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aacenc: Fix ticket #1784: erasure of surround channels

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This was due to a miscomputation of s->cur_channel, which led to
psy-based encoders using the psy coefficients for the wrong channel.
Test sample attached on the bug tracker had the peculiar case of all
other channels being silent, so the error was far more noticeable.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Claudio Freire 2013-05-12 09:38:40 +02:00 • committed by Michael Niedermayer
parent 91f4a44ff4
commit e41cd3cdeb
1 changed files with 2 additions and 2 deletions
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4
libavcodec/aacenc.c
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@ -593,7 +593,7 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
coeffs[ch] = cpe->ch[ch].coeffs;
s->psy.model->analyze(&s->psy, start_ch, coeffs, wi);
for (ch = 0; ch < chans; ch++) {
s->cur_channel = start_ch * 2 + ch;
s->cur_channel = start_ch + ch;
s->coder->search_for_quantizers(avctx, s, &cpe->ch[ch], s->lambda);
}
cpe->common_window = 0;
@ -609,7 +609,7 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
}
}
}
s->cur_channel = start_ch * 2;
s->cur_channel = start_ch;
if (s->options.stereo_mode && cpe->common_window) {
if (s->options.stereo_mode > 0) {
IndividualChannelStream *ics = &cpe->ch[0].ics;