
self.active_source =
self.source_pw_ids.iter().position(|&id| id == node_id);
let device_id = device_id.clone();
self.set_source_profiles(&device_id);
self.active_source_device = Some(device_id);
return;
}
}
}
}
}
fn set_sink_profiles(&mut self, device_id: &DeviceId) {
(
self.sink_profile_names,
self.sink_profiles,
self.active_sink_profile,
) = self.device_profiles(device_id);
}
fn set_source_profiles(&mut self, device_id: &DeviceId) {
(
self.source_profile_names,
self.source_profiles,
self.active_source_profile,
) = self.device_profiles(device_id);
}
fn sink_profile_select(&mut self, device_id: DeviceId) -> Task<Message> {
let sink_pos = self.active_sink.unwrap_or(0);
if let Some(card) = self.devices.get(&device_id) {
if let Some((&nid, port)) = card.ports.get_index(sink_pos) {
let identifier = port.identifier.clone();
return cosmic::Task::future(async move {
wpctl_set_default(nid).await;
Message::SetDefaultSink(identifier)
});
}
}
Task::none()
}
fn source_profile_select(&mut self, device_id: DeviceId) -> Task<Message> {
self.changing_source_profile = None;
let source_pos = self.active_source.unwrap_or(0);
if let Some(card) = self.devices.get(&device_id) {
if let Some((&nid, port)) = card.ports.get_index(source_pos) {
let identifier = port.identifier.clone();
return cosmic::Task::future(async move {
wpctl_set_default(nid).await;
Message::SetDefaultSource(identifier)
});
}
}
Task::none()
}
}
#[derive(Debug)]
struct Card {
ports: IndexMap<NodeId, CardPort>,
}
#[derive(Debug)]
struct CardPort {
class: pipewire::MediaClass,
identifier: String,
description: String,
}
#[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
pub enum DeviceId {
Alsa(u32),
Bluez5(String),
Unknown(),
}
#[derive(Clone, Debug)]
pub enum Message {
/// Handle messages from the sound server.
Server(Arc<Vec<Server>>),
/// Set the default sink.
SetDefaultSink(String),
/// Set the default source.
SetDefaultSource(String),
/// Change the output volume.
SinkVolumeApply(NodeId),
/// Change the output balance.
SinkBalanceApply,
/// Change the input volume.
SourceVolumeApply(NodeId),
/// On init of the subscription, channels for closing background threads are given to the app.
SubHandle(Arc<SubscriptionHandle>),
}
#[derive(Clone, Debug)]
pub enum Server {
/// Get default sinks/sources and their volumes/mute status.
Pulse(pulse::Event),
/// Get ALSA cards and their profiles.
Pipewire(pipewire::DeviceEvent),
}
pub struct SubscriptionHandle {
cancel_tx: futures::channel::oneshot::Sender<()>,
pipewire: pipewire::Sender<()>,
}
impl std::fmt::Debug for SubscriptionHandle {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str("SubscriptionHandle")
}
}
fn sort_pulse_devices(descriptions: &mut Vec<String>, node_ids: &mut Vec<NodeId>) {
let mut tmp: Vec<(String, NodeId)> = std::mem::take(descriptions)
.into_iter()
.zip(std::mem::take(node_ids))
.collect();
tmp.sort_unstable_by(|(ak, _), (bk, _)| ak.cmp(bk));
(*descriptions, *node_ids) = tmp.into_iter().collect();
}
async fn pactl_set_card_profile(id: String, profile: String) {
tracing::debug!("pactl set-card-profile {id} {profile}");
_ = tokio::process::Command::new("pactl")
.args(["set-card-profile", id.as_str(), profile.as_str()])
.status()
.await
}
async fn wpctl_set_default(id: u32) {
tracing::debug!("wpctl set-default {id}");
let id = id.to_string();
_ = tokio::process::Command::new("wpctl")
.args(["set-default", id.as_str()])
.status()
.await;
}
fn wpctl_set_mute(id: u32, mute: bool) {
tokio::task::spawn(async move {
let default = id.to_string();
_ = tokio::process::Command::new("wpctl")
.args(["set-mute", default.as_str(), if mute { "1" } else { "0" }])
.status()
.await;
});
}
fn wpctl_set_volume(id: u32, volume: u32) {
tokio::task::spawn(async move {
let id = id.to_string();
let volume = format!("{}.{:02}", volume / 100, volume % 100);
_ = tokio::process::Command::new("wpctl")
.args(["set-volume", id.as_str(), volume.as_str()])
.status()
.await;
});
}

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// Copyright 2024 System76 <info@system76.com>
// SPDX-License-Identifier: MPL-2.0
// #![deny(missing_docs)]
pub use pipewire::channel::Sender;
use cosmic::iced_futures::{self, Subscription, stream};
use futures::{SinkExt, executor::block_on};
use pipewire::{
context::Context as PwContext,
main_loop::MainLoop as PwMainLoop,
node::{Node, NodeInfoRef, NodeState},
proxy::{Listener, ProxyT},
types::ObjectType,
};
use std::{
cell::RefCell,
collections::{BTreeMap, HashMap},
rc::Rc,
thread::JoinHandle,
};
pub fn subscription() -> iced_futures::Subscription<DeviceEvent> {
Subscription::run_with_id(
"pipewire",
stream::channel(20, |sender| async {
_ = thread(sender);
futures::future::pending().await
}),
)
}
pub fn thread(
on_event: futures::channel::mpsc::Sender<DeviceEvent>,
) -> (JoinHandle<()>, pipewire::channel::Sender<()>) {
let (pw_tx, pw_rx) = pipewire::channel::channel();
let handle = std::thread::spawn(move || {
devices_from_socket(pw_rx, on_event);
});
(handle, pw_tx)
}
/// Node event`
#[derive(Debug)]
pub enum NodeEvent<'a> {
/// Node info
NodeInfo(u32, &'a NodeInfoRef),
/// Node removal
Remove(u32),
}
/// Device event
#[derive(Clone, Debug)]
pub enum DeviceEvent {
/// A new device was detected.
Add(Device),
/// A device with the given object_id was removed.
Remove(u32),
}
/// Device information
#[must_use]
#[derive(Clone, Debug)]
pub struct Device {
pub object_id: u32,
pub variant: DeviceVariant,
pub media_class: MediaClass,
pub product_name: String,
pub node_name: String,
pub state: DeviceState,
}
#[derive(Clone, Debug, Hash, Eq, PartialEq)]
pub enum DeviceVariant {
Alsa { alsa_card: u32 },
Bluez5 { address: String },
Unknown {},
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum DeviceState {
Idle,
Running,
Creating,
Suspended,
Error(String),
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum MediaClass {
Source,
Sink,
}
impl Device {
/// Attains process info from a pipewire info node.
#[must_use]
pub fn from_node(info: &NodeInfoRef) -> Option<Self> {
let props = info.props()?;
let (variant, product_name) = if let Some(alsa_card) =
props.get("alsa.card").and_then(|v| v.parse::<u32>().ok())
{
let device_profile_description = props.get("device.profile.description")?.to_owned();
let description = props.get("node.description")?;
let description = description
.strip_suffix(&device_profile_description)
.map(str::trim_end)
.unwrap_or(description)
.replace("High Definition Audio", "HD Audio");
(DeviceVariant::Alsa { alsa_card }, description)
} else if let Some(address) = props
.get("api.bluez5.address")
.and_then(|v| v.parse::<String>().ok())
{
(
DeviceVariant::Bluez5 {
address: address.to_owned(),
},
props.get("node.description")?.to_owned(),
)
} else {
(
DeviceVariant::Unknown {},
props.get("node.description")?.to_owned(),
)
};
Some(Device {
object_id: props.get("object.id")?.parse::<u32>().ok()?,
variant,
media_class: match props.get("media.class")? {
"Audio/Sink" => MediaClass::Sink,
"Audio/Source" => MediaClass::Source,
_ => return None,
},
product_name,
node_name: props.get("node.name")?.to_owned(),
state: match info.state() {
NodeState::Idle => DeviceState::Idle,
NodeState::Running => DeviceState::Running,
NodeState::Creating => DeviceState::Creating,
NodeState::Suspended => DeviceState::Suspended,
NodeState::Error(why) => DeviceState::Error(why.to_owned()),
},
})
}
}
/// Monitors the devices from a given ``PipeWire`` socket.
///
/// ``PipeWire`` sockets are found in `/run/user/{{UID}}/pipewire-0`.
pub fn devices_from_socket(
pw_cancel: pipewire::channel::Receiver<()>,
mut on_event: futures::channel::mpsc::Sender<DeviceEvent>,
) {
let mut managed = BTreeMap::new();
let _res = nodes_from_socket(pw_cancel, move |main_loop, event| match event {
NodeEvent::NodeInfo(pw_id, info) => {
if let Some(device) = Device::from_node(info) {
if managed.insert(pw_id, device.object_id).is_none() {
if block_on(on_event.send(DeviceEvent::Add(device))).is_err() {
main_loop.quit();
}
}
}
}
NodeEvent::Remove(pw_id) => {
if let Some(object_id) = managed.remove(&pw_id) {
if block_on(on_event.send(DeviceEvent::Remove(object_id))).is_err() {
main_loop.quit();
}
}
}
});
}
/// Listens to information about nodes, passing that info into a callback.
///
/// # Errors
///
/// Errors if the pipewire connection fails
pub fn nodes_from_socket(
pw_cancel: pipewire::channel::Receiver<()>,
on_event: impl FnMut(&PwMainLoop, NodeEvent) + 'static,
) -> Result<(), Box<dyn std::error::Error>> {
let main_loop = PwMainLoop::new(None)?;
let context = PwContext::new(&main_loop)?;
let core = context.connect(None)?;
// Exit main loop on receivering terminate message.
let _cancel_rx = pw_cancel.attach(main_loop.loop_(), {
let main_loop = main_loop.clone();
move |_| main_loop.quit()
});
let registry = Rc::new(core.get_registry()?);
let registry_weak = Rc::downgrade(&registry);
let proxies = Rc::new(RefCell::new(HashMap::new()));
let on_event = Rc::new(RefCell::new(on_event));
let main_loop_clone = main_loop.clone();
let _registry_listener = registry
.add_listener_local()
.global(move |obj| {
let Some(registry) = registry_weak.upgrade() else {
return;
};
let attached_proxy: Option<(Box<dyn ProxyT>, Box<dyn Listener>)> = match obj.type_ {
ObjectType::Node => {
let Ok(node): Result<Node, _> = registry.bind(obj) else {
return;
};
let on_event_weak = Rc::downgrade(&on_event);
let main_loop = main_loop_clone.clone();
let id = node.upcast_ref().id();
let listener = node
.add_listener_local()
.info(move |info| {
if let Some(on_event) = on_event_weak.upgrade() {
on_event.borrow_mut()(&main_loop, NodeEvent::NodeInfo(id, info));
}
})
.register();
Some((Box::new(node), Box::new(listener)))
}
_ => None,
};
if let Some((proxy_spe, listener)) = attached_proxy {
let proxy = proxy_spe.upcast_ref();
let id = proxy.id();
let (object_type, _object_version) = proxy.get_type();
let proxies_weak = Rc::downgrade(&proxies);
let on_event_weak = Rc::downgrade(&on_event);
let main_loop = main_loop_clone.clone();
let remove_listener = proxy
.add_listener_local()
.removed(move || {
if object_type == ObjectType::Node {
if let Some(on_event) = on_event_weak.upgrade() {
on_event.borrow_mut()(&main_loop, NodeEvent::Remove(id));
}
}
if let Some(proxies) = proxies_weak.upgrade() {
proxies.borrow_mut().remove(&id);
}
})
.register();
proxies
.borrow_mut()
.insert(id, (proxy_spe, listener, remove_listener));
}
})
.register();
main_loop.run();
Ok(())
}

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// Copyright 2024 System76 <info@system76.com>
// SPDX-License-Identifier: MPL-2.0
// Make sure not to fail if pulse not found, and reconnect?
// change to device shouldn't send osd?
use cosmic::iced_futures::{self, Subscription, stream};
use futures::{SinkExt, executor::block_on};
use libpulse_binding::{
callbacks::ListResult,
channelmap::Map,
context::{
Context, FlagSet, State,
introspect::{CardInfo, CardProfileInfo, Introspector, ServerInfo, SinkInfo, SourceInfo},
subscribe::{Facility, InterestMaskSet, Operation},
},
def::{PortAvailable, Retval},
mainloop::{
api::MainloopApi,
events::io::IoEventInternal,
standard::{IterateResult, Mainloop},
},
volume::{ChannelVolumes, Volume},
};
use std::{
borrow::Cow,
cell::{Cell, RefCell},
convert::Infallible,
io::{Read, Write},
os::{
fd::{FromRawFd, IntoRawFd, RawFd},
raw::c_void,
},
rc::Rc,
str::FromStr,
sync::mpsc,
};
pub fn subscription() -> iced_futures::Subscription<Event> {
Subscription::run_with_id(
"pulse",
stream::channel(20, |sender| async {
std::thread::spawn(move || thread(sender));
futures::future::pending().await
}),
)
}
pub fn thread(sender: futures::channel::mpsc::Sender<Event>) {
let Some(mut main_loop) = Mainloop::new() else {
log::error!("Failed to create PA main loop");
return;
};
let Some(mut context) = Context::new(&main_loop, "cosmic-osd") else {
log::error!("Failed to create PA context");
return;
};
let data = Rc::new(Data {
main_loop: RefCell::new(Mainloop {
_inner: Rc::clone(&main_loop._inner),
}),
introspector: context.introspect(),
sink_volume: Cell::new(None),
sink_mute: Cell::new(None),
source_volume: Cell::new(None),
source_mute: Cell::new(None),
default_sink_name: RefCell::new(None),
default_source_name: RefCell::new(None),
sender: RefCell::new(sender.clone()),
});
let data_clone = data.clone();
context.set_subscribe_callback(Some(Box::new(move |facility, operation, index| {
data_clone.subscribe_cb(facility.unwrap(), operation, index);
})));
let _ = context.connect(None, FlagSet::NOFAIL, None);
loop {
if sender.is_closed() {
return;
}
match main_loop.iterate(false) {
IterateResult::Success(_) => {}
IterateResult::Err(_e) => {
return;
}
IterateResult::Quit(_e) => {
return;
}
}
if context.get_state() == State::Ready {
break;
}
}
// Inspect all available cards on startup
data.introspector.get_card_info_list({
let data_weak = Rc::downgrade(&data);
move |card_info_res| {
if let Some(data) = data_weak.upgrade() {
data.card_info_cb(card_info_res)
}
}
});
data.get_server_info();
context.subscribe(
InterestMaskSet::SERVER | InterestMaskSet::SINK | InterestMaskSet::SOURCE,
|_| {},
);
if let Err((err, retval)) = main_loop.run() {
log::error!("PA main loop returned {:?}, error {}", retval, err);
}
}
#[derive(Clone, Debug)]
pub enum Event {
Balance(Option<f32>),
CardInfo(Card),
DefaultSink(String),
DefaultSource(String),
SinkVolume(u32),
Channels(PulseChannels),
SinkMute(bool),
SourceVolume(u32),
SourceMute(bool),
}
enum Request {
Volume(u32, f32),
Balance(u32, f32),
Quit,
}
#[derive(Debug)]
pub struct PulseChannels {
tx: mpsc::Sender<Request>,
pipe_tx: std::fs::File,
index: u32,
}
impl Clone for PulseChannels {
fn clone(&self) -> Self {
Self {
tx: self.tx.clone(),
pipe_tx: self
.pipe_tx
.try_clone()
.expect("failed to clone PulseChannels pipe writer"),
index: self.index,
}
}
}
/// Data used by the [`handle_balance_io_new`] callback.
struct HandleBalanceData(
Context,
ChannelVolumes,
Map,
std::sync::mpsc::Receiver<Request>,
);
/// Callback for creating an IO event source [`MainloopApi::io_new`].
extern "C" fn handle_balance_io_new(
api: *const MainloopApi,
event: *mut IoEventInternal,
reader_fd: RawFd,
_flags: libpulse_binding::mainloop::events::io::FlagSet,
data: *mut c_void,
) {
// Take ownership of the data and borrow its contents.
let mut data = unsafe { Box::<HandleBalanceData>::from_raw(data as _) };
let HandleBalanceData(ctx, volumes, map, rx) = data.as_mut();
// Return early if the context is not ready, and give the data back.
if ctx.get_state() != State::Ready {
let _ = Box::leak(data);
return;
}
// If the first byte cannot be read, destroy this event source with its reader and data.
let mut buf = [0u8; 1];
let mut reader = unsafe { std::fs::File::from_raw_fd(reader_fd) };
if reader.read_exact(&mut buf).is_err() {
(unsafe { &*api })
.io_free
.as_ref()
.expect("io_free function is missing")(event);
return;
}
// Give ownership of the reader back.
_ = reader.into_raw_fd();
while let Ok(req) = rx.try_recv() {
match req {
Request::Volume(index, volume_scale) => {
let mut intro = ctx.introspect();
let new_scale = Volume((volume_scale * Volume::NORMAL.0 as f32).round() as u32);
if let Some(v) = volumes.scale(new_scale) {
_ = intro.set_sink_volume_by_index(
index,
v,
Some(Box::new(|success| {
if !success {
tracing::error!("Failed to set sink balance");
}
})),
);
}
}
Request::Balance(index, new_balance) => {
if map.can_balance() {
if let Some(v) = volumes.set_balance(&map, new_balance) {
let mut intro = ctx.introspect();
_ = intro.set_sink_volume_by_index(
index,
v,
Some(Box::new(|success| {
if !success {
tracing::error!("Failed to set sink balance");
}
})),
);
}
}
}
Request::Quit => unsafe { &*api }
.quit
.as_ref()
.expect("quit function missing")(api, 0),
}
}
let _ = Box::leak(data);
}
impl PulseChannels {
fn new(
volumes: ChannelVolumes,
map: Map,
api: &MainloopApi,
index: u32,
ctx: Context,
) -> PulseChannels {
let (reader, writer) = rustix::pipe::pipe_with(rustix::pipe::PipeFlags::CLOEXEC)
.expect("failed to crate pipe");
let (tx, rx) = mpsc::channel::<Request>();
// Create IO event source object for handling speaker balance.
let event_source = api.io_new.as_ref().unwrap()(
api as *const _,
reader.into_raw_fd(),
libpulse_binding::mainloop::events::io::FlagSet::INPUT,
Some(handle_balance_io_new),
Box::into_raw(Box::new(HandleBalanceData(ctx, volumes, map, rx))) as *mut c_void,
);
if let Some(enable) = api.io_enable.as_ref() {
enable(
event_source,
libpulse_binding::mainloop::events::io::FlagSet::INPUT,
);
}
Self {
tx,
pipe_tx: std::fs::File::from(writer),
index,
}
}
/// Change the active index.
#[inline]
pub fn set_index(&mut self, index: u32) {
self.index = index;
}
/// Set the speaker balance of the active sink.
pub fn set_balance(&mut self, balance: f32) {
if let Err(err) = self.tx.send(Request::Balance(self.index, balance)) {
tracing::error!(?err, "Failed to send new balance to channel");
} else {
self.pipe_tx
.write_all(&[1])
.expect("PulseChannels pipe write failed");
}
}
/// Set the volume of the active sink.
pub fn set_volume(&mut self, volume: f32) {
if let Err(err) = self.tx.send(Request::Volume(self.index, volume)) {
tracing::error!(?err, "Failed to send new volume to channel");
} else {
self.pipe_tx
.write_all(&[1])
.expect("PulseChannels pipe write failed");
}
}
/// Request the pulse thread to quit.
pub fn quit(mut self) {
_ = self.tx.send(Request::Quit);
_ = self.pipe_tx.write_all(&[1]);
}
}
#[derive(Clone, Debug, Hash, Eq, PartialEq)]
pub struct Card {
pub object_id: u32,
pub name: String,
pub product_name: String,
pub variant: DeviceVariant,
pub ports: Vec<CardPort>,
pub profiles: Vec<CardProfile>,
pub active_profile: Option<CardProfile>,
}
#[derive(Clone, Debug, Hash, Eq, PartialEq)]
pub struct CardPort {
pub name: String,
pub description: String,
pub direction: Direction,
pub port_type: PortType,
pub profile_port: u32,
pub priority: u32,
pub profiles: Vec<CardProfile>,
pub availability: Availability,
}
#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum Availability {
Unknown,
No,
Yes,
}
impl From<PortAvailable> for Availability {
fn from(pa: PortAvailable) -> Self {
match pa {
PortAvailable::Unknown => Availability::Unknown,
PortAvailable::No => Availability::No,
PortAvailable::Yes => Availability::Yes,
}
}
}
#[derive(Clone, Debug, Hash, Eq, PartialEq)]
pub struct CardProfile {
pub name: String,
pub description: String,
pub available: bool,
pub n_sinks: u32,
pub n_sources: u32,
pub priority: u32,
}
#[derive(Clone, Debug, Hash, Eq, PartialEq)]
pub enum DeviceVariant {
Alsa { alsa_card: u32 },
Bluez5 { address: String },
}
#[derive(Clone, Debug, Hash, Eq, PartialEq)]
pub enum Direction {
Input,
Output,
Both,
}
#[derive(Default, Clone, Debug, Hash, Eq, PartialEq)]
pub enum PortType {
Mic,
Speaker,
Headphones,
Headset,
Digital,
#[default]
Unknown,
}
impl FromStr for PortType {
type Err = Infallible;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"mic" => Ok(PortType::Mic),
"speaker" => Ok(PortType::Speaker),
"headphones" => Ok(PortType::Headphones),
"headset" => Ok(PortType::Headset),
"digital" => Ok(PortType::Digital),
_ => Ok(PortType::Unknown),
}
}
}
struct Data {
main_loop: RefCell<Mainloop>,
default_sink_name: RefCell<Option<String>>,
default_source_name: RefCell<Option<String>>,
sink_volume: Cell<Option<u32>>,
sink_mute: Cell<Option<bool>>,
source_volume: Cell<Option<u32>>,
source_mute: Cell<Option<bool>>,
introspector: Introspector,
sender: RefCell<futures::channel::mpsc::Sender<Event>>,
}
impl Data {
fn card_info_cb(self: &Rc<Self>, card_info: ListResult<&CardInfo>) {
if let ListResult::Item(card_info) = card_info {
let Some(object_id) = card_info
.proplist
.get_str("object.id")
.and_then(|v| v.parse::<u32>().ok())
else {
return;
};
let variant = if let Some(alsa_card) = card_info
.proplist
.get_str("alsa.card")
.and_then(|v| v.parse::<u32>().ok())
{
DeviceVariant::Alsa { alsa_card }
} else if let Some(address) = card_info.proplist.get_str("api.bluez5.address") {
DeviceVariant::Bluez5 { address }
} else {
return;
};
let card = Card {
name: card_info
.name
.as_ref()
.map(Cow::to_string)
.unwrap_or_default(),
product_name: card_info
.proplist
.get_str("device.product.name")
.unwrap_or_default(),
object_id,
variant,
ports: card_info
.ports
.iter()
.map(|port| CardPort {
name: port.name.as_ref().map(Cow::to_string).unwrap_or_default(),
description: port
.description
.as_ref()
.map(Cow::to_string)
.unwrap_or_default(),
direction: match port.direction.bits() {
x if x == libpulse_binding::direction::FlagSet::INPUT.bits() => {
Direction::Input
}
x if x == libpulse_binding::direction::FlagSet::OUTPUT.bits() => {
Direction::Output
}
_ => Direction::Both,
},
port_type: port
.proplist
.get_str("port.type")
.as_deref()
.map(|s| PortType::from_str(s).unwrap())
.unwrap_or_default(),
profile_port: port
.proplist
.get_str("card.profile.port")
.and_then(|v| v.parse::<u32>().ok())
.unwrap_or(0),
priority: port.priority,
profiles: collect_profiles(&port.profiles),
availability: port.available.into(),
})
.collect(),
profiles: collect_profiles(&card_info.profiles),
active_profile: card_info.active_profile.as_deref().map(CardProfile::from),
};
if block_on(self.sender.borrow_mut().send(Event::CardInfo(card))).is_err() {
self.main_loop.borrow_mut().quit(Retval(0));
}
}
}
fn server_info_cb(self: &Rc<Self>, server_info: &ServerInfo) {
let new_default_sink_name = server_info
.default_sink_name
.as_ref()
.map(|x| x.clone().into_owned());
let mut default_sink_name = self.default_sink_name.borrow_mut();
if new_default_sink_name != *default_sink_name {
if let Some(name) = &new_default_sink_name {
_ = block_on(
self.sender
.borrow_mut()
.send(Event::DefaultSink(name.clone())),
);
self.get_sink_info_by_name(name);
}
*default_sink_name = new_default_sink_name;
}
let new_default_source_name = server_info
.default_source_name
.as_ref()
.map(|x| x.clone().into_owned());
let mut default_source_name = self.default_source_name.borrow_mut();
if new_default_source_name != *default_source_name {
if let Some(name) = &new_default_source_name {
_ = block_on(
self.sender
.borrow_mut()
.send(Event::DefaultSource(name.clone())),
);
self.get_source_info_by_name(name);
}
*default_source_name = new_default_source_name;
}
}
fn get_server_info(self: &Rc<Self>) {
let data = self.clone();
self.introspector
.get_server_info(move |server_info| data.server_info_cb(server_info));
}
fn sink_info_cb(&self, sink_info_res: ListResult<&SinkInfo>) {
if let ListResult::Item(sink_info) = sink_info_res {
if sink_info.name.as_deref() != self.default_sink_name.borrow().as_deref() {
return;
}
let balance = (sink_info.channel_map.can_balance()
&& sink_info.base_volume.is_normal())
.then(|| sink_info.volume.get_balance(&sink_info.channel_map));
let volume = sink_info.volume.max().0 / (Volume::NORMAL.0 / 100);
if self.sink_mute.get() != Some(sink_info.mute) {
self.sink_mute.set(Some(sink_info.mute));
if block_on(
self.sender
.borrow_mut()
.send(Event::SinkMute(sink_info.mute)),
)
.is_err()
{
self.main_loop.borrow_mut().quit(Retval(0));
}
}
if self.sink_volume.get() != Some(volume) {
self.sink_volume.set(Some(volume));
if block_on(self.sender.borrow_mut().send(Event::SinkVolume(volume))).is_err() {
self.main_loop.borrow_mut().quit(Retval(0));
}
}
if block_on(self.sender.borrow_mut().send(Event::Balance(balance))).is_err() {
self.main_loop.borrow_mut().quit(Retval(0));
}
let mut main_loop = self.main_loop.borrow_mut();
let api = main_loop.get_api();
if let Some(mut ctx) = Context::new(&*main_loop, "balance") {
let _ = ctx.connect(None, FlagSet::NOFAIL, None);
let channels = PulseChannels::new(
sink_info.volume,
sink_info.channel_map,
api,
sink_info.index,
ctx,
);
if block_on(self.sender.borrow_mut().send(Event::Channels(channels))).is_err() {
main_loop.quit(Retval(0));
}
}
}
}
fn source_info_cb(&self, source_info_res: ListResult<&SourceInfo>) {
if let ListResult::Item(source_info) = source_info_res {
if source_info.name.as_deref() != self.default_source_name.borrow().as_deref() {
return;
}
let volume = source_info.volume.max().0 / (Volume::NORMAL.0 / 100);
if self.source_mute.get() != Some(source_info.mute) {
self.source_mute.set(Some(source_info.mute));
if block_on(
self.sender
.borrow_mut()
.send(Event::SourceMute(source_info.mute)),
)
.is_err()
{
self.main_loop.borrow_mut().quit(Retval(0));
}
}
if self.source_volume.get() != Some(volume) {
self.source_volume.set(Some(volume));
if block_on(self.sender.borrow_mut().send(Event::SourceVolume(volume))).is_err() {
self.main_loop.borrow_mut().quit(Retval(0));
}
}
}
}
fn get_card_info_by_index(self: &Rc<Self>, index: u32) {
let data = self.clone();
self.introspector
.get_card_info_by_index(index, move |card_info_res| {
data.card_info_cb(card_info_res);
});
}
fn get_sink_info_by_index(self: &Rc<Self>, index: u32) {
let data = self.clone();
self.introspector.get_sink_info_by_index(
index,
move |sink_info_res: ListResult<&SinkInfo<'_>>| {
if let ListResult::Item(ref info) = sink_info_res {
if let Some(card_index) = info.card {
let data_clone = data.clone();
data.introspector.get_card_info_by_index(
card_index,
move |card_info_res| {
data_clone.card_info_cb(card_info_res);
},
);
}
}
data.sink_info_cb(sink_info_res);
},
);
}
fn get_sink_info_by_name(self: &Rc<Self>, name: &str) {
let data = self.clone();
self.introspector
.get_sink_info_by_name(name, move |sink_info_res| {
if let ListResult::Item(ref info) = sink_info_res {
if let Some(card_index) = info.card {
let data_clone = data.clone();
data.introspector.get_card_info_by_index(
card_index,
move |card_info_res| {
data_clone.card_info_cb(card_info_res);
},
);
}
}
data.sink_info_cb(sink_info_res);
});
}
fn get_source_info_by_index(self: &Rc<Self>, index: u32) {
let data = self.clone();
self.introspector
.get_source_info_by_index(index, move |source_info_res| {
if let ListResult::Item(ref info) = source_info_res {
if let Some(card_index) = info.card {
let data_clone = data.clone();
data.introspector.get_card_info_by_index(
card_index,
move |card_info_res| {
data_clone.card_info_cb(card_info_res);
},
);
}
}
data.source_info_cb(source_info_res);
});
}
fn get_source_info_by_name(self: &Rc<Self>, name: &str) {
let data = self.clone();
self.introspector
.get_source_info_by_name(name, move |source_info_res| {
if let ListResult::Item(ref info) = source_info_res {
if let Some(card_index) = info.card {
let data_clone = data.clone();
data.introspector.get_card_info_by_index(
card_index,
move |card_info_res| {
data_clone.card_info_cb(card_info_res);
},
);
}
}
data.source_info_cb(source_info_res);
});
}
fn subscribe_cb(
self: &Rc<Self>,
facility: Facility,
_operation: Option<Operation>,
index: u32,
) {
match facility {
Facility::Server => {
self.get_server_info();
}
Facility::Sink => {
self.get_sink_info_by_index(index);
}
Facility::Source => {
self.get_source_info_by_index(index);
}
Facility::Card => {
self.get_card_info_by_index(index);
}
_ => {}
}
}
}
fn collect_profiles(profiles: &[CardProfileInfo]) -> Vec<CardProfile> {
profiles.iter().map(CardProfile::from).collect()
}
impl From<&CardProfileInfo<'_>> for CardProfile {
fn from(profile: &CardProfileInfo) -> Self {
CardProfile {
name: profile
.name
.as_ref()
.map(Cow::to_string)
.unwrap_or_default(),
description: profile
.description
.as_ref()
.map(Cow::to_string)
.unwrap_or_default(),
available: profile.available,
n_sinks: profile.n_sinks,
n_sources: profile.n_sources,
priority: profile.priority,
}
}
}