#define AVMutex char
-#define ff_mutex_init(mutex, attr) (0)
-#define ff_mutex_lock(mutex) (0)
-#define ff_mutex_unlock(mutex) (0)
-#define ff_mutex_destroy(mutex) (0)
+static inline int ff_mutex_init(AVMutex *mutex, const void *attr){ return 0; }
+static inline int ff_mutex_lock(AVMutex *mutex){ return 0; }
+static inline int ff_mutex_unlock(AVMutex *mutex){ return 0; }
+static inline int ff_mutex_destroy(AVMutex *mutex){ return 0; }
#define AVOnce char
#define AV_ONCE_INIT 0