1      Definition

A Data Type including the arrangement of the Objects of an Audio-Visual Scene.

2      Functional Requirements

Audio-Visual Basic Scene Geometry include:

  1. The ID of a Virtual Space (M-Instance) where it is or will be located.
  2. The ID of the Audio-Visual Scene Geometry.
  3. The number of Objects in the Scene.
  4. The number of Scenes in the Scene.
  5. The Space-Time Attributes of the Scene.
  6. The Spatial Attitudes and Qualifiers of
    1. Audio Objects.
    2. Speech Objects.
    3. Visual Objects.
  7. The Spatial Attitude of Audio-Visual Objects.

3      Syntax

https://schemas.mpai.community/OSD/V1.1/data/AudioVisualBasicSceneGeometry.json

4     Semantics

Label Size Description
Header N1 Bytes AV Basic Scene Geometry Header
·       Standard-AVBasicSceneGeometry 9 Bytes The characters “OSD-AVS-V”
·       Version N2 Bytes Major version – 1 or 2 characters
·       Dot-separator 1 Byte The character “.”
·       Subversion N3 Bytes Minor version – 1 or 2 characters.
MInstanceID N4 Bytes Identifier of M-Instance.
AVBasicSceneGeometryID N5 Bytes Identifier of the AV Object.
ObjectCount N6 Bytes Number of Objects in Scene.
AVBasicSceneSpaceTime N8 Bytes Space and Time of AV Basic Scene Geometry.
AVSceneAudioObjects[] N9 Bytes Set of Audio Objects.
– AudioObjectSpaceTime N10 Bytes Space and Time of Audio Object.
– AudioObjectQualifiers N11 Bytes Qualifiers of Audio Object.
AVSceneVisualObjects[] N12 Bytes Set of Visual Objects
– VisualObjectSpaceTime N13 Bytes Space and Time of Visual Object.
– VisualObjectQualifiers N14 Bytes Qualifiers of Visual Object.
AVSceneAVObjects[] N15 Bytes Set of AV Objects
– AVObjectSpaceTime N16 Bytes ID of Attribute of AV Scene Object
DescrMetadata N18 Bytes Descriptive Metadata

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