video: have a generic context struct for hwdec backends

Before this commit, each hw backend had their own specific struct types
for context, and some, like VDA, had none at all. Add a context struct
(mp_hwdec_ctx) that provides a somewhat generic way to pass the hwdec
context around. Some things get slightly better, some slightly more
verbose.

mp_hwdec_info is still around; it's still needed, but is reduced to its
role of handling delayed loading of the hwdec backend.

1 files changed, 1 insertions, 1 deletions

diff --git a/video/out/vo_vdpau.c b/video/out/vo_vdpau.c
index 640e16e1a8..a022946c1b 100644
--- a/video/out/vo_vdpau.c
+++ b/video/out/vo_vdpau.c
@@ -988,7 +988,7 @@ static int preinit(struct vo *vo)
         return -1;
     }
 
-    vc->hwdec_info.vdpau_ctx = vc->mpvdp;
+    vc->hwdec_info.hwctx = &vc->mpvdp->hwctx;
 
     vc->video_mixer = mp_vdpau_mixer_create(vc->mpvdp, vo->log);