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include/osmocom/gsm: add rtp_extensions.h 

Previous patches add definitions of GSM0808_IE_THEMWI_RTP_EXTENSIONS
and RSL_IE_OSMO_RTP_EXTENSIONS to BSSMAP and RSL; this new header file
provides definitions for individual bits in the single value octet
of the new IE.

Related: OS#6448
Change-Id: I0eccfe5ddcf44f8f20440acb01e2d4870ec0cd91
This commit is contained in:
Mychaela N. Falconia 2024-05-22 00:40:22 +00:00 committed by falconia
parent a636b8d2ad
commit d8ac068478
2 changed files with 24 additions and 0 deletions
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1
include/osmocom/gsm/Makefile.am
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@ -50,6 +50,7 @@ osmogsm_HEADERS = \
oap_client.h \
rlp.h \
rsl.h \
rtp_extensions.h \
rxlev_stat.h \
sysinfo.h \
tlv.h \

23
include/osmocom/gsm/rtp_extensions.h Normal file
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@ -0,0 +1,23 @@
/*
* Themyscira Wireless Technical Specification TW-TS-003 defines a BSSMAP
* extension whereby a CN implementation and a BSS implementation can
* negotiate the use of non-3GPP-standard extensions to RTP user plane,
* extensions that modify RTP formats counter to the stipulations of
* 3GPP TS 48.103. There is also a private Osmocom-defined IE in Abis RSL
* that communicates the same RTP extensions from OsmoBSC to OsmoBTS.
*
* This header file defines the meaning of the bits in the first (and currently
* only) value octet of the TLV IE added to BSSMAP and RSL interfaces,
* namely, GSM0808_IE_THEMWI_RTP_EXTENSIONS and RSL_IE_OSMO_RTP_EXTENSIONS.
* It is based on this authoritative definition:
*
* https://www.freecalypso.org/specs/tw-ts-003-v010002.txt
*
* Section 5.3 in the above specification defines the assignment of
* individual bits in the single value octet.
*/
#pragma once
#define OSMO_RTP_EXT_TWTS001 0x01
#define OSMO_RTP_EXT_TWTS002 0x02