ConstantSourceNode.h (1855B)
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 ConstantSourceNode_h_ 8 #define ConstantSourceNode_h_ 9 10 #include "AudioParam.h" 11 #include "AudioScheduledSourceNode.h" 12 #include "mozilla/dom/ConstantSourceNodeBinding.h" 13 14 namespace mozilla::dom { 15 16 class AudioContext; 17 18 class ConstantSourceNode final : public AudioScheduledSourceNode, 19 public MainThreadMediaTrackListener { 20 public: 21 explicit ConstantSourceNode(AudioContext* aContext); 22 23 NS_DECL_ISUPPORTS_INHERITED 24 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ConstantSourceNode, 25 AudioScheduledSourceNode) 26 27 JSObject* WrapObject(JSContext* aCx, 28 JS::Handle<JSObject*> aGivenProto) override; 29 30 static already_AddRefed<ConstantSourceNode> Constructor( 31 const GlobalObject& aGlobal, AudioContext& aContext, 32 const ConstantSourceOptions& aOptions); 33 34 void DestroyMediaTrack() override; 35 36 uint16_t NumberOfInputs() const final { return 0; } 37 38 AudioParam* Offset() const { return mOffset; } 39 40 void Start(double aWhen, ErrorResult& rv) override; 41 void Stop(double aWhen, ErrorResult& rv) override; 42 43 void NotifyMainThreadTrackEnded() override; 44 45 const char* NodeType() const override { return "ConstantSourceNode"; } 46 47 size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override; 48 size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override; 49 50 protected: 51 virtual ~ConstantSourceNode(); 52 53 private: 54 RefPtr<AudioParam> mOffset; 55 bool mStartCalled; 56 }; 57 58 } // namespace mozilla::dom 59 60 #endif