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

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;