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 typedef struct input_item_opaque input_item_opaque_t;
  40 typedef struct input_item_slave input_item_slave_t;
  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 /**
  56  * Describes an input and is used to spawn input_thread_t objects.
  57  */
  58 struct input_item_t
  59 {
  60     char       *psz_name;            /**< text describing this item */
  61     char       *psz_uri;             /**< mrl of this item */
  62
  63     int        i_options;            /**< Number of input options */
  64     char       **ppsz_options;       /**< Array of input options */
  65     uint8_t    *optflagv;            /**< Some flags of input options */
  66     unsigned   optflagc;
  67     input_item_opaque_t *opaques;    /**< List of opaque pointer values */
  68
  69     mtime_t    i_duration;           /**< Duration in microseconds */
  70
  71
  72     int        i_categories;         /**< Number of info categories */
  73     info_category_t **pp_categories; /**< Pointer to the first info category */
  74
  75     int         i_es;                /**< Number of es format descriptions */
  76     es_format_t **es;                /**< Es formats */
  77
  78     input_stats_t *p_stats;          /**< Statistics */
  79
  80     vlc_meta_t *p_meta;
  81
  82     int         i_epg;               /**< Number of EPG entries */
  83     vlc_epg_t   **pp_epg;            /**< EPG entries */
  84     int64_t     i_epg_time;          /** EPG timedate as epoch time */
  85     const vlc_epg_t *p_epg_table;    /** running/selected program cur/next EPG table */
  86
  87     int         i_slaves;            /**< Number of slaves */
  88     input_item_slave_t **pp_slaves;  /**< Slave entries that will be loaded by
  89                                           the input_thread */
  90
  91     vlc_event_manager_t event_manager;
  92
  93     vlc_mutex_t lock;                 /**< Lock for the item */
  94
  95     uint8_t     i_type;              /**< Type (file, disc, ... see input_item_type_e) */
  96     bool        b_net;               /**< Net: always true for TYPE_STREAM, it
  97                                           depends for others types */
  98     bool        b_error_when_reading;/**< Error When Reading */
  99
 100     int         i_preparse_depth;    /**< How many level of sub items can be preparsed:
 101                                           -1: recursive, 0: none, >0: n levels */
 102
 103     bool        b_preparse_interact; /**< Force interaction with the user when
 104                                           preparsing.*/
 105 };
 106
 107 enum input_item_type_e
 108 {
 109     ITEM_TYPE_UNKNOWN,
 110     ITEM_TYPE_FILE,
 111     ITEM_TYPE_DIRECTORY,
 112     ITEM_TYPE_DISC,
 113     ITEM_TYPE_CARD,
 114     ITEM_TYPE_STREAM,
 115     ITEM_TYPE_PLAYLIST,
 116     ITEM_TYPE_NODE,
 117
 118     /* This one is not a real type but the number of input_item types. */
 119     ITEM_TYPE_NUMBER
 120 };
 121
 122 enum input_item_net_type
 123 {
 124     ITEM_NET_UNKNOWN,
 125     ITEM_NET,
 126     ITEM_LOCAL
 127 };
 128
 129 enum slave_type
 130 {
 131     SLAVE_TYPE_SPU,
 132     SLAVE_TYPE_AUDIO,
 133 };
 134
 135 enum slave_priority
 136 {
 137     SLAVE_PRIORITY_MATCH_NONE = 1,
 138     SLAVE_PRIORITY_MATCH_RIGHT,
 139     SLAVE_PRIORITY_MATCH_LEFT,
 140     SLAVE_PRIORITY_MATCH_ALL,
 141     SLAVE_PRIORITY_USER
 142 };
 143
 144 #define SLAVE_SPU_EXTENSIONS \
 145     "idx", "sub",  "srt", \
 146     "ssa", "ass",  "smi", \
 147     "utf", "utf8", "utf-8", \
 148     "rt",   "aqt", "txt", \
 149     "usf", "jss",  "cdg", \
 150     "psb", "mpsub","mpl2", \
 151     "pjs", "dks", "stl", \
 152     "vtt", "sbv", "ttml"
 153 #define SLAVE_AUDIO_EXTENSIONS \
 154     "ac3", "m4a", "aac", \
 155     "eac3",  "dtshd", "flac", \
 156     "pcm", "dts"
 157
 158 struct input_item_slave
 159 {
 160     enum slave_type     i_type;     /**< Slave type (spu, audio) */
 161     enum slave_priority i_priority; /**< Slave priority */
 162     bool                b_forced;   /**< Slave should be selected */
 163     char                psz_uri[];  /**< Slave mrl */
 164 };
 165
 166 struct input_item_node_t
 167 {
 168     input_item_t *         p_item;
 169     int                    i_children;
 170     input_item_node_t      **pp_children;
 171 };
 172
 173 VLC_API void input_item_CopyOptions( input_item_t *p_child, input_item_t *p_parent );
 174 VLC_API void input_item_SetName( input_item_t *p_item, const char *psz_name );
 175
 176 /**
 177  * Start adding multiple subitems.
 178  *
 179  * Create a root node to hold a tree of subitems for given item
 180  */
 181 VLC_API input_item_node_t * input_item_node_Create( input_item_t *p_input ) VLC_USED;
 182
 183 /**
 184  * Add a new child node to this parent node that will point to this subitem.
 185  */
 186 VLC_API input_item_node_t * input_item_node_AppendItem( input_item_node_t *p_node, input_item_t *p_item );
 187
 188 /**
 189  * Add an already created node to children of this parent node.
 190  */
 191 VLC_API void input_item_node_AppendNode( input_item_node_t *p_parent, input_item_node_t *p_child );
 192
 193 /**
 194  * Remove a node from its parent.
 195  */
 196 void input_item_node_RemoveNode( input_item_node_t *parent,
 197                                  input_item_node_t *child );
 198
 199 /**
 200  * Delete a node created with input_item_node_Create() and all its children.
 201  */
 202 VLC_API void input_item_node_Delete( input_item_node_t *p_node );
 203
 204 /**
 205  * Option flags
 206  */
 207 enum input_item_option_e
 208 {
 209     /* Allow VLC to trust the given option.
 210      * By default options are untrusted */
 211     VLC_INPUT_OPTION_TRUSTED = 0x2,
 212
 213     /* Add the option, unless the same option
 214      * is already present. */
 215     VLC_INPUT_OPTION_UNIQUE  = 0x100,
 216 };
 217
 218 /**
 219  * This function allows to add an option to an existing input_item_t.
 220  */
 221 VLC_API int input_item_AddOption(input_item_t *, const char *, unsigned i_flags );
 222 /**
 223  * This function add several options to an existing input_item_t.
 224  */
 225 VLC_API int input_item_AddOptions(input_item_t *, int i_options,
 226                                   const char *const *ppsz_options,
 227                                   unsigned i_flags );
 228 VLC_API int input_item_AddOpaque(input_item_t *, const char *, void *);
 229
 230 void input_item_ApplyOptions(vlc_object_t *, input_item_t *);
 231
 232 VLC_API bool input_item_slave_GetType(const char *, enum slave_type *);
 233
 234 VLC_API input_item_slave_t *input_item_slave_New(const char *, enum slave_type,
 235                                                enum slave_priority);
 236 #define input_item_slave_Delete(p_slave) free(p_slave)
 237
 238 /**
 239  * This function allows adding a slave to an existing input item.
 240  * The slave is owned by the input item after this call.
 241  */
 242 VLC_API int input_item_AddSlave(input_item_t *, input_item_slave_t *);
 243
 244 /* */
 245 VLC_API bool input_item_HasErrorWhenReading( input_item_t * );
 246 VLC_API void input_item_SetMeta( input_item_t *, vlc_meta_type_t meta_type, const char *psz_val );
 247 VLC_API bool input_item_MetaMatch( input_item_t *p_i, vlc_meta_type_t meta_type, const char *psz );
 248 VLC_API char * input_item_GetMeta( input_item_t *p_i, vlc_meta_type_t meta_type ) VLC_USED;
 249 VLC_API char * input_item_GetName( input_item_t * p_i ) VLC_USED;
 250 VLC_API char * input_item_GetTitleFbName( input_item_t * p_i ) VLC_USED;
 251 VLC_API char * input_item_GetURI( input_item_t * p_i ) VLC_USED;
 252 VLC_API char * input_item_GetNowPlayingFb( input_item_t *p_item ) VLC_USED;
 253 VLC_API void input_item_SetURI( input_item_t * p_i, const char *psz_uri );
 254 VLC_API mtime_t input_item_GetDuration( input_item_t * p_i );
 255 VLC_API void input_item_SetDuration( input_item_t * p_i, mtime_t i_duration );
 256 VLC_API bool input_item_IsPreparsed( input_item_t *p_i );
 257 VLC_API bool input_item_IsArtFetched( input_item_t *p_i );
 258
 259 #define INPUT_META( name ) \
 260 static inline \
 261 void input_item_Set ## name (input_item_t *p_input, const char *val) \
 262 { \
 263     input_item_SetMeta (p_input, vlc_meta_ ## name, val); \
 264 } \
 265 static inline \
 266 char *input_item_Get ## name (input_item_t *p_input) \
 267 { \
 268     return input_item_GetMeta (p_input, vlc_meta_ ## name); \
 269 }
 270
 271 INPUT_META(Title)
 272 INPUT_META(Artist)
 273 INPUT_META(AlbumArtist)
 274 INPUT_META(Genre)
 275 INPUT_META(Copyright)
 276 INPUT_META(Album)
 277 INPUT_META(TrackNumber)
 278 INPUT_META(Description)
 279 INPUT_META(Rating)
 280 INPUT_META(Date)
 281 INPUT_META(Setting)
 282 INPUT_META(URL)
 283 INPUT_META(Language)
 284 INPUT_META(NowPlaying)
 285 INPUT_META(ESNowPlaying)
 286 INPUT_META(Publisher)
 287 INPUT_META(EncodedBy)
 288 INPUT_META(ArtworkURL)
 289 INPUT_META(TrackID)
 290 INPUT_META(TrackTotal)
 291 INPUT_META(Director)
 292 INPUT_META(Season)
 293 INPUT_META(Episode)
 294 INPUT_META(ShowName)
 295 INPUT_META(Actors)
 296 INPUT_META(DiscNumber)
 297
 298 #define input_item_SetTrackNum input_item_SetTrackNumber
 299 #define input_item_GetTrackNum input_item_GetTrackNumber
 300 #define input_item_SetArtURL   input_item_SetArtworkURL
 301 #define input_item_GetArtURL   input_item_GetArtworkURL
 302
 303 VLC_API char * input_item_GetInfo( input_item_t *p_i, const char *psz_cat,const char *psz_name ) VLC_USED;
 304 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 );
 305 VLC_API int input_item_DelInfo( input_item_t *p_i, const char *psz_cat, const char *psz_name );
 306 VLC_API void input_item_ReplaceInfos( input_item_t *, info_category_t * );
 307 VLC_API void input_item_MergeInfos( input_item_t *, info_category_t * );
 308
 309 /**
 310  * This function creates a new input_item_t with the provided information.
 311  *
 312  * XXX You may also use input_item_New, as they need less arguments.
 313  */
 314 VLC_API input_item_t * input_item_NewExt( const char *psz_uri,
 315                                           const char *psz_name,
 316                                           mtime_t i_duration, int i_type,
 317                                           enum input_item_net_type i_net ) VLC_USED;
 318
 319 #define input_item_New( psz_uri, psz_name ) \
 320     input_item_NewExt( psz_uri, psz_name, -1, ITEM_TYPE_UNKNOWN, ITEM_NET_UNKNOWN )
 321
 322 #define input_item_NewCard( psz_uri, psz_name ) \
 323     input_item_NewExt( psz_uri, psz_name, -1, ITEM_TYPE_CARD, ITEM_LOCAL )
 324
 325 #define input_item_NewDisc( psz_uri, psz_name, i_duration ) \
 326     input_item_NewExt( psz_uri, psz_name, i_duration, ITEM_TYPE_DISC, ITEM_LOCAL )
 327
 328 #define input_item_NewStream( psz_uri, psz_name, i_duration ) \
 329     input_item_NewExt( psz_uri, psz_name, i_duration, ITEM_TYPE_STREAM, ITEM_NET )
 330
 331 #define input_item_NewDirectory( psz_uri, psz_name, i_net ) \
 332     input_item_NewExt( psz_uri, psz_name, -1, ITEM_TYPE_DIRECTORY, i_net )
 333
 334 #define input_item_NewFile( psz_uri, psz_name, i_duration, i_net ) \
 335     input_item_NewExt( psz_uri, psz_name, i_duration, ITEM_TYPE_FILE, i_net )
 336
 337 /**
 338  * This function creates a new input_item_t as a copy of another.
 339  */
 340 VLC_API input_item_t * input_item_Copy(input_item_t * ) VLC_USED;
 341
 342 /** Holds an input item, i.e. creates a new reference. */
 343 VLC_API input_item_t *input_item_Hold(input_item_t *);
 344
 345 /** Releases an input item, i.e. decrements its reference counter. */
 346 VLC_API void input_item_Release(input_item_t *);
 347
 348 typedef enum input_item_meta_request_option_t
 349 {
 350     META_REQUEST_OPTION_NONE          = 0x00,
 351     META_REQUEST_OPTION_SCOPE_LOCAL   = 0x01,
 352     META_REQUEST_OPTION_SCOPE_NETWORK = 0x02,
 353     META_REQUEST_OPTION_SCOPE_ANY     = 0x03,
 354     META_REQUEST_OPTION_DO_INTERACT   = 0x04
 355 } input_item_meta_request_option_t;
 356
 357 /* status of the vlc_InputItemPreparseEnded event */
 358 enum input_item_preparse_status
 359 {
 360     ITEM_PREPARSE_SKIPPED,
 361     ITEM_PREPARSE_FAILED,
 362     ITEM_PREPARSE_TIMEOUT,
 363     ITEM_PREPARSE_DONE
 364 };
 365
 366 VLC_API int libvlc_MetadataRequest( libvlc_int_t *, input_item_t *,
 367                                     input_item_meta_request_option_t,
 368                                     int, void * );
 369 VLC_API int libvlc_ArtRequest(libvlc_int_t *, input_item_t *,
 370                               input_item_meta_request_option_t );
 371 VLC_API void libvlc_MetadataCancel( libvlc_int_t *, void * );
 372
 373 /******************
 374  * Input stats
 375  ******************/
 376 struct input_stats_t
 377 {
 378     vlc_mutex_t         lock;
 379
 380     /* Input */
 381     int64_t i_read_packets;
 382     int64_t i_read_bytes;
 383     float f_input_bitrate;
 384     float f_average_input_bitrate;
 385
 386     /* Demux */
 387     int64_t i_demux_read_packets;
 388     int64_t i_demux_read_bytes;
 389     float f_demux_bitrate;
 390     float f_average_demux_bitrate;
 391     int64_t i_demux_corrupted;
 392     int64_t i_demux_discontinuity;
 393
 394     /* Decoders */
 395     int64_t i_decoded_audio;
 396     int64_t i_decoded_video;
 397
 398     /* Vout */
 399     int64_t i_displayed_pictures;
 400     int64_t i_lost_pictures;
 401
 402     /* Sout */
 403     int64_t i_sent_packets;
 404     int64_t i_sent_bytes;
 405     float f_send_bitrate;
 406
 407     /* Aout */
 408     int64_t i_played_abuffers;
 409     int64_t i_lost_abuffers;
 410 };
 411
 412 #endif