Module waveform 

Audio waveforms: decoding a file to mono peaks and drawing the waveform picture Eagle uses as an audio item’s thumbnail (see the Thumbnails chapter of the docs). Eagle caches no peak data on disk, so neither does falcon.

Constants

COLOR

Eagle’s waveform colour, #0072EF.

HEIGHT

WIDTH

Size Eagle records for an audio item and draws its waveform at.

Functions

peaks

Decodes an audio file and returns buckets (min, max) pairs of the mono mix, in -1..=1. None if it can’t be decoded.

rebucket

Merges (min, max) pairs into buckets evenly spread groups.

render

Draws peaks as a mirrored waveform, one column per peak, scaled so the loudest peak fills the height (Eagle’s waveform is normalised), on a transparent background.

thumbnail

The audio thumbnail: a 280×140 waveform.