Method threadLoopOnce

Gui/PreviewThread.cpp:99–136

}

GenericSchedulerThread::ThreadStateEnum
PreviewThread::threadLoopOnce(const GenericThreadStartArgsPtr& inArgs)
{
    ComputePreviewRequestPtr args = std::dynamic_pointer_cast<ComputePreviewRequest>(inArgs);

    assert(args);


    NodeGuiPtr node = args->node.lock();
    if (node) {
        ///Mark this thread as running
        appPTR->fetchAndAddNRunningThreads(1);

        //process the request if valid
        int w = NATRON_PREVIEW_WIDTH;
        int h = NATRON_PREVIEW_HEIGHT;

        //set buffer to 0
#ifndef __NATRON_WIN32__
        std::memset( &_imp->data.front(), 0, _imp->data.size() * sizeof(unsigned int) );
#else
        for (std::size_t i = 0; i < _imp->data.size(); ++i) {
            _imp->data[i] = qRgba(0, 0, 0, 255);
        }
#endif
        NodePtr internalNode = node->getNode();
        if (internalNode) {
            bool ok = internalNode->makePreviewImage( args->time, &w, &h, &_imp->data.front() );
            Q_UNUSED(ok);
            node->copyPreviewImageBuffer(_imp->data, w, h);
        }

        ///Unmark this thread as running
        appPTR->fetchAndAddNRunningThreads(-1);
    }

    return eThreadStateActive;
} // PreviewThread::threadLoopOnce

NATRON_NAMESPACE_EXIT