Phonon Cannot Play Sound (without Error)

[padawan]

Hi,
I am trying to build a simple Phonon application. I have tried a simple code like:



QApplication::setApplicationName("panda");
QList<AudioOutputDevice> ss=Phonon::BackendCapabilities::availableAudioOutp utDevices();
MediaObject *m_media;
m_media = new Phonon::MediaObject(this);
Phonon::AudioOutput *audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
//audioOutput->setOutputDevice(Phonon::AudioOutputDevice::fromInd ex((((AudioOutputDevice)ss.at(0)).index())));
createPath(m_media, audioOutput);
MediaSource m=MediaSource("/FileSpace/n.mp3");
m_media->setCurrentSource(m);
m_media->play();


This code compiled and ran w/o any error, however I do not get any output.

I have also tried Media Player example in Qt site, in that, when I push play button immediately playing ends.

Any thoughts or comments?

[yogeshgokul]

This code compiled and ran w/o any error, however I do not get any output.
On what os platform you are trying?



QList<AudioOutputDevice> ss=Phonon::BackendCapabilities::availableAudioOutp utDevices();

Can you please get the count of ss?



I have also tried Media Player example in Qt site, in that, when I push play button immediately playing ends.

What is the length of sound file you tried with?

[padawan]

On what os platform you are trying?

xubuntu linux


Can you please get the count of ss?

3;
10001 - ALSA default output
10002 - OSS default output
10000 - PulseAudio

BTW, I have tried to change output device by uncommenting the line you mentioned and using 3 different IDs



What is the length of sound file you tried with?

a few minutes long mp3 song

[yogeshgokul]

Check for "gstreamer", is it properly installed on your environment. Well I guess, it is. Thats why you are getting the list of 3 devices.
Check is you can playback mp3 on same environment by any tool. This will test for sound codecs and output devices.

[padawan]

Hi,
gstreamer and some related packages are installed (but not everything that contains gsreamer), but anyway, MP3 playback is without problem in the system with any other software.

[TTGator]

Try running it with PHONON_GST_DEBUG=3. For example, to run "myApp"

PHONON_GST_DEBUG=3 ./myApp -qws

It outputs a lot of helpful info of what's actually going wrong