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aacenc_pred: disable PNS SFBs and disable right predictors with IS

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Since PNS generates coefficients it doesn't make sense to send
the predicted ones as well. Also the specifications explicitly
state to disable right channel IS predictors.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2015-09-06 15:10:28 +01:00
parent a71f7de95b
commit 8848c8440e
1 changed files with 3 additions and 1 deletions
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4
libavcodec/aacenc_pred.c
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@ -262,7 +262,9 @@ void ff_aac_search_for_pred(AACEncContext *s, SingleChannelElement *sce)
const int num_coeffs = sce->ics.swb_offset[sfb + 1] - start_coef;
const FFPsyBand *band = &s->psy.ch[s->cur_channel].psy_bands[sfb];
if (start_coef + num_coeffs > MAX_PREDICTORS)
if (start_coef + num_coeffs > MAX_PREDICTORS ||
(s->cur_channel && sce->band_type[sfb] >= INTENSITY_BT2) ||
sce->band_type[sfb] == NOISE_BT)
continue;
/* Normal coefficients */