formats/jpeg/testing/jpeg_creator.cc

// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#include "formats/jpeg/testing/jpeg_creator.h"

#include <cstdint>
#include <string>
#include <vector>

#include "utils/byte_writers.h"

namespace credentio {

std::string CreateJpeg(const JpegParams& params) {
  std::vector<uint8_t> jpeg;

  WriteUint16NetworkOrder(params.start_marker, &jpeg);

  for (const auto& p : params.payload) {
    for (const auto& c : p) {
      jpeg.push_back(c);
    }
  }

  WriteUint16NetworkOrder(params.end_markers, &jpeg);

  return std::string(jpeg.begin(), jpeg.end());
}

}  // namespace credentio