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    38 ** $QT_END_LICENSE$

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

    41 

    42 //

    43 //  W A R N I N G

    44 //  -------------

    45 //

    46 // This file is not part of the Qt API. It exists purely as an

    47 // implementation detail. This header file may change from version to

    48 // version without notice, or even be removed.

    49 //

    50 // We mean it.

    51 //

    52 

    53 #include <QtCore/qcoreapplication.h>

    54 #include <QtMultimedia/qaudioformat.h>

    55 #include <QtNetwork>

    56 #include <QTime>

    57 

    58 #include "qmediacontent.h"

    59 #include "qmediaplayer.h"

    60 #include "qsoundeffect_p.h"

    61 

    62 #include "wavedecoder.h"

    63 

    64 #include "qsoundeffect_pulse_p.h"

    65 

    66 #if(QT_MULTIMEDIA_MAEMO5)

    67 #include <pulse/ext-stream-restore.h>

    68 #endif

    69 

    70 // Less than ideal

    71 #define PA_SCACHE_ENTRY_SIZE_MAX (1024*1024*16)

    72 

    73 namespace

    74 {

    75 inline pa_sample_spec audioFormatToSampleSpec(const QAudioFormat &format)

    76 {

    77     pa_sample_spec  spec;

    78 

    79     spec.rate = format.frequency();

    80     spec.channels = format.channels();

    81 

    82     if (format.sampleSize() == 8)

    83         spec.format = PA_SAMPLE_U8;

    84     else if (format.sampleSize() == 16) {

    85         switch (format.byteOrder()) {

    86             case QAudioFormat::BigEndian: spec.format = PA_SAMPLE_S16BE; break;

    87             case QAudioFormat::LittleEndian: spec.format = PA_SAMPLE_S16LE; break;

    88         }

    89     }

    90     else if (format.sampleSize() == 32) {

    91         switch (format.byteOrder()) {

    92             case QAudioFormat::BigEndian: spec.format = PA_SAMPLE_S32BE; break;

    93             case QAudioFormat::LittleEndian: spec.format = PA_SAMPLE_S32LE; break;

    94         }

    95     }

    96 

    97     return spec;

    98 }

    99 

   100 class PulseDaemon

   101 {

   102 public:

   103     PulseDaemon():m_prepared(false)

   104     {

   105         prepare();

   106     }

   107 

   108     ~PulseDaemon()

   109     {

   110         if (m_prepared)

   111             release();

   112     }

   113 

   114     inline void lock()

   115     {

   116         pa_threaded_mainloop_lock(m_mainLoop);

   117     }

   118 

   119     inline void unlock()

   120     {

   121         pa_threaded_mainloop_unlock(m_mainLoop);

   122     }

   123 

   124     inline pa_context *context() const

   125     {

   126         return m_context;

   127     }

   128 

   129     int volume()

   130     {

   131         return m_volume;

   132     }

   133 

   134 private:

   135     void prepare()

   136     {

   137         m_volume = 100;

   138 

   139         m_mainLoop = pa_threaded_mainloop_new();

   140         if (m_mainLoop == 0) {

   141             qWarning("PulseAudioService: unable to create pulseaudio mainloop");

   142             return;

   143         }

   144 

   145         if (pa_threaded_mainloop_start(m_mainLoop) != 0) {

   146             qWarning("PulseAudioService: unable to start pulseaudio mainloop");

   147             pa_threaded_mainloop_free(m_mainLoop);

   148             return;

   149         }

   150 

   151         m_mainLoopApi = pa_threaded_mainloop_get_api(m_mainLoop);

   152 

   153         lock();

   154         m_context = pa_context_new(m_mainLoopApi, QString("QtPulseAudio:%1").arg(::getpid()).toAscii().constData());

   155 

   156 #if(QT_MULTIMEDIA_MAEMO5)

   157         pa_context_set_state_callback(m_context, context_state_callback, this);

   158 #endif

   159         if (m_context == 0) {

   160             qWarning("PulseAudioService: Unable to create new pulseaudio context");

   161             pa_threaded_mainloop_free(m_mainLoop);

   162             return;

   163         }

   164 

   165         if (pa_context_connect(m_context, NULL, (pa_context_flags_t)0, NULL) < 0) {

   166             qWarning("PulseAudioService: pa_context_connect() failed");

   167             pa_context_unref(m_context);

   168             pa_threaded_mainloop_free(m_mainLoop);

   169             return;

   170         }

   171         unlock();

   172 

   173         m_prepared = true;

   174     }

   175 

   176     void release()

   177     {

   178         if (!m_prepared) return;

   179         pa_threaded_mainloop_stop(m_mainLoop);

   180         pa_threaded_mainloop_free(m_mainLoop);

   181         m_prepared = false;

   182     }

   183 

   184 #if(QT_MULTIMEDIA_MAEMO5)

   185     static void context_state_callback(pa_context *c, void *userdata)

   186     {

   187         PulseDaemon *self = reinterpret_cast<PulseDaemon*>(userdata);

   188         switch (pa_context_get_state(c)) {

   189             case PA_CONTEXT_CONNECTING:

   190             case PA_CONTEXT_AUTHORIZING:

   191             case PA_CONTEXT_SETTING_NAME:

   192                 break;

   193             case PA_CONTEXT_READY:

   194                 pa_ext_stream_restore_set_subscribe_cb(c, &stream_restore_monitor_callback, self);

   195                 pa_ext_stream_restore_subscribe(c, 1, NULL, self);

   196                 break;

   197             default:

   198                 break;

   199         }

   200     }

   201     static void stream_restore_monitor_callback(pa_context *c, void *userdata)

   202     {

   203         PulseDaemon *self = reinterpret_cast<PulseDaemon*>(userdata);

   204         pa_ext_stream_restore2_read(c, &stream_restore_info_callback, self);

   205     }

   206     static void stream_restore_info_callback(pa_context *c, const pa_ext_stream_restore2_info *info,

   207             int eol, void *userdata)

   208     {

   209         Q_UNUSED(c)

   210 

   211         PulseDaemon *self = reinterpret_cast<PulseDaemon*>(userdata);

   212 

   213         if (!eol) {

   214             if (QString(info->name).startsWith(QLatin1String("sink-input-by-media-role:x-maemo"))) {

   215                 const unsigned str_length = 256;

   216                 char str[str_length];

   217                 pa_cvolume_snprint(str, str_length, &info->volume);

   218                 self->m_volume = QString(str).replace(" ","").replace("%","").mid(2).toInt();

   219             }

   220         }

   221     }

   222 #endif

   223 

   224     int  m_volume;

   225     bool m_prepared;

   226     pa_context *m_context;

   227     pa_threaded_mainloop *m_mainLoop;

   228     pa_mainloop_api *m_mainLoopApi;

   229 };

   230 }

   231 

   232 Q_GLOBAL_STATIC(PulseDaemon, daemon)

   233 

   234 

   235 QSoundEffectPrivate::QSoundEffectPrivate(QObject* parent):

   236     QObject(parent),

   237     m_muted(false),

   238     m_playQueued(false),

   239     m_volume(100),

   240     m_duration(0),

   241     m_dataUploaded(0),

   242     m_state(QMediaPlayer::StoppedState),

   243     m_status(QMediaPlayer::NoMedia),

   244     m_reply(0),

   245     m_stream(0),

   246     m_networkAccessManager(0)

   247 {

   248 }

   249 

   250 QSoundEffectPrivate::~QSoundEffectPrivate()

   251 {

   252     delete m_reply;

   253     unloadSample();

   254 }

   255 

   256 qint64 QSoundEffectPrivate::duration() const

   257 {

   258     return m_duration;

   259 }

   260 

   261 int QSoundEffectPrivate::volume() const

   262 {

   263     return m_volume;

   264 }

   265 

   266 bool QSoundEffectPrivate::isMuted() const

   267 {

   268     return m_muted;

   269 }

   270 

   271 QMediaContent QSoundEffectPrivate::media() const

   272 {

   273     return m_media;

   274 }

   275 

   276 QMediaPlayer::State QSoundEffectPrivate::state() const

   277 {

   278     return m_state;

   279 }

   280 

   281 QMediaPlayer::MediaStatus QSoundEffectPrivate::mediaStatus() const

   282 {

   283     return m_status;

   284 }

   285 

   286 void QSoundEffectPrivate::play()

   287 {

   288     if (m_status == QMediaPlayer::LoadingMedia) {

   289         m_playQueued = true;

   290         return;

   291     }

   292 

   293     if (m_status != QMediaPlayer::BufferedMedia ||

   294             m_state == QMediaPlayer::PlayingState)

   295         return;

   296 

   297     pa_volume_t m_vol = PA_VOLUME_NORM;

   298 

   299     daemon()->lock();

   300 #if(QT_MULTIMEDIA_MAEMO5)

   301     m_vol = PA_VOLUME_NORM/100*((daemon()->volume()+m_volume)/2);

   302 #endif

   303     pa_operation_unref(

   304             pa_context_play_sample(daemon()->context(),

   305                 m_name.constData(),

   306                 0,

   307                 m_vol,

   308                 play_callback,

   309                 this)

   310             );

   311     daemon()->unlock();

   312 

   313     m_playbackTime.start();

   314 

   315     emit stateChanged(m_state = QMediaPlayer::PlayingState);

   316 }

   317 

   318 void QSoundEffectPrivate::stop()

   319 {

   320     emit stateChanged(m_state = QMediaPlayer::StoppedState);

   321 }

   322 

   323 void QSoundEffectPrivate::setVolume(int volume)

   324 {

   325     m_volume = volume;

   326 }

   327 

   328 void QSoundEffectPrivate::setMuted(bool muted)

   329 {

   330     m_muted = muted;

   331 }

   332 

   333 void QSoundEffectPrivate::setMedia(const QMediaContent &media)

   334 {

   335     if (media.isNull()) {

   336         m_media = QMediaContent();

   337         unloadSample();

   338         return;

   339     }

   340     if (m_media == media)

   341         return;

   342     m_media = media;

   343 

   344     if (m_networkAccessManager == 0)

   345         m_networkAccessManager = new QNetworkAccessManager(this);

   346 

   347     m_stream = m_networkAccessManager->get(QNetworkRequest(m_media.canonicalUrl()));

   348 

   349     unloadSample();

   350     loadSample();

   351 

   352     emit mediaChanged(m_media);

   353 }

   354 

   355 void QSoundEffectPrivate::decoderReady()

   356 {

   357     if (m_waveDecoder->size() >= PA_SCACHE_ENTRY_SIZE_MAX) {

   358         m_status = QMediaPlayer::InvalidMedia;

   359         emit mediaStatusChanged(m_status);

   360         qWarning("QtPulseAudio: attempting to load to large a sample");

   361         return;

   362     }

   363 

   364     if (m_name.isNull())

   365         m_name = QString("QtPulseSample-%1-%2").arg(::getpid()).arg(int(this)).toUtf8();

   366 

   367     pa_sample_spec spec = audioFormatToSampleSpec(m_waveDecoder->audioFormat());

   368 

   369     daemon()->lock();

   370     pa_stream *stream = pa_stream_new(daemon()->context(), m_name.constData(), &spec, 0);

   371     pa_stream_set_state_callback(stream, stream_state_callback, this);

   372     pa_stream_set_write_callback(stream, stream_write_callback, this);

   373     pa_stream_connect_upload(stream, (size_t)m_waveDecoder->size());

   374     daemon()->unlock();

   375 }

   376 

   377 void QSoundEffectPrivate::decoderError()

   378 {

   379     emit mediaStatusChanged(m_status = QMediaPlayer::InvalidMedia);

   380 }

   381 

   382 void QSoundEffectPrivate::checkPlayTime()

   383 {

   384     int elapsed = m_playbackTime.elapsed();

   385 

   386     if (elapsed >= m_duration) {

   387         m_state = QMediaPlayer::StoppedState;

   388         emit stateChanged(m_state);

   389     }

   390     else

   391         startTimer(m_duration - elapsed);

   392 }

   393 

   394 void QSoundEffectPrivate::loadSample()

   395 {

   396     m_waveDecoder = new WaveDecoder(m_stream);

   397     connect(m_waveDecoder, SIGNAL(formatKnown()), SLOT(decoderReady()));

   398     connect(m_waveDecoder, SIGNAL(invalidFormat()), SLOT(decoderError()));

   399 

   400     m_status = QMediaPlayer::LoadingMedia;

   401     emit mediaStatusChanged(m_status);

   402 }

   403 

   404 void QSoundEffectPrivate::unloadSample()

   405 {

   406     if (m_status != QMediaPlayer::BufferedMedia)

   407         return;

   408 

   409     m_status = QMediaPlayer::NoMedia;

   410 

   411     daemon()->lock();

   412     pa_context_remove_sample(daemon()->context(), m_name.constData(), NULL, NULL);

   413     daemon()->unlock();

   414 

   415     m_duration = 0;

   416     m_dataUploaded = 0;

   417 }

   418 

   419 void QSoundEffectPrivate::timerEvent(QTimerEvent *event)

   420 {

   421     if (m_state == QMediaPlayer::PlayingState) {

   422         m_state = QMediaPlayer::StoppedState;

   423         emit stateChanged(m_state);

   424     }

   425 

   426     killTimer(event->timerId());

   427 }

   428 

   429 void QSoundEffectPrivate::stream_write_callback(pa_stream *s, size_t length, void *userdata)

   430 {

   431     Q_UNUSED(length);

   432 

   433     QSoundEffectPrivate *self = reinterpret_cast<QSoundEffectPrivate*>(userdata);

   434 

   435     size_t bufferSize = qMin(pa_stream_writable_size(s),

   436             size_t(self->m_waveDecoder->bytesAvailable()));

   437     char buffer[bufferSize];

   438 

   439     size_t len = 0;

   440     while (len < length) {

   441         qint64 read = self->m_waveDecoder->read(buffer, qMin(bufferSize, length -len));

   442         if (read > 0) {

   443             if (pa_stream_write(s, buffer, size_t(read), 0, 0, PA_SEEK_RELATIVE) == 0)

   444                 len += size_t(read);

   445             else

   446                 break;

   447         }

   448     }

   449     self->m_dataUploaded += len;

   450 

   451     if (self->m_waveDecoder->size() == self->m_dataUploaded) {

   452         pa_stream_finish_upload(s);

   453 

   454         self->m_duration = self->m_waveDecoder->duration();

   455         emit self->durationChanged(self->m_duration);

   456 

   457         self->m_status = QMediaPlayer::BufferedMedia;

   458         emit self->mediaStatusChanged(self->m_status);

   459 

   460         self->m_waveDecoder->deleteLater();

   461         if (!self->m_media.isNull())

   462             self->m_stream->deleteLater();

   463 

   464         if (self->m_playQueued) {

   465             self->m_playQueued = false;

   466             QMetaObject::invokeMethod(self, "play");

   467         }

   468     }

   469 }

   470 

   471 void QSoundEffectPrivate::stream_state_callback(pa_stream *s, void *userdata)

   472 {

   473     QSoundEffectPrivate *self = reinterpret_cast<QSoundEffectPrivate*>(userdata);

   474 

   475     switch (pa_stream_get_state(s)) {

   476         case PA_STREAM_CREATING:

   477         case PA_STREAM_READY:

   478         case PA_STREAM_TERMINATED:

   479             break;

   480 

   481         case PA_STREAM_FAILED:

   482         default:

   483             self->m_status = QMediaPlayer::InvalidMedia;

   484             emit self->mediaStatusChanged(self->m_status);

   485             break;

   486     }

   487 }

   488 

   489 void QSoundEffectPrivate::play_callback(pa_context *c, int success, void *userdata)

   490 {

   491     Q_UNUSED(c);

   492 

   493     QSoundEffectPrivate *self = reinterpret_cast<QSoundEffectPrivate*>(userdata);

   494 

   495     if (success == 1)

   496         QMetaObject::invokeMethod(self, "checkPlayTime", Qt::QueuedConnection);

   497     else {

   498         self->m_state = QMediaPlayer::StoppedState;

   499         emit self->stateChanged(self->m_state);

   500     }

   501 }

   502