vendor: OpenCV 5.0.0 snapshot at 40738fb16ceddb5fb3fea747585f7ce6abb0605b

2026-08-22 00:10:33 +08:00
commit f7f077da11
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+// 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
+
+// Not a standalone header.
+
+#include <opencv2/core/utils/configuration.private.hpp>
+
+namespace opencv_test {
+using namespace perf;
+
+static
+utils::Paths getTestCameras()
+{
+    static utils::Paths cameras = utils::getConfigurationParameterPaths("OPENCV_TEST_PERF_CAMERA_LIST");
+    return cameras;
+}
+
+PERF_TEST(VideoCapture_Camera, waitAny_V4L)
+{
+    auto cameraNames = getTestCameras();
+    if (cameraNames.empty())
+       throw SkipTestException("No list of tested cameras. Use OPENCV_TEST_PERF_CAMERA_LIST parameter");
+
+    const int totalFrames = 50; // number of expected frames (summary for all cameras)
+    const int64 timeoutNS = 100 * 1000000;
+
+    const Size frameSize(640, 480);
+    const int fpsDefaultEven = 30;
+    const int fpsDefaultOdd = 15;
+
+    std::vector<VideoCapture> cameras;
+    for (size_t i = 0; i < cameraNames.size(); ++i)
+    {
+        const auto& name = cameraNames[i];
+        int fps = (int)utils::getConfigurationParameterSizeT(cv::format("OPENCV_TEST_CAMERA%d_FPS", (int)i).c_str(), (i & 1) ? fpsDefaultOdd : fpsDefaultEven);
+        std::cout << "Camera[" << i << "] = '" << name << "', fps=" << fps << std::endl;
+        VideoCapture cap(name, CAP_V4L);
+        ASSERT_TRUE(cap.isOpened()) << name;
+        EXPECT_TRUE(cap.set(CAP_PROP_FRAME_WIDTH, frameSize.width)) << name;
+        EXPECT_TRUE(cap.set(CAP_PROP_FRAME_HEIGHT, frameSize.height)) << name;
+        EXPECT_TRUE(cap.set(CAP_PROP_FPS, fps)) << name;
+        //launch cameras
+        Mat firstFrame;
+        EXPECT_TRUE(cap.read(firstFrame));
+        EXPECT_EQ(frameSize.width, firstFrame.cols);
+        EXPECT_EQ(frameSize.height, firstFrame.rows);
+        cameras.push_back(cap);
+    }
+
+    TEST_CYCLE()
+    {
+        int counter = 0;
+        std::vector<int> cameraReady;
+        do
+        {
+            EXPECT_TRUE(VideoCapture::waitAny(cameras, cameraReady, timeoutNS));
+            EXPECT_FALSE(cameraReady.empty());
+            for (int idx : cameraReady)
+            {
+                VideoCapture& c = cameras[idx];
+                Mat frame;
+                ASSERT_TRUE(c.retrieve(frame));
+                EXPECT_EQ(frameSize.width, frame.cols);
+                EXPECT_EQ(frameSize.height, frame.rows);
+
+                ++counter;
+            }
+        }
+        while(counter < totalFrames);
+    }
+
+    SANITY_CHECK_NOTHING();
+}
+
+} // namespace