* \return a vout if p_fmt is non NULL and the request is successfull, NULL
* otherwise
*/
-VLC_EXPORT( vout_thread_t *, vout_Request, ( vlc_object_t *p_this, vout_thread_t *p_vout, video_format_t *p_fmt ) );
+VLC_EXPORT( vout_thread_t *, vout_Request, ( vlc_object_t *p_this, vout_thread_t *p_vout, const video_format_t *p_fmt ) );
#define vout_Request(a,b,c) vout_Request(VLC_OBJECT(a),b,c)
/**
* \param p_fmt the video format requested
* \return a vout if the request is successfull, NULL otherwise
*/
-VLC_EXPORT( vout_thread_t *, vout_Create, ( vlc_object_t *p_this, video_format_t *p_fmt ) );
+VLC_EXPORT( vout_thread_t *, vout_Create, ( vlc_object_t *p_this, const video_format_t *p_fmt ) );
#define vout_Create(a,b) vout_Create(VLC_OBJECT(a),b)
/**