[FFmpeg-cvslog] avformat/aiffenc: Simplify padding tag

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Thu Mar 14 01:31:06 2024 +0100| [0230792bc81d4b7d11600a8d38fdda516ec5baf4] | committer: Andreas Rheinhardt

avformat/aiffenc: Simplify padding tag

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0230792bc81d4b7d11600a8d38fdda516ec5baf4
---

 libavformat/aiffenc.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/libavformat/aiffenc.c b/libavformat/aiffenc.c
index 11a5b18d57..37aca41847 100644
--- a/libavformat/aiffenc.c
+++ b/libavformat/aiffenc.c
@@ -87,13 +87,15 @@ static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
     AVIOContext *pb = s->pb;
 
     if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
-        int size = strlen(tag->value);
+        size_t size = strlen(tag->value);
+
+        // AIFF tags are zero-padded to an even length.
+        // So simply copy the terminating \0 if the length is odd.
+        size = FFALIGN(size, 2);
 
         avio_wl32(pb, id);
-        avio_wb32(pb, FFALIGN(size, 2));
+        avio_wb32(pb, size);
         avio_write(pb, tag->value, size);
-        if (size & 1)
-            avio_w8(pb, 0);
     }
 }