Assert in BASOP decoder function ivas_dirac_dec_render_sf_fx for LTV MASA bitstream

Basic info

  • Float reference:
    • Encoder (float): e15ad0ad
  • Fixed point:
    • Encoder (fixed): 54186be9
    • Decoder (fixed): 54186be9

Bug description

There is an assert in frame 372 in BASOP decoder when fed with bitstream from BASOP or float encoder using the given command line.

Screenshot_2025-03-07_at_14.33.51

Ways to reproduce

Use the following command lines with the rate switching pattern generic_start_384k_20frames.bin

IVAS_cod -no_delay_cmp -masa 2 ltv48_MASA2TC.met -max_band fb -dtx generic_start_384k_20frames.bin 48 ltv48_MASA2TC.wav test_0477.bs
IVAS_dec -no_delay_cmp 7_1_4 16 test_0477.bs 0477_ltv48_MASA2TC.wav_generic_start_384k_20frames_48-16___7_1_4-no_delay_cmp.wav
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