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Introduction

Advanced Adaptive Media Player (AAMP) is an application which uses gstreamer (AAMP) to present clear/encrypted HTTP Live Streams.(HLS)

HLS is a Media Streaming Protocol used for delivering visual and audio media over the internet. HLS uses the HTTP protocol and hence users can stream media from their regular web server. To Stream HLS data,source files are encoded at different data rates and will be split into chunks with the .ts file extension  and  manifest file  .M3U8  file is created  for maintaining index for the video chunks. For example, M3U8 file may give references to online files for an internet radio station. M3U8(MP3 URL that uses  UTF-8-encoding)is a computer file format for a multimedia playlist.Although originally designed for audio files, such as MP3, it is now used to point  both audio and video sources

Implementation details

Implemented containers

Platformcontrol

This utility is available in /usr/bin  to test aamp plugin which by default takes aamp HLS  as aamps://tungsten.aaplimg.com/VOD/bipbop_adv_example_v2/master.m3u8 

Rmfstreamer

AAMP can be tested with gst-launch using playbin.

Building procedure

DEBUG Logs

To Enable logs,please export following 

export GST_DEBUG=2,aamp:3,webkitmediaplayer:5

Test cases

aamp://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8

aamps://tungsten.aaplimg.com/VOD/bipbop_adv_example_v2/master.m3u8

aamps://mnmedias.api.telequebec.tv/m3u8/29880.m3u8 

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 The purpose of this section is to describe the  new implemented solution to have a secure containerized RDK build on emulator. This implementation done from the reference of

Raspberry pi platform.

The intent of this page is to be used as a walk-through to all the relevant information present in the section.

Implementation details

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   Containers layer - meta-rdk-containers:    

•     Consists of main container image(rdk-generic-hybrid-lxc-image).
•     Latest "lxc-container-generator" has been added for container generation at do_rootfs stage.
•     Distro feature and latest lxc version updated in qemux86hybsecure.conf.

    Emulator layer - meta-rdk-bsp-emulator:

•        Added emulator specific package groups and plugins to the container image.

    New Container generation process:

     This subsection describes how the new container generation process is replacing the earlier process.

•       In this process containers will be generated using  "lxc-container-generator"  recipe, which will use corresponding .xml files to generate containers.
•       All  dependencies(such as required binaries,libraries,script files) will be provided in each container .XML file.
•       For permissions of files  "add-users-groups-file-owners-and-permissions.inc" file has been added.
•       At rootfs stage containers will be generated in /container path of rootfs.
•       Each container will consists of corresponding script (.sh) file for launching that particular container.
•       Every process will be launched from corresponding component service file. Single (or) multiple processes can be launched/attached to container.

   XML and conf files:

•     All required XML and configuration files are placed along with lxc-container-generator recipe in meta-rdk-bsp-emulator layer.

  Service files:     

•   In platformcontrol container: 

                 Three service files added for launching corresponding processes inside container (sysmgr.service, irmgr.service and dsmgr.service) .        

•   In rmfstreamer container:

                 rmfstreamer.service file has been added.

Implemented containers

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Platformcontrol

• runs sysmgr,irmgr and dsmgr processes.
• sysmgr will be launched in new container using lxc-execute.
• irmgr and dsmgr processes has been attached to same container using lxc-attach.

Rmfstreamer

•  runs rmfstreamer.
•  rmfstreamer will be launched in new container using lxc-execute.

Building procedure

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•     repo init -u https://code.rdkcentral.com/r/manifests -b rdk-next -m rdkv-asp-extsrc.xml
•     repo sync --no-tags
•     source meta-cmf-bsp-emulator/setup-environment
•     meta-rdk-containers/conf/machine/qemux86hybsecure.conf
•     bitbake rdk-generic-hybrid-lxc-image

DEBUG Logs

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• strace can give more debug information about containers:

          Example:
          strace -f -o lxc-execute.log /usr/bin/lxc-attach -n PLATFORMCONTROL -f /container/PLATFORMCONTROL/conf/lxc.conf -u 704 -g 704  -- /usr/bin/dsMgrMain

• lxc-execute.log for debugging purpose.

Test cases

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•    RMFAPP can be used to verify rmfstreamer container.

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