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    40 ****************************************************************************/

    41 

    42 #include "qsound.h"

    43 

    44 #ifndef QT_NO_SOUND

    45 

    46 #include "qapplication.h"

    47 #include "qapplication_p.h"

    48 #include <qfile.h>

    49 #include "qpointer.h"

    50 #include "qsound_p.h"

    51 

    52 #include <qt_windows.h>

    53 

    54 QT_BEGIN_NAMESPACE

    55 

    56 class QAuServerWindows : public QAuServer {

    57     Q_OBJECT

    58 

    59 public:

    60     QAuServerWindows(QObject* parent);

    61     ~QAuServerWindows();

    62 

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

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

    65     void play(QSound*);

    66 

    67     void stop(QSound*);

    68     bool okay();

    69 

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

    71 

    72     HANDLE current;

    73     HANDLE mutex;

    74     HANDLE event;

    75 };

    76 

    77 QAuServerWindows::QAuServerWindows(QObject* parent) :

    78     QAuServer(parent), current(0)

    79 {

    80     mutex = CreateMutex(0, 0, 0);

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

    82 }

    83 

    84 QAuServerWindows::~QAuServerWindows()

    85 {

    86     HANDLE mtx = mutex;

    87     WaitForSingleObject(mtx, INFINITE);

    88     mutex = 0;

    89 

    90     ReleaseMutex(mtx);

    91     CloseHandle(mtx);

    92     CloseHandle(event);

    93 }

    94 

    95 struct SoundInfo

    96 {

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

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

    99     {

   100     }

   101 

   102     QSound *sound;

   103     QAuServerWindows *server;

   104     QString filename;

   105     int loops;

   106 };

   107 

   108 DWORD WINAPI SoundPlayProc(LPVOID param)

   109 {

   110     SoundInfo *info = (SoundInfo*)param;

   111 

   112     // copy data before waking up GUI thread

   113     QAuServerWindows *server = info->server;

   114     QSound *sound = info->sound;

   115     int loops = info->loops;

   116     QString filename = info->filename;

   117     HANDLE mutex = server->mutex;

   118     HANDLE event = server->event;

   119     info = 0;

   120 

   121     // server must not be destroyed until thread finishes

   122     // and all other sounds have to wait

   123     WaitForSingleObject(mutex, INFINITE);

   124 

   125     if (loops <= 1) {

   126         server->current = 0;

   127         int flags = SND_FILENAME|SND_ASYNC;

   128         if (loops == -1)

   129             flags |= SND_LOOP;

   130 

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

   132         if (sound && loops == 1)

   133             server->decLoop(sound);

   134 

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

   136         SetEvent(event);

   137     } else {

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

   139         QPointer<QSound> guarded_sound = sound;

   140         SetEvent(event);

   141 

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

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

   144 

   145             if (guarded_sound)

   146                 server->decLoop(guarded_sound);

   147         }

   148         server->current = 0;

   149     }

   150     ReleaseMutex(mutex);

   151 

   152     return 0;

   153 }

   154 

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

   156 {

   157     if (loop == 0)

   158         return;

   159     // busy?

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

   161         return;

   162     ReleaseMutex(mutex);

   163 

   164     DWORD threadid = 0;

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

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

   167     CloseHandle(current);

   168 

   169     WaitForSingleObject(event, INFINITE);

   170 }

   171 

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

   173 {

   174     playHelper(filename, loop, 0);

   175 }

   176 

   177 void QAuServerWindows::play(QSound* s)

   178 {

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

   180 }

   181 

   182 void QAuServerWindows::stop(QSound*)

   183 {

   184     // stop unlooped sound

   185     if (!current)

   186         PlaySound(0, 0, 0);

   187     // stop after loop is done

   188     current = 0;

   189 }

   190 

   191 bool QAuServerWindows::okay()

   192 {

   193     return true;

   194 }

   195 

   196 QAuServer* qt_new_audio_server()

   197 {

   198     return new QAuServerWindows(qApp);

   199 }

   200 

   201 QT_END_NAMESPACE

   202 

   203 #include "qsound_win.moc"

   204 

   205 #endif // QT_NO_SOUND