Vamp Plugin Tester

Tester::TestRegistrar<TestParametersOnReset>

TestParametersOnReset::m_registrar("E3 Parameter retention through reset");

Test::Results

TestParametersOnReset::test(string key, Options options)

{

    Plugin::FeatureSet f[2];

    int rate = 44100;

    Results r;

    float **data = 0;

    size_t channels = 0;

    size_t count = 100;

    for (int run = 0; run < 2; ++run) {

        auto_ptr<Plugin> p(load(key, rate));

	if (p->getParameterDescriptors().empty()) return r;

        // Set all parameters to non-default values

        Plugin::ParameterList pl = p->getParameterDescriptors();

        for (int i = 0; i < (int)pl.size(); ++i) {

            if (pl[i].defaultValue == pl[i].minValue) {

                p->setParameter(pl[i].identifier, pl[i].maxValue);

            } else {

                p->setParameter(pl[i].identifier, pl[i].minValue);

            }

        }

        if (!initAdapted(p.get(), channels, _step, _step, r)) return r;

        //  First run: construct, set params, init, process

        // Second run: construct, set params, init, reset, process

        // We expect these to produce the same results

        if (run == 1) p->reset();

        if (!data) data = createTestAudio(channels, _step, count);

        for (size_t i = 0; i < count; ++i) {

#ifdef __GNUC__

            float *ptr[channels];

#else

            float **ptr = (float **)alloca(channels * sizeof(float));

#endif

            size_t idx = i * _step;

            for (size_t c = 0; c < channels; ++c) ptr[c] = data[c] + idx;

            RealTime timestamp = RealTime::frame2RealTime(idx, rate);

            Plugin::FeatureSet fs = p->process(ptr, timestamp);

            appendFeatures(f[run], fs);

        }

        Plugin::FeatureSet fs = p->getRemainingFeatures();

        appendFeatures(f[run], fs);

    }

    if (data) destroyTestAudio(data, channels);

    if (!(f[0] == f[1])) {

        string message = "Call to reset after setting parameters, but before processing, changes the results (parameter values not retained through reset?)";

        Result res;

        if (options & NonDeterministic) res = note(message);

        else res = error(message);

        if (options & Verbose) dump(res, f[0], f[1]);

        r.push_back(res);

    } else {

        r.push_back(success());

    }

    return r;

}