Play music with qt 5

paul_espinosa

hello i need to create a simple mp3 music player whith consola aplication , but i am a new in qt and i saw the examples of qt but i can understand nothing ...if someone can help me wiht a little example of the lines of code to play music ...and what i should write in the archive .pro y main.cpp

SGaist

Hi,

It's explained in the first code sample "here":http://qt-project.org/doc/qt-5/qmediaplayer.html#details

paul_espinosa

thanks i can play music ...but now i need to add a list of song and play this list and i can change of song

mi code is :
this code only play the fisrt song ,when finish the song ,not change of song and begin to play again the first song
@

include <QMediaPlayer>

include <QMediaPlaylist>

int main()
{
QMediaPlaylist *music_paul = new QMediaPlaylist;
music_paul->addMedia(QUrl("C:/Users/henrypaul/Music/qt/p3.mp3"));
music_paul->addMedia(QUrl("C:/Users/henrypaul/Music/qt/p4.mp3"));
music_paul->setCurrentIndex(1);

QMediaPlayer *player = new QMediaPlayer;
player->setPlaylist(music_paul);

while(true)
{
player->play();
}
return 0;
}
@

[andreyc EDIT] Added @

andreyc

Take a look on a "player example":http://qt-project.org/doc/qt-5/qtmultimediawidgets-player-example.html

paul_espinosa

I need to load a list of songs from a specific location
for example all songs of this directory "C:\Users\henrypaul\Music"

but I do not want that I open any dialog window to select the files
for example
QStringList fileNames = QFileDialog::getOpenFileNames(this);
I DONT NEED THAT

I JUST NEED to write in my program the specific location and load this songs in a QStringList

SGaist

QDir is your friend then

paul_espinosa

i try with QDir
but i can not use it correctly
do you help me with the specific code to use QDir please

SGaist

What do you mean by you can't use it correctly ?

What did you try ?

jafarabadi.qt

[quote author="paul_espinosa" date="1410551827"]i try with QDir
but i can not use it correctly
do you help me with the specific code to use QDir please [/quote]

Hi paul_espinosa
if you want to get file(s) of a directory use from
@
QDir myDir(/ur directory path/);
QStringList FNames=myDir.entryList(QDir::Files);
@

paul_espinosa

Thank you for your help. I can build my project, but now I need to control my UI from internet from smarphone .. how could do that ??

SGaist

Implement a web service that will talk to your player

paul_espinosa

some tutorial or example to implement a web service???

andreyc

"Tufao":https://github.com/vinipsmaker/tufao is a Qt based web-framework and it has some examples.

paul_espinosa

hello my dears friends i have a new problem :( ..i have an aplication of play music on QT ,My application works well in mi pc ...
now my problem
i am working whith raspberry pi b+ and i can compilate my aplicacion in the raspberry but not play music :(
am instaled qt5 on raspberry ...do i need to install some more ???
some aplication of qt run very well ..but the music not play

paul_espinosa

hello my dears friends i have a new problem :( ..i have an aplication of play music on QT ,My application works well in mi pc ...
now my problem
i am working whith raspberry pi b+ and i can compilate my aplicacion in the raspberry but not play music :(
am instaled qt5 on raspberry ...do i need to install some more ???
some aplication of qt run very well ..but the music not play

SGaist

Do you have any error message ?

SGaist

Do you have any error message ?

paul_espinosa

un the terminal apear this
GLFS: Unable to query physical screen size, defaulting to 100 dpi.
EGLFS: To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
EGLFS: Unable to query screen depth, defaulting to 32.
EGLFS: To override, set QT_QPA_EGLFS_DEPTH.
defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"
HIGHGUI ERROR: V4L/V4L2: VIDIOC_S_CROP
This plugin does not support propagateSizeHints()

paul_espinosa

un the terminal apear this
GLFS: Unable to query physical screen size, defaulting to 100 dpi.
EGLFS: To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
EGLFS: Unable to query screen depth, defaulting to 32.
EGLFS: To override, set QT_QPA_EGLFS_DEPTH.
defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"
HIGHGUI ERROR: V4L/V4L2: VIDIOC_S_CROP
This plugin does not support propagateSizeHints()

SGaist

Do it again but for define QT_DEBUG_PLUGINS=1