mirror of
https://github.com/classilla/tenfourfox.git
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230 lines
6.3 KiB
C++
230 lines
6.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef AudioParam_h_
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#define AudioParam_h_
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#include "AudioParamTimeline.h"
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#include "nsWrapperCache.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsAutoPtr.h"
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#include "AudioNode.h"
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#include "mozilla/dom/TypedArray.h"
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#include "WebAudioUtils.h"
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#include "js/TypeDecls.h"
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namespace mozilla {
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namespace dom {
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class AudioParam final : public nsWrapperCache,
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public AudioParamTimeline
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{
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virtual ~AudioParam();
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public:
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AudioParam(AudioNode* aNode,
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uint32_t aIndex,
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float aDefaultValue,
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const char* aName);
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NS_IMETHOD_(MozExternalRefCountType) AddRef(void);
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NS_IMETHOD_(MozExternalRefCountType) Release(void);
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(AudioParam)
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AudioContext* GetParentObject() const
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{
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return mNode->Context();
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}
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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// We override SetValueCurveAtTime to convert the Float32Array to the wrapper
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// object.
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void SetValueCurveAtTime(const Float32Array& aValues, double aStartTime, double aDuration, ErrorResult& aRv)
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{
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if (!WebAudioUtils::IsTimeValid(aStartTime)) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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aValues.ComputeLengthAndData();
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EventInsertionHelper(aRv, AudioTimelineEvent::SetValueCurve,
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aStartTime, 0.0f, 0.0f, aDuration, aValues.Data(),
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aValues.Length());
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}
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void SetValue(float aValue)
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{
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AudioTimelineEvent event(AudioTimelineEvent::SetValue, 0.0f, aValue);
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ErrorResult rv;
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if (!ValidateEvent(event, rv)) {
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MOZ_ASSERT(false, "This should not happen, "
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"setting the value should always work");
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return;
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}
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AudioParamTimeline::SetValue(aValue);
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SendEventToEngine(event);
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}
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void SetValueAtTime(float aValue, double aStartTime, ErrorResult& aRv)
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{
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if (!WebAudioUtils::IsTimeValid(aStartTime)) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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EventInsertionHelper(aRv, AudioTimelineEvent::SetValueAtTime,
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aStartTime, aValue);
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}
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void LinearRampToValueAtTime(float aValue, double aEndTime, ErrorResult& aRv)
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{
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if (!WebAudioUtils::IsTimeValid(aEndTime)) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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EventInsertionHelper(aRv, AudioTimelineEvent::LinearRamp, aEndTime, aValue);
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}
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void ExponentialRampToValueAtTime(float aValue, double aEndTime, ErrorResult& aRv)
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{
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if (!WebAudioUtils::IsTimeValid(aEndTime)) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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EventInsertionHelper(aRv, AudioTimelineEvent::ExponentialRamp,
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aEndTime, aValue);
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}
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void SetTargetAtTime(float aTarget, double aStartTime,
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double aTimeConstant, ErrorResult& aRv)
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{
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if (!WebAudioUtils::IsTimeValid(aStartTime) ||
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!WebAudioUtils::IsTimeValid(aTimeConstant)) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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EventInsertionHelper(aRv, AudioTimelineEvent::SetTarget,
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aStartTime, aTarget,
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aTimeConstant);
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}
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void CancelScheduledValues(double aStartTime, ErrorResult& aRv)
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{
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if (!WebAudioUtils::IsTimeValid(aStartTime)) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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// Remove some events on the main thread copy.
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AudioEventTimeline::CancelScheduledValues(aStartTime);
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AudioTimelineEvent event(AudioTimelineEvent::Cancel, aStartTime, 0.0f);
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SendEventToEngine(event);
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}
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uint32_t ParentNodeId()
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{
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return mNode->Id();
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}
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void GetName(nsAString& aName)
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{
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aName.AssignASCII(mName);
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}
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float DefaultValue() const
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{
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return mDefaultValue;
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}
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const nsTArray<AudioNode::InputNode>& InputNodes() const
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{
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return mInputNodes;
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}
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void RemoveInputNode(uint32_t aIndex)
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{
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mInputNodes.RemoveElementAt(aIndex);
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}
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AudioNode::InputNode* AppendInputNode()
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{
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return mInputNodes.AppendElement();
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}
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// May create the stream if it doesn't exist
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MediaStream* Stream();
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virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override
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{
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size_t amount = AudioParamTimeline::SizeOfExcludingThis(aMallocSizeOf);
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// Not owned:
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// - mNode
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// Just count the array, actual nodes are counted in mNode.
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amount += mInputNodes.ShallowSizeOfExcludingThis(aMallocSizeOf);
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if (mNodeStreamPort) {
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amount += mNodeStreamPort->SizeOfIncludingThis(aMallocSizeOf);
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}
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return amount;
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}
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virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override
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{
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return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
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}
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private:
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void EventInsertionHelper(ErrorResult& aRv,
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AudioTimelineEvent::Type aType,
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double aTime, float aValue,
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double aTimeConstant = 0.0,
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float aDuration = 0.0,
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const float* aCurve = nullptr,
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uint32_t aCurveLength = 0)
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{
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AudioTimelineEvent event(aType, aTime, aValue,
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aTimeConstant, aDuration, aCurve, aCurveLength);
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if (!ValidateEvent(event, aRv)) {
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return;
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}
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AudioEventTimeline::InsertEvent<double>(event);
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SendEventToEngine(event);
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}
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void SendEventToEngine(const AudioTimelineEvent& aEvent);
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void DisconnectFromGraphAndDestroyStream();
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nsCycleCollectingAutoRefCnt mRefCnt;
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NS_DECL_OWNINGTHREAD
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RefPtr<AudioNode> mNode;
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// For every InputNode, there is a corresponding entry in mOutputParams of the
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// InputNode's mInputNode.
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nsTArray<AudioNode::InputNode> mInputNodes;
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const char* mName;
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// The input port used to connect the AudioParam's stream to its node's stream
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RefPtr<MediaInputPort> mNodeStreamPort;
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const uint32_t mIndex;
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const float mDefaultValue;
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};
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} // namespace dom
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} // namespace mozilla
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#endif
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