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