source: trunk/src/gui/kernel/qsound.cpp@ 765

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#include "qsound.h"

#ifndef QT_NO_SOUND

#include "qlist.h"
#include <private/qobject_p.h>
#include "qsound_p.h"

QT_BEGIN_NAMESPACE

static QList<QAuServer*> *servers=0;

QAuServer::QAuServer(QObject* parent)
    : QObject(parent)
{
    if (!servers)
        servers = new QList<QAuServer*>;
    servers->prepend(this);
}

QAuServer::~QAuServer()
{
    servers->removeAll(this);
    if (servers->count() == 0) {
        delete servers;
        servers = 0;
    }
}

void QAuServer::play(const QString& filename)
{
    QSound s(filename);
    play(&s);
}

extern QAuServer* qt_new_audio_server();

static QAuServer& server()
{
    if (!servers) qt_new_audio_server();
    return *servers->first();
}

class QSoundPrivate : public QObjectPrivate
{
public:
    QSoundPrivate(const QString& fname)
        : filename(fname), server(0), bucket(0), looprem(0), looptotal(1)
    {
    }

    ~QSoundPrivate()
    {
        delete bucket;
    }

    QString filename;
    QAuServer* server;
    QAuBucket* bucket;
    int looprem;
    int looptotal;
};

/*!
    \class QSound
    \brief The QSound class provides access to the platform audio facilities.

    \ingroup multimedia


    Qt provides the most commonly required audio operation in GUI
    applications: asynchronously playing a sound file. This is most
    easily accomplished using the static play() function:

    \snippet doc/src/snippets/code/src_gui_kernel_qsound.cpp 0

    Alternatively, create a QSound object from the sound file first
    and then call the play() slot:

    \snippet doc/src/snippets/code/src_gui_kernel_qsound.cpp 1

    Once created a QSound object can be queried for its fileName() and
    total number of loops() (i.e. the number of times the sound will
    play). The number of repetitions can be altered using the
    setLoops() function. While playing the sound, the loopsRemaining()
    function returns the remaining number of repetitions. Use the
    isFinished() function to determine whether the sound has finished
    playing.