Extensible Binary Meta Language
draft-ietf-cellar-ebml-02
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cellar S. Lhomme
Internet-Draft
Intended status: Standards Track D. Rice
Expires: August 30, 2017
M. Bunkus
February 26, 2017
Extensible Binary Meta Language
draft-ietf-cellar-ebml-02
Abstract
This document defines the Extensible Binary Meta Language (EBML)
format as a generalized file format for any type of data in a
hierarchical form. EBML is designed as a binary equivalent to XML
and uses a storage-efficient approach to build nested Elements with
identifiers, lengths, and values. Similar to how an XML Schema
defines the structure and semantics of an XML Document, this document
defines how EBML Schemas are created to convey the semantics of an
EBML Document.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
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This Internet-Draft will expire on August 30, 2017.
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
Lhomme, et al. Expires August 30, 2017 [Page 1]
Internet-Draft EBML February 2017
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Notation and Conventions . . . . . . . . . . . . . . . . . . 3
3. Security Considerations . . . . . . . . . . . . . . . . . . . 6
4. Structure . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. Variable Size Integer . . . . . . . . . . . . . . . . . . . . 7
5.1. VINT_WIDTH . . . . . . . . . . . . . . . . . . . . . . . 7
5.2. VINT_MARKER . . . . . . . . . . . . . . . . . . . . . . . 8
5.3. VINT_DATA . . . . . . . . . . . . . . . . . . . . . . . . 8
5.4. VINT Examples . . . . . . . . . . . . . . . . . . . . . . 8
6. Element ID . . . . . . . . . . . . . . . . . . . . . . . . . 9
7. Element Data Size . . . . . . . . . . . . . . . . . . . . . . 10
8. EBML Element Types . . . . . . . . . . . . . . . . . . . . . 12
8.1. Signed Integer Element . . . . . . . . . . . . . . . . . 13
8.2. Unsigned Integer Element . . . . . . . . . . . . . . . . 13
8.3. Float Element . . . . . . . . . . . . . . . . . . . . . . 13
8.4. String Element . . . . . . . . . . . . . . . . . . . . . 13
8.5. UTF-8 Element . . . . . . . . . . . . . . . . . . . . . . 14
8.6. Date Element . . . . . . . . . . . . . . . . . . . . . . 14
8.7. Master Element . . . . . . . . . . . . . . . . . . . . . 14
8.8. Binary Element . . . . . . . . . . . . . . . . . . . . . 15
9. EBML Document . . . . . . . . . . . . . . . . . . . . . . . . 15
9.1. EBML Header . . . . . . . . . . . . . . . . . . . . . . . 15
9.2. EBML Body . . . . . . . . . . . . . . . . . . . . . . . . 16
10. EBML Stream . . . . . . . . . . . . . . . . . . . . . . . . . 16
11. Elements semantic . . . . . . . . . . . . . . . . . . . . . . 16
11.1. EBML Schema . . . . . . . . . . . . . . . . . . . . . . 16
11.1.1. Element . . . . . . . . . . . . . . . . . . . . . . 17
11.1.2. Attributes . . . . . . . . . . . . . . . . . . . . . 17
11.1.3. Element . . . . . . . . . . . . . . . . . . . . . . 17
11.1.4. Attributes . . . . . . . . . . . . . . . . . . . . . 18
11.1.5. Element . . . . . . . . . . . . . . . . . . . . . . 22
11.1.6. Attributes . . . . . . . . . . . . . . . . . . . . . 22
11.1.7. Element . . . . . . . . . . . . . . . . . . . . . . 23
11.1.8. Element . . . . . . . . . . . . . . . . . . . . . . 23
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