gl_video: use hwdec download_image call only if hwdec is active

The hwdec driver can be loaded, even if it's not used (e.g. when playing
a file with no hardware decoding after one with it enabled).

Also, check whether dlimage is NULL. Since this will do call into the
native hwdec API, there's a chance a driver could fail doing this, it's
better to check the return value, even if this case currently can't
happen.

1 files changed, 3 insertions, 2 deletions

diff --git a/video/out/gl_video.c b/video/out/gl_video.c
index 27c3339997..2660dacf7a 100644
--- a/video/out/gl_video.c
+++ b/video/out/gl_video.c
@@ -1699,9 +1699,10 @@ struct mp_image *gl_video_download_image(struct gl_video *p)
     if (!p->have_image)
         return NULL;
 
-    if (p->hwdec && p->hwdec->driver->download_image) {
+    if (p->hwdec_active && p->hwdec->driver->download_image) {
         struct mp_image *dlimage = p->hwdec->driver->download_image(p->hwdec);
-        mp_image_set_attributes(dlimage, &p->image_params);
+        if (dlimage)
+            mp_image_set_attributes(dlimage, &p->image_params);
         return dlimage;
     }