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mpv/common/playlist.h
wm4 c0fbab7a7c player: deal with some corner cases with playlist navigation
The purpose is making accessing the current playlist entry saner when
commands are executed during initialization, termination, or after
playlist navigation commands.

For example, the "playlist_remove current" command will invalidate
playlist->current - but some things still access the playlist entry even
on uninit. Until now, checking stop_play implicitly took care of it, so
it worked, but it was still messy.

Introduce the mpctx->playing field, which points to the current playlist
entry, even if the entry was removed and/or the playlist's current entry
was moved (e.g. due to playlist navigation).
2014-09-09 01:23:10 +02:00

100 lines
3.7 KiB
C

/*
* This file is part of mplayer.
*
* mplayer 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.
*
* mplayer 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 mplayer. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MPLAYER_PLAYLIST_H
#define MPLAYER_PLAYLIST_H
#include <stdbool.h>
#include "misc/bstr.h"
struct playlist_param {
bstr name, value;
};
struct playlist_entry {
struct playlist_entry *prev, *next;
struct playlist *pl;
char *filename;
struct playlist_param *params;
int num_params;
// Set to true if playback didn't seem to work, or if the file could be
// played only for a very short time. This is used to make playlist
// navigation just work in case the user has unplayable files in the
// playlist.
bool playback_short : 1;
// Set to true if not at least 1 frame (audio or video) could be played.
bool init_failed : 1;
// Entry was removed with playlist_remove (etc.), but not deallocated.
bool removed : 1;
// Additional refcount. Normally (reserved==0), the entry is owned by the
// playlist, and this can be used to keep the entry alive.
int reserved;
// Used to reject loading of unsafe entries from external playlists.
// Can have any of the following bit flags set:
// STREAM_SAFE_ONLY: only allow streams marked with is_safe
// STREAM_NETWORK_ONLY: only allow streams marked with is_network
// The value 0 allows everything.
int stream_flags;
};
struct playlist {
struct playlist_entry *first, *last;
// This provides some sort of stable iterator. If this entry is removed from
// the playlist, current is set to the next element (or NULL), and
// current_was_replaced is set to true.
struct playlist_entry *current;
bool current_was_replaced;
};
void playlist_entry_add_param(struct playlist_entry *e, bstr name, bstr value);
void playlist_entry_add_params(struct playlist_entry *e,
struct playlist_param *params,
int params_count);
struct playlist_entry *playlist_entry_new(const char *filename);
void playlist_insert(struct playlist *pl, struct playlist_entry *after,
struct playlist_entry *add);
void playlist_add(struct playlist *pl, struct playlist_entry *add);
void playlist_remove(struct playlist *pl, struct playlist_entry *entry);
void playlist_clear(struct playlist *pl);
void playlist_move(struct playlist *pl, struct playlist_entry *entry,
struct playlist_entry *at);
void playlist_add_file(struct playlist *pl, const char *filename);
void playlist_shuffle(struct playlist *pl);
struct playlist_entry *playlist_get_next(struct playlist *pl, int direction);
void playlist_add_base_path(struct playlist *pl, bstr base_path);
void playlist_transfer_entries(struct playlist *pl, struct playlist *source_pl);
void playlist_append_entries(struct playlist *pl, struct playlist *source_pl);
int playlist_entry_to_index(struct playlist *pl, struct playlist_entry *e);
int playlist_entry_count(struct playlist *pl);
struct playlist_entry *playlist_entry_from_index(struct playlist *pl, int index);
struct mpv_global;
struct playlist *playlist_parse_file(const char *file, struct mpv_global *global);
void playlist_entry_unref(struct playlist_entry *e);
#endif