audiodynamic plugin just distorts audio

Hi,

I am trying to use the audiodynamic plugin but whatever I do it only 
causes waveform distortion. I had a look at the source code and it seems 
to me that it is literally applying the threshold and ratio to every 
single audio sample rather than detecting the output level as a peak/rms 
level, applying the threshold and ratio to that, then applying gain to 
the audio samples based on the that level.

Am I missing something or is this plugin really as broken as I think it is?

For example, the following launch line results in a pretty nasty 
distortion and clipping of a sawtooth wave.

gst-launch-1.0 audiotestsrc wave=saw ! audiodynamic 
characteristics=soft-knee mode=compressor threshold=0.2 ratio=40 ! 
autoaudiosink


I am really looking for an audio peak limiter with makeup gain. I tried 
the lsp-plug-in-plugins-lv2-compressor-stereo plugin too but none of the 
parameters seem to do anything, not even input or output gain.

Thanks & regards,

Simon