[QUARTZ] Add FFMpeg video wrapper filter (take 3)

[Christian Costa]

>>
>
> Ideally, I don't think we want to link to libavcodec at all. We should 
> import code for as many filters as native implements, without stepping 
> on patented territory.

How would you benefit from ffmpeg update in a seamlessly manner?

Note that some months ago, I did a version of the wrapper that directly
uses source files in the makefile
but I realized that taking benefit of acceleration (i386, mmx, sse,
etc...) would require merging
a lot of things from ffmpeg build to Wine's one. No to mention that I
was not sure that ffmpeg sources would
be accepted again in Wine tree. That's why I switched back to use the
library.

> That way, apps that specifically ask for CLSID_CMpegAudioCodec, for 
> example, will get exactly what they want. 

I was planning to redirect all these standard DirectShow filters to the
wrapper.

Bye,
Christian