auxiliary/vl: use vl_*_screen_create stubs when building w/o platform

Provide a dummy stub when the user has opted w/o said platform, thus
we can build the binaries without unnecessarily requiring X11/other
headers.

In order to avoid build and link-time issues, we remove the HAVE_DRI3
guards in the VA and VDPAU state-trackers.

With this change st/va will return VA_STATUS_ERROR_ALLOCATION_FAILED
instead of VA_STATUS_ERROR_UNIMPLEMENTED. That is fine since upstream
users of libva such as vlc and mpv do little error checking, let
alone distinguish between the two.

Cc: Leo Liu <[email protected]>
Cc: Guttula, Suresh <[email protected]>
Cc: [email protected]
Cc: Christian König <[email protected]>
Signed-off-by: Emil Velikov <[email protected]>

1 files changed, 18 insertions, 3 deletions

diff --git a/src/gallium/auxiliary/vl/vl_winsys.h b/src/gallium/auxiliary/vl/vl_winsys.h
index e1f9b274fcc..77277cefe8b 100644
--- a/src/gallium/auxiliary/vl/vl_winsys.h
+++ b/src/gallium/auxiliary/vl/vl_winsys.h
@@ -32,7 +32,9 @@
 #ifndef vl_winsys_h
 #define vl_winsys_h
 
+#ifdef HAVE_X11_PLATFORM
 #include <X11/Xlib.h>
+#endif
 #include "pipe/p_defines.h"
 #include "pipe/p_format.h"
 
@@ -68,15 +70,28 @@ struct vl_screen
    struct pipe_loader_device *dev;
 };
 
+#ifdef HAVE_X11_PLATFORM
 struct vl_screen *
 vl_dri2_screen_create(Display *display, int screen);
+#else
+static inline struct vl_screen *
+vl_dri2_screen_create(void *display, int screen) { return NULL; };
+#endif
 
+#if defined(HAVE_X11_PLATFORM) && defined(HAVE_DRI3)
 struct vl_screen *
-vl_drm_screen_create(int fd);
+vl_dri3_screen_create(Display *display, int screen);
+#else
+static inline struct vl_screen *
+vl_dri3_screen_create(void *display, int screen) { return NULL; };
+#endif
 
-#if defined(HAVE_DRI3)
+#ifdef HAVE_DRM_PLATFORM
 struct vl_screen *
-vl_dri3_screen_create(Display *display, int screen);
+vl_drm_screen_create(int fd);
+#else
+static inline struct vl_screen *
+vl_drm_screen_create(int fd) { return NULL; };
 #endif
 
 #endif