Clementine-audio-player-Mac.../src/covers/coverproviders.cpp

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/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine 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.
Clementine 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 Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "coverprovider.h"
#include "coverproviders.h"
#include "core/logging.h"
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CoverProviders::CoverProviders(QObject* parent)
: QObject(parent) {
}
void CoverProviders::AddProvider(CoverProvider* provider) {
{
QMutexLocker locker(&mutex_);
cover_providers_.insert(provider, provider->name());
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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);
}