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117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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// Reference: https://www.kernel.org/doc/html/v4.8/media/v4l-drivers/vivid.html
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// create 1 virtual device of type CAP (0x1) at /dev/video10
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// sudo modprobe vivid ndevs=1 node_types=0x1 vid_cap_nr=10
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// make sure user have read/write access (e.g. via group 'video')
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// $ ls -l /dev/video10
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// crw-rw----+ 1 root video ... /dev/video10
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// set environment variable:
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// export OPENCV_TEST_V4L2_VIVID_DEVICE=/dev/video10
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// run v4l2 tests:
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// opencv_test_videoio --gtest_filter=*videoio_v4l2*
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#ifdef HAVE_CAMV4L2
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#include "test_precomp.hpp"
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#include <opencv2/core/utils/configuration.private.hpp>
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#include <linux/videodev2.h>
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using namespace cv;
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namespace opencv_test { namespace {
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struct Format_Channels_Depth
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{
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uint32_t pixel_format;
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uint8_t channels;
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uint8_t depth;
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float mul_width;
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float mul_height;
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};
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typedef testing::TestWithParam<Format_Channels_Depth> videoio_v4l2;
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TEST_P(videoio_v4l2, formats)
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{
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utils::Paths devs = utils::getConfigurationParameterPaths("OPENCV_TEST_V4L2_VIVID_DEVICE");
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if (devs.size() != 1)
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{
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throw SkipTestException("OPENCV_TEST_V4L2_VIVID_DEVICE is not set");
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}
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const string device = devs[0];
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const Size sz(640, 480);
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const Format_Channels_Depth params = GetParam();
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{
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// Case with RAW output
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VideoCapture cap;
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ASSERT_TRUE(cap.open(device, CAP_V4L2));
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// VideoCapture will set device's format automatically, vivid device will accept it
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ASSERT_TRUE(cap.set(CAP_PROP_FOURCC, params.pixel_format));
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ASSERT_TRUE(cap.set(CAP_PROP_CONVERT_RGB, false));
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for (size_t idx = 0; idx < 3; ++idx)
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{
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Mat img;
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EXPECT_TRUE(cap.grab());
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EXPECT_TRUE(cap.retrieve(img));
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EXPECT_EQ(Size(sz.width * params.mul_width, sz.height * params.mul_height), img.size());
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EXPECT_EQ(params.channels, img.channels());
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EXPECT_EQ(params.depth, img.depth());
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}
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}
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{
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// case with BGR output
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VideoCapture cap;
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ASSERT_TRUE(cap.open(device, CAP_V4L2));
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// VideoCapture will set device's format automatically, vivid device will accept it
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ASSERT_TRUE(cap.set(CAP_PROP_FOURCC, params.pixel_format));
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for (size_t idx = 0; idx < 3; ++idx)
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{
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Mat img;
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EXPECT_TRUE(cap.grab());
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EXPECT_TRUE(cap.retrieve(img));
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EXPECT_EQ(sz, img.size());
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EXPECT_EQ(3, img.channels());
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EXPECT_EQ(CV_8U, img.depth());
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}
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}
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}
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vector<Format_Channels_Depth> all_params = {
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{ V4L2_PIX_FMT_YVU420, 1, CV_8U, 1.f, 1.5f },
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{ V4L2_PIX_FMT_YUV420, 1, CV_8U, 1.f, 1.5f },
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{ V4L2_PIX_FMT_NV12, 1, CV_8U, 1.f, 1.5f },
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{ V4L2_PIX_FMT_NV21, 1, CV_8U, 1.f, 1.5f },
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{ V4L2_PIX_FMT_YUV411P, 3, CV_8U, 1.f, 1.f },
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// { V4L2_PIX_FMT_MJPEG, 1, CV_8U, 1.f, 1.f },
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// { V4L2_PIX_FMT_JPEG, 1, CV_8U, 1.f, 1.f },
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{ V4L2_PIX_FMT_YUYV, 2, CV_8U, 1.f, 1.f },
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{ V4L2_PIX_FMT_UYVY, 2, CV_8U, 1.f, 1.f },
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// { V4L2_PIX_FMT_SBGGR8, 1, CV_8U, 1.f, 1.f },
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// { V4L2_PIX_FMT_SN9C10X, 3, CV_8U, 1.f, 1.f },
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// { V4L2_PIX_FMT_SGBRG8, 1, CV_8U, 1.f, 1.f },
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{ V4L2_PIX_FMT_RGB24, 3, CV_8U, 1.f, 1.f },
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{ V4L2_PIX_FMT_Y16, 1, CV_16U, 1.f, 1.f },
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{ V4L2_PIX_FMT_Y10, 1, CV_16U, 1.f, 1.f },
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{ V4L2_PIX_FMT_GREY, 1, CV_8U, 1.f, 1.f },
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{ V4L2_PIX_FMT_BGR24, 3, CV_8U, 1.f, 1.f },
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{ V4L2_PIX_FMT_XBGR32, 3, CV_8U, 1.f, 1.f },
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{ V4L2_PIX_FMT_ABGR32, 3, CV_8U, 1.f, 1.f },
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};
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inline static std::string param_printer(const testing::TestParamInfo<videoio_v4l2::ParamType>& info)
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{
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return fourccToStringSafe(info.param.pixel_format);
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}
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INSTANTIATE_TEST_CASE_P(/*videoio_v4l2*/, videoio_v4l2, ValuesIn(all_params), param_printer);
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}} // opencv_test::<anonymous>::
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#endif // HAVE_CAMV4L2
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