EdisonJwa
7188a5a69d
Implementation of SDD-120 §1-§8: Bench harness (crates/chanora_audio/benches/): - common.rs: deterministic synthetic audio (440 Hz sine, no RNG). - realtime_capture.rs: bench_capture_alloc_count (dhat) + bench_capture_callback_wall_clock (criterion). - opus_codec.rs: bench_opus_encode_latency + bench_opus_decode_latency (direct audiopus, not AudioHandler — SDD-120 §3 item 4). - resampler.rs: bench_resampler_throughput across 44.1->48 / 16->48 / 48->48 passthrough. CI tooling (crates/chanora_audio/examples/): - emit_baseline.rs: aggregates criterion estimates.json outputs into the SRS-217 baseline schema. - compare_baseline.rs: applies SRS-219 tolerance, renders markdown table with 🟢/🟡/🔴 markers + yellow simpler-form realization per SDD-120 §8. Deviation from SDD-120 §2 / §5 / §7 placement: these tools live under examples/, not benches/ or src/bin/. Rationale: they must consume serde_json (a dev-only dep — production builds must not pull it). Cargo only resolves dev-dependencies for [[test]], [[bench]], and [[example]] targets; [[bin]] targets under src/bin/ see only regular [dependencies]. examples/ keeps the binaries out of the production dep tree while still giving them cargo run --example invocation. An SDD-120 amendment should reflect this. Workflows (.github/workflows/): - bench-advisory.yml: PR + push triggers; runs benches; posts a sticky PR comment via actions/github-script@v7; job status is always success (SRS-218 clause 4 — non-blocking). - bench-baseline-update.yml: workflow_dispatch only; runs benches; opens PR via peter-evans/create-pull-request@v6 (sole writer of the SAD-089 baseline JSON). Cargo.toml additions ([dev-dependencies] only — verified excluded from --release builds): criterion 0.5, dhat 0.3, serde_json 1. Source-code seam: minimal pub-but-#[doc(hidden)] bench_seam module in chanora_audio (engine.rs + lib.rs re-export) so the criterion bench harness can construct a CaptureState and drive CaptureState::ingest without re-implementing the engine (SDD-120 §3). Non-iOS targets only — CaptureState itself is iOS-gated. Initial baseline seed: crates/chanora_audio/benches/baselines/ x86_64-unknown-linux-gnu.json = {}. compare_baseline handles the missing-baseline case gracefully and emits a 'no red markers' report; the first manual dispatch of bench-baseline-update.yml after merge establishes the real values. Out of scope per SDD-120 §10: production telemetry export, build-failing hard CI gate, multi-host benchmarking, IDE integration, Dart-side bridge round-trip bench. Verification: - cargo check --workspace --all-targets: PASS. - cargo bench --bench realtime_capture --no-run: PASS. - cargo bench --bench opus_codec --no-run: PASS. - cargo bench --bench resampler --no-run: PASS. - cargo build --example emit_baseline --example compare_baseline -p chanora_audio: PASS. - cargo test --workspace: 106 passed, 0 failed, 3 ignored — no regression from prior count.
44 lines
1.6 KiB
Rust
44 lines
1.6 KiB
Rust
// SDD-120 §3 item 5 — resampler throughput bench.
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//
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// The chanora_audio engine uses a hand-rolled linear resampler
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// inside CaptureState (see engine.rs `resample_into_accum`); there
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// is no rubato dependency. The bench drives the same code path
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// via the §3 bench seam by instantiating CaptureBenchHandle at
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// different `in_sample_rate` values (44_100, 16_000, 48_000) and
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// feeding a 1-second buffer per iteration. Throughput is reported
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// as samples/sec via criterion's `Throughput::Elements`.
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use chanora_audio::bench_seam::CaptureBenchHandle;
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use criterion::{black_box, criterion_group, criterion_main, Criterion, Throughput};
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mod common;
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use common::synthetic_capture_buffer;
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fn bench_resampler_throughput(c: &mut Criterion) {
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let mut group = c.benchmark_group("resampler_throughput");
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for (label, in_rate, frames) in [
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("44100_to_48000", 44_100u32, 44_100usize),
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("16000_to_48000", 16_000u32, 16_000usize),
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("48000_passthrough", 48_000u32, 48_000usize),
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] {
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let buf = synthetic_capture_buffer(frames, 1);
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let mut handle = CaptureBenchHandle::new(in_rate, 1);
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// Pre-warm so the first allocation does not dominate.
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for _ in 0..4 {
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handle.ingest_f32(&buf);
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}
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group.throughput(Throughput::Elements(frames as u64));
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group.bench_function(label, |b| {
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b.iter(|| {
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handle.ingest_f32(black_box(&buf));
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});
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});
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}
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group.finish();
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}
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criterion_group!(resampler, bench_resampler_throughput);
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criterion_main!(resampler);
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