NAME¶
getting started - numm installation and usage
SYNOPSIS¶
numm-run
FILE
import numm
DESCRIPTION¶
numm is a python library — the bastard child of
Processing.org and
MATLAB, if you will — that fuses
python,
numpy, and
gstreamer together to create a numerical-computing environment for
multimedia generation, analysis, and interaction.
Installation¶
A
Debian package is provided for ease of installation on Debian and
derivative operating systems, such as
Ubuntu; we recommend you abandon
alternative systems and install Debian, but in the interim direct your
attention to virtualization software such as
VirtualBox.
The following command downloads and installs numm:
% wget http://numm.org/numm/releases/python-numm_0.1-1_all.deb
% sudo dpkg -i python-numm_0.1-1_all.deb
Usage¶
At its simplest,
numm provides three pairs of invertable functions that
connect common media formats with
numpy:
Images represented as (
height,
width,
color)
numpy.uint8 arrays.
- •
- image2np(path) → np
- •
- np2image(np, path)
Sounds as (
frames,
channels)
numpy.int16s
- •
- sound2np(path) → np
- •
- np2sound(np, path) # XXX: must be .wav
Videos as (
frames,
height,
width,
color)
numpy.uint8s
- •
- video2np(path) → np
- •
- np2video(np, path) # XXX: must be .mkv
For rapid-prototyping of interactive numpy-based audio-visual experiments, the
numm package has a real-time mode. The
numm package installs a program
named
numm-run, which launches (and reloads on modification) python
scripts that may implement any subset of the following functions, which are
asynchronously called as needed:
- •
- video_in(a) # webcam
- •
- video_out(a) # mutate a in-place to set
video
- •
- audio_in(a) # mic
- •
- audio_out(a) # mutate a for audio output
- •
- mouse_in(type, px, py, button)
- •
- keyboard_in(type, key)
SEE ALSO¶
numm-run(1),
numm.one-bit-instrument(7),
numm.spectral-analysis(7)
