chore: import upstream snapshot with attribution

modules/imgcodecs/perf/perf_jpeg.cpp

@@ -0,0 +1,60 @@
+// 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
+#include "perf_precomp.hpp"
+
+namespace opencv_test
+{
+
+#ifdef HAVE_JPEG
+
+using namespace perf;
+
+PERF_TEST(JPEG, Decode)
+{
+    String filename = getDataPath("stitching/boat1.jpg");
+
+    FILE *f = fopen(filename.c_str(), "rb");
+    fseek(f, 0, SEEK_END);
+    long len = ftell(f);
+    fseek(f, 0, SEEK_SET);
+    vector<uchar> file_buf((size_t)len);
+    EXPECT_EQ(len, (long)fread(&file_buf[0], 1, (size_t)len, f));
+    fclose(f); f = NULL;
+
+    TEST_CYCLE() imdecode(file_buf, IMREAD_UNCHANGED);
+
+    SANITY_CHECK_NOTHING();
+}
+
+PERF_TEST(JPEG, Decode_rgb)
+{
+    String filename = getDataPath("stitching/boat1.jpg");
+
+    FILE *f = fopen(filename.c_str(), "rb");
+    fseek(f, 0, SEEK_END);
+    long len = ftell(f);
+    fseek(f, 0, SEEK_SET);
+    vector<uchar> file_buf((size_t)len);
+    EXPECT_EQ(len, (long)fread(&file_buf[0], 1, (size_t)len, f));
+    fclose(f); f = NULL;
+
+    TEST_CYCLE() imdecode(file_buf, IMREAD_COLOR_RGB);
+
+    SANITY_CHECK_NOTHING();
+}
+
+PERF_TEST(JPEG, Encode)
+{
+    String filename = getDataPath("stitching/boat1.jpg");
+    cv::Mat src = imread(filename);
+
+    vector<uchar> buf;
+    TEST_CYCLE() imencode(".jpg", src, buf);
+
+    SANITY_CHECK_NOTHING();
+}
+
+#endif // HAVE_JPEG
+
+} // namespace