vo_drm: allow changing video rectangle settings

Now among other things panscan can be changed during playback.

Unfortunately, it flickers. The issue is that reconfig() clears the
framebuffer. Removing the clearing shows that the "unused" parts of
the picture are not cleared - even though OSD could render there. As
such, this is a separate issue.

(cherry picked from commit 56310605690288f44c49363413e68f7c73325ed1)

1 files changed, 6 insertions, 0 deletions

diff --git a/video/out/vo_drm.c b/video/out/vo_drm.c
index b8f6e1cffe..9ef371eb0d 100644
--- a/video/out/vo_drm.c
+++ b/video/out/vo_drm.c
@@ -618,6 +618,12 @@ static int control(struct vo *vo, uint32_t request, void *data)
     case VOCTRL_REDRAW_FRAME:
         draw_image(vo, p->last_input);
         return VO_TRUE;
+    case VOCTRL_GET_PANSCAN:
+        return VO_TRUE;
+    case VOCTRL_SET_PANSCAN:
+        if (vo->config_ok)
+            reconfig(vo, vo->params, 0);
+        return VO_TRUE;
     }
     return VO_NOTIMPL;
 }