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cngdec: Update the LPC coefficients after averaging the reflection coefficients 

I somehow messed up the placement of this one.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-10-30 12:26:39 +02:00
parent d16c4aebba
commit 9b50d20cd2
1 changed files with 1 additions and 1 deletions
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libavcodec/cngdec.c
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@ -112,12 +112,12 @@ static int cng_decode_frame(AVCodecContext *avctx, void *data,
for (i = 0; i < FFMIN(avpkt->size - 1, p->order); i++) { for (i = 0; i < FFMIN(avpkt->size - 1, p->order); i++) {
p->target_refl_coef[i] = (avpkt->data[1 + i] - 127) / 128.0; p->target_refl_coef[i] = (avpkt->data[1 + i] - 127) / 128.0;
} }
make_lpc_coefs(p->lpc_coef, p->refl_coef, p->order);
} }
p->energy = p->energy / 2 + p->target_energy / 2; p->energy = p->energy / 2 + p->target_energy / 2;
for (i = 0; i < p->order; i++) for (i = 0; i < p->order; i++)
p->refl_coef[i] = 0.6 *p->refl_coef[i] + 0.4 * p->target_refl_coef[i]; p->refl_coef[i] = 0.6 *p->refl_coef[i] + 0.4 * p->target_refl_coef[i];
make_lpc_coefs(p->lpc_coef, p->refl_coef, p->order);
for (i = 0; i < p->order; i++) for (i = 0; i < p->order; i++)
e *= 1.0 - p->refl_coef[i]*p->refl_coef[i]; e *= 1.0 - p->refl_coef[i]*p->refl_coef[i];