This document mainly introduces MIPI Camera. The document is divided into two parts,The first part of the document describes how to connect. The second part introduces How to record video via Gstreamer and test your camera under Ubuntu.

sudo apt update
sudo apt install gstreamer-aml

gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap num-buffers=300 ! amlvenc ! h264parse ! qtmux ! filesink location=test_50.mp4

This part is some Demo Source Code that will guide you how to use it to test your camera.

$ sudo apt install libopencv-dev python3-opencv

mipi-camera.py

import cv2 
 
if __name__ == '__main__':
 
    val = True
 
    cap = cv2.VideoCapture(0)
    cap.set(cv2.CAP_PROP_FRAME_WIDTH, 1920)
    cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 1080)
 
    fourcc = cv2.VideoWriter_fourcc(*'XVID')
 
    out = cv2.VideoWriter("./test.avi", fourcc, 20.0, (640, 480), True)
 
    while val is True:
        ret, frame = cap.read()
        cv2.cvtColor(frame,cv2.COLOR_RGB2BGR)
        if frame is None:
            break
        else:
            out.write(frame)
            cv2.imshow("video", frame)
            k = cv2.waitKey(1) & 0xFF
            if k == 27: 
                break
 
    cap.release()
    out.release()

mipi-camera.cpp

#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/core/core.hpp>
#include <iostream>
#include <string>
using
namespace  cv;
 
using
namespace  std;
 
int main(int argc, char** argv)
{
    int count=100;
    string str = argv[1];
    string res=str.substr(10);
    VideoCapture capture(stoi(res));
    capture.set(CAP_PROP_FRAME_WIDTH, 1920);
    capture.set(CAP_PROP_FRAME_HEIGHT, 1080);
    while (count)
    {
        Mat frame;
        capture >> frame;
 
        if (frame.empty()) {
            break;
        }
        int h = frame.rows;
        int w = frame.cols;
        const char *name = "video";
        namedWindow(name, 0);
        imshow(name, frame);
        waitKey(30);
        count--;
    }
    return 0;
}

Compile:

$ gcc -o mipi mipi-camera.cpp -lopencv_imgproc -lopencv_core -lopencv_videoio -lopencv_imgcodecs -lopencv_highgui -std=c++11 -std=gnu++11 -Wall -std=c++11 -lstdc++ -I/usr/include/opencv4

Run format:

$ ./test /dev/videoX

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