Difference between revisions of "Linbian Usage Guide"

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(Demo programs)
(Demo programs)
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'''There is a instruction name readme.txt in every sample, you should read the document first when you running the sample, and then you can know how to config the sample(sample_xxx.conf).'''
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'''There is a instruction name readme.txt in every sample, you should read the document first when you running the sample'''
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'''And then you can know how to config the sample, some sample needed be configured,maybe config file is sample_xxx.conf.'''
  
 
'''app/''' includes a set of MPP samples with a command line based menu. '''sample_xxx/''' is a separate sample of the scene. Root privileges is required when run these sample. e.g.
 
'''app/''' includes a set of MPP samples with a command line based menu. '''sample_xxx/''' is a separate sample of the scene. Root privileges is required when run these sample. e.g.

Revision as of 06:53, 23 January 2019

Terminal

On Linbian OS, the default terminal application is LXTerminal.

Lxterminal.png

You can open it from Application Menu -> System Tools.

Camera Module

download source code from github

  • ldcam developed base on gstreamer
git clone https://github.com/lindenis-org/ldcam-gst.git

compile

  • compile on v5 board===
you can execute "make" directly
  • compile on your own env
you should create the Makefile by yourself

user commd

you can use "./ldcam -?" or "./ldcam --help" to get the cmd instructions

Webcams

Gstreamer

Camera source

  • lindeniv4l2src: Video (video4linux2) Source

Use for CSI Camera
Example:
sudo gst-launch-1.0 lindeniv4l2src device=/dev/video1 ! video/x-raw,width=1920,height=1080,format=I420 ! videoconvert ! sunxifbsink video-memory=24

Omx hardware H.264 decoder and encoder

  • omxh264dec: OpenMAX H.264 Video Decoder

Example:
sudo gst-launch-1.0 filesrc location=1c.mp4 ! qtdemux name=demux demux.video_0 ! queue ! h264parse ! omxh264dec ! videoconvert ! sunxifbsink

  • omxh264videoenc: OpenMAX H.264 Video Encoder

Example:
sudo gst-launch-1.0 lindeniv4l2src device=/dev/video1 ! video/x-raw,width=1920,height=1080,format=I420 ! videoconvert ! omxh264videoenc target-bitrate=5000000 ! mpegtsmux ! filesink location=1.ts

Display sink

  • sunxifbsink: Accelerated console framebuffer video sink for sunxi-based devices

Example:
sudo gst-launch-1.0 -v videotestsrc pattern=ball name=left ! sunxifbsink

Play Video

Play Audio

Python

GPIO

MPP

MPP is the media process platform of Allwinner V5, including following components.

  • system control, API family: AW_MPI_SYS
This component deal with the media hardware initialization, other components initialization and component state management and etc.
  • video input, API family: AW_MPI_VI
  • video output, API family: AW_MPI_VO
  • image stitch engine, API family: AW_MPI_ISE
  • video encode, API family: AW_MPI_VENC
  • video decode, API family: AW_MPI_VDEC
  • mux, API family: AW_MPI_MUX
  • demux, API family: AW_MPI_DEMUX
  • audio input, API family: AW_MPI_AI
  • audio output, API family: AW_MPI_AO
  • audio endode, API family: AW_MPI_AENC
  • audio output, API family: AW_MPI_AOUT
  • Region, API family: AW_MPI_RGN

Allwinner official documents

Samples

Please refer to Demo programs.

Demo programs

Allwinner release a series of MPP samples. You can download from Github.

$ git clone https://github.com/lindenis-org/mpp_sample ~/mpp_sample

After downloading, You will get the following directory.

app/
Makefile.param
README.md
sample_adec/
sample_aenc/
sample_ai/
......

There is a instruction name readme.txt in every sample, you should read the document first when you running the sample

And then you can know how to config the sample, some sample needed be configured,maybe config file is sample_xxx.conf.

app/ includes a set of MPP samples with a command line based menu. sample_xxx/ is a separate sample of the scene. Root privileges is required when run these sample. e.g.

$ sudo ./app/release/app_mpp_sample

***************************************************************
  1 : vi+(venc+rtsp)+vo
  2 : vi+(venc+rtsp)
  3 : vi+vo
  4 : vi+ise+(venc+rtsp)+vo
  5 : [vi+venc+vo]+[ai+aenc+ao]+rtsp
  6 : vi->yuv+venc+rtsp
  7 : vi+venc+mux
  8 : vi+(venc+mux)+vo
  9 : demux+vdec+vo
 10 : ai+aenc+mux+ao
 11 : demux+adec+ao
 12 : Quit
***************************************************************
 Please choice 1~12 num:

RTSP

Location

app_mpp_sample

Building

$ cd ~/mpp_sample/app
$ make

Running

$ sudo ./release/app_mpp_sample

There will shows the following message when you execultive the cmd, and type the num according the menu.

***************************************************************
  1 : vi+(venc+rtsp)+vo
  2 : vi+(venc+rtsp)
  3 : vi+vo
  4 : vi+ise+(venc+rtsp)+vo
  5 : [vi+venc+vo]+[ai+aenc+ao]+rtsp
  6 : vi->yuv+venc+rtsp
  7 : vi+venc+mux
  8 : vi+(venc+mux)+vo
  9 : demux+vdec+vo
 10 : ai+aenc+mux+ao
 11 : demux+adec+ao
 12 : Quit
***************************************************************
 Please choice 1~12 num: 1

***************************************************************
  1 : Set VI+VENC scene     (Resolution,    default:4K@25fps+720P@25fps)
  2 : Set VENC Payload Type (H264/H265,     default:H264)
  3 : Set VENC RC Mode      (CBR/VBR/FIXQP, default:CBR)
  4 : Set VENC Profile      (BL/MP/HP,      default:Main Profile)
  5 : Set VENC rotate       (0/90/180/270,  default:rotate_0)
  6 : Save confige and run this sample
***************************************************************
 Please choice 1~6 num: 1

 ***************** Choice VI+VENC scene **************************
 [0]:VI_4K@30fps + VENC(4K@30fps+VGA@30fps)
 [1]:VI_4K@25fps + VENC(4K@25fps+720P@25fps) [default]
 [2]:VI_2K@30fps + VENC(2K@30fps+720P@30fps)
 [3]:VI_1080P@30fps + VENC(1080P@30fps+720P@30fps)
 [4]:VI_2880x2160@30fps + VENC(2880x2160@30fps+1080P@30fps)
 [5]:VI_2592x1944@30fps + VENC(2592x1944@30fps+1080P@30fps)
 Please choose VI+VENC scene ID 0~3 or (q-Quit): 1

 ***************************************************************
  1 : Set VI+VENC scene     (Resolution,    default:4K@25fps+720P@25fps)
  2 : Set VENC Payload Type (H264/H265,     default:H264)
  3 : Set VENC RC Mode      (CBR/VBR/FIXQP, default:CBR)
  4 : Set VENC Profile      (BL/MP/HP,      default:Main Profile)
  5 : Set VENC rotate       (0/90/180/270,  default:rotate_0)
  6 : Save confige and run this sample
***************************************************************
 Please choice 1~6 num: 6

Test result

Rtsp.png

Dual Camera view

Location

sample_virvi2ise2vo

Building

$ cd ~/mpp_sample/sample_virvi2ise2vo
$ make

Running

$ sudo ./sample_virvi2ise2vo -path sample_virvi2ise2vo.conf

Test result

Dual camera.jpg

Face detection

Face detection based on EVE.

Location

sample_face_detect

Building

$ cd ~/mpp_sample/sample_face_detect
$ make

Running

$ sudo ./sample_face_detect

The picture of face crop and store at ./pic directory when detected.

Test result

Face detect.jpg

Motion detection

Motion detection based on CVE.

Location

sample_AILib/sample_vi2MOD

Building

$ cd ~/mpp_sample/sample_AILib/sample_vi2MOD
$ make 

Running

$ sudo ./sample_vi2MOD -path sample_vi2MOD.conf

The information of detected target was stored at ./DTCAResult.bin .

Human counting

Hunman counting based on CVE.

Location

sample_AILib/sample_vi2HCNT

Building

$ cd ~/mpp_sample/sample_AILib/sample_vi2HCNT
$ make

Running

$ sudo ./sample_vi2HCNT -path sample_vi2HCNT.conf

The information of detected target was stored at ./HCNTResult.bin .

VLPR

VLPR based on CVE.

Location

sample_AILib/sample_vi2VLPR

Building

$ cd ~/mpp_sample/sample_AILib/sample_vi2VLPR
$ make

Running

$ sudo ./sample_vi2VLPR -path sample_vi2VLPR.conf

The information of detected vehicle license plate was stored at ./VLPRResult.bin .

Binocular depth information image

BDII based on CVE.

Location

sample_AILib/sample_BDII

Building

$ cd ~/mpp_sample/sample_AILib/sample_vi2BDII
$ make

Running

$ sudo ./sample_vi2BDII -path sample_vi2BDII.conf

The output is a 8bit-gray-scale picture, stored at ./BDIIResult.bin .

Image stitch

Camera module is in development.