78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/* This file is part of Clementine.
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Copyright 2012, David Sansome <me@davidsansome.com>
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MOODBARPIPELINE_H
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#define MOODBARPIPELINE_H
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#include <gst/app/gstappsink.h>
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#include <gst/gst.h>
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#include <QObject>
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#include <QUrl>
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#include <memory>
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class MoodbarBuilder;
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// Creates moodbar data for a single local music file.
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class MoodbarPipeline : public QObject {
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Q_OBJECT
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public:
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MoodbarPipeline(const QUrl& local_filename);
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~MoodbarPipeline();
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static bool IsAvailable();
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bool success() const { return success_; }
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const QByteArray& data() const { return data_; }
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public slots:
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void Start();
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signals:
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void Finished(bool success);
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private:
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GstElement* CreateElement(const QString& factory_name);
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void ReportError(GstMessage* message);
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void Stop(bool success);
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void Cleanup();
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static void NewPadCallback(GstElement*, GstPad* pad, gpointer data);
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static GstFlowReturn NewBufferCallback(GstAppSink* app_sink, gpointer self);
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static gboolean BusCallback(GstBus*, GstMessage* msg, gpointer data);
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static GstBusSyncReply BusCallbackSync(GstBus*, GstMessage* msg,
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gpointer data);
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private:
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static bool sIsAvailable;
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static const int kBands;
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QUrl local_filename_;
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GstElement* pipeline_;
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GstElement* convert_element_;
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std::unique_ptr<MoodbarBuilder> builder_;
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bool success_;
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bool running_;
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QByteArray data_;
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};
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#endif // MOODBARPIPELINE_H
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