Clementine-audio-player-Mac.../src/moodbar/moodbarpipeline.h

70 lines
1.9 KiB
C++

/* This file is part of Clementine.
Copyright 2012, 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/>.
*/
#ifndef MOODBARPIPELINE_H
#define MOODBARPIPELINE_H
#include <QObject>
#include <QUrl>
#include <gst/gst.h>
#include <gst/app/gstappsink.h>
// Creates moodbar data for a single local music file.
class MoodbarPipeline : public QObject {
Q_OBJECT
public:
MoodbarPipeline(const QUrl& local_filename);
~MoodbarPipeline();
static bool IsAvailable();
bool success() const { return success_; }
const QByteArray& data() const { return data_; }
public slots:
void Start();
signals:
void Finished(bool success);
private:
GstElement* CreateElement(const QString& factory_name);
void ReportError(GstMessage* message);
void Stop(bool success);
void Cleanup();
static void NewPadCallback(GstElement*, GstPad* pad, gpointer data);
static GstFlowReturn NewBufferCallback(GstAppSink* app_sink, gpointer self);
static gboolean BusCallback(GstBus*, GstMessage* msg, gpointer data);
static GstBusSyncReply BusCallbackSync(GstBus*, GstMessage* msg, gpointer data);
private:
static bool sIsAvailable;
QUrl local_filename_;
GstElement* pipeline_;
GstElement* convert_element_;
bool success_;
QByteArray data_;
};
#endif // MOODBARPIPELINE_H