opencv_trail_effect.cpp: set window size and title

[experiments/opencv_trail_effect.git] / opencv_trail_effect.cpp

diff --git a/opencv_trail_effect.cpp b/opencv_trail_effect.cpp
index bc5b187..98e3aed 100644 (file)
--- a/opencv_trail_effect.cpp
+++ b/opencv_trail_effect.cpp
@@ -131,7 +131,14 @@ int main(int argc, char *argv[])
        if (!input_file.empty()) {
                inputVideo.open(input_file);
        } else {
+#ifdef __linux__
+               // XXX Hardcode the V4L2 backend on linux for now because the
+               // GStreamer one lacks some functionality, see:
+               // https://github.com/opencv/opencv/issues/18562
+               inputVideo.open(0, cv::CAP_V4L2);
+#else
                inputVideo.open(0);
+#endif
        }
 
        if (!inputVideo.isOpened()) {
@@ -190,6 +197,8 @@ int main(int argc, char *argv[])
        }
 
        cv::namedWindow("Frame", cv::WINDOW_NORMAL);
+       cv::resizeWindow("Frame", frame_size);
+       cv::setWindowTitle("Frame", "OpenCV Trail Effect");
 
        for (;;) {
                inputVideo >> input_frame;