---
libavcodec/dfa.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/libavcodec/dfa.c b/libavcodec/dfa.c
index 1023197..b149791 100644
--- a/libavcodec/dfa.c
+++ b/libavcodec/dfa.c
@@ -81,7 +81,7 @@ static int decode_tsw1(uint8_t *frame, int width, int height,
v = bytestream_get_le16(&src);
offset = (v & 0x1FFF) << 1;
count = ((v >> 13) + 2) << 1;
- if (frame - offset < frame_start || frame_end - frame < count)
+ if (frame - frame_start < offset || frame_end - frame < count)
return -1;
av_memcpy_backptr(frame, offset, count);
frame += count;
@@ -117,7 +117,7 @@ static int decode_dsw1(uint8_t *frame, int width, int
height,
v = bytestream_get_le16(&src);
offset = (v & 0x1FFF) << 1;
count = ((v >> 13) + 2) << 1;
- if (frame - offset < frame_start || frame_end - frame < count)
+ if (frame - frame_start < offset || frame_end - frame < count)
return -1;
// can't use av_memcpy_backptr() since it can overwrite following
pixels
for (v = 0; v < count; v++)
@@ -157,7 +157,7 @@ static int decode_dds1(uint8_t *frame, int width, int
height,
v = bytestream_get_le16(&src);
offset = (v & 0x1FFF) << 2;
count = ((v >> 13) + 2) << 1;
- if (frame - offset < frame_start || frame_end - frame < count*2 +
width)
+ if (frame - frame_start < offset || frame_end - frame < count*2 +
width)
return -1;
for (i = 0; i < count; i++) {
frame[0] = frame[1] =
--
1.7.2.1
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