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| − | ===Using Camera on Linux (MIPI Camera OV13850 & OV4689, and webcam logitect C920)===
| + | [[How to use 4G Module EC20 on RK3399 boards|English]] |
| − | Hardware Setting:
| + | |
| − | The Camera module can be connected to a MIPI port:<br />
| + | |
| − | {{#switch: {{{1}}}
| + | |
| − | | NanoPC-T4 =
| + | |
| − | [[File:T4-mipi-single-camera.jpg|frameless|500px]]<br> | + | |
| − | | NanoPi-M4 =
| + | |
| − | [[File:M4-mipi-single-camera.jpg|frameless|500px]]<br>
| + | |
| − | | NanoPi-NEO4 =
| + | |
| − | [[File:Neo4-mipi-single-camera.jpg|frameless|500px]]<br>
| + | |
| − | | #default =
| + | |
| − | }}
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| | | | |
| − | <!--
| + | {{RK3399-Android-4G-EC20/zh}} |
| − | M4-mipi-dual-camera.jpg
| + | {{RK3399-Android-4G-EC20/zh}} |
| − | T4-mipi-dual-camera.jpg
| + | |
| − | -->
| + | |
| − | | + | |
| − | FriendlyELEC provides some scripts use to test a camera's functions. You can run it in a commandline to test picture taking and video recording. <br />
| + | |
| − | You may try update this script to the lastest version by using the following commands:
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | cd /tmp/
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| − | git clone https://github.com/friendlyarm/gst-camera-sh.git
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| − | sudo cp gst-camera-sh/*.sh /usr/bin/
| + | |
| − | </syntaxhighlight>
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| − | | + | |
| − | There are three scripts:<br />
| + | |
| − | gst-camera.sh: preview, photo and video of a single camera <br />
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| − | dual-camera.sh: preview two cameras <br />
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| − | stop-gst-camera.sh: stop preview<br />
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| − | <br />
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| − | | + | |
| − | ====Options in "gst-camera.sh"====
| + | |
| − | ::{| class="wikitable"
| + | |
| − | |-
| + | |
| − | |Options || Comment
| + | |
| − | |-
| + | |
| − | | --index or -i || Camera's index, it can be either 0 or 1. When two cameras are connected to a board you need to specify 1 to access the second camera.
| + | |
| − | |-
| + | |
| − | | --action or -a || Specify an action, it can be "preview" to preview, "photo" to take a picture or "video" to record video
| + | |
| − | |-
| + | |
| − | | --output or -o || Specify an output file to save a picture when taking a picture or video file when recording video
| + | |
| − | |-
| + | |
| − | | --verbose or -v || If it is specified as "yes" it will output the complete command when "gst-launch-1.0" is called
| + | |
| − | |-
| + | |
| − | | -x || Using the rkximagesink plugin, the preview image will be output to the X11 window for the FriendlyDesktop and Lubuntu systems
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| − | |-
| + | |
| − | | -g || Using the glimagesink plugin, the preview image will be output to the X11 window for the FriendlyDesktop and Lubuntu systems
| + | |
| − | |-
| + | |
| − | | -k || Using the kmssink plugin, the preview image will be output directly to the screen for the FriendlyCore system
| + | |
| − | |}
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| − | | + | |
| − | The script gst-camera.sh will automatically recognize OV13850, OV4689 and C920 camera, and then pass the appropriate parameters to gst-launch-1.0.
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| − | | + | |
| − | ====Usage of gst-camera.sh====
| + | |
| − | * '''Preview'''
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | gst-camera.sh --action preview
| + | |
| − | </syntaxhighlight>
| + | |
| − | * '''Picture Taking'''
| + | |
| − | You can run the following command to take a picture and save it as a "1.jpg" file,
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | gst-camera.sh -a photo -o 1.jpg
| + | |
| − | </syntaxhighlight>
| + | |
| − | | + | |
| − | * '''Preview and Record'''
| + | |
| − | You can run the following command to record video and save your video to a "1.ts" file. Hardware encoding is activated when it is recording video.
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | gst-camera.sh --action video -output 1.ts
| + | |
| − | </syntaxhighlight>
| + | |
| − | <br />
| + | |
| − | * '''Show Complete Command'''
| + | |
| − | If you add the "--verbose yes" option it will show a complete gsteamer command.
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | gst-camera.sh --action video --output 1.ts --verbose yes
| + | |
| − | </syntaxhighlight>
| + | |
| − | Here is the complete gsteamer command you will see:
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | gst-launch-1.0 rkisp num-buffers=512 device=/dev/video0 io-mode=1 ! \
| + | |
| − | video/x-raw,format=NV12,width=1280,height=720,framerate=30/1 ! \
| + | |
| − | mpph264enc ! queue ! h264parse ! mpegtsmux ! \
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| − | filesink location=/tmp/camera-record.ts
| + | |
| − | </syntaxhighlight>
| + | |
| − | | + | |
| − | ====gst-launch-1.0 parameter description====
| + | |
| − | Preview camera on FriendlyDesktop：
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | gst-launch-1.0 rkisp device=/dev/video1 io-mode=4 ! video/x-raw,format=NV12,width=1280,height=720,framerate=30/1 ! rkximagesink
| + | |
| − | </syntaxhighlight>
| + | |
| − | Important parameters
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| − | ::{| class="wikitable"
| + | |
| − | |-
| + | |
| − | |parameter || description
| + | |
| − | |-
| + | |
| − | | device || preview device(selfpath): /dev/video1 and /dev/video5, picture device(mainpath): /dev/video0 and /dev/video4, webcam device: /dev/video8
| + | |
| − | |-
| + | |
| − | | io-mode || 1: memory map, 4:dmabuf
| + | |
| − | |-
| + | |
| − | | rkximagesink/glimagesink/kmssink || rkximagesink for FriendlyDesktop, kmssink for FriendlyCore, glimagesink for webcam on FriendlyDesktop
| + | |
| − | |}
| + | |
| − | | + | |
| − | ====Access the camera in OpenCV====
| + | |
| − | MIPI camera：
| + | |
| − | <syntaxhighlight lang="python">
| + | |
| − | cv.VideoCapture('rkisp device=/dev/video1 io-mode=4 ! video/x-raw,format=NV12,width=640,height=480,framerate=30/1 ! videoconvert ! appsink', cv.CAP_GSTREAMER)
| + | |
| − | </syntaxhighlight>
| + | |
| − | USB camera：
| + | |
| − | <syntaxhighlight lang="python">
| + | |
| − | cv.VideoCapture('rkisp device=/dev/video8 io-mode=4 ! videoconvert ! video/x-raw,format=NV12,width=640,height=480,framerate=30/1 ! videoconvert ! appsink', cv.CAP_GSTREAMER)
| + | |
| − | </syntaxhighlight>
| + | |
| − | <br />
| + | |
| − | Please refer to the sample code here for details：https://github.com/friendlyarm/install-opencv-on-friendlycore/tree/rk3399/examples<br />
| + | |
| − | <br />
| + | |
| − | | + | |
| − | ====Camera application tutorial: Push video stream====
| + | |
| − | Please refre this guide: [[RTMP-For-RK3399]]<br />
| + | |
| − | | + | |
| − | ====Reference resource====
| + | |
| − | http://blog.iotwrt.com/media/2017/10/01/camera/
| + | |
| − | http://www.360doc.com/content/16/1019/17/496343_599664458.shtml
| + | |
默认情况下，Android的GPS功能是关闭的 (原因是Android在没有找到任何GPS模块的情况下，会不停的打印LOG信息），在你连接了EC20模块后，就可以开启GPS了。
开启方法是修改Android源代码下的 vendor/quectel/ec20/BoardConfigPartial.mk 文件，将下面这行：
默认情况下，Android的GPS功能是关闭的 (原因是Android在没有找到任何GPS模块的情况下，会不停的打印LOG信息），在你连接了EC20模块后，就可以开启GPS了。
开启方法是修改Android源代码下的 vendor/quectel/ec20/BoardConfigPartial.mk 文件，将下面这行：
