forked from osmocom/wireshark
118 lines
2.6 KiB
Groff
118 lines
2.6 KiB
Groff
-- ASN description of MPEG Packetized Elementary Stream (PES)
|
|
-- Written by Shaun Jackman <sjackman@gmail.com>
|
|
-- Copyright 2007 Shaun Jackman
|
|
--
|
|
-- This program is free software; you can redistribute it and/or
|
|
-- modify it under the terms of the GNU General Public License.
|
|
|
|
MPEG DEFINITIONS ::= BEGIN
|
|
|
|
PES ::= SEQUENCE {
|
|
prefix OCTET STRING (SIZE (3)),
|
|
stream INTEGER {
|
|
picture (0),
|
|
sequence-header (179),
|
|
sequence-header-extension (181),
|
|
group-of-pictures (184),
|
|
program-end (185),
|
|
pack-header (186),
|
|
system-header (187),
|
|
program-stream-map (188),
|
|
private-stream-1 (189),
|
|
padding-stream (190),
|
|
private-stream-2 (191),
|
|
audio-stream (192),
|
|
video-stream (224)
|
|
} (0..255)
|
|
}
|
|
|
|
Stream ::= SEQUENCE {
|
|
length INTEGER (0..65535),
|
|
must-be-one BOOLEAN,
|
|
must-be-zero BOOLEAN,
|
|
scrambling-control INTEGER {
|
|
not-scrambled (0)
|
|
} (0..3),
|
|
priority BOOLEAN,
|
|
data-alignment BOOLEAN,
|
|
copyright BOOLEAN,
|
|
original BOOLEAN,
|
|
pts-flag BOOLEAN,
|
|
dts-flag BOOLEAN,
|
|
escr-flag BOOLEAN,
|
|
es-rate-flag BOOLEAN,
|
|
dsm-trick-mode-flag BOOLEAN,
|
|
additional-copy-info-flag BOOLEAN,
|
|
crc-flag BOOLEAN,
|
|
extension-flag BOOLEAN,
|
|
header-data-length INTEGER (0..255)
|
|
}
|
|
|
|
Sequence-header ::= SEQUENCE {
|
|
horizontal-size BIT STRING (SIZE (12)),
|
|
vertical-size BIT STRING (SIZE (12)),
|
|
aspect-ratio INTEGER {
|
|
aspect-1to1 (1),
|
|
aspect-4to3 (2),
|
|
aspect-16to9 (3),
|
|
aspect-2-21to1 (4)
|
|
} (0..15),
|
|
frame-rate ENUMERATED {
|
|
reserved (0),
|
|
fr (23976),
|
|
fr (24000),
|
|
fr (25000),
|
|
fr (29970),
|
|
fr (30000),
|
|
fr (50000),
|
|
fr (59940),
|
|
fr (60000)
|
|
},
|
|
bit-rate BIT STRING (SIZE (18)),
|
|
must-be-one BOOLEAN,
|
|
vbv-buffer-size BIT STRING (SIZE (10)),
|
|
constrained-parameters-flag BOOLEAN,
|
|
load-intra-quantiser-matrix BOOLEAN,
|
|
load-non-intra-quantiser-matrix BOOLEAN
|
|
}
|
|
|
|
Sequence-extension ::= SEQUENCE {
|
|
must-be-0001 BIT STRING (SIZE (4)),
|
|
profile-and-level INTEGER (0..255),
|
|
progressive-sequence BOOLEAN,
|
|
chroma-format INTEGER (0..3),
|
|
horizontal-size-extension INTEGER (0..3),
|
|
vertical-size-extension INTEGER (0..3),
|
|
bit-rate-extension BIT STRING (SIZE (12)),
|
|
must-be-one BOOLEAN,
|
|
vbv-buffer-size-extension INTEGER (0..255),
|
|
low-delay BOOLEAN,
|
|
frame-rate-extension-n INTEGER (0..3),
|
|
frame-rate-extension-d INTEGER (0..3)
|
|
}
|
|
|
|
Group-of-pictures ::= SEQUENCE {
|
|
drop-frame-flag BOOLEAN,
|
|
hour INTEGER (0..32),
|
|
minute INTEGER (0..64),
|
|
must-be-one BOOLEAN,
|
|
second INTEGER (0..64),
|
|
frame INTEGER (0..64),
|
|
closed-gop BOOLEAN,
|
|
broken-gop BOOLEAN,
|
|
must-be-zero BIT STRING (SIZE (5))
|
|
}
|
|
|
|
Picture ::= SEQUENCE {
|
|
temporal-sequence-number BIT STRING (SIZE (10)),
|
|
frame-type INTEGER {
|
|
i-frame (1),
|
|
p-frame (2),
|
|
b-frame (3),
|
|
d-frame (4)
|
|
} (0..7),
|
|
vbv-delay BIT STRING (SIZE (16))
|
|
}
|
|
|
|
END
|