falconia has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmocore/+/32197 )

Change subject: include/osmocom/gsm/protocol: add gsm_06_31.h ......................................................................

include/osmocom/gsm/protocol: add gsm_06_31.h

GSM 06.31 spec section 6.1.1 (also duplicated in GSM 06.81, same section) defines numeric values 0, 1 and 2 as denoting three possible outcomes of the SID classification procedure by which an incoming FR/EFR codec frame is classified as speech or valid SID or invalid SID. These exact numeric values for SID classification appear in at least one public external interface (bits C13 & C14 in TRAU-UL frames, used on T1/E1 Abis and in TS 28.062 in-band TFO) and at least one reverse-engineered legacy vendor interface (bits [4:3] of a_dd[0] status word in GSM MS DSPs from TI), hence it is useful to have them defined in a formal GSM protocol header file.

Change-Id: If004b668778d3d9cf6cd998b3af2dbfa83691529 --- M include/osmocom/gsm/protocol/Makefile.am A include/osmocom/gsm/protocol/gsm_06_31.h 2 files changed, 33 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/97/32197/1

diff --git a/include/osmocom/gsm/protocol/Makefile.am b/include/osmocom/gsm/protocol/Makefile.am index 5c8e2a6..5637047 100644 --- a/include/osmocom/gsm/protocol/Makefile.am +++ b/include/osmocom/gsm/protocol/Makefile.am @@ -8,6 +8,7 @@ gsm_04_12.h \ gsm_04_14.h \ gsm_04_80.h \ + gsm_06_31.h \ gsm_08_08.h \ gsm_08_58.h \ gsm_09_02.h \ diff --git a/include/osmocom/gsm/protocol/gsm_06_31.h b/include/osmocom/gsm/protocol/gsm_06_31.h new file mode 100644 index 0000000..86e1c21 --- /dev/null +++ b/include/osmocom/gsm/protocol/gsm_06_31.h @@ -0,0 +1,11 @@ +/*! \file gsm_06_31.h + * GSM TS 06.31 definitions, also duplicated in GSM TS 06.81. */ + +#pragma once + +/* Section 6.1.1 */ +enum gsm631_sid_class { + GSM631_SID_CLASS_SPEECH = 0, + GSM631_SID_CLASS_INVALID = 1, + GSM631_SID_CLASS_VALID = 2, +};