implement NV_vdpau_interop v7

v2: Actually implement interop between the gallium
    state tracker and the VDPAU backend.

v3: Make it also available in non legacy contexts,
    fix video buffer sharing.

v4: deny interop if we don't have the same screen object

v5: rebased on upstream changes

v6: implemented VDPAUGetSurfaceivNV, improved error handling,
    unregister all surfaces in VDPAUFiniNV

v7: squash merge with Mareks changes

Signed-off-by: Christian König <[email protected]>

4 files changed, 61 insertions, 8 deletions

diff --git a/src/gallium/state_trackers/vdpau/ftab.c b/src/gallium/state_trackers/vdpau/ftab.c
index 81d16ec306a..2c84554cf83 100644
--- a/src/gallium/state_trackers/vdpau/ftab.c
+++ b/src/gallium/state_trackers/vdpau/ftab.c
@@ -26,6 +26,9 @@
  **************************************************************************/
 
 #include <assert.h>
+
+#include "util/u_memory.h"
+
 #include "vdpau_private.h"
 
 static void* ftab[67] =
@@ -104,19 +107,31 @@ static void* ftab_winsys[1] =
    &vlVdpPresentationQueueTargetCreateX11  /* VDP_FUNC_ID_PRESENTATION_QUEUE_TARGET_CREATE_X11 */
 };
 
+static void* ftab_driver[2] =
+{
+   &vlVdpVideoSurfaceGallium, /* VDP_FUNC_ID_SURFACE_GALLIUM */
+   &vlVdpOutputSurfaceGallium /* VDP_FUNC_ID_OUTPUT_SURFACE_GALLIUM */
+};
+
 boolean vlGetFuncFTAB(VdpFuncId function_id, void **func)
 {
    assert(func);
+   *func = NULL;
+
    if (function_id < VDP_FUNC_ID_BASE_WINSYS) {
-      if (function_id > 66)
-         return FALSE;
-      *func = ftab[function_id];
-   }
-   else {
+      if (function_id < Elements(ftab))
+         *func = ftab[function_id];
+
+   } else if (function_id < VDP_FUNC_ID_BASE_DRIVER) {
       function_id -= VDP_FUNC_ID_BASE_WINSYS;
-      if (function_id > 0)
-         return FALSE;
-      *func = ftab_winsys[function_id];
+      if (function_id < Elements(ftab_winsys))
+         *func = ftab_winsys[function_id];
+
+   } else {
+      function_id -= VDP_FUNC_ID_BASE_DRIVER;
+      if (function_id < Elements(ftab_driver))
+         *func = ftab_driver[function_id];
    }
+
    return *func != NULL;
 }
diff --git a/src/gallium/state_trackers/vdpau/output.c b/src/gallium/state_trackers/vdpau/output.c
index cf77b532485..def01c89d2a 100644
--- a/src/gallium/state_trackers/vdpau/output.c
+++ b/src/gallium/state_trackers/vdpau/output.c
@@ -725,3 +725,14 @@ vlVdpOutputSurfaceRenderBitmapSurface(VdpOutputSurface destination_surface,
 
    return VDP_STATUS_OK;
 }
+
+struct pipe_resource *vlVdpOutputSurfaceGallium(VdpOutputSurface surface)
+{
+   vlVdpOutputSurface *vlsurface;
+
+   vlsurface = vlGetDataHTAB(surface);
+   if (!vlsurface || !vlsurface->surface)
+      return NULL;
+
+   return vlsurface->surface->texture;
+}
diff --git a/src/gallium/state_trackers/vdpau/surface.c b/src/gallium/state_trackers/vdpau/surface.c
index 074363bdafb..cd798a21a32 100644
--- a/src/gallium/state_trackers/vdpau/surface.c
+++ b/src/gallium/state_trackers/vdpau/surface.c
@@ -469,3 +469,24 @@ vlVdpVideoSurfaceClear(vlVdpSurface *vlsurf)
    }
    pipe->flush(pipe, NULL, 0);
 }
+
+/**
+ * Interop to mesa state tracker
+ */
+struct pipe_video_buffer *vlVdpVideoSurfaceGallium(VdpVideoSurface surface)
+{
+   vlVdpSurface *p_surf = vlGetDataHTAB(surface);
+   if (!p_surf)
+      return NULL;
+
+   pipe_mutex_lock(p_surf->device->mutex);
+   if (p_surf->video_buffer == NULL) {
+      struct pipe_context *pipe = p_surf->device->context;
+
+      /* try to create a video buffer if we don't already have one */
+      p_surf->video_buffer = pipe->create_video_buffer(pipe, &p_surf->templat);
+   }
+   pipe_mutex_unlock(p_surf->device->mutex);
+
+   return p_surf->video_buffer;
+}
diff --git a/src/gallium/state_trackers/vdpau/vdpau_private.h b/src/gallium/state_trackers/vdpau/vdpau_private.h
index bb91de13103..60196acee6d 100644
--- a/src/gallium/state_trackers/vdpau/vdpau_private.h
+++ b/src/gallium/state_trackers/vdpau/vdpau_private.h
@@ -36,6 +36,8 @@
 #include "pipe/p_compiler.h"
 #include "pipe/p_video_codec.h"
 
+#include "state_tracker/vdpau_interop.h"
+
 #include "util/u_debug.h"
 #include "util/u_rect.h"
 #include "os/os_thread.h"
@@ -498,6 +500,10 @@ VdpVideoMixerGetAttributeValues vlVdpVideoMixerGetAttributeValues;
 VdpVideoMixerDestroy vlVdpVideoMixerDestroy;
 VdpGenerateCSCMatrix vlVdpGenerateCSCMatrix;
 
+/* interop to mesa state tracker */
+VdpVideoSurfaceGallium vlVdpVideoSurfaceGallium;
+VdpOutputSurfaceGallium vlVdpOutputSurfaceGallium;
+
 #define VDPAU_OUT   0
 #define VDPAU_ERR   1
 #define VDPAU_WARN  2