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AAC encoder: fix possible assertion failure in PNS

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Fix possible SF delta violation that would cause an
eventual assertion failure in some corner cases (esp
on very low bitrates) when marking bands for PNS due
to misuse of the sf_delta utilities
This commit is contained in:
Claudio Freire 2015-12-22 05:26:12 -03:00
parent c0f67e1123
commit 4720a562c8
1 changed files with 3 additions and 2 deletions
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5
libavcodec/aaccoder.c
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@ -726,9 +726,10 @@ static void search_for_pns(AACEncContext *s, AVCodecContext *avctx, SingleChanne
sce->band_type[w*16+g] = NOISE_BT; sce->band_type[w*16+g] = NOISE_BT;
sce->zeroes[w*16+g] = 0; sce->zeroes[w*16+g] = 0;
prev = noise_sfi; prev = noise_sfi;
} else {
if (!sce->zeroes[w*16+g])
prev_sf = sce->sf_idx[w*16+g];
} }
if (!sce->zeroes[w*16+g])
prev_sf = sce->sf_idx[w*16+g];
} }
} }
} }