avio: fix fourcc if any character is >=0x80.

Fixes issue 2638. (cherry picked from commit fd085bc0)

avio: fix fourcc if any character is >=0x80.
Fixes issue 2638. (cherry picked from commit fd085bc0)
a960576f · Ronald S. Bultje · Michael Niedermayer · 7f1b1f3d · a960576f
Commit a960576f authored Mar 04, 2011 by Ronald S. Bultje Committed by Michael Niedermayer Mar 05, 2011
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avio_internal.h libavformat/avio_internal.h +4 -1

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--- a/libavformat/avio_internal.h
+++ b/libavformat/avio_internal.h
@@ -42,6 +42,9 @@ int ffio_read_partial(AVIOContext *s, unsigned char *buf, int size);

 void ffio_fill(AVIOContext *s, int b, int count);

-#define ffio_wfourcc(pb, str) avio_wl32(pb, MKTAG((str)[0], (str)[1], (str)[2], (str)[3]))
+static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
+{
+    avio_wl32(pb, MKTAG(s[0], s[1], s[2], s[3]));
+}

 #endif // AVFORMAT_AVIO_INTERNAL_H