git.sesse.net Git - vlc/blob - src/playlist/playlist_internal.h

   1 /*****************************************************************************
   2  * playlist_internal.h : Playlist internals
   3  *****************************************************************************
   4  * Copyright (C) 1999-2008 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Clément Stenac <zorglub@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifndef __LIBVLC_PLAYLIST_INTERNAL_H
  26 # define __LIBVLC_PLAYLIST_INTERNAL_H 1
  27
  28 /**
  29  *  \file
  30  *  This file contain internal structures and function prototypes related
  31  *  to the playlist in vlc
  32  *
  33  * \defgroup vlc_playlist Playlist
  34  * @{
  35  */
  36
  37 #include "input/input_internal.h"
  38 #include <assert.h>
  39
  40 typedef struct playlist_preparse_t
  41 {
  42     vlc_thread_t    thread;
  43     vlc_mutex_t     lock;
  44     vlc_cond_t      wait;
  45     input_item_t  **pp_waiting;
  46     int             i_waiting;
  47     bool            up;
  48 } playlist_preparse_t;
  49
  50 typedef struct playlist_fetcher_t
  51 {
  52     vlc_thread_t    thread;
  53     vlc_mutex_t     lock;
  54     vlc_cond_t      wait;
  55     int             i_art_policy;
  56     int             i_waiting;
  57     input_item_t    **pp_waiting;
  58     bool            up;
  59
  60     DECL_ARRAY(playlist_album_t) albums;
  61 } playlist_fetcher_t;
  62
  63 typedef struct playlist_private_t
  64 {
  65     playlist_t           public_data;
  66     playlist_preparse_t  preparse; /**< Preparser data */
  67     playlist_fetcher_t   fetcher; /**< Meta and art fetcher data */
  68     sout_instance_t      *p_sout; /**< Kept sout instance */
  69
  70     playlist_item_array_t items_to_delete; /**< Array of items and nodes to
  71             delete... At the very end. This sucks. */
  72
  73     struct playlist_services_discovery_support_t {
  74         /* the playlist items for category and onelevel */
  75         playlist_item_t*    p_cat;
  76         playlist_item_t*    p_one;
  77         services_discovery_t * p_sd; /**< Loaded service discovery modules */
  78     } ** pp_sds;
  79     int                   i_sds;   /**< Number of service discovery modules */
  80     input_thread_t *      p_input;  /**< the input thread associated
  81                                      * with the current item */
  82     struct {
  83         /* Current status. These fields are readonly, only the playlist
  84          * main loop can touch it*/
  85         playlist_status_t   i_status;  /**< Current status of playlist */
  86         playlist_item_t *   p_item; /**< Currently playing/active item */
  87         playlist_item_t *   p_node; /**< Current node to play from */
  88     } status;
  89
  90     struct {
  91         /* Request. Use this to give orders to the playlist main loop  */
  92         playlist_status_t   i_status; /**< requested playlist status */
  93         playlist_item_t *   p_node;   /**< requested node to play from */
  94         playlist_item_t *   p_item;   /**< requested item to play in the node */
  95
  96         int                 i_skip;   /**< Number of items to skip */
  97
  98         bool          b_request;/**< Set to true by the requester
  99                                            The playlist sets it back to false
 100                                            when processing the request */
 101         vlc_mutex_t         lock;     /**< Lock to protect request */
 102     } request;
 103
 104 } playlist_private_t;
 105
 106 #define pl_priv( pl ) ((playlist_private_t *)(pl))
 107
 108 /*****************************************************************************
 109  * Prototypes
 110  *****************************************************************************/
 111
 112 /* Global thread */
 113 #define playlist_ThreadCreate(a) __playlist_ThreadCreate(VLC_OBJECT(a))
 114 void        __playlist_ThreadCreate   ( vlc_object_t * );
 115
 116 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 117                                               input_item_t *p_input );
 118
 119 /* Creation/Deletion */
 120 playlist_t *playlist_Create   ( vlc_object_t * );
 121
 122 /* Engine */
 123 void playlist_MainLoop( playlist_t * );
 124 void playlist_LastLoop( playlist_t * );
 125 void *playlist_PreparseLoop( void * );
 126 void *playlist_FetcherLoop( void * );
 127
 128 void ResetCurrentlyPlaying( playlist_t *, bool, playlist_item_t * );
 129
 130 playlist_item_t * get_current_status_item( playlist_t * p_playlist);
 131 playlist_item_t * get_current_status_node( playlist_t * p_playlist );
 132 void set_current_status_item( playlist_t *, playlist_item_t * );
 133 void set_current_status_node( playlist_t *, playlist_item_t * );
 134
 135 /* Control */
 136 playlist_item_t * playlist_NextItem  ( playlist_t * );
 137 int playlist_PlayItem  ( playlist_t *, playlist_item_t * );
 138
 139 /* Load/Save */
 140 int playlist_MLLoad( playlist_t *p_playlist );
 141 int playlist_MLDump( playlist_t *p_playlist );
 142
 143 /**********************************************************************
 144  * Item management
 145  **********************************************************************/
 146
 147 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 148                              int i_node_id, bool b_signal );
 149
 150 playlist_item_t * playlist_NodeAddInput( playlist_t *, input_item_t *,
 151         playlist_item_t *,int , int, bool );
 152
 153 /* Tree walking */
 154 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 155                                    int i_input_id, playlist_item_t *p_root,
 156                                    bool );
 157
 158 int playlist_DeleteFromInputInParent( playlist_t *, int, playlist_item_t *, bool );
 159 int playlist_DeleteFromItemId( playlist_t*, int );
 160 int playlist_ItemRelease( playlist_item_t * );
 161
 162 void playlist_release_current_input( playlist_t * p_playlist );
 163 void playlist_set_current_input(
 164     playlist_t * p_playlist, input_thread_t * p_input );
 165
 166 /**
 167  * @}
 168  */
 169
 170 #define PLAYLIST_DEBUG 1
 171 //#undef PLAYLIST_DEBUG2
 172
 173 #ifdef PLAYLIST_DEBUG
 174  #define PL_DEBUG( msg, args... ) msg_Dbg( p_playlist, msg, ## args )
 175  #ifdef PLAYLIST_DEBUG2
 176   #define PL_DEBUG2( msg, args... ) msg_Dbg( p_playlist, msg, ## args )
 177  #else
 178   #define PL_DEBUG2( msg, args... ) {}
 179  #endif
 180 #else
 181  #define PL_DEBUG( msg, args ... ) {}
 182  #define PL_DEBUG2( msg, args... ) {}
 183 #endif
 184
 185 #define PLI_NAME( p ) p && p->p_input ? p->p_input->psz_name : "null"
 186
 187 #define PL_ASSERT_LOCKED vlc_assert_locked( &(vlc_internals(p_playlist)->lock) )
 188
 189 #define PL_LOCK_IF( cond ) pl_lock_if( p_playlist, cond )
 190 static inline void pl_lock_if( playlist_t * p_playlist, bool cond )
 191 {
 192     if( cond ) PL_LOCK; else PL_ASSERT_LOCKED;
 193 }
 194
 195 #define PL_UNLOCK_IF( cond ) pl_unlock_if( p_playlist, cond )
 196 static inline void pl_unlock_if( playlist_t * p_playlist, bool cond )
 197 {
 198     if( cond ) PL_UNLOCK;
 199 }
 200
 201 #endif /* !__LIBVLC_PLAYLIST_INTERNAL_H */