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Moodbar

An implementation of the Moodbar audio timeline visualization.

This is a drop-in replacement for the outdated Moodbar program originally developed for Amarok.

Files in the gst and src directories are taken from Clementine (revision 3886f3d1e4b29d028c1bacf474bc40d1c45c2ea9, 2014-12-22) with slight modifications to remove some dependencies.

Requirements

  • FFTW 3
  • GStreamer 1
    • GStreamer Base Plugins

For building:

  • Development files for the above
  • C++ compiler
  • Meson. If your OS doesn't have a package for this, you can install it through pip (requires Python 3).
  • pkgconf or pkg-config
  • Ninja

At runtime you may also need other GStreamer plugin packages to read your audio files. For example, to process MP3 files you may have to install GStreamer Ugly Plugins.

Building & installing

meson --buildtype=release build/
cd build/
ninja
sudo ninja install

You can add -Db_lto=true to the meson call to produce slightly more efficient code.

For packagers

Building with custom flags and prefix, and staging to destdir:

env CXXFLAGS=... LDFLAGS=... meson --buildtype=plain --prefix=... builddir
ninja -C builddir
env DESTDIR=... ninja -C builddir install

See the Meson documentation for more info.

Usage

moodbar -o OUTPUT INPUT

This creates an output file containing pixel values in R1 G1 B1 R2 G2 B2 ... format.