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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
#include "precomp.hpp"
#include <opencv2/dnn/layer_reg.private.hpp> // getLayerFactoryImpl
namespace cv {
namespace dnn {
CV__DNN_INLINE_NS_BEGIN
Mutex& getLayerFactoryMutex()
{
static Mutex* volatile instance = NULL;
if (instance == NULL)
{
cv::AutoLock lock(getInitializationMutex());
if (instance == NULL)
instance = new Mutex();
}
return *instance;
}
static LayerFactory_Impl& getLayerFactoryImpl_()
{
static LayerFactory_Impl impl;
return impl;
}
LayerFactory_Impl& getLayerFactoryImpl()
{
static LayerFactory_Impl* volatile instance = NULL;
if (instance == NULL)
{
cv::AutoLock lock(getLayerFactoryMutex());
if (instance == NULL)
{
instance = &getLayerFactoryImpl_();
initializeLayerFactory();
}
}
return *instance;
}
void LayerFactory::registerLayer(const String& type, Constructor constructor)
{
CV_TRACE_FUNCTION();
CV_TRACE_ARG_VALUE(type, "type", type.c_str());
cv::AutoLock lock(getLayerFactoryMutex());
LayerFactory_Impl::iterator it = getLayerFactoryImpl().find(type);
if (it != getLayerFactoryImpl().end())
{
if (it->second.back() == constructor)
CV_Error(cv::Error::StsBadArg, "Layer \"" + type + "\" already was registered");
it->second.push_back(constructor);
}
getLayerFactoryImpl().insert(std::make_pair(type, std::vector<Constructor>(1, constructor)));
}
void LayerFactory::unregisterLayer(const String& type)
{
CV_TRACE_FUNCTION();
CV_TRACE_ARG_VALUE(type, "type", type.c_str());
cv::AutoLock lock(getLayerFactoryMutex());
LayerFactory_Impl::iterator it = getLayerFactoryImpl().find(type);
if (it != getLayerFactoryImpl().end())
{
if (it->second.size() > 1)
it->second.pop_back();
else
getLayerFactoryImpl().erase(it);
}
}
bool LayerFactory::isLayerRegistered(const std::string& type)
{
cv::AutoLock lock(getLayerFactoryMutex());
auto& registeredLayers = getLayerFactoryImpl();
return registeredLayers.find(type) != registeredLayers.end();
}
Ptr<Layer> LayerFactory::createLayerInstance(const String& type, LayerParams& params)
{
CV_TRACE_FUNCTION();
CV_TRACE_ARG_VALUE(type, "type", type.c_str());
cv::AutoLock lock(getLayerFactoryMutex());
LayerFactory_Impl::const_iterator it = getLayerFactoryImpl().find(type);
if (it != getLayerFactoryImpl().end())
{
CV_Assert(!it->second.empty());
return it->second.back()(params);
}
else
{
return Ptr<Layer>(); // NULL
}
}
CV__DNN_INLINE_NS_END
}} // namespace cv::dnn
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