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aacenc: psy_3gpp_init(): Fix ath for the first line in each sfb.

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Fix the MDCT line to frequency calculation for the first line in each sfb.
Use this value to calculate ATH.

Originally committed as revision 24231 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Converse 2010-07-14 04:10:41 +00:00
parent 886385afd6
commit d7194e3b73
1 changed files with 1 additions and 1 deletions
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2
libavcodec/aacpsy.c
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@ -138,7 +138,7 @@ static av_cold int psy_3gpp_init(FFPsyContext *ctx) {
}
start = 0;
for (g = 0; g < ctx->num_bands[j]; g++) {
minscale = ath(ctx->avctx->sample_rate * start / 1024.0, ATH_ADD);
minscale = ath(ctx->avctx->sample_rate * start / 1024.0 / 2.0, ATH_ADD);
for (i = 1; i < ctx->bands[j][g]; i++)
minscale = FFMIN(minscale, ath(ctx->avctx->sample_rate * (start + i) / 1024.0 / 2.0, ATH_ADD));
coeffs->ath[g] = minscale - minath;