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-rw-r--r--libavcodec/xface.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/libavcodec/xface.h b/libavcodec/xface.h
index cd59ba084a..6fbe908b67 100644
--- a/libavcodec/xface.h
+++ b/libavcodec/xface.h
@@ -40,11 +40,12 @@
/*
* Image is encoded as a big integer, using characters from '~' to
- * '!', for a total of 92 symbols. In order to express 48x48=2304
- * bits, we need a total of 354 digits, as given by:
- * ceil(lg_92(2^2304)) = 354
+ * '!', for a total of 94 symbols. In order to express
+ * 48x48*2=8*XFACE_MAX_WORDS=4608
+ * bits, we need a total of 704 digits, as given by:
+ * ceil(lg_94(2^4608)) = 704
*/
-#define XFACE_MAX_DIGITS 354
+#define XFACE_MAX_DIGITS 704
#define XFACE_BITSPERWORD 8
#define XFACE_WORDCARRY (1 << XFACE_BITSPERWORD)