michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef AudioProcessingEvent_h_
michael@0: #define AudioProcessingEvent_h_
michael@0: 
michael@0: #include "AudioBuffer.h"
michael@0: #include "ScriptProcessorNode.h"
michael@0: #include "mozilla/dom/Event.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: class AudioProcessingEvent : public Event
michael@0: {
michael@0: public:
michael@0:   AudioProcessingEvent(ScriptProcessorNode* aOwner,
michael@0:                        nsPresContext* aPresContext,
michael@0:                        WidgetEvent* aEvent);
michael@0: 
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_FORWARD_TO_EVENT
michael@0:   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioProcessingEvent, Event)
michael@0: 
michael@0:   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
michael@0: 
michael@0:   void InitEvent(AudioBuffer* aInputBuffer,
michael@0:                  uint32_t aNumberOfInputChannels,
michael@0:                  double aPlaybackTime)
michael@0:   {
michael@0:     InitEvent(NS_LITERAL_STRING("audioprocess"), false, false);
michael@0:     mInputBuffer = aInputBuffer;
michael@0:     mNumberOfInputChannels = aNumberOfInputChannels;
michael@0:     mPlaybackTime = aPlaybackTime;
michael@0:   }
michael@0: 
michael@0:   double PlaybackTime() const
michael@0:   {
michael@0:     return mPlaybackTime;
michael@0:   }
michael@0: 
michael@0:   AudioBuffer* GetInputBuffer(ErrorResult& aRv)
michael@0:   {
michael@0:     if (!mInputBuffer) {
michael@0:       mInputBuffer = LazilyCreateBuffer(mNumberOfInputChannels, aRv);
michael@0:     }
michael@0:     return mInputBuffer;
michael@0:   }
michael@0: 
michael@0:   AudioBuffer* GetOutputBuffer(ErrorResult& aRv)
michael@0:   {
michael@0:     if (!mOutputBuffer) {
michael@0:       mOutputBuffer = LazilyCreateBuffer(mNode->NumberOfOutputChannels(), aRv);
michael@0:     }
michael@0:     return mOutputBuffer;
michael@0:   }
michael@0: 
michael@0:   bool HasOutputBuffer() const
michael@0:   {
michael@0:     return !!mOutputBuffer;
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   already_AddRefed<AudioBuffer>
michael@0:   LazilyCreateBuffer(uint32_t aNumberOfChannels, ErrorResult& rv);
michael@0: 
michael@0: private:
michael@0:   double mPlaybackTime;
michael@0:   nsRefPtr<AudioBuffer> mInputBuffer;
michael@0:   nsRefPtr<AudioBuffer> mOutputBuffer;
michael@0:   nsRefPtr<ScriptProcessorNode> mNode;
michael@0:   uint32_t mNumberOfInputChannels;
michael@0: };
michael@0: 
michael@0: }
michael@0: }
michael@0: 
michael@0: #endif
michael@0: