diff options
Diffstat (limited to 'libavcodec')
-rw-r--r-- | 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] = |