Problem with QAudioRecorder

helenebro

Hi,
I have an app where I record sound when I press a button. When I release the button, record must stop.
Behavior of QAudioRecorder seems to be an errors.
If I have understood,

when I execute QAudioRecorder::record(), QAudioRecorder go from LoadedStatus to StartingStatus and automatically to RecordingStatus
when I execute QAudioRecorder::stop() (and QAudioRecorder is during recording process) , QAudioRecorder go from RecordingStatus to FinalizingStatus and automatically to LoadedStatus.

But sometimes, when I start record, QAudioRecorder stay on StartingStatus and when I stop record, QAudioRecorder stay on FinalizingStatus.
Have you an idea of the problem ?

#include "voicerecorder.h"

#include <QAudioDeviceInfo>

VoiceRecorder::VoiceRecorder(QObject *parent) :
    QObject(parent),
    myAudioRecorder(0),
    b_recording(false),
    pathAudioFile("")
{
	createAudioRecorder();
}

VoiceRecorder::~VoiceRecorder()
{
    delete myAudioRecorder;
}

void VoiceRecorder::createAudioRecorder()
{
    qDebug()<<"createAudioRecorder";
    myAudioRecorder= new QAudioRecorder(this);
    connect(myAudioRecorder, SIGNAL(statusChanged(QMediaRecorder::Status)), this, SLOT(displayStatus(QMediaRecorder::Status)));
    pathAudioFile = QDir::currentPath();
    pathAudioFile+="/audio.flac";
    myAudioRecorder -> setOutputLocation ( QUrl(pathAudioFile));
    QAudioEncoderSettings audioSettings;
    audioSettings.setCodec("audio/FLAC");
    myAudioRecorder->setEncodingSettings(audioSettings);
}

void VoiceRecorder::switchStateMicro()
{
    qDebug()<<"switchStateMicro()"<<b_recording;
    if(b_recording) {
	stopAudio();
    }
    else {
	recordAudio();
    }
}

void VoiceRecorder::recordAudio()
{
    qDebug()<<"recordAudio"<<myAudioRecorder->status();
    if(myAudioRecorder->status() ==  QMediaRecorder::LoadedStatus) {
	myAudioRecorder->record();
    }
}


void VoiceRecorder::stopAudio()
{
    qDebug()<<"stopAudio"<<myAudioRecorder->status();
    if(myAudioRecorder->status() ==  QMediaRecorder::RecordingStatus) {
	myAudioRecorder->stop();
      //Do something
    }
}

void VoiceRecorder::displayStatus(QMediaRecorder::Status status)
{
    qDebug()<<" myAudioRecorder status"<<status;
    if(myAudioRecorder->status()==QMediaRecorder::RecordingStatus){
	b_recording= true;
    }else {
	b_recording= false;
    }
    emit recordingChanged(b_recording);
}

#ifndef VOICERECORDER_H
#define VOICERECORDER_H

#include <QObject>
#include <QUrl>
#include <QDebug>
#include <QAudioRecorder>

class VoiceRecorder : public QObject
{
  Q_OBJECT
public:
  explicit VoiceRecorder(QObject *parent = 0);
    ~VoiceRecorder();
    void createAudioRecorder();

signals:
    void recordingChanged (bool );

public slots:
    void switchStateMicro();
    void recordAudio( );
    void stopAudio( );
    void displayStatus(QMediaRecorder::Status status);
private:
    QAudioRecorder *myAudioRecorder;
    bool b_recording;
    QString pathAudioFile;
};

#endif // VOICERECORDER_H

Thank you for your help

SGaist

Hi,

You should also add which version of Qt you are using as well as OS

helenebro

@SGaist
i use Qt 5.2.1 under Ubuntu 14.04

SGaist

Can you test that with a more recent version of Qt e.g. 5.5 ?

helenebro

I have tried with Qt 5.5.0 and I have the same problem :

-> request record 
new status QMediaRecorder  QMediaRecorder::StartingStatus
new status QMediaRecorder  QMediaRecorder::RecordingStatus
->  request stop record 
new status QMediaRecorder  QMediaRecorder::FinalizingStatus
new status QMediaRecorder  QMediaRecorder::LoadedStatus

-> request record 
new status QMediaRecorder  QMediaRecorder::StartingStatus
new status QMediaRecorder  QMediaRecorder::RecordingStatus
-> request stop record 
new status QMediaRecorder  QMediaRecorder::FinalizingStatus

-> request record but problem

SGaist

Then you should check the bug report system