vdpau: retrieve mixer parameters directly from the hw surface

Always configure the vdpau mixer based on the current surface sent to
it. Before this, we just hardcoded the chroma type, and the surface size
was essentially a guess.

Calling VdpVideoSurfaceGetParameters() on every surface is a bit
suspicious, but it appears it's a cheap function (just requiring some
locks and a table lookup). This way we avoid creating another
complicated mechanism to carry around the actual surface parameters
with a mp_image/AVFrame.

1 files changed, 3 insertions, 1 deletions

diff --git a/video/vdpau_mixer.h b/video/vdpau_mixer.h
index f9a795375e..97bef86d3f 100644
--- a/video/vdpau_mixer.h
+++ b/video/vdpau_mixer.h
@@ -34,7 +34,9 @@ struct mp_vdpau_mixer {
 
     struct mp_image_params image_params;
     struct mp_vdpau_mixer_opts opts;
-    VdpChromaType chroma_type;
+
+    VdpChromaType current_chroma_type;
+    int current_w, current_h;
 
     // set initialized=false to force reinit when changed
     struct mp_csp_equalizer video_eq;