falconia has submitted this change. ( https://gerrit.osmocom.org/c/libosmocore/+/36895?usp=email )

Change subject: include/osmocom/gsm: add rtp_extensions.h ......................................................................

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 --- M include/osmocom/gsm/Makefile.am A include/osmocom/gsm/rtp_extensions.h 2 files changed, 39 insertions(+), 0 deletions(-)

Approvals: Jenkins Builder: Verified laforge: Looks good to me, approved pespin: Looks good to me, but someone else must approve

diff --git a/include/osmocom/gsm/Makefile.am b/include/osmocom/gsm/Makefile.am index 5678a51..e42ffec 100644 --- a/include/osmocom/gsm/Makefile.am +++ b/include/osmocom/gsm/Makefile.am @@ -50,6 +50,7 @@ oap_client.h \ rlp.h \ rsl.h \ + rtp_extensions.h \ rxlev_stat.h \ sysinfo.h \ tlv.h \ diff --git a/include/osmocom/gsm/rtp_extensions.h b/include/osmocom/gsm/rtp_extensions.h new file mode 100644 index 0000000..edea431 --- /dev/null +++ b/include/osmocom/gsm/rtp_extensions.h @@ -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