dom/media/webaudio/GainNode.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 GainNode_h_
   8 #define GainNode_h_
   9
  10 #include "AudioNode.h"
  11 #include "AudioParam.h"
  12
  13 namespace mozilla::dom {
  14
  15 class AudioContext;
  16 struct GainOptions;
  17
  18 class GainNode final : public AudioNode {
  19  public:
  20   static already_AddRefed<GainNode> Create(AudioContext& aAudioContext,
  21                                            const GainOptions& aOptions,
  22                                            ErrorResult& aRv);
  23
  24   NS_DECL_ISUPPORTS_INHERITED
  25   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(GainNode, AudioNode)
  26
  27   static already_AddRefed<GainNode> Constructor(const GlobalObject& aGlobal,
  28                                                 AudioContext& aAudioContext,
  29                                                 const GainOptions& aOptions,
  30                                                 ErrorResult& aRv) {
  31     return Create(aAudioContext, aOptions, aRv);
  32   }
  33
  34   JSObject* WrapObject(JSContext* aCx,
  35                        JS::Handle<JSObject*> aGivenProto) override;
  36
  37   AudioParam* Gain() const { return mGain; }
  38
  39   const char* NodeType() const override { return "GainNode"; }
  40
  41   size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
  42   size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
  43
  44  private:
  45   explicit GainNode(AudioContext* aContext);
  46   ~GainNode() = default;
  47
  48   RefPtr<AudioParam> mGain;
  49 };
  50
  51 }  // namespace mozilla::dom
  52
  53 #endif