ALLEGRO_VIDEO_EVENT_TYPE - Allegro 5 API

       Events sent by al_get_video_event_source(3alleg5).

   ALLEGRO_EVENT_VIDEO_FRAME_SHOW
       This  event  is  sent when it is time to show a new frame.  Once you receive this event, you can draw the
       current frame (as returned by al_get_video_frame(3alleg5)).   al_get_video_frame(3alleg5)  will  continue
       returning the same frame until the next ALLEGRO_EVENT_VIDEO_FRAME_SHOW is sent.

       user.data1 (ALLEGRO_VIDEO *)
              The video which generated the event.

       ALLEGRO_VIDEO_EVENT_TYPE - Allegro 5 API

       5.1.0

Allegro reference manual                                                       ALLEGRO_VIDEO_EVENT_TYPE(3alleg5)

              #include <allegro5/allegro_video.h>

              enum ALLEGRO_VIDEO_EVENT_TYPE