Enum TransformFn

pub enum TransformFn<'a> {
    Basic(fn(&[f32], f32) -> Vec<f32>),
    Complex(&'a dyn Fn(&[f32], f32) -> Vec<(f64, f64)>),
}

Parameter type for open_window_connect_audio. Describes how the audio data shall be transformed, and thus, how it should be displayed in the lower part of the window.

The function is called every x milliseconds (refresh rate of window).

This works cross-platform (Windows, MacOS, Linux).

Variants

Basic(fn(&[f32], f32) -> Vec<f32>)

Synchronized x-axis with the original data. Useful for transformations on the waveform, such as a (lowpass) filter.

Functions takes amplitude values and transforms them to a new amplitude value. It gets the sampling rate as second argument.

Complex(&'a dyn Fn(&[f32], f32) -> Vec<(f64, f64)>)

Use this, when the x-axis is different than for the original data. For example, if you want to display a spectrum.

Functions takes amplitude values (and their index) and transforms them to a new (x,y)-pair. Takes a closure instead of a function, so that it can capture state. It gets the sampling rate as second argument.