Every code point in the BMP is representable with at most three bytes
in UTF-8 and every code point not in the BMP takes four bytes.
For each of the latter, the encoding of UTF-16 takes as many
bytes; for each of the former, it takes at most 3/2 as many.
Therefore one can decrease the size of the buffer allocated
here.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
libavformat/wtvdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c
index 4ce4b6403e..9fe00590c8 100644
--- a/libavformat/wtvdec.c
+++ b/libavformat/wtvdec.c
@@ -468,7 +468,7 @@ static void get_tag(AVFormatContext *s, AVIOContext *pb,
const char *key, int ty
return;
}
- buf_size = FFMIN(FFMAX(2U * length, LEN_PRETTY_GUID) + 1, INT_MAX);
+ buf_size = FFMIN(FFMAX(length + length / 2U, LEN_PRETTY_GUID) + 1,
INT_MAX);
buf = av_malloc(buf_size);
if (!buf)
return;
--
2.34.1
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