out of process gstreamer

[KoKuToru]

gstreamer sometimes crashes gtox.. nothing I can do..

One solution would be to separate video/image/audio decode/encode into a separated process (background process)

So crashing won't crash gtox.

Pros:

• memory leak free (when process exists all memory it used is freed)
• crash doesn't crash gtox
• might it possible to compile gtox without gstreamer (without audio/video support)
• might make it simple to switch to something without gstreamer... (for windows/mac ?)
• simpler thread logic (right now I must be very careful to be on the right thread..)

Cons:

• little more complex (communication with pipes..)
• extra process/application