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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 mozilla_dom_AudioWorkletGlobalScope_h
#define mozilla_dom_AudioWorkletGlobalScope_h
#include "mozilla/dom/AudioParamDescriptorMap.h"
#include "mozilla/dom/FunctionBinding.h"
#include "mozilla/dom/WorkletGlobalScope.h"
#include "js/ForOfIterator.h"
#include "nsRefPtrHashtable.h"
namespace mozilla {
class AudioWorkletImpl;
namespace dom {
class AudioWorkletProcessorConstructor;
class MessagePort;
class StructuredCloneHolder;
class UniqueMessagePortId;
class AudioWorkletGlobalScope final : public WorkletGlobalScope {
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioWorkletGlobalScope,
WorkletGlobalScope);
explicit AudioWorkletGlobalScope(AudioWorkletImpl* aImpl);
bool WrapGlobalObject(JSContext* aCx,
JS::MutableHandle<JSObject*> aReflector) override;
void RegisterProcessor(JSContext* aCx, const nsAString& aName,
AudioWorkletProcessorConstructor& aProcessorCtor,
ErrorResult& aRv);
AudioWorkletImpl* Impl() const;
uint64_t CurrentFrame() const;
double CurrentTime() const;
float SampleRate() const;
// If successful, returns true and sets aRetProcessor, which will be in the
// compartment for the realm of this global. Returns false on failure.
MOZ_CAN_RUN_SCRIPT
bool ConstructProcessor(JSContext* aCx, const nsAString& aName,
NotNull<StructuredCloneHolder*> aSerializedOptions,
UniqueMessagePortId& aPortIdentifier,
JS::MutableHandle<JSObject*> aRetProcessor);
// Returns null if not called during ConstructProcessor() or if the port has
// already been taken.
RefPtr<MessagePort> TakePortForProcessorCtor();
private:
~AudioWorkletGlobalScope() = default;
// Returns an AudioParamDescriptorMap filled with AudioParamDescriptor
// objects, extracted from JS. Returns an empty map in case of error and set
// aRv accordingly.
AudioParamDescriptorMap DescriptorsFromJS(JSContext* aCx,
JS::ForOfIterator* aIter,
ErrorResult& aRv);
typedef nsRefPtrHashtable<nsStringHashKey, AudioWorkletProcessorConstructor>
NodeNameToProcessorDefinitionMap;
NodeNameToProcessorDefinitionMap mNameToProcessorMap;
// https://webaudio.github.io/web-audio-api/#pending-processor-construction-data-transferred-port
// This does not need to be traversed during cycle-collection because it is
// only set while this AudioWorkletGlobalScope is on the stack.
RefPtr<MessagePort> mPortForProcessor;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_AudioWorkletGlobalScope_h
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