[MPlayer-dev-eng] equlaizer filter is ported

[Anders Johansson]

Hi,

The audio eq plugin is ported to libaf usage:

mplayer -af equalizer=12.0:12.0:12.0:12.0:-12.0:-12.0:-12.0:12.0:12.0 movie.avi

the parameters is the gain in the different frequency bands (max =
12dB and min = -12dB) starting from 31.25 Hz and ending with
16kHz. For really good frequency accuracy on the higer frequencies use
with resample=96000.

I have changed the implementation a bit and the eq kernel is now using
floating point which improves the sound quality and gain accuracy a
lot. I have also fixed a couple of bugs that were present in the
prevous implementation.


BTW: I saw that the libaf was on the TODO list. It will be in a state
where it can be called "finished" (at least in 0.9 release sense) by
the end of next week. All I have to do is to enable the automatic CPU
detection and that should be quite easy.

The next change I will do is to enable floating point support in all
the filters, and that is a quite major change, so it will have to wait
until after 0.9.

Cheers,
//Anders