зеркало из https://github.com/mozilla/gecko-dev.git
75 строки
2.2 KiB
C++
75 строки
2.2 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 AudioProcessingEvent_h_
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#define AudioProcessingEvent_h_
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#include "AudioBuffer.h"
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#include "ScriptProcessorNode.h"
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#include "mozilla/dom/Event.h"
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namespace mozilla {
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namespace dom {
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class AudioProcessingEvent final : public Event {
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public:
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AudioProcessingEvent(ScriptProcessorNode* aOwner, nsPresContext* aPresContext,
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WidgetEvent* aEvent);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioProcessingEvent, Event)
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JSObject* WrapObjectInternal(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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using Event::InitEvent;
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void InitEvent(AudioBuffer* aInputBuffer, uint32_t aNumberOfInputChannels,
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double aPlaybackTime) {
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InitEvent(NS_LITERAL_STRING("audioprocess"), CanBubble::eNo,
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Cancelable::eNo);
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mInputBuffer = aInputBuffer;
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mNumberOfInputChannels = aNumberOfInputChannels;
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mPlaybackTime = aPlaybackTime;
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}
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double PlaybackTime() const { return mPlaybackTime; }
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AudioBuffer* GetInputBuffer(ErrorResult& aRv) {
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if (!mInputBuffer) {
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mInputBuffer = LazilyCreateBuffer(mNumberOfInputChannels, aRv);
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}
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return mInputBuffer;
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}
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AudioBuffer* GetOutputBuffer(ErrorResult& aRv) {
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if (!mOutputBuffer) {
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mOutputBuffer = LazilyCreateBuffer(mNode->NumberOfOutputChannels(), aRv);
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}
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return mOutputBuffer;
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}
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bool HasOutputBuffer() const { return !!mOutputBuffer; }
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protected:
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virtual ~AudioProcessingEvent();
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private:
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already_AddRefed<AudioBuffer> LazilyCreateBuffer(uint32_t aNumberOfChannels,
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ErrorResult& rv);
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private:
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double mPlaybackTime;
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RefPtr<AudioBuffer> mInputBuffer;
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RefPtr<AudioBuffer> mOutputBuffer;
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RefPtr<ScriptProcessorNode> mNode;
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uint32_t mNumberOfInputChannels;
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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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