зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
2.0 KiB
C++
83 строки
2.0 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 : public Event
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{
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public:
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AudioProcessingEvent(ScriptProcessorNode* aOwner,
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nsPresContext* aPresContext,
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WidgetEvent* aEvent);
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NS_DECL_ISUPPORTS_INHERITED
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NS_FORWARD_TO_EVENT
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioProcessingEvent, Event)
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virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
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void InitEvent(AudioBuffer* aInputBuffer,
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uint32_t aNumberOfInputChannels,
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double aPlaybackTime)
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{
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InitEvent(NS_LITERAL_STRING("audioprocess"), false, false);
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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
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{
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return mPlaybackTime;
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}
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AudioBuffer* InputBuffer()
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{
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if (!mInputBuffer) {
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LazilyCreateBuffer(mInputBuffer, mNumberOfInputChannels);
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}
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return mInputBuffer;
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}
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AudioBuffer* OutputBuffer()
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{
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if (!mOutputBuffer) {
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LazilyCreateBuffer(mOutputBuffer, mNode->NumberOfOutputChannels());
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}
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return mOutputBuffer;
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}
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bool HasOutputBuffer() const
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{
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return !!mOutputBuffer;
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}
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private:
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void LazilyCreateBuffer(nsRefPtr<AudioBuffer>& aBuffer,
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uint32_t aNumberOfChannels);
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private:
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double mPlaybackTime;
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nsRefPtr<AudioBuffer> mInputBuffer;
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nsRefPtr<AudioBuffer> mOutputBuffer;
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nsRefPtr<ScriptProcessorNode> mNode;
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uint32_t mNumberOfInputChannels;
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};
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}
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}
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#endif
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