Initial commit.

src/covermanager/coverproviders.cpp

@@ -0,0 +1,72 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#include "config.h"
+
+#include "coverprovider.h"
+#include "coverproviders.h"
+
+#include "core/logging.h"
+
+CoverProviders::CoverProviders(QObject *parent) : QObject(parent) {}
+
+void CoverProviders::AddProvider(CoverProvider *provider) {
+
+  {
+    QMutexLocker locker(&mutex_);
+    cover_providers_.insert(provider, provider->name());
+    connect(provider, SIGNAL(destroyed()), SLOT(ProviderDestroyed()));
+  }
+
+  qLog(Debug) << "Registered cover provider" << provider->name();
+
+}
+
+void CoverProviders::RemoveProvider(CoverProvider *provider) {
+
+  if (!provider) return;
+
+  // It's not safe to dereference provider at this pointbecause it might have
+  // already been destroyed.
+
+  QString name;
+
+  {
+    QMutexLocker locker(&mutex_);
+    name = cover_providers_.take(provider);
+  }
+
+  if (name.isNull()) {
+    qLog(Debug) << "Tried to remove a cover provider that was not registered";
+  }
+  else {
+    qLog(Debug) << "Unregistered cover provider" << name;
+  }
+
+}
+
+void CoverProviders::ProviderDestroyed() {
+
+  CoverProvider *provider = static_cast<CoverProvider*>(sender());
+  RemoveProvider(provider);
+
+}
+
+int CoverProviders::NextId() { return next_id_.fetchAndAddRelaxed(1); }