116 lines
4.0 KiB
C++
116 lines
4.0 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// A command line utility to parse a text proto and output a binary proto.
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#include <stdlib.h>
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#include <fstream>
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#include <string>
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#include "mediapipe/framework/calculator.pb.h"
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#include "mediapipe/framework/port/advanced_proto_inc.h"
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#include "mediapipe/framework/port/canonical_errors.h"
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#include "mediapipe/framework/port/commandlineflags.h"
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#include "mediapipe/framework/port/ret_check.h"
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#include "mediapipe/framework/port/status.h"
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DEFINE_string(proto_source, "",
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"The template source file containing CalculatorGraphConfig "
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"protobuf text with inline template params.");
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DEFINE_string(
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proto_output, "",
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"An output template file in binary CalculatorGraphTemplate form.");
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#define EXIT_IF_ERROR(status) \
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if (!status.ok()) { \
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LOG(ERROR) << status; \
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return EXIT_FAILURE; \
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}
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namespace mediapipe {
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mediapipe::Status ReadProto(proto_ns::io::ZeroCopyInputStream* in,
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bool read_text, const std::string& source,
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proto_ns::Message* result) {
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if (read_text) {
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RET_CHECK(proto_ns::TextFormat::Parse(in, result))
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<< "could not parse text proto: " << source;
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} else {
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RET_CHECK(result->ParseFromZeroCopyStream(in))
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<< "could not parse binary proto: " << source;
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}
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return mediapipe::OkStatus();
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}
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mediapipe::Status WriteProto(const proto_ns::Message& message, bool write_text,
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const std::string& dest,
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proto_ns::io::ZeroCopyOutputStream* out) {
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if (write_text) {
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RET_CHECK(proto_ns::TextFormat::Print(message, out))
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<< "could not write text proto to: " << dest;
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} else {
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RET_CHECK(message.SerializeToZeroCopyStream(out))
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<< "could not write binary proto to: " << dest;
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}
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return mediapipe::OkStatus();
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}
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// Read a proto from a text or a binary file.
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mediapipe::Status ReadFile(const std::string& proto_source, bool read_text,
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proto_ns::Message* result) {
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std::ifstream ifs(proto_source);
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proto_ns::io::IstreamInputStream in(&ifs);
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MP_RETURN_IF_ERROR(ReadProto(&in, read_text, proto_source, result));
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return mediapipe::OkStatus();
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}
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// Write a proto to a text or a binary file.
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mediapipe::Status WriteFile(const std::string& proto_output, bool write_text,
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const proto_ns::Message& message) {
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std::ios_base::openmode mode = std::ios_base::out | std::ios_base::trunc;
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if (!write_text) {
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mode |= std::ios_base::binary;
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}
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std::ofstream ofs(proto_output, mode);
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proto_ns::io::OstreamOutputStream out(&ofs);
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MP_RETURN_IF_ERROR(WriteProto(message, write_text, proto_output, &out));
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return mediapipe::OkStatus();
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}
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} // namespace mediapipe
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int main(int argc, char** argv) {
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google::InitGoogleLogging(argv[0]);
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gflags::ParseCommandLineFlags(&argc, &argv, true);
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// Validate command line options.
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mediapipe::Status status;
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if (FLAGS_proto_source.empty()) {
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status.Update(
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::mediapipe::InvalidArgumentError("--proto_source must be specified"));
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}
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if (FLAGS_proto_output.empty()) {
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status.Update(
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::mediapipe::InvalidArgumentError("--proto_output must be specified"));
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}
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if (!status.ok()) {
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return EXIT_FAILURE;
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}
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mediapipe::CalculatorGraphConfig config;
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EXIT_IF_ERROR(mediapipe::ReadFile(FLAGS_proto_source, true, &config));
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EXIT_IF_ERROR(mediapipe::WriteFile(FLAGS_proto_output, false, config));
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return EXIT_SUCCESS;
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}
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