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dpx: Make start offset unsigned

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Some corrupted files would end up with a negative offset,
and segfault.

Fixes bug #177.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Derek Buitenhuis 2012-08-04 19:41:20 -04:00
parent 800750417f
commit 965efc1673
1 changed files with 2 additions and 1 deletions
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3
libavcodec/dpx.c
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@ -62,7 +62,8 @@ static int decode_frame(AVCodecContext *avctx,
AVFrame *const p = &s->picture;
uint8_t *ptr;
int magic_num, offset, endian;
unsigned int offset;
int magic_num, endian;
int x, y;
int w, h, stride, bits_per_color, descriptor, elements, target_packet_size, source_packet_size;