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dca: Respect the current limits in the downmixing capabilities

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-07-10 19:00:15 +02:00
parent f261e50845
commit 3802833bc1
1 changed files with 6 additions and 0 deletions
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6
libavcodec/dcadec.c
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@ -807,6 +807,12 @@ static int dca_subframe_header(DCAContext *s, int base_channel, int block_index)
"Invalid channel mode %d\n", am);
return AVERROR_INVALIDDATA;
}
if (s->prim_channels > FF_ARRAY_ELEMS(dca_default_coeffs[0])) {
avpriv_request_sample(s->avctx, "Downmixing %d channels",
s->prim_channels);
return AVERROR_PATCHWELCOME;
}
for (j = base_channel; j < s->prim_channels; j++) {
s->downmix_coef[j][0] = dca_default_coeffs[am][j][0];
s->downmix_coef[j][1] = dca_default_coeffs[am][j][1];