/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtGui module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "qsound.h"+
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+
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#ifndef QT_NO_SOUND+
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+
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#include "qapplication.h"+
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#include "qapplication_p.h"+
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#include <qfile.h>+
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#include "qpointer.h"+
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#include "qsound_p.h"+
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+
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#include <qt_windows.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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class QAuServerWindows : public QAuServer {+
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    Q_OBJECT+
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+
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public:+
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    QAuServerWindows(QObject* parent);+
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    ~QAuServerWindows();+
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+
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    void playHelper(const QString &filename, int loop, QSound *snd);+
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    void play(const QString& filename, int loop);+
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    void play(QSound*);+
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+
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    void stop(QSound*);+
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    bool okay();+
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+
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    int decLoop(QSound *snd) { return QAuServer::decLoop(snd); }+
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+
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    HANDLE current;+
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    HANDLE mutex;+
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    HANDLE event;+
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};+
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+
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QAuServerWindows::QAuServerWindows(QObject* parent) :+
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    QAuServer(parent), current(0)+
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{+
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    mutex = CreateMutex(0, 0, 0);+
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    event = CreateEvent(0, FALSE, FALSE, 0);+
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}+
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+
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QAuServerWindows::~QAuServerWindows()+
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{+
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    HANDLE mtx = mutex;+
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    WaitForSingleObject(mtx, INFINITE);+
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    mutex = 0;+
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+
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    ReleaseMutex(mtx);+
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    CloseHandle(mtx);+
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    CloseHandle(event);+
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}+
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+
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struct SoundInfo+
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{+
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    SoundInfo(const QString &fn, int lp, QSound *snd, QAuServerWindows *srv)+
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        : sound(snd), server(srv), filename(fn), loops(lp)+
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    {+
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    }+
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+
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    QSound *sound;+
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    QAuServerWindows *server;+
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    QString filename;+
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    int loops;+
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};+
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+
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DWORD WINAPI SoundPlayProc(LPVOID param)+
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{+
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    SoundInfo *info = (SoundInfo*)param;+
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+
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    // copy data before waking up GUI thread+
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    QAuServerWindows *server = info->server;+
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    QSound *sound = info->sound;+
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    int loops = info->loops;+
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    QString filename = info->filename;+
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    HANDLE mutex = server->mutex;+
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    HANDLE event = server->event;+
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    info = 0;+
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+
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    // server must not be destroyed until thread finishes+
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    // and all other sounds have to wait+
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    WaitForSingleObject(mutex, INFINITE);+
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+
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    if (loops <= 1) {+
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        server->current = 0;+
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        int flags = SND_FILENAME|SND_ASYNC;+
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        if (loops == -1)+
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            flags |= SND_LOOP;+
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+
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        PlaySound((wchar_t*)filename.utf16(), 0, flags);+
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        if (sound && loops == 1)+
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            server->decLoop(sound);+
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+
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        // GUI thread continues, but we are done as well.+
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        SetEvent(event);+
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    } else {+
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        // signal GUI thread to continue - sound might be reset!+
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        QPointer<QSound> guarded_sound = sound;+
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        SetEvent(event);+
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+
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        for (int l = 0; l < loops && server->current; ++l) {+
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            PlaySound((wchar_t*)filename.utf16(), 0, SND_FILENAME | SND_SYNC);+
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+
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            if (guarded_sound)+
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                server->decLoop(guarded_sound);+
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        }+
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        server->current = 0;+
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    }+
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    ReleaseMutex(mutex);+
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+
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    return 0;+
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}+
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+
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void QAuServerWindows::playHelper(const QString &filename, int loop, QSound *snd)+
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{+
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    if (loop == 0)+
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        return;+
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    // busy?+
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    if (WaitForSingleObject(mutex, 0) == WAIT_TIMEOUT)+
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        return;+
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    ReleaseMutex(mutex);+
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+
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    DWORD threadid = 0;+
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    SoundInfo info(filename, loop, snd, this);+
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    current = CreateThread(0, 0, SoundPlayProc, &info, 0, &threadid);+
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    CloseHandle(current);+
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+
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    WaitForSingleObject(event, INFINITE);+
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}+
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+
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void QAuServerWindows::play(const QString& filename, int loop)+
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{+
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    playHelper(filename, loop, 0);+
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}+
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+
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void QAuServerWindows::play(QSound* s)+
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{+
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    playHelper(s->fileName(), s->loops(), s);+
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}+
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+
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void QAuServerWindows::stop(QSound*)+
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{+
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    // stop unlooped sound+
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    if (!current)+
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        PlaySound(0, 0, 0);+
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    // stop after loop is done+
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    current = 0;+
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}+
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+
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bool QAuServerWindows::okay()+
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{+
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    return true;+
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}+
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+
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QAuServer* qt_new_audio_server()+
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{+
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    return new QAuServerWindows(qApp);+
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}+
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+
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QT_END_NAMESPACE+
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+
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#include "qsound_win.moc"+
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+
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#endif // QT_NO_SOUND+
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