Method getKernelsFromAzimuth

src/internal/src/HRTFPanner.cpp:409–443

}

void HRTFElevation::getKernelsFromAzimuth(double azimuthBlend, unsigned azimuthIndex, HRTFKernel *& kernelL, HRTFKernel *& kernelR, double & frameDelayL, double & frameDelayR)
{
    bool checkAzimuthBlend = azimuthBlend >= 0.0 && azimuthBlend < 1.0;
    ASSERT(checkAzimuthBlend);
    if (!checkAzimuthBlend)
    {
        azimuthBlend = 0.0;
    }

    size_t numKernels = m_kernelListL->size();

    bool isIndexGood = azimuthIndex < numKernels;
    ASSERT(isIndexGood);
    if (!isIndexGood)
    {
        kernelL = 0;
        kernelR = 0;
        return;
    }

    // Return the left and right kernels.
    kernelL = m_kernelListL->at(azimuthIndex).get();
    kernelR = m_kernelListR->at(azimuthIndex).get();

    frameDelayL = m_kernelListL->at(azimuthIndex)->frameDelay();
    frameDelayR = m_kernelListR->at(azimuthIndex)->frameDelay();

    int azimuthIndex2 = (azimuthIndex + 1) % numKernels;
    double frameDelay2L = m_kernelListL->at(azimuthIndex2)->frameDelay();
    double frameDelay2R = m_kernelListR->at(azimuthIndex2)->frameDelay();

    // Linearly interpolate delays.
    frameDelayL = (1.0 - azimuthBlend) * frameDelayL + azimuthBlend * frameDelay2L;
    frameDelayR = (1.0 - azimuthBlend) * frameDelayR + azimuthBlend * frameDelay2R;
}