Method createOfxImageEffectInstance

Engine/OfxEffectInstance.cpp:340–609

}

void
OfxEffectInstance::createOfxImageEffectInstance(OFX::Host::ImageEffect::ImageEffectPlugin* plugin,
                                                OFX::Host::ImageEffect::Descriptor* desc,
                                                ContextEnum context,
                                                const NodeSerialization* serialization,
                                                const CreateNodeArgs& args
#ifndef NATRON_ENABLE_IO_META_NODES
                                                ,
                                                bool allowFileDialogs,
                                                bool *hasUsedFileDialog
#endif
                                                )
{
    /*Replicate of the code in OFX::Host::ImageEffect::ImageEffectPlugin::createInstance.
       We need to pass more parameters to the constructor . That means we cannot
       create it in the virtual function newInstance. Thus we create it before
       instanciating the OfxImageEffect. The problem is that calling OFX::Host::ImageEffect::ImageEffectPlugin::createInstance
       creates the OfxImageEffect and calls populate(). populate() will actually create all OfxClipInstance and OfxParamInstance.
       All these subclasses need a valid pointer to an this. Hence we need to set the pointer to this in
       OfxImageEffect BEFORE calling populate().
     */

    ///Only called from the main thread.
    assert( QThread::currentThread() == qApp->thread() );
    assert(plugin && desc && context != eContextNone);


    _imp->context = context;

    if (context == eContextWriter) {
        _imp->isOutput = true;
    }
    if (context == eContextWriter || context == eContextReader) {
        // Writers don't support render scale (full-resolution images are written to disk)
        // Readers don't support render scale otherwise each mipmap level would require a file decoding
        setSupportsRenderScaleMaybe(eSupportsNo);
    }

    std::string images;

    try {
        _imp->effect.reset( new OfxImageEffectInstance(plugin, *desc, mapContextToString(context), false) );
        assert(_imp->effect);

        boost::shared_ptr<OfxEffectInstance> thisShared = boost::dynamic_pointer_cast<OfxEffectInstance>( shared_from_this() );
        _imp->effect->setOfxEffectInstance(thisShared);

        _imp->natronPluginID = plugin->getIdentifier();

        OfxEffectInstance::MappedInputV clips = inputClipsCopyWithoutOutput();
        _imp->nbSourceClips = (int)clips.size();

        _imp->clipsInfos.resize( clips.size() );
        for (unsigned i = 0; i < clips.size(); ++i) {
            OfxEffectInstancePrivate::ClipsInfo info;
            info.optional = clips[i]->isOptional() || info.rotoBrush;
            info.mask = clips[i]->isMask();
            info.rotoBrush = clips[i]->getName() == CLIP_OFX_ROTO && getNode()->isRotoNode();