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Fix for overflow in ixheaace_write_audio_preroll_data in encoder #129

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Merged
divya-bm merged 1 commit into from
Jun 8, 2026
Merged

Fix for overflow in ixheaace_write_audio_preroll_data in encoder #129

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6 changes: 4 additions & 2 deletions encoder/drc_src/impd_drc_gain_calculator.c
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Original file line number Diff line number Diff line change
Expand Up @@ -235,14 +235,16 @@ IA_ERRORCODE impd_drc_td_drc_gain_calc_init(ia_drc_gain_enc_struct *pstr_drc_gai
pstr_chan_param = &pstr_drc_compand->str_channel_param;

if (pstr_chan_param->attack < 1.0 / pstr_drc_gain_enc->sample_rate) {
pstr_chan_param->attack = 1.0;
// Decreasing the upper limit of alphaAttack from 1 -> 1 - EPSILON to avoid DRC payload overflow.
pstr_chan_param->attack = 1.0 - FLT_EPSILON;
} else {
pstr_chan_param->attack =
1.0 - exp(-1.0 / (pstr_drc_gain_enc->sample_rate * pstr_chan_param->attack));
}

if (pstr_chan_param->decay < 1.0 / pstr_drc_gain_enc->sample_rate) {
pstr_chan_param->decay = 1.0;
// Decreasing the upper limit of alphaDecay from 1 -> 1 - EPSILON to avoid DRC payload overflow.
pstr_chan_param->decay = 1.0 - FLT_EPSILON;
} else {
pstr_chan_param->decay =
1.0 - exp(-1.0 / (pstr_drc_gain_enc->sample_rate * pstr_chan_param->decay));
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