Function lazyInit

fmod/src/spatialize_effect.cpp:206–416

};

InitFlags lazyInit(FMOD_DSP_STATE* state,
                   int numChannelsIn,
                   int numChannelsOut)
{
    auto initFlags = INIT_NONE;

    IPLAudioSettings audioSettings;
    state->functions->getsamplerate(state, &audioSettings.samplingRate);
    state->functions->getblocksize(state, reinterpret_cast<unsigned int*>(&audioSettings.frameSize));

    if (!gContext && isRunningInEditor())
    {
        initContextAndDefaultHRTF(audioSettings);
    }

    if (!gContext)
        return initFlags;

    if (!gHRTF[1])
        return initFlags;

    auto effect = reinterpret_cast<State*>(state->plugindata);

    auto status = IPL_STATUS_SUCCESS;

    if (numChannelsOut > 0)
    {
        if (effect->panningEffect && effect->panningEffectSettingsBackup.speakerLayout.type != speakerLayoutForNumChannels(numChannelsOut).type)
        {
            iplPanningEffectReset(effect->panningEffect);
            iplPanningEffectRelease(&effect->panningEffect);
        }

        if (!effect->panningEffect)
        {
            IPLPanningEffectSettings effectSettings{};
            effectSettings.speakerLayout = speakerLayoutForNumChannels(numChannelsOut);

            status = iplPanningEffectCreate(gContext, &audioSettings, &effectSettings, &effect->panningEffect);

            effect->panningEffectSettingsBackup = effectSettings;
        }

        if (status == IPL_STATUS_SUCCESS)
        {
            if (!effect->binauralEffect)
            {
                IPLBinauralEffectSettings effectSettings;
                effectSettings.hrtf = gHRTF[1];

                status = iplBinauralEffectCreate(gContext, &audioSettings, &effectSettings, &effect->binauralEffect);
            }
        }

        if (status == IPL_STATUS_SUCCESS)
            initFlags = static_cast<InitFlags>(initFlags | INIT_BINAURALEFFECT);
    }