dom/media/webaudio/IIRFilterNode.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef IIRFilterNode_h_
   8 #define IIRFilterNode_h_
   9
  10 #include "AudioNode.h"
  11 #include "AudioParam.h"
  12 #include "mozilla/dom/IIRFilterNodeBinding.h"
  13
  14 namespace mozilla::dom {
  15
  16 class AudioContext;
  17 struct IIRFilterOptions;
  18
  19 class IIRFilterNode final : public AudioNode {
  20  public:
  21   static already_AddRefed<IIRFilterNode> Create(
  22       AudioContext& aAudioContext, const IIRFilterOptions& aOptions,
  23       ErrorResult& aRv);
  24
  25   NS_INLINE_DECL_REFCOUNTING_INHERITED(IIRFilterNode, AudioNode)
  26
  27   static already_AddRefed<IIRFilterNode> Constructor(
  28       const GlobalObject& aGlobal, AudioContext& aAudioContext,
  29       const IIRFilterOptions& aOptions, ErrorResult& aRv) {
  30     return Create(aAudioContext, aOptions, aRv);
  31   }
  32
  33   JSObject* WrapObject(JSContext* aCx,
  34                        JS::Handle<JSObject*> aGivenProto) override;
  35
  36   void GetFrequencyResponse(const Float32Array& aFrequencyHz,
  37                             const Float32Array& aMagResponse,
  38                             const Float32Array& aPhaseResponse);
  39
  40   const char* NodeType() const override { return "IIRFilterNode"; }
  41
  42   size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
  43   size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
  44
  45  private:
  46   IIRFilterNode(AudioContext* aContext, const Sequence<double>& aFeedforward,
  47                 const Sequence<double>& aFeedback);
  48   ~IIRFilterNode() = default;
  49
  50   nsTArray<double> mFeedback;
  51   nsTArray<double> mFeedforward;
  52 };
  53
  54 }  // namespace mozilla::dom
  55
  56 #endif