/* -*- 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 ScriptProcessorNode_h_
#define ScriptProcessorNode_h_

#include "AudioNode.h"
#include "mozilla/ErrorResult.h"

namespace mozilla {
namespace dom {

class AudioContext;
class SharedBuffers;

class ScriptProcessorNode final : public AudioNode {
 public:
  ScriptProcessorNode(AudioContext* aContext, uint32_t aBufferSize,
                      uint32_t aNumberOfInputChannels,
                      uint32_t aNumberOfOutputChannels);

  NS_INLINE_DECL_REFCOUNTING_INHERITED(ScriptProcessorNode, AudioNode)

  IMPL_EVENT_HANDLER(audioprocess)

  using EventTarget::EventListenerAdded;
  void EventListenerAdded(nsAtom* aType) override;

  using EventTarget::EventListenerRemoved;
  void EventListenerRemoved(nsAtom* aType) override;

  JSObject* WrapObject(JSContext* aCx,
                       JS::Handle<JSObject*> aGivenProto) override;

  AudioNode* Connect(AudioNode& aDestination, uint32_t aOutput, uint32_t aInput,
                     ErrorResult& aRv) override {
    AudioNode* node = AudioNode::Connect(aDestination, aOutput, aInput, aRv);
    if (!aRv.Failed()) {
      UpdateConnectedStatus();
    }
    return node;
  }

  void Connect(AudioParam& aDestination, uint32_t aOutput,
               ErrorResult& aRv) override {
    AudioNode::Connect(aDestination, aOutput, aRv);
    if (!aRv.Failed()) {
      UpdateConnectedStatus();
    }
  }
  void Disconnect(ErrorResult& aRv) override {
    AudioNode::Disconnect(aRv);
    UpdateConnectedStatus();
  }
  void Disconnect(uint32_t aOutput, ErrorResult& aRv) override {
    AudioNode::Disconnect(aOutput, aRv);
    UpdateConnectedStatus();
  }
  void NotifyInputsChanged() override { UpdateConnectedStatus(); }
  void NotifyHasPhantomInput() override {
    mHasPhantomInput = true;
    // No need to UpdateConnectedStatus() because there was previously an
    // input in InputNodes().
  }
  void Disconnect(AudioNode& aDestination, ErrorResult& aRv) override {
    AudioNode::Disconnect(aDestination, aRv);
    UpdateConnectedStatus();
  }
  void Disconnect(AudioNode& aDestination, uint32_t aOutput,
                  ErrorResult& aRv) override {
    AudioNode::Disconnect(aDestination, aOutput, aRv);
    UpdateConnectedStatus();
  }
  void Disconnect(AudioNode& aDestination, uint32_t aOutput, uint32_t aInput,
                  ErrorResult& aRv) override {
    AudioNode::Disconnect(aDestination, aOutput, aInput, aRv);
    UpdateConnectedStatus();
  }
  void Disconnect(AudioParam& aDestination, ErrorResult& aRv) override {
    AudioNode::Disconnect(aDestination, aRv);
    UpdateConnectedStatus();
  }
  void Disconnect(AudioParam& aDestination, uint32_t aOutput,
                  ErrorResult& aRv) override {
    AudioNode::Disconnect(aDestination, aOutput, aRv);
    UpdateConnectedStatus();
  }
  void SetChannelCount(uint32_t aChannelCount, ErrorResult& aRv) override {
    if (aChannelCount != ChannelCount()) {
      // Spec says to throw InvalidStateError, but see
      // https://github.com/WebAudio/web-audio-api/issues/2153
      aRv.ThrowNotSupportedError(
          "Cannot change channel count of ScriptProcessorNode");
    }
  }
  void SetChannelCountModeValue(ChannelCountMode aMode,
                                ErrorResult& aRv) override {
    if (aMode != ChannelCountMode::Explicit) {
      // Spec says to throw InvalidStateError, but see
      // https://github.com/WebAudio/web-audio-api/issues/2154
      aRv.ThrowNotSupportedError(
          "Cannot change channel count mode of ScriptProcessorNode");
    }
  }

  uint32_t BufferSize() const { return mBufferSize; }

  uint32_t NumberOfOutputChannels() const { return mNumberOfOutputChannels; }

  using DOMEventTargetHelper::DispatchTrustedEvent;

  const char* NodeType() const override { return "ScriptProcessorNode"; }

  size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;

 private:
  virtual ~ScriptProcessorNode();

  void UpdateConnectedStatus();

  const uint32_t mBufferSize;
  const uint32_t mNumberOfOutputChannels;
  bool mHasPhantomInput = false;
};

}  // namespace dom
}  // namespace mozilla

#endif