CLUE Working Group R. Presta
Internet-Draft S P. Romano
Intended status: Informational University of Napoli
Expires: March 31, 2013 September 27, 2012
An XML Schema for the CLUE data model
draft-presta-clue-data-model-schema-00
Abstract
This document provides an XML schema file for the definition of CLUE
data model types.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. XML Schema . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Sample XML file . . . . . . . . . . . . . . . . . . . . . . . 9
5. Informative References . . . . . . . . . . . . . . . . . . . . 14
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1. Introduction
This document provides an XML schema file for the definition of CLUE
data model types. The schema is based on information contained in
[I-D.ietf-clue-framework] and also relates to the data model sketched
in [I-D.romanow-clue-data-model]. The document actually represents a
strawman proposal aiming at the definition of a coherent structure
for all the information associated with the description of a
telepresence scenario.
2. Terminology
[TBD] Copy text from framework document.
3. XML Schema
This section contains the proposed CLUE data model schema definition.
The overall structure of the CLUE data has been derived starting from
a data type called "clueInfoType" which comprises the following
subelements:
mediaCaptures: the list of media captures available
captureScenes: the list of capture scenes
encodings: the list of individual encodings
encodingGroups: the list of encodings which have been grouped
together
simultaneousSets: the list of simultaneous capture sets
All of the above elements refer to concepts that have been introduced
and explained in [I-D.ietf-clue-framework] and
[I-D.romanow-clue-data-model]. Indeed, the mapping is not exactly
one-to-one because: (i) some details of the current data model were
not clear enough to be properly included in the schema herein
presented; (ii) we slightly modified naming conventions in order to
let schema elements better adhere to current XML best naming
practices; (iii) we sometimes changed the structure of some of the
data elements presented in [I-D.romanow-clue-data-model] in order to
enhance the semantic expressiveness of CLUE XML documents.
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4. Sample XML file
The following XML document represents a schema compliant example of a
CLUE telepresence scenario.
The example describes a scenario similar to the one in section 11.1
of [I-D.ietf-clue-framework]. There are 6 video captures:
VC0: the video from the left camera
VC1: the video from the central camera
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VC2: the video from the right camera
VC3: the video of the loudest segment of the room taken from the
central camera
VC4: the overall view of the telepresence room taken from the
central camera
VC5: the video associated with the slide stream
There are 2 audio captures:
AC0: the overall room audio
AC1: the audio associated with the slide stream presentation
left camera video
EG1
video
main
false
false
central camera video
EG1
video
main
false
false
right camera video
EG1
video
main
false
false
video capture of the loudest room segment
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EG1
video
main
false
true
zoomed out view of the room
EG1
video
main
false
false
presentation slides
EG1
video
slides
false
false
room audio
EG1
audio
main
false
mono
presentation audio
EG1
audio
slides
false
mono
main room scene
zoomed in participant videos
VC0
VC1
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VC2
room audio
AC0
loudest room segment
VC3
room view
VC4
presentation view
presentation video
VC5
presentation audio
AC1
H264
14
video
1080
60
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11
12
G711
64
audio
17
19
V_ENC1
A_ENC1
VC0
VC1
VC2
VC5
AC0
AC1
VC0
VC3
VC2
VC5
AC0
AC1
VC0
VC4
VC2
VC5
AC0
AC1
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5. Informative References
[I-D.ietf-clue-framework] Romanow, A., Duckworth, M., Pepperell,
A., and B. Baldino, "Framework for
Telepresence Multi-Streams",
draft-ietf-clue-framework-06 (work in
progress), July 2012.
[I-D.romanow-clue-data-model] Romanow, A. and A. Pepperell, "Data
model for the CLUE Framework",
draft-romanow-clue-data-model-01 (work
in progress), June 2012.
Authors' Addresses
Roberta Presta
University of Napoli
Via Claudio 21
Napoli 80125
Italy
EMail: roberta.presta@unina.it
Simon Pietro Romano
University of Napoli
Via Claudio 21
Napoli 80125
Italy
EMail: spromano@unina.it
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