apps/playlist.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by wavey@wavey.org
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #ifndef __PLAYLIST_H__
  21 #define __PLAYLIST_H__
  22
  23 #include <stdbool.h>
  24 #include "file.h"
  25 #include "kernel.h"
  26 #include "id3.h"
  27
  28 #define PLAYLIST_ATTR_QUEUED    0x01
  29 #define PLAYLIST_ATTR_INSERTED  0x02
  30 #define PLAYLIST_ATTR_SKIPPED   0x04
  31 #define PLAYLIST_MAX_CACHE      16
  32
  33 #define DEFAULT_DYNAMIC_PLAYLIST_NAME "/dynamic.m3u"
  34
  35 enum playlist_command {
  36     PLAYLIST_COMMAND_PLAYLIST,
  37     PLAYLIST_COMMAND_ADD,
  38     PLAYLIST_COMMAND_QUEUE,
  39     PLAYLIST_COMMAND_DELETE,
  40     PLAYLIST_COMMAND_SHUFFLE,
  41     PLAYLIST_COMMAND_UNSHUFFLE,
  42     PLAYLIST_COMMAND_RESET,
  43     PLAYLIST_COMMAND_COMMENT
  44 };
  45
  46 enum {
  47     PLAYLIST_PREPEND = -1,
  48     PLAYLIST_INSERT = -2,
  49     PLAYLIST_INSERT_LAST = -3,
  50     PLAYLIST_INSERT_FIRST = -4,
  51     PLAYLIST_INSERT_SHUFFLED = -5
  52 };
  53
  54 enum {
  55     PLAYLIST_DELETE_CURRENT = -1
  56 };
  57
  58 struct playlist_control_cache {
  59     enum playlist_command command;
  60     int i1;
  61     int i2;
  62     const char* s1;
  63     const char* s2;
  64     void* data;
  65 };
  66
  67 struct playlist_info
  68 {
  69     bool current;        /* current playing playlist                */
  70     char filename[MAX_PATH];  /* path name of m3u playlist on disk  */
  71     char control_filename[MAX_PATH]; /* full path of control file   */
  72     int  fd;             /* descriptor of the open playlist file    */
  73     int  control_fd;     /* descriptor of the open control file     */
  74     bool control_created; /* has control file been created?         */
  75     int  dirlen;         /* Length of the path to the playlist file */
  76     unsigned long *indices; /* array of indices                     */
  77     const struct dircache_entry **filenames; /* Entries from dircache */
  78     int  max_playlist_size; /* Max number of files in playlist. Mirror of
  79                               global_settings.max_files_in_playlist */
  80     bool in_ram;         /* playlist stored in ram (dirplay)        */
  81     char *buffer;        /* buffer for in-ram playlists             */
  82     int  buffer_size;    /* size of buffer                          */
  83     int  buffer_end_pos; /* last position where buffer was written  */
  84     int  index;          /* index of current playing track          */
  85     int  first_index;    /* index of first song in playlist         */
  86     int  amount;         /* number of tracks in the index           */
  87     int  last_insert_pos; /* last position we inserted a track      */
  88     int  seed;           /* shuffle seed                            */
  89     bool shuffle_modified; /* has playlist been shuffled with
  90                               inserted tracks?                      */
  91     bool deleted;        /* have any tracks been deleted?           */
  92     int num_inserted_tracks; /* number of tracks inserted           */
  93     bool started;       /* has playlist been started?               */
  94
  95     /* cache of playlist control commands waiting to be flushed to
  96        to disk                                                      */
  97     struct playlist_control_cache control_cache[PLAYLIST_MAX_CACHE];
  98     int num_cached;      /* number of cached entries                */
  99     bool pending_control_sync; /* control file needs to be synced   */
 100
 101     struct mutex control_mutex; /* mutex for control file access    */
 102 };
 103
 104 struct playlist_track_info
 105 {
 106     char filename[MAX_PATH]; /* path name of mp3 file               */
 107     int  attr;               /* playlist attributes for track       */
 108     int  index;              /* index of track in playlist          */
 109     int  display_index;      /* index of track for display          */
 110 };
 111
 112 /* Exported functions only for current playlist. */
 113 void playlist_init(void);
 114 void playlist_shutdown(void);
 115 int playlist_create(const char *dir, const char *file);
 116 int playlist_resume(void);
 117 int playlist_add(const char *filename);
 118 int playlist_shuffle(int random_seed, int start_index);
 119 int playlist_start(int start_index, int offset);
 120 bool playlist_check(int steps);
 121 char *playlist_peek(int steps);
 122 int playlist_next(int steps);
 123 bool playlist_next_dir(int direction);
 124 int playlist_get_resume_info(int *resume_index);
 125 int playlist_update_resume_info(const struct mp3entry* id3);
 126 int playlist_get_display_index(void);
 127 int playlist_amount(void);
 128
 129 /* Exported functions for all playlists.  Pass NULL for playlist_info
 130    structure to work with current playlist. */
 131 int playlist_create_ex(struct playlist_info* playlist,
 132                        const char* dir, const char* file,
 133                        void* index_buffer, int index_buffer_size,
 134                        void* temp_buffer, int temp_buffer_size);
 135 int playlist_set_current(struct playlist_info* playlist);
 136 void playlist_close(struct playlist_info* playlist);
 137 void playlist_sync(struct playlist_info* playlist);
 138 int playlist_insert_track(struct playlist_info* playlist, const char *filename,
 139                           int position, bool queue, bool sync);
 140 int playlist_insert_directory(struct playlist_info* playlist,
 141                               const char *dirname, int position, bool queue,
 142                               bool recurse);
 143 int playlist_insert_playlist(struct playlist_info* playlist, char *filename,
 144                              int position, bool queue);
 145 void playlist_skip_entry(struct playlist_info *playlist, int steps);
 146 int playlist_delete(struct playlist_info* playlist, int index);
 147 int playlist_move(struct playlist_info* playlist, int index, int new_index);
 148 int playlist_randomise(struct playlist_info* playlist, unsigned int seed,
 149                        bool start_current);
 150 int playlist_sort(struct playlist_info* playlist, bool start_current);
 151 bool playlist_modified(const struct playlist_info* playlist);
 152 int playlist_get_first_index(const struct playlist_info* playlist);
 153 int playlist_get_seed(const struct playlist_info* playlist);
 154 int playlist_amount_ex(const struct playlist_info* playlist);
 155 char *playlist_name(const struct playlist_info* playlist, char *buf,
 156                     int buf_size);
 157 char *playlist_get_name(const struct playlist_info* playlist, char *buf,
 158                         int buf_size);
 159 int playlist_get_track_info(struct playlist_info* playlist, int index,
 160                             struct playlist_track_info* info);
 161 int playlist_save(struct playlist_info* playlist, char *filename);
 162 int playlist_directory_tracksearch(const char* dirname, bool recurse,
 163                                    int (*callback)(char*, void*),
 164                                    void* context);
 165
 166 #endif /* __PLAYLIST_H__ */