NAME

       dtk_video_exec - Start/stop/pause a video texture

SYNOPSIS

       #include <dtk_video.h>

       int dtk_video_exec(dtk_htex vid, int command, const void* arg);

DESCRIPTION

       This  function  changes the state (or playing position) of a video texture referenced by vid according to
       the value of command:

       DTKV_CMD_PLAY: Set the video to play. arg is interpreted as a
              pointer to a variable of type int whose  non  zero  value  indicates  that  the  state  change  is
              asynchronous  and  can  be  finished  after  the  function  returns. If arg is NULL, the change is
              performed synchronously.

       DTKV_CMD_PAUSE: Set the video to pause. arg is interpreted as a
              pointer to a variable of type int whose  non  zero  value  indicates  that  the  state  change  is
              asynchronous  and  can  be  finished  after  the  function  returns. If arg is NULL, the change is
              performed synchronously.

       DTKV_CMD_SEEK: Seek the video to the position specified by arg
              which is then interpreted as a pointer to a variable of type long  representing  the  position  in
              milliseconds  from the beginning of the video.  arg is allowed to be NULL. In that case, the video
              will be positioned at its start.

       vid must be a dynamic texture created by one of the functions dtk_create_video_*(3).  If  the  video  was
       already in the requested state, the function will do nothing.

       If the video is created from the live source (webcam, network broadcast...), executing DTKV_CMD_SEEK will
       fail.

RETURN VALUE

       0 if the state has been changed or was already the one requested, -1 otherwise.

SEE ALSO

       dtk_load_video_file(3),     dtk_load_video_gst(3),     dtk_load_video_test(3),     dtk_load_video_udp(3),
       dtk_load_video_tcp(3)

EPFL                                                  2011                                     DTK_VIDEO_EXEC(3)