Integration of SIP protocol in
Android Media Framework
EUROCON - International Conference on Computer as a Tool (EUROCON), 2011 IEEE
27-29 April 2011, PP1 - 4
Advisor : Lian-Jou Tsai
Student : Kuo-Sheng Hung
Date : 2013/03/27
最近研究方向
• Android在SIP協定上的相關應用
Outline
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Abstract
INTRODUCTION
ANDROID PLATAFORM
Android Media Framework
Streaming Protocols
INTEGRATION OF SIP PROTOCOL IN
OPENCORE FRAMEWORK
• CONCLUSION
Abstract
• Based on the current Android Media Framework , this paper
presents a possible architecture for the integration of the SIP
protocol.
• The integration of this architecture is to surpass the limitations of
the current Android platform and promote an improved
performance in the current SIP applications, which is reflected in a
lower power consumption of the device.
INTRODUCTION(1/2)
• Currently, the Android platform uses the Real Time Streaming
Protocol RTSP for streaming in real time.
• Its ability to manipulate a media (pause, play, stop, etc.), makes this
protocol an excellent choice for watching a stream.
INTRODUCTION(2/2)
• The paper is organized into three sections:
• Describes the Android platform
• Presents a new architecture for the integration of SIP on OpenCore
framework
• The conclusion of some of the most important aspects that are
needed for integrating the proposed architecture is drawn.
ANDROID PLATAFORM
• The Android platform, currently belonging to the Open Handset
Alliance, is a complete suite of open source softwar (operating
system, middleware and base applications) designed to run on low
power devices (Mobile Phones, PDAs, Tablet PCs) .
• Besides the base set of software that makes the device functional,
the Android platform offers an API (Android Software Development
Kit) to support the development of third party applications.
Android Media Framework
• The Media Player Service is an Android system service.
• This service is divided into four components: Media Recorder
Service, where the camera image is captured and manipulated
(photo and video);
• Vorbis and MIDI libraries, where every type of MIDI media and
Vorbis is handled, respectively;
• The OpenCore library, where all other media types, supported by the
Android platform, are treated.
OpenCore
• OpenCore is a Framework for the development of media
applications, providing features such as playback, streaming and
recording (audio and video) .
• Figure shows a high-level architecture of the OpenCore Framework.
Its architecture is divided into five layers, which are composed of six
components:
• Content Policy Manager, Multimedia Engines, Data Formats, Audio
Codecs, Video Codecs and Android Interface.
Streaming Protocols(1/2)
• As previously described in the data format layer, the OpenCore
Framework supports the protocols HTTP and RTSP for streaming
media.
Streaming Protocols(2/2)
• As can be seen in Figure, the Data Format layer contains several
nodes that are responsible for reading or recording media.
• The different types of nodes available in the Android OpenCORE are
compiled in the form of libraries on the system and are loaded at
runtime.
INTEGRATION OF SIP PROTOCOL IN
OPENCORE FRAMEWORK(1/3)
• The OpenCore framework is platform independent, so it can not
depend of external factors when using the SIP protocol on its
sessions.
• The SIP protocol must be integrated directly on the structure of the
OpenCore framework and not as part of the Android architecture.
• Hierarchically, the protocols RTSP and SIP are located in the data
layer, which is responsible for handling the information to be
decoded and reproduced.
INTEGRATION OF SIP PROTOCOL IN
OPENCORE FRAMEWORK(2/3)
• As we can see in Figure, the new SIP Node is located in the data
layer, and is a subcomponent of the Streaming Node.
• Simply put, when it is necessary for the OpenCore media
Framework to start manipulating the media, the data layer is then
responsible for the manipulation of data for playback.
INTEGRATION OF SIP PROTOCOL IN
OPENCORE FRAMEWORK(3/3)
• With the integration of the proposed architecture, it is expected that
applications using the SIP protocol for the establishment of
multimedia sessions can take advantage of all the potential of the
OpenCore media Framework.
• It is expected a reduction in energy consumption and an increase
performance for the devices.
CONCLUSION
• The integration of SIP in the Android Media Framework as a
protocol for establishing media sessions, brings new capabilities to
the multimedia world of these new devices.
• Another advantage of integrating the SIP into Androids media
service, is the reuse of libraries for the encoding and decoding of
media for the OpenCore Framework.
REFERENCES
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