tonePlayer.h

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/* Copyright 2016 Artem Sharganov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. */

#pragma once

#include "audioSynthDevice.h"

#include <QtCore/QObject>
#include <QtCore/QTimer>
#include <QtMultimedia/QAudioOutput>

namespace trikControl {

class TonePlayer : public QObject
{
    Q_OBJECT
public:

    TonePlayer();

public slots:

    void play(int freqHz, int durationMs);

private:
    QAudioFormat mFormat;

    AudioSynthDevice *mDevice; // Has ownership
    QAudioOutput *mOutput; // Has ownership
    QTimer mTimer;

    void initializeAudio();

    static constexpr int CHANNEL_COUNT = 1;
    static constexpr int SAMPLE_RATE = 16000;
    static constexpr int SAMPLE_SIZE = 16;

public slots:
    void stop();
};
}