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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) 2016, Intel Corporation, all rights reserved.
// Third party copyrights are property of their respective owners.
/*
Implementation of various functions which are related to Tensorflow models reading.
*/
#ifdef HAVE_PROTOBUF
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/zero_copy_stream_impl.h>
#include <google/protobuf/text_format.h>
#include <opencv2/core.hpp>
#include <map>
#include <string>
#include <fstream>
#include <vector>
#include "graph.pb.h"
#include "tf_io.hpp"
#include "../caffe/glog_emulator.hpp"
namespace cv {
namespace dnn {
using std::string;
using std::map;
using namespace tensorflow;
using namespace ::google::protobuf;
using namespace ::google::protobuf::io;
const int kProtoReadBytesLimit = INT_MAX; // Max size of 2 GB minus 1 byte.
// TODO: remove Caffe duplicate
bool ReadProtoFromBinaryFileTF(const char* filename, Message* proto) {
std::ifstream fs(filename, std::ifstream::in | std::ifstream::binary);
CHECK(fs.is_open()) << "Can't open \"" << filename << "\"";
ZeroCopyInputStream* raw_input = new IstreamInputStream(&fs);
CodedInputStream* coded_input = new CodedInputStream(raw_input);
coded_input->SetTotalBytesLimit(kProtoReadBytesLimit, 536870912);
bool success = proto->ParseFromCodedStream(coded_input);
delete coded_input;
delete raw_input;
fs.close();
return success;
}
void ReadTFNetParamsFromBinaryFileOrDie(const char* param_file,
tensorflow::GraphDef* param) {
CHECK(ReadProtoFromBinaryFileTF(param_file, param))
<< "Failed to parse GraphDef file: " << param_file;
}
}
}
#endif