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/*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef UBAUDIOQUEUERECORDER_H_
#define UBAUDIOQUEUERECORDER_H_
#include <QtCore>
#include <ApplicationServices/ApplicationServices.h>
#include <AudioToolbox/AudioToolbox.h>
class UBAudioQueueRecorder : public QObject
{
Q_OBJECT;
public:
UBAudioQueueRecorder(QObject* pObject = 0);
virtual ~UBAudioQueueRecorder();
bool init(const QString& waveInDeviceName = QString(""));
bool close();
static QStringList waveInDevices();
static AudioDeviceID deviceIDFromDeviceName(const QString& name);
static QString deviceNameFromDeviceID(AudioDeviceID id);
static QString deviceUIDFromDeviceID(AudioDeviceID id);
static QList<AudioDeviceID> inputDeviceIDs();
static AudioDeviceID defaultInputDeviceID();
QString lastErrorMessage()
{
return mLastErrorMessage;
}
AudioStreamBasicDescription * audioFormat()
{
return &sAudioFormat;
}
signals:
void newWaveBuffer(void* pBuffer,
long pLength);
void audioLevelChanged(quint8 level);
private:
static void audioQueueInputCallback (void *inUserData,
AudioQueueRef inAQ,
AudioQueueBufferRef inBuffer,
const AudioTimeStamp *inStartTime,
UInt32 inNumberPacketDescriptions,
const AudioStreamPacketDescription *inPacketDescs);
void emitNewWaveBuffer(AudioQueueBufferRef pBuffer,
int inNumberPacketDescriptions,
const AudioStreamPacketDescription *inPacketDescs);
void emitAudioLevelChanged(quint8 level);
void setLastErrorMessage(const QString& pLastErrorMessage)
{
mLastErrorMessage = pLastErrorMessage;
qWarning() << "UBAudioQueueRecorder error:" << mLastErrorMessage;
}
bool isRecording() const
{
return mIsRecording;
}
AudioQueueRef mQueue;
QList<AudioQueueBufferRef> mBuffers;
QString mLastErrorMessage;
volatile bool mIsRecording;
int mBufferLengthInMs;
volatile long mMsTimeStamp;
UInt32 mSampleBufferSize;
static AudioStreamBasicDescription sAudioFormat;
};
#endif /* UBAUDIOQUEUERECORDER_H_ */