totem-gstreamer should use bilinear filtering when scaling without Xv

Binary package hint: totem-gstreamer

I have a setup where Xv doesn't work. I know, that's something else to fix. autovideosink is able to chose ximagesink properly on such a setup, but there's no way to instruct videoscale to use bilinear filtering.

My suggestion would be to have totem-gstreamer insert videoscale in the pipeline (if not already done) and tell it to use method=1 which is bilinear filtering. Nearest neighboor is simply too ugly.

If bilinear filtering CPU consumption is an issue, make it optional through a gconf key or so. Or make a smart assumption regarding the host's CPU speed.