mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2025-01-18 22:44:02 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #13487 from alalek:videoio_test_frame_size_changing

Browse Source
This commit is contained in:
Alexander Alekhin 2018-12-21 12:17:06 +00:00
commit 6c1638b132
1 changed files with 37 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
modules/videoio/test/test_camera.cpp
View File

@ -11,7 +11,7 @@
namespace opencv_test { namespace {
static void test_readFrames(/*const*/ VideoCapture& capture, const int N = 100)
static void test_readFrames(/*const*/ VideoCapture& capture, const int N = 100, Mat* lastFrame = NULL)
{
Mat frame;
int64 time0 = cv::getTickCount();
@ -26,6 +26,7 @@ static void test_readFrames(/*const*/ VideoCapture& capture, const int N = 100)
}
int64 time1 = cv::getTickCount();
printf("Processed %d frames on %.2f FPS\n", N, (N * cv::getTickFrequency()) / (time1 - time0 + 1));
if (lastFrame) *lastFrame = frame.clone();
}
TEST(DISABLED_VideoIO_Camera, basic)
@ -55,4 +56,39 @@ TEST(DISABLED_VideoIO_Camera, validate_V4L2_MJPEG)
capture.release();
}
TEST(DISABLED_VideoIO_Camera, validate_V4L2_FrameSize)
{
VideoCapture capture(CAP_V4L2);
ASSERT_TRUE(capture.isOpened());
std::cout << "Camera 0 via " << capture.getBackendName() << " backend" << std::endl;
std::cout << "Frame width: " << capture.get(CAP_PROP_FRAME_WIDTH) << std::endl;
std::cout << " height: " << capture.get(CAP_PROP_FRAME_HEIGHT) << std::endl;
std::cout << "Capturing FPS: " << capture.get(CAP_PROP_FPS) << std::endl;
int fourcc = (int)capture.get(CAP_PROP_FOURCC);
std::cout << "FOURCC code: " << cv::format("0x%8x", fourcc) << std::endl;
test_readFrames(capture, 30);
EXPECT_TRUE(capture.set(CAP_PROP_FRAME_WIDTH, 640));
EXPECT_TRUE(capture.set(CAP_PROP_FRAME_HEIGHT, 480));
std::cout << "Frame width: " << capture.get(CAP_PROP_FRAME_WIDTH) << std::endl;
std::cout << " height: " << capture.get(CAP_PROP_FRAME_HEIGHT) << std::endl;
std::cout << "Capturing FPS: " << capture.get(CAP_PROP_FPS) << std::endl;
Mat frame640x480;
test_readFrames(capture, 30, &frame640x480);
EXPECT_EQ(640, frame640x480.cols);
EXPECT_EQ(480, frame640x480.rows);
EXPECT_TRUE(capture.set(CAP_PROP_FRAME_WIDTH, 1280));
EXPECT_TRUE(capture.set(CAP_PROP_FRAME_HEIGHT, 720));
std::cout << "Frame width: " << capture.get(CAP_PROP_FRAME_WIDTH) << std::endl;
std::cout << " height: " << capture.get(CAP_PROP_FRAME_HEIGHT) << std::endl;
std::cout << "Capturing FPS: " << capture.get(CAP_PROP_FPS) << std::endl;
Mat frame1280x720;
test_readFrames(capture, 30, &frame1280x720);
EXPECT_EQ(1280, frame1280x720.cols);
EXPECT_EQ(720, frame1280x720.rows);
capture.release();
}
}} // namespace