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