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Simplify conversion to 5-bit ASCII.
author
Reimar Döffinger
<Reimar.Doeffinger@gmx.de>
Sat, 30 Jan 2010 21:50:47 +0000
(21:50 +0000)
committer
Reimar Döffinger
<Reimar.Doeffinger@gmx.de>
Sat, 30 Jan 2010 21:50:47 +0000
(21:50 +0000)
Originally committed as revision 21557 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavformat/isom.c
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diff --git
a/libavformat/isom.c
b/libavformat/isom.c
index
9318fac
..
e54a5c9
100644
(file)
--- a/
libavformat/isom.c
+++ b/
libavformat/isom.c
@@
-283,13
+283,12
@@
int ff_mov_iso639_to_lang(const char *lang, int mp4)
lang = "und";
/* 5bit ascii */
for (i = 0; i < 3; i++) {
- unsigned char c = (unsigned char)lang[i];
- if (c < 0x60)
- return -1;
- if (c > 0x60 + 0x1f)
+ uint8_t c = lang[i];
+ c -= 0x60;
+ if (c > 0x1f)
return -1;
code <<= 5;
- code |=
(c - 0x60)
;
+ code |=
c
;
}
return code;
}