media_play on locked panel bmap

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media_play on locked panel bmap #404962 07/20/12 06:47 07/20/12 06:47
Joined: Jan 2012 Posts: 39 B BySharDe OP Newbie
BySharDe OP Newbie B Joined: Jan 2012 Posts: 39	I tested a demo postprocessing on a movie. see http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=404795#Post404795 However, I found that the panel texture playing movie on it, do not have a "lock/unloack" mechanism. It means that when you apply bmap_process, the source image(movie texture) may have parts of two different frames' content, which will come into "interlacement". How to make sure that 1 lock the panel to be played with movie 2 finish playing a full frame of movie 3 unlock the movie panel 4 processing it 5 lock the movie panel and play the next frame and so on ? This is some of "thread synchronization", right?

Re: media_play on locked panel bmap [Re: BySharDe] #404964
07/20/12 07:03 07/20/12 07:03

Joined: Jan 2012
Posts: 39

BySharDe

OP
Newbie

BySharDe

OP
Newbie

Joined: Jan 2012
Posts: 39

The idea is like this

Code:

movie_handle = media_play(file1, myblack, 100);
while(media_playing(movie_handle))
{
	bmap_lock(myblack,0); // 1.work a little
	bmap_lock(P.bmap,0);
	
	media_pause(movie_handle); // 2.work well but cause low movie speed

	bmap_process(P.bmap,myblack,mysunglass);
	
	media_start(movie_handle);
	
	bmap_unlock(myblack);
	bmap_unlock(P.bmap);
	
	wait(1);
}

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