lavfi/drawutils: ensure we don't support formats with non-pixel-sized offsets

3 years ago · f67bd3a825
parent f320722eb5
commit f67bd3a825
1 changed files with 2 additions and 0 deletions
--- a/libavfilter/drawutils.c
+++ b/libavfilter/drawutils.c
@ -114,6 +114,8 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
        depthb = db;
        if (db * (c->offset + 1) > 16)
            return AVERROR(ENOSYS);
+        if (c->offset % db)
+            return AVERROR(ENOSYS);
        /* strange interleaving */
        if (pixelstep[c->plane] != 0 &&
            pixelstep[c->plane] != c->step)