de.sciss.fscape.UGen.scala Maven / Gradle / Ivy
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/*
* UGen.scala
* (FScape)
*
* Copyright (c) 2001-2016 Hanns Holger Rutz. All rights reserved.
*
* This software is published under the GNU General Public License v2+
*
*
* For further information, please contact Hanns Holger Rutz at
* [email protected]
*/
package de.sciss.fscape
import de.sciss.fscape.graph.{UGenInGroup, UGenOutProxy, UGenProxy}
import de.sciss.fscape.graph.impl.{MultiOutImpl, SingleOutImpl, ZeroOutImpl}
import scala.annotation.switch
import scala.collection.immutable.{IndexedSeq => Vec}
import scala.language.implicitConversions
/** A UGen during graph building process is a more
* rich thing than `RawUGen`: it implements equality
* based on `isIndividual` status and may be omitted
* from the final graph based on `hasSideEffect` status.
*/
sealed trait UGen extends Product {
// !!! WE CURRENTLY DISABLE STRUCTURAL EQUALITY
// // initialize this first, so that debug printing in `addUGen` can use the hash code
// override val hashCode: Int = if (isIndividual) super.hashCode() else scala.runtime.ScalaRunTime._hashCode(this)
override def toString: String = inputs.mkString(s"$name(", ", ", ")")
def name : String
def inputs : Vec[UGenIn]
/** Additional UGen arguments that are not of type `UGenIn`.
* These are included to achieve correct equality
* (also as we do not transcode unary/binary operator ids
* into special indices)
*/
protected def rest: Any
def numInputs : Int = inputs.size
def numOutputs: Int
// the full UGen spec:
// name, inputs
override final def productPrefix: String = "UGen"
final def productArity: Int = 3
final def productElement(n: Int): Any = (n: @switch) match {
case 0 => name
case 1 => inputs
case 2 => rest
case _ => throw new java.lang.IndexOutOfBoundsException(n.toString)
}
final def canEqual(x: Any): Boolean = x.isInstanceOf[UGen]
// !!! WE CURRENTLY DISABLE STRUCTURAL EQUALITY
// override def equals(x: Any): Boolean = (this eq x.asInstanceOf[AnyRef]) || (!isIndividual && (x match {
// case u: UGen =>
// u.name == name && u.inputs == inputs && u.rest == rest && u.canEqual(this)
// case _ => false
// }))
def isIndividual : Boolean
def hasSideEffect: Boolean
}
object UGen {
object SingleOut {
def apply(source: UGenSource.SingleOut, inputs: Vec[UGenIn], rest: Any = (), isIndividual: Boolean = false,
hasSideEffect: Boolean = false)(implicit b: UGenGraph.Builder): SingleOut = {
val res = new SingleOutImpl(source = source, inputs = inputs, rest = rest,
isIndividual = isIndividual, hasSideEffect = hasSideEffect)
b.addUGen(res)
res
}
}
/** A SingleOutUGen is a UGen which has exactly one output, and
* hence can directly function as input to another UGen without expansion.
*/
trait SingleOut extends UGenProxy with UGen {
final def numOutputs = 1
final def outputIndex = 0
final def ugen: UGen = this
def source: UGenSource.SingleOut
}
object ZeroOut {
def apply(source: UGenSource.ZeroOut, inputs: Vec[UGenIn], rest: Any = (), isIndividual: Boolean = false)
(implicit b: UGenGraph.Builder): ZeroOut = {
val res = new ZeroOutImpl(source = source, inputs = inputs, rest = rest, isIndividual = isIndividual)
b.addUGen(res)
res
}
}
trait ZeroOut extends UGen {
final def numOutputs = 0
final def hasSideEffect = true // implied by having no outputs
def source: UGenSource.ZeroOut
}
object MultiOut {
def apply(source: UGenSource.MultiOut, inputs: Vec[UGenIn], numOutputs: Int,
rest: Any = (), isIndividual: Boolean = false, hasSideEffect: Boolean = false)
(implicit b: UGenGraph.Builder): MultiOut = {
val res = new MultiOutImpl(source = source, numOutputs = numOutputs, inputs = inputs,
rest = rest, isIndividual = isIndividual,
hasSideEffect = hasSideEffect)
b.addUGen(res)
res
}
}
/** A class for UGens with multiple outputs. */
trait MultiOut extends UGenInGroup with UGen {
final def unwrap(i: Int): UGenInLike = UGenOutProxy(this, i % numOutputs)
def outputs: Vec[UGenIn] = Vector.tabulate(numOutputs)(ch => UGenOutProxy(this, ch))
def source: UGenSource.MultiOut
private[fscape] final def unbubble: UGenInLike = if (numOutputs == 1) outputs(0) else this
}
}
object UGenInLike {
implicit def expand(ge: GE)(implicit b: UGenGraph.Builder): UGenInLike = ge.expand
}
sealed trait UGenInLike extends GE {
private[fscape] def outputs: Vec[UGenInLike]
private[fscape] def unbubble: UGenInLike
/** Returns the UGenInLike element of index i
* regarding the ungrouped representation. Note
* that for efficiency reasons this method will
* automatically wrap the index around numElements!
*/
private[fscape] def unwrap(i: Int): UGenInLike
private[fscape] def flatOutputs: Vec[UGenIn]
// ---- GE ----
final private[fscape] def expand(implicit b: UGenGraph.Builder): UGenInLike = this
}
/** An element that can be used as an input to a UGen.
* This is after multi-channel-expansion, hence implementing
* classes are SingleOutUGen, UGenOutProxy, ControlOutProxy, and Constant.
*/
sealed trait UGenIn extends UGenInLike {
private[fscape] def outputs: Vec[UGenIn] = Vector(this)
private[fscape] final def unwrap(i: Int): UGenInLike = this
// don't bother about the index
private[fscape] final def flatOutputs: Vec[UGenIn] = Vector(this)
private[fscape] final def unbubble : UGenInLike = this
}
package graph {
import akka.stream.{Outlet, scaladsl}
import de.sciss.fscape.stream.{BufD, BufI, BufL, BufLike, OutD, OutI, OutL, StreamIn}
object UGenInGroup {
private final val emptyVal = Apply(Vector.empty)
def empty: UGenInGroup = emptyVal
def apply(xs: Vec[UGenInLike]): UGenInGroup = Apply(xs)
private final case class Apply(outputs: Vec[UGenInLike]) extends UGenInGroup {
override def productPrefix = "UGenInGroup"
private[fscape] def numOutputs: Int = outputs.size
private[fscape] def unwrap(i: Int): UGenInLike = outputs(i % outputs.size)
private[fscape] def unbubble: UGenInLike = this
override def toString = outputs.mkString("UGenInGroup(", ",", ")")
}
}
sealed trait UGenInGroup extends UGenInLike {
private[fscape] def outputs: Vec[UGenInLike]
private[fscape] def numOutputs: Int
private[fscape] final def flatOutputs: Vec[UGenIn] = outputs.flatMap(_.flatOutputs)
}
sealed trait UGenProxy extends UGenIn {
def ugen: UGen
def outputIndex: Int
}
object Constant {
def unapply(c: Constant): Option[Double] = Some(c.doubleValue)
}
/** A scalar constant used as an input to a UGen. */
sealed trait Constant extends UGenIn with StreamIn {
def doubleValue : Double
def intValue : Int
def longValue : Long
def value: Any
def toDouble(implicit b: stream.Builder): OutD = b.add(scaladsl.Source.single(BufD(doubleValue))).out
def toInt (implicit b: stream.Builder): OutI = b.add(scaladsl.Source.single(BufI(intValue ))).out
def toLong (implicit b: stream.Builder): OutL = b.add(scaladsl.Source.single(BufL(longValue ))).out
}
object ConstantI {
final val C0 = new ConstantI(0)
final val C1 = new ConstantI(1)
final val Cm1 = new ConstantI(-1)
}
final case class ConstantI(value: Int) extends Constant with StreamIn.IntLike {
def doubleValue: Double = value.toDouble
def intValue : Int = value
def longValue : Long = value.toLong
override def toString = value.toString
}
object ConstantD {
final val C0 = new ConstantD(0)
final val C1 = new ConstantD(1)
final val Cm1 = new ConstantD(-1)
}
final case class ConstantD(value: Double) extends Constant with StreamIn.DoubleLike {
def doubleValue: Double = value
def intValue : Int = {
if (value.isNaN) throw new ArithmeticException("NaN cannot be translated to Int")
val r = math.rint(value)
if (r < Int.MinValue || r > Int.MaxValue)
throw new ArithmeticException(s"Double $value exceeds Int range")
r.toInt
}
def longValue : Long = {
if (value.isNaN) throw new ArithmeticException("NaN cannot be translated to Long")
val r = math.round(value)
r
}
override def toString = value.toString
}
object ConstantL {
final val C0 = new ConstantI(0)
final val C1 = new ConstantI(1)
final val Cm1 = new ConstantI(-1)
}
final case class ConstantL(value: Long) extends Constant with StreamIn.LongLike {
def doubleValue: Double = value.toDouble
def intValue : Int = {
val res = value.toInt
if (res != value) throw new ArithmeticException(s"Long $value exceeds Int range")
res
}
def longValue : Long = value
override def toString = value.toString
}
/** A UGenOutProxy refers to a particular output of a multi-channel UGen.
* A sequence of these form the representation of a multi-channel-expanded
* UGen.
*/
final case class UGenOutProxy(ugen: UGen.MultiOut, outputIndex: Int)
extends UGenIn with UGenProxy {
override def toString =
if (ugen.numOutputs == 1) ugen.toString else s"$ugen.\\($outputIndex)"
}
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