include/vlc_input_item.h

   1 /*****************************************************************************
   2  * vlc_input_item.h: Core input item
   3  *****************************************************************************
   4  * Copyright (C) 1999-2009 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Laurent Aimar <fenrir@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this program; if not, write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifndef VLC_INPUT_ITEM_H
  26 #define VLC_INPUT_ITEM_H 1
  27
  28 /**
  29  * \file
  30  * This file defines functions, structures and enums for input items in vlc
  31  */
  32
  33 #include <vlc_meta.h>
  34 #include <vlc_epg.h>
  35 #include <vlc_events.h>
  36
  37 #include <string.h>
  38
  39 /*****************************************************************************
  40  * input_item_t: Describes an input and is used to spawn input_thread_t objects
  41  *****************************************************************************/
  42 struct info_t
  43 {
  44     char *psz_name;            /**< Name of this info */
  45     char *psz_value;           /**< Value of the info */
  46 };
  47
  48 struct info_category_t
  49 {
  50     char   *psz_name;      /**< Name of this category */
  51     int    i_infos;        /**< Number of infos in the category */
  52     struct info_t **pp_infos;     /**< Pointer to an array of infos */
  53 };
  54
  55 struct input_item_t
  56 {
  57     int        i_id;                 /**< Identifier of the item */
  58
  59     char       *psz_name;            /**< text describing this item */
  60     char       *psz_uri;             /**< mrl of this item */
  61
  62     int        i_options;            /**< Number of input options */
  63     char       **ppsz_options;       /**< Array of input options */
  64     uint8_t    *optflagv;            /**< Some flags of input options */
  65     unsigned   optflagc;
  66
  67     mtime_t    i_duration;           /**< Duration in microseconds */
  68
  69
  70     int        i_categories;         /**< Number of info categories */
  71     info_category_t **pp_categories; /**< Pointer to the first info category */
  72
  73     int         i_es;                /**< Number of es format descriptions */
  74     es_format_t **es;                /**< Es formats */
  75
  76     input_stats_t *p_stats;          /**< Statistics */
  77     int           i_nb_played;       /**< Number of times played */
  78
  79     vlc_meta_t *p_meta;
  80
  81     int         i_epg;               /**< Number of EPG entries */
  82     vlc_epg_t   **pp_epg;            /**< EPG entries */
  83
  84     vlc_event_manager_t event_manager;
  85
  86     vlc_mutex_t lock;                 /**< Lock for the item */
  87
  88     uint8_t     i_type;              /**< Type (file, disc, ... see input_item_type_e) */
  89     bool        b_fixed_name;        /**< Can the interface change the name ?*/
  90     bool        b_error_when_reading;/**< Error When Reading */
  91 };
  92
  93 TYPEDEF_ARRAY(input_item_t*, input_item_array_t)
  94
  95 enum input_item_type_e
  96 {
  97     ITEM_TYPE_UNKNOWN,
  98     ITEM_TYPE_FILE,
  99     ITEM_TYPE_DIRECTORY,
 100     ITEM_TYPE_DISC,
 101     ITEM_TYPE_CDDA,
 102     ITEM_TYPE_CARD,
 103     ITEM_TYPE_NET,
 104     ITEM_TYPE_PLAYLIST,
 105     ITEM_TYPE_NODE,
 106
 107     /* This one is not a real type but the number of input_item types. */
 108     ITEM_TYPE_NUMBER
 109 };
 110
 111 struct input_item_node_t
 112 {
 113     input_item_t *         p_item;
 114     int                    i_children;
 115     input_item_node_t      **pp_children;
 116     input_item_node_t      *p_parent;
 117 };
 118
 119 VLC_API void input_item_CopyOptions( input_item_t *p_parent, input_item_t *p_child );
 120 VLC_API void input_item_SetName( input_item_t *p_item, const char *psz_name );
 121
 122 /**
 123  * Add one subitem to this item
 124  *
 125  * This won't hold the item, but can tell to interested third parties
 126  * Like the playlist, that there is a new sub item. With this design
 127  * It is not the input item's responsability to keep all the ref of
 128  * the input item children.
 129  *
 130  * Sends a vlc_InputItemSubItemTreeAdded and a vlc_InputItemSubItemAdded event
 131  */
 132 VLC_API void input_item_PostSubItem( input_item_t *p_parent, input_item_t *p_child );
 133
 134 /**
 135  * Start adding multiple subitems.
 136  *
 137  * Create a root node to hold a tree of subitems for given item
 138  */
 139 VLC_API input_item_node_t * input_item_node_Create( input_item_t *p_input ) VLC_USED;
 140
 141 /**
 142  * Add a new child node to this parent node that will point to this subitem.
 143  */
 144 VLC_API input_item_node_t * input_item_node_AppendItem( input_item_node_t *p_node, input_item_t *p_item );
 145
 146 /**
 147  * Add an already created node to children of this parent node.
 148  */
 149 VLC_API void input_item_node_AppendNode( input_item_node_t *p_parent, input_item_node_t *p_child );
 150
 151 /**
 152  * Delete a node created with input_item_node_Create() and all its children.
 153  */
 154 VLC_API void input_item_node_Delete( input_item_node_t *p_node );
 155
 156 /**
 157  * End adding multiple subitems.
 158  *
 159  * Sends a vlc_InputItemSubItemTreeAdded event to notify that the item pointed to
 160  * by the given root node has created new subitems that are pointed to by all the
 161  * children of the node.
 162  *
 163  * Also sends vlc_InputItemSubItemAdded event for every child under the given root node;
 164  *
 165  * In the end deletes the node and all its children nodes.
 166  */
 167 VLC_API void input_item_node_PostAndDelete( input_item_node_t *p_node );
 168
 169
 170 /**
 171  * Option flags
 172  */
 173 enum input_item_option_e
 174 {
 175     /* Allow VLC to trust the given option.
 176      * By default options are untrusted */
 177     VLC_INPUT_OPTION_TRUSTED = 0x2,
 178
 179     /* Change the value associated to an option if already present, otherwise
 180      * add the option */
 181     VLC_INPUT_OPTION_UNIQUE  = 0x100,
 182 };
 183
 184 /**
 185  * This function allows to add an option to an existing input_item_t.
 186  */
 187 VLC_API int input_item_AddOption(input_item_t *, const char *, unsigned i_flags );
 188
 189 /* */
 190 VLC_API bool input_item_HasErrorWhenReading( input_item_t * );
 191 VLC_API void input_item_SetMeta( input_item_t *, vlc_meta_type_t meta_type, const char *psz_val );
 192 VLC_API bool input_item_MetaMatch( input_item_t *p_i, vlc_meta_type_t meta_type, const char *psz );
 193 VLC_API char * input_item_GetMeta( input_item_t *p_i, vlc_meta_type_t meta_type ) VLC_USED;
 194 VLC_API char * input_item_GetName( input_item_t * p_i ) VLC_USED;
 195 VLC_API char * input_item_GetTitleFbName( input_item_t * p_i ) VLC_USED;
 196 VLC_API char * input_item_GetURI( input_item_t * p_i ) VLC_USED;
 197 VLC_API void input_item_SetURI( input_item_t * p_i, const char *psz_uri );
 198 VLC_API mtime_t input_item_GetDuration( input_item_t * p_i );
 199 VLC_API void input_item_SetDuration( input_item_t * p_i, mtime_t i_duration );
 200 VLC_API bool input_item_IsPreparsed( input_item_t *p_i );
 201 VLC_API bool input_item_IsArtFetched( input_item_t *p_i );
 202
 203 #define INPUT_META( name ) \
 204 static inline \
 205 void input_item_Set ## name (input_item_t *p_input, const char *val) \
 206 { \
 207     input_item_SetMeta (p_input, vlc_meta_ ## name, val); \
 208 } \
 209 static inline \
 210 char *input_item_Get ## name (input_item_t *p_input) \
 211 { \
 212     return input_item_GetMeta (p_input, vlc_meta_ ## name); \
 213 }
 214
 215 INPUT_META(Title)
 216 INPUT_META(Artist)
 217 INPUT_META(Genre)
 218 INPUT_META(Copyright)
 219 INPUT_META(Album)
 220 INPUT_META(TrackNumber)
 221 INPUT_META(Description)
 222 INPUT_META(Rating)
 223 INPUT_META(Date)
 224 INPUT_META(Setting)
 225 INPUT_META(URL)
 226 INPUT_META(Language)
 227 INPUT_META(NowPlaying)
 228 INPUT_META(Publisher)
 229 INPUT_META(EncodedBy)
 230 INPUT_META(ArtworkURL)
 231 INPUT_META(TrackID)
 232 INPUT_META(TrackTotal)
 233 INPUT_META(Director)
 234 INPUT_META(Season)
 235 INPUT_META(Episode)
 236 INPUT_META(ShowName)
 237 INPUT_META(Actors)
 238
 239 #define input_item_SetTrackNum input_item_SetTrackNumber
 240 #define input_item_GetTrackNum input_item_GetTrackNumber
 241 #define input_item_SetArtURL   input_item_SetArtworkURL
 242 #define input_item_GetArtURL   input_item_GetArtworkURL
 243
 244 VLC_API char * input_item_GetInfo( input_item_t *p_i, const char *psz_cat,const char *psz_name ) VLC_USED;
 245 VLC_API int input_item_AddInfo( input_item_t *p_i, const char *psz_cat, const char *psz_name, const char *psz_format, ... ) VLC_FORMAT( 4, 5 );
 246 VLC_API int input_item_DelInfo( input_item_t *p_i, const char *psz_cat, const char *psz_name );
 247 VLC_API void input_item_ReplaceInfos( input_item_t *, info_category_t * );
 248 VLC_API void input_item_MergeInfos( input_item_t *, info_category_t * );
 249
 250 /**
 251  * This function creates a new input_item_t with the provided information.
 252  *
 253  * XXX You may also use input_item_New or input_item_NewExt as they need
 254  * less arguments.
 255  */
 256 VLC_API input_item_t * input_item_NewWithType( const char *psz_uri, const char *psz_name, int i_options, const char *const *ppsz_options, unsigned i_option_flags, mtime_t i_duration, int i_type ) VLC_USED;
 257
 258 /**
 259  * This function creates a new input_item_t with the provided information.
 260  *
 261  * Provided for convenience.
 262  */
 263 VLC_API input_item_t * input_item_NewExt( const char *psz_uri, const char *psz_name, int i_options, const char *const *ppsz_options, unsigned i_option_flags, mtime_t i_duration ) VLC_USED;
 264
 265 /**
 266  * This function creates a new input_item_t with the provided information.
 267  *
 268  * Provided for convenience.
 269  */
 270 #define input_item_New( a,b ) input_item_NewExt( a, b, 0, NULL, 0, -1 )
 271
 272 /**
 273  * This function creates a new input_item_t as a copy of another.
 274  */
 275 VLC_API input_item_t * input_item_Copy(input_item_t * ) VLC_USED;
 276
 277 /** Holds an input item, i.e. creates a new reference. */
 278 VLC_API input_item_t *input_item_Hold(input_item_t *);
 279
 280 /** Releases an input item, i.e. decrements its reference counter. */
 281 VLC_API void input_item_Release(input_item_t *);
 282
 283 /* Historical hack... */
 284 #define vlc_gc_incref(i) input_item_Hold(i)
 285 #define vlc_gc_decref(i) input_item_Release(i)
 286
 287 VLC_API int libvlc_MetaRequest(libvlc_int_t *, input_item_t *);
 288 VLC_API int libvlc_ArtRequest(libvlc_int_t *, input_item_t *);
 289
 290 /******************
 291  * Input stats
 292  ******************/
 293 struct input_stats_t
 294 {
 295     vlc_mutex_t         lock;
 296
 297     /* Input */
 298     int64_t i_read_packets;
 299     int64_t i_read_bytes;
 300     float f_input_bitrate;
 301     float f_average_input_bitrate;
 302
 303     /* Demux */
 304     int64_t i_demux_read_packets;
 305     int64_t i_demux_read_bytes;
 306     float f_demux_bitrate;
 307     float f_average_demux_bitrate;
 308     int64_t i_demux_corrupted;
 309     int64_t i_demux_discontinuity;
 310
 311     /* Decoders */
 312     int64_t i_decoded_audio;
 313     int64_t i_decoded_video;
 314
 315     /* Vout */
 316     int64_t i_displayed_pictures;
 317     int64_t i_lost_pictures;
 318
 319     /* Sout */
 320     int64_t i_sent_packets;
 321     int64_t i_sent_bytes;
 322     float f_send_bitrate;
 323
 324     /* Aout */
 325     int64_t i_played_abuffers;
 326     int64_t i_lost_abuffers;
 327 };
 328
 329 #endif