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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_MIDIMessageQueue_h
#define mozilla_dom_MIDIMessageQueue_h
#include "mozilla/Mutex.h"
#include "nsTArray.h"
// XXX Avoid including this here by moving function implementations to the cpp
// file.
#include "mozilla/dom/MIDITypes.h"
namespace mozilla {
class TimeStamp;
namespace dom {
class MIDIMessage;
/**
* Since some MIDI Messages can be scheduled to be sent in the future, the
* MIDIMessageQueue is responsible for making sure all MIDI messages are
* scheduled and sent in order.
*/
class MIDIMessageQueue {
public:
MIDIMessageQueue();
~MIDIMessageQueue() = default;
// Adds an array of possibly out-of-order messages to our queue.
void Add(nsTArray<MIDIMessage>& aMsg);
// Retrieve all pending messages before the time specified.
void GetMessagesBefore(TimeStamp aTimestamp,
nsTArray<MIDIMessage>& aMsgQueue);
// Get all pending messages.
void GetMessages(nsTArray<MIDIMessage>& aMsgQueue);
// Erase all pending messages.
void Clear();
// Erase all pending messages that would be sent in the future. Useful for
// when ports are closed, as we must send all messages with timestamps in the
// past.
void ClearAfterNow();
private:
// Array of messages to be sent.
nsTArray<MIDIMessage> mMessageQueue;
// Mutex for coordinating cross thread array access.
Mutex mMutex MOZ_UNANNOTATED;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_MIDIMessageQueue_h
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