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MIT License
Copyright (c) 2023 Onyx and Iris
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://github.com/onyx-and-iris/voicemeeter-rb/blob/dev/LICENSE)
[![Ruby Code Style](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://github.com/standardrb/standard)
# Ruby Wrapper for Voicemeeter API
This gem offers a Ruby interface for the Voicemeeter Remote C API.
For an outline of past/future changes refer to: [CHANGELOG](CHANGELOG.md)
## Tested against
- Basic 1.0.8.8
- Banana 2.0.6.8
- Potato 3.0.2.8
## Requirements
- [Voicemeeter](https://voicemeeter.com/)
- Ruby 3.2 or greater
## Installation
### Bundler
```
bundle add 'voicemeeter'
bundle install
```
### Gem
`gem install 'voicemeeter'`
## `Use`
Simplest use case, request a Remote class of a kind, then pass a block to run.
Login and logout are handled for you in this scenario.
#### `main.rb`
```ruby
require "voicemeeter"
vm = Voicemeeter.remote(:banana)
# vm.run accepts a block
vm.run do
# mute the leftmost strip
vm.strip[0].mute = true
puts vm.strip[0].mute
# disable eq for second from left bus
vm.bus[1].eq = false
puts vm.bus[1].eq
end
```
Otherwise you must remember to call `vm.login` `vm.logout` at the start/end of your code.
## `kind_id`
Pass the kind of Voicemeeter as an argument. kind_id may be:
- `:basic`
- `:banana`
- `:potato`
## `Available commands`
### Strip
The following properties are available.
- `mono`: boolean
- `solo`: boolean
- `mute`: boolean
- `gain`: float, from -60.0 to 12.0
- `comp`: float, from 0.0 to 10.0
- `gate`: float, from 0.0 to 10.0
- `audibility`: float, from 0.0 to 10.0
- `limit`: int, from -40 to 12
- `A1 - A5`, `B1 - B3`: boolean
- `label`: string
- `mc`: boolean
- `k`: int, from 0 to 4
- `bass`: float, from -12.0 to 12.0
- `mid`: float, from -12.0 to 12.0
- `treble`: float, from -12.0 to 12.0
- `reverb`: float, from 0.0 to 10.0
- `delay`: float, from 0.0 to 10.0
- `fx1`: float, from 0.0 to 10.0
- `fx2`: float, from 0.0 to 10.0
- `pan_x`: float, from -0.5 to 0.5
- `pan_y`: float, from 0.0 to 1.0
- `color_x`: float, from -0.5 to 0.5
- `color_y`: float, from 0.0 to 1.0
- `fx_x`: float, from -0.5 to 0.5
- `fx_y`: float, from 0.0 to 1.0
- `postreverb`: boolean
- `postdelay`: boolean
- `postfx1`: boolean
- `postfx2`: boolean
example:
```ruby
vm.strip[3].gain = 3.7
puts vm.strip[0].label
```
The following methods are available.
- `appgain(name, value)`: string, float, from 0.0 to 1.0
Set the gain in db by value for the app matching name.
- `appmute(name, value)`: string, bool
Set mute state as value for the app matching name.
example:
```ruby
vm.strip[5].appgain("Spotify", 0.5)
vm.strip[5].appmute("Spotify", true)
```
##### Gainlayers
- `gain`: float, from -60.0 to 12.0
example:
```ruby
vm.strip[3].gainlayer[3].gain = 3.7
```
Gainlayers are defined for potato version only.
##### Levels
The following properties are available.
- `prefader`
- `postfader`
- `postmute`
example:
```ruby
puts vm.strip[3].levels.prefader
```
Level properties will return -200.0 if no audio detected.
### Bus
The following properties are available.
- `mono`: boolean
- `mute`: boolean
- `eq`: boolean
- `eq_ab`: boolean
- `sel`: boolean
- `gain`: float, from -60.0 to 12.0
- `label`: string
- `returnreverb`: float, from 0.0 to 10.0
- `returndelay`: float, from 0.0 to 10.0
- `returnfx1`: float, from 0.0 to 10.0
- `returnfx2`: float, from 0.0 to 10.0
- `monitor`: boolean
example:
```ruby
vm.bus[3].gain = 3.7
puts vm.bus[0].label
vm.bus[4].mono = true
```
##### Modes
- `normal`: boolean
- `amix`: boolean
- `bmix`: boolean
- `composite`: boolean
- `tvmix`: boolean
- `upmix21`: boolean
- `upmix41`: boolean
- `upmix61`: boolean
- `centeronly`: boolean
- `lfeonly`: boolean
- `rearonly`: boolean
example:
```ruby
vm.bus[4].mode.amix = true
```
##### Levels
The following properties are available.
- `all`
example:
```ruby
puts vm.bus[0].levels.all
```
`levels.all` will return -200.0 if no audio detected.
### Strip | Bus
The following methods are available
- `fadeto(amount, time)`: float, int
- `fadeby(amount, time)`: float, int
Modify gain to or by the selected amount in db over a time interval in ms.
example:
```ruby
vm.strip[0].fadeto(-10.3, 1000)
vm.bus[3].fadeby(-5.6, 500)
```
#### Strip.Device | Bus.Device
The following properties are available
- `name`: str
- `sr`: int
- `wdm`: str
- `ks`: str
- `mme`: str
- `asio`: str
example:
```ruby
puts vm.strip[0].device.name
vm.bus[0].device.asio = "Audient USB Audio ASIO Driver"
```
strip|bus device parameters are defined for physical channels only.
name, sr are read only. wdm, ks, mme, asio are write only.
### Macrobuttons
Three modes defined: state, stateonly and trigger.
- `state`: boolean
- `stateonly`: boolean
- `trigger`: boolean
example:
```ruby
vm.button[37].state = true
vm.button[55].trigger = false
```
### Recorder
The following properties accept boolean values.
- `loop`: boolean
- `A1 - A5`: boolean
- `B1 - A3`: boolean
The following methods are available
- `play`
- `stop`
- `pause`
- `record`
- `ff`
- `rew`
- `load(filepath)`: string
example:
```ruby
vm.recorder.play
vm.recorder.stop
# Enable loop play
vm.recorder.loop = true
# Disable recorder out channel B2
vm.recorder.B2 = false
# filepath as string
vm.recorder.load('C:\music\mytune.mp3')
```
### VBAN
- `vm.vban.enable` `vm.vban.disable` Turn VBAN on or off
##### Instream | Outstream
The following properties are available.
- `on`: boolean
- `name`: string
- `ip`: string
- `port`: int, range from 1024 to 65535
- `sr`: int, (11025, 16000, 22050, 24000, 32000, 44100, 48000, 64000, 88200, 96000)
- `channel`: int, from 1 to 8
- `bit`: int, 16 or 24
- `quality`: int, from 0 to 4
- `route`: int, from 0 to 8
SR, channel and bit are defined as readonly for instreams. Attempting to write to those parameters will throw an error. They are read and write for outstreams.
example:
```ruby
# turn VBAN on
vm.vban.enable
# turn on vban instream 0
vm.vban.instream[0].on = true
# set bit property for outstream 3 to 24
vm.vban.outstream[3].bit = 24
```
### Command
Certain 'special' commands are defined by the API as performing actions rather than setting values. The following methods are available:
- `show` : Bring Voiceemeter GUI to the front
- `shutdown` : Shuts down the GUI
- `restart` : Restart the audio engine
The following properties are write only and accept boolean values.
- `showvbanchat`: boolean
- `lock`: boolean
example:
```ruby
vm.command.restart
vm.command.showvbanchat = true
```
### Device
- `ins` `outs` : Returns the number of input/output devices
- `input(i)` `output(i)` : Returns a hash of device properties for device[i]
example:
```ruby
vm.run { (0...vm.device.ins).each { |i| puts vm.device.input(i) } }
```
### Midi
The following properties are available:
- `channel`: int, returns the midi channel
- `current`: int, returns the current (or most recently pressed) key
The following methods are available:
- `get(key)`: int, returns most recent velocity value for a key
example:
```ruby
puts vm.midi.get(12)
```
get may return nil if no value for requested key in midi cache
### Multiple parameters
- `apply`
Set many strip/bus/macrobutton/vban parameters at once, for example:
```ruby
vm.apply(
{
strip_0: {
mute: true,
gain: 3.2,
A1: true
},
bus_3: {
gain: -3.2,
eq: true
},
button_39: {
stateonly: true
},
vban_outstream_3: {
on: true,
bit: 24
}
}
)
```
Or for each class you may do:
```ruby
vm.strip[0].apply(mute: true, gain: 3.2, A1: true)
vm.vban.outstream[0].apply(on: true, name: "streamname", bit: 24)
```
## Config Files
`vm.apply_config(<configname>)`
You may load config files in TOML format.
Three example configs have been included with the package. Remember to save
current settings before loading a config. To set one you may do:
```ruby
require "voicemeeter"
vm = Voicemeeter.remote(:banana)
vm.run { vm.apply_config(:example) }
```
will load a config file at mydir/configs/banana/example.toml for Voicemeeter Banana.
## Events
By default, NO events listened for.
Use keyword args `pdirty`, `mdirty`, `midi`, `ldirty` to initialize event updates.
example:
```ruby
require 'voicemeeter'
# Set updates to occur every 50ms
# Listen for level updates
vm = Voicemeeter.remote('banana', ratelimit: 0.05, ldirty: true)
vm.run { ... }
```
#### `vm.register`|`vm.deregister`
Use the register/deregister methods to register/deregister callbacks and event observers.
example:
```ruby
# register an app to receive updates
class App():
def initialize(vm)
@vm = vm
@vm.register(method(:on_pdirty))
...
def on_pdirty
...
```
#### `vm.event`
Use the event class to toggle updates as necessary.
The following properties are available:
- `pdirty`: boolean
- `mdirty`: boolean
- `midi`: boolean
- `ldirty`: boolean
example:
```ruby
vm.event.ldirty = true
vm.event.pdirty = false
```
Or add, remove an array of events.
The following methods are available:
- `add(events)`
- `remove(events)`
- `get`
example:
```ruby
vm.event.add(%w[pdirty mdirty midi ldirty])
vm.event.remove(%w[pdirty mdirty midi ldirty])
# get a list of currently subscribed
p vm.event.get
```
## `Voicemeeter Module`
### Remote class
#### Voicemeeter.remote
You may pass the following optional keyword arguments:
- `sync`: boolean=false, force the getters to wait for dirty parameters to clear. For most cases leave this as false.
- `ratelimit`: float=0.033, how often to check for updates in ms.
- `pdirty`: boolean=true, parameter updates
- `mdirty`: boolean=true, macrobutton updates
- `midi`: boolean=true, midi updates
- `ldirty`: boolean=false, level updates
Access to lower level Getters and Setters are provided with these functions:
- `vm.get(param, string=false)`: For getting the value of any parameter. Set string to true if getting a property value expected to return a string.
- `vm.set(param, value)`: For setting the value of any parameter.
Access to lower level polling functions are provided with these functions:
- `vm.pdirty?`: Returns true iff a parameter has been updated.
- `vm.mdirty?`: Returns true iff a macrobutton has been updated.
example:
```ruby
vm.get("Strip[2].Mute")
vm.set("Strip[4].Label", "stripname")
vm.set("Strip[0].Gain", -3.6)
```
### Run tests
To run all tests:
```
Bundle exec rspec
```
You can use tags to run only certain tests, for example:
```
Bundle exec rspec --tag 'higher'
```
### Official Documentation
- [Voicemeeter Remote C API](https://github.com/onyx-and-iris/Voicemeeter-SDK/blob/main/VoicemeeterRemoteAPI.pdf)

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@ -15,13 +15,9 @@ module Voicemeeter
)
ffi_convention :stdcall
class << self
private
def self.attach_function(c_name, args, returns)
ruby_name = "bind_#{c_name.to_s.delete_prefix("VBVMR_").snakecase}".to_sym
super(ruby_name, c_name, args, returns)
end
def self.attach_function(c_name, args, returns)
ruby_name = "bind_#{c_name.to_s.delete_prefix("VBVMR_").snakecase}".to_sym
super(ruby_name, c_name, args, returns)
end
attach_function :VBVMR_Login, [], :long

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voicemeeter.gemspec
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@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
spec.add_runtime_dependency "easy_logging", "~> 0.4.0"
spec.add_development_dependency "rspec", "~> 3.4"
spec.add_development_dependency "standard", "~> 1.30"
spec.required_ruby_version = ">= 3.0"
spec.required_ruby_version = ">= 3.2"
spec.metadata = {
"source_code_uri" => "https://github.com/onyx-and-iris/voicemeeter-rb.git"
}