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| author | Charlie Monroe <charlie@charliemonroe.net> | 2021-12-10 11:20:18 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-12-11 17:15:38 +0100 |
| commit | 34aee50a7f5a4b36f9f7daf827422d345c7868ed (patch) | |
| tree | 181849407dfd47d484593c0a21bfd804cf2e6936 | |
| parent | 41b077762cda61a6975dabee9f58444815794619 (diff) | |
| download | ffmpeg-34aee50a7f5a4b36f9f7daf827422d345c7868ed.tar.gz | |
avcodec/movtextenc: Check for existence of font name before using it
Fixes crashes if the font name is NULL (which it is if a \fn tag
is not followed by a font name).
Signed-off-by: Charlie Monroe <charlie@charliemonroe.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
| -rw-r--r-- | libavcodec/movtextenc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/movtextenc.c b/libavcodec/movtextenc.c index 5869942ec0..221cd76fea 100644 --- a/libavcodec/movtextenc.c +++ b/libavcodec/movtextenc.c @@ -494,8 +494,10 @@ static void mov_text_alpha_cb(void *priv, int alpha, int alpha_id) static uint16_t find_font_id(MovTextContext *s, const char *name) { - int i; - for (i = 0; i < s->font_count; i++) { + if (!name) + return 1; + + for (int i = 0; i < s->font_count; i++) { if (!strcmp(name, s->fonts[i])) return i + 1; } |