aacdec_usac: zero out alpha values for the current frame

8 months ago · 714596bcbf
parent c2d459cb51
commit 714596bcbf
1 changed files with 4 additions and 0 deletions
--- a/libavcodec/aac/aacdec_usac.c
+++ b/libavcodec/aac/aacdec_usac.c
@ -691,6 +691,10 @@ static int decode_usac_stereo_cplx(AACDecContext *ac, AACUsacStereo *us,
    if (!indep_flag)
        delta_code_time = get_bits1(gb);

+    /* Alpha values must be zeroed out if pred_used is 0. */
+    memset(us->alpha_q_re, 0, sizeof(us->alpha_q_re));
+    memset(us->alpha_q_im, 0, sizeof(us->alpha_q_im));
+
    /* TODO: shouldn't be needed */
    for (int g = 0; g < num_window_groups; g++) {
        for (int sfb = 0; sfb < cpe->max_sfb_ste; sfb += SFB_PER_PRED_BAND) {