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wma: Lower the maximum number of channels to 2

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ff_wma_init is used only by wmadec and wmaenc, and neither of them
can handle more than 2 channels.

This fixes crashes with invalid files.

Based on patch by Piotr Bandurski and Michael Niedermayer.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-06-30 21:30:28 +03:00
parent 889c1ec4cc
commit 710bd8a33e
1 changed files with 1 additions and 1 deletions
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2
libavcodec/wma.c
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@ -78,7 +78,7 @@ int ff_wma_init(AVCodecContext *avctx, int flags2)
int coef_vlc_table; int coef_vlc_table;
if ( avctx->sample_rate <= 0 || avctx->sample_rate > 50000 if ( avctx->sample_rate <= 0 || avctx->sample_rate > 50000
|| avctx->channels <= 0 || avctx->channels > 8 || avctx->channels <= 0 || avctx->channels > 2
|| avctx->bit_rate <= 0) || avctx->bit_rate <= 0)
return -1; return -1;