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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef AUDIOCAPTURESESSION_H
#define AUDIOCAPTURESESSION_H
#include <QFile>
#include <QUrl>
#include <QDir>
#include <QMutex>
#include "audioencodercontrol.h"
#include "audioinputselector.h"
#include "audiomediarecordercontrol.h"
#include <qaudioformat.h>
#include <qaudioinput.h>
#include <qaudiodeviceinfo.h>
QT_BEGIN_NAMESPACE
class AudioCaptureProbeControl;
class FileProbeProxy: public QFile {
public:
void startProbes(const QAudioFormat& format);
void stopProbes();
void addProbe(AudioCaptureProbeControl *probe);
void removeProbe(AudioCaptureProbeControl *probe);
protected:
virtual qint64 writeData(const char *data, qint64 len);
private:
QAudioFormat m_format;
QList<AudioCaptureProbeControl*> m_probes;
QMutex m_probeMutex;
};
class AudioCaptureSession : public QObject
{
Q_OBJECT
public:
AudioCaptureSession(QObject *parent = 0);
~AudioCaptureSession();
QAudioFormat format() const;
void setFormat(const QAudioFormat &format);
QString containerFormat() const;
void setContainerFormat(const QString &formatMimeType);
QUrl outputLocation() const;
bool setOutputLocation(const QUrl& location);
qint64 position() const;
void setState(QMediaRecorder::State state);
QMediaRecorder::State state() const;
QMediaRecorder::Status status() const;
void addProbe(AudioCaptureProbeControl *probe);
void removeProbe(AudioCaptureProbeControl *probe);
void setCaptureDevice(const QString &deviceName);
void setVolume(qreal v);
qreal volume() const;
void setMuted(bool muted);
bool isMuted() const;
signals:
void stateChanged(QMediaRecorder::State state);
void statusChanged(QMediaRecorder::Status status);
void positionChanged(qint64 position);
void actualLocationChanged(const QUrl &location);
void volumeChanged(qreal volume);
void mutedChanged(bool muted);
void error(int error, const QString &errorString);
private slots:
void audioInputStateChanged(QAudio::State state);
void notify();
private:
void record();
void pause();
void stop();
void setStatus(QMediaRecorder::Status status);
void setVolumeHelper(qreal volume);
QDir defaultDir() const;
QString generateFileName(const QString &requestedName,
const QString &extension) const;
QString generateFileName(const QDir &dir, const QString &extension) const;
FileProbeProxy file;
QString m_captureDevice;
QUrl m_requestedOutputLocation;
QUrl m_actualOutputLocation;
QMediaRecorder::State m_state;
QMediaRecorder::Status m_status;
QAudioInput *m_audioInput;
QAudioDeviceInfo m_deviceInfo;
QAudioFormat m_format;
bool m_wavFile;
qreal m_volume;
bool m_muted;
// WAV header stuff
struct chunk
{
char id[4];
quint32 size;
};
struct RIFFHeader
{
chunk descriptor;
char type[4];
};
struct WAVEHeader
{
chunk descriptor;
quint16 audioFormat; // PCM = 1
quint16 numChannels;
quint32 sampleRate;
quint32 byteRate;
quint16 blockAlign;
quint16 bitsPerSample;
};
struct DATAHeader
{
chunk descriptor;
// quint8 data[];
};
struct CombinedHeader
{
RIFFHeader riff;
WAVEHeader wave;
DATAHeader data;
};
CombinedHeader header;
};
QT_END_NAMESPACE
#endif
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