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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.
//
// Copyright (C) 2017, Intel Corporation, all rights reserved.
// Third party copyrights are property of their respective owners.
#include "../precomp.hpp"
#ifdef HAVE_PROTOBUF
#include <fstream>
#include "caffe_io.hpp"
#endif
namespace cv { namespace dnn {
CV__DNN_EXPERIMENTAL_NS_BEGIN
#ifdef HAVE_PROTOBUF
void shrinkCaffeModel(const String& src, const String& dst, const std::vector<String>& layersTypes)
{
CV_TRACE_FUNCTION();
std::vector<String> types(layersTypes);
if (types.empty())
{
types.push_back("Convolution");
types.push_back("InnerProduct");
}
caffe::NetParameter net;
ReadNetParamsFromBinaryFileOrDie(src.c_str(), &net);
for (int i = 0; i < net.layer_size(); ++i)
{
caffe::LayerParameter* lp = net.mutable_layer(i);
if (std::find(types.begin(), types.end(), lp->type()) == types.end())
{
continue;
}
for (int j = 0; j < lp->blobs_size(); ++j)
{
caffe::BlobProto* blob = lp->mutable_blobs(j);
CV_Assert(blob->data_size() != 0); // float32 array.
Mat floats(1, blob->data_size(), CV_32FC1, (void*)blob->data().data());
Mat halfs(1, blob->data_size(), CV_16SC1);
convertFp16(floats, halfs); // Convert to float16.
blob->clear_data(); // Clear float32 data.
// Set float16 data.
blob->set_raw_data(halfs.data, halfs.total() * halfs.elemSize());
blob->set_raw_data_type(caffe::FLOAT16);
}
}
size_t msgSize = net.ByteSizeLong();
std::vector<uint8_t> output(msgSize);
net.SerializeWithCachedSizesToArray(&output[0]);
std::ofstream ofs(dst.c_str(), std::ios::binary);
ofs.write((const char*)&output[0], msgSize);
ofs.close();
}
#else
void shrinkCaffeModel(const String& src, const String& dst, const std::vector<String>& types)
{
CV_Error(cv::Error::StsNotImplemented, "libprotobuf required to import data from Caffe models");
}
#endif // HAVE_PROTOBUF
CV__DNN_EXPERIMENTAL_NS_END
}} // namespace