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avformat/siff: Fix checks and variable types 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-03-09 21:05:29 +01:00
parent 8f92c0898d
commit e71dce5769
1 changed files with 4 additions and 3 deletions
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7
libavformat/siff.c
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@ -56,7 +56,7 @@ typedef struct SIFFContext {
int curstrm;
unsigned int pktsize;
int gmcsize;
int sndsize;
unsigned int sndsize;
unsigned int flags;
uint8_t gmc[4];
@ -208,10 +208,11 @@ static int siff_read_packet(AVFormatContext *s, AVPacket *pkt)
}
if (!c->curstrm) {
if (c->pktsize < 2LL + c->sndsize + c->gmcsize)
return AVERROR_INVALIDDATA;
size = c->pktsize - c->sndsize - c->gmcsize - 2;
size = ffio_limit(s->pb, size);
if (size < 0 || c->pktsize < c->sndsize)
return AVERROR_INVALIDDATA;
if (av_new_packet(pkt, size + c->gmcsize + 2) < 0)
return AVERROR(ENOMEM);
AV_WL16(pkt->data, c->flags);