Complete chapel-webcam demo with opencv.

Author: Iainmon

demos/video/chapel-webcam/Makefile

@@ -37,7 +37,7 @@ OPENCV_LDFLAGS = `pkg-config --cflags --libs opencv4`
 
 main: main.cpp smol_wrapper.h lib/libsmol.so
 	@echo $(OPENCV_CFLAGS)
-	$(CHPL_COMPILER) $(CHPL_CFLAGS) $(OPENCV_CFLAGS) -std=c++20 -fPIC main.cpp -o main $(CHPL_LDFLAGS) $(OPENCV_LDFLAGS)
+	$(CHPL_LINKER) $(CHPL_CFLAGS) $(OPENCV_CFLAGS) -std=c++20 -fPIC main.cpp -o main $(CHPL_LDFLAGS) $(OPENCV_LDFLAGS)
 
 clean:
 	rm -f maincpp maincpp.o main.o main

demos/video/chapel-webcam/main.cpp

@@ -1,46 +1,46 @@
 #include "smol_wrapper.h"
 
 
-// #include <opencv2/opencv.hpp>
-// #include <iostream>
-
-
-// int mirror() {
-//     cv::VideoCapture cap(0);
-//     if (!cap.isOpened()) {
-//         std::cerr << "Error: Cannot open the webcam.\n";
-//         return -1;
-//     }
-
-//     cv::Mat frame;
-//     const std::string windowName = "Webcam Feed";
-//     cv::namedWindow(windowName, cv::WINDOW_AUTOSIZE);
-
-//     while (true) {
-//         // Capture a new frame from webcam
-//         cap >> frame;
-//         if (frame.empty()) {
-//             std::cerr << "Error: Empty frame captured.\n";
-//             break;
-//         }
-
-//         // Display the captured frame
-//         cv::imshow(windowName, frame);
-
-//         // Wait for 30ms or until 'q' key is pressed
-//         char key = static_cast<char>(cv::waitKey(30));
-//         if (key == 'q' || key == 27) { // 'q' or ESC to quit
-//             break;
-//         }
-//     }
-
-//     // Release the camera and destroy all windows
-//     cap.release();
-//     cv::destroyAllWindows();
-//     return 0;
-// }
-
-int mirror() { return 0; }
+#include <opencv2/opencv.hpp>
+#include <iostream>
+
+
+int mirror() {
+    cv::VideoCapture cap(0);
+    if (!cap.isOpened()) {
+        std::cerr << "Error: Cannot open the webcam.\n";
+        return -1;
+    }
+
+    cv::Mat frame;
+    const std::string windowName = "Webcam Feed";
+    cv::namedWindow(windowName, cv::WINDOW_AUTOSIZE);
+
+    while (true) {
+        // Capture a new frame from webcam
+        cap >> frame;
+        if (frame.empty()) {
+            std::cerr << "Error: Empty frame captured.\n";
+            break;
+        }
+
+        // Display the captured frame
+        cv::imshow(windowName, frame);
+
+        // Wait for 30ms or until 'q' key is pressed
+        char key = static_cast<char>(cv::waitKey(30));
+        if (key == 'q' || key == 27) { // 'q' or ESC to quit
+            break;
+        }
+    }
+
+    // Release the camera and destroy all windows
+    cap.release();
+    cv::destroyAllWindows();
+    return 0;
+}
+
+// int mirror() { return 0; }
 
 int main(int argc, char* argv[]) {
     chpl_library_init(argc, argv);