gbm: Add gbm_bo_get_fd()

[mesa.git] / src / gbm / main / gbm.c

diff --git a/src/gbm/main/gbm.c b/src/gbm/main/gbm.c
index b057386b946b6efb85f3319d171bbc84621b0ca9..ad5208ca13607aa48dd1771eea7dbd339a830bb6 100644 (file)
--- a/src/gbm/main/gbm.c
+++ b/src/gbm/main/gbm.c
@@ -43,7 +43,7 @@
 
 #define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
 
-struct gbm_device *devices[16];
+static struct gbm_device *devices[16];
 
 static int device_num = 0;
 
@@ -230,6 +230,23 @@ gbm_bo_get_handle(struct gbm_bo *bo)
    return bo->handle;
 }
 
+/** Get a DMA-BUF file descriptor for the buffer object
+ *
+ * This function creates a DMA-BUF (also known as PRIME) file descriptor
+ * handle for the buffer object.  Eeach call to gbm_bo_get_fd() returns a new
+ * file descriptor and the caller is responsible for closing the file
+ * descriptor.
+
+ * \param bo The buffer object
+ * \return Returns a file descriptor referring  to the underlying buffer
+ */
+GBM_EXPORT int
+gbm_bo_get_fd(struct gbm_bo *bo)
+{
+   return bo->gbm->bo_get_fd(bo);
+}
+
+
 /** Write data into the buffer object
  *
  * If the buffer object was created with the GBM_BO_USE_WRITE flag,