5GMS Media Session Handler

This repository holds the 5GMS Media Session Handler implementation of the 5G-MAG Reference Tools. Note that currently this implementation only supports downlink media streaming.

Introduction

The 5GMS Media Session Handler is a 5GMS Client component that forms part of the 5G Media Services framework as defined in ETSI TS 126.501.

5GMS Downlink Media Session Handler

A Media Session Handler first retrieves its configuration (“Service Access Information”) from the 5GMSd AF at reference point M5d and then uses this configuration information to activate and exploit the currently provisioned 5GMSd features. In addition, the Media Session Handler exposes APIs via M6 to the 5GMSd-Aware Application and to the Media Player (for downlink streaming).

Specifications

A list of specification related to this repository is available in the Standards Wiki.

About the implementation

The 5GMSd Media Session Handler is an Android application that implements functionality for 5G Media Streaming media session handling. It is implemented as an Android Messenger Service that communicates via Inter Process Communication (IPC) with other Android libraries and applications such as the Media Stream Handler and the 5GMSd-Aware Application.

Downloading

Release versions can be downloaded from the releases page.

The source can be obtained by cloning the github repository.

cd ~
git clone https://github.com/5G-MAG/rt-5gms-media-session-handler.git

Install dependencies

The 5GMS-Aware Application requires the Common Android Library to run.

It is included as Maven dependencies in the build.gradle:

dependencies {
   implementation 'com.fivegmag:a5gmscommonlibrary:1.0.0'
}

To install the dependencies follow the installation guides in the Readme documentation of the project. Make sure to publish it as a local Maven repository:

• Common Android Library

Building

Call the following command in order to generate the apk bundles.

./gradlew assemble

The resulting apk bundles can be found in app/build/outputs/apk. The debug build is located in debug folder the release build in the release folder.

Install

To install the apk on an Android device follow the following steps:

1. Connect your Android device to your development machine
2. Call adb devices to list the available Android devices. The output should look like the following:

List of devices attached
CQ30022U4R	device

3. Install the apk on the target device: adb -s <deviceID> install -r app/build/outputs/apk/debug/app-debug.apk. Using -r we reinstall an existing app, keeping its data.

Running

After installing the Media Session Handler application can be started from the Android app selection screen.

As an alternative we can also run the app from the command line: adb shell am start -n com.fivegmag.a5gmsmediasessionhandler/com.fivegmag.a5gmsmediasessionhandler.MainActivity

Development

This project follows the Gitflow workflow . The development branch of this project serves as an integration branch for new features. Consequently, please make sure to switch to the development branch before starting the implementation of a new feature.