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 DynamicsCompressorNode_h_
8 #define DynamicsCompressorNode_h_
9 
10 #include "AudioNode.h"
11 #include "AudioParam.h"
12 
13 namespace mozilla {
14 namespace dom {
15 
16 class AudioContext;
17 struct DynamicsCompressorOptions;
18 
19 class DynamicsCompressorNode final : public AudioNode {
20  public:
21   static already_AddRefed<DynamicsCompressorNode> Create(
22       AudioContext& aAudioContext, const DynamicsCompressorOptions& aOptions,
23       ErrorResult& aRv);
24 
25   NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DynamicsCompressorNode,AudioNode)26   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DynamicsCompressorNode, AudioNode)
27 
28   static already_AddRefed<DynamicsCompressorNode> Constructor(
29       const GlobalObject& aGlobal, AudioContext& aAudioContext,
30       const DynamicsCompressorOptions& aOptions, ErrorResult& aRv) {
31     return Create(aAudioContext, aOptions, aRv);
32   }
33 
34   JSObject* WrapObject(JSContext* aCx,
35                        JS::Handle<JSObject*> aGivenProto) override;
36 
Threshold()37   AudioParam* Threshold() const { return mThreshold; }
38 
Knee()39   AudioParam* Knee() const { return mKnee; }
40 
Ratio()41   AudioParam* Ratio() const { return mRatio; }
42 
Attack()43   AudioParam* Attack() const { return mAttack; }
44 
45   // Called GetRelease to prevent clashing with the nsISupports::Release name
GetRelease()46   AudioParam* GetRelease() const { return mRelease; }
47 
Reduction()48   float Reduction() const { return mReduction; }
49 
NodeType()50   const char* NodeType() const override { return "DynamicsCompressorNode"; }
51 
52   size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
53   size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
54 
SetReduction(float aReduction)55   void SetReduction(float aReduction) {
56     MOZ_ASSERT(NS_IsMainThread());
57     mReduction = aReduction;
58   }
59 
SetChannelCountModeValue(ChannelCountMode aMode,ErrorResult & aRv)60   void SetChannelCountModeValue(ChannelCountMode aMode,
61                                 ErrorResult& aRv) override {
62     if (aMode == ChannelCountMode::Max) {
63       aRv.ThrowNotSupportedError("Cannot set channel count mode to \"max\"");
64       return;
65     }
66     AudioNode::SetChannelCountModeValue(aMode, aRv);
67   }
68 
SetChannelCount(uint32_t aChannelCount,ErrorResult & aRv)69   void SetChannelCount(uint32_t aChannelCount, ErrorResult& aRv) override {
70     if (aChannelCount > 2) {
71       aRv.ThrowNotSupportedError(
72           nsPrintfCString("%u is greater than 2", aChannelCount));
73       return;
74     }
75     AudioNode::SetChannelCount(aChannelCount, aRv);
76   }
77 
78  private:
79   explicit DynamicsCompressorNode(AudioContext* aContext);
80   ~DynamicsCompressorNode() = default;
81 
82   RefPtr<AudioParam> mThreshold;
83   RefPtr<AudioParam> mKnee;
84   RefPtr<AudioParam> mRatio;
85   float mReduction;
86   RefPtr<AudioParam> mAttack;
87   RefPtr<AudioParam> mRelease;
88 };
89 
90 }  // namespace dom
91 }  // namespace mozilla
92 
93 #endif
94