mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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134 lines
3.1 KiB
C++
134 lines
3.1 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 AudioNode_h_
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#define AudioNode_h_
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#include "nsWrapperCache.h"
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#include "nsCycleCollectionParticipant.h"
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#include "mozilla/Attributes.h"
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#include "EnableWebAudioCheck.h"
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#include "nsAutoPtr.h"
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#include "nsTArray.h"
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#include "AudioContext.h"
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struct JSContext;
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class AudioNode : public nsISupports,
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public nsWrapperCache,
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public EnableWebAudioCheck
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{
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public:
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explicit AudioNode(AudioContext* aContext);
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virtual ~AudioNode() {}
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(AudioNode)
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AudioContext* GetParentObject() const
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{
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return mContext;
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}
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AudioContext* Context() const
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{
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return mContext;
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}
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void Connect(AudioNode& aDestination, uint32_t aOutput,
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uint32_t aInput, ErrorResult& aRv);
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void Disconnect(uint32_t aOutput, ErrorResult& aRv);
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uint32_t NumberOfInputs() const
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{
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return mInputs.Length();
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}
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uint32_t NumberOfOutputs() const
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{
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return mOutputs.Length();
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}
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// The following two virtual methods must be implemented by each node type
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// to provide the maximum number of input and outputs they accept.
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virtual uint32_t MaxNumberOfInputs() const = 0;
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virtual uint32_t MaxNumberOfOutputs() const = 0;
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struct Output {
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enum { InvalidIndex = 0xffffffff };
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Output()
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: mInput(InvalidIndex)
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{
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}
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Output(AudioNode* aDestination, uint32_t aInput)
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: mDestination(aDestination),
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mInput(aInput)
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{
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}
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// Check whether the slot is valid
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typedef void**** ConvertibleToBool;
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operator ConvertibleToBool() const {
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return ConvertibleToBool(mDestination && mInput != InvalidIndex);
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}
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// Needed for the CC traversal
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AudioNode* get() const {
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return mDestination;
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}
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nsRefPtr<AudioNode> mDestination;
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// This is an index into mDestination->mInputs which specifies the Input
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// object corresponding to this Output node.
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const uint32_t mInput;
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};
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struct Input {
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enum { InvalidIndex = 0xffffffff };
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Input()
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: mOutput(InvalidIndex)
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{
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}
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Input(AudioNode* aSource, uint32_t aOutput)
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: mSource(aSource),
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mOutput(aOutput)
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{
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}
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// Check whether the slot is valid
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typedef void**** ConvertibleToBool;
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operator ConvertibleToBool() const {
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return ConvertibleToBool(mSource && mOutput != InvalidIndex);
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}
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// Needed for the CC traversal
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AudioNode* get() const {
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return mSource;
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}
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nsRefPtr<AudioNode> mSource;
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// This is an index into mSource->mOutputs which specifies the Output
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// object corresponding to this Input node.
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const uint32_t mOutput;
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};
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private:
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nsRefPtr<AudioContext> mContext;
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nsTArray<Input> mInputs;
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nsTArray<Output> mOutputs;
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};
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}
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}
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#endif
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