From 22aef2ccd3af406f5d1044c0684799d17e8e8c0a Mon Sep 17 00:00:00 2001
From: Herman Chen <herman.chen@rock-chips.com>
Date: Thu, 12 Mar 2020 15:50:03 +0800
Subject: [PATCH] [mpp_common]: Add container_of macro

Include <stddef.h> and add container_of macro.

Change-Id: Ie439b7683e026be9336e618c605b3b934e4fde38
Signed-off-by: Herman Chen <herman.chen@rock-chips.com>
---
 osal/inc/mpp_common.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/osal/inc/mpp_common.h b/osal/inc/mpp_common.h
index ac0223a0..0aca15f8 100644
--- a/osal/inc/mpp_common.h
+++ b/osal/inc/mpp_common.h
@@ -148,11 +148,14 @@
 #define fseeko                  fseeko64
 #else
 #include <unistd.h>
+#include <stddef.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #define mkdir(x)                mkdir(x, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)
 #endif
 
+#define container_of(ptr, type, member) \
+    ((type *)((char *)(ptr) - offsetof(type, member)))
 
 #define __RETURN                __Return
 #define __FAILED                __failed