Harden dependency and supply-chain policy (#100)

crates/libremetaverse-voice-webrtc/src/native.rs

@@ -7,8 +7,7 @@
 #![allow(clippy::too_many_arguments)] // The RTC loop receives independent owned I/O resources.
 #![allow(clippy::too_many_lines)] // Linear loops preserve the WebRTC mutation/drain ordering.
 
-use audiopus::coder::{Decoder, Encoder};
-use audiopus::{Application, Channels, SampleRate};
+use libremetaverse_opus::{Channels, Decoder, Encoder};
 use libremetaverse_types::UUID;
 use serde::{Deserialize, Serialize};
 use serde_json::{Map, Value, json};
@@ -262,7 +261,7 @@ pub struct OpusFrame(pub Vec<u8>);
 
 /// Encodes PCM into WebRTC Opus frames using native libopus.
 pub fn encode_pcm_48k_mono(samples: &[i16]) -> Result<Vec<OpusFrame>, WebRtcError> {
-    let encoder = Encoder::new(SampleRate::Hz48000, Channels::Mono, Application::Voip)
+    let mut encoder = Encoder::voip(SAMPLE_RATE, Channels::Mono)
         .map_err(|error| WebRtcError::Audio(error.to_string()))?;
     let mut padded = samples.to_vec();
     let remainder = padded.len() % FRAME_SAMPLES;
@@ -783,8 +782,8 @@ async fn run_client(
 ) {
     let mut buffer = vec![0_u8; 65_536];
     let mut playback: Option<Playback> = None;
-    let mut decoder = Decoder::new(SampleRate::Hz48000, Channels::Mono).ok();
-    let encoder = Encoder::new(SampleRate::Hz48000, Channels::Mono, Application::Voip).ok();
+    let mut decoder = Decoder::new(SAMPLE_RATE, Channels::Mono).ok();
+    let mut encoder = Encoder::voip(SAMPLE_RATE, Channels::Mono).ok();
     let mut captured_elapsed = Duration::ZERO;
     let mut running = true;
     while running {
@@ -833,7 +832,7 @@ async fn run_client(
                 None => running = false,
             },
             captured = capture.recv() => {
-                if let (Some(pcm), Some(codec)) = (captured, encoder.as_ref())
+                if let (Some(pcm), Some(codec)) = (captured, encoder.as_mut())
                     && pcm.len() == FRAME_SAMPLES
                 {
                         let mut packet = vec![0_u8; 4_000];
@@ -1731,7 +1730,7 @@ mod tests {
     fn wav_is_resampled_and_encoded_as_valid_opus() {
         let frames = encode_wav_bytes(&wav_fixture()).unwrap();
         assert_eq!(frames.len(), 5);
-        let mut decoder = Decoder::new(SampleRate::Hz48000, Channels::Mono).unwrap();
+        let mut decoder = Decoder::new(SAMPLE_RATE, Channels::Mono).unwrap();
         let mut samples = vec![0_i16; FRAME_SAMPLES * 6];
         assert_eq!(
             decoder