Help language development. Donate to The Perl Foundation

Reaper::Control cpan:SAMGWISE last updated on 2019-01-10

Reaper-Control-0.0.2/

Build Status

NAME

Reaper::Control - An OSC controller interface for Reaper

SYNOPSIS

use Reaper::Control;

# Start listening for UDP messages from sent from Reaper.
my $listener = reaper-listener(:host<127.0.0.1>, :port(9000));

# Respond to events from Reaper:
react whenever $listener.reaper-events {
    when Reaper::Control::Event::Play {
        put 'Playing'
    }
    when Reaper::Control::Event::Stop {
        put 'stopped'
    }
    when Reaper::Control::Event::PlayTime {
        put "seconds: { .seconds }\nsamples: { .samples }\nbeats: { .beats }"
    }
    when Reaper::Control::Event::Mixer {
        put "levels: ", join ',', .master.vu, .tracks.map( *.vu ).Slip
    }
    when Reaper::Control::Event::Unhandled {
        .perl.say
    }
}

DESCRIPTION

Reaper::Control is an OSC controller interface for Reaper, a digital audio workstation. Current features are limited and relate to listening for play/stop, playback position and mixer levels but there is a lot more which can be added in the future.

To start listening call the reaper-listener subroutine, you can then obtain a Supply of events from the listener's .reaper-events method. All events emitted from the supply are subclasses of the Reaper::Control::Event role. Messages not handled by the default message handler are emitted as Reaper::Control::Unhandled objects, their contents can be accessed in the message attribute.

To skip the default message handler you may instead tap the lister's .reaper-raw method. This supply emits Net::OSC::Bundle objects, see the Net::OSC module for more on this object.

AUTHOR

Sam Gillespie samgwise@gmail.com

COPYRIGHT AND LICENSE

Copyright 2018 Sam Gillespie

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.

sub reaper-listener

sub reaper-listener(
    Str :$host,
    Int :$port,
    Str :$protocol = "UDP"
) returns Reaper::Control::Listener

Create a Listener object which encapsulates message parsing and event parsing. The protocol argument currently only accepts UDP. Use the reaper-events method to obtain a Supply of events received, by the Listener, from Reaper.

Reaper::Control::Listener

This class bundles up a series of tapped supplies which define a listener workflow. To construct a new listener call the listener-udp method to initialise a UDP listener workflow.

Reaper::Control::Event

Base class for all reaper events. No functionality here, just an empty class.

Reaper::Control::Event::PlayState

An abstract class defining the methods of Play and Stop classes. Use this type if you need to accept either Play or Stop objects.

Reaper::Control::Event::Play

The Play version of the PlayState role. This object is emitted when playback is started.

Reaper::Control::Event::Stop

The Stop version of the PlayState role. This object is emitted when playback is stopped.

Reaper::Control::Event::PlayTime

This message bundles up elapsed seconds, elapsed samples and a string of the current beat position.

Reaper::Control::Event::Level

This message bundles up audio levels from the mixer.

Reaper::Control::Event::Mixer

This message bundles up audio level information from the mixer. Master level is held in the master attribute and tracks are stored in the tracks attribute.

Reaper::Control::Event::Unhandled

A generic wrapper for messages not handled by the core interface