include/vlc_configuration.h

   1 /*****************************************************************************
   2  * configuration.h : configuration management module
   3  * This file describes the programming interface for the configuration module.
   4  * It includes functions allowing to declare, get or set configuration options.
   5  *****************************************************************************
   6  * Copyright (C) 1999-2006 the VideoLAN team
   7  * $Id$
   8  *
   9  * Authors: Gildas Bazin <gbazin@videolan.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 #ifndef VLC_CONFIGURATION_H
  27 #define VLC_CONFIGURATION_H 1
  28
  29 /**
  30  * \file
  31  * This file describes the programming interface for the configuration module.
  32  * It includes functions allowing to declare, get or set configuration options.
  33  */
  34
  35 # ifdef __cplusplus
  36 extern "C" {
  37 # endif
  38
  39 /*****************************************************************************
  40  * Macros used to build the configuration structure.
  41  *****************************************************************************/
  42
  43 /* Configuration hint types */
  44 #define CONFIG_HINT_CATEGORY                0x02  /* Start of new category */
  45 #define CONFIG_HINT_SUBCATEGORY             0x03  /* Start of sub-category */
  46 #define CONFIG_HINT_SUBCATEGORY_END         0x04  /* End of sub-category */
  47 #define CONFIG_HINT_USAGE                   0x05  /* Usage information */
  48
  49 #define CONFIG_CATEGORY                     0x06 /* Set category */
  50 #define CONFIG_SUBCATEGORY                  0x07 /* Set subcategory */
  51 #define CONFIG_SECTION                      0x08 /* Start of new section */
  52
  53 /* Configuration item types */
  54 #define CONFIG_ITEM_FLOAT                   0x20  /* Float option */
  55 #define CONFIG_ITEM_INTEGER                 0x40  /* Integer option */
  56 #define CONFIG_ITEM_RGB                     0x41  /* RGB color option */
  57 #define CONFIG_ITEM_BOOL                    0x60  /* Bool option */
  58 #define CONFIG_ITEM_STRING                  0x80  /* String option */
  59 #define CONFIG_ITEM_PASSWORD                0x81  /* Password option (*) */
  60 #define CONFIG_ITEM_KEY                     0x82  /* Hot key option */
  61 #define CONFIG_ITEM_MODULE                  0x84  /* Module option */
  62 #define CONFIG_ITEM_MODULE_CAT              0x85  /* Module option */
  63 #define CONFIG_ITEM_MODULE_LIST             0x86  /* Module option */
  64 #define CONFIG_ITEM_MODULE_LIST_CAT         0x87  /* Module option */
  65 #define CONFIG_ITEM_LOADFILE                0x8C  /* Read file option */
  66 #define CONFIG_ITEM_SAVEFILE                0x8D  /* Written file option */
  67 #define CONFIG_ITEM_DIRECTORY               0x8E  /* Directory option */
  68 #define CONFIG_ITEM_FONT                    0x8F  /* Font option */
  69
  70 #define CONFIG_ITEM(x) (((x) & ~0xF) != 0)
  71
  72 /*******************************************************************
  73  * All predefined categories and subcategories
  74  *******************************************************************/
  75 #define CAT_INTERFACE 1
  76    #define SUBCAT_INTERFACE_GENERAL 101
  77    #define SUBCAT_INTERFACE_MAIN 102
  78    #define SUBCAT_INTERFACE_CONTROL 103
  79    #define SUBCAT_INTERFACE_HOTKEYS 104
  80
  81 #define CAT_AUDIO 2
  82    #define SUBCAT_AUDIO_GENERAL 201
  83    #define SUBCAT_AUDIO_AOUT 202
  84    #define SUBCAT_AUDIO_AFILTER 203
  85    #define SUBCAT_AUDIO_VISUAL 204
  86    #define SUBCAT_AUDIO_MISC 205
  87
  88 #define CAT_VIDEO 3
  89    #define SUBCAT_VIDEO_GENERAL 301
  90    #define SUBCAT_VIDEO_VOUT 302
  91    #define SUBCAT_VIDEO_VFILTER 303
  92    #define SUBCAT_VIDEO_TEXT 304
  93    #define SUBCAT_VIDEO_SUBPIC 305
  94    #define SUBCAT_VIDEO_VFILTER2 306
  95
  96 #define CAT_INPUT 4
  97    #define SUBCAT_INPUT_GENERAL 401
  98    #define SUBCAT_INPUT_ACCESS 402
  99    #define SUBCAT_INPUT_DEMUX 403
 100    #define SUBCAT_INPUT_VCODEC 404
 101    #define SUBCAT_INPUT_ACODEC 405
 102    #define SUBCAT_INPUT_SCODEC 406
 103    #define SUBCAT_INPUT_STREAM_FILTER 407
 104
 105 #define CAT_SOUT 5
 106    #define SUBCAT_SOUT_GENERAL 501
 107    #define SUBCAT_SOUT_STREAM 502
 108    #define SUBCAT_SOUT_MUX 503
 109    #define SUBCAT_SOUT_ACO 504
 110    #define SUBCAT_SOUT_PACKETIZER 505
 111    #define SUBCAT_SOUT_SAP 506
 112    #define SUBCAT_SOUT_VOD 507
 113
 114 #define CAT_ADVANCED 6
 115    #define SUBCAT_ADVANCED_CPU 601
 116    #define SUBCAT_ADVANCED_MISC 602
 117    #define SUBCAT_ADVANCED_NETWORK 603
 118    #define SUBCAT_ADVANCED_XML 604
 119
 120 #define CAT_PLAYLIST 7
 121    #define SUBCAT_PLAYLIST_GENERAL 701
 122    #define SUBCAT_PLAYLIST_SD 702
 123    #define SUBCAT_PLAYLIST_EXPORT 703
 124
 125 #define CAT_OSD 8
 126    #define SUBCAT_OSD_IMPORT 801
 127
 128 struct config_category_t
 129 {
 130     int         i_id;
 131     const char *psz_name;
 132     const char *psz_help;
 133 };
 134
 135 typedef union
 136 {
 137     char       *psz;
 138     int64_t     i;
 139     float       f;
 140 } module_value_t;
 141
 142 struct module_config_t
 143 {
 144     char        *psz_type;                          /* Configuration subtype */
 145     char        *psz_name;                                    /* Option name */
 146     char        *psz_text;      /* Short comment on the configuration option */
 147     char        *psz_longtext;   /* Long comment on the configuration option */
 148     module_value_t value;                                    /* Option value */
 149     module_value_t orig;
 150     module_value_t min;
 151     module_value_t max;
 152
 153     /* Values list */
 154     char **      ppsz_list;       /* List of possible values for the option */
 155     int         *pi_list;                              /* Idem for integers */
 156     char       **ppsz_list_text;          /* Friendly names for list values */
 157     int          i_list;                               /* Options list size */
 158     vlc_callback_t pf_update_list; /* Callback to initialize dropdown lists */
 159     uint8_t      i_type;                              /* Configuration type */
 160     char         i_short;                     /* Optional short option name */
 161
 162     /* Misc */
 163     unsigned    b_dirty:1;        /* Dirty flag to indicate a config change */
 164     unsigned    b_advanced:1;        /* Flag to indicate an advanced option */
 165     unsigned    b_internal:1; /* Flag to indicate option is not to be shown */
 166     unsigned    b_unsaveable:1;               /* Config should not be saved */
 167     unsigned    b_safe:1;       /* Safe to use in web plugins and playlists */
 168
 169     /* Actions list */
 170     int            i_action;                           /* actions list size */
 171     vlc_callback_t *ppf_action;    /* List of possible actions for a config */
 172     char          **ppsz_action_text;         /* Friendly names for actions */
 173
 174     /* Deprecated */
 175     bool        b_removed;
 176 };
 177
 178 /*****************************************************************************
 179  * Prototypes - these methods are used to get, set or manipulate configuration
 180  * data.
 181  *****************************************************************************/
 182 VLC_API int config_GetType(vlc_object_t *, const char *) VLC_USED;
 183 VLC_API int64_t config_GetInt(vlc_object_t *, const char *) VLC_USED;
 184 VLC_API void config_PutInt(vlc_object_t *, const char *, int64_t);
 185 VLC_API float config_GetFloat(vlc_object_t *, const char *) VLC_USED;
 186 VLC_API void config_PutFloat(vlc_object_t *, const char *, float);
 187 VLC_API char * config_GetPsz(vlc_object_t *, const char *) VLC_USED VLC_MALLOC;
 188 VLC_API void config_PutPsz(vlc_object_t *, const char *, const char *);
 189
 190 VLC_API int config_SaveConfigFile( vlc_object_t * );
 191 #define config_SaveConfigFile(a) config_SaveConfigFile(VLC_OBJECT(a))
 192
 193 VLC_API void config_ResetAll( vlc_object_t * );
 194 #define config_ResetAll(a) config_ResetAll(VLC_OBJECT(a))
 195
 196 VLC_API module_config_t * config_FindConfig( vlc_object_t *, const char * ) VLC_USED;
 197 VLC_API char * config_GetDataDir( vlc_object_t * ) VLC_USED VLC_MALLOC;
 198 #define config_GetDataDir(a) config_GetDataDir(VLC_OBJECT(a))
 199 VLC_API const char * config_GetLibDir( void ) VLC_USED;
 200 VLC_API const char * config_GetConfDir( void ) VLC_USED;
 201
 202 typedef enum vlc_userdir
 203 {
 204     VLC_HOME_DIR, /* User's home */
 205     VLC_CONFIG_DIR, /* VLC-specific configuration directory */
 206     VLC_DATA_DIR, /* VLC-specific data directory */
 207     VLC_CACHE_DIR, /* VLC-specific user cached data directory */
 208     /* Generic directories (same as XDG) */
 209     VLC_DESKTOP_DIR=0x80,
 210     VLC_DOWNLOAD_DIR,
 211     VLC_TEMPLATES_DIR,
 212     VLC_PUBLICSHARE_DIR,
 213     VLC_DOCUMENTS_DIR,
 214     VLC_MUSIC_DIR,
 215     VLC_PICTURES_DIR,
 216     VLC_VIDEOS_DIR,
 217 } vlc_userdir_t;
 218
 219 VLC_API char * config_GetUserDir( vlc_userdir_t ) VLC_USED VLC_MALLOC;
 220
 221 VLC_API void config_AddIntf( vlc_object_t *, const char * );
 222 VLC_API void config_RemoveIntf( vlc_object_t *, const char * );
 223 VLC_API bool config_ExistIntf( vlc_object_t *, const char * ) VLC_USED;
 224
 225 #define config_GetType(a,b) config_GetType(VLC_OBJECT(a),b)
 226 #define config_GetInt(a,b) config_GetInt(VLC_OBJECT(a),b)
 227 #define config_PutInt(a,b,c) config_PutInt(VLC_OBJECT(a),b,c)
 228 #define config_GetFloat(a,b) config_GetFloat(VLC_OBJECT(a),b)
 229 #define config_PutFloat(a,b,c) config_PutFloat(VLC_OBJECT(a),b,c)
 230 #define config_GetPsz(a,b) config_GetPsz(VLC_OBJECT(a),b)
 231 #define config_PutPsz(a,b,c) config_PutPsz(VLC_OBJECT(a),b,c)
 232
 233 #define config_AddIntf(a,b) config_AddIntf(VLC_OBJECT(a),b)
 234 #define config_RemoveIntf(a,b) config_RemoveIntf(VLC_OBJECT(a),b)
 235 #define config_ExistIntf(a,b) config_ExistIntf(VLC_OBJECT(a),b)
 236
 237 /****************************************************************************
 238  * config_chain_t:
 239  ****************************************************************************/
 240 struct config_chain_t
 241 {
 242     config_chain_t *p_next;     /**< Pointer on the next config_chain_t element */
 243
 244     char        *psz_name;      /**< Option name */
 245     char        *psz_value;     /**< Option value */
 246 };
 247
 248 /**
 249  * This function will
 250  * - create all options in the array ppsz_options (var_Create).
 251  * - parse the given linked list of config_chain_t and set the value (var_Set).
 252  *
 253  * The option names will be created by adding the psz_prefix prefix.
 254  */
 255 VLC_API void config_ChainParse( vlc_object_t *, const char *psz_prefix, const char *const *ppsz_options, config_chain_t * );
 256 #define config_ChainParse( a, b, c, d ) config_ChainParse( VLC_OBJECT(a), b, c, d )
 257
 258 /**
 259  * This function will parse a configuration string (psz_string) and
 260  * - set the module name (*ppsz_name)
 261  * - set all options for this module in a chained list (*pp_cfg)
 262  * - returns a pointer on the next module if any.
 263  *
 264  * The string format is
 265  *   module{option=*,option=*}[:modulenext{option=*,...}]
 266  *
 267  * The options values are unescaped using config_StringUnescape.
 268  */
 269 VLC_API char *config_ChainCreate( char **ppsz_name, config_chain_t **pp_cfg, const char *psz_string ) VLC_USED VLC_MALLOC;
 270
 271 /**
 272  * This function will release a linked list of config_chain_t
 273  * (Including the head)
 274  */
 275 VLC_API void config_ChainDestroy( config_chain_t * );
 276
 277 /**
 278  * This function will duplicate a linked list of config_chain_t
 279  */
 280 VLC_API config_chain_t * config_ChainDuplicate( const config_chain_t * ) VLC_USED VLC_MALLOC;
 281
 282 /**
 283  * This function will unescape a string in place and will return a pointer on
 284  * the given string.
 285  * No memory is allocated by it (unlike config_StringEscape).
 286  * If NULL is given as parameter nothing will be done (NULL will be returned).
 287  *
 288  * The following sequences will be unescaped (only one time):
 289  * \\ \' and \"
 290  */
 291 VLC_API char * config_StringUnescape( char *psz_string );
 292
 293 /**
 294  * This function will escape a string that can be unescaped by
 295  * config_StringUnescape.
 296  * The returned value is allocated by it. You have to free it once you
 297  * do not need it anymore (unlike config_StringUnescape).
 298  * If NULL is given as parameter nothing will be done (NULL will be returned).
 299  *
 300  * The escaped characters are ' " and \
 301  */
 302 VLC_API char * config_StringEscape( const char *psz_string ) VLC_USED VLC_MALLOC;
 303
 304 # ifdef __cplusplus
 305 }
 306 # endif
 307
 308 #endif /* _VLC_CONFIGURATION_H */