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dca: dont overread dca_default_coeffs.

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-02-29 21:14:17 +01:00
parent 51db9a97e9
commit d7bce4a274
1 changed files with 4 additions and 0 deletions
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4
libavcodec/dca.c
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@ -801,10 +801,14 @@ static int dca_subframe_header(DCAContext *s, int base_channel, int block_index)
} }
} else { } else {
int am = s->amode & DCA_CHANNEL_MASK; int am = s->amode & DCA_CHANNEL_MASK;
if (am < 16) {
for (j = base_channel; j < s->prim_channels; j++) { for (j = base_channel; j < s->prim_channels; j++) {
s->downmix_coef[j][0] = dca_default_coeffs[am][j][0]; s->downmix_coef[j][0] = dca_default_coeffs[am][j][0];
s->downmix_coef[j][1] = dca_default_coeffs[am][j][1]; s->downmix_coef[j][1] = dca_default_coeffs[am][j][1];
} }
} else {
av_log(s->avctx, AV_LOG_WARNING, "amode > 15 default downmix_coef unsupported\n");
}
} }
} }