I'm not an expert on audio formats & hardware, but I guess sending raw data directly to an output device without a decoder in between is probably not a good idea.
Have you tried the examples from http://doc.qt.io/qt-5/audiooverview.html ? Viktor On 12.08.2016 14:00, Anisha Kaul wrote: > Much thankful for your polite response. > > My problem is that I first tried this program with an mp3 file. It > didn't work, then I tried the wav file. > Which file format should directly work with it? Is there there > something hardware specific that I need to figure out to make this work? > > I am on windows desktop. > > On Friday, 12 August 2016, Maurice Kalinowski > <maurice.kalinow...@qt.io <mailto:maurice.kalinow...@qt.io>> wrote: > > Hi, > > > > Please note that a wav file is a _/container/_ format, meaning it > starts with a header describing the audio format and then > continues with chunks of data. For more details have a look here: > https://de.wikipedia.org/wiki/RIFF_WAVE > <https://de.wikipedia.org/wiki/RIFF_WAVE> > > > > This means that you will need to parse the header and provide the > data, not just a file as QIODevice which is meant to be a data > stream after you have set up the format correctly. > > > > Maurice > > > > > > *From:*Interest [mailto:interest-bounces+maurice.kalinowski > > <javascript:_e(%7B%7D,'cvml','interest-bounces%2Bmaurice.kalinowski');>=qt...@qt-project.org > <javascript:_e(%7B%7D,'cvml','qt...@qt-project.org');>] *On Behalf > Of *Anisha Kaul > *Sent:* Friday, August 12, 2016 12:31 PM > *To:* interest@qt-project.org > <javascript:_e(%7B%7D,'cvml','interest@qt-project.org');> > *Subject:* [Interest] Only buzzing sound while playing wav file > through QAudioOutput > > > > Hi, > > > > This time I tried playing a wav file, but I cannot hear anything > else than a buzzing sound. > > Platform is windows if that matters. > > > > This time the code is in main.cpp. > > > > Please guide. > > > *********************************************************************************************** > > #include<QCoreApplication> > > #include<QAudioOutput> > > #include<QFile> > > #include<QDebug> > > > > intmain(intargc,char*argv[]) > > { > > QCoreApplicationa(argc,argv); > > > > QAudioOutput*audioOutpu; > > > > QFilesourceFile; > > sourceFile.setFileName("c.wav"); > > boolp=sourceFile./open/(QIODevice::ReadOnly); > > if(p==false) > > qDebug()<<"nofile"; > > else > > qDebug()<<"yesfile"; > > > > > > QAudioDeviceInfod1; > > > QList<QAudioDeviceInfo>l1=d1.availableDevices(QAudio::AudioOutput); > > > > > qDebug()<<"======================================================"; > > qDebug()<<l1.first().supportedCodecs(); > > qDebug()<<l1.first().supportedChannelCounts(); > > qDebug()<<l1.first().supportedSampleTypes(); > > qDebug()<<l1.first().supportedSampleRates(); > > qDebug()<<l1.first().supportedSampleSizes(); > > > > QAudioFormatdesiredFormat1; > > desiredFormat1.setChannelCount(2); > > desiredFormat1.setByteOrder(QAudioFormat::LittleEndian); > > desiredFormat1.setCodec("audio/pcm"); > > desiredFormat1.setSampleType(QAudioFormat::SignedInt); > > desiredFormat1.setSampleRate(44100); > > desiredFormat1.setSampleSize(16); > > > > QAudioDeviceInfoinfo1(QAudioDeviceInfo::defaultOutputDevice()); > > if(!info1.isFormatSupported(desiredFormat1)) > > { > > > qWarning()<<"Defaultformatnotsupported,tryingtousethenearest."; > > desiredFormat1=info1.preferredFormat(); > > } > > > > audioOutpu=newQAudioOutput(desiredFormat1); > > audioOutpu->setVolume(1.0); > > > > audioOutpu->start(&sourceFile); > > qDebug()<<"bbbbbbbbbb"; > > > > returna.exec(); > > } > > > > > ************************************************************************************************** > > Output: > > > > ("audio/pcm") > > (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18) > > (SignedInt, UnSignedInt, Float) > > (8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200, 96000, 192000) > > (8, 16, 24, 32, 48, 64) > > bbbbbbbbbb > > > > > > -- Anisha Kaul > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest -- Viktor Engelmann Software Engineer The Qt Company GmbH Rudower Chaussee 13 D-12489 Berlin viktor.engelm...@qt.io +49 151 26784521 http://qt.io Geschäftsführer: Mika Pälsi, Juha Varelius, Mika Harjuaho Sitz der Gesellschaft: Berlin, Registergericht: Amtsgericht Charlottenburg, HRB 144331 B <http://qt.io> <http://www.facebook.com/Qt> <http://www.twitter.com/qtproject> <https://www.linkedin.com/company/the-qt-company/> <https://plus.google.com/104580575722059274792> <https://www.youtube.com/QtStudios>
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