Class: Scruby::Server

Inherits:
Object show all
Defined in:
lib/scruby/server.rb

Constant Summary collapse

DEFAULTS = 
{ :buffers => 1024, :control_buses => 4096, :audio_buses => 128, :audio_outputs => 8, :audio_inputs => 8, 
:host => 'localhost', :port => 57111, :path => '/Applications/SuperCollider/scsynth'
}
@@servers = 
[]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Server

Initializes and registers a new Server instance and sets the host and port for it. The server is a Ruby representation of scsynth which can be a local binary or a remote

server already running. Server class keeps an array with all the instantiated servers

Options:
  +host+: 
    defaults to 'localhost'
  +port+:
    TCP port defaults to 57111
  +control_buses+
    Number of buses for routing control data defaults to 4096, indices start at 0.
  +audio_buses+
    Number of audio Bus channels for hardware output and input and internal routing, defaults to 128
  +audio_outputs+
    Reserved +buses+ for hardware output, indices available are 0 to +audio_outputs+ - 1 defaults to 8.
  +audio_inputs+
    Reserved +buses+ for hardware input, +audio_outputs+ to (+audio_outputs+ + +audio_inputs+ - 1), defaults to 8.
  +buffers+
    Number of available sample buffers defaults to 1024



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# File 'lib/scruby/server.rb', line 47

def initialize opts = {}
  @opts          = DEFAULTS.dup.merge opts
  @buffers       = []
  @control_buses = []
  @audio_buses   = []
  @client        = Client.new port, host
  Bus.audio self, @opts[:audio_outputs] # register hardware buses
  Bus.audio self, @opts[:audio_inputs]
  self.class.all << self
end

Instance Attribute Details

#audio_buses ⇒ Object (readonly)

Returns the value of attribute audio_buses.



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# File 'lib/scruby/server.rb', line 23

def audio_buses
  @audio_buses
end

#buffers ⇒ Object (readonly)

Returns the value of attribute buffers.



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# File 'lib/scruby/server.rb', line 23

def buffers
  @buffers
end

#control_buses ⇒ Object (readonly)

Returns the value of attribute control_buses.



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# File 'lib/scruby/server.rb', line 23

def control_buses
  @control_buses
end

#host ⇒ Object (readonly)

Returns the value of attribute host.



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# File 'lib/scruby/server.rb', line 23

def host
  @host
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/scruby/server.rb', line 23

def path
  @path
end

#port ⇒ Object (readonly)

Returns the value of attribute port.



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# File 'lib/scruby/server.rb', line 23

def port
  @port
end

Class Method Details

.[](index) ⇒ Object

Return a server corresponding to the specified index of the registered servers array



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# File 'lib/scruby/server.rb', line 168

def [] index
  @@servers[index]
end

.[]=(index) ⇒ Object

Set a server to the specified index of the registered servers array



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# File 'lib/scruby/server.rb', line 173

def []= index
  @@servers[index]
  @@servers.uniq!
end

.all ⇒ Object

Returns an array with all the registered servers



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# File 'lib/scruby/server.rb', line 158

def all
  @@servers
end

.clear ⇒ Object

Clear the servers array



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# File 'lib/scruby/server.rb', line 163

def clear
  @@servers.clear
end

Instance Method Details

#allocate(kind, *elements) ⇒ Object

Allocates either buffer or bus indices, should be consecutive



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# File 'lib/scruby/server.rb', line 124

def allocate kind, *elements
  collection = instance_variable_get "@#{kind}"
  elements.flatten!

  max_size = @opts[kind]
  if collection.compact.size + elements.size > max_size
    raise SCError, "No more indices available -- free some #{ kind } before allocating more."
  end

  return collection.concat(elements) unless collection.index nil # just concat arrays if no nil item

  indices = []
  collection.each_with_index do |item, index| # find n number of consecutive nil indices
    break if indices.size >= elements.size
    if item.nil?
      indices << index
    else
      indices.clear
    end
  end

  case 
  when indices.size >= elements.size
    collection[indices.first, elements.size] = elements
  when collection.size + elements.size <= max_size
    collection.concat elements
  else
    raise SCError, "No block of #{ elements.size } consecutive #{ kind } indices is available."
  end
end

#boot ⇒ Object

Boots the local binary of the scsynth forking a process, it will rise a SCError if the scsynth binary is not found in /Applications/SuperCollider/scsynth (default Mac OS path) or given path. The default path can be overriden using Server.scsynt_path=(‘path’)

Raises:



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# File 'lib/scruby/server.rb', line 65

def boot
  raise SCError.new('Scsynth not found in the given path') unless File.exists? path
  if running?
    warn "Server on port #{ port } allready running"
    return self 
  end

  ready   = false
  timeout = Time.now + 2
  @thread = Thread.new do
    IO.popen "cd #{ File.dirname path }; ./#{ File.basename path } -u #{ port }" do |pipe|
      loop do 
        if response = pipe.gets
          puts response
          ready = true if response.match /ready/
        end
      end
    end
  end
  sleep 0.01 until ready or !@thread.alive? or Time.now > timeout
  sleep 0.01        # just to be shure
  send "/g_new", 1  # default group
  self   
end

#quit ⇒ Object

Sends the /quit OSC signal to the scsynth



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# File 'lib/scruby/server.rb', line 102

def quit
  Server.all.delete self
  send '/quit'
end

#running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scruby/server.rb', line 90

def running?
  @thread and @thread.alive? ? true : false
end

#send(message, *args) ⇒ Object

Sends an OSC command or Message to the scsyth server. E.g. server.send(‘/dumpOSC’, 1)



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# File 'lib/scruby/server.rb', line 109

def send message, *args
  message = Message.new message, *args unless Message === message or Bundle === message
  @client.send message
end

#send_bundle(timestamp = nil, *messages) ⇒ Object 



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# File 'lib/scruby/server.rb', line 114

def send_bundle timestamp = nil, *messages
  send Bundle.new( timestamp, *messages.map{ |message| Message.new *message  } )
end

#send_synth_def(synth_def) ⇒ Object

Encodes and sends a SynthDef to the scsynth server



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# File 'lib/scruby/server.rb', line 119

def send_synth_def synth_def
  send Bundle.new( nil, Message.new('/d_recv', Blob.new(synth_def.encode), 0) )
end

#stop ⇒ Object Also known as: panic 



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# File 'lib/scruby/server.rb', line 94

def stop
  send "/g_freeAll", 0
  send "/clearSched"
  send "/g_new", 1
end