[Libva] [PATCH 16/16] add vaGetImageBufferWl

[Zhao Halley]

From: Zhao halley <halley.zhao at intel.com>

---
 va/wayland/va_backend_wayland.h |   11 +++++++++--
 va/wayland/va_wayland.c         |   18 ++++++++++++++++++
 va/wayland/va_wayland.h         |   30 +++++++++++++++++++++++++++---
 3 files changed, 54 insertions(+), 5 deletions(-)

diff --git a/va/wayland/va_backend_wayland.h b/va/wayland/va_backend_wayland.h
index 0f076c7..e652c70 100755
--- a/va/wayland/va_backend_wayland.h
+++ b/va/wayland/va_backend_wayland.h
@@ -41,9 +41,16 @@ struct VADriverVTableWayland {
     
     /* Get wl_buffer from VASurface*/
     VAStatus (*vaGetSurfaceBufferWl)(
-        struct VADriverContext *ctx,
+        struct VADriverContext  *ctx,
         VASurfaceID             va_surface,
-        struct wl_buffer **out_buffer
+        struct wl_buffer        **out_buffer
+    );
+
+    /* Get wl_buffer from VAImageID*/
+    VAStatus (*vaGetImageBufferWl)(
+        struct VADriverContext  *ctx,
+        VAImageID               va_image,
+        struct wl_buffer        **out_buffer
     );
 };
 
diff --git a/va/wayland/va_wayland.c b/va/wayland/va_wayland.c
index a9ebc1e..7559c1b 100755
--- a/va/wayland/va_wayland.c
+++ b/va/wayland/va_wayland.c
@@ -173,3 +173,21 @@ vaGetSurfaceBufferWl(
     return ctx->vtable_wayland->vaGetSurfaceBufferWl(ctx, 
                                     va_surface, out_buffer);
 }
+
+VAStatus
+vaGetImageBufferWl(
+    VADisplay    dpy,
+    VAImageID  va_image,
+    struct wl_buffer **out_buffer
+)
+{
+    VADriverContextP const ctx = get_driver_context(dpy);
+
+    if (!ctx)
+        return VA_STATUS_ERROR_INVALID_DISPLAY;
+    if (!ctx->vtable_wayland || !ctx->vtable_wayland->vaGetImageBufferWl)
+        return VA_STATUS_ERROR_UNIMPLEMENTED;
+    return ctx->vtable_wayland->vaGetImageBufferWl(ctx, 
+                                    va_image, out_buffer);
+}
+
diff --git a/va/wayland/va_wayland.h b/va/wayland/va_wayland.h
index 2186eec..ba6d139 100755
--- a/va/wayland/va_wayland.h
+++ b/va/wayland/va_wayland.h
@@ -78,9 +78,9 @@ vaGetDisplayWl(struct wl_display *display);
  * format. if color conversion is required, vpp interface can help
  * before call this function
  *
- * @param[in]   dpy             the VA display
- * @param[in]   va_surface   the src VA surface
- * @param[out]   out_buffer  wl_buffer wraps from va_surface
+ * @param[in]       dpy             the VA display
+ * @param[in]       va_surface      the src VA surface
+ * @param[out]      out_buffer      wl_buffer wraps from va_surface
  * @return VA_STATUS_SUCCESS if successful
  */
 VAStatus
@@ -90,6 +90,30 @@ vaGetSurfaceBufferWl(
     struct wl_buffer **out_buffer
 );
 
+/**
+ * \brief create a wl_buffer which is wraped from va_image
+ *
+ * This function is used to get a wl_buffer from va_image, 
+ * usually they share the same buffer without additional copy.
+ * it's up to the client to manage the life cycle of these
+ * va_image and wl_buffer. (XXXX, life cycle of wl_buffer?)
+ *
+ * Implementation note: va_image and out_buffer has same
+ * format. if color conversion is required, vpp interface can help
+ * before call this function
+ *
+ * @param[in]       dpy             the VA display
+ * @param[in]       va_image        the src VA Image id
+ * @param[out]      out_buffer      wl_buffer wraps from va_surface
+ * @return VA_STATUS_SUCCESS if successful
+ */
+VAStatus
+vaGetImageBufferWl(
+    VADisplay    dpy,
+    VAImageID  va_image,
+    struct wl_buffer **out_buffer
+);
+
 /**@}*/
 
 #ifdef __cplusplus
-- 
1.7.5.4