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#include "qsound.h"

#ifndef QT_NO_SOUND

#include "qapplication.h"

#include "qapplication_p.h"

#include <qfile.h>

#include "qpointer.h"

#include "qsound_p.h"

#include <qt_windows.h>

QT_BEGIN_NAMESPACE

class QAuServerWindows : public QAuServer {

    Q_OBJECT

public:

    QAuServerWindows(QObject* parent);

    ~QAuServerWindows();

    void playHelper(const QString &filename, int loop, QSound *snd);

    void play(const QString& filename, int loop);

    void play(QSound*);

    void stop(QSound*);

    bool okay();

    int decLoop(QSound *snd) { return QAuServer::decLoop(snd); }

    HANDLE current;

    HANDLE mutex;

    HANDLE event;

};

QAuServerWindows::QAuServerWindows(QObject* parent) :

    QAuServer(parent), current(0)

{

    mutex = CreateMutex(0, 0, 0);

    event = CreateEvent(0, FALSE, FALSE, 0);

}

QAuServerWindows::~QAuServerWindows()

{

    HANDLE mtx = mutex;

    WaitForSingleObject(mtx, INFINITE);

    mutex = 0;

    ReleaseMutex(mtx);

    CloseHandle(mtx);

    CloseHandle(event);

}

struct SoundInfo

{

    SoundInfo(const QString &fn, int lp, QSound *snd, QAuServerWindows *srv)

        : sound(snd), server(srv), filename(fn), loops(lp)

    {

    }

    QSound *sound;

    QAuServerWindows *server;

    QString filename;

    int loops;

};

DWORD WINAPI SoundPlayProc(LPVOID param)

{

    SoundInfo *info = (SoundInfo*)param;

    // copy data before waking up GUI thread

    QAuServerWindows *server = info->server;

    QSound *sound = info->sound;

    int loops = info->loops;

    QString filename = info->filename;

    HANDLE mutex = server->mutex;

    HANDLE event = server->event;

    info = 0;

    // server must not be destroyed until thread finishes

    // and all other sounds have to wait

    WaitForSingleObject(mutex, INFINITE);

    if (loops <= 1) {

        server->current = 0;

        int flags = SND_FILENAME|SND_ASYNC;

        if (loops == -1)

            flags |= SND_LOOP;

        PlaySound((wchar_t*)filename.utf16(), 0, flags);

        if (sound && loops == 1)

            server->decLoop(sound);

        // GUI thread continues, but we are done as well.

        SetEvent(event);

    } else {

        // signal GUI thread to continue - sound might be reset!

        QPointer<QSound> guarded_sound = sound;

        SetEvent(event);

        for (int l = 0; l < loops && server->current; ++l) {

            PlaySound((wchar_t*)filename.utf16(), 0, SND_FILENAME | SND_SYNC);

            if (guarded_sound)

                server->decLoop(guarded_sound);

        }

        server->current = 0;

    }

    ReleaseMutex(mutex);

    return 0;

}

void QAuServerWindows::playHelper(const QString &filename, int loop, QSound *snd)

{

    if (loop == 0)

        return;

    // busy?

    if (WaitForSingleObject(mutex, 0) == WAIT_TIMEOUT)

        return;

    ReleaseMutex(mutex);

    DWORD threadid = 0;

    SoundInfo info(filename, loop, snd, this);

    current = CreateThread(0, 0, SoundPlayProc, &info, 0, &threadid);

    CloseHandle(current);

    WaitForSingleObject(event, INFINITE);

}

void QAuServerWindows::play(const QString& filename, int loop)

{

    playHelper(filename, loop, 0);

}

void QAuServerWindows::play(QSound* s)

{

    playHelper(s->fileName(), s->loops(), s);

}

void QAuServerWindows::stop(QSound*)

{

    // stop unlooped sound

    if (!current)

        PlaySound(0, 0, 0);

    // stop after loop is done

    current = 0;

}

bool QAuServerWindows::okay()

{

    return true;

}

QAuServer* qt_new_audio_server()

{

    return new QAuServerWindows(qApp);

}

QT_END_NAMESPACE

#include "qsound_win.moc"

#endif // QT_NO_SOUND