Page History

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Introduction

Design Considerations

• Decision Overview

< Describe the system design in broad terms . Consider benefits, costs and schedule and technical risks. Describe how the proposed solution aligns with the enterprise architecture. >

• Other Considerations (DAR)

<Alternative designs considered and why one was chosen>

Architecture

• Layout

           <Architecture Diagram>

• Communication

          <Describe the communication between the sub-systems. (Diagrams may be used to illustrate communications). >

External Interfaces (Input/Output files or data sets)

< Identify input interfaces, function call protocol, and the nature of the data structures passed across the interface between the sub-modules>

< Identify output interfaces, function call protocol, and the nature of the data structures passed across the interface. >

Data Model

<Provide a description of the data model>

Limitations

             < Describe the cases that are identified as problem but unable to report to it due to various factors. Describe the factors >

Future Enhancements

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This page dedicated to understanding of High level design for EMS Media Streaming in R-Pi Zero.

• Supported WiFi connection.
• v4l2 Driver is used to capture data from RPI-0 camera Device.
• /dev/video0 is the RPI-0 camera device to capture data.
• Supported Soc level Gstreamer plugins to capture data from camera device.
• Supported H264 encoding format.
• Supported SD,HD,FUll HD resolution.
• Supported automatic boot-up process for EMS functionality.

Architecture

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Design Considerations

• Gstreamer Soc Implementation for RPI-0 Camera
  

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• Enabled V4l2 driver in part of RPI-0 to capture data from /dev/video0  device.
• Implemented soc level gstreamer pipeline with v4l2src plugin,omxh264enc plugin and appsink plugin.
• V4l2src plugin is used to capture raw data from camera through v4l2 driver and transmitted captured raw data into omxh264enc plugin to encode raw data into h264 encoding format.After that transmitted encoded data into appsink plugin to wrote encoded data into 8080 port of mongoose server.
• Registered 8080 port in Mongoose server to listen data.
• Supported resolution SD( 640*480 , 720*576 ) ,HD( 1280*720 ) and Full HD( 1920*1080 )

• Gstreamer Implementation in EMS
  

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• Implemented EMS side gstreamer pipeline with souphttpsrc plugin and appsink plugin.
• Souphttpsrc plugin is getting the encoded data from Mongoose server from 8080 port and transmitted encoded data into appsink plugin to feed the data into EMS.
• Supported ASCLI interface to configure pull stream property and to start webrtc to transmit data into ERS server through WiFi.
• Browser getting the data from ERS server and it display the received content.