Resolve "Decoder format switching for G.192 bitstreams"
Reason why this change is needed
- As agreed in meetings, G.192 bitstreams should also support format switching within IVAS
Description of the change
- Bring back changes removed in commit 6a15d338 and adapt them to current code. Probably something more is needed.
Affected operating points
- Decoder only. In non-VOIP operation, this should allow format switching within IVAS.
Related to #1539