No speed difference, or slightly faster (the difference is too small so it may
be noise
that this appears faster)
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/ffv1.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/libavcodec/ffv1.h b/libavcodec/ffv1.h
index 653138b070..7c29d01f51 100644
--- a/libavcodec/ffv1.h
+++ b/libavcodec/ffv1.h
@@ -153,9 +153,7 @@ static av_always_inline int fold(int diff, int bits)
if (bits == 8)
diff = (int8_t)diff;
else {
- diff += 1 << (bits - 1);
- diff = av_mod_uintp2(diff, bits);
- diff -= 1 << (bits - 1);
+ diff = sign_extend(diff, bits);
}
return diff;
--
2.20.1
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