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|
// This file tracks sleek's copy in `android/src` closely enough that a fix can
// be moved between the two by eye, so it is deliberately not idiomatised to
// this workspace's clippy settings. The lints below are the ones that would
// rewrite it away from its original; everything else still applies.
#![allow(
clippy::chunks_exact_to_as_chunks,
clippy::identity_op,
clippy::manual_filter,
clippy::manual_is_multiple_of,
clippy::redundant_closure,
clippy::too_many_arguments,
clippy::unnecessary_sort_by
)]
//! Native MoQ media plane for freeq AV calls.
//!
//! Publishes mic Opus (+ optional camera H.264) to the SFU and plays remote
//! audio/video via `iroh-live` + `moq-native` — same stack as freeq-av /
//! freeq-sdk-ffi.
//!
//! Android: mic/speaker via cpal aaudio; local camera via Camera2
//! (`CameraCapture` Java helper in APK `classes.dex`) pushing NV12 into a
//! [`VideoSource`]. Remote H.264 decodes in-software (or MediaCodec when
//! available) when peers publish video.
use std::sync::atomic::{AtomicBool, AtomicU64, Ordering};
use std::sync::Arc;
use anyhow::{Context, Result};
use iroh_live::media::{
audio_backend::AudioBackend,
codec::{AudioCodec, VideoCodec},
format::{AudioPreset, VideoPreset},
publish::LocalBroadcast,
subscribe::RemoteBroadcast,
traits::VideoSource,
};
use tokio::sync::{mpsc, oneshot, watch};
use crate::av::{
broadcast_path, path_key, should_tap, MicLevel, VideoFrameStore, LOCAL_PREVIEW_KEY,
};
#[cfg(not(target_os = "android"))]
use iroh_live::media::{
audio_backend::{AudioBackendOpts, DeviceId},
capture::{CameraCapturer, CameraConfig, CameraSelector},
};
// ── Device enumeration (desktop) ───────────────────────────────────────────
/// One selectable capture/playback device for the UI.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MediaDevice {
/// Stable-ish key stored in prefs (`CameraInfo.id` or audio device name).
pub id: String,
/// Human label for combo boxes.
pub name: String,
pub is_default: bool,
}
/// Heuristic: virtual / loopback cameras (prefer real USB cams when falling back).
fn is_virtual_camera(name: &str, id: &str) -> bool {
let s = format!("{name} {id}").to_ascii_lowercase();
s.contains("virtual")
|| s.contains("obs")
|| s.contains("loopback")
|| s.contains("dummy")
|| s.contains("v4l2loopback")
}
/// List cameras. Hardware first; virtual (OBS/loopback) last on desktop.
/// On Android, front-facing cameras are listed first.
pub fn list_cameras() -> Vec<MediaDevice> {
#[cfg(not(target_os = "android"))]
{
match CameraCapturer::list() {
Ok(mut cams) => {
cams.sort_by(|a, b| {
let av = is_virtual_camera(&a.name, &a.id);
let bv = is_virtual_camera(&b.name, &b.id);
av.cmp(&bv)
.then_with(|| a.name.to_lowercase().cmp(&b.name.to_lowercase()))
});
cams.into_iter()
.map(|c| {
let label = if c.id.is_empty() || c.id == c.name {
c.name.clone()
} else {
format!("{} · {}", c.name, c.id)
};
MediaDevice {
id: c.id,
name: label,
is_default: false,
}
})
.collect()
}
Err(e) => {
log::debug!("av-media: list cameras: {e}");
Vec::new()
}
}
}
#[cfg(target_os = "android")]
{
crate::android_camera::list_cameras()
.into_iter()
.enumerate()
.map(|(i, (id, name))| MediaDevice {
id,
name,
is_default: i == 0,
})
.collect()
}
}
/// ALSA plugin / exclusive-card names that fight PipeWire (dmix slave busy, or
/// exclusive `hw`/`sysdefault:CARD=` while WirePlumber already owns the card).
/// Prefer the native PipeWire host (or ALSA `pipewire` PCM) instead.
fn is_alsa_virtual_pcm(name: &str) -> bool {
let n = name.trim();
// Bare plugins.
if matches!(
n,
"sysdefault"
| "default"
| "dmix"
| "dsnoop"
| "hw"
| "plughw"
| "null"
| "pulse"
| "jack"
| "upmix"
| "vdownmix"
| "surround21"
| "surround40"
| "surround41"
| "surround50"
| "surround51"
| "surround71"
// ALSA→PipeWire bridge name; use system default / native PW host.
| "pipewire"
) {
return true;
}
// Card-qualified exclusive ALSA paths (e.g. sysdefault:CARD=C960 for EMEET).
// Opening these bypasses PipeWire and fails when PW/OBS already hold the card.
n.starts_with("sysdefault:")
|| n.starts_with("default:")
|| n.starts_with("dmix:")
|| n.starts_with("dsnoop:")
|| n.starts_with("front:")
|| n.starts_with("rear:")
|| n.starts_with("center_lfe:")
|| n.starts_with("side:")
|| n.starts_with("hw:")
|| n.starts_with("plughw:")
|| n.starts_with("surround")
|| n.starts_with("iec958:")
|| n.starts_with("hdmi:")
}
/// Drop persisted mic/speaker ids that are known-broken or redundant under
/// PipeWire so the UI shows "System default" (OS default source/sink — same as
/// the browser: currently the EMEET SmartCam mic when that is the default).
pub fn sanitize_audio_device_pref(id: Option<String>) -> Option<String> {
id.filter(|s| !s.is_empty()).and_then(|s| {
if is_alsa_virtual_pcm(&s) {
None
} else {
Some(s)
}
})
}
/// Prefer the native PipeWire host when available (lists real sources like
/// "EMEET SmartCam C960 Mono" the same way Chromium does).
#[cfg(not(target_os = "android"))]
fn preferred_audio_host() -> Option<String> {
let hosts = AudioBackend::available_hosts();
if hosts.iter().any(|h| h.eq_ignore_ascii_case("pipewire")) {
Some("PipeWire".into())
} else {
None
}
}
/// Sort for UI: system default first, then remaining real devices.
#[cfg(not(target_os = "android"))]
fn rank_audio_device(name: &str, is_default: bool) -> (u8, String) {
let n = name.to_ascii_lowercase();
let rank = if is_default {
0
} else if is_alsa_virtual_pcm(name) {
9
} else {
5
};
(rank, n)
}
/// Names that are cpal PipeWire placeholders, stream monitors, or sinks
/// mis-listed as capture (Duplex sinks show up as inputs).
fn is_junk_capture_name(name: &str) -> bool {
let n = name.trim().to_ascii_lowercase();
if n.is_empty() || n == "unknown" {
return true;
}
matches!(
n.as_str(),
"default_input"
| "default_output"
| "default_sink"
| "sink_default"
| "input_default"
| "output_default"
) || n.starts_with("alsa_output.")
|| n.contains("monitor of")
}
#[cfg(not(target_os = "android"))]
fn map_audio_devices(
raw: impl IntoIterator<Item = iroh_live::media::audio_backend::AudioDevice>,
inputs: bool,
) -> Vec<MediaDevice> {
let mut devices: Vec<MediaDevice> = raw
.into_iter()
.filter(|d| !is_alsa_virtual_pcm(&d.name))
.filter(|d| !is_junk_capture_name(&d.name))
// Prefer unique names (cpal PW can list the same nick twice).
.map(|d| MediaDevice {
id: d.name.clone(),
name: if d.is_default {
format!("{} (system default)", d.name)
} else {
d.name
},
is_default: d.is_default,
})
.collect();
// Dedupe by id, keep first (defaults sorted later).
let mut seen = std::collections::HashSet::new();
devices.retain(|d| seen.insert(d.id.clone()));
devices.sort_by(|a, b| {
rank_audio_device(&a.id, a.is_default).cmp(&rank_audio_device(&b.id, b.is_default))
});
let _ = inputs;
devices
}
/// List microphones.
pub fn list_microphones() -> Vec<MediaDevice> {
#[cfg(not(target_os = "android"))]
{
map_audio_devices(AudioBackend::list_inputs(), true)
}
#[cfg(target_os = "android")]
{
Vec::new()
}
}
/// List speakers / output devices.
pub fn list_speakers() -> Vec<MediaDevice> {
#[cfg(not(target_os = "android"))]
{
map_audio_devices(AudioBackend::list_outputs(), false)
}
#[cfg(target_os = "android")]
{
Vec::new()
}
}
#[cfg(not(target_os = "android"))]
fn resolve_audio_device_id(name: Option<&str>, inputs: bool) -> Option<DeviceId> {
let name = name.filter(|s| !s.is_empty())?;
// ALSA virtual / exclusive PCMs (incl. bare "pipewire") → system default so
// moq-media uses the native PipeWire host default (same as the browser).
if is_alsa_virtual_pcm(name) {
log::info!(
"av-media: preferred audio {name:?} is an ALSA bridge/virtual PCM; \
using system default (PipeWire when available)"
);
return None;
}
let list = if inputs {
AudioBackend::list_inputs()
} else {
AudioBackend::list_outputs()
};
// Exact name first (avoid "default" substring matches), then case-insensitive
// contains so "EMEET" matches "EMEET SmartCam C960 Mono". Skip junk/sinks.
let name_l = name.to_ascii_lowercase();
let usable: Vec<_> = list
.into_iter()
.filter(|d| !is_alsa_virtual_pcm(&d.name) && !is_junk_capture_name(&d.name))
.collect();
usable
.iter()
.find(|d| d.name == name)
.or_else(|| {
usable
.iter()
.find(|d| d.name.to_ascii_lowercase() == name_l)
})
.or_else(|| {
usable
.iter()
.find(|d| d.name.to_ascii_lowercase().contains(&name_l))
})
.map(|d| d.id.clone())
}
// ── Config / session ───────────────────────────────────────────────────────
#[derive(Clone)]
pub struct AvMediaConfig {
pub sfu_url: url::Url,
pub session_id: String,
pub nick: String,
pub instance: String,
/// Initial mic mute (pre-call preference).
pub muted: bool,
/// Initial speaker mute — remote playback volume 0 (pre-call preference).
pub speaker_muted: bool,
/// Initial camera publish when hardware is available.
pub camera_enabled: bool,
/// Preferred camera id (`CameraInfo.id` / name). `None` = first available.
pub camera_id: Option<String>,
/// Preferred mic name. `None` = system default.
pub mic_id: Option<String>,
/// Preferred speaker name. `None` = system default.
pub speaker_id: Option<String>,
}
/// Runtime controls from the UI thread (device switches, mute, camera).
#[derive(Debug, Clone)]
pub enum MediaControl {
SetMuted(bool),
/// Mute / unmute remote audio playback (speaker).
SetSpeakerMuted(bool),
SetCameraEnabled(bool),
/// Re-open camera by id (`None` = default / first).
SetCameraDevice(Option<String>),
/// Switch mic by display name (`None` = system default).
SetMicDevice(Option<String>),
/// Switch speaker by display name (`None` = system default).
SetSpeakerDevice(Option<String>),
}
/// Status updates from the media task.
#[derive(Debug, Clone)]
pub enum AvMediaUpdate {
/// MoQ connected and publishing. `has_camera` is true when a capture
/// device is available for this call (opened now, or listable so the
/// user can turn the camera on later without holding the device).
Live {
video: VideoFrameStore,
has_camera: bool,
/// Live mic level (0..=1) written by the capture path.
mic_level: MicLevel,
/// True when a real capture device is feeding the Opus track.
/// False = listen-only / silence publish (still advertises audio).
has_mic: bool,
},
/// Session ended cleanly (stop / transport closed).
Ended,
/// Connect or runtime failure.
Failed(String),
}
/// Background handle: drop or send on `stop` to tear down the MoQ session.
pub struct AvMediaSession {
stop: Option<oneshot::Sender<()>>,
control: Option<mpsc::UnboundedSender<MediaControl>>,
pub muted: Arc<AtomicBool>,
pub speaker_muted: Arc<AtomicBool>,
pub camera_enabled: Arc<AtomicBool>,
pub video: VideoFrameStore,
pub mic_level: MicLevel,
task: Option<tokio::task::JoinHandle<()>>,
abort: Option<tokio::task::AbortHandle>,
}
impl AvMediaSession {
pub fn start<F>(config: AvMediaConfig, on_status: F) -> Self
where
F: Fn(AvMediaUpdate) + Send + Sync + 'static,
{
let muted = Arc::new(AtomicBool::new(config.muted));
let speaker_muted = Arc::new(AtomicBool::new(config.speaker_muted));
// Respect pre-call camera pref; has_camera is reported after open.
let camera_enabled = Arc::new(AtomicBool::new(config.camera_enabled));
let video = VideoFrameStore::new();
let mic_level = MicLevel::new();
let (stop_tx, stop_rx) = oneshot::channel();
let (ctrl_tx, ctrl_rx) = mpsc::unbounded_channel();
let muted_task = muted.clone();
let camera_task = camera_enabled.clone();
let video_task = video.clone();
let mic_level_task = mic_level.clone();
let on_status = Arc::new(on_status);
let task = tokio::spawn(async move {
match run_media(
config,
muted_task,
camera_task,
video_task,
mic_level_task,
stop_rx,
ctrl_rx,
on_status.clone(),
)
.await
{
Ok(()) => on_status(AvMediaUpdate::Ended),
Err(e) => on_status(AvMediaUpdate::Failed(e.to_string())),
}
});
let abort = task.abort_handle();
Self {
stop: Some(stop_tx),
control: Some(ctrl_tx),
muted,
speaker_muted,
camera_enabled,
video,
mic_level,
task: Some(task),
abort: Some(abort),
}
}
pub fn set_muted(&self, muted: bool) {
self.muted.store(muted, Ordering::Relaxed);
if let Some(tx) = &self.control {
let _ = tx.send(MediaControl::SetMuted(muted));
}
}
pub fn set_speaker_muted(&self, muted: bool) {
self.speaker_muted.store(muted, Ordering::Relaxed);
if let Some(tx) = &self.control {
let _ = tx.send(MediaControl::SetSpeakerMuted(muted));
}
}
pub fn set_camera_enabled(&self, enabled: bool) {
self.camera_enabled.store(enabled, Ordering::Relaxed);
if let Some(tx) = &self.control {
let _ = tx.send(MediaControl::SetCameraEnabled(enabled));
}
}
pub fn set_camera_device(&self, id: Option<String>) {
if let Some(tx) = &self.control {
let _ = tx.send(MediaControl::SetCameraDevice(id));
}
}
pub fn set_mic_device(&self, id: Option<String>) {
if let Some(tx) = &self.control {
let _ = tx.send(MediaControl::SetMicDevice(id));
}
}
pub fn set_speaker_device(&self, id: Option<String>) {
if let Some(tx) = &self.control {
let _ = tx.send(MediaControl::SetSpeakerDevice(id));
}
}
/// Request a clean stop (unpublish MoQ, drop audio devices). Prefer
/// [`Self::stop_and_wait`] from async code so the task can finish teardown.
pub fn request_stop(&mut self) {
if let Some(tx) = self.stop.take() {
let _ = tx.send(());
}
self.control.take();
}
/// Soft-stop then wait up to `timeout` for the media task to exit.
/// Hard-aborts only if the task is still stuck — immediate abort skips
/// MoQ unpublish and leaves **zombie broadcasts** on the SFU that peers
/// may subscribe to (they see you online but hear silence).
pub async fn stop_and_wait(&mut self, timeout: std::time::Duration) {
self.request_stop();
if let Some(task) = self.task.take() {
match tokio::time::timeout(timeout, task).await {
Ok(Ok(())) => log::info!("av-media: session task exited cleanly"),
Ok(Err(e)) if e.is_cancelled() => {
log::debug!("av-media: session task cancelled");
}
Ok(Err(e)) => log::warn!("av-media: session task join: {e}"),
Err(_) => {
log::warn!(
"av-media: session task still running after {timeout:?}; aborting \
(may leave a brief SFU ghost)"
);
if let Some(a) = self.abort.take() {
a.abort();
}
}
}
}
self.abort.take();
// Do not clear `video` here — the UI may still be painting the last
// frames from this Arc while MoQ re-dials. Call end uses clear_av_media.
self.mic_level.clear();
}
/// Sync stop for Drop / non-async callers. Soft-stop + abort (best-effort).
pub fn stop(&mut self) {
self.request_stop();
if let Some(task) = self.task.take() {
task.abort();
}
self.abort.take();
// Keep last frames for reconnect UI; see stop_and_wait.
self.mic_level.clear();
}
}
impl Drop for AvMediaSession {
fn drop(&mut self) {
self.stop();
}
}
async fn run_media(
config: AvMediaConfig,
muted: Arc<AtomicBool>,
camera_enabled: Arc<AtomicBool>,
video_store: VideoFrameStore,
mic_level: MicLevel,
mut stop: oneshot::Receiver<()>,
mut control: mpsc::UnboundedReceiver<MediaControl>,
on_status: Arc<dyn Fn(AvMediaUpdate) + Send + Sync>,
) -> Result<()> {
// Watch so each remote audio track can react instantly to speaker mute.
let (speaker_mute_tx, speaker_mute_rx) = watch::channel(config.speaker_muted);
let _ = rustls::crypto::aws_lc_rs::default_provider().install_default();
let our_broadcast = broadcast_path(&config.session_id, &config.nick, &config.instance);
log::info!("av-media: dialing {} as {our_broadcast}", config.sfu_url);
let mut client_config = moq_native::ClientConfig::default();
client_config.tls.disable_verify = Some(true);
client_config.backend = Some(moq_native::QuicBackend::Noq);
let client = client_config.init().context("moq client init")?;
let broadcast = LocalBroadcast::new();
#[cfg(not(target_os = "android"))]
let audio_backend = {
let host = preferred_audio_host();
let input_device = resolve_audio_device_id(config.mic_id.as_deref(), true);
let output_device = resolve_audio_device_id(config.speaker_id.as_deref(), false);
// Log what the OS thinks is available (helps confirm EMEET vs built-in).
let inputs = list_microphones();
let outputs = list_speakers();
log::info!(
"av-media: audio host={host:?} mic_pref={:?} → pinned={} | \
speaker_pref={:?} → pinned={}",
config.mic_id,
input_device.is_some(),
config.speaker_id,
output_device.is_some()
);
if !inputs.is_empty() {
log::info!(
"av-media: microphones: {}",
inputs
.iter()
.map(|d| {
if d.is_default {
format!("*{}", d.id)
} else {
d.id.clone()
}
})
.collect::<Vec<_>>()
.join(", ")
);
}
if !outputs.is_empty() {
log::info!(
"av-media: speakers: {}",
outputs
.iter()
.map(|d| {
if d.is_default {
format!("*{}", d.id)
} else {
d.id.clone()
}
})
.collect::<Vec<_>>()
.join(", ")
);
}
let ab = AudioBackend::new(AudioBackendOpts {
host,
input_device,
output_device,
..Default::default()
});
ab.set_aec_enabled(false);
ab
};
#[cfg(target_os = "android")]
let audio_backend = {
let ab = AudioBackend::default();
ab.set_aec_enabled(false);
ab
};
// Always publish an Opus track so peers see audio in the catalog.
// Real mic when available; otherwise silence (listen-only). Prefer
// falling back to the system default when a preferred device fails —
// never leave the broadcast without audio (that looks like "not sending").
log::info!(
"av-media: outbound muted={} speaker_muted={} (peers hear silence while mic-muted; \
we hear silence while speaker-muted)",
muted.load(Ordering::Relaxed),
*speaker_mute_rx.borrow()
);
let has_mic = match open_microphone(&audio_backend).await {
Ok(mut mic) => {
// Warm-up: wait until the capture ring actually has energy so we
// don't advertise "mic open" while still InputNotReady→silence.
let peak = warm_up_mic(&mut *mic, std::time::Duration::from_millis(800));
log::info!("av-media: mic warm-up peak={peak:.4} (0 = capture silent / not ready)");
if peak < 1e-5 {
log::warn!(
"av-media: microphone opened but capture is silent so far — \
check PipeWire default source (EMEET), mute, and that OBS isn't \
exclusive; peers will hear silence until samples flow"
);
}
let muteable = MuteableSource {
inner: mic,
muted: muted.clone(),
level: mic_level.clone(),
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
};
match broadcast
.audio()
.set(muteable, AudioCodec::Opus, [AudioPreset::Hq])
{
Ok(()) => {
log::info!("av-media: microphone open, publishing Opus");
true
}
Err(e) => {
log::warn!("av-media: set mic audio source failed: {e}; publishing silence");
muted.store(true, Ordering::Relaxed);
if let Err(e2) = broadcast.audio().set(
MuteableSource::silence(muted.clone(), mic_level.clone()),
AudioCodec::Opus,
[AudioPreset::Hq],
) {
log::error!("av-media: silence audio set also failed: {e2}");
}
false
}
}
}
Err(e) => {
log::warn!("av-media: no microphone ({e}); publishing silence (listen-only)");
muted.store(true, Ordering::Relaxed);
if let Err(e2) = broadcast.audio().set(
MuteableSource::silence(muted.clone(), mic_level.clone()),
AudioCodec::Opus,
[AudioPreset::Hq],
) {
log::error!("av-media: silence audio set failed: {e2}");
}
false
}
};
if !has_mic {
log::info!("av-media: outbound audio is silence (listen-only / no capture)");
}
// Local-preview frame counter (diagnostics).
let local_frame_count = Arc::new(AtomicU64::new(0));
// Camera: desktop V4L2 / platform capture; Android Camera2 → NV12 push source.
// Only claim hardware while publish is on — soft-gating alone keeps STREAMON /
// Camera2 repeating and lights the privacy LED even when the UI says off.
let mut preferred_camera_id = config.camera_id.clone();
let devices_present = camera_devices_present();
log::info!(
"av-media: camera_enabled={} preferred_id={:?} devices_present={devices_present}",
camera_enabled.load(Ordering::Relaxed),
preferred_camera_id
);
#[cfg(target_os = "android")]
let mut android_camera_guard: Option<crate::android_camera::CameraCaptureGuard> = None;
let mut preview_keepalive = None;
let mut preview_pump: Option<std::thread::JoinHandle<()>> = None;
let mut camera_open = false;
let has_camera = if should_claim_camera_hardware(config.camera_enabled) {
#[cfg(not(target_os = "android"))]
{
match attach_desktop_camera(
preferred_camera_id.as_deref(),
&broadcast,
camera_enabled.clone(),
video_store.clone(),
local_frame_count.clone(),
) {
Ok(opened_id) => {
if let Some(id) = opened_id {
preferred_camera_id = Some(id);
}
camera_enabled.store(true, Ordering::Relaxed);
preview_keepalive = hold_preview_keepalive(&broadcast);
preview_pump = spawn_local_preview_pump(
&broadcast,
video_store.clone(),
camera_enabled.clone(),
);
camera_open = true;
true
}
Err(e) => {
log::warn!("av-media: no camera ({e}); audio-only");
camera_enabled.store(false, Ordering::Relaxed);
// Keep the in-call toggle when devices still enumerate
// (busy / transient open failure).
camera_devices_present()
}
}
}
#[cfg(target_os = "android")]
{
match open_android_camera(
preferred_camera_id.as_deref(),
&broadcast,
camera_enabled.clone(),
video_store.clone(),
local_frame_count.clone(),
true,
) {
Ok(guard) => {
android_camera_guard = Some(guard);
preview_keepalive = hold_preview_keepalive(&broadcast);
preview_pump = spawn_local_preview_pump(
&broadcast,
video_store.clone(),
camera_enabled.clone(),
);
camera_open = true;
true
}
Err(e) => {
log::warn!("av-media: Android camera unavailable ({e}); audio-only");
camera_enabled.store(false, Ordering::Relaxed);
// Permission race / busy: still report devices so the
// in-call toggle can retry after CAMERA is granted.
camera_devices_present()
}
}
}
} else {
// Pref off: leave the device closed so the privacy light stays dark.
// Still report availability when cameras enumerate so the in-call
// toggle remains usable.
camera_enabled.store(false, Ordering::Relaxed);
if devices_present {
log::info!(
"av-media: camera present but publish off — device left closed \
(privacy light off until camera is turned on)"
);
} else {
log::info!("av-media: no cameras listed; audio-only");
}
devices_present
};
let mut has_camera = has_camera;
let _ = &mut preview_keepalive;
let origin = moq_lite::Origin::random().produce();
origin.publish_broadcast(&our_broadcast, broadcast.consume());
let sub_origin = moq_lite::Origin::random().produce();
let mut sub_consumer = sub_origin.consume();
let session_handle = client
.with_publish(origin.consume())
.with_consume(sub_origin)
.connect(config.sfu_url.clone())
.await
.context("MoQ connect")?;
log::info!(
"av-media: MoQ connected, publishing {our_broadcast} has_mic={has_mic} has_camera={has_camera}"
);
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera,
mic_level: mic_level.clone(),
has_mic,
});
let audio_for_playback = audio_backend.clone();
let session_id = config.session_id.clone();
let my_nick = config.nick.clone();
let our_name = our_broadcast.clone();
let store_for_subs = video_store.clone();
// JoinSet so leave/stop aborts every remote tap (orphan spawns used to leak
// AudioBackend + PipeWire streams across calls).
let mut taps: tokio::task::JoinSet<()> = tokio::task::JoinSet::new();
let mut tap_keys: std::collections::HashMap<String, tokio::task::AbortHandle> =
std::collections::HashMap::new();
// Keep broadcast + audio_backend alive for mid-call device switches.
let _broadcast = broadcast;
let audio_backend_ctrl = audio_backend;
loop {
tokio::select! {
res = session_handle.closed() => {
if let Err(e) = res {
log::info!("av-media: session closed: {e}");
} else {
log::info!("av-media: session closed cleanly");
}
break;
}
_ = &mut stop => {
log::info!("av-media: stop requested");
break;
}
announce = sub_consumer.announced() => {
let Some((path, announce)) = announce else {
log::info!("av-media: announce stream ended");
break;
};
match announce {
Some(broadcast_consumer) => {
let path_str = path.to_string();
if !should_tap(&path_str, &session_id, &our_name, &my_nick) {
continue;
}
// Replace any prior tap for this path.
if let Some(h) = tap_keys.remove(&path_str) {
h.abort();
}
log::info!("av-media: + remote {path_str}");
let ab = audio_for_playback.clone();
let ps = path_str.clone();
let store = store_for_subs.clone();
let key = path_key(&path_str).to_string();
let spk_mute = speaker_mute_rx.clone();
let handle = taps.spawn(async move {
tap_remote(ps, key, broadcast_consumer, ab, store, spk_mute).await;
});
tap_keys.insert(path_str, handle);
}
None => {
let path_str = path.to_string();
// Keep last frame visible — SFU unannounce/reannounce
// blips used to clear the tile and flash black. Stale
// frames are wiped on call end via clear_av_media.
if let Some(h) = tap_keys.remove(&path_str) {
h.abort();
}
log::info!("av-media: - remote {path_str}");
}
}
}
// Reap finished taps so JoinSet doesn't grow forever.
Some(res) = taps.join_next() => {
if let Err(e) = res {
if !e.is_cancelled() {
log::debug!("av-media: tap task ended: {e}");
}
}
}
msg = control.recv() => {
let Some(msg) = msg else { break };
match msg {
MediaControl::SetMuted(m) => {
muted.store(m, Ordering::Relaxed);
log::info!("av-media: muted={m}");
}
MediaControl::SetSpeakerMuted(m) => {
if speaker_mute_tx.send(m).is_ok() {
log::info!("av-media: speaker_muted={m}");
}
}
MediaControl::SetCameraEnabled(en) => {
camera_enabled.store(en, Ordering::Relaxed);
if en {
if camera_open {
log::info!("av-media: camera already open (publish on)");
} else {
#[cfg(not(target_os = "android"))]
{
match attach_desktop_camera(
preferred_camera_id.as_deref(),
&_broadcast,
camera_enabled.clone(),
video_store.clone(),
local_frame_count.clone(),
) {
Ok(opened_id) => {
if let Some(id) = opened_id {
preferred_camera_id = Some(id);
}
preview_keepalive = hold_preview_keepalive(&_broadcast);
preview_pump = spawn_local_preview_pump(
&_broadcast,
video_store.clone(),
camera_enabled.clone(),
);
camera_open = true;
has_camera = true;
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera: true,
mic_level: mic_level.clone(),
has_mic,
});
}
Err(e) => {
log::warn!("av-media: enable camera failed: {e}");
camera_enabled.store(false, Ordering::Relaxed);
has_camera = camera_devices_present();
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera,
mic_level: mic_level.clone(),
has_mic,
});
}
}
}
#[cfg(target_os = "android")]
{
match open_android_camera(
preferred_camera_id.as_deref(),
&_broadcast,
camera_enabled.clone(),
video_store.clone(),
local_frame_count.clone(),
true,
) {
Ok(guard) => {
android_camera_guard = Some(guard);
preview_keepalive = hold_preview_keepalive(&_broadcast);
preview_pump = spawn_local_preview_pump(
&_broadcast,
video_store.clone(),
camera_enabled.clone(),
);
camera_open = true;
has_camera = true;
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera: true,
mic_level: mic_level.clone(),
has_mic,
});
}
Err(e) => {
log::warn!(
"av-media: enable Android camera failed: {e}"
);
camera_enabled.store(false, Ordering::Relaxed);
has_camera = camera_devices_present();
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera,
mic_level: mic_level.clone(),
has_mic,
});
}
}
}
}
} else if camera_open {
release_local_camera(
&_broadcast,
&mut preview_keepalive,
&mut preview_pump,
&video_store,
#[cfg(target_os = "android")]
&mut android_camera_guard,
);
camera_open = false;
local_frame_count.store(0, Ordering::Relaxed);
// Keep the toggle: device is available, just not held.
has_camera = camera_devices_present() || has_camera;
log::info!(
"av-media: camera released (publish off; privacy light off)"
);
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera,
mic_level: mic_level.clone(),
has_mic,
});
} else {
video_store.remove(LOCAL_PREVIEW_KEY);
}
}
MediaControl::SetMicDevice(name) => {
#[cfg(not(target_os = "android"))]
{
let id = resolve_audio_device_id(name.as_deref(), true);
match audio_backend_ctrl.switch_input(id).await {
Ok(()) => log::info!("av-media: mic switched to {name:?}"),
Err(e) => log::warn!("av-media: switch mic failed: {e}"),
}
}
#[cfg(target_os = "android")]
{
let _ = name;
}
}
MediaControl::SetSpeakerDevice(name) => {
#[cfg(not(target_os = "android"))]
{
let id = resolve_audio_device_id(name.as_deref(), false);
match audio_backend_ctrl.switch_output(id).await {
Ok(()) => log::info!("av-media: speaker switched to {name:?}"),
Err(e) => log::warn!("av-media: switch speaker failed: {e}"),
}
}
#[cfg(target_os = "android")]
{
let _ = name;
}
}
MediaControl::SetCameraDevice(id) => {
preferred_camera_id = id.clone();
// Camera off: remember preference only — do not open
// (would light the privacy LED while publish is off).
if !camera_enabled.load(Ordering::Relaxed) {
log::info!(
"av-media: camera device preference set to {id:?} \
(device closed; camera off)"
);
has_camera = camera_devices_present() || has_camera;
continue;
}
release_local_camera(
&_broadcast,
&mut preview_keepalive,
&mut preview_pump,
&video_store,
#[cfg(target_os = "android")]
&mut android_camera_guard,
);
camera_open = false;
local_frame_count.store(0, Ordering::Relaxed);
#[cfg(not(target_os = "android"))]
{
match attach_desktop_camera(
preferred_camera_id.as_deref(),
&_broadcast,
camera_enabled.clone(),
video_store.clone(),
local_frame_count.clone(),
) {
Ok(opened_id) => {
if let Some(oid) = opened_id {
preferred_camera_id = Some(oid);
}
preview_keepalive = hold_preview_keepalive(&_broadcast);
preview_pump = spawn_local_preview_pump(
&_broadcast,
video_store.clone(),
camera_enabled.clone(),
);
camera_open = true;
has_camera = true;
log::info!(
"av-media: camera device switched to {id:?}"
);
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera: true,
mic_level: mic_level.clone(),
has_mic,
});
}
Err(e) => {
log::warn!("av-media: open camera {id:?}: {e}");
camera_enabled.store(false, Ordering::Relaxed);
has_camera = camera_devices_present();
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera,
mic_level: mic_level.clone(),
has_mic,
});
}
}
}
#[cfg(target_os = "android")]
{
match open_android_camera(
preferred_camera_id.as_deref(),
&_broadcast,
camera_enabled.clone(),
video_store.clone(),
local_frame_count.clone(),
true,
) {
Ok(guard) => {
android_camera_guard = Some(guard);
preview_keepalive = hold_preview_keepalive(&_broadcast);
preview_pump = spawn_local_preview_pump(
&_broadcast,
video_store.clone(),
camera_enabled.clone(),
);
camera_open = true;
has_camera = true;
log::info!(
"av-media: Android camera switched to {id:?}"
);
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera: true,
mic_level: mic_level.clone(),
has_mic,
});
}
Err(e) => {
log::warn!("av-media: Android camera switch {id:?}: {e}");
camera_enabled.store(false, Ordering::Relaxed);
has_camera = camera_devices_present();
on_status(AvMediaUpdate::Live {
video: video_store.clone(),
has_camera,
mic_level: mic_level.clone(),
has_mic,
});
}
}
}
}
}
}
}
}
drop(session_handle);
// Tear down every remote tap so AudioBackend / PW streams die with us.
for (_, h) in tap_keys.drain() {
h.abort();
}
taps.abort_all();
while taps.join_next().await.is_some() {}
// Drop preview tracks first so the pump thread sees is_closed and exits.
drop(preview_keepalive);
if let Some(h) = preview_pump.take() {
// Best-effort join; don't block teardown if the pump is wedged.
let _ = h.join();
}
drop(audio_backend_ctrl);
drop(audio_for_playback);
// Keep last frames in the shared store so the call UI can paint stale tiles
// across MoQ transport drops / re-dials. Call end clears via clear_av_media.
mic_level.clear();
// Brief yield so aborted tasks drop cpal/PW resources before the next dial.
tokio::time::sleep(std::time::Duration::from_millis(50)).await;
log::info!("av-media: teardown complete for {our_broadcast}");
Ok(())
}
/// Subscribe audio + video for one remote broadcast until it ends or is aborted.
///
/// `key` is the frame-store id (`nick` or `nick~instance` from [`path_key`]).
///
/// Audio and video are independent: a catalog race that delays the audio
/// rendition must not tear down video (and vice versa). We wait with
/// `audio_ready` / `video_ready` and retry so late-advertised tracks still play.
///
/// `speaker_mute` drives remote playback volume (`0.0` when muted, `1.0` otherwise).
async fn tap_remote(
path: String,
key: String,
broadcast_consumer: moq_lite::BroadcastConsumer,
audio_backend: AudioBackend,
video_store: VideoFrameStore,
speaker_mute: watch::Receiver<bool>,
) {
// Match freeq-sdk-ffi: tighter latency than the 150ms streaming default.
let policy = iroh_live::media::playout::PlaybackPolicy::default()
.with_max_latency(std::time::Duration::from_millis(60));
let remote =
match RemoteBroadcast::with_playback_policy(&path, broadcast_consumer, policy).await {
Ok(r) => r,
Err(e) => {
log::warn!("av-media: catalog {path}: {e}");
return;
}
};
let audio_task = {
let remote = remote.clone();
let ab = audio_backend;
let ps = path.clone();
let mut speaker_mute = speaker_mute;
tokio::spawn(async move {
let mut consecutive_errs = 0u32;
loop {
match remote.audio_ready(&ab).await {
Ok(track) => {
consecutive_errs = 0;
log::info!("av-media: receiving audio from {ps}");
// Apply current speaker mute, then hold until the track
// ends or mute toggles (volume 0 = silence, keeps decode).
apply_speaker_volume(&track, *speaker_mute.borrow());
loop {
tokio::select! {
_ = track.stopped() => {
log::info!("av-media: audio track ended for {ps}");
break;
}
changed = speaker_mute.changed() => {
if changed.is_err() {
// Session tearing down — keep track until stop.
track.stopped().await;
break;
}
apply_speaker_volume(&track, *speaker_mute.borrow());
}
}
}
}
Err(e) => {
consecutive_errs = consecutive_errs.saturating_add(1);
// Keep retrying while the remote broadcast is open — a
// transient audio catalog/transport blip must not kill
// the independent video pipeline (tap_remote waits on
// `remote.closed()`, not this task exiting).
if consecutive_errs <= 3 || consecutive_errs % 10 == 0 {
log::warn!("av-media: audio sub {ps}: {e} (retry {consecutive_errs})");
}
let backoff_ms = (500u64 * u64::from(consecutive_errs.min(8))).min(4_000);
tokio::time::sleep(std::time::Duration::from_millis(backoff_ms)).await;
}
}
}
})
};
let video_task = {
let remote = remote.clone();
let store = video_store.clone();
let key = key.clone();
let path = path.clone();
tokio::spawn(async move {
loop {
match remote.video_ready().await {
Ok(mut vtrack) => {
log::info!("av-media: receiving video from {path}");
while let Some(frame) = vtrack.next_frame().await {
let (w, h) = (frame.width(), frame.height());
let rgba = frame.rgba_image();
let bytes: Arc<[u8]> = rgba.as_raw().as_slice().into();
store.set(key.clone(), w, h, bytes);
}
log::info!("av-media: video track ended for {path}");
}
Err(e) => {
log::debug!("av-media: video wait {path}: {e}");
tokio::time::sleep(std::time::Duration::from_millis(500)).await;
}
}
}
})
};
// Audio and video are independent: keep both taps alive until the remote
// broadcast catalog entry closes. Do not abort one when the other retries
// or hits a transient transport error — that dropped video while audio
// (and IRC call state) continued.
let close_err = remote.closed().await;
log::info!("av-media: remote closed {path}: {close_err}");
audio_task.abort();
video_task.abort();
// Frame removal is driven by announce `None` (participant left). Do not
// clear here — tap replacement would flash black until the next frame.
}
/// Set remote track volume from speaker-mute (`0.0` silence, `1.0` full).
fn apply_speaker_volume(track: &iroh_live::media::subscribe::AudioTrack, muted: bool) {
track.set_volume(if muted { 0.0 } else { 1.0 });
}
/// Open the default mic input, retrying after clearing preferred devices if
/// the first open fails.
///
/// moq-media starts **output and input as a pair**. A bad speaker pref
/// (`sysdefault` busy under PipeWire) fails the whole pair, so we must clear
/// **output** as well as input before retrying.
async fn open_microphone(
audio_backend: &AudioBackend,
) -> Result<Box<dyn iroh_live::media::traits::AudioSource>> {
match audio_backend.default_input().await {
Ok(mic) => Ok(Box::new(mic)),
Err(first) => {
log::warn!(
"av-media: default_input failed ({first}); \
retry after clearing preferred I/O devices"
);
#[cfg(not(target_os = "android"))]
{
// Output first: start_cpal_streams requires a working speaker.
if let Err(e) = audio_backend.switch_output(None).await {
log::warn!("av-media: switch_output(None) failed: {e}");
}
if let Err(e) = audio_backend.switch_input(None).await {
log::warn!("av-media: switch_input(None) failed: {e}");
}
}
match audio_backend.default_input().await {
Ok(mic) => Ok(Box::new(mic)),
Err(e) => Err(e),
}
}
}
}
/// Pull mic frames until we see energy or `budget` elapses. Returns peak abs.
fn warm_up_mic(
mic: &mut dyn iroh_live::media::traits::AudioSource,
budget: std::time::Duration,
) -> f32 {
let deadline = std::time::Instant::now() + budget;
let mut buf = vec![0.0f32; 960];
let mut peak = 0.0f32;
let mut ready = 0u32;
while std::time::Instant::now() < deadline {
match mic.pop_samples(&mut buf) {
Ok(Some(n)) if n > 0 => {
ready = ready.saturating_add(1);
for &s in &buf[..n] {
peak = peak.max(s.abs());
}
if peak > 1e-3 {
break;
}
}
Ok(_) => {}
Err(e) => {
log::warn!("av-media: mic warm-up read error: {e:#}");
break;
}
}
std::thread::sleep(std::time::Duration::from_millis(10));
}
log::info!("av-media: mic warm-up ready_frames={ready} peak={peak:.4}");
peak
}
/// Always-ready mono 48 kHz silence — keeps an Opus track advertised when
/// no capture device is available (listen-only join).
struct SilenceSource {
format: iroh_live::media::format::AudioFormat,
}
impl Default for SilenceSource {
fn default() -> Self {
Self {
format: iroh_live::media::format::AudioFormat::mono_48k(),
}
}
}
impl iroh_live::media::traits::AudioSource for SilenceSource {
fn format(&self) -> iroh_live::media::format::AudioFormat {
self.format
}
fn pop_samples(&mut self, buf: &mut [f32]) -> anyhow::Result<Option<usize>> {
for s in buf.iter_mut() {
*s = 0.0;
}
Ok(Some(buf.len()))
}
}
#[cfg(not(target_os = "android"))]
fn camera_config() -> CameraConfig {
CameraConfig {
selector: CameraSelector::TargetResolution(640, 360),
preferred_format: None,
// CPU RGBA — safer for local preview tee + software H.264.
zero_copy: false,
}
}
/// Join-time policy: only claim capture hardware when publish is on.
/// (Soft-gating an already-open device leaves STREAMON / Camera2 live and
/// lights the privacy LED while the UI shows camera off.)
fn should_claim_camera_hardware(publish_enabled: bool) -> bool {
publish_enabled
}
/// True when at least one camera enumerates (does not open / stream).
fn camera_devices_present() -> bool {
!list_cameras().is_empty()
}
/// Hold a local preview track so SharedVideoSource stays unparked for self-view
/// even with no remote H.264 subscriber.
fn hold_preview_keepalive(
broadcast: &LocalBroadcast,
) -> Option<iroh_live::media::subscribe::VideoTrack> {
let t = broadcast.preview();
if t.is_some() {
log::info!("av-media: local preview keepalive held (SharedVideoSource unparked)");
} else {
log::warn!("av-media: broadcast.preview() returned None after set_source");
}
t
}
/// Release capture hardware: drop preview subscribers, clear the MoQ video
/// track (stops SharedVideoSource → streamoff / close), and stop Camera2.
fn release_local_camera(
broadcast: &LocalBroadcast,
preview_keepalive: &mut Option<iroh_live::media::subscribe::VideoTrack>,
preview_pump: &mut Option<std::thread::JoinHandle<()>>,
video_store: &VideoFrameStore,
#[cfg(target_os = "android")] android_guard: &mut Option<
crate::android_camera::CameraCaptureGuard,
>,
) {
*preview_keepalive = None;
// Pump exits when publish is off (or the preview track closes). Join briefly
// so we don't leave a detached thread holding a VideoTrack across clear().
if let Some(h) = preview_pump.take() {
let deadline = std::time::Instant::now() + std::time::Duration::from_millis(500);
loop {
if h.is_finished() {
let _ = h.join();
break;
}
if std::time::Instant::now() >= deadline {
log::warn!("av-media: local preview pump did not exit in 500ms; detaching");
break;
}
std::thread::sleep(std::time::Duration::from_millis(10));
}
}
broadcast.video().clear();
#[cfg(target_os = "android")]
{
drop(android_guard.take());
}
video_store.remove(LOCAL_PREVIEW_KEY);
}
/// Open a desktop camera and attach it as the broadcast H.264 source.
/// Returns the opened device id when known.
#[cfg(not(target_os = "android"))]
fn attach_desktop_camera(
preferred: Option<&str>,
broadcast: &LocalBroadcast,
camera_enabled: Arc<AtomicBool>,
video_store: VideoFrameStore,
local_frame_count: Arc<AtomicU64>,
) -> Result<Option<String>> {
let (cam, opened_id) = open_camera_with_fallback(preferred)?;
let cam_name = cam.name().to_string();
let gated = GatedCameraSource {
inner: cam,
enabled: camera_enabled.clone(),
preview: video_store,
frame_count: local_frame_count,
streaming: false,
};
broadcast
.video()
.set_source(gated, VideoCodec::H264, [VideoPreset::P360])
.context("video set_source")?;
if is_virtual_camera(&cam_name, opened_id.as_deref().unwrap_or("")) {
log::info!(
"av-media: using virtual camera {cam_name} — \
in OBS: Controls → Start Virtual Camera \
(otherwise self-view is blank)"
);
}
log::info!(
"av-media: camera open id={opened_id:?} name={cam_name}, \
publishing H.264 360p (publish={})",
camera_enabled.load(Ordering::Relaxed)
);
Ok(opened_id)
}
/// Open preferred camera, then fall back through the device list (hardware first).
///
/// Deliberately **does not** start/stop/probe frames here. V4L2 `dqbuf` is
/// blocking with no timeout — a probe that hangs leaves the device busy so
/// every later open fails (audio-only calls + blank self-view tile). Parent
/// behavior was `CameraCapturer::open` only; SharedVideoSource starts streaming
/// when the first preview/encoder subscriber arrives.
///
/// Open preferred camera, then fall back through hardware. Virtual (OBS) is
/// only used when the user **explicitly** preferred that id — never as a silent
/// fallback when the USB cam is busy (OBS often holds `/dev/video0` while
/// exposing `/dev/video10`).
#[cfg(not(target_os = "android"))]
fn open_camera_with_fallback(
preferred: Option<&str>,
) -> Result<(Box<dyn VideoSource>, Option<String>)> {
let config = camera_config();
let preferred = preferred.filter(|s| !s.is_empty());
let listed = match CameraCapturer::list() {
Ok(c) => c,
Err(e) => {
log::warn!("av-media: CameraCapturer::list failed: {e}");
Vec::new()
}
};
log::info!(
"av-media: cameras available: {}",
if listed.is_empty() {
"(none)".into()
} else {
listed
.iter()
.map(|c| {
let v = if is_virtual_camera(&c.name, &c.id) {
" [virtual]"
} else {
""
};
format!("{} ({}){v}", c.name, c.id)
})
.collect::<Vec<_>>()
.join(", ")
}
);
let is_virt = |id: &str| {
listed
.iter()
.find(|c| c.id == id || c.name == id)
.map(|c| is_virtual_camera(&c.name, &c.id))
.unwrap_or_else(|| is_virtual_camera(id, id))
};
let mut candidates: Vec<Option<String>> = Vec::new();
// Explicit preference first (including virtual if the user picked OBS).
if let Some(id) = preferred {
candidates.push(Some(id.to_string()));
if is_virt(id) {
log::info!(
"av-media: preferred {id} is virtual (OBS) — opening it first. \
USB cam may be busy because OBS is using it as a source."
);
}
}
// Then non-virtual hardware (skip virtuals for auto-pick).
let mut cams = listed.clone();
cams.sort_by(|a, b| a.name.to_lowercase().cmp(&b.name.to_lowercase()));
for c in cams {
if is_virtual_camera(&c.name, &c.id) {
continue;
}
if c.supported_formats.is_empty() {
continue;
}
if candidates
.iter()
.any(|x| x.as_deref() == Some(c.id.as_str()) || x.as_deref() == Some(c.name.as_str()))
{
continue;
}
candidates.push(Some(c.id));
}
if !candidates.iter().any(|c| c.is_none()) {
candidates.push(None);
}
let mut errors: Vec<String> = Vec::new();
for cand in &candidates {
let label = cand.as_deref().unwrap_or("(default)");
match open_camera_with_busy_retry(cand.as_deref(), &config) {
Ok(cam) => {
let name = cam.name().to_string();
// Reject *accidental* virtual from default open when user did not
// prefer virtual.
let user_wants_virtual = preferred.is_some_and(|p| is_virt(p));
if is_virtual_camera(&name, label) && !user_wants_virtual {
log::warn!("av-media: rejecting auto-opened virtual camera {name} ({label})");
errors.push(format!("{label}: rejected virtual {name}"));
continue;
}
if is_virtual_camera(&name, label) {
log::info!(
"av-media: opened virtual camera {name} — ensure OBS has \
'Start Virtual Camera' enabled or self-view will be blank"
);
}
log::info!("av-media: opened camera id={label:?} name={name}");
return Ok((cam, cand.clone()));
}
Err(e) => {
let msg = format!("{e:#}");
if msg.contains("busy") {
log::warn!(
"av-media: open camera {label}: {msg} \
(often OBS or another app holds the USB cam)"
);
} else {
log::warn!("av-media: open camera {label}: {msg}");
}
errors.push(format!("{label}: {e}"));
}
}
}
Err(anyhow::anyhow!(
"no working camera ({})",
errors.join(" | ")
))
}
/// Open one device; retry briefly on "busy" (race with OBS / previous session).
///
/// v4l2loopback nodes (OBS Virtual Camera) are routed to
/// [`crate::v4l2cam::V4l2MmapCapture`]: rusty-capture's dqbuf leaves the
/// `memory` field 0, which loopback drivers reject with EINVAL on the first
/// frame (silent blank self-view). Hardware cams keep rusty-capture.
#[cfg(not(target_os = "android"))]
fn open_camera_with_busy_retry(
id: Option<&str>,
config: &CameraConfig,
) -> Result<Box<dyn VideoSource>> {
// Loopback devices get the dqbuf-fixed capturer (no busy-retry needed —
// loopback nodes are multi-reader, "busy" doesn't apply the same way).
#[cfg(target_os = "linux")]
{
// Resolve `(default)` to the first listed device so a loopback first
// entry (e.g. OBS-only setups) also lands on the fixed capture path.
let resolved: Option<String> = match id {
Some(p) if p.starts_with("/dev/video") => Some(p.to_string()),
Some(_) => None, // name, not a device path — rusty-capture handles
None => CameraCapturer::list()
.ok()
.and_then(|c| c.into_iter().next())
.map(|c| c.id)
.filter(|p| p.starts_with("/dev/video")),
};
if let Some(path) = resolved {
if crate::v4l2cam::is_loopback_device(&path) {
let (w, h) = match config.selector {
CameraSelector::TargetResolution(w, h) => (w, h),
_ => (640, 360),
};
let cam = crate::v4l2cam::V4l2MmapCapture::open(&path, w, h)
.with_context(|| format!("loopback open {path}"))?;
log::info!("av-media: using dqbuf-fixed capture for loopback {path}");
return Ok(Box::new(cam));
}
}
}
const ATTEMPTS: u32 = 4;
let mut last = None;
for attempt in 0..ATTEMPTS {
match CameraCapturer::open(None, id, config) {
Ok(cam) => return Ok(Box::new(cam)),
Err(e) => {
let busy = e.to_string().to_ascii_lowercase().contains("busy");
last = Some(e);
if busy && attempt + 1 < ATTEMPTS {
std::thread::sleep(std::time::Duration::from_millis(
150 * (attempt + 1) as u64,
));
continue;
}
break;
}
}
}
Err(last.unwrap_or_else(|| anyhow::anyhow!("open failed")))
}
/// Luma (Rec.601 approx) min/max across RGBA bytes — used by live diagnostics
/// and tests to detect a real camera picture vs a blank/uniform buffer.
/// Ships with the crate (not test-only) so pump/tee logs report real content.
pub(crate) fn rgba_luma_range(rgba: &[u8]) -> (u8, u8) {
let mut min = 255u8;
let mut max = 0u8;
for px in rgba.chunks_exact(4) {
let l = ((77u32 * px[0] as u32 + 150u32 * px[1] as u32 + 29u32 * px[2] as u32) >> 8) as u8;
min = min.min(l);
max = max.max(l);
}
(min, max)
}
/// Pump `broadcast.preview()` frames into `__local__` for self-view.
fn spawn_local_preview_pump(
broadcast: &LocalBroadcast,
store: VideoFrameStore,
enabled: Arc<AtomicBool>,
) -> Option<std::thread::JoinHandle<()>> {
let mut track = match broadcast.preview() {
Some(t) => t,
None => {
log::warn!("av-media: preview() for pump returned None");
return None;
}
};
match std::thread::Builder::new()
.name("local-preview-pump".into())
.spawn(move || {
let mut logged = false;
let mut pump_waited_ms = 0u64;
let mut warned_no_frames = false;
loop {
// Exit on mute so we drop the preview VideoTrack and let
// release_local_camera clear the SharedVideoSource promptly.
// Spinning here used to keep a subscriber alive across "camera
// off" and leave V4L2 STREAMON / Camera2 repeating (LED on).
if !enabled.load(Ordering::Relaxed) {
store.remove(LOCAL_PREVIEW_KEY);
log::info!("av-media: local preview pump exit (publish off)");
break;
}
if let Some(frame) = track.try_recv() {
let (w, h) = (frame.width(), frame.height());
match std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
let rgba = frame.rgba_image();
let bytes: Arc<[u8]> = rgba.as_raw().as_slice().into();
(w, h, bytes)
})) {
Ok((w, h, bytes)) => {
let (r0, g0, b0, a0) = bytes
.get(0..4)
.map(|p| (p[0], p[1], p[2], p[3]))
.unwrap_or((0, 0, 0, 0));
let (luma_min, luma_max) = rgba_luma_range(&bytes);
store.set(LOCAL_PREVIEW_KEY, w, h, bytes);
if !logged {
logged = true;
log::info!(
"av-media: local preview pump first frame {w}x{h} \
rgba0=({r0},{g0},{b0},{a0}) luma={luma_min}..{luma_max}"
);
if luma_max == luma_min {
log::warn!(
"av-media: local preview frame is uniform \
(blank capture?) — OBS Virtual Camera not started?"
);
}
}
}
Err(_) => {
log::warn!("av-media: local preview pump rgba_image panicked {w}x{h}");
}
}
} else if track.is_closed() {
log::info!("av-media: local preview pump track closed");
break;
} else {
// Warn once if capture is up but never yields a frame
// (dead OBS virtual node, busy device, etc.).
if !logged && pump_waited_ms >= 3_000 && !warned_no_frames {
warned_no_frames = true;
log::warn!(
"av-media: no local preview frames after {}ms — camera capture \
is not producing (OBS Virtual Camera not started, or device busy)",
pump_waited_ms
);
}
pump_waited_ms = pump_waited_ms.saturating_add(10);
std::thread::sleep(std::time::Duration::from_millis(10));
}
}
}) {
Ok(h) => {
log::info!("av-media: local preview pump thread started");
Some(h)
}
Err(e) => {
log::warn!("av-media: local preview pump spawn failed: {e}");
None
}
}
}
/// Mid-call device switch uses the same fallback path.
/// Start Android Camera2, register a gated NV12 [`VideoSource`], and return a
/// guard that stops the camera when dropped (call end or camera toggled off).
#[cfg(target_os = "android")]
fn open_android_camera(
camera_id: Option<&str>,
broadcast: &LocalBroadcast,
camera_enabled: Arc<AtomicBool>,
video_store: VideoFrameStore,
local_frame_count: Arc<AtomicU64>,
want_publish: bool,
) -> Result<crate::android_camera::CameraCaptureGuard> {
crate::android_camera::start_capture(camera_id).context("CameraCapture.start")?;
// Camera2 open + session configure is async on a Java handler thread.
if let Err(e) = crate::android_camera::wait_until_opened(std::time::Duration::from_secs(5)) {
crate::android_camera::stop_capture();
return Err(e).context("Camera2 session");
}
let label = camera_id
.filter(|s| !s.is_empty())
.unwrap_or("front")
.to_string();
let cam = crate::android_camera::PushCameraSource::new(format!("android-camera:{label}"));
let gated = GatedCameraSource {
inner: Box::new(cam),
enabled: camera_enabled.clone(),
preview: video_store,
frame_count: local_frame_count,
streaming: false,
};
if let Err(e) = broadcast
.video()
.set_source(gated, VideoCodec::H264, [VideoPreset::P360])
{
// Camera2 is live but MoQ source failed — release hardware.
crate::android_camera::stop_capture();
return Err(e).context("video set_source");
}
if want_publish {
camera_enabled.store(true, Ordering::Relaxed);
}
log::info!(
"av-media: Android camera open id={camera_id:?}, publishing H.264 360p (publish={})",
camera_enabled.load(Ordering::Relaxed)
);
Ok(crate::android_camera::CameraCaptureGuard)
}
/// Wraps camera capture while hardware is held. Publish/self-view are gated by
/// `enabled`. When publish flips off we **stop the inner capturer immediately**
/// (V4L2 `STREAMOFF` / close) so the privacy LED goes dark without waiting for
/// the media task's `release_local_camera` clear — the old gate still called
/// `inner.pop_frame()` first, which kept STREAMON alive while discarding frames.
/// `release_local_camera` remains the steady-state teardown (drop source +
/// Camera2 guard).
///
/// Always tees enabled frames into `__local__` for self-view (requires a
/// SharedVideoSource subscriber — we hold `broadcast.preview()` as keepalive).
///
/// `inner` is boxed so v4l2loopback devices (OBS Virtual Camera) can use the
/// loopback-safe [`crate::v4l2cam::V4l2MmapCapture`] instead of rusty-capture's
/// `CameraCapturer` (whose v4l2r dqbuf leaves `memory=0` → EINVAL on loopback).
/// On Android, `inner` is the Camera2 [`PushCameraSource`].
struct GatedCameraSource {
inner: Box<dyn VideoSource>,
enabled: Arc<AtomicBool>,
preview: VideoFrameStore,
frame_count: Arc<AtomicU64>,
/// Whether `inner.start()` is live. Cleared on gate-off / `stop()` so mute
/// can streamoff without waiting for SharedVideoSource teardown.
streaming: bool,
}
impl VideoSource for GatedCameraSource {
fn name(&self) -> &str {
self.inner.name()
}
fn format(&self) -> iroh_live::media::format::VideoFormat {
self.inner.format()
}
fn start(&mut self) -> anyhow::Result<()> {
let r = self.inner.start();
if r.is_ok() {
self.streaming = true;
}
r
}
fn stop(&mut self) -> anyhow::Result<()> {
self.streaming = false;
self.inner.stop()
}
fn pop_frame(&mut self) -> anyhow::Result<Option<iroh_live::media::format::VideoFrame>> {
// Check publish flag *before* capturing. The previous order (dqbuf then
// discard) left V4L2 STREAMON / the privacy LED on for the whole mute.
if !self.enabled.load(Ordering::Relaxed) {
if self.streaming {
if let Err(e) = self.inner.stop() {
log::warn!(
"av-media: camera {} stop on mute failed: {e:#}",
self.inner.name()
);
} else {
log::info!(
"av-media: camera {} hardware stopped (publish off; privacy light off)",
self.inner.name()
);
}
self.streaming = false;
// Android PushCameraSource::stop only clears the frame cell —
// Camera2 stays open until stop_capture / guard drop.
#[cfg(target_os = "android")]
crate::android_camera::stop_capture();
}
self.preview.remove(LOCAL_PREVIEW_KEY);
// SharedVideoSource spins on Ok(None); back off while gated.
std::thread::sleep(std::time::Duration::from_millis(20));
return Ok(None);
}
if !self.streaming {
self.inner.start().map_err(|e| {
log::warn!(
"av-media: camera {} restart after mute failed: {e:#}",
self.inner.name()
);
e
})?;
self.streaming = true;
// Android Camera2 is restarted by open_android_camera after
// release_local_camera clears the guard — not from this gate.
}
let frame = match self.inner.pop_frame() {
Ok(f) => f,
Err(e) => {
// Surface real capture failures (e.g. OBS Virtual Camera not
// started → v4l2loopback dqbuf EINVAL; busy USB cam → EBUSY).
// Upstream SharedVideoSource stops the capture thread silently
// on Err — that left users staring at a blank tile with no log.
let msg = format!("{e:#}");
let already = self.frame_count.load(Ordering::Relaxed) > 0;
let key = if msg.contains("EINVAL") {
"virtual camera not producing (start OBS Virtual Camera output?)"
} else if msg.contains("EBUSY") || msg.contains("busy") {
"camera busy (held by OBS or another app?)"
} else {
"capture error"
};
log::warn!(
"av-media: camera {} pop_frame failed: {msg} — {key} {}",
self.inner.name(),
if already {
"(frames had been flowing)"
} else {
"(no frames ever captured)"
}
);
self.preview.remove(LOCAL_PREVIEW_KEY);
self.streaming = false;
return Err(e);
}
};
if let Some(ref f) = frame {
let (w, h) = (f.width(), f.height());
// Best-effort local preview — never fail the encode path.
match std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
let rgba = f.rgba_image();
let bytes: Arc<[u8]> = rgba.as_raw().as_slice().into();
(w, h, bytes)
})) {
Ok((w, h, bytes)) => {
// Sample first pixel + luma range for blank/alpha diagnostics.
let (r0, g0, b0, a0) = bytes
.get(0..4)
.map(|p| (p[0], p[1], p[2], p[3]))
.unwrap_or((0, 0, 0, 0));
let (luma_min, luma_max) = rgba_luma_range(&bytes);
self.preview.set(LOCAL_PREVIEW_KEY, w, h, bytes);
let n = self.frame_count.fetch_add(1, Ordering::Relaxed);
if n == 0 {
log::info!(
"av-media: first published/preview frame {w}x{h} \
rgba0=({r0},{g0},{b0},{a0}) luma={luma_min}..{luma_max} \
(outbound video live)"
);
if luma_max == luma_min {
log::warn!(
"av-media: published frame is uniform (blank capture?) — \
OBS Virtual Camera not started?"
);
}
} else if n == 30 || n == 300 || n == 3000 {
log::info!(
"av-media: published frames={n} ({w}x{h}) \
rgba0=({r0},{g0},{b0},{a0}) luma={luma_min}..{luma_max}"
);
}
}
Err(_) => {
log::warn!("av-media: rgba_image panicked on local frame {w}x{h}");
// Still count as a publishable frame even if preview tee failed.
let n = self.frame_count.fetch_add(1, Ordering::Relaxed);
if n == 0 {
log::info!("av-media: first publish frame {w}x{h} (preview tee failed)");
}
}
}
}
Ok(frame)
}
}
/// RMS of a PCM buffer — used by tests and as a simple energy metric.
pub fn pcm_rms(samples: &[f32]) -> f32 {
if samples.is_empty() {
return 0.0;
}
let sum_sq: f32 = samples.iter().map(|s| s * s).sum();
(sum_sq / samples.len() as f32).sqrt()
}
/// Continuous 48 kHz mono sine — freeq mesh rate (see freeq-av `SPEAK_RATE`).
///
/// Used by interop tests as a deterministic non-silent capture substitute so
/// we prove Opus encode/decode energy without requiring a real microphone.
#[cfg(test)]
struct ToneSource {
format: iroh_live::media::format::AudioFormat,
phase: f32,
frequency: f32,
}
#[cfg(test)]
impl ToneSource {
fn hz440() -> Self {
Self {
format: iroh_live::media::format::AudioFormat::mono_48k(),
phase: 0.0,
frequency: 440.0,
}
}
}
#[cfg(test)]
impl iroh_live::media::traits::AudioSource for ToneSource {
fn format(&self) -> iroh_live::media::format::AudioFormat {
self.format
}
fn pop_samples(&mut self, buf: &mut [f32]) -> anyhow::Result<Option<usize>> {
let channels = self.format.channel_count.max(1) as usize;
let frames = buf.len() / channels;
let phase_inc = self.frequency / self.format.sample_rate as f32;
for i in 0..frames {
let sample = (2.0 * std::f32::consts::PI * self.phase).sin() * 0.5;
for ch in 0..channels {
buf[i * channels + ch] = sample;
}
self.phase += phase_inc;
self.phase -= self.phase.floor();
}
// Always a full buffer — never `None` (iroh-live encoder skips `None`).
Ok(Some(buf.len()))
}
}
/// Target peak after AGC (linear). Browsers apply getUserMedia AGC; cpal/PW
/// does not — EMEET often lands at peak ~0.005 which Opus/bots treat as silence.
const AGC_TARGET_PEAK: f32 = 0.28;
/// Cap boost so noise floor alone doesn't become roar (≈ +32 dB).
const AGC_MAX_GAIN: f32 = 40.0;
/// Don't boost pure digital silence / inactive rings.
const AGC_MIN_PEAK: f32 = 5e-5;
/// Speech-ish energy after gain (for diagnostics).
const VOICED_PEAK: f32 = 0.02;
/// Wraps an AudioSource and emits silence while muted (keeps the Opus track live).
///
/// Mic level is measured on the **post-AGC** samples before mute zeros them.
///
/// When the inner source returns `None` (cpal ring not ready yet), we still
/// hand the encoder a full silence frame. The iroh-live encoder skips ticks
/// on `None`, which means **no Opus packets go out** — peers hear nothing
/// until the ring becomes ready, and intermittent `None`s produce dropouts.
/// Padding matches freeq-sdk-ffi `PushAudioSource` (always `Some(buf.len())`).
///
/// Short `Some(n)` reads are also padded to a full buffer so underruns never
/// starve the Opus encoder of continuous frames.
struct MuteableSource {
inner: Box<dyn iroh_live::media::traits::AudioSource>,
muted: Arc<AtomicBool>,
level: MicLevel,
/// Encode pulls (each ~20ms). Used for sparse diagnostics.
pulls: u64,
/// Pulls that had post-AGC energy above [`VOICED_PEAK`].
voiced: u64,
/// Adaptive linear gain (smoothed).
gain: f32,
/// Smoothed pre-gain peak for AGC.
smooth_peak: f32,
}
impl MuteableSource {
fn silence(muted: Arc<AtomicBool>, level: MicLevel) -> Self {
Self {
inner: Box::new(SilenceSource::default()),
muted,
level,
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
}
}
fn apply_agc(&mut self, buf: &mut [f32], pre_peak: f32) -> f32 {
// Slow envelope so gain doesn't pump on every syllable.
self.smooth_peak = self.smooth_peak * 0.92 + pre_peak * 0.08;
if self.smooth_peak >= AGC_MIN_PEAK {
let desired = (AGC_TARGET_PEAK / self.smooth_peak).clamp(1.0, AGC_MAX_GAIN);
self.gain = self.gain * 0.9 + desired * 0.1;
} else {
// Decay gain when capture is dead so we don't explode on first sample.
self.gain = (self.gain * 0.95).max(1.0);
}
let g = self.gain;
let mut post_peak = 0.0f32;
for s in buf.iter_mut() {
let v = (*s * g).clamp(-0.95, 0.95);
*s = v;
post_peak = post_peak.max(v.abs());
}
post_peak
}
}
impl iroh_live::media::traits::AudioSource for MuteableSource {
fn format(&self) -> iroh_live::media::format::AudioFormat {
self.inner.format()
}
fn pop_samples(&mut self, buf: &mut [f32]) -> anyhow::Result<Option<usize>> {
let mut pre_peak = 0.0f32;
let n = match self.inner.pop_samples(buf)? {
Some(n) if n > 0 => {
let take = n.min(buf.len());
for &s in &buf[..take] {
pre_peak = pre_peak.max(s.abs());
}
// Pad remainder before AGC so we gain a full encoder frame.
for s in &mut buf[take..] {
*s = 0.0;
}
let post = self.apply_agc(buf, pre_peak);
self.level.observe(buf);
let _ = post;
buf.len()
}
Some(_) | None => {
// Capture underrun / not-ready / empty: keep the track alive.
for s in buf.iter_mut() {
*s = 0.0;
}
self.level.observe(&[]);
self.smooth_peak *= 0.9;
buf.len()
}
};
let mut post_peak = 0.0f32;
for &s in buf.iter() {
post_peak = post_peak.max(s.abs());
}
self.pulls = self.pulls.saturating_add(1);
if post_peak > VOICED_PEAK {
self.voiced = self.voiced.saturating_add(1);
}
let is_muted = self.muted.load(Ordering::Relaxed);
if is_muted {
for s in buf.iter_mut() {
*s = 0.0;
}
}
// Sparse log: first encode pull, then every ~5s (250 * 20ms).
if self.pulls == 1 || self.pulls % 250 == 0 {
log::info!(
"av-media: outbound encode pulls={} voiced={} muted={} \
pre_peak={pre_peak:.4} post_peak={post_peak:.4} gain={:.1}x",
self.pulls,
self.voiced,
is_muted,
self.gain
);
}
// Always `Some(full)` — continuous Opus packets while the call is live.
Ok(Some(n))
}
}
#[cfg(test)]
mod tests {
use super::*;
use iroh_live::media::codec::AudioCodec;
use iroh_live::media::format::{AudioFormat, AudioPreset};
use iroh_live::media::playout::PlaybackPolicy;
use iroh_live::media::publish::LocalBroadcast;
use iroh_live::media::subscribe::RemoteBroadcast;
use iroh_live::media::traits::{AudioSink, AudioSinkHandle, AudioSource, AudioStreamFactory};
use n0_future::boxed::BoxFuture;
use std::time::Duration;
/// Real-device check (Linux): open a camera with the same capture crate the
/// app uses, pull frames, assert non-uniform content. Uses
/// `SLEEK_TEST_CAMERA_ID` (e.g. `/dev/video10`) when set, else default.
/// Skips with a printed reason when the device is busy or absent.
#[cfg(all(test, not(target_os = "android")))]
#[test]
fn real_camera_capture_produces_nonuniform_frames() {
let id = std::env::var("SLEEK_TEST_CAMERA_ID").ok();
let Ok(mut cam) = CameraCapturer::open(None, id.as_deref(), &camera_config()) else {
eprintln!("SKIP real_camera id={id:?}: open failed (busy/absent)");
return;
};
if let Err(e) = cam.start() {
eprintln!("SKIP real_camera id={id:?}: start failed: {e}");
return;
}
let deadline = std::time::Instant::now() + Duration::from_millis(2_500);
let mut frame = None;
while std::time::Instant::now() < deadline {
match cam.pop_frame() {
Ok(Some(f)) => {
frame = Some(f);
break;
}
Ok(None) => std::thread::sleep(Duration::from_millis(20)),
Err(e) => {
let _ = cam.stop();
eprintln!("SKIP real_camera id={id:?}: pop_frame error: {e}");
return;
}
}
}
let _ = cam.stop();
let Some(f) = frame else {
eprintln!("SKIP real_camera id={id:?}: no frames (OBS Virtual Camera not started?)");
return;
};
let (w, h) = (f.width(), f.height());
let rgba = f.rgba_image();
let bytes = rgba.as_raw().as_slice();
let (min, max) = rgba_luma_range(bytes);
let (r0, g0, b0, a0) = bytes
.get(0..4)
.map(|p| (p[0], p[1], p[2], p[3]))
.unwrap_or((0, 0, 0, 0));
eprintln!("camera id={id:?} {w}x{h} rgba0=({r0},{g0},{b0},{a0}) luma range {min}..{max}");
assert!(
max > min,
"real camera frame must be non-uniform (luma range {min}..{max}); \
got a blank/uniform buffer"
);
}
/// Source that always returns `None` — models cpal InputNotReady.
struct AlwaysNone;
impl AudioSource for AlwaysNone {
fn format(&self) -> AudioFormat {
AudioFormat::mono_48k()
}
fn pop_samples(&mut self, _buf: &mut [f32]) -> anyhow::Result<Option<usize>> {
Ok(None)
}
}
/// Source that returns short buffers (partial read underrun).
struct ShortRead {
n: usize,
}
impl AudioSource for ShortRead {
fn format(&self) -> AudioFormat {
AudioFormat::mono_48k()
}
fn pop_samples(&mut self, buf: &mut [f32]) -> anyhow::Result<Option<usize>> {
let n = self.n.min(buf.len());
for s in &mut buf[..n] {
*s = 0.25;
}
Ok(Some(n))
}
}
#[test]
fn muteable_source_never_returns_none_on_underrun() {
let muted = Arc::new(AtomicBool::new(false));
let mut src = MuteableSource {
inner: Box::new(AlwaysNone),
muted,
level: MicLevel::new(),
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
};
let mut buf = [1.0f32; 960]; // 20ms @ 48k
for _ in 0..50 {
let n = src.pop_samples(&mut buf).unwrap();
assert_eq!(n, Some(buf.len()), "encoder must get continuous frames");
assert!(
buf.iter().all(|&s| s == 0.0),
"underrun padding must be silence"
);
}
}
#[test]
fn muteable_source_pads_short_reads_to_full_buffer() {
let muted = Arc::new(AtomicBool::new(false));
let mut src = MuteableSource {
inner: Box::new(ShortRead { n: 100 }),
muted,
level: MicLevel::new(),
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
};
let mut buf = [0.0f32; 960];
let n = src.pop_samples(&mut buf).unwrap();
assert_eq!(n, Some(960));
// AGC may boost above 0.25; pad region stays 0.
assert!(
buf[..100].iter().all(|&s| s > 0.2),
"short-read region should keep signal (with AGC)"
);
assert!(buf[100..].iter().all(|&s| s == 0.0));
}
#[test]
fn muteable_source_zeros_when_muted_but_keeps_frames() {
let muted = Arc::new(AtomicBool::new(true));
let mut src = MuteableSource {
inner: Box::new(ToneSource::hz440()),
muted,
level: MicLevel::new(),
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
};
let mut buf = [0.0f32; 480];
let n = src.pop_samples(&mut buf).unwrap();
assert_eq!(n, Some(buf.len()));
assert_eq!(pcm_rms(&buf), 0.0, "muted must be silence");
// Level still saw pre-mute energy from the tone.
assert!(src.level.get() > 0.01, "mic meter should move while muted");
}
#[test]
fn muteable_source_tone_has_energy_when_unmuted() {
let muted = Arc::new(AtomicBool::new(false));
let mut src = MuteableSource {
inner: Box::new(ToneSource::hz440()),
muted,
level: MicLevel::new(),
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
};
let mut buf = [0.0f32; 4800]; // 100ms
let n = src.pop_samples(&mut buf).unwrap();
assert_eq!(n, Some(buf.len()));
let rms = pcm_rms(&buf);
assert!(
rms > 0.1,
"unmuted tone RMS {rms} should be clearly non-silent"
);
}
#[test]
fn silence_source_is_continuous_zeros() {
let mut s = SilenceSource::default();
let mut buf = [1.0f32; 320];
assert_eq!(s.pop_samples(&mut buf).unwrap(), Some(320));
assert!(buf.iter().all(|&x| x == 0.0));
}
/// freeq-av-style tap: capture decoded PCM instead of playing it.
struct TapBackend {
tx: std::sync::mpsc::SyncSender<Vec<f32>>,
}
impl AudioStreamFactory for TapBackend {
fn create_input(
&self,
format: AudioFormat,
) -> BoxFuture<anyhow::Result<Box<dyn AudioSource>>> {
let src = SilenceSource {
format: if format.sample_rate == 0 {
AudioFormat::mono_48k()
} else {
format
},
};
Box::pin(async move { Ok(Box::new(src) as Box<dyn AudioSource>) })
}
fn create_output(
&self,
format: AudioFormat,
) -> BoxFuture<anyhow::Result<Box<dyn AudioSink>>> {
let tx = self.tx.clone();
Box::pin(async move {
Ok(Box::new(TapSink {
format,
paused: Arc::new(AtomicBool::new(false)),
tx,
}) as Box<dyn AudioSink>)
})
}
}
struct TapSink {
format: AudioFormat,
paused: Arc<AtomicBool>,
tx: std::sync::mpsc::SyncSender<Vec<f32>>,
}
impl AudioSinkHandle for TapSink {
fn cloned_boxed(&self) -> Box<dyn AudioSinkHandle> {
Box::new(TapSinkHandle {
paused: self.paused.clone(),
})
}
fn pause(&self) {
self.paused.store(true, Ordering::Relaxed);
}
fn resume(&self) {
self.paused.store(false, Ordering::Relaxed);
}
fn is_paused(&self) -> bool {
self.paused.load(Ordering::Relaxed)
}
fn toggle_pause(&self) {
let _ = self
.paused
.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |v| Some(!v));
}
}
impl AudioSink for TapSink {
fn format(&self) -> anyhow::Result<AudioFormat> {
Ok(self.format)
}
fn push_samples(&mut self, buf: &[f32]) -> anyhow::Result<()> {
let _ = self.tx.try_send(buf.to_vec());
Ok(())
}
fn handle(&self) -> Box<dyn AudioSinkHandle> {
Box::new(TapSinkHandle {
paused: self.paused.clone(),
})
}
}
struct TapSinkHandle {
paused: Arc<AtomicBool>,
}
impl AudioSinkHandle for TapSinkHandle {
fn cloned_boxed(&self) -> Box<dyn AudioSinkHandle> {
Box::new(TapSinkHandle {
paused: self.paused.clone(),
})
}
fn pause(&self) {
self.paused.store(true, Ordering::Relaxed);
}
fn resume(&self) {
self.paused.store(false, Ordering::Relaxed);
}
fn is_paused(&self) -> bool {
self.paused.load(Ordering::Relaxed)
}
fn toggle_pause(&self) {
let _ = self
.paused
.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |v| Some(!v));
}
}
/// Publish through the shipped MuteableSource → LocalBroadcast Opus path,
/// subscribe like freeq-av/eve (RemoteBroadcast + tap sink), assert energy.
#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn outbound_muteable_tone_is_audible_to_subscriber() {
let path = broadcast_path("01TESTSESS", "desktop", "a1b2c3d4");
assert_eq!(path, "01TESTSESS/desktop~a1b2c3d4");
let broadcast = LocalBroadcast::new();
let muted = Arc::new(AtomicBool::new(false));
let muteable = MuteableSource {
inner: Box::new(ToneSource::hz440()),
muted,
level: MicLevel::new(),
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
};
broadcast
.audio()
.set(muteable, AudioCodec::Opus, [AudioPreset::Hq])
.expect("set Opus source (shipped publish path)");
let consumer = broadcast.consume();
// Keep producer alive for the duration of the test.
let _keepalive = broadcast;
let remote =
RemoteBroadcast::with_playback_policy(&path, consumer, PlaybackPolicy::unmanaged())
.await
.expect("catalog from LocalBroadcast");
let (tx, rx) = std::sync::mpsc::sync_channel::<Vec<f32>>(64);
let backend = TapBackend { tx };
let _track = remote
.audio_ready(&backend)
.await
.expect("audio_ready — catalog must advertise Opus");
// Collect decoded PCM for ~1.5s of wall time (Opus frame cadence).
let deadline = std::time::Instant::now() + Duration::from_millis(1500);
let mut samples: Vec<f32> = Vec::new();
while std::time::Instant::now() < deadline {
match rx.recv_timeout(Duration::from_millis(50)) {
Ok(chunk) => samples.extend_from_slice(&chunk),
Err(std::sync::mpsc::RecvTimeoutError::Timeout) => {}
Err(std::sync::mpsc::RecvTimeoutError::Disconnected) => break,
}
if samples.len() > 48_000 / 2 {
break; // ~0.5s mono 48k is enough for RMS
}
}
assert!(
!samples.is_empty(),
"subscriber got no PCM — publish path not producing Opus frames"
);
let rms = pcm_rms(&samples);
assert!(
rms > 0.01,
"decoded RMS {rms:.6} too low (samples={}) — bot would hear silence",
samples.len()
);
}
/// Catalog-only silence when capture is missing still produces frames
/// (listen-only), so agents stay attached rather than seeing no track.
#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn silence_source_still_publishes_continuous_opus_track() {
let broadcast = LocalBroadcast::new();
let muted = Arc::new(AtomicBool::new(true));
let muteable = MuteableSource {
inner: Box::new(SilenceSource::default()),
muted,
level: MicLevel::new(),
pulls: 0,
voiced: 0,
gain: 1.0,
smooth_peak: 0.0,
};
broadcast
.audio()
.set(muteable, AudioCodec::Opus, [AudioPreset::Hq])
.expect("silence Opus set");
let consumer = broadcast.consume();
let _keepalive = broadcast;
let remote = RemoteBroadcast::with_playback_policy(
"sess/listen-only",
consumer,
PlaybackPolicy::unmanaged(),
)
.await
.expect("catalog");
let (tx, rx) = std::sync::mpsc::sync_channel::<Vec<f32>>(32);
let backend = TapBackend { tx };
let _track = remote.audio_ready(&backend).await.expect("audio track");
let deadline = std::time::Instant::now() + Duration::from_millis(800);
let mut got = 0usize;
while std::time::Instant::now() < deadline {
if let Ok(chunk) = rx.recv_timeout(Duration::from_millis(40)) {
got += chunk.len();
if got > 2000 {
break;
}
}
}
assert!(
got > 0,
"listen-only silence must still emit continuous frames (got 0 samples)"
);
}
#[test]
fn camera_hardware_claimed_only_when_publish_enabled() {
assert!(should_claim_camera_hardware(true));
assert!(!should_claim_camera_hardware(false));
}
/// Mute must stop the inner capturer (streamoff) — not merely discard
/// frames after dqbuf, which left the privacy LED on.
#[test]
fn gated_camera_stops_inner_when_publish_off() {
use iroh_live::media::format::{PixelFormat, VideoFormat, VideoFrame};
use iroh_live::media::traits::VideoSource;
use std::sync::atomic::AtomicUsize;
struct CountingCam {
stops: Arc<AtomicUsize>,
starts: Arc<AtomicUsize>,
pops: Arc<AtomicUsize>,
}
impl VideoSource for CountingCam {
fn name(&self) -> &str {
"counting"
}
fn format(&self) -> VideoFormat {
VideoFormat {
pixel_format: PixelFormat::Rgba,
dimensions: [2, 2],
}
}
fn start(&mut self) -> anyhow::Result<()> {
self.starts.fetch_add(1, Ordering::Relaxed);
Ok(())
}
fn stop(&mut self) -> anyhow::Result<()> {
self.stops.fetch_add(1, Ordering::Relaxed);
Ok(())
}
fn pop_frame(&mut self) -> anyhow::Result<Option<VideoFrame>> {
self.pops.fetch_add(1, Ordering::Relaxed);
// Frame payload unused — we only assert stop/pop ordering.
Ok(None)
}
}
let stops = Arc::new(AtomicUsize::new(0));
let starts = Arc::new(AtomicUsize::new(0));
let pops = Arc::new(AtomicUsize::new(0));
let enabled = Arc::new(AtomicBool::new(true));
let mut gated = GatedCameraSource {
inner: Box::new(CountingCam {
stops: stops.clone(),
starts: starts.clone(),
pops: pops.clone(),
}),
enabled: enabled.clone(),
preview: VideoFrameStore::new(),
frame_count: Arc::new(AtomicU64::new(0)),
streaming: false,
};
gated.start().expect("start");
assert_eq!(starts.load(Ordering::Relaxed), 1);
assert!(gated.pop_frame().expect("pop").is_none());
assert_eq!(pops.load(Ordering::Relaxed), 1);
assert_eq!(stops.load(Ordering::Relaxed), 0);
enabled.store(false, Ordering::Relaxed);
assert!(gated.pop_frame().expect("gated pop").is_none());
assert_eq!(
stops.load(Ordering::Relaxed),
1,
"mute must call inner.stop() so STREAMON / privacy LED ends"
);
assert_eq!(
pops.load(Ordering::Relaxed),
1,
"must not dqbuf/pop after publish off"
);
// Further gated polls must not re-stop or capture.
assert!(gated.pop_frame().expect("gated pop 2").is_none());
assert_eq!(stops.load(Ordering::Relaxed), 1);
assert_eq!(pops.load(Ordering::Relaxed), 1);
}
#[tokio::test]
async fn release_local_camera_clears_broadcast_video() {
use iroh_live::media::format::{PixelFormat, VideoFormat, VideoFrame};
use iroh_live::media::traits::VideoSource;
struct StubCam;
impl VideoSource for StubCam {
fn name(&self) -> &str {
"stub"
}
fn format(&self) -> VideoFormat {
VideoFormat {
pixel_format: PixelFormat::Rgba,
dimensions: [4, 4],
}
}
fn start(&mut self) -> anyhow::Result<()> {
Ok(())
}
fn stop(&mut self) -> anyhow::Result<()> {
Ok(())
}
fn pop_frame(&mut self) -> anyhow::Result<Option<VideoFrame>> {
Ok(None)
}
}
let broadcast = LocalBroadcast::new();
broadcast
.video()
.set_source(StubCam, VideoCodec::H264, [VideoPreset::P360])
.expect("set stub video");
assert!(
broadcast.preview().is_some(),
"preview available while video source attached"
);
let mut keepalive = broadcast.preview();
let mut pump = None;
let store = VideoFrameStore::new();
store.set(LOCAL_PREVIEW_KEY, 4, 4, vec![0u8; 4 * 4 * 4].into());
#[cfg(target_os = "android")]
let mut guard = None;
release_local_camera(
&broadcast,
&mut keepalive,
&mut pump,
&store,
#[cfg(target_os = "android")]
&mut guard,
);
assert!(keepalive.is_none());
assert!(
broadcast.preview().is_none(),
"video.clear must drop the source so privacy LED can go dark"
);
assert!(
!store.snapshot().iter().any(|(k, _)| k == LOCAL_PREVIEW_KEY),
"local preview frame must be cleared on release"
);
}
}
|