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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 <qaudioformat.h>

    55 #include <QtNetwork>

    56 #include <QTime>

    57 

    58 #include "wavedecoder_p.h"

    59 

    60 #include "qsoundeffect_pulse_p.h"

    61 

    62 #if defined(Q_WS_MAEMO_5)

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

    64 #endif

    65 

    66 #include <unistd.h>

    67 

    68 // Less than ideal

    69 #define PA_SCACHE_ENTRY_SIZE_MAX (1024*1024*16)

    70 

    71 QT_BEGIN_NAMESPACE

    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_vol;

   132     }

   133 

   134 private:

   135     void prepare()

   136     {

   137         m_vol = 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(QLatin1String("QtPulseAudio:%1")).arg(::getpid()).toAscii().constData());

   155 

   156 #if defined(Q_WS_MAEMO_5)

   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 defined(Q_WS_MAEMO_5)

   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_vol = QString(str).replace(" ","").replace("%","").mid(2).toInt();

   219             }

   220         }

   221     }

   222 #endif

   223 

   224     int  m_vol;

   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_retry(false),

   238     m_muted(false),

   239     m_playQueued(false),

   240     m_sampleLoaded(false),

   241     m_volume(100),

   242     m_duration(0),

   243     m_dataUploaded(0),

   244     m_loopCount(1),

   245     m_runningCount(0),

   246     m_reply(0),

   247     m_stream(0),

   248     m_networkAccessManager(0)

   249 {

   250 }

   251 

   252 QSoundEffectPrivate::~QSoundEffectPrivate()

   253 {

   254     m_reply->deleteLater();

   255     unloadSample();

   256 }

   257 

   258 QUrl QSoundEffectPrivate::source() const

   259 {

   260     return m_source;

   261 }

   262 

   263 void QSoundEffectPrivate::setSource(const QUrl &url)

   264 {

   265     if (url.isEmpty()) {

   266         m_source = QUrl();

   267         unloadSample();

   268         return;

   269     }

   270 

   271     m_source = url;

   272 

   273     if (m_networkAccessManager == 0)

   274         m_networkAccessManager = new QNetworkAccessManager(this);

   275 

   276     m_stream = m_networkAccessManager->get(QNetworkRequest(m_source));

   277 

   278     unloadSample();

   279     loadSample();

   280 }

   281 

   282 int QSoundEffectPrivate::loopCount() const

   283 {

   284     return m_loopCount;

   285 }

   286 

   287 void QSoundEffectPrivate::setLoopCount(int loopCount)

   288 {

   289     m_loopCount = loopCount;

   290 }

   291 

   292 int QSoundEffectPrivate::volume() const

   293 {

   294     return m_volume;

   295 }

   296 

   297 void QSoundEffectPrivate::setVolume(int volume)

   298 {

   299     m_volume = volume;

   300 }

   301 

   302 bool QSoundEffectPrivate::isMuted() const

   303 {

   304     return m_muted;

   305 }

   306 

   307 void QSoundEffectPrivate::setMuted(bool muted)

   308 {

   309     m_muted = muted;

   310 }

   311 

   312 void QSoundEffectPrivate::play()

   313 {

   314     if (m_retry) {

   315         m_retry = false;

   316         setSource(m_source);

   317         return;

   318     }

   319 

   320     if (!m_sampleLoaded) {

   321         m_playQueued = true;

   322         return;

   323     }

   324 

   325     m_runningCount += m_loopCount;

   326 

   327     playSample();

   328 }

   329 

   330 void QSoundEffectPrivate::decoderReady()

   331 {

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

   333         m_waveDecoder->deleteLater();

   334         qWarning("QSoundEffect(pulseaudio): Attempting to load to large a sample");

   335         return;

   336     }

   337 

   338     if (m_name.isNull())

   339         m_name = QString(QLatin1String("QtPulseSample-%1-%2")).arg(::getpid()).arg(quintptr(this)).toUtf8();

   340 

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

   342 

   343     daemon()->lock();

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

   345     pa_stream_set_state_callback(stream, stream_state_callback, this);

   346     pa_stream_set_write_callback(stream, stream_write_callback, this);

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

   348     m_pulseStream = stream;

   349     daemon()->unlock();

   350 }

   351 

   352 void QSoundEffectPrivate::decoderError()

   353 {

   354     qWarning("QSoundEffect(pulseaudio): Error decoding source");

   355 }

   356 

   357 void QSoundEffectPrivate::checkPlayTime()

   358 {

   359     int elapsed = m_playbackTime.elapsed();

   360 

   361     if (elapsed < m_duration)

   362         startTimer(m_duration - elapsed);

   363 }

   364 

   365 void QSoundEffectPrivate::loadSample()

   366 {

   367     m_sampleLoaded = false;

   368     m_dataUploaded = 0;

   369     m_waveDecoder = new WaveDecoder(m_stream);

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

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

   372 }

   373 

   374 void QSoundEffectPrivate::unloadSample()

   375 {

   376     if (!m_sampleLoaded)

   377         return;

   378 

   379     daemon()->lock();

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

   381     daemon()->unlock();

   382 

   383     m_duration = 0;

   384     m_dataUploaded = 0;

   385     m_sampleLoaded = false;

   386 }

   387 

   388 void QSoundEffectPrivate::uploadSample()

   389 {

   390     daemon()->lock();

   391 

   392     size_t bufferSize = qMin(pa_stream_writable_size(m_pulseStream),

   393             size_t(m_waveDecoder->bytesAvailable()));

   394     char buffer[bufferSize];

   395 

   396     size_t len = 0;

   397     while (len < (m_waveDecoder->size())) {

   398         qint64 read = m_waveDecoder->read(buffer, qMin((int)bufferSize,

   399                       (int)(m_waveDecoder->size()-len)));

   400         if (read > 0) {

   401             if (pa_stream_write(m_pulseStream, buffer, size_t(read), 0, 0, PA_SEEK_RELATIVE) == 0)

   402                 len += size_t(read);

   403             else

   404                 break;

   405         }

   406     }

   407 

   408     m_dataUploaded += len;

   409     pa_stream_set_write_callback(m_pulseStream, NULL, NULL);

   410 

   411     if (m_waveDecoder->size() == m_dataUploaded) {

   412         int err = pa_stream_finish_upload(m_pulseStream);

   413         if(err != 0) {

   414             qWarning("pa_stream_finish_upload() err=%d",err);

   415             pa_stream_disconnect(m_pulseStream);

   416             m_retry = true;

   417             m_playQueued = false;

   418             QMetaObject::invokeMethod(this, "play");

   419             daemon()->unlock();

   420             return;

   421         }

   422         m_duration = m_waveDecoder->duration();

   423         m_waveDecoder->deleteLater();

   424         m_stream->deleteLater();

   425         m_sampleLoaded = true;

   426         if (m_playQueued) {

   427             m_playQueued = false;

   428             QMetaObject::invokeMethod(this, "play");

   429         }

   430     }

   431     daemon()->unlock();

   432 }

   433 

   434 void QSoundEffectPrivate::playSample()

   435 {

   436     pa_volume_t volume = PA_VOLUME_NORM;

   437 

   438     daemon()->lock();

   439 #ifdef Q_WS_MAEMO_5

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

   441 #endif

   442     pa_operation_unref(

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

   444                 m_name.constData(),

   445                 0,

   446                 volume,

   447                 play_callback,

   448                 this)

   449             );

   450     daemon()->unlock();

   451 

   452     m_playbackTime.start();

   453 }

   454 

   455 void QSoundEffectPrivate::timerEvent(QTimerEvent *event)

   456 {

   457     if (m_runningCount > 0)

   458         playSample();

   459 

   460     killTimer(event->timerId());

   461 }

   462 

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

   464 {

   465     Q_UNUSED(length);

   466 

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

   468 

   469     QMetaObject::invokeMethod(self, "uploadSample", Qt::QueuedConnection);

   470 }

   471 

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

   473 {

   474     switch (pa_stream_get_state(s)) {

   475         case PA_STREAM_CREATING:

   476         case PA_STREAM_READY:

   477         case PA_STREAM_TERMINATED:

   478             break;

   479 

   480         case PA_STREAM_FAILED:

   481         default:

   482             qWarning("QSoundEffect(pulseaudio): Error in pulse audio stream");

   483             break;

   484     }

   485 }

   486 

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

   488 {

   489     Q_UNUSED(c);

   490 

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

   492 

   493     if (success == 1) {

   494         self->m_runningCount--;

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

   496     }

   497 }

   498 

   499 QT_END_NAMESPACE