Add track intro mode

This repeat mode plays the beginning of each track, good for quickly getting a feel for a new album for example.

ext/libclementine-remote/remotecontrolmessages.proto

@@ -127,6 +127,7 @@ enum RepeatMode {
   Repeat_Album = 2;
   Repeat_Playlist = 3;
   Repeat_OneByOne = 4;
+  Repeat_Intro = 5;
 }
 
 // Valid Shuffle modes

src/core/player.cpp

@@ -589,6 +589,8 @@ void Player::TrackAboutToEnd() {
                            next_item->Metadata().end_nanosec());
 }
 
+void Player::IntroPointReached() { NextInternal(Engine::Intro); }
+
 void Player::ValidSongRequested(const QUrl& url) {
   emit SongChangeRequestProcessed(url, true);
 }

src/core/player.h

@@ -92,7 +92,7 @@ class PlayerInterface : public QObject {
   virtual void Play() = 0;
   virtual void ShowOSD() = 0;
 
- signals:
+signals:
   void Playing();
   void Paused();
   void Stopped();
@@ -163,6 +163,7 @@ class Player : public PlayerInterface {
   void Pause();
   void Stop(bool stop_after = false);
   void StopAfterCurrent();
+  void IntroPointReached();
   void Play();
   void ShowOSD();
   void TogglePrettyOSD();

src/engines/engine_fwd.h

@@ -27,6 +27,7 @@ enum TrackChangeType {
   First = 0x01,
   Manual = 0x02,
   Auto = 0x04,
+  Intro = 0x08,
 
   // Any of:
   SameAlbum = 0x10,

src/engines/gstengine.cpp

@@ -302,8 +302,8 @@ void GstEngine::UpdateScope(int chunk_length) {
   gst_buffer_map(latest_buffer_, &map, GST_MAP_READ);
 
   // determine where to split the buffer
-  int chunk_density = (map.size * kNsecPerMsec) /
-                      GST_BUFFER_DURATION(latest_buffer_);
+  int chunk_density =
+      (map.size * kNsecPerMsec) / GST_BUFFER_DURATION(latest_buffer_);
 
   int chunk_size = chunk_length * chunk_density;
 
@@ -321,10 +321,9 @@ void GstEngine::UpdateScope(int chunk_length) {
 
   // make sure we don't go beyond the end of the buffer
   if (scope_chunk_ == scope_chunks_ - 1) {
-    bytes =
-        qMin(static_cast<Engine::Scope::size_type>(
-                 map.size - (chunk_size * scope_chunk_)),
-             scope_.size() * sizeof(sample_type));
+    bytes = qMin(static_cast<Engine::Scope::size_type>(
+                     map.size - (chunk_size * scope_chunk_)),
+                 scope_.size() * sizeof(sample_type));
   } else {
     bytes = qMin(static_cast<Engine::Scope::size_type>(chunk_size),
                  scope_.size() * sizeof(sample_type));
@@ -380,7 +379,9 @@ bool GstEngine::Load(const QUrl& url, Engine::TrackChangeFlags change,
 
   bool crossfade =
       current_pipeline_ && ((crossfade_enabled_ && change & Engine::Manual) ||
-                            (autocrossfade_enabled_ && change & Engine::Auto));
+                            (autocrossfade_enabled_ && change & Engine::Auto) ||
+                            ((crossfade_enabled_ || autocrossfade_enabled_) &&
+                             change & Engine::Intro));
 
   if (change & Engine::Auto && change & Engine::SameAlbum &&
       !crossfade_same_album_)
@@ -767,9 +768,8 @@ GstEngine::PluginDetailsList GstEngine::GetPluginList(
     if (QString(gst_element_factory_get_klass(factory)).contains(classname)) {
       PluginDetails details;
       details.name = QString::fromUtf8(gst_plugin_feature_get_name(p->data));
-      details.description = QString::fromUtf8(
-          gst_element_factory_get_metadata(factory,
-                                           GST_ELEMENT_METADATA_DESCRIPTION));
+      details.description = QString::fromUtf8(gst_element_factory_get_metadata(
+          factory, GST_ELEMENT_METADATA_DESCRIPTION));
       ret << details;
     }
     p = g_list_next(p);

src/networkremote/outgoingdatacreator.cpp

@@ -79,10 +79,8 @@ void OutgoingDataCreator::SetClients(QList<RemoteClient*>* clients) {
           SLOT(ResultsAvailable(int, SearchProvider::ResultList)),
           Qt::QueuedConnection);
 
-  connect(app_->global_search(),
-          SIGNAL(SearchFinished(int)),
-          SLOT(SearchFinished(int)),
-          Qt::QueuedConnection);
+  connect(app_->global_search(), SIGNAL(SearchFinished(int)),
+          SLOT(SearchFinished(int)), Qt::QueuedConnection);
 }
 
 void OutgoingDataCreator::CheckEnabledProviders() {
@@ -379,9 +377,11 @@ void OutgoingDataCreator::CreateSong(const Song& song, const QImage& art,
     song_metadata->set_file_size(song.filesize());
     song_metadata->set_rating(song.rating());
     song_metadata->set_url(DataCommaSizeFromQString(song.url().toString()));
-    song_metadata->set_art_automatic(DataCommaSizeFromQString(song.art_automatic()));
+    song_metadata->set_art_automatic(
+        DataCommaSizeFromQString(song.art_automatic()));
     song_metadata->set_art_manual(DataCommaSizeFromQString(song.art_manual()));
-    song_metadata->set_type(static_cast< ::pb::remote::SongMetadata_Type>(song.filetype()));
+    song_metadata->set_type(
+        static_cast<::pb::remote::SongMetadata_Type>(song.filetype()));
 
     // Append coverart
     if (!art.isNull()) {
@@ -506,6 +506,9 @@ void OutgoingDataCreator::SendRepeatMode(PlaylistSequence::RepeatMode mode) {
     case PlaylistSequence::Repeat_OneByOne:
       msg.mutable_repeat()->set_repeat_mode(pb::remote::Repeat_OneByOne);
       break;
+    case PlaylistSequence::Repeat_Intro:
+      msg.mutable_repeat()->set_repeat_mode(pb::remote::Repeat_Intro);
+      break;
   }
 
   SendDataToClients(&msg);
@@ -673,7 +676,8 @@ void OutgoingDataCreator::DoGlobalSearch(const QString& query,
 
   // Send status message
   pb::remote::Message msg;
-  pb::remote::ResponseGlobalSearchStatus* status = msg.mutable_response_global_search_status();
+  pb::remote::ResponseGlobalSearchStatus* status =
+      msg.mutable_response_global_search_status();
 
   msg.set_type(pb::remote::GLOBAL_SEARCH_STATUS);
   status->set_id(id);
@@ -718,7 +722,8 @@ void OutgoingDataCreator::ResultsAvailable(
 
   client->SendData(&msg);
 
-  qLog(Debug) << "ResultsAvailable" << id << results.first().provider_->name() << results.size();
+  qLog(Debug) << "ResultsAvailable" << id << results.first().provider_->name()
+              << results.size();
 }
 
 void OutgoingDataCreator::SearchFinished(int id) {
@@ -728,7 +733,8 @@ void OutgoingDataCreator::SearchFinished(int id) {
 
   // Send status message
   pb::remote::Message msg;
-  pb::remote::ResponseGlobalSearchStatus* status = msg.mutable_response_global_search_status();
+  pb::remote::ResponseGlobalSearchStatus* status =
+      msg.mutable_response_global_search_status();
 
   msg.set_type(pb::remote::GLOBAL_SEARCH_STATUS);
   status->set_id(req.id_);

src/playlist/playlist.cpp

@@ -563,6 +563,7 @@ int Playlist::next_row(bool ignore_repeat_track) const {
 
     switch (playlist_sequence_->repeat_mode()) {
       case PlaylistSequence::Repeat_Off:
+      case PlaylistSequence::Repeat_Intro:
         return -1;
       case PlaylistSequence::Repeat_Track:
         next_virtual_index = current_virtual_index_;

src/playlist/playlistsequence.cpp

@@ -53,6 +53,7 @@ PlaylistSequence::PlaylistSequence(QWidget* parent, SettingsProvider* settings)
   repeat_group->addAction(ui_->action_repeat_album);
   repeat_group->addAction(ui_->action_repeat_playlist);
   repeat_group->addAction(ui_->action_repeat_onebyone);
+  repeat_group->addAction(ui_->action_repeat_intro);
   repeat_menu_->addActions(repeat_group->actions());
   ui_->repeat->setMenu(repeat_menu_);
 
@@ -120,6 +121,7 @@ void PlaylistSequence::RepeatActionTriggered(QAction* action) {
   if (action == ui_->action_repeat_album) mode = Repeat_Album;
   if (action == ui_->action_repeat_playlist) mode = Repeat_Playlist;
   if (action == ui_->action_repeat_onebyone) mode = Repeat_OneByOne;
+  if (action == ui_->action_repeat_intro) mode = Repeat_Intro;
 
   SetRepeatMode(mode);
 }
@@ -152,6 +154,9 @@ void PlaylistSequence::SetRepeatMode(RepeatMode mode) {
     case Repeat_OneByOne:
       ui_->action_repeat_onebyone->setChecked(true);
       break;
+    case Repeat_Intro:
+      ui_->action_repeat_intro->setChecked(true);
+      break;
   }
 
   if (mode != repeat_mode_) {
@@ -245,6 +250,9 @@ void PlaylistSequence::CycleRepeatMode() {
       mode = Repeat_OneByOne;
       break;
     case Repeat_OneByOne:
+      mode = Repeat_Intro;
+      break;
+    case Repeat_Intro:
       break;
   }
 

src/playlist/playlistsequence.h

@@ -41,6 +41,7 @@ class PlaylistSequence : public QWidget {
     Repeat_Album = 2,
     Repeat_Playlist = 3,
     Repeat_OneByOne = 4,
+    Repeat_Intro = 5,
   };
   enum ShuffleMode {
     Shuffle_Off = 0,

src/playlist/playlistsequence.ui

@@ -106,6 +106,14 @@
     <string>Stop after each track</string>
    </property>
   </action>
+  <action name="action_repeat_intro">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Intro tracks</string>
+   </property>
+  </action>
   <action name="action_shuffle_off">
    <property name="checkable">
     <bool>true</bool>

src/ui/mainwindow.cpp

@@ -494,6 +494,8 @@ MainWindow::MainWindow(Application* app, SystemTrayIcon* tray_icon, OSD* osd,
   connect(app_->player(), SIGNAL(Seeked(qlonglong)), SLOT(Seeked(qlonglong)));
   connect(app_->player(), SIGNAL(TrackSkipped(PlaylistItemPtr)),
           SLOT(TrackSkipped(PlaylistItemPtr)));
+  connect(this, SIGNAL(IntroPointReached()), app_->player(),
+          SLOT(IntroPointReached()));
   connect(app_->player(), SIGNAL(VolumeChanged(int)), SLOT(VolumeChanged(int)));
 
   connect(app_->player(), SIGNAL(Paused()), ui_->playlist,
@@ -1338,6 +1340,13 @@ void MainWindow::UpdateTrackPosition() {
     }
   }
 
+  // (just after) the scrobble point is a good point to change tracks in intro mode
+  if (position >= scrobble_point + 5) {
+    if (playlist->sequence()->repeat_mode() == PlaylistSequence::Repeat_Intro) {
+      emit IntroPointReached();
+    }
+  }
+
   // Update the tray icon every 10 seconds
   if (position % 10 == 0) {
     qLog(Debug) << "position" << position << "scrobble point" << scrobble_point

src/ui/mainwindow.h

@@ -137,6 +137,8 @@ signals:
   // Signals that stop playing after track was toggled.
   void StopAfterToggled(bool stop);
 
+  void IntroPointReached();
+
  private slots:
   void FilePathChanged(const QString& path);
 

src/widgets/osd.cpp

@@ -317,6 +317,9 @@ void OSD::RepeatModeChanged(PlaylistSequence::RepeatMode mode) {
       case PlaylistSequence::Repeat_OneByOne:
         current_mode = tr("Stop after every track");
         break;
+      case PlaylistSequence::Repeat_Intro:
+        current_mode = tr("Intro tracks");
+        break;
     }
     ShowMessage(QCoreApplication::applicationName(), current_mode);
   }