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> 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 > > > > 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> > > > > int main(int argc, char *argv[]) > > { > > QCoreApplication a(argc, argv); > > > > QAudioOutput* audioOutpu; > > > > QFile sourceFile; > > sourceFile.setFileName("c.wav"); > > bool p = sourceFile.*open*(QIODevice::ReadOnly); > > if (p == false) > > qDebug() << "no file"; > > else > > qDebug() << "yes file"; > > > > > > QAudioDeviceInfo d1; > > 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(); > > > > QAudioFormat desiredFormat1; > > desiredFormat1.setChannelCount(2); > > desiredFormat1.setByteOrder(QAudioFormat::LittleEndian); > > desiredFormat1.setCodec("audio/pcm"); > > desiredFormat1.setSampleType(QAudioFormat::SignedInt); > > desiredFormat1.setSampleRate(44100); > > desiredFormat1.setSampleSize(16); > > > > QAudioDeviceInfo info1(QAudioDeviceInfo::defaultOutputDevice()); > > if (!info1.isFormatSupported(desiredFormat1)) > > { > > qWarning() << "Default format not supported, trying to use the > nearest."; > > desiredFormat1 = info1.preferredFormat(); > > } > > > > audioOutpu = new QAudioOutput(desiredFormat1); > > audioOutpu->setVolume(1.0); > > > > audioOutpu->start(&sourceFile); > > qDebug() << "bbbbbbbbbb"; > > > > return a.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
