dom/media/webaudio/WaveShaperNode.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 WaveShaperNode_h_
   8 #define WaveShaperNode_h_
   9
  10 #include "AudioNode.h"
  11 #include "mozilla/dom/WaveShaperNodeBinding.h"
  12 #include "mozilla/dom/TypedArray.h"
  13
  14 namespace mozilla::dom {
  15
  16 class AudioContext;
  17 struct WaveShaperOptions;
  18
  19 class WaveShaperNode final : public AudioNode {
  20  public:
  21   static already_AddRefed<WaveShaperNode> Create(
  22       AudioContext& aAudioContext, const WaveShaperOptions& aOptions,
  23       ErrorResult& aRv);
  24
  25   NS_DECL_ISUPPORTS_INHERITED
  26   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(WaveShaperNode,
  27                                                          AudioNode)
  28
  29   static already_AddRefed<WaveShaperNode> Constructor(
  30       const GlobalObject& aGlobal, AudioContext& aAudioContext,
  31       const WaveShaperOptions& aOptions, ErrorResult& aRv) {
  32     return Create(aAudioContext, aOptions, aRv);
  33   }
  34
  35   JSObject* WrapObject(JSContext* aCx,
  36                        JS::Handle<JSObject*> aGivenProto) override;
  37
  38   void GetCurve(JSContext* aCx, JS::MutableHandle<JSObject*> aRetval);
  39   void SetCurve(const Nullable<Float32Array>& aData, ErrorResult& aRv);
  40
  41   OverSampleType Oversample() const { return mType; }
  42   void SetOversample(OverSampleType aType);
  43
  44   size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override {
  45     // Possibly track in the future:
  46     // - mCurve
  47     return AudioNode::SizeOfExcludingThis(aMallocSizeOf);
  48   }
  49
  50   const char* NodeType() const override { return "WaveShaperNode"; }
  51
  52   size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override {
  53     return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
  54   }
  55
  56  private:
  57   explicit WaveShaperNode(AudioContext* aContext);
  58   ~WaveShaperNode() = default;
  59
  60   void SetCurveInternal(const nsTArray<float>& aCurve, ErrorResult& aRv);
  61   void CleanCurveInternal();
  62
  63   void SendCurveToTrack();
  64
  65   nsTArray<float> mCurve;
  66   OverSampleType mType;
  67 };
  68
  69 }  // namespace mozilla::dom
  70
  71 #endif