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Author SHA1 Message Date
Harald Welte 5785a4a8fc codec: Add functions for AMR s->d bits and d->s bits 
These functions implement re-ordering of bits as per TS 06.90 / 26.101
based on the already existing tables we've had in libosmocoding.

Change-Id: Ia4ac2aea2e96f9185f082a07ca64dfc5276efb46
 2020-05-14 14:51:22 +02:00
Harald Welte e08da97570 Fix/Update copyright notices; Add SPDX annotation 
Let's fix some erroneous/accidential references to wrong license,
update copyright information where applicable and introduce a
SPDX-License-Identifier to all files.

Change-Id: I39af26c6aaaf5c926966391f6565fc5936be21af
 2017-11-13 01:35:12 +09:00
Harald Welte 3851e8ea7a introduce proper test case for GSM FR detection 
our code is actually wrong, so let's skip the test until the fix is
applied in a follow-up patch.

Change-Id: I710c7871f959671deb3d18ab9062588f3056fd7c
 2017-06-09 08:10:03 +00:00
Max e9e5f8e4e9 Add null-pointer check to osmo_amr_rtp_dec() 
Check that RTP payload we're about to decode is not NULL and return
proper error code instead of segfaulting. Add corresponding test case.

Change-Id: Ib6cda9900a41ed16bbfbde9df3de9d38e0a7469b
 2016-11-07 15:19:47 +01:00
Max ec8f192fec Add functions to detect HR/FR SID frames 
Add functions which check if given FR or HR frame (packed in RTP)
contains SID (SIlence Descriptor) and corresponding tests.

Related: OS#22
Change-Id: I4051e3c0d4fb9ee93d7e9e0ef4abaf9f18e227ca
Reviewed-on: https://gerrit.osmocom.org/160
Tested-by: Jenkins Builder
Reviewed-by: Harald Welte <laforge@gnumonks.org>
 2016-06-01 10:44:06 +00:00
Max 92db150488 Add helper functions for AMR codec 
* add functions to encode/decode various codec paramters from RTP payload with
  AMR frame according to RFC 4867
* those functions are extended version based on code from osmo-bts'
  amr.c by Andreas Eversberg
* add corresponding enum types and strings for logging
* add regression tests

It's useful both to replace manual parsing in osmo-bts with fuctions
covered by test suite and as a debugging helpers for issues related to
AMR.

Change-Id: Ia217679a07d3fbc970f435e20f6eac33d34bd597
Related: OS#1562
Reviewed-on: https://gerrit.osmocom.org/118
Tested-by: Jenkins Builder
Reviewed-by: Holger Freyther <holger@freyther.de>
 2016-05-31 10:11:51 +00:00