The Tor Browser / annotate

content/media/webaudio/AudioParam.h@6474c204b198 (annotated)

content/media/webaudio/AudioParam.h

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0 3 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 6
michael@0 7 #ifndef AudioParam_h_
michael@0 8 #define AudioParam_h_
michael@0 9
michael@0 10 #include "AudioParamTimeline.h"
michael@0 11 #include "nsWrapperCache.h"
michael@0 12 #include "nsCycleCollectionParticipant.h"
michael@0 13 #include "nsAutoPtr.h"
michael@0 14 #include "AudioNode.h"
michael@0 15 #include "mozilla/dom/TypedArray.h"
michael@0 16 #include "WebAudioUtils.h"
michael@0 17 #include "js/TypeDecls.h"
michael@0 18
michael@0 19 namespace mozilla {
michael@0 20
michael@0 21 namespace dom {
michael@0 22
michael@0 23 class AudioParam MOZ_FINAL : public nsWrapperCache,
michael@0 24 public AudioParamTimeline
michael@0 25 {
michael@0 26 public:
michael@0 27 typedef void (*CallbackType)(AudioNode*);
michael@0 28
michael@0 29 AudioParam(AudioNode* aNode,
michael@0 30 CallbackType aCallback,
michael@0 31 float aDefaultValue);
michael@0 32 virtual ~AudioParam();
michael@0 33
michael@0 34 NS_IMETHOD_(MozExternalRefCountType) AddRef(void);
michael@0 35 NS_IMETHOD_(MozExternalRefCountType) Release(void);
michael@0 36 NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(AudioParam)
michael@0 37
michael@0 38 AudioContext* GetParentObject() const
michael@0 39 {
michael@0 40 return mNode->Context();
michael@0 41 }
michael@0 42
michael@0 43 double DOMTimeToStreamTime(double aTime) const
michael@0 44 {
michael@0 45 return mNode->Context()->DOMTimeToStreamTime(aTime);
michael@0 46 }
michael@0 47
michael@0 48 virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
michael@0 49
michael@0 50 // We override SetValueCurveAtTime to convert the Float32Array to the wrapper
michael@0 51 // object.
michael@0 52 void SetValueCurveAtTime(const Float32Array& aValues, double aStartTime, double aDuration, ErrorResult& aRv)
michael@0 53 {
michael@0 54 if (!WebAudioUtils::IsTimeValid(aStartTime)) {
michael@0 55 aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
michael@0 56 return;
michael@0 57 }
michael@0 58 aValues.ComputeLengthAndData();
michael@0 59 AudioParamTimeline::SetValueCurveAtTime(aValues.Data(), aValues.Length(),
michael@0 60 DOMTimeToStreamTime(aStartTime), aDuration, aRv);
michael@0 61 mCallback(mNode);
michael@0 62 }
michael@0 63
michael@0 64 // We override the rest of the mutating AudioParamTimeline methods in order to make
michael@0 65 // sure that the callback is called every time that this object gets mutated.
michael@0 66 void SetValue(float aValue)
michael@0 67 {
michael@0 68 // Optimize away setting the same value on an AudioParam
michael@0 69 if (HasSimpleValue() &&
michael@0 70 WebAudioUtils::FuzzyEqual(GetValue(), aValue)) {
michael@0 71 return;
michael@0 72 }
michael@0 73 AudioParamTimeline::SetValue(aValue);
michael@0 74 mCallback(mNode);
michael@0 75 }
michael@0 76 void SetValueAtTime(float aValue, double aStartTime, ErrorResult& aRv)
michael@0 77 {
michael@0 78 if (!WebAudioUtils::IsTimeValid(aStartTime)) {
michael@0 79 aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
michael@0 80 return;
michael@0 81 }
michael@0 82 AudioParamTimeline::SetValueAtTime(aValue, DOMTimeToStreamTime(aStartTime), aRv);
michael@0 83 mCallback(mNode);
michael@0 84 }
michael@0 85 void LinearRampToValueAtTime(float aValue, double aEndTime, ErrorResult& aRv)
michael@0 86 {
michael@0 87 if (!WebAudioUtils::IsTimeValid(aEndTime)) {
michael@0 88 aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
michael@0 89 return;
michael@0 90 }
michael@0 91 AudioParamTimeline::LinearRampToValueAtTime(aValue, DOMTimeToStreamTime(aEndTime), aRv);
michael@0 92 mCallback(mNode);
michael@0 93 }
michael@0 94 void ExponentialRampToValueAtTime(float aValue, double aEndTime, ErrorResult& aRv)
michael@0 95 {
michael@0 96 if (!WebAudioUtils::IsTimeValid(aEndTime)) {
michael@0 97 aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
michael@0 98 return;
michael@0 99 }
michael@0 100 AudioParamTimeline::ExponentialRampToValueAtTime(aValue, DOMTimeToStreamTime(aEndTime), aRv);
michael@0 101 mCallback(mNode);
michael@0 102 }
michael@0 103 void SetTargetAtTime(float aTarget, double aStartTime, double aTimeConstant, ErrorResult& aRv)
michael@0 104 {
michael@0 105 if (!WebAudioUtils::IsTimeValid(aStartTime) ||
michael@0 106 !WebAudioUtils::IsTimeValid(aTimeConstant)) {
michael@0 107 aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
michael@0 108 return;
michael@0 109 }
michael@0 110 AudioParamTimeline::SetTargetAtTime(aTarget, DOMTimeToStreamTime(aStartTime), aTimeConstant, aRv);
michael@0 111 mCallback(mNode);
michael@0 112 }
michael@0 113 void CancelScheduledValues(double aStartTime, ErrorResult& aRv)
michael@0 114 {
michael@0 115 if (!WebAudioUtils::IsTimeValid(aStartTime)) {
michael@0 116 aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
michael@0 117 return;
michael@0 118 }
michael@0 119 AudioParamTimeline::CancelScheduledValues(DOMTimeToStreamTime(aStartTime));
michael@0 120 mCallback(mNode);
michael@0 121 }
michael@0 122
michael@0 123 float DefaultValue() const
michael@0 124 {
michael@0 125 return mDefaultValue;
michael@0 126 }
michael@0 127
michael@0 128 AudioNode* Node() const
michael@0 129 {
michael@0 130 return mNode;
michael@0 131 }
michael@0 132
michael@0 133 const nsTArray<AudioNode::InputNode>& InputNodes() const
michael@0 134 {
michael@0 135 return mInputNodes;
michael@0 136 }
michael@0 137
michael@0 138 void RemoveInputNode(uint32_t aIndex)
michael@0 139 {
michael@0 140 mInputNodes.RemoveElementAt(aIndex);
michael@0 141 }
michael@0 142
michael@0 143 AudioNode::InputNode* AppendInputNode()
michael@0 144 {
michael@0 145 return mInputNodes.AppendElement();
michael@0 146 }
michael@0 147
michael@0 148 void DisconnectFromGraphAndDestroyStream();
michael@0 149
michael@0 150 // May create the stream if it doesn't exist
michael@0 151 MediaStream* Stream();
michael@0 152
michael@0 153 virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE
michael@0 154 {
michael@0 155 size_t amount = AudioParamTimeline::SizeOfExcludingThis(aMallocSizeOf);
michael@0 156 // Not owned:
michael@0 157 // - mNode
michael@0 158
michael@0 159 // Just count the array, actual nodes are counted in mNode.
michael@0 160 amount += mInputNodes.SizeOfExcludingThis(aMallocSizeOf);
michael@0 161
michael@0 162 if (mNodeStreamPort) {
michael@0 163 amount += mNodeStreamPort->SizeOfIncludingThis(aMallocSizeOf);
michael@0 164 }
michael@0 165
michael@0 166 return amount;
michael@0 167 }
michael@0 168
michael@0 169 virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE
michael@0 170 {
michael@0 171 return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
michael@0 172 }
michael@0 173
michael@0 174 protected:
michael@0 175 nsCycleCollectingAutoRefCnt mRefCnt;
michael@0 176 NS_DECL_OWNINGTHREAD
michael@0 177
michael@0 178 private:
michael@0 179 nsRefPtr<AudioNode> mNode;
michael@0 180 // For every InputNode, there is a corresponding entry in mOutputParams of the
michael@0 181 // InputNode's mInputNode.
michael@0 182 nsTArray<AudioNode::InputNode> mInputNodes;
michael@0 183 CallbackType mCallback;
michael@0 184 const float mDefaultValue;
michael@0 185 // The input port used to connect the AudioParam's stream to its node's stream
michael@0 186 nsRefPtr<MediaInputPort> mNodeStreamPort;
michael@0 187 };
michael@0 188
michael@0 189 }
michael@0 190 }
michael@0 191
michael@0 192 #endif
michael@0 193

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