tree 9a2728d3d95832fa973ec341d874124c8ae30f15
parent 3a5045302f51faf104e64783977f710d36e06e3f
author Philipp Maier <pmaier@sysmocom.de> 1551282505 +0100
committer Philipp Maier <pmaier@sysmocom.de> 1552291711 +0100

gsm0808_utils: fix gsm48 multirate configuration generator

The function gsm0808_sc_cfg_from_gsm48_mr_cfg() takes an S15 to S0
bitmask and converts that bitmask into an AMR multirate configuration
struct.

Unfortunately the current implementation implements 3GPP TS 28.062,
Table 7.11.3.1.3-2 wrongly in some aspects. Lets fix this.

- Fix wrong interpretation of the bitpatterns
- 5,15K is invalid and must never be selected
- Make sure that no more than 4 rates are selected in the active set
- Extend unit-test

Change-Id: I6fd7f4073b84093742c322752f2fd878d1071e15
Related: SYS#4470