mpv: add metadata handling

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>

kaffeine/src/player-parts/libmpv-part/libmpv_event.cpp

@@ -41,7 +41,7 @@ MpvEventThread::MpvEventThread(MpvPart *part) {
 void MpvEventThread::initPropertyObservers() {
     mpv_observe_property(m_part->m_mpv, 0, "time-pos",    MPV_FORMAT_DOUBLE);
     mpv_observe_property(m_part->m_mpv, 0, "duration",    MPV_FORMAT_DOUBLE);
-    mpv_observe_property(m_part->m_mpv, 0, "media-title", MPV_FORMAT_STRING);
+    mpv_observe_property(m_part->m_mpv, 0, "metadata",    MPV_FORMAT_NONE);
 
     // "The advantage over using this instead of calculating it out of other
     // properties is that it properly falls back to estimating the playback

kaffeine/src/player-parts/libmpv-part/libmpv_part.cpp

@@ -246,6 +246,7 @@ void MpvPart::updatePlaytime(TQTime time) {
 void MpvPart::customEvent(TQCustomEvent *event) {
     if (event->type() == MPVPART_EVENT_PROPERTY_CHANGE) {
         MpvPropertyChangeEvent *pe = (MpvPropertyChangeEvent *)event;
+
         if (pe->property() == "time-pos" && pe->format() == MPV_FORMAT_DOUBLE) {
             m_time = pe->toTime();
             updatePlaytime(m_time);
@@ -264,6 +265,10 @@ void MpvPart::customEvent(TQCustomEvent *event) {
                 emit signalNewMeta(m_mrl);
             }
         }
+
+        else if (pe->property() == "metadata") {
+            updateMetadata();
+        }
     }
 
     else if (event->type() == MPVPART_EVENT_EOF) {
@@ -769,9 +774,59 @@ void MpvPart::hideContextMenu() {
     }
 }
 
+void MpvPart::updateMetadata() {
+    if (!m_mpv) return;
+
+    kdDebug() << "update metadata" << endl;
+
+    // Errors reading metadata are not fatal, as this is not something that
+    // the user explicitly requests
+    mpv_node result;
+    if (mpv_get_property(m_mpv, "metadata", MPV_FORMAT_NODE, &result) < 0) {
+        kdWarning() << "mpv: error reading metadata" << endl;
+        return;
+    }
+
+    if (result.format != MPV_FORMAT_NODE_MAP) {
+        kdWarning() << "mpv: wrong metadata format" << endl;
+        return;
+    }
+
+    mpv_node_list *map = result.u.list;
+
+    for (int i = 0; i < map->num; ++i) {
+        TQString key(map->keys[i]);
+        TQString value = TQString::fromUtf8(map->values[i].u.string);
+        if (key == "title" || key == "icy-name") {
+            m_mrl.setTitle(value);
+        }
+        else if (key == "artist") {
+            m_mrl.setArtist(value);
+        }
+        else if (key == "album") {
+            m_mrl.setAlbum(value);
+        }
+        else if (key == "track" || key == "icy-title") {
+            m_mrl.setTrack(value);
+        }
+        else if (key == "date") {
+            m_mrl.setYear(value);
+        }
+        else if (key == "genre" || key == "icy-genre") {
+            m_mrl.setGenre(value);
+        }
+        else if (key == "comment" || key == "icy-description") {
+            m_mrl.setComment(value);
+        }
+        kdDebug() << "e " << map->keys[i] << ": " << map->values[i].u.string << endl;
+    }
+
+    mpv_free_node_contents(&result);
+}
+
 #define THROW_ERROR(msg, details) \
     kdError() << "mpv: " << msg << " (" << details << ")" << endl; \
-    KMessageBox::detailedError(nullptr, i18n(msg), details); \
+    KMessageBox::detailedError(nullptr, i18n(msg), details);
 
 #define THROW_ERROR_FREE(msg, details) \
     THROW_ERROR(msg, details) \
@@ -852,7 +907,6 @@ data = result.u.list->values[4].u.ba;
         }
     }
 
-
     // Try to launch ksnapshot
     TQString ksError;
     TQCString ksDcop;

kaffeine/src/player-parts/libmpv-part/libmpv_part.h

@@ -119,6 +119,8 @@ class MpvPart : public KaffeinePart
 
         void slotTogglePlaytimeMode();
 
+        void updateMetadata();
+
     signals:
         void mpvEvents();