add clCreateBufferFromLibvaIntel() api

We can pass in libva's buffer object name and then create the cl buffer from
it, thus we can share the buffer between libva and our opencl.

Signed-off-by: Lu Guanqun <guanqun.lu@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/intel/intel_driver.c b/src/intel/intel_driver.c
index cc339144..dc194fe0 100644
--- a/src/intel/intel_driver.c
+++ b/src/intel/intel_driver.c
@@ -583,6 +583,20 @@ intel_release_buffer_from_texture(cl_context ctx, unsigned int target,
 }
 #endif
 
+cl_buffer intel_share_buffer_from_libva(cl_context ctx,
+                                        unsigned int bo_name,
+                                        size_t *sz)
+{
+  drm_intel_bo *intel_bo;
+
+  intel_bo = intel_driver_share_buffer((intel_driver_t *)ctx->drv, "shared from libva", bo_name);
+
+  if (sz)
+    *sz = intel_bo->size;
+
+  return (cl_buffer)intel_bo;
+}
+
 static int32_t get_intel_tiling(cl_int tiling, uint32_t *intel_tiling)
 {
   switch (tiling) {
@@ -630,6 +644,7 @@ intel_setup_callbacks(void)
   cl_buffer_release_from_texture = (cl_buffer_release_from_texture_cb *) intel_release_buffer_from_texture;
   intel_set_cl_gl_callbacks();
 #endif
+  cl_buffer_get_buffer_from_libva = (cl_buffer_get_buffer_from_libva_cb *) intel_share_buffer_from_libva;
   cl_buffer_reference = (cl_buffer_reference_cb *) drm_intel_bo_reference;
   cl_buffer_unreference = (cl_buffer_unreference_cb *) drm_intel_bo_unreference;
   cl_buffer_map = (cl_buffer_map_cb *) drm_intel_bo_map;