noise_bsf: fix division by 0

Fixes CID733737
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-14 21:45:42 +02:00
parent c73b1a1d80
commit 93ef29b6f4

View File

@ -32,6 +32,9 @@ static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const ch
int amount= args ? atoi(args) : (*state % 10001+1);
int i;
if(amount <= 0)
return AVERROR(EINVAL);
*poutbuf= av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
memcpy(*poutbuf, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);