extern OMX_ERRORTYPE (*pf_get_roles_of_component)(OMX_STRING, OMX_U32 *, OMX_U8 **);
/* Extra IOMX android functions. Can be NULL if we don't link with libiomx */
-OMX_ERRORTYPE (*pf_enable_graphic_buffers)(OMX_HANDLETYPE, OMX_U32, OMX_BOOL);
-OMX_ERRORTYPE (*pf_get_graphic_buffer_usage)(OMX_HANDLETYPE, OMX_U32, OMX_U32*);
-OMX_ERRORTYPE (*pf_get_hal_format) (const char *, int *);
+extern OMX_ERRORTYPE (*pf_enable_graphic_buffers)(OMX_HANDLETYPE, OMX_U32, OMX_BOOL);
+extern OMX_ERRORTYPE (*pf_get_graphic_buffer_usage)(OMX_HANDLETYPE, OMX_U32, OMX_U32*);
+extern OMX_ERRORTYPE (*pf_get_hal_format) (const char *, int *);
int InitOmxCore(vlc_object_t *p_this);
void DeinitOmxCore(void);