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-/*
- * Copyright (C) 2003-2013 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * 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 2 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, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifndef MPD_PLAYLIST_HXX
-#define MPD_PLAYLIST_HXX
-
-#include "Queue.hxx"
-#include "PlaylistError.hxx"
-
-struct PlayerControl;
-struct Song;
-
-struct playlist {
- /**
- * The song queue - it contains the "real" playlist.
- */
- struct Queue queue;
-
- /**
- * This value is true if the player is currently playing (or
- * should be playing).
- */
- bool playing;
-
- /**
- * If true, then any error is fatal; if false, MPD will
- * attempt to play the next song on non-fatal errors. During
- * seeking, this flag is set.
- */
- bool stop_on_error;
-
- /**
- * If true, then a bulk edit has been initiated by
- * BeginBulk(), and UpdateQueuedSong() and OnModified() will
- * be postponed until CommitBulk()
- */
- bool bulk_edit;
-
- /**
- * Has the queue been modified during bulk edit mode?
- */
- bool bulk_modified;
-
- /**
- * Number of errors since playback was started. If this
- * number exceeds the length of the playlist, MPD gives up,
- * because all songs have been tried.
- */
- unsigned error_count;
-
- /**
- * The "current song pointer". This is the song which is
- * played when we get the "play" command. It is also the song
- * which is currently being played.
- */
- int current;
-
- /**
- * The "next" song to be played, when the current one
- * finishes. The decoder thread may start decoding and
- * buffering it, while the "current" song is still playing.
- *
- * This variable is only valid if #playing is true.
- */
- int queued;
-
- playlist(unsigned max_length)
- :queue(max_length), playing(false),
- bulk_edit(false),
- current(-1), queued(-1) {
- }
-
- ~playlist() {
- }
-
- uint32_t GetVersion() const {
- return queue.version;
- }
-
- unsigned GetLength() const {
- return queue.GetLength();
- }
-
- unsigned PositionToId(unsigned position) const {
- return queue.PositionToId(position);
- }
-
- gcc_pure
- int GetCurrentPosition() const;
-
- gcc_pure
- int GetNextPosition() const;
-
- /**
- * Returns the song object which is currently queued. Returns
- * none if there is none (yet?) or if MPD isn't playing.
- */
- gcc_pure
- const Song *GetQueuedSong() const;
-
- /**
- * This is the "PLAYLIST" event handler. It is invoked by the
- * player thread whenever it requests a new queued song, or
- * when it exits.
- */
- void SyncWithPlayer(PlayerControl &pc);
-
-protected:
- /**
- * Called by all editing methods after a modification.
- * Updates the queue version and emits #IDLE_PLAYLIST.
- */
- void OnModified();
-
- /**
- * Updates the "queued song". Calculates the next song
- * according to the current one (if MPD isn't playing, it
- * takes the first song), and queues this song. Clears the
- * old queued song if there was one.
- *
- * @param prev the song which was previously queued, as
- * determined by playlist_get_queued_song()
- */
- void UpdateQueuedSong(PlayerControl &pc, const Song *prev);
-
-public:
- void BeginBulk();
- void CommitBulk(PlayerControl &pc);
-
- void Clear(PlayerControl &pc);
-
- /**
- * A tag in the play queue has been modified by the player
- * thread. Apply the given song's tag to the current song if
- * the song matches.
- */
- void TagModified(Song &&song);
-
- /**
- * The database has been modified. Pull all updates.
- */
- void DatabaseModified();
-
- PlaylistResult AppendSong(PlayerControl &pc,
- Song *song,
- unsigned *added_id=nullptr);
-
- /**
- * Appends a local file (outside the music database) to the
- * playlist.
- *
- * Note: the caller is responsible for checking permissions.
- */
- PlaylistResult AppendFile(PlayerControl &pc,
- const char *path_utf8,
- unsigned *added_id=nullptr);
-
- PlaylistResult AppendURI(PlayerControl &pc,
- const char *uri_utf8,
- unsigned *added_id=nullptr);
-
-protected:
- void DeleteInternal(PlayerControl &pc,
- unsigned song, const Song **queued_p);
-
-public:
- PlaylistResult DeletePosition(PlayerControl &pc,
- unsigned position);
-
- PlaylistResult DeleteOrder(PlayerControl &pc,
- unsigned order) {
- return DeletePosition(pc, queue.OrderToPosition(order));
- }
-
- PlaylistResult DeleteId(PlayerControl &pc, unsigned id);
-
- /**
- * Deletes a range of songs from the playlist.
- *
- * @param start the position of the first song to delete
- * @param end the position after the last song to delete
- */
- PlaylistResult DeleteRange(PlayerControl &pc,
- unsigned start, unsigned end);
-
- void DeleteSong(PlayerControl &pc, const Song &song);
-
- void Shuffle(PlayerControl &pc, unsigned start, unsigned end);
-
- PlaylistResult MoveRange(PlayerControl &pc,
- unsigned start, unsigned end, int to);
-
- PlaylistResult MoveId(PlayerControl &pc, unsigned id, int to);
-
- PlaylistResult SwapPositions(PlayerControl &pc,
- unsigned song1, unsigned song2);
-
- PlaylistResult SwapIds(PlayerControl &pc,
- unsigned id1, unsigned id2);
-
- PlaylistResult SetPriorityRange(PlayerControl &pc,
- unsigned start_position,
- unsigned end_position,
- uint8_t priority);
-
- PlaylistResult SetPriorityId(PlayerControl &pc,
- unsigned song_id, uint8_t priority);
-
- void Stop(PlayerControl &pc);
-
- PlaylistResult PlayPosition(PlayerControl &pc, int position);
-
- void PlayOrder(PlayerControl &pc, int order);
-
- PlaylistResult PlayId(PlayerControl &pc, int id);
-
- void PlayNext(PlayerControl &pc);
-
- void PlayPrevious(PlayerControl &pc);
-
- PlaylistResult SeekSongPosition(PlayerControl &pc,
- unsigned song_position,
- float seek_time);
-
- PlaylistResult SeekSongId(PlayerControl &pc,
- unsigned song_id, float seek_time);
-
- /**
- * Seek within the current song. Fails if MPD is not currently
- * playing.
- *
- * @param time the time in seconds
- * @param relative if true, then the specified time is relative to the
- * current position
- */
- PlaylistResult SeekCurrent(PlayerControl &pc,
- float seek_time, bool relative);
-
- bool GetRepeat() const {
- return queue.repeat;
- }
-
- void SetRepeat(PlayerControl &pc, bool new_value);
-
- bool GetRandom() const {
- return queue.random;
- }
-
- void SetRandom(PlayerControl &pc, bool new_value);
-
- bool GetSingle() const {
- return queue.single;
- }
-
- void SetSingle(PlayerControl &pc, bool new_value);
-
- bool GetConsume() const {
- return queue.consume;
- }
-
- void SetConsume(bool new_value);
-};
-
-#endif