/* Copyright (C) 2011 Lucio Carreras
*
* This file is part of sayonara player
*
* This program 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.
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PLAYLIST_H_
#define PLAYLIST_H_
#include <iostream>
#include <QObject>
#include <QList>
#include <QMap>
#include <QStringList>
#include "HelperStructs/MetaData.h"
#include "HelperStructs/PlaylistMode.h"
#include "HelperStructs/globals.h"
#include "HelperStructs/CSettingsStorage.h"
class Playlist : public QObject {
Q_OBJECT
public:
Playlist(QObject * parent=0);
virtual ~Playlist() {}
virtual uint get_num_tracks() {
return m_meta.size();
}
virtual void get_metadata(MetaDataList&);
signals:
// New playlist (for displaying in ui_playlist)
void sig_playlist_updated(MetaDataList&, int playidx, int/*unused*/);
// Inform the ui_playlist about what row to highlight
void sig_playing_track_changed(int row);
// Current track info for displaying in the control area
void sig_track_metadata(const MetaData&);
// Make sure we have the latest state of the world
void sig_sync();
// These request action from the audio part
void sig_stop();
void sig_pause();
void sig_resume_play();
void sig_forward();
void sig_backward();
// Only connect in OHPlaylist mode
void sig_mode_changed(Playlist_Mode);
// These report a state transition of the audio part
void sig_stopped();
void sig_paused();
void sig_playing();
// Done inserting tracks in the playlist
void insertDone();
public slots:
virtual void psl_insert_tracks(const MetaDataList&, int afteridx) = 0;
virtual void psl_add_tracks(const MetaDataList&);
virtual void psl_load_playlist();
virtual void psl_save_playlist();
virtual void psl_change_track(int num) {
m_insertion_point = -1;
psl_change_track_impl(num);
}
virtual void psl_change_track_impl(int) = 0;
virtual void psl_new_transport_state(int, const char *);
// Mode change requested by UI
virtual void psl_change_mode(const Playlist_Mode&);
virtual void psl_clear_playlist();
virtual void psl_clear_playlist_impl() = 0;
virtual void psl_play() = 0;
virtual void psl_pause() = 0;
virtual void psl_stop() = 0;
virtual void psl_forward() = 0;
virtual void psl_backward() = 0;
// Note: in openhome mode, drag-dropping a selection containing
// the currently playing track results in a track change because
// this is seen as 2 separate remove/insert operations. After the
// remove, the playing track has changed, and there is no way to
// restore it when the insert occurs. We would need additional
// input from the playlist ui which is the only code with the info
// to link the remove/insert ops. Even then, it would be
// complicated to restore the right playing track because we'd
// have to wait for the playlist update from the remote player to
// do it. Even them this would cause the sound to flicker. It
// seems that the only option is to acknowledge the issue. We now stop
// playing in this situation (when removing the currently playing track)
virtual void psl_remove_rows(const QList<int> &, bool select_next=true)
= 0;
virtual void psl_selection_min_row(int);
protected:
MetaDataList m_meta;
int m_play_idx;
int m_selection_min_row;
int m_insertion_point;
int m_tpstate;
bool m_pause;
virtual void remove_row(int row);
virtual bool valid_row(int row) {
return row >= 0 && row < int(m_meta.size());
}
};
#endif /* PLAYLIST_H_ */