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Web Monitoring - mjpg streamer migration

2022-07-22 02:52:00 【HelloAaric】

Updated on 2018 year 04 month 16 Japan

Reference article ：https://blog.csdn.net/xiongmaojiayou/article/details/7604746

Mjpeg‐stream Introduce

Mjpeg‐stream It's open source software , Used for holding mjpeg Format file becomes streaming media output .

1. Environment platform

PC machine ：vmware Installed in the virtual machine red hat 6 ( The cross compilation environment has been configured )

Target board ：S3C2440

Develop the system running on the board ： kernel Linux‐2.6.32.2

2 . stay 2440 Installation on mjpeg‐stream

Step1： transplant jpeg library

mjpg-stream The migration of needs to be based on jpeg The library of , So let's transplant jpeg The library of .

1) Download source package

Thanks for the source code website ：http://www.ijg.org/files/
jpeg The source code package can be downloaded through the following website （2018 year 01 month 14 Promulgated by the ）
http://www.ijg.org/files/jpegsrc.v9c.tar.gz

2) Decompress the source package

#tar xzvf jpegsrc.v9c.tar.gz
#cd jpeg-9c

3) Configuration source code , The following configuration is important （ Specific configuration items can run commands ./configure --help See what it means , Modify... According to the actual situation ）

#./configure CC=arm-linux-gcc --host=arm-unknown-linux --prefix=/home/jpeg-9c/jpeg --enable-shared --enable-static

among /home/jpeg-9c/jpeg Is the directory of installation after compilation , Modify... According to the actual situation

4) compile #make

5) install #make install ; here , stay /home/jpeg-9c/jpeg Some folders appear in the folder , Include bin、include、lib、share.

6) Copy the above lib All files in the folder , namely jpeg library , To the development board ( Using USB flash drive 、nfs、tftp Tools such as )

here , Suppose it is copied to the development board /usr/local/mjpg-streamer Under the table of contents ( The catalogue should be established in advance ).

Step2： transplant mjpg-streamer

1) download mjpg-streamer Source code

Thanks for the source code website ：https://sourceforge.net/p/mjpg-streamer/code/HEAD/tree/

Download address ：（ Click to download ）

https://sourceforge.net/code-snapshots/svn/m/mj/mjpg-streamer/code/mjpg-streamer-code-182.zip

2) Unzip the downloaded compressed file , Will be one of the mjpg-streamer Folder ( As shown in the figure ), Copy to virtual machine linux in .

Assume here that it is copied to /home Under the table of contents

3) Modify source code

#cd /home/mjpg‐streamer ; Enter this directory

#gedit plugins/input_uvc/Makefile ; modify plugins/input_uvc/ In the catalog Makfile file ,

modify CFLAGS += -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC

by CFLAGS += -O1 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -I/home/jpeg-9c/jpeg/include

modify $(CC) $(CFLAGS) -o [email protected] input_uvc.c v4l2uvc.lo jpeg_utils.lo dynctrl.lo $(LFLAGS)

by $(CC) $(CFLAGS) -L/home/jpeg-9c/jpeg/lib -o [email protected] input_uvc.c v4l2uvc.lo jpeg_utils.lo dynctrl.lo $(LFLAGS)

notes ：/home/jpeg-9c/jpeg It is transplanted from above jpeg The directory installed after the Library

4、 compile ：make CC=arm-linux-gcc

Be careful ： If it appears make: Nothing to be done for `all'. You need to execute make clean command .

5、 Build on the development board mjpg-streamer The installation directory

mkdir /usr/local/mjpg-streamer

Will compile the generated *.so file , Copy to the development board /usr/local/mjpg-streamer Catalog ;

The generated executable will be compiled mjpg-stream, Copy to the development board /usr/local/mjpg-streamer Catalog

Put start.sh And contents www Copy to development board /usr/local/mjpg-streamer Under the table of contents , Then you can test

6、 test ：

Modify the start.sh file (start.sh There is a modification tutorial in the file ), And then run start.sh;

（ Limited to the same LAN ） stay PC The machine opens a web page , Input http://192.168.12.21:8088/?action=stream You can see the image .

notes ：ip The address is development board IP, Port is start.sh Port configured in

7、 Get help

The way to get help is start.sh There's a description in , Here's an example , function ./mjpg_streamer --help It will print out the following help , Parameters can be set as needed
The following parameters can be passed to this plugin:
[-d | --device ].......: video device to open (your camera)
[-r | --resolution ]...: the resolution of the video device,
can be one of the following strings

                         QSIF QCIF CGA QVGA CIF VGA
                          SVGA XGA SXGA
                          or a custom value like the following
                          example: 640x480
[-f | --fps ]..........: frames per second
[-y | --yuv ]..........: enable YUYV format and disable MJPEG mode
[-q | --quality ]......: JPEG compression quality in percent
                          (activates YUYV format, disables MJPEG)
[-m | --minimum_size ].: drop frames smaller then this limit, useful
                          if the webcam produces small-sized garbage frames
                          may happen under low light conditions
[-n | --no_dynctrl ]...: do not initalize dynctrls of Linux-UVC driver
[-l | --led ]..........: switch the LED "on", "off", let it "blink" or leave
                          it up to the driver using the value "auto"

Above is mjpg-streamer The whole process of transplantation .