shithub: dav1d

Info  •  Files  •  Log  •  Branches

Fix negative shift exponent in get_poc_diff

As indicated in the spec, get_poc_diff should return 0 when
order_hints are disabled.

Closes #77

--- a/src/env.h

+++ b/src/env.h

@@ -293,6 +293,7 @@

 static inline int get_poc_diff(const int order_hint_n_bits,

                                const int poc0, const int poc1)

 {

+    if (!order_hint_n_bits) return 0;

     const int mask = 1 << (order_hint_n_bits - 1);

     const int diff = poc0 - poc1;

     return (diff & (mask - 1)) - (diff & mask);