[Solved] .mp3 with Qt

[spode]

how to play a music file with Qt? i need to run a .mp3 one and .wav ones are too heavy! QML is better...

[Chuck Gao]

Hi spode, have a look at Multimedia QML Plugin, i think that's what you want.:D
@
import Qt 4.7
import QtMultimediaKit 1.1
...

 Audio {
     id: playMusic
     source: "music.wav"
 }
 MouseArea {
     id: playArea
     anchors.fill: parent
     onPressed:  { playMusic.play() }
 }

@

[spode]

@ not installed
import QtMultimediaKit 1.1
^ @ this is my error. however, .wav are too heavy, so i am triing for another format's support

[Chuck Gao]

[quote author="spode" date="1308212238"][code]not installed
import QtMultimediaKit 1.1
^ [/code] this is my error. however, .wav are too heavy, so i am triing for another format's support[/quote]

MP3 or Ogg is also be supportted.

The not installed error means you didn't install(make&make install) the corresponding plugin/lib. If you target in Windows/Linux/Mac, you need compile the Qt Mobility by yourself to enable using it.

[spode]

I need to use this application on windows...

[spode]

how to run .mp3 in Qt? Otherwise, how to open them with the default program (Media player and other)?

Edit: This was posted as a separate topic, but it clearly belongs to this topic; Andre

[andre]

If you want to open the MP3 in the default application, just use something like this:

@
QUrl mp3Url = QUrl::fromLocalFile(theMp3FileName); //assuming you want to play a local file
QDesktopServices::openUrl(mp3Url);
@

[spode]

0k. it starts, so thank you, but there is a problem: relative url dows not start..

[andre]

Could you try if it works if you use a full path to the file, instead of a relative one?

[spode]

yes, from full path it start.
@ QUrl mp3Url = QUrl::fromLocalFile("../qml/fileTrenner2/compleanno.mp3");
QDesktopServices::openUrl(mp3Url);
@ with relative path it does not start...

[loladiro]

Make sure your relative path is relative to "QDir::current()":http://doc.qt.nokia.com/4.7/qdir.html#current is. If it isn't you can always use
@QDir(QCoreApplication::applicationDirPath ()).absoulteFilePath("/path/")@

[spode]

thank you. @
QString s = QDir::current().absolutePath().append("/qml/fileTrenner2/compleanno.mp3");
QUrl mp3Url = QUrl::fromLocalFile(s);
QDesktopServices::openUrl(mp3Url); @
this snippet starts!

[loladiro]

If I were you I'd still use applicationDirPath, because the working directory usually changes throughout your application and you cannot be sure that it points to where you want it to point.

[spode]

i have this snippet:
@ QString s = QDir::current().absolutePath().append("/qml/fileTrenner2/compleanno.mp3");
QUrl mp3Url = QUrl::fromLocalFile(s);
QDesktopServices::openUrl(mp3Url); @
i want that the new window opens itself in minimized mode...or i want to move it.
how to do it?

[spode]

so, ideas for fixing?

[loladiro]

If you just want to play a mp3 file, I ask you to use $yourFavoriteSearchEngine. There are plenty of threads on the internet dealing with that.

[andre]

As loladiro suggested: use applicationDirPath.

[loladiro]

I think you can figure it out yourself. I am happy to give you tips, but I'm not going to write your app for you (or even parts of it).

[spode]

ahahah that is true! so, thanks!