• Device Details
• Prerequisite
• Playing Test streams with Rialto
• Running YouTube with Rialto
• Pipeline Diagram
• Known Issues / limitations

Device Details

Prerequisite

• Build the latest Raspberry Pi4/Pi3 Image using below links
  RPI 4B model reference platform for RDKV - RDK - RDK Central Wiki
  RDK-V rdk-next Yocto 3.1 dunfell build for Raspberrypi - RDK - RDK Central Wiki
  
  

Playing Test streams with Rialto

• Stop wpeframework 

  systemctl stop wpeframework

• For Rpi4 platform - Run the below command in all terminals where you need to run the rialto commands.

  export WESTEROS_DRM_CARD=/dev/dri/card0

  Note:  In case of Rpi3 platform, no need to run the above command. Since, Rpi3 uses only one master card.

  
  

• For below steps, Refer Running YouTube with Rialto - Preferred Program - RDK Central Wiki page.
  - Run westeros
  - Start server manager simulator
  - Run Rialto Server for YouTube
  
  

• Command used to run test streams:

  GST_REGISTRY=/tmp/rialto-registry.bin RIALTO_DEBUG=5 RIALTO_CONSOLE_LOG=1 RIALTO_SOCKET_PATH=/tmp/rialto-0 XDG_RUNTIME_DIR=/tmp WAYLAND_DISPLAY=westeros-cobalt LD_LIBRARY_PATH="$PWD/usr/lib" COBALT_CONTENT_DIR="$PWD/usr/share/content/data" RIALTO_CLIENT_BACKEND_LIB="/usr/lib/libRialtoClient.so" gst-launch-1.0 playbin uri=file:///tmp/sample-video-file-for-testing.mp4

           Note: 

• • Make sure rialto-registry.bin is cleared
    rm /tmp/rialto-registry.bin
    
  • PFA sample-video-file-for-testing_mp4.zip for reference.

Playing HLS with Rialto

• Stop wpeframework 

  systemctl stop wpeframework

• For Rpi4 platform - Run the below command in all terminals where you need to run the rialto commands.

  export WESTEROS_DRM_CARD=/dev/dri/card0

  Note:  In case of Rpi3 platform, no need to run the above command. Since, Rpi3 uses only one master card.

  
  

• Run westeros

  XDG_RUNTIME_DIR=/tmp LD_PRELOAD=/usr/lib/libwesteros_gl.so.0 westeros --renderer /usr/lib/libwesteros_render_embedded.so.0.0.0 --embedded --display "westeros-cobalt" --window-size 1920x1080

• Start server manager simulator:

  RIALTO_DEBUG=5 RIALTO_SESSION_SERVER_STARTUP_TIMEOUT_MS=15000 SESSION_SERVER_ENV_VARS='XDG_RUNTIME_DIR=/tmp;RIALTO_SINKS_RANK=0;GST_REGISTRY=/tmp/rialto-server-gstreamer-cache.bin;WAYLAND_DISPLAY=westeros-cobalt;FORCE_SAP=TRUE;FORCE_SVP=TRUE' /usr/bin/RialtoServerManagerSim

  Note:

   If you are not able to play HLS using rialto-mse sinks, then try to increase value of RIALTO_SESSION_SERVER_STARTUP_TIMEOUT_MS (>2000) or remove the TIMEOUT. So, there will be no startup limit.

• Run Rialto Server for YouTube:

  curl -X POST -d "" localhost:9008/SetState/YouTube/Active

  
  

• Command used to run test streams:

  GST_REGISTRY=/tmp/rialto-registry.bin RIALTO_DEBUG=5 RIALTO_CONSOLE_LOG=1 RIALTO_SOCKET_PATH=/tmp/rialto-0 XDG_RUNTIME_DIR=/tmp WAYLAND_DISPLAY=westeros-cobalt LD_LIBRARY_PATH="$PWD/usr/lib" COBALT_CONTENT_DIR="$PWD/usr/share/content/data" RIALTO_CLIENT_BACKEND_LIB="/usr/lib/libRialtoClient.so" gst-launch-1.0 playbin uri=https://bitmovin-a.akamaihd.net/content/MI201109210084_1/mpds/f08e80da-bf1d-4e3d-8899-f0f6155f6efa.mpd

           Note: 

• • Make sure rialto-registry.bin is cleared
    rm /tmp/rialto-registry.bin

Running YouTube with Rialto

• Stop wpeframework 

  systemctl stop wpeframework

• For Rpi4 platform - Run the below command in all terminals where you need to run the rialto commands.

  export WESTEROS_DRM_CARD=/dev/dri/card0

  Note:  In case of Rpi3 platform, no need to run the above command. Since, Rpi3 uses only one master card.

  
  

• For below steps, Refer Running YouTube with Rialto - Preferred Program - RDK Central Wiki page.
  - Run westeros
  - Start server manager simulator
  - Run Rialto Server for YouTube
  
  

• Command used to launch YouTube Homepage.

  GST_REGISTRY=/tmp/rialto-registry.bin RIALTO_DEBUG=5 RIALTO_SOCKET_PATH=/tmp/rialto-0 XDG_RUNTIME_DIR=/tmp WAYLAND_DISPLAY=westeros-cobalt LD_LIBRARY_PATH="$PWD/usr/lib" COBALT_CONTENT_DIR="/usr/share/content/data" RIALTO_CLIENT_BACKEND_LIB="/usr/lib/libRialtoClient.so" /usr/bin/cobalt_bin

           Note: 

• • There is a small correction in the below "Run YouTube" Command mentioned in rdk wiki page

  • remove "$PWD" in COBALT_CONTENT_DIR

  • Make sure rialto-registry.bin is cleared
    rm /tmp/rialto-registry.bin
    
    

Pipeline Diagram

Application Session Management - Overview

App Lifecycle

Known issues / Limitations

Encrypted playback is not verified as a part of POC.