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-rw-r--r--dom/media/webaudio/AudioProcessingEvent.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/dom/media/webaudio/AudioProcessingEvent.h b/dom/media/webaudio/AudioProcessingEvent.h
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+++ b/dom/media/webaudio/AudioProcessingEvent.h
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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 AudioProcessingEvent_h_
+#define AudioProcessingEvent_h_
+
+#include "AudioBuffer.h"
+#include "ScriptProcessorNode.h"
+#include "mozilla/dom/Event.h"
+
+namespace mozilla::dom {
+
+class AudioProcessingEvent final : public Event {
+ public:
+ AudioProcessingEvent(ScriptProcessorNode* aOwner, nsPresContext* aPresContext,
+ WidgetEvent* aEvent);
+
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioProcessingEvent, Event)
+
+ 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; }
+
+ protected:
+ virtual ~AudioProcessingEvent();
+
+ private:
+ already_AddRefed<AudioBuffer> LazilyCreateBuffer(uint32_t aNumberOfChannels,
+ ErrorResult& rv);
+
+ private:
+ double mPlaybackTime;
+ RefPtr<AudioBuffer> mInputBuffer;
+ RefPtr<AudioBuffer> mOutputBuffer;
+ RefPtr<ScriptProcessorNode> mNode;
+ uint32_t mNumberOfInputChannels;
+};
+
+} // namespace mozilla::dom
+
+#endif