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avcodec/iff: Fix bytestream advance

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Fixes Ticket5585

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-06-12 20:13:36 +02:00
parent bd3fd467fe
commit c3ad63c6a3
1 changed files with 2 additions and 0 deletions
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libavcodec/iff.c
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@ -541,6 +541,8 @@ static int decode_byterun(uint8_t *dst, int dst_size,
if (value >= 0) {
length = FFMIN3(value + 1, dst_size - x, bytestream2_get_bytes_left(gb));
bytestream2_get_buffer(gb, dst + x, length);
if (length < value + 1)
bytestream2_skip(gb, value + 1 - length);
} else if (value > -128) {
length = FFMIN(-value + 1, dst_size - x);
memset(dst + x, bytestream2_get_byte(gb), length);