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Fixed linux audio

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This commit is contained in:
selimaj-dev
2026-08-28 14:24:20 -04:00
parent 0fd06766e3
commit 12fb17c9c3
1 changed files with 254 additions and 46 deletions
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src-tauri/src/commands/audio.rs
+254 -46
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@@ -10,7 +10,10 @@ use std::{
};
use chacha20poly1305::{aead::KeyInit, ChaCha20Poly1305, Key};
use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
use cpal::{
traits::{DeviceTrait, HostTrait, StreamTrait},
FromSample, SampleFormat, SizedSample,
};
use ringbuf::{
storage::Heap,
traits::{Consumer, Observer, Producer, Split},
@@ -178,24 +181,67 @@ fn build_input_stream(
producer: AudioProducer,
state_inner: Arc<VoiceStateInner>,
) -> Result<cpal::Stream, String> {
let sample_format = device
.default_input_config()
.map_err(|e| format!("Failed to get input config: {e}"))?
.sample_format();
match sample_format {
SampleFormat::F32 => build_input_stream_with::<f32>(device, config, producer, state_inner),
SampleFormat::I16 => build_input_stream_with::<i16>(device, config, producer, state_inner),
SampleFormat::I32 => build_input_stream_with::<i32>(device, config, producer, state_inner),
SampleFormat::I64 => build_input_stream_with::<i64>(device, config, producer, state_inner),
SampleFormat::U8 => build_input_stream_with::<u8>(device, config, producer, state_inner),
SampleFormat::U16 => build_input_stream_with::<u16>(device, config, producer, state_inner),
SampleFormat::U32 => build_input_stream_with::<u32>(device, config, producer, state_inner),
SampleFormat::U64 => build_input_stream_with::<u64>(device, config, producer, state_inner),
format => Err(format!("Unsupported input sample format: {format}")),
}
}
fn build_input_stream_with<T>(
device: &cpal::Device,
config: cpal::StreamConfig,
producer: AudioProducer,
state_inner: Arc<VoiceStateInner>,
) -> Result<cpal::Stream, String>
where
T: SizedSample + Send + 'static,
f32: FromSample<T>,
{
let native_sample_rate = config.sample_rate;
let channels = config.channels as usize;
let mut resampler = LinearResampler::new();
let mut mono_buffer = Vec::with_capacity(2048);
let mut resampled_buffer = Vec::with_capacity(2048);
let mut callback_count: u64 = 0;
let inner_input_err = Arc::clone(&state_inner);
device
.build_input_stream(
config,
move |data: &[f32], _| {
move |data: &[T], _| {
callback_count += 1;
if callback_count % 200 == 0 {
let peak: f32 = data
.iter()
.map(|&s| s.to_sample::<f32>().abs())
.fold(0.0f32, f32::max);
eprintln!(
"[vc] input callback #{callback_count}: {} frames, {} ch, peak {:.4}",
data.len() / channels,
channels,
peak
);
}
mono_buffer.clear();
resampled_buffer.clear();
// Downmix channels to mono
// Downmix channels to mono, converting to f32
for chunk in data.chunks_exact(channels) {
let sum: f32 = chunk.iter().sum();
let sum: f32 = chunk.iter().map(|&s| s.to_sample::<f32>()).sum();
mono_buffer.push(sum / channels as f32);
}
@@ -213,13 +259,21 @@ fn build_input_stream(
},
move |err| {
eprintln!("[vc] Input error: {err}. Attempting recovery...");
if let Ok(mut lock) = inner_input_err.session.lock() {
let rec = Arc::clone(&inner_input_err);
thread::spawn(move || {
// Give the errored stream a moment to unwind before rebuilding.
thread::sleep(Duration::from_millis(10));
let Ok(mut lock) = rec.session.lock() else {
return;
};
if let Some(session) = lock.as_mut() {
if session.shutdown.load(Ordering::SeqCst) {
return;
}
let target_device = session.current_input_device.clone();
let _ = session
.update_input_device(target_device, Arc::clone(&inner_input_err));
let _ = session.update_input_device(target_device, Arc::clone(&rec));
}
}
});
},
None,
)
@@ -233,25 +287,64 @@ fn build_output_stream(
consumer: AudioConsumer,
state_inner: Arc<VoiceStateInner>,
) -> Result<cpal::Stream, String> {
let sample_format = device
.default_output_config()
.map_err(|e| format!("Failed to get output config: {e}"))?
.sample_format();
match sample_format {
SampleFormat::F32 => build_output_stream_with::<f32>(device, config, consumer, state_inner),
SampleFormat::I16 => build_output_stream_with::<i16>(device, config, consumer, state_inner),
SampleFormat::I32 => build_output_stream_with::<i32>(device, config, consumer, state_inner),
SampleFormat::I64 => build_output_stream_with::<i64>(device, config, consumer, state_inner),
SampleFormat::U8 => build_output_stream_with::<u8>(device, config, consumer, state_inner),
SampleFormat::U16 => build_output_stream_with::<u16>(device, config, consumer, state_inner),
SampleFormat::U32 => build_output_stream_with::<u32>(device, config, consumer, state_inner),
SampleFormat::U64 => build_output_stream_with::<u64>(device, config, consumer, state_inner),
format => Err(format!("Unsupported output sample format: {format}")),
}
}
fn build_output_stream_with<T>(
device: &cpal::Device,
config: cpal::StreamConfig,
consumer: AudioConsumer,
state_inner: Arc<VoiceStateInner>,
) -> Result<cpal::Stream, String>
where
T: SizedSample + Send + 'static,
T: FromSample<f32>,
{
let native_sample_rate = config.sample_rate;
let channels = config.channels as usize;
let mut resampler = LinearResampler::new();
let mut raw_mono_samples = Vec::with_capacity(2048);
let mut resampled_mono = Vec::with_capacity(2048);
let mut last_sample = 0.0f32;
let mut callback_count: u64 = 0;
let inner_output_err = Arc::clone(&state_inner);
device
.build_output_stream(
config,
move |data: &mut [f32], _| {
move |data: &mut [T], _| {
callback_count += 1;
if callback_count % 200 == 0 {
eprintln!(
"[vc] output callback #{callback_count}: {} frames, {} ch",
data.len() / channels,
channels
);
}
let required_mono_samples = (data.len() / channels) * TARGET_SAMPLE_RATE as usize
/ native_sample_rate as usize;
raw_mono_samples.clear();
resampled_mono.clear();
let mut underflow_count = 0usize;
if let Ok(mut cons) = consumer.lock() {
for _ in 0..required_mono_samples {
if let Some(s) = cons.try_pop() {
@@ -261,9 +354,18 @@ fn build_output_stream(
// Exponential decay to prevent clicking when underflowing
last_sample *= 0.92;
raw_mono_samples.push(last_sample);
underflow_count += 1;
}
}
}
if callback_count % 200 == 0 {
eprintln!(
"[vc] output: got {}/{} mono samples ({} underflow)",
required_mono_samples - underflow_count,
required_mono_samples,
underflow_count
);
}
// Resample from 48kHz mono to target native output rate
resampler.process(
@@ -280,7 +382,7 @@ fn build_output_stream(
let mono_val = resampled_mono[res_idx];
for ch in 0..channels {
if out_idx + ch < data.len() {
data[out_idx + ch] = mono_val;
data[out_idx + ch] = T::from_sample(mono_val);
}
}
out_idx += channels;
@@ -289,13 +391,20 @@ fn build_output_stream(
},
move |err| {
eprintln!("[vc] Output error: {err}. Attempting recovery...");
if let Ok(mut lock) = inner_output_err.session.lock() {
let rec = Arc::clone(&inner_output_err);
thread::spawn(move || {
thread::sleep(Duration::from_millis(10));
let Ok(mut lock) = rec.session.lock() else {
return;
};
if let Some(session) = lock.as_mut() {
if session.shutdown.load(Ordering::SeqCst) {
return;
}
let target_device = session.current_output_device.clone();
let _ = session
.update_output_device(target_device, Arc::clone(&inner_output_err));
let _ = session.update_output_device(target_device, Arc::clone(&rec));
}
}
});
},
None,
)
@@ -324,18 +433,22 @@ pub fn list_output_devices() -> Result<Vec<String>, String> {
#[tauri::command]
pub fn disconnect_from_vc(voice_state: State<'_, VoiceState>) -> Result<(), String> {
let mut lock = voice_state
.inner
.session
.lock()
.map_err(|e| e.to_string())?;
let session = {
let mut lock = voice_state
.inner
.session
.lock()
.map_err(|e| e.to_string())?;
lock.take()
};
if let Some(session) = lock.take() {
if let Some(session) = session {
session.shutdown.store(true, Ordering::SeqCst);
let _ = session.input_stream.pause();
if let Ok(output) = session.output_stream.lock() {
let _ = output.pause();
}
eprintln!("[vc] disconnected and paused streams");
}
Ok(())
@@ -349,59 +462,102 @@ pub fn connect_to_vc(
config_state: State<'_, ConfigState>,
voice_state: State<'_, VoiceState>,
) -> Result<(), String> {
disconnect_from_vc(voice_state.clone())?;
eprintln!("[vc] connect_to_vc called hostname={hostname} pin={pin}");
let key = Key::try_from(shared_secret.as_slice()).map_err(|v| v.to_string())?;
if let Err(e) = disconnect_from_vc(voice_state.clone()) {
eprintln!("[vc] disconnect_from_vc failed: {e}");
}
let key = match Key::try_from(shared_secret.as_slice()) {
Ok(k) => k,
Err(v) => {
let msg = v.to_string();
eprintln!("[vc] invalid key length: {msg}");
return Err(msg);
}
};
let cipher = Arc::new(Mutex::new(SessionCipher::new(ChaCha20Poly1305::new(&key))));
let config = config_state.0.lock().unwrap().clone();
let state_inner = Arc::clone(&voice_state.inner);
let socket = Arc::new(
UdpSocket::bind("0.0.0.0:0").map_err(|e| format!("Failed to bind UDP socket: {e}"))?,
);
socket
.connect(&hostname)
.map_err(|e| format!("Failed to connect UDP socket: {e}"))?;
socket
.set_read_timeout(Some(Duration::from_millis(5)))
.map_err(|e| e.to_string())?;
socket
.send(&pin.to_be_bytes())
.map_err(|e| format!("Failed to send pin: {e}"))?;
let socket = match UdpSocket::bind("0.0.0.0:0") {
Ok(s) => s,
Err(e) => {
let msg = format!("Failed to bind UDP socket: {e}");
eprintln!("[vc] {msg}");
return Err(msg);
}
};
let socket = Arc::new(socket);
if let Err(e) = socket.connect(&hostname) {
let msg = format!("Failed to connect UDP socket: {e}");
eprintln!("[vc] {msg}");
return Err(msg);
}
if let Err(e) = socket.set_read_timeout(Some(Duration::from_millis(5))) {
let msg = e.to_string();
eprintln!("[vc] set_read_timeout failed: {msg}");
return Err(msg);
}
if let Err(e) = socket.send(&pin.to_be_bytes()) {
let msg = format!("Failed to send pin: {e}");
eprintln!("[vc] {msg}");
return Err(msg);
}
let host = cpal::default_host();
let input_device = match &config.input_device_name {
Some(name) => host
.input_devices()
.map_err(|e| e.to_string())?
.map_err(|e| {
let msg = e.to_string();
eprintln!("[vc] failed to enumerate input devices: {msg}");
msg
})?
.find(|d| {
d.description()
.ok()
.map(|x| x.name() == *name)
.unwrap_or(false)
})
.ok_or("Input device not found")?,
None => host
.default_input_device()
.ok_or("No default input device")?,
.ok_or_else(|| {
let msg = format!("Input device not found: {name}");
eprintln!("[vc] {msg}");
msg
})?,
None => host.default_input_device().ok_or_else(|| {
let msg = "No default input device".to_string();
eprintln!("[vc] {msg}");
msg
})?,
};
let output_device = match &config.output_device_name {
Some(name) => host
.output_devices()
.map_err(|e| e.to_string())?
.map_err(|e| {
let msg = e.to_string();
eprintln!("[vc] failed to enumerate output devices: {msg}");
msg
})?
.find(|d| {
d.description()
.ok()
.map(|x| x.name() == *name)
.unwrap_or(false)
})
.ok_or("Output device not found")?,
None => host
.default_output_device()
.ok_or("No default output device")?,
.ok_or_else(|| {
let msg = format!("Output device not found: {name}");
eprintln!("[vc] {msg}");
msg
})?,
None => host.default_output_device().ok_or_else(|| {
let msg = "No default output device".to_string();
eprintln!("[vc] {msg}");
msg
})?,
};
let shutdown = Arc::new(AtomicBool::new(false));
@@ -417,6 +573,12 @@ pub fn connect_to_vc(
.map_err(|e| format!("Failed to get default output config: {e}"))?
.config();
eprintln!(
"[vc] Output device {:?} config: {} Hz, {} ch",
output_device.description().map(|d| d.name().to_string()),
output_config.sample_rate,
output_config.channels
);
let output_stream = build_output_stream(
&output_device,
output_config,
@@ -437,6 +599,12 @@ pub fn connect_to_vc(
.map_err(|e| format!("Failed to get default input config: {e}"))?
.config();
eprintln!(
"[vc] Input device {:?} config: {} Hz, {} ch",
input_device.description().map(|d| d.name().to_string()),
input_config.sample_rate,
input_config.channels
);
let input_stream = build_input_stream(
&input_device,
input_config,
@@ -454,6 +622,9 @@ pub fn connect_to_vc(
let mut sequence = 0u32;
let mut frame_buf = vec![0.0f32; PACKET_SAMPLES];
let mut hangover_counter = 0;
let mut loop_count: u64 = 0;
// Adaptive VAD: track a slow-moving noise floor so quiet mics still trigger.
let mut noise_floor: f32 = 0.0;
while !shutdown.load(Ordering::Relaxed) {
if consumer_in.occupied_len() >= PACKET_SAMPLES {
@@ -462,7 +633,17 @@ pub fn connect_to_vc(
let sum_squares: f32 = frame_buf.iter().map(|&s| s * s).sum();
let rms = (sum_squares / PACKET_SAMPLES as f32).sqrt();
let is_speaking = if rms >= VAD_THRESHOLD {
// Update noise floor (attack fast, release slow).
if noise_floor == 0.0 {
noise_floor = rms;
} else if rms < noise_floor {
noise_floor = noise_floor * 0.9 + rms * 0.1;
} else {
noise_floor = noise_floor * 0.999;
}
let threshold = (noise_floor * 4.0).max(VAD_THRESHOLD);
let is_speaking = if rms >= threshold {
hangover_counter = VAD_HANGOVER_FRAMES;
true
} else if hangover_counter > 0 {
@@ -472,6 +653,14 @@ pub fn connect_to_vc(
false
};
loop_count += 1;
if loop_count % 200 == 0 {
eprintln!(
"[vc] sender: buffered {} samples, frame rms {rms:.4}, floor {noise_floor:.4}, thr {threshold:.4}, speaking {is_speaking}, seq {sequence}",
consumer_in.occupied_len()
);
}
if is_speaking {
// sequence goes INSIDE the plaintext now, prefixed before the PCM
let mut plaintext = Vec::with_capacity(4 + PACKET_SAMPLES * 2);
@@ -488,7 +677,15 @@ pub fn connect_to_vc(
continue;
};
let _ = input_socket.send(&net_packet);
let sent = input_socket.send(&net_packet);
if let Err(e) = sent {
eprintln!("[vc] sender: send failed: {e}");
} else if loop_count % 200 == 0 {
eprintln!(
"[vc] sender: sent packet seq {sequence} ({} bytes)",
net_packet.len()
);
}
sequence = sequence.wrapping_add(1);
}
} else {
@@ -511,9 +708,13 @@ pub fn connect_to_vc(
let mut last_good_frame = vec![0.0f32; PACKET_SAMPLES];
let mut udp_buffer = [0u8; MAX_PACKET_SIZE];
let mut next_frame_time = Instant::now();
let mut recv_count: u64 = 0;
let mut loop_count: u64 = 0;
while !shutdown.load(Ordering::Relaxed) {
loop_count += 1;
if let Ok(len) = socket.recv(&mut udp_buffer) {
recv_count += 1;
match cipher.lock().unwrap().decrypt(&udp_buffer[..len]) {
Ok(plaintext) => {
if plaintext.len() < 4 {
@@ -536,6 +737,13 @@ pub fn connect_to_vc(
}
}
if loop_count % 2000 == 0 {
eprintln!(
"[vc] receiver: received {recv_count} packets total, {} buffered, prebuffering {is_prebuffering}, expected {expected:?}",
packets.len()
);
}
if is_prebuffering {
if packets.len() >= INITIAL_PACKET_CUSHION {
expected = packets.keys().next().copied();