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-rw-r--r--libvpx/vp8/common/variance.h12
1 files changed, 10 insertions, 2 deletions
diff --git a/libvpx/vp8/common/variance.h b/libvpx/vp8/common/variance.h
index 01193b8..89a32a7 100644
--- a/libvpx/vp8/common/variance.h
+++ b/libvpx/vp8/common/variance.h
@@ -9,11 +9,15 @@
*/
-#ifndef VARIANCE_H
-#define VARIANCE_H
+#ifndef VP8_COMMON_VARIANCE_H_
+#define VP8_COMMON_VARIANCE_H_
#include "vpx_config.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
typedef unsigned int(*vp8_sad_fn_t)(
const unsigned char *src_ptr,
int source_stride,
@@ -112,4 +116,8 @@ typedef struct variance_vtable
#endif
} vp8_variance_fn_ptr_t;
+#ifdef __cplusplus
+} // extern "C"
#endif
+
+#endif // VP8_COMMON_VARIANCE_H_