dom/midi/MIDIPortParent.h
author Mike Hommey <mh+mozilla@glandium.org>
Fri, 11 Jan 2019 16:01:15 +0000
changeset 453570 daf50f25895db073e44d50fecf2e4f6fe873865d
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
child 457432 92091d537161e4df0986113e26762ed801190dfa
permissions -rw-r--r--
Bug 1519307 - Add a new project to build useful parts of breakpad independently. r=froydnj With `ac_add_options --enable-project=tools/crashreporter` in a mozconfig, `./mach build` builds minidump_stackwalk, dump_syms and fileid. One caveat is that due to limitation in how the build system works currently, it's cumbersome to keep dump_syms as a host program for Gecko, and to make it a target program for this project. For now, keep it as a host program. We're not going to use it on automation, but it's still convenient to have for quick local builds (I've had to resort to awful hacks downstream). Differential Revision: https://phabricator.services.mozilla.com/D16299

/* -*- 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 {
namespace dom {

/**
 * Actor representing the parent (PBackground thread) side of a MIDIPort object.
 *
 */
class MIDIPortParent final : public PMIDIPortParent, public MIDIPortInterface {
 public:
  NS_INLINE_DECL_REFCOUNTING(MIDIPortParent);
  void ActorDestroy(ActorDestroyReason) override;
  mozilla::ipc::IPCResult RecvSend(nsTArray<MIDIMessage>&& aMsg) override;
  mozilla::ipc::IPCResult RecvOpen() override;
  mozilla::ipc::IPCResult RecvClose() override;
  mozilla::ipc::IPCResult RecvClear() override;
  mozilla::ipc::IPCResult RecvShutdown() override;
  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& aState,
                        const MIDIPortConnectionState& aConnection);
  uint32_t GetInternalId() const { return mInternalId; }
  void Teardown();

 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 dom
}  // namespace mozilla

#endif