Search by Tags

Evaluating the Multimedia Reference Image

 

Your progress

 

Overview

In the previous lesson from this guide, you have installed the latest version of the Reference Multimedia Image on your computer on module. It is natural to ask yourself "what can I do with it?". The current lesson addresses this question, focusing on things that don't require additional hardware or, at most, use consumer-grade electronics that you may have easy access to.

In this module you will:

  • Interact with some of the available features included in the Reference Multimedia Image.
Typographic Conventions

Prerequisites

For this Quickstart Guide:

  • Linux development PC.
  • Successfully completed the previous lesson from this guide.

For this lesson:

  • Successfully completed the previous lesson from this guide.

Step 1

On the board terminal, run a pre-compiled hello world:

# hello

Step 1

As soon as you boot the board, a Qt demo application will autorun at the startup.

Use the mouse connected to the board to evaluate the user interaction with the Qt demo application, for instance, how fluid it is on transitions and responsiveness.

While doing this, you may be interested in monitoring the system resources and the app performance such as RAM and CPU load on the Linux terminal with htop:

# htop

Step 2

Stop and disable the Qt demo using systemctl. First, learn how to use it on How to Autorun Application at the Start up in Linux - Systemd.

Then, find the name of the systemd service that starts the Qt demo on Video Encoding and Playback (Linux).

If the instructions above are a bit abstract, try the commands below:

# systemctl stop wayland-app-launch
# systemctl disable wayland-app-launch

Step 3

Run a graphical terminal emulator directly on the board:

# weston-terminal

You can close the weston-terminal and continue executing the next commands on the terminal opened through the debug UART.

Step 4

We include multimedia content for evaluation directly on the image, check out what is available:

# ls -lh /home/root/*

Step 5

Display some of the pictures included in the Multimedia Reference Image, under /home/root/pictures, with the gpicview image viewer:

# gpicview /home/root/pictures/<image name>

Step 6

Play some of the videos included in the Multimedia Reference Image, under /home/root/video:

Takeaway

There are many other things that you can test with the Multimedia Reference Image. This lesson covers some of the features that are easy to test and don't require additional hardware. To learn more about all of the available features and how to use them, please refer to the BSP Layers and Reference Images for Yocto Project Software.

If you are wondering how to add or remove packages from our image, including your own application, keep on following our Quickstart Guide. In the next chapter, we'll walk you through it.

FAQ

How do I learn what is included in the Reference Multimedia Image?
How can I add or remove features from the Multimedia Reference Image?