dlna bundles - osgi as a media gateway

© Hitachi Solutions, Ltd. 2011. All rights reserved.

OSGi Devcon 2011

Hitachi Solutions

Mar 24, 2011

Shinya Nobuoka

DLNA Bundles – OSGi as a Media Gateway


• Motivation

Outline

• What is DLNA? Why?

• DLNA bundles

• Applications

• Summary

1


Who we are

2

OSGi bundle developer at Hitachi Solutions

Shinya Nobuoka

Hitachi Solutions

- System Integrator/Developer

- Location: Tokyo, Japan

- Providing OSGi-certified product

“SuperJ Engine Framework”


• Motivation

Outline


• DLNA bundles

• Applications

• Summary

3


Motivation

What is the killer application/service on OSGi?

We focused on Media services

Idea & Objective:

Develop DLNA bundles those enable media

services through the internet

OSGi

Home Gateway

DLNA

bundles

Video Site

Friend’s Home

Picture SharingVideo

DLNA

Device

DLNA

Picture

4


• Motivation

Outline

• What is DLNA? Why?• DLNA bundles

• Applications

• Summary

5


What is DLNA?

DLNA Standard for sharing media contents among

home devices on the LAN

6

Player (DMP/DMR)Server (DMS)

(1) play

(2) control

Controller

(DMC)

Video

(Case 1) Watch a video in recorder from TV

(Case 2) Use cell phone as a remote controller


Why DLNA?

DLNA is a widely accepted standard on

home network area

There are a lot of home devices those

support DLNA

PCSmart Phone

HDD Recorder

TV

Game Devices

9000 DLNA-certified products

440 million DLNA-certified devices

7


• Motivation

Outline

• DLNA bundles• Applications

• Summary


8


DLNA Bundles Overview

OSGi

UPnP

DMS Core DMC Core

DMS Proxy HTML DMCUSB DMS

Make HGW

to be a DMS

Contents

Get media files from

the internet, open it for

home net.

Video Site

Control DLNA

devices from

browser

controlDLNA

[Issue 1] How to implement DLNA stack

[Issue 2] Getting internet contents into DLNA9


How to implement DLNA stack 1/3

DLNA is based on UPnP (Universal Plug and Play)

UPnP is standardized as a OSGi service.Basic idea is to implement DLNA service on the

UPnP service

UPnP

DLNAAutomatic device

discovery on the

same network

Media contents sharing

among electric devices

(e.g. TV, recorder,..)

UPnP (stack)

DLNA App

But..10

DLNA (stack)


DLNA App

Problem

UPnP service does not provide functions needed to

implement DLNA service

Example Case

11

DLNA app needs <dlna:> tag info inserted into UPnP message


UPnP service has no means to include <dlna:> tag info

into UPnP message

Need to extend UPnP service

Original interface of UPnP should not be changed

(else it causes compatibility problem)

DLNA

device

UPnP

DLNA

<?xml…>

<device>

…

<dlna:X_DLNADOC…>

DMS-1.50

</dlna:X_DLNADOC>

© Hitachi Solutions, Ltd. 2011. All rights reserved. 12

Our Solution

Add “hidden interface” to UPnP by using

Dictionary argument

UPnP

DLNA

UPnP.device.type: urn:schemas…

UPnP.device.manufacturer: Hitachi

…

DLNA.x_dlnadoc: DMS-1.50

Device info

DLNA App

<?xml…>

<device>

…

<dlna:X_DLNADOC…>

DMS-1.50

</dlna:X_DLNADOC>

DLNA

device

Dictionary (Map)

object


UPnP service adds <dlna:> tag info into UPnP message only

if <dlna:> tag info was present in the Dictionary argument

from DLNA App

Example Case (cont.)


DMS ProxyDLNA

device

・ -------・ -------・ -------・ -------

contents list

・ -------・ -------・ -------・ -------

DLNA

contents list

contents filecontents file

13

UPnP

Getting internet contents into DLNA 1/4

Idea: DMS Proxy

DMS (DLNA server) which get contents from the

internet and show them as DLNA contents

Video Site X

Picture Site YDLNA

DLNA

protocol

1. Convert contents list to DLNA format/protocol

2. Transcode videos (flv, mp4) to DLNA format (mpeg2)

© Hitachi Solutions, Ltd. 2011. All rights reserved. 14


Implementation issues of DMS Proxy on HGW

1. Lack of CPU power for video transcoding

Solution: Transcoding Server

2. Implementation cost of DLNA applications

Solution: DMS Core


Enables real-time transcoding using server’s

CPU resource

Can be worked on PlugComputer, PC, etc..

Video Site X

DLNA

device

Transcoding

Server

FLVMPEG2MPEG2

15

UPnP

Transcoding Server


DMS Proxy


MPEG2

DMS Core

Video Site X

Picture Site Y

Simple API・ -------・ -------・ -------・ -------

DLNA

DLNA

device

• Generate DLNA

contents list

• conceal the detail of

DLNA protocol

• Get contents list

• Get contents file Picture Site X

16

UPnP

Video Site Y

Provides core functions for implementing DMS

Simplifies DMS application development

・ -------・ -------・ -------・ -------


DMS Core


• Motivation

Outline

• DLNA bundles

• Applications• Summary


17


DMS Proxy for a video site

Use smart phone as a controller

Transcoding

Server

Video Site A

DLNA

device

Smart Phone

Select a video,

push it to DLNA device

(1)

(2)

(3)

(4)

OSGi

DMC Core

18

Video Site X

(DMS Proxy)

DMS Core


My HomeFriend’s Home

(e.g. Parents)

(1) Take picture,

upload to HGW (2) Send

OSGi

(３) Send

DLNA

Eye-Fi

card

19

Picture sharing between homes

Send pictures to friend’s home

DMS/DMC Core

DLNA

Picture Frame

Pic Reciever


• Motivation

Outline

• DLNA bundles

• Applications

• Summary


20


Summary

Developed DLNA bundles those can be

used for internet-based media service DLNA stack can be implemented by

extending UPnP service

Server side transcoding is needed for real time

streaming of video files

It is possible to bring internet contents into

local DLNA network

There are many possible media services

waiting to be implemented with DLNA

bundles

21


Thank you!

Shinya Nobuoka

[email protected]

DLNA is a registered trademark and DLNA Certified is a trademark of the Digital Living Network Alliance.

Eye-Fi is a registered trademark of Eye-Fi, inc.

UPnP is a trademark of the UPnP Implementers Corporation.

All other trademarks or registered trademarks are the property of their respective owners.

http://www.hitachi-solutions.com/

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dlna bundles - osgi as a media gateway

Technology

dlna contents

dlna hitachi solutions

dlna standard

dlna stackissue

dlna formatprotocol

dlna bundles osgi

hitachi dms

dlna mpeg2 dms core