range == 0 happens with corrupted files
CC:[email protected]
---
libavcodec/lagarithrac.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/lagarithrac.h b/libavcodec/lagarithrac.h
index aa36d38..e4f066e 100644
--- a/libavcodec/lagarithrac.h
+++ b/libavcodec/lagarithrac.h
@@ -107,6 +107,9 @@ static inline uint8_t lag_get_rac(lag_rac *l)
l->range -= range_scaled * l->prob[255];
}
+ if (!l->range)
+ l->range = 0x80;
+
l->low -= range_scaled * l->prob[val];
return val;
--
1.7.10.4
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