Go package capable of generating waveform images from audio streams. MIT Licensed.
Go
Latest commit 6b28917 Jul 7, 2016 @mdlayher committed on GitHub Merge pull request #9 from mewpull/master
Make use of latest Azul3D audio API.

README.md

waveform Build Status GoDoc

Go package capable of generating waveform images from audio streams. MIT Licensed.

This library supports any audio streams which the azul3d/engine/audio package is able to decode. At the time of writing, this includes:

  • WAV
  • FLAC

An example binary called waveform is provided which show's the library's usage. Please see cmd/waveform/README.md for details.

Examples

Here are several example images generated using waveform. Enjoy!

Generate a waveform image, and scale it both vertically and horizontally.

$ cat ~/Music/02\ -\ Peace\ Of\ Mind.flac | waveform -x 5 -y 2 > ~/waveform.png

waveform

Apply a foreground and background color, to make things more interesting.

cat ~/Music/02\ -\ Peace\ Of\ Mind.flac | waveform -fg=#FF3300 -bg=#0099CC -x 5 -y 2 > ~/waveform_color.png

waveform_color

Apply an alternate foreground color, draw using a stripe pattern.

cat ~/Music/02\ -\ Peace\ Of\ Mind.flac | waveform -fg=#FF3300 -bg=#0099CC -alt=#FF9933 -fn stripe -x 5 -y 2 > ~/waveform_stripe.png

waveform_stripe

Apply an alternate foreground color, draw using a random fuzz pattern.

cat ~/Music/02\ -\ Peace\ Of\ Mind.flac | waveform -fg=#FF3300 -bg=#0099CC -alt=#FF9933 -fn fuzz -x 5 -y 2 > ~/waveform_fuzz.png

waveform_fuzz

Apply a new set of colors, draw using a gradient pattern.

cat ~/Music/02\ -\ Peace\ Of\ Mind.flac | waveform -fg=#FF0000 -bg=#00FF00 -alt=#0000FF -fn gradient -x 5 -y 2 > ~/waveform_gradient.png

waveform_gradient

Apply a checkerboard color set, draw using a checkerboard pattern.

cat ~/Music/02\ -\ Peace\ Of\ Mind.flac | waveform -fg=#000000 -bg=#222222 -alt=#FFFFFF -fn checker -x 5 -y 2 > ~/waveform_checker.png

waveform_checker