New Plugin: SignalGen

[dgrace]

I wrote this one just to figure out how to write plugins, as well as to generate some test data. Maybe it'll be useful to someone else. It's a signal generator. Can do sine, square, triangle, and sawtooth waves, as well as just return linear time. Arguments are:

Waveform: one of Linear, Sine, Triangle, Square, or Sawtooth
Frequency: any number (ignored for Linear)
Amplitude: any number
Phase: any number, 1.0 is one complete cycle
Offset: any number - this is added to the overall level (DC offset)

The example skin demonstrates frequency modulation on a square wave.

Enjoy!

dave