Struct OpusEncoder 

pub struct OpusEncoder { /* private fields */ }

Stateful Opus encoder with the fixed WaveKat voice profile.

Unlike G711Codec this is not Copy — libopus carries inter-frame prediction state, so one encoder serves exactly one outbound stream and must be fed every frame in order.

Implementations

impl OpusEncoder

pub fn new() -> Result<Self, CoreError>

Create an encoder with the locked profile: 16 kHz mono VoIP, ~28 kbps, in-band FEC on (with expected loss set so it actually engages), DTX off.

pub fn encode( &mut self, pcm: &[i16], out: &mut Vec<u8>, ) -> Result<usize, CoreError>

Encode exactly one 20 ms frame (OPUS_FRAME_SAMPLES samples at OPUS_PCM_SAMPLE_RATE) into one Opus packet. Appends the packet bytes to out and returns the packet length.

The length is enforced because libopus only accepts legal frame durations and the WaveKat send path packetizes at 20 ms; a wrong slice length here is always a caller bug, not a stream condition.