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aacenc: Fix psy logic.

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Set band info before determining scalefactors. Use the look ahead for
windowing decision.

Originally committed as revision 23132 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Converse 2010-05-14 16:49:11 +00:00
parent eb0a4d3222
commit 31184aac87
2 changed files with 2 additions and 2 deletions
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2
libavcodec/aacenc.c
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@ -562,6 +562,7 @@ static int aac_encode_frame(AVCodecContext *avctx,
cpe = &s->cpe[i];
for (j = 0; j < chans; j++) {
s->cur_channel = start_ch + j;
ff_psy_set_band_info(&s->psy, s->cur_channel, cpe->ch[j].coeffs, &wi[j]);
s->coder->search_for_quantizers(avctx, s, &cpe->ch[j], s->lambda);
}
cpe->common_window = 0;
@ -592,7 +593,6 @@ static int aac_encode_frame(AVCodecContext *avctx,
}
for (j = 0; j < chans; j++) {
s->cur_channel = start_ch + j;
ff_psy_set_band_info(&s->psy, s->cur_channel, cpe->ch[j].coeffs, &wi[j]);
encode_individual_channel(avctx, s, &cpe->ch[j], cpe->common_window);
}
start_ch += chans;

2
libavcodec/aacpsy.c
View File

@ -195,7 +195,7 @@ static FFPsyWindowInfo psy_3gpp_window(FFPsyContext *ctx,
int attack_n = 0;
for (i = 0; i < 8; i++) {
for (j = 0; j < 128; j++) {
v = iir_filter(audio[(i*128+j)*ctx->avctx->channels], pch->iir_state);
v = iir_filter(la[(i*128+j)*ctx->avctx->channels], pch->iir_state);
sum += v*v;
}
s[i] = sum;