Method process

src/core/PannerNode.cpp:214–282

}

void PannerNode::process(ContextRenderLock & r, int bufferSize)
{
    AudioBus * destination = output(0)->bus(r);

    if (!isInitialized() || !input(0)->isConnected())
    {
        destination->zero();
        return;
    }

    AudioBus * source = input(0)->bus(r);

    if (!source)
    {
        destination->zero();
        return;
    }

    PanningModel curr = static_cast<PanningModel>(m_panningModel->valueUint32());
    auto db = r.context()->hrtfDatabaseLoader();
    if (curr == PanningModel::HRTF) {
        if (!db) {
            destination->zero();
            return;
        }
        if (!db->isLoaded()) {
            if (r.context()->isOfflineContext()) {
                // HRTFDatabase should be loaded before proceeding for offline audio context
                if (db)
                    db->waitForLoaderThreadCompletion();
            }
            else {
                destination->zero();
                return;
            }
        }

        if (!m_panner) {
            //uint32_t fftSize = HRTFPanner::fftSizeForSampleLength(db->database()->sampleSize());
            m_panner = std::unique_ptr<Panner>(new HRTFPanner(m_sampleRate)); //, fftSize));
        }
    }
    
    if (!m_panner)
    {
        destination->zero();
        return;
    }


    // Apply the panning effect.
    double azimuth;
    double elevation;
    getAzimuthElevation(r, &azimuth, &elevation);
    
    m_panner->pan(r, azimuth, elevation,
                  *source, *destination,
                  _scheduler._renderOffset, _scheduler._renderLength);