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qtpalette: make the color_* variables unsigned again 

This fixes segmentation faults due to out of bounds writes, when
color_start is interpreted as negative number.

This regression was introduced in commit 57631f.

Reviewed-by: Mats Peterson <matsp888@yahoo.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2016-01-10 10:53:33 +01:00
parent 59c915a403
commit 63c9b30f98
1 changed files with 1 additions and 1 deletions
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libavformat/qtpalette.c
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@ -48,7 +48,7 @@ int ff_get_qtpalette(int codec_id, AVIOContext *pb, uint32_t *palette)
/* If the depth is 1, 2, 4, or 8 bpp, file is palettized. */
if ((bit_depth == 1 || bit_depth == 2 || bit_depth == 4 || bit_depth == 8)) {
int color_count, color_start, color_end;
uint32_t color_count, color_start, color_end;
uint32_t a, r, g, b;
/* Ignore the greyscale bit for 1-bit video and sample