bitstream: Properly promote av_reverse values before shifting.

19d824e4 · Alex Converse · Alex Converse · 103278f7 · 19d824e4
Commit 19d824e4 authored Apr 26, 2011 by Alex Converse Committed by Alex Converse Jun 10, 2011
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bitstream.c libavcodec/bitstream.c +4 -4

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--- a/libavcodec/bitstream.c
+++ b/libavcodec/bitstream.c
@@ -116,10 +116,10 @@ static int alloc_table(VLC *vlc, int size, int use_static)
 }
 static av_always_inline uint32_t bitswap_32(uint32_t x) {
-    return av_reverse[x&0xFF]<<24
+    return (uint32_t)av_reverse[x&0xFF]<<24
-         | av_reverse[(x>>8)&0xFF]<<16
+         | (uint32_t)av_reverse[(x>>8)&0xFF]<<16
-         | av_reverse[(x>>16)&0xFF]<<8
+         | (uint32_t)av_reverse[(x>>16)&0xFF]<<8
-         | av_reverse[x>>24];
+         | (uint32_t)av_reverse[x>>24];
 }
 typedef struct {