MIDIPortParent.h - mozsearch

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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 mozilla_dom_MIDIPortParent_h

#define mozilla_dom_MIDIPortParent_h

#include "mozilla/dom/PMIDIPortParent.h"

#include "mozilla/dom/MIDIPortBinding.h"

#include "mozilla/dom/MIDIPortInterface.h"

// Header file contents

namespace mozilla::dom {

/**

 * Actor representing the parent (PBackground thread) side of a MIDIPort object.

*/

class MIDIPortParent final : public PMIDIPortParent, public MIDIPortInterface {

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MIDIPortParent, override);

  void ActorDestroy(ActorDestroyReason) override;

  mozilla::ipc::IPCResult RecvSend(nsTArray<MIDIMessage>&& aMsg);

  mozilla::ipc::IPCResult RecvOpen();

  mozilla::ipc::IPCResult RecvClose();

  mozilla::ipc::IPCResult RecvClear();

  mozilla::ipc::IPCResult RecvShutdown();

  MOZ_IMPLICIT MIDIPortParent(const MIDIPortInfo& aPortInfo,

                              const bool aSysexEnabled);

  // Sends the current port status to the child actor. May also send message

  // buffer if required.

  bool SendUpdateStatus(const MIDIPortDeviceState& aDeviceState,

                        const MIDIPortConnectionState& aConnectionState);

  uint32_t GetInternalId() const { return mInternalId; }

 protected:

  ~MIDIPortParent() = default;

  // Queue of messages that needs to be sent. Since sending a message on a

  // closed port opens it, we sometimes have to buffer messages from the time

  // Send() is called until the time we get a device state change to Opened.

  nsTArray<MIDIMessage> mMessageQueue;

  const uint32_t mInternalId;

};

}  // namespace mozilla::dom

#endif