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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 */
#ifndef AudioProcessingEvent_h_
#define AudioProcessingEvent_h_
#include "AudioBuffer.h"
#include "ScriptProcessorNode.h"
#include "mozilla/dom/Event.h"
namespace mozilla::dom {
class AudioProcessingEvent final : public Event {
AudioProcessingEvent(ScriptProcessorNode* aOwner, nsPresContext* aPresContext,
WidgetEvent* aEvent);
JSObject* WrapObjectInternal(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
using Event::InitEvent;
void InitEvent(AudioBuffer* aInputBuffer, uint32_t aNumberOfInputChannels,
double aPlaybackTime) {
InitEvent(u"audioprocess"_ns, CanBubble::eNo, Cancelable::eNo);
mInputBuffer = aInputBuffer;
mNumberOfInputChannels = aNumberOfInputChannels;
mPlaybackTime = aPlaybackTime;
double PlaybackTime() const { return mPlaybackTime; }
AudioBuffer* GetInputBuffer(ErrorResult& aRv) {
if (!mInputBuffer) {
mInputBuffer = LazilyCreateBuffer(mNumberOfInputChannels, aRv);
return mInputBuffer;
AudioBuffer* GetOutputBuffer(ErrorResult& aRv) {
if (!mOutputBuffer) {
mOutputBuffer = LazilyCreateBuffer(mNode->NumberOfOutputChannels(), aRv);
return mOutputBuffer;
bool HasOutputBuffer() const { return !!mOutputBuffer; }
virtual ~AudioProcessingEvent();
already_AddRefed<AudioBuffer> LazilyCreateBuffer(uint32_t aNumberOfChannels,
ErrorResult& rv);
double mPlaybackTime;
RefPtr<AudioBuffer> mInputBuffer;
RefPtr<AudioBuffer> mOutputBuffer;
RefPtr<ScriptProcessorNode> mNode;
uint32_t mNumberOfInputChannels;
} // namespace mozilla::dom