Assertion in gain_enc_mless_ivas_fx in BASOP encoder for MASA LTV input with DTX enabled

Basic info

• Fixed point:
  • Encoder (fixed): 00e3a39d
  • Decoder (fixed): 00e3a39d

Bug description

There is an assert in BASOP encoder with LTV input vectors for MASA in frame 1732. The stack trace is following:

Ways to reproduce

Use the following command-line

IVAS_cod -masa 2 ltv48_MASA2TC.met -max_band swb -dtx 24400 32 ltv32_MASA2TC.wav test_0190.bs

For some reason, this assert was not hit on the encoder side when running our test set but another assert happened on the decoder side. If this happens with your setup, then the decoder command-line was

IVAS_dec EXT 48 test_0190.bs 0190_ltv32_MASA2TC.wav_24k4_32-48___EXT.wav