{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE FlexibleContexts #-}
{- |
This module provides a type class that automatically selects a filter
for a given parameter type.
We choose the dependency this way
because there may be different ways to specify the filter parameters
but there is only one implementation of the filter itself.
-}
module Synthesizer.LLVM.CausalParameterized.Controlled (
   Ctrl.process,
   processCtrlRate,
   ) where

import qualified Synthesizer.LLVM.CausalParameterized.Process as CausalP
import qualified Synthesizer.LLVM.Causal.Controlled as Ctrl
import qualified Synthesizer.LLVM.Parameterized.Signal as SigP
import qualified Synthesizer.LLVM.Parameter as Param

import qualified LLVM.Extra.Memory as Memory
import qualified LLVM.Extra.ScalarOrVector as SoV
import LLVM.Extra.Class (MakeValueTuple, ValueTuple, )

import qualified LLVM.Core as LLVM
import LLVM.Core (Value, IsFloating, IsSized, )

import Foreign.Storable (Storable, )


processCtrlRate ::
   (Ctrl.C parameter a b,
    Memory.C parameter,
    Memory.FirstClass r, IsSized (Memory.Stored r),
    IsFloating r, Storable r, SoV.IntegerConstant r,
    MakeValueTuple r, ValueTuple r ~ (Value r),
    LLVM.CmpRet r, LLVM.CmpResult r ~ Bool) =>
   Param.T p r ->
   (Param.T p r -> SigP.T p parameter) ->
   CausalP.T p a b
processCtrlRate reduct ctrlGen =
   CausalP.applyFst Ctrl.process
      (SigP.interpolateConstant reduct (ctrlGen reduct))