Function testTransientSanity

tests/client_comp_test.cpp:411–448

Sanity: no NaN/inf under a nasty transient sequence.

// Sanity: no NaN/inf under a nasty transient sequence.
void testTransientSanity()
{
    ClientComp comp;
    comp.prepare(kSampleRate);
    comp.setEnabled(true);
    comp.setThresholdDb(-24.0f);
    comp.setRatio(10.0f);
    comp.setKneeDb(6.0f);
    comp.setMakeupDb(12.0f);
    comp.setAttackMs(5.0f);
    comp.setReleaseMs(100.0f);
    comp.setLimiterEnabled(true);
    comp.setLimiterCeilingDb(-1.0f);

    const int frames = static_cast<int>(kSampleRate) * 2;
    std::vector<float> buf(frames * 2);
    const double twoPi = 6.283185307179586476;
    for (int i = 0; i < frames; ++i) {
        // Amplitude-modulated tone + spikes: stress envelope+limiter.
        const float env = 0.1f + 0.8f
            * static_cast<float>(std::fabs(std::sin(twoPi * 3.0 * i / kSampleRate)));
        const float s = env * static_cast<float>(
            std::sin(twoPi * 1000.0 * i / kSampleRate));
        buf[i * 2]     = s;
        buf[i * 2 + 1] = s;
    }

    processBlocks(comp, buf.data(), frames);

    const bool finite = !anyNaNorInf(buf.data(), frames);
    const float peak = peakAbsStereo(buf.data(), frames);
    report("stress: AM tone output is finite",
           finite,
           "");
    report("stress: output peak respects limiter ceiling (+1 dB headroom)",
           peak < 1.0f,
           "peak=" + std::to_string(peak));
}

// reset() must clear envelope so a new burst starts from silence.
void testResetClearsEnvelope()