1 files changed, 83 insertions, 0 deletions
diff --git a/python/openvino/runtime/common/format_reader/opencv_wrapper.cpp b/python/openvino/runtime/common/format_reader/opencv_wrapper.cpp
new file mode 100644
index 0000000..b8ebeef
--- /dev/null
+++ b/python/openvino/runtime/common/format_reader/opencv_wrapper.cpp
@@ -0,0 +1,83 @@
+// Copyright (C) 2018-2022 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+//
+
+#ifdef USE_OPENCV
+#    include <fstream>
+#    include <iostream>
+
+// clang-format off
+#    include <opencv2/opencv.hpp>
+
+#    include "samples/slog.hpp"
+#    include "opencv_wrapper.h"
+// clang-format on
+
+using namespace std;
+using namespace FormatReader;
+
+OCVReader::OCVReader(const string& filename) {
+    img = cv::imread(filename);
+    _size = 0;
+
+    if (img.empty()) {
+        return;
+    }
+
+    _size = img.size().width * img.size().height * img.channels();
+    _width = img.size().width;
+    _height = img.size().height;
+}
+
+// Set the maximum number of printed warnings; large image directories can otherwise be overwhelming
+static size_t resize_warning_count = 0;
+const size_t max_resize_warnings = 5;
+
+std::shared_ptr<unsigned char> OCVReader::getData(size_t width = 0, size_t height = 0, ResizeType resize_type = ResizeType::RESIZE) {
+    if (width == 0)
+        width = img.cols;
+
+    if (height == 0)
+        height = img.rows;
+
+    size_t size = width * height * img.channels();
+    _data.reset(new unsigned char[size], std::default_delete<unsigned char[]>());
+
+    if (width != static_cast<size_t>(img.cols) || height != static_cast<size_t>(img.rows)) {
+        if (resize_warning_count < max_resize_warnings) {
+            slog::warn << "Image is resized from (" << img.cols << ", " << img.rows << ") to (" << width << ", " << height
+                       << ")" << slog::endl;
+            resize_warning_count++;
+        } else if (resize_warning_count == max_resize_warnings) {
+            slog::warn << "Additional image resizing messages have been suppressed." << slog::endl;
+            resize_warning_count++;
+        }
+    }
+
+    cv::Mat resized;
+    if (resize_type == ResizeType::RESIZE) {
+        resized = cv::Mat(cv::Size(width, height), img.type(), _data.get());
+        // cv::resize() just copy data to output image if sizes are the same
+        cv::resize(img, resized, cv::Size(width, height));
+    } else if (resize_type == ResizeType::PAD_RESIZE)
+    {
+        cv::Mat padded;
+        // Find the larger side out of width and height of the image
+        int max_dim = std::max(img.rows, img.cols);
+        // Calculate padding for shorter dimension
+        int top = (max_dim - img.rows) / 2;
+        int bottom = (max_dim - img.rows + 1) / 2;
+        int left = (max_dim - img.cols) / 2;
+        int right = (max_dim - img.cols + 1) / 2;
+        // Add padding (0, i.e., black) to make the image a square
+        cv::copyMakeBorder(img, padded, top, bottom, left, right, cv::BORDER_CONSTANT, cv::Scalar());
+        cv::resize(padded, resized, cv::Size(width, height));
+        std::memcpy(_data.get(), resized.data, resized.total() * resized.elemSize());
+    } else {
+        slog::err << "Specified resize type is not implemented." << slog::endl;
+        std::exit(1);
+    }
+
+    return _data;
+}
+#endif