SBA decoder error with DTX at 80kbps SWB

Basic info

• Commit SHA: main, tested at 34c6b03f
• Platform: all

Bug description

Decoder halts with an error when decoding one of the soon-to-come longer testvectors:

Internal fatal error: Error, illegal bitrate (11400) in the  G.192 frame ! Exiting ! 


In function: read_indices(), lib_com/bitstream.c:2057


Error: could not feed frame to decoder: internal error

Happens in all output formats.

Ways to reproduce

Get longer testvectors from the testfile repo:

git clone git@forge.3gpp.org:ivas-codec-pc/ivas-pc-testfiles.git

Run either

python3 ./scripts/runIvasCodec.py -p ~/your-config.json -m SBA_b80_dtx_swb_cbr -I ivas-pc-testfiles/testv/ltv48_HOA3.wav

or resample the file to 32kHz yourself and do

IVAS_cod -sba 3 -dtx -max_band swb 80000 32 ltv48_HOA3_32_SBA.pcm bs.192
IVAS_dec mono 32 bs.192 out.wav