Method offlineRender

src/core/NullDeviceNode.cpp:142–178

}

void NullDeviceNode::offlineRender()
{
    ASSERT(m_renderBus.get());
    if (!m_renderBus.get())
        return;

    bool isRenderBusAllocated = m_renderBus->length() >= offlineRenderSizeQuantum;
    ASSERT(isRenderBusAllocated);
    if (!isRenderBusAllocated)
        return;

    bool isAudioContextInitialized = m_context->isInitialized();
    ASSERT(isAudioContextInitialized);
    if (!isAudioContextInitialized)
        return;

    // Break up the desired length into smaller "render quantum" sized pieces.
    int framesToProcess = static_cast<int>((m_lengthSeconds * outConfig.desired_samplerate) / offlineRenderSizeQuantum);

    LOG_TRACE("offline rendering started");

    while (framesToProcess > 0 && !shouldExit)
    {
        m_context->update();
        render(0, m_renderBus.get(), offlineRenderSizeQuantum, info);

        // Update sampling info
        const int index = 1 - (info.current_sample_frame & 1);
        const uint64_t t = info.current_sample_frame & ~1;
        info.current_sample_frame = t + offlineRenderSizeQuantum + index;
        info.current_time = info.current_sample_frame / static_cast<double>(info.sampling_rate);
        info.epoch[index] += std::chrono::nanoseconds {static_cast<uint64_t>(
            1.e9 * (double) framesToProcess / (double) offlineRenderSizeQuantum)};

        framesToProcess--;
    }
}

void NullDeviceNode::offlineRenderFrames(size_t framesToProcess)
{