[MPlayer-dev-eng] Patch: vo_shm - simple embedding vo

[Attila Kinali]

On Mon, 08 Sep 2003 16:02:08 +0200
Flemming Frandsen <ff at partyticket.net> wrote:

> I have a project where I want to play a movie as a texture in OpenGL in 
> realtime, so naturally I turned to MPlayer, I copy+pasted from vo_tga 
> and created a video out plugin that outputs frames to shared memory.
> 
> It doesn't use any locking, so it should be low-overhead for both 
> mplayer and the consumer, but that also means that the consumer must 
> have it's own framerate (which my opengl application does have).
> 
> It works by having the consumer set up a shared memory segment that 
> holds the shmids of two frame buffers, vo_shm writes to the framebuffer 
> with the lowest frame number and the consumer reads from the framebuffer 
> with the higest frame number, that way they don't step on eachothers toes.
> 
> I've tested it and it works quite nicely, so here is the patch if you'd 
> like to include it: http://dion.swamp.dk/dl/mplayer-1.0pre1-shm1.diff.gz
> 
> Any comments?

I just had a quick look, seems to be ok (although i'm not an vo expert)
Could someone have a deeper look at it ?

			Attila Kinali

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