utils.h

/*
 * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
 *
 * 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
 *
 *     http://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.
 */

#ifndef UTILS_H_
#define UTILS_H_

#include <string>

#include "opencv2/core.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/videoio.hpp"

typedef enum { INPUT_Image = 0, INPUT_Video = 1, INPUT_Camera = 2 } eInputType;

bool SetupInput(eInputType input_source, std::string input_path,
                cv::VideoCapture &cap, cv::Mat &input_image);

void SetupLiveDisplay(char *display_win);

void CollectFrames(std::vector<uint8_t> &output, int input_source,
                   cv::VideoCapture &cap, cv::Mat &in_image, int width,
                   int height, int channels);

template <class T>
void PrepareInput(T *out, std::vector<uint8_t> &input,
                  int input_number_of_pixels, bool floating_input,
                  float input_mean, float input_std) {
  for (int i = 0; i < input_number_of_pixels; i++) {
    if (floating_input)
      out[i] = (input[i] - input_mean) / input_std;
    else
      out[i] = (T)input[i];
  }
}

#endif // UTILS_H_