GST_PAD_GET_PREROLL_LOCK  846 gst/gstpad.h   #define GST_PAD_PREROLL_LOCK(pad)       (g_mutex_lock(GST_PAD_GET_PREROLL_LOCK(pad)))
GST_PAD_GET_PREROLL_LOCK  847 gst/gstpad.h   #define GST_PAD_PREROLL_TRYLOCK(pad)    (g_mutex_trylock(GST_PAD_GET_PREROLL_LOCK(pad)))
GST_PAD_GET_PREROLL_LOCK  848 gst/gstpad.h   #define GST_PAD_PREROLL_UNLOCK(pad)     (g_mutex_unlock(GST_PAD_GET_PREROLL_LOCK(pad)))
GST_PAD_GET_PREROLL_LOCK  852 gst/gstpad.h       g_cond_wait (GST_PAD_GET_PREROLL_COND (pad), GST_PAD_GET_PREROLL_LOCK (pad))
GST_PAD_GET_PREROLL_LOCK  854 gst/gstpad.h       g_cond_timed_wait (GST_PAD_GET_PREROLL_COND (pad), GST_PAD_GET_PREROLL_LOCK (pad), timeval)