android: add helper to convert buffer_handle_t to gralloc_handle_t ptr

Clients frequently need to convert a buffer_handle_t (aka
native_handle_t *) to a gralloc_handle_t ptr. This is a simple cast, but
add an inline function to do the conversion.

Reviewed-by: Robert Foss <robert.foss@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/android/gralloc_handle.h b/android/gralloc_handle.h
index b0f5048c..43255ba5 100644
--- a/android/gralloc_handle.h
+++ b/android/gralloc_handle.h
@@ -76,6 +76,11 @@ struct gralloc_handle_t {
         ((sizeof(struct gralloc_handle_t) - sizeof(native_handle_t))/sizeof(int))       \
          - GRALLOC_HANDLE_NUM_FDS)
 
+static inline struct gralloc_handle_t *gralloc_handle(buffer_handle_t handle)
+{
+        return (struct gralloc_handle_t *)handle;
+}
+
 /**
  * Create a buffer handle.
  */