DTK_VIDEO_EXEC(3)						Draw Toolkit manual						 DTK_VIDEO_EXEC(3)

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)