Simple Compressor class (C++)

Type : stereo, feed-forward, peak compressor
References : Posted by Citizen Chunk
Linked file : http://www.chunkware.com/opensource/SimpleComp.zip
Notes :
Everyone seems to want to make their own compressor plugin these days, but very few know where to start. After replying to so many questions on the KVR Dev Forum, I figured I might as well just post some ready-to-use C++ source code.

This is a C++ implementation of a simple, stereo, peak compressor. It uses a feed-forward topology, detecting the sidechain level pre-gain reduction. The sidechain detects the rectified peak level, with stereo linking to preserve imaging. The attack/release uses the EnvelopeDetector class (posted in the Analysis section).

Notes:
- Make sure to call initRuntime() before processing starts (i.e. call it in resume()).
- The process function takes a stereo input.
- VST params must be mapped to a practical range when setting compressor parameters. (i.e. don't try setAttack( 0.f ).)

(see linked files)
Comments
from : tl_163[AT]hotmail[DOT]com
comment : This code works perfectly, and I have tried a number of sound and each worked correctly. The conversion is linear in logarithm domain. The code has been written in such a professional style, can not believe it is FREE!! Keep it up. Two super huge thumbs up. Ting

from : scuzzphut[AT]gmail[DOT]com
comment : source file seems to be down :-( anyone have a local copy ???

from : citizenchunk[ at ]chunkware[ dot ]com
comment : there are some updates: mainly, there is now a SimpleGate class, which implements a simple gate. other than that, minor changes to the code -- but all public functions should work the same. *** NEW FILE NAME: http://www.chunkware.com/opensource/SimpleCompGate.zip

from : jinjing20012001[AT]yahoo[DOT]com
comment : hello everybady! I am a Chinese student, I want to download the code from http://www.chunkware.com/opensource/SimpleCompGate.zip but because the server can not do his job well,I have no chance to download the code.I really hope kind people who have been have the code can tansfer a copy to me!I will be appreciated very much. my emial is listed as following: jinjing20012001@yahoo.com I am looking for your reply as soon as possible.

from : citizenchunk[ at ]chunkware[DOT]com
comment : sorry about the link. the new source is at http://www.chunkware.com/downloads/simpleSource.zip

from : ben[AT]benvesco[DOT]com
comment : MIRROR: http://www.benvesco.com/dump/simpleSource.zip This code has been missing for some time at the posted locations. I found someone with a copy and am now mirroring these files for download on my server. I believe the software license allows this mirroring. The code is unchanged and belongs to the original owner.

from : jed_hubic[AT]yahoo[DOT]com
comment : Thank you Ben! This help me wrap my head around DSP a bit more. It's a shame this site is essentially dead...

from : thewjew[AT]gmail[DOT]com
comment : is this code still available?

from : christian[DOT]schragen[AT]gmail[DOT]com
comment : I'm new in programming. how do I embed this code to my project? vst sdk is already loaded from the steinberg developer site. can somebody give me a step by step guide?

from : jamie[AT]jamiebullock[DOT]com
comment : It loos like the Chunkware code can now be found on GitHub: https://github.com/music-dsp-collection/chunkware-simple-dynamics/tree/master/simpleSource

from : mike[AT]mikegazzaruso[DOT]com
comment : Hi, may i know the range of values to set in SimpleComp? Expecially those for Threshold and Ratio. I set them to 2 and -30 but my sound get incredibly distorted after that. Thanks.