60 lines
2.0 KiB
Rust
60 lines
2.0 KiB
Rust
// SDD-120 §3 items 3-4 — Opus encode/decode latency benches.
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//
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// Both benches measure the codec-level call directly (audiopus
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// Encoder::encode_float / Decoder::decode_float) and not the
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// composite tsclientlib AudioHandler::fill_buffer call. Rationale
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// per SDD-120 §3 item 4: AudioHandler::fill_buffer conflates
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// jitter-buffer dequeue + Opus decode + PCM mix in a single call
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// and the wall-clock measurement would conflate three distinct
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// concerns. The canonical `opus_decode_latency` metric here is
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// codec-only.
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use audiopus::coder::{Decoder, Encoder};
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use audiopus::packet::Packet;
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use audiopus::{Application, Channels, MutSignals, SampleRate};
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use criterion::{black_box, criterion_group, criterion_main, Criterion};
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use std::convert::TryFrom;
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mod common;
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use common::{synthetic_opus_bytes, synthetic_opus_frame};
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fn bench_opus_encode_latency(c: &mut Criterion) {
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let enc = Encoder::new(SampleRate::Hz48000, Channels::Mono, Application::Voip)
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.expect("opus encoder init");
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let pcm = synthetic_opus_frame();
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let mut out = vec![0u8; 1275];
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c.bench_function("opus_encode_latency", |b| {
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b.iter(|| {
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let len = enc
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.encode_float(black_box(&pcm[..]), &mut out[..])
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.expect("encode");
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black_box(len);
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});
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});
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}
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fn bench_opus_decode_latency(c: &mut Criterion) {
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let mut dec = Decoder::new(SampleRate::Hz48000, Channels::Mono).expect("opus decoder init");
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let bytes = synthetic_opus_bytes();
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let mut pcm_out = vec![0.0f32; 960];
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c.bench_function("opus_decode_latency", |b| {
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b.iter(|| {
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let input = Packet::try_from(black_box(&bytes[..])).expect("packet");
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let output = MutSignals::try_from(&mut pcm_out[..]).expect("signals");
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let n = dec
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.decode_float(Some(input), output, false)
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.expect("decode");
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black_box(n);
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});
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});
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}
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criterion_group!(
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opus_codec,
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bench_opus_encode_latency,
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bench_opus_decode_latency
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);
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criterion_main!(opus_codec);
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