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
  45
  46 #define CONFIG_HINT_CATEGORY                0x0002  /* Start of new category */
  47 #define CONFIG_HINT_SUBCATEGORY             0x0003  /* Start of sub-category */
  48 #define CONFIG_HINT_SUBCATEGORY_END         0x0004  /* End of sub-category */
  49 #define CONFIG_HINT_USAGE                   0x0005  /* Usage information */
  50
  51 #define CONFIG_CATEGORY                     0x0006 /* Set category */
  52 #define CONFIG_SUBCATEGORY                  0x0007 /* Set subcategory */
  53 #define CONFIG_SECTION                      0x0008 /* Start of new section */
  54
  55 #define CONFIG_HINT                         0x000F
  56
  57 /* Configuration item types */
  58 #define CONFIG_ITEM_STRING                  0x0010  /* String option */
  59 #define CONFIG_ITEM_FILE                    0x0020  /* File option */
  60 #define CONFIG_ITEM_MODULE                  0x0030  /* Module option */
  61 #define CONFIG_ITEM_INTEGER                 0x0040  /* Integer option */
  62 #define CONFIG_ITEM_BOOL                    0x0050  /* Bool option */
  63 #define CONFIG_ITEM_FLOAT                   0x0060  /* Float option */
  64 #define CONFIG_ITEM_DIRECTORY               0x0070  /* Directory option */
  65 #define CONFIG_ITEM_KEY                     0x0080  /* Hot key option */
  66 #define CONFIG_ITEM_MODULE_CAT              0x0090  /* Module option */
  67 #define CONFIG_ITEM_MODULE_LIST             0x00A0  /* Module option */
  68 #define CONFIG_ITEM_MODULE_LIST_CAT         0x00B0  /* Module option */
  69 #define CONFIG_ITEM_FONT                    0x00C0  /* Font option */
  70 #define CONFIG_ITEM_PASSWORD                0x00D0  /* Password option (*) */
  71
  72 #define CONFIG_ITEM                         0x00F0
  73
  74 /*******************************************************************
  75  * All predefined categories and subcategories
  76  *******************************************************************/
  77 #define CAT_INTERFACE 1
  78    #define SUBCAT_INTERFACE_GENERAL 101
  79    #define SUBCAT_INTERFACE_MAIN 102
  80    #define SUBCAT_INTERFACE_CONTROL 103
  81    #define SUBCAT_INTERFACE_HOTKEYS 104
  82
  83 #define CAT_AUDIO 2
  84    #define SUBCAT_AUDIO_GENERAL 201
  85    #define SUBCAT_AUDIO_AOUT 202
  86    #define SUBCAT_AUDIO_AFILTER 203
  87    #define SUBCAT_AUDIO_VISUAL 204
  88    #define SUBCAT_AUDIO_MISC 205
  89
  90 #define CAT_VIDEO 3
  91    #define SUBCAT_VIDEO_GENERAL 301
  92    #define SUBCAT_VIDEO_VOUT 302
  93    #define SUBCAT_VIDEO_VFILTER 303
  94    #define SUBCAT_VIDEO_TEXT 304
  95    #define SUBCAT_VIDEO_SUBPIC 305
  96    #define SUBCAT_VIDEO_VFILTER2 306
  97
  98 #define CAT_INPUT 4
  99    #define SUBCAT_INPUT_GENERAL 401
 100    #define SUBCAT_INPUT_ACCESS 402
 101    #define SUBCAT_INPUT_DEMUX 403
 102    #define SUBCAT_INPUT_VCODEC 404
 103    #define SUBCAT_INPUT_ACODEC 405
 104    #define SUBCAT_INPUT_SCODEC 406
 105    #define SUBCAT_INPUT_STREAM_FILTER 407
 106
 107 #define CAT_SOUT 5
 108    #define SUBCAT_SOUT_GENERAL 501
 109    #define SUBCAT_SOUT_STREAM 502
 110    #define SUBCAT_SOUT_MUX 503
 111    #define SUBCAT_SOUT_ACO 504
 112    #define SUBCAT_SOUT_PACKETIZER 505
 113    #define SUBCAT_SOUT_SAP 506
 114    #define SUBCAT_SOUT_VOD 507
 115
 116 #define CAT_ADVANCED 6
 117    #define SUBCAT_ADVANCED_CPU 601
 118    #define SUBCAT_ADVANCED_MISC 602
 119    #define SUBCAT_ADVANCED_NETWORK 603
 120    #define SUBCAT_ADVANCED_XML 604
 121
 122 #define CAT_PLAYLIST 7
 123    #define SUBCAT_PLAYLIST_GENERAL 701
 124    #define SUBCAT_PLAYLIST_SD 702
 125    #define SUBCAT_PLAYLIST_EXPORT 703
 126
 127 #define CAT_OSD 8
 128    #define SUBCAT_OSD_IMPORT 801
 129
 130 struct config_category_t
 131 {
 132     int         i_id;
 133     const char *psz_name;
 134     const char *psz_help;
 135 };
 136
 137 typedef union
 138 {
 139     char       *psz;
 140     int         i;
 141     float       f;
 142 } module_value_t;
 143
 144 typedef union
 145 {
 146     int         i;
 147     float       f;
 148 } module_nvalue_t;
 149
 150 struct module_config_t
 151 {
 152     int          i_type;                               /* Configuration type */
 153     char        *psz_type;                          /* Configuration subtype */
 154     char        *psz_name;                                    /* Option name */
 155     char         i_short;                      /* Optional short option name */
 156     char        *psz_text;      /* Short comment on the configuration option */
 157     char        *psz_longtext;   /* Long comment on the configuration option */
 158     module_value_t value;                                    /* Option value */
 159     module_value_t orig;
 160     module_value_t saved;
 161     module_nvalue_t min;
 162     module_nvalue_t max;
 163
 164     /* Function to call when commiting a change */
 165     vlc_callback_t pf_callback;
 166     void          *p_callback_data;
 167
 168     /* Values list */
 169     char **      ppsz_list;       /* List of possible values for the option */
 170     int         *pi_list;                              /* Idem for integers */
 171     char       **ppsz_list_text;          /* Friendly names for list values */
 172     int          i_list;                               /* Options list size */
 173     vlc_callback_t pf_update_list; /*callback to initialize dropdownlists */
 174
 175     /* Actions list */
 176     vlc_callback_t *ppf_action;    /* List of possible actions for a config */
 177     char          **ppsz_action_text;         /* Friendly names for actions */
 178     int            i_action;                           /* actions list size */
 179
 180     /* Misc */
 181     vlc_mutex_t *p_lock;           /* Lock to use when modifying the config */
 182     bool        b_dirty;          /* Dirty flag to indicate a config change */
 183     bool        b_advanced;          /* Flag to indicate an advanced option */
 184     bool        b_internal;   /* Flag to indicate option is not to be shown */
 185     bool        b_restart;   /* Flag to indicate the option needs a restart */
 186                               /* to take effect */
 187
 188     /* Deprecated */
 189     char        *psz_oldname;                          /* Old option name */
 190     bool        b_removed;
 191
 192     /* Option values loaded from config file */
 193     bool        b_autosave;      /* Config will be auto-saved at exit time */
 194     bool        b_unsaveable;                /* Config should not be saved */
 195
 196     bool        b_safe;
 197 };
 198
 199 /*****************************************************************************
 200  * Prototypes - these methods are used to get, set or manipulate configuration
 201  * data.
 202  *****************************************************************************/
 203 VLC_EXPORT( int,    __config_GetType,  (vlc_object_t *, const char *) LIBVLC_USED );
 204 VLC_EXPORT( int,    __config_GetInt,   (vlc_object_t *, const char *) LIBVLC_USED );
 205 VLC_EXPORT( void,   __config_PutInt,   (vlc_object_t *, const char *, int) );
 206 VLC_EXPORT( float,  __config_GetFloat, (vlc_object_t *, const char *) LIBVLC_USED );
 207 VLC_EXPORT( void,   __config_PutFloat, (vlc_object_t *, const char *, float) );
 208 VLC_EXPORT( char *, __config_GetPsz,   (vlc_object_t *, const char *) LIBVLC_USED );
 209 VLC_EXPORT( void,   __config_PutPsz,   (vlc_object_t *, const char *, const char *) );
 210
 211 #define config_SaveConfigFile(a,b) __config_SaveConfigFile(VLC_OBJECT(a),b)
 212 VLC_EXPORT( int,    __config_SaveConfigFile, ( vlc_object_t *, const char * ) );
 213 #define config_ResetAll(a) __config_ResetAll(VLC_OBJECT(a))
 214 VLC_EXPORT( void,   __config_ResetAll, ( vlc_object_t * ) );
 215
 216 VLC_EXPORT( module_config_t *, config_FindConfig,( vlc_object_t *, const char * ) LIBVLC_USED );
 217
 218 VLC_EXPORT(const char *, config_GetDataDir, ( void ) LIBVLC_USED);
 219 VLC_EXPORT(const char *, config_GetConfDir, ( void ) LIBVLC_USED);
 220 VLC_EXPORT(const char *, config_GetHomeDir, ( void ) LIBVLC_USED);
 221 VLC_EXPORT(char *, config_GetUserConfDir, ( void ) LIBVLC_USED);
 222 VLC_EXPORT(char *, config_GetUserDataDir, ( void ) LIBVLC_USED);
 223 VLC_EXPORT(char *, config_GetCacheDir, ( void ) LIBVLC_USED);
 224
 225 VLC_EXPORT( void,       __config_AddIntf,    ( vlc_object_t *, const char * ) );
 226 VLC_EXPORT( void,       __config_RemoveIntf, ( vlc_object_t *, const char * ) );
 227 VLC_EXPORT( bool, __config_ExistIntf,  ( vlc_object_t *, const char * ) LIBVLC_USED);
 228
 229 #define config_GetType(a,b) __config_GetType(VLC_OBJECT(a),b)
 230 #define config_GetInt(a,b) __config_GetInt(VLC_OBJECT(a),b)
 231 #define config_PutInt(a,b,c) __config_PutInt(VLC_OBJECT(a),b,c)
 232 #define config_GetFloat(a,b) __config_GetFloat(VLC_OBJECT(a),b)
 233 #define config_PutFloat(a,b,c) __config_PutFloat(VLC_OBJECT(a),b,c)
 234 #define config_GetPsz(a,b) __config_GetPsz(VLC_OBJECT(a),b)
 235 #define config_PutPsz(a,b,c) __config_PutPsz(VLC_OBJECT(a),b,c)
 236
 237 #define config_AddIntf(a,b) __config_AddIntf(VLC_OBJECT(a),b)
 238 #define config_RemoveIntf(a,b) __config_RemoveIntf(VLC_OBJECT(a),b)
 239 #define config_ExistIntf(a,b) __config_ExistIntf(VLC_OBJECT(a),b)
 240
 241 /****************************************************************************
 242  * config_chain_t:
 243  ****************************************************************************/
 244 struct config_chain_t
 245 {
 246     config_chain_t *p_next;     /**< Pointer on the next config_chain_t element */
 247
 248     char        *psz_name;      /**< Option name */
 249     char        *psz_value;     /**< Option value */
 250 };
 251
 252 /**
 253  * This function will
 254  * - create all options in the array ppsz_options (var_Create).
 255  * - parse the given linked list of config_chain_t and set the value (var_Set).
 256  *
 257  * The option names will be created by adding the psz_prefix prefix.
 258  */
 259 #define config_ChainParse( a, b, c, d ) __config_ChainParse( VLC_OBJECT(a), b, c, d )
 260 VLC_EXPORT( void,   __config_ChainParse, ( vlc_object_t *, const char *psz_prefix, const char *const *ppsz_options, config_chain_t * ) );
 261
 262 /**
 263  * This function will parse a configuration string (psz_string) and
 264  * - set the module name (*ppsz_name)
 265  * - set all options for this module in a chained list (*pp_cfg)
 266  * - returns a pointer on the next module if any.
 267  *
 268  * The string format is
 269  *   module{option=*,option=*}[:modulenext{option=*,...}]
 270  *
 271  * The options values are unescaped using config_StringUnescape.
 272  */
 273 VLC_EXPORT( char *, config_ChainCreate, ( char **ppsz_name, config_chain_t **pp_cfg, const char *psz_string ) );
 274
 275 /**
 276  * This function will release a linked list of config_chain_t
 277  * (Including the head)
 278  */
 279 VLC_EXPORT( void, config_ChainDestroy, ( config_chain_t * ) );
 280
 281 /**
 282  * This function will unescape a string in place and will return a pointer on
 283  * the given string.
 284  * No memory is allocated by it (unlike config_StringEscape).
 285  * If NULL is given as parameter nothing will be done (NULL will be returned).
 286  *
 287  * The following sequences will be unescaped (only one time):
 288  * \\ \' and \"
 289  */
 290 VLC_EXPORT( char *, config_StringUnescape, ( char *psz_string ) );
 291
 292 /**
 293  * This function will escape a string that can be unescaped by
 294  * config_StringUnescape.
 295  * The returned value is allocated by it. You have to free it once you
 296  * do not need it anymore (unlike config_StringUnescape).
 297  * If NULL is given as parameter nothing will be done (NULL will be returned).
 298  *
 299  * The escaped characters are ' " and \
 300  */
 301 VLC_EXPORT( char *, config_StringEscape, ( const char *psz_string ) LIBVLC_USED);
 302
 303 # ifdef __cplusplus
 304 }
 305 # endif
 306
 307 #endif /* _VLC_CONFIGURATION_H */