tta: better check for totalframes.
Avoids crash, Fixes Ticket 690 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -72,8 +72,8 @@ static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
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c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
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c->currentframe = 0;
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if(c->totalframes >= UINT_MAX/sizeof(uint32_t)){
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av_log(s, AV_LOG_ERROR, "totalframes too large\n");
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if(c->totalframes >= UINT_MAX/sizeof(uint32_t) || c->totalframes <= 0){
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av_log(s, AV_LOG_ERROR, "totalframes %d invalid\n", c->totalframes);
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return -1;
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}
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