Overview

To validate lightning refapp on rdk 4.0 (rdk-generic-hybrid-image-raspberrypi) along with video playback, need to do some necessary code customizations/modifications in lightning refapp side for video player implementation provided by lightning-sdk framework and rdk library side for variable setting and url configurations.

Please follow the below instructions to validate lightning refapp on rdk-generic-hybrid-image.

Prerequisites

Before you follow the steps below, make sure you have installed all the required prerequisites in your dev PC - Node.js , npm, Lightning-CLI

• Download and install VSCode IDE (code editor) - https://code.visualstudio.com/download
• Download and install Node.js and npm  - https://nodejs.org/en/download/
• Install Lightning-CLI

...

• globally

...

• in your dev PC     

$ npm install -g @lightningjs/cli

reference image for Lightning-CLI install

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Build instructions

• Create Lightning refapp

...

• dev build

...

• 1. pull code from source repo using

...

• 1. below command

     Code Block
     $ git clone https

...

• 1. ://github.com/

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• 1. naseemshekh20/refapp.git

     
     

  2. goto refapp directory

     Code Block
     $ cd refapp

     
     

  3. checkout to branch refapp-vid-playback-validation-on-rdk-4.0

     Code Block
     $ git checkout refapp-vid-playback-validation-on-rdk-4.0

     
     

  4. install the NPM dependencies by running

...

• 1. below command

     Code Block
     $ npm install

     
     

  2. run copyAssets.sh command to create static folder and copy images, json files etc

     Code Block
     $./copyAssets.sh

...

• 1. 
     

  2.  run below command for testing in browser 

     Code Block
     $ lng dev

     
     

refer below screenshots for reference

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reference images for build instructions-1

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reference images for build instructions-2

once npm install complete, you will get message at the end "Do you want us to automatically check for old Lightning-SDK imports and update them in your project files? y/n

press n and hit enter button because on pressing y it gets hanged or stuck, in this case press ctrl+c 

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reference images for build instructions-3

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reference images for build instructions-4

Running refapp

by default vscode launch generated url on chrome browser in dev pc.

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reference image for running app on browser

• Pre-build refapp code

Download customized pre-build refapp code which has lightning sdk video player integrated: build.zip

(or)

• Create dist (build)

  • run below command to make build.

$ lng dist

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reference image for dist creation

Hosting Lighting refapp

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1. copy the lighting build app from dist folder.
2. host build folder into any http server.
3. test the hosted application in browser with help of url.

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1. on browser 

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Lighting refapp integration 

• Pre-build rdk-generic-hybrid-image-raspberrypi image

Download pre-build rdk-generic-hybrid-image-raspberrypi image from here: rdk-generic-hybrid-image-raspberrypi-rdk-hybrid.zip

(or)

• Build rdk-generic-hybrid-image-raspberrypi follow below instructions

$ repo init -u https://code.rdkcentral.com/r/manifests -b yocto-dunfell-upgrade -m rdkv-nosrc.xml
$ repo sync -j4 --no-clone-bundle
$ MACHINE=raspberrypi-rdk-hybrid source meta-cmf-raspberrypi/setup-environment
$ bitbake rdk-generic-hybrid-image

• Flash image on the SD card 

  • Execute the following command to flash the image on the SD card

# sudo dd if=<r-pi sdimg> of=<SD card device> bs=1M 
  
for ex: # sudo dd if=rdk-mc-rpi.sdimg of=/dev/sdb bs=1M

(or)

Windows user can download and install Balena Etcher to write the Raspberry Pi SD card: https://www.balena.io/etcher/

• Download the pre-build image file from rdk-generic-hybrid-image-raspberrypi-rdk-hybrid.zip link to your PC and extract 
• Flash it to the Raspberry Pi's SD card using Etcher

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• Lighting refapp

...

• integration into rdk-generic-hybrid-image-raspberrypi

• • Method 1:

1. login to into raspberrypi : $ssh root@<<IP address>>cd and change directory:

$ ssh root@<<IP address>>

# after login into box 
$ cd /lib/rdk/

...

2. add startup_app_conf variable into referenceApp.sh config file, if referenceApp.sh file is not available in /lib/rdk then refer method 2 below to validate refapp.

startup_app_conf=/opt/residentapp.conf 

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        3. add below line to avoid loading default app  

url="http://192.168.0.106:8080/"
echo $url

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4. replace exting url https://px-apps.sys.comcast.net/lightning_apps/SwitcherApp/dist/index.html in /opt/residentapp.conf with lighting app url which is hosted on server

       for example your server providing url http://192.168.56.1:8080

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5. reboot the box 

• Method 2:

Validated on rdk-generic-hybrid-wpe-image_rdk-next image, download image link: https://drive.google.com/file/d/1_VgFDk_lRWLoMwv0JKQrZ4HUifN-F6Qa/view?usp=sharing

step 1: login to box $ ssh root@<your box ip>

step 2: copy refapp build into /opt/www

step3: $ cd /lib/rdk

step 4: $ vi residentApp.

...

sh

step 5: configure refapp url into residentApp.sh > find in residentApp.sh line "offlineApp="http://127.0.0.1:50050/lxresui/index.html" and replace with refapp url, Example: "offlineApp="http://127.0.0.1:50050/refapp/index.html"

Note: if you are downloading prebuild refapp from download link: build.zip after extract you will see build/build/<files>, you can copy build folder as it is and in this case url will be "offlineApp="http://127.0.0.1:50050/build/build/index.html".

step 6: After reboot app come up with a splash screen. Lighting

...

application will launch instead of switcher app. Main menu screen is displayed which allows users to launch apps, vod, and play video content.

RefApp Video Playback

• RDK 4.0 (rdk-generic-hybrid-image) Vs LGI  RefApp (rdk-generic-hybrid-refapp-image)

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Dependencies

• Lightning RefApp on RDK 4.0

  • Uses lighting sdk media player to play video, verified video playback using mp4 and HLS streams. 
  • Tested mp4 source: http://clips-media-aka.warnermediacdn.com/cnn/clips/2021-01/79895-97f21462b4db4236abcbd68a581[…]remarks-vpx-primary-58581-79895-1920x1080_8000k.mp4 
  • Tested hls source: //cdn.metrological.com/hls/greenland720.m3u8
  • Lightning (a javascript TV app development framework) refapp is a web based app, which runs on browser (supports WebGL). To run this wpe framwork or rdkbrowser2 is required.
  • sessionmanager, rmfstreamer, spark environment, nodejs and LGI based IP player not required.

• Lightning RefApp on Operator reference image (rdk-generic-hybrid-refapp-image)

  • uses various native RDK components such as spark, rmfstreamer with sessionmanager, IP players (aamp and Liberty IPplayer) to play QAM source, IP video streams (hls/dash).

 Reference Video