src/misc/actions.c

   1 /*****************************************************************************
   2  * actions.c: handle vlc actions
   3  *****************************************************************************
   4  * Copyright (C) 2003-2016 VLC authors and VideoLAN
   5  *
   6  * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU Lesser General Public License as published by
  10  * the Free Software Foundation; either version 2.1 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifdef HAVE_CONFIG_H
  24 # include <config.h>
  25 #endif
  26
  27 /**
  28  * \file
  29  * This file defines functions and structures for hotkey handling in vlc
  30  */
  31
  32 #include <assert.h>
  33 #include <stdlib.h>
  34 #include <limits.h>
  35 #ifdef HAVE_SEARCH_H
  36 # include <search.h>
  37 #endif
  38 #include <errno.h>
  39
  40 #include <vlc_common.h>
  41 #include <vlc_actions.h>
  42 #include <vlc_charset.h>
  43 #include "config/configuration.h"
  44 #include "libvlc.h"
  45
  46 static const struct key_descriptor
  47 {
  48     const char psz[20];
  49     uint32_t i_code;
  50 } s_keys[] =
  51 {   /* Alphabetical order */
  52     { N_("Backspace"),         KEY_BACKSPACE         },
  53     { N_("Brightness Down"),   KEY_BRIGHTNESS_DOWN   },
  54     { N_("Brightness Up"),     KEY_BRIGHTNESS_UP     },
  55     { N_("Browser Back"),      KEY_BROWSER_BACK      },
  56     { N_("Browser Favorites"), KEY_BROWSER_FAVORITES },
  57     { N_("Browser Forward"),   KEY_BROWSER_FORWARD   },
  58     { N_("Browser Home"),      KEY_BROWSER_HOME      },
  59     { N_("Browser Refresh"),   KEY_BROWSER_REFRESH   },
  60     { N_("Browser Search"),    KEY_BROWSER_SEARCH    },
  61     { N_("Browser Stop"),      KEY_BROWSER_STOP      },
  62     { N_("Delete"),            KEY_DELETE            },
  63     { N_("Down"),              KEY_DOWN              },
  64     { N_("End"),               KEY_END               },
  65     { N_("Enter"),             KEY_ENTER             },
  66     { N_("Esc"),               KEY_ESC               },
  67     { N_("F1"),                KEY_F1                },
  68     { N_("F10"),               KEY_F10               },
  69     { N_("F11"),               KEY_F11               },
  70     { N_("F12"),               KEY_F12               },
  71     { N_("F2"),                KEY_F2                },
  72     { N_("F3"),                KEY_F3                },
  73     { N_("F4"),                KEY_F4                },
  74     { N_("F5"),                KEY_F5                },
  75     { N_("F6"),                KEY_F6                },
  76     { N_("F7"),                KEY_F7                },
  77     { N_("F8"),                KEY_F8                },
  78     { N_("F9"),                KEY_F9                },
  79     { N_("Home"),              KEY_HOME              },
  80     { N_("Insert"),            KEY_INSERT            },
  81     { N_("Left"),              KEY_LEFT              },
  82     { N_("Media Angle"),       KEY_MEDIA_ANGLE       },
  83     { N_("Media Audio Track"), KEY_MEDIA_AUDIO       },
  84     { N_("Media Forward"),     KEY_MEDIA_FORWARD     },
  85     { N_("Media Menu"),        KEY_MEDIA_MENU        },
  86     { N_("Media Next Frame"),  KEY_MEDIA_FRAME_NEXT  },
  87     { N_("Media Next Track"),  KEY_MEDIA_NEXT_TRACK  },
  88     { N_("Media Play Pause"),  KEY_MEDIA_PLAY_PAUSE  },
  89     { N_("Media Prev Frame"),  KEY_MEDIA_FRAME_PREV  },
  90     { N_("Media Prev Track"),  KEY_MEDIA_PREV_TRACK  },
  91     { N_("Media Record"),      KEY_MEDIA_RECORD      },
  92     { N_("Media Repeat"),      KEY_MEDIA_REPEAT      },
  93     { N_("Media Rewind"),      KEY_MEDIA_REWIND      },
  94     { N_("Media Select"),      KEY_MEDIA_SELECT      },
  95     { N_("Media Shuffle"),     KEY_MEDIA_SHUFFLE     },
  96     { N_("Media Stop"),        KEY_MEDIA_STOP        },
  97     { N_("Media Subtitle"),    KEY_MEDIA_SUBTITLE    },
  98     { N_("Media Time"),        KEY_MEDIA_TIME        },
  99     { N_("Media View"),        KEY_MEDIA_VIEW        },
 100     { N_("Menu"),              KEY_MENU              },
 101     { N_("Mouse Wheel Down"),  KEY_MOUSEWHEELDOWN    },
 102     { N_("Mouse Wheel Left"),  KEY_MOUSEWHEELLEFT    },
 103     { N_("Mouse Wheel Right"), KEY_MOUSEWHEELRIGHT   },
 104     { N_("Mouse Wheel Up"),    KEY_MOUSEWHEELUP      },
 105     { N_("Page Down"),         KEY_PAGEDOWN          },
 106     { N_("Page Up"),           KEY_PAGEUP            },
 107     { N_("Pause"),             KEY_PAUSE             },
 108     { N_("Print"),             KEY_PRINT             },
 109     { N_("Right"),             KEY_RIGHT             },
 110     { N_("Space"),             ' '                   },
 111     { N_("Tab"),               KEY_TAB               },
 112     { N_("Unset"),             KEY_UNSET             },
 113     { N_("Up"),                KEY_UP                },
 114     { N_("Volume Down"),       KEY_VOLUME_DOWN       },
 115     { N_("Volume Mute"),       KEY_VOLUME_MUTE       },
 116     { N_("Volume Up"),         KEY_VOLUME_UP         },
 117     { N_("Zoom In"),           KEY_ZOOM_IN           },
 118     { N_("Zoom Out"),          KEY_ZOOM_OUT          },
 119 };
 120 #define KEYS_COUNT (sizeof(s_keys)/sizeof(s_keys[0]))
 121
 122 static int keystrcmp (const void *key, const void *elem)
 123 {
 124     const char *sa = key, *sb = elem;
 125     return strcmp (sa, sb);
 126 }
 127
 128 /* Convert Unicode code point to UTF-8 */
 129 static char *utf8_cp (uint_fast32_t cp, char *buf)
 130 {
 131     if (cp < (1 << 7))
 132     {
 133         buf[1] = 0;
 134         buf[0] = cp;
 135     }
 136     else if (cp < (1 << 11))
 137     {
 138         buf[2] = 0;
 139         buf[1] = 0x80 | (cp & 0x3F);
 140         cp >>= 6;
 141         buf[0] = 0xC0 | cp;
 142     }
 143     else if (cp < (1 << 16))
 144     {
 145         buf[3] = 0;
 146         buf[2] = 0x80 | (cp & 0x3F);
 147         cp >>= 6;
 148         buf[1] = 0x80 | (cp & 0x3F);
 149         cp >>= 6;
 150         buf[0] = 0xE0 | cp;
 151     }
 152     else if (cp < (1 << 21))
 153     {
 154         buf[4] = 0;
 155         buf[3] = 0x80 | (cp & 0x3F);
 156         cp >>= 6;
 157         buf[2] = 0x80 | (cp & 0x3F);
 158         cp >>= 6;
 159         buf[1] = 0x80 | (cp & 0x3F);
 160         cp >>= 6;
 161         buf[0] = 0xE0 | cp;
 162     }
 163     else
 164         return NULL;
 165     return buf;
 166 }
 167
 168 /**
 169  * Parse a human-readable string representation of a VLC key code.
 170  * @note This only works with the American English representation
 171  * (a.k.a. C or POSIX), not with the local representation returned from
 172  * vlc_keycode2str().
 173  * @return a VLC key code, or KEY_UNSET on failure.
 174  */
 175 uint_fast32_t vlc_str2keycode (const char *name)
 176 {
 177     uint_fast32_t mods = 0;
 178     uint32_t code;
 179
 180     for (;;)
 181     {
 182         size_t len = strcspn (name, "-+");
 183         if (len == 0 || name[len] == '\0')
 184             break;
 185
 186         if (len == 4 && !strncasecmp (name, "Ctrl", 4))
 187             mods |= KEY_MODIFIER_CTRL;
 188         if (len == 3 && !strncasecmp (name, "Alt", 3))
 189             mods |= KEY_MODIFIER_ALT;
 190         if (len == 5 && !strncasecmp (name, "Shift", 5))
 191             mods |= KEY_MODIFIER_SHIFT;
 192         if (len == 4 && !strncasecmp (name, "Meta", 4))
 193             mods |= KEY_MODIFIER_META;
 194         if (len == 7 && !strncasecmp (name, "Command", 7))
 195             mods |= KEY_MODIFIER_COMMAND;
 196
 197         name += len + 1;
 198     }
 199
 200     struct key_descriptor *d = bsearch (name, s_keys, KEYS_COUNT,
 201                                         sizeof (s_keys[0]), keystrcmp);
 202     if (d != NULL)
 203         code = d->i_code;
 204     else
 205     if (vlc_towc (name, &code) <= 0)
 206         code = KEY_UNSET;
 207
 208     if (code != KEY_UNSET)
 209         code |= mods;
 210     return code;
 211 }
 212
 213 static char *nooptext (const char *txt)
 214 {
 215     return (char *)txt;
 216 }
 217
 218 /**
 219  * Format a human-readable and unique representation of a VLC key code
 220  * (including modifiers).
 221  * @param code key code to translate to a string
 222  * @param locale true to get a localized string,
 223  *               false to get a C string suitable for 'vlcrc'
 224  * @return a heap-allocated string, or NULL on error.
 225  */
 226 char *vlc_keycode2str (uint_fast32_t code, bool locale)
 227 {
 228     char *(*tr) (const char *) = locale ? vlc_gettext : nooptext;
 229     const char *name;
 230     char *str, buf[5];
 231     uintptr_t key = code & ~KEY_MODIFIER;
 232
 233     for (size_t i = 0; i < KEYS_COUNT; i++)
 234         if (s_keys[i].i_code == key)
 235         {
 236             name = s_keys[i].psz;
 237             goto found;
 238         }
 239
 240     if (utf8_cp (key, buf) == NULL)
 241         return NULL;
 242     name = buf;
 243
 244 found:
 245     if (asprintf (&str, "%s%s%s%s%s%s",
 246                   (code & KEY_MODIFIER_CTRL) ? tr(N_("Ctrl+")) : "",
 247                   (code & KEY_MODIFIER_ALT) ? tr(N_("Alt+")) : "",
 248                   (code & KEY_MODIFIER_SHIFT) ? tr(N_("Shift+")) : "",
 249                   (code & KEY_MODIFIER_META) ? tr(N_("Meta+")) : "",
 250                   (code & KEY_MODIFIER_COMMAND) ? tr(N_("Command+")) : "",
 251                   tr(name)) == -1)
 252         return NULL;
 253     return str;
 254 }
 255
 256
 257 /*** VLC key map ***/
 258
 259 #define MAXACTION 26
 260 static const struct name2action
 261 {
 262     char psz[MAXACTION];
 263     vlc_action_id_t id;
 264 } s_names2actions[] =
 265 {
 266     /* *MUST* be sorted (ASCII order) */
 267     { "aspect-ratio", ACTIONID_ASPECT_RATIO, },
 268     { "audio-track", ACTIONID_AUDIO_TRACK, },
 269     { "audiodelay-down", ACTIONID_AUDIODELAY_DOWN, },
 270     { "audiodelay-up", ACTIONID_AUDIODELAY_UP, },
 271     { "audiodevice-cycle", ACTIONID_AUDIODEVICE_CYCLE, },
 272     { "chapter-next", ACTIONID_CHAPTER_NEXT, },
 273     { "chapter-prev", ACTIONID_CHAPTER_PREV, },
 274     { "clear-playlist", ACTIONID_PLAY_CLEAR, },
 275     { "crop", ACTIONID_CROP, },
 276     { "crop-bottom", ACTIONID_CROP_BOTTOM, },
 277     { "crop-left", ACTIONID_CROP_LEFT, },
 278     { "crop-right", ACTIONID_CROP_RIGHT, },
 279     { "crop-top", ACTIONID_CROP_TOP, },
 280     { "decr-scalefactor", ACTIONID_SCALE_DOWN, },
 281     { "deinterlace", ACTIONID_DEINTERLACE, },
 282     { "deinterlace-mode", ACTIONID_DEINTERLACE_MODE, },
 283     { "disc-menu", ACTIONID_DISC_MENU, },
 284     { "faster", ACTIONID_FASTER, },
 285     { "frame-next", ACTIONID_FRAME_NEXT, },
 286     { "incr-scalefactor", ACTIONID_SCALE_UP, },
 287     { "intf-boss", ACTIONID_INTF_BOSS, },
 288     { "intf-popup-menu", ACTIONID_INTF_POPUP_MENU, },
 289     { "intf-show", ACTIONID_INTF_TOGGLE_FSC, },
 290     { "jump+extrashort", ACTIONID_JUMP_FORWARD_EXTRASHORT, },
 291     { "jump+long", ACTIONID_JUMP_FORWARD_LONG, },
 292     { "jump+medium", ACTIONID_JUMP_FORWARD_MEDIUM, },
 293     { "jump+short", ACTIONID_JUMP_FORWARD_SHORT, },
 294     { "jump-extrashort", ACTIONID_JUMP_BACKWARD_EXTRASHORT, },
 295     { "jump-long", ACTIONID_JUMP_BACKWARD_LONG, },
 296     { "jump-medium", ACTIONID_JUMP_BACKWARD_MEDIUM, },
 297     { "jump-short", ACTIONID_JUMP_BACKWARD_SHORT, },
 298     { "leave-fullscreen", ACTIONID_LEAVE_FULLSCREEN, },
 299     { "loop", ACTIONID_LOOP, },
 300     { "nav-activate", ACTIONID_NAV_ACTIVATE, },
 301     { "nav-down", ACTIONID_NAV_DOWN, },
 302     { "nav-left", ACTIONID_NAV_LEFT, },
 303     { "nav-right", ACTIONID_NAV_RIGHT, },
 304     { "nav-up", ACTIONID_NAV_UP, },
 305     { "next", ACTIONID_NEXT, },
 306     { "pause", ACTIONID_PAUSE, },
 307     { "play", ACTIONID_PLAY, },
 308     { "play-bookmark1", ACTIONID_PLAY_BOOKMARK1, },
 309     { "play-bookmark10", ACTIONID_PLAY_BOOKMARK10, },
 310     { "play-bookmark2", ACTIONID_PLAY_BOOKMARK2, },
 311     { "play-bookmark3", ACTIONID_PLAY_BOOKMARK3, },
 312     { "play-bookmark4", ACTIONID_PLAY_BOOKMARK4, },
 313     { "play-bookmark5", ACTIONID_PLAY_BOOKMARK5, },
 314     { "play-bookmark6", ACTIONID_PLAY_BOOKMARK6, },
 315     { "play-bookmark7", ACTIONID_PLAY_BOOKMARK7, },
 316     { "play-bookmark8", ACTIONID_PLAY_BOOKMARK8, },
 317     { "play-bookmark9", ACTIONID_PLAY_BOOKMARK9, },
 318     { "play-pause", ACTIONID_PLAY_PAUSE, },
 319     { "position", ACTIONID_POSITION, },
 320     { "prev", ACTIONID_PREV, },
 321     { "program-sid-next", ACTIONID_PROGRAM_SID_NEXT, },
 322     { "program-sid-prev", ACTIONID_PROGRAM_SID_PREV, },
 323     { "quit", ACTIONID_QUIT, },
 324     { "random", ACTIONID_RANDOM, },
 325     { "rate-faster-fine", ACTIONID_RATE_FASTER_FINE, },
 326     { "rate-normal", ACTIONID_RATE_NORMAL, },
 327     { "rate-slower-fine", ACTIONID_RATE_SLOWER_FINE, },
 328     { "record", ACTIONID_RECORD, },
 329     { "set-bookmark1", ACTIONID_SET_BOOKMARK1, },
 330     { "set-bookmark10", ACTIONID_SET_BOOKMARK10, },
 331     { "set-bookmark2", ACTIONID_SET_BOOKMARK2, },
 332     { "set-bookmark3", ACTIONID_SET_BOOKMARK3, },
 333     { "set-bookmark4", ACTIONID_SET_BOOKMARK4, },
 334     { "set-bookmark5", ACTIONID_SET_BOOKMARK5, },
 335     { "set-bookmark6", ACTIONID_SET_BOOKMARK6, },
 336     { "set-bookmark7", ACTIONID_SET_BOOKMARK7, },
 337     { "set-bookmark8", ACTIONID_SET_BOOKMARK8, },
 338     { "set-bookmark9", ACTIONID_SET_BOOKMARK9, },
 339     { "slower", ACTIONID_SLOWER, },
 340     { "snapshot", ACTIONID_SNAPSHOT, },
 341     { "stop", ACTIONID_STOP, },
 342     { "subdelay-down", ACTIONID_SUBDELAY_DOWN, },
 343     { "subdelay-up", ACTIONID_SUBDELAY_UP, },
 344     { "subpos-down", ACTIONID_SUBPOS_DOWN, },
 345     { "subpos-up", ACTIONID_SUBPOS_UP, },
 346     { "subsync-apply", ACTIONID_SUBSYNC_APPLY, },
 347     { "subsync-markaudio", ACTIONID_SUBSYNC_MARKAUDIO, },
 348     { "subsync-marksub", ACTIONID_SUBSYNC_MARKSUB, },
 349     { "subsync-reset", ACTIONID_SUBSYNC_RESET, },
 350     { "subtitle-revtrack", ACTIONID_SUBTITLE_REVERSE_TRACK, },
 351     { "subtitle-text-scale-down", ACTIONID_SUBTITLE_TEXT_SCALE_DOWN, },
 352     { "subtitle-text-scale-normal", ACTIONID_SUBTITLE_TEXT_SCALE_NORMAL, },
 353     { "subtitle-text-scale-up", ACTIONID_SUBTITLE_TEXT_SCALE_UP, },
 354     { "subtitle-toggle", ACTIONID_SUBTITLE_TOGGLE, },
 355     { "subtitle-track", ACTIONID_SUBTITLE_TRACK, },
 356     { "title-next", ACTIONID_TITLE_NEXT, },
 357     { "title-prev", ACTIONID_TITLE_PREV, },
 358     { "toggle-autoscale", ACTIONID_TOGGLE_AUTOSCALE, },
 359     { "toggle-fullscreen", ACTIONID_TOGGLE_FULLSCREEN, },
 360     { "uncrop-bottom", ACTIONID_UNCROP_BOTTOM, },
 361     { "uncrop-left", ACTIONID_UNCROP_LEFT, },
 362     { "uncrop-right", ACTIONID_UNCROP_RIGHT, },
 363     { "uncrop-top", ACTIONID_UNCROP_TOP, },
 364     { "unzoom", ACTIONID_UNZOOM, },
 365     { "viewpoint-fov-in", ACTIONID_VIEWPOINT_FOV_IN, },
 366     { "viewpoint-fov-out", ACTIONID_VIEWPOINT_FOV_OUT, },
 367     { "viewpoint-roll-anticlock", ACTIONID_VIEWPOINT_ROLL_ANTICLOCK, },
 368     { "viewpoint-roll-clock", ACTIONID_VIEWPOINT_ROLL_CLOCK, },
 369     { "vol-down", ACTIONID_VOL_DOWN, },
 370     { "vol-mute", ACTIONID_VOL_MUTE, },
 371     { "vol-up", ACTIONID_VOL_UP, },
 372     { "wallpaper", ACTIONID_WALLPAPER, },
 373     { "zoom", ACTIONID_ZOOM, },
 374     { "zoom-double", ACTIONID_ZOOM_DOUBLE, },
 375     { "zoom-half", ACTIONID_ZOOM_HALF, },
 376     { "zoom-original", ACTIONID_ZOOM_ORIGINAL, },
 377     { "zoom-quarter", ACTIONID_ZOOM_QUARTER, },
 378 };
 379 #define ACTIONS_COUNT (sizeof (s_names2actions) / sizeof (s_names2actions[0]))
 380
 381 struct mapping
 382 {
 383     uint32_t     key; ///< Key code
 384     vlc_action_id_t action; ///< Action ID
 385 };
 386
 387 static int keycmp (const void *a, const void *b)
 388 {
 389     const struct mapping *ka = a, *kb = b;
 390
 391     return (ka->key < kb->key) ? -1 : (ka->key > kb->key) ? +1 : 0;
 392 }
 393
 394 struct vlc_actions_t
 395 {
 396     void *map; /* Key map */
 397     void *global_map; /* Grabbed/global key map */
 398     const char *ppsz_keys[];
 399 };
 400
 401 static int vlc_key_to_action (vlc_object_t *obj, const char *varname,
 402                               vlc_value_t prevkey, vlc_value_t curkey, void *d)
 403 {
 404     void *const *map = d;
 405     const struct mapping **pent;
 406     uint32_t keycode = curkey.i_int;
 407
 408     pent = tfind (&keycode, map, keycmp);
 409     if (pent == NULL)
 410         return VLC_SUCCESS;
 411
 412     (void) varname;
 413     (void) prevkey;
 414     return var_SetInteger (obj, "key-action", (*pent)->action);
 415 }
 416
 417 /**
 418  * Adds a mapping from a certain key code to a certain action.
 419  */
 420 static int add_mapping (void **map, uint32_t keycode, vlc_action_id_t action)
 421 {
 422     struct mapping *entry = malloc (sizeof (*entry));
 423     if (entry == NULL)
 424         return ENOMEM;
 425     entry->key = keycode;
 426     entry->action = action;
 427
 428     struct mapping **pent = tsearch (entry, map, keycmp);
 429     if (unlikely(pent == NULL))
 430         return ENOMEM;
 431     if (*pent != entry)
 432     {
 433         free (entry);
 434         return EEXIST;
 435     }
 436     return 0;
 437 }
 438
 439 static void add_wheel_mapping (void **map, uint32_t kmore, uint32_t kless,
 440                                  int mode)
 441 {
 442     vlc_action_id_t amore = ACTIONID_NONE, aless = ACTIONID_NONE;
 443
 444     switch (mode)
 445     {
 446         case 0: /* volume up/down */
 447             amore = ACTIONID_COMBO_VOL_FOV_UP;
 448             aless = ACTIONID_COMBO_VOL_FOV_DOWN;
 449             break;
 450         case 2: /* position latter/earlier */
 451             amore = ACTIONID_JUMP_FORWARD_EXTRASHORT;
 452             aless = ACTIONID_JUMP_BACKWARD_EXTRASHORT;
 453             break;
 454         case 3: /* position earlier/latter */
 455             amore = ACTIONID_JUMP_BACKWARD_EXTRASHORT;
 456             aless = ACTIONID_JUMP_FORWARD_EXTRASHORT;
 457             break;
 458     }
 459
 460     if (amore != ACTIONID_NONE)
 461         add_mapping (map, kmore, amore);
 462     if (aless != ACTIONID_NONE)
 463         add_mapping (map, kless, aless);
 464 }
 465
 466
 467 /**
 468  * Sets up all key mappings for a given action.
 469  * \param map tree (of struct mapping entries) to write mappings to
 470  * \param confname VLC configuration item to read mappings from
 471  * \param action action ID
 472  */
 473 static void init_action (vlc_object_t *obj, void **map,
 474                             const char *confname, vlc_action_id_t action)
 475 {
 476     char *keys = var_InheritString (obj, confname);
 477     if (keys == NULL)
 478         return;
 479
 480     for (char *buf, *key = strtok_r (keys, "\t", &buf);
 481          key != NULL;
 482          key = strtok_r (NULL, "\t", &buf))
 483     {
 484         uint32_t code = vlc_str2keycode (key);
 485         if (code == KEY_UNSET)
 486         {
 487             msg_Warn (obj, "Key \"%s\" unrecognized", key);
 488             continue;
 489         }
 490
 491         if (add_mapping (map, code, action) == EEXIST)
 492             msg_Warn (obj, "Key \"%s\" bound to multiple actions", key);
 493     }
 494     free (keys);
 495 }
 496
 497 /**
 498  * Initializes the key map from configuration.
 499  */
 500 int libvlc_InternalActionsInit (libvlc_int_t *libvlc)
 501 {
 502     assert(libvlc != NULL);
 503
 504     vlc_object_t *obj = VLC_OBJECT(libvlc);
 505     vlc_actions_t *as = malloc (sizeof (*as) + (1 + ACTIONS_COUNT)
 506                       * sizeof (*as->ppsz_keys));
 507
 508     if (unlikely(as == NULL))
 509         return VLC_ENOMEM;
 510     as->map = NULL;
 511     as->global_map = NULL;
 512
 513     var_Create (obj, "key-pressed", VLC_VAR_INTEGER);
 514     var_Create (obj, "global-key-pressed", VLC_VAR_INTEGER);
 515     var_Create (obj, "key-action", VLC_VAR_INTEGER);
 516
 517     /* Initialize from configuration */
 518     for (size_t i = 0; i < ACTIONS_COUNT; i++)
 519     {
 520 #ifndef NDEBUG
 521         if (i > 0
 522          && strcmp (s_names2actions[i-1].psz, s_names2actions[i].psz) >= 0)
 523         {
 524             msg_Err (libvlc, "key-%s and key-%s are not ordered properly",
 525                      s_names2actions[i-1].psz, s_names2actions[i].psz);
 526             abort ();
 527         }
 528 #endif
 529         as->ppsz_keys[i] = s_names2actions[i].psz;
 530
 531         char name[12 + MAXACTION];
 532
 533         snprintf (name, sizeof (name), "global-key-%s", s_names2actions[i].psz);
 534         init_action (obj, &as->map, name + 7, s_names2actions[i].id);
 535         init_action (obj, &as->global_map, name, s_names2actions[i].id);
 536     }
 537     as->ppsz_keys[ACTIONS_COUNT] = NULL;
 538
 539     /* Initialize mouse wheel events */
 540     add_wheel_mapping (&as->map, KEY_MOUSEWHEELRIGHT, KEY_MOUSEWHEELLEFT,
 541                          var_InheritInteger (obj, "hotkeys-x-wheel-mode"));
 542     add_wheel_mapping (&as->map, KEY_MOUSEWHEELUP, KEY_MOUSEWHEELDOWN,
 543                          var_InheritInteger (obj, "hotkeys-y-wheel-mode"));
 544
 545     libvlc_priv(libvlc)->actions = as;
 546     var_AddCallback (obj, "key-pressed", vlc_key_to_action, &as->map);
 547     var_AddCallback (obj, "global-key-pressed", vlc_key_to_action,
 548                      &as->global_map);
 549     return VLC_SUCCESS;
 550 }
 551
 552 /**
 553  * Destroys the key map.
 554  */
 555 void libvlc_InternalActionsClean (libvlc_int_t *libvlc)
 556 {
 557     assert(libvlc != NULL);
 558
 559     vlc_actions_t *as = libvlc_priv(libvlc)->actions;
 560     if (unlikely(as == NULL))
 561         return;
 562
 563     var_DelCallback (libvlc, "global-key-pressed", vlc_key_to_action,
 564                      &as->global_map);
 565     var_DelCallback (libvlc, "key-pressed", vlc_key_to_action, &as->map);
 566
 567     tdestroy (as->global_map, free);
 568     tdestroy (as->map, free);
 569     free (as);
 570     libvlc_priv(libvlc)->actions = NULL;
 571 }
 572
 573
 574 static int actcmp(const void *key, const void *ent)
 575 {
 576     const struct name2action *act = ent;
 577     return strcmp(key, act->psz);
 578 }
 579
 580 /**
 581  * Get the action ID from the action name in the configuration subsystem.
 582  * @return the action ID or ACTIONID_NONE on error.
 583  */
 584 vlc_action_id_t
 585 vlc_actions_get_id (const char *name)
 586 {
 587     const struct name2action *act;
 588
 589     if (strncmp (name, "key-", 4))
 590         return ACTIONID_NONE;
 591     name += 4;
 592
 593     act = bsearch(name, s_names2actions, ACTIONS_COUNT, sizeof(*act), actcmp);
 594     return (act != NULL) ? act->id : ACTIONID_NONE;
 595 }
 596
 597 #undef vlc_actions_get_keycodes
 598 size_t
 599 vlc_actions_get_keycodes(vlc_object_t *p_obj, const char *psz_key_name,
 600                         bool b_global, uint_fast32_t **pp_keycodes)
 601 {
 602     char varname[12 /* "global-key-" */ + strlen( psz_key_name )];
 603     sprintf( varname, "%skey-%s", b_global ? "global-" : "", psz_key_name );
 604
 605     *pp_keycodes = NULL;
 606
 607     char *psz_keys = var_InheritString( p_obj, varname );
 608     if( psz_keys == NULL )
 609         return 0;
 610
 611     size_t i_nb_keycodes = 0;
 612     for( const char* psz_it = psz_keys; *psz_it; ++psz_it )
 613     {
 614         if( *psz_it == '\t' )
 615             ++i_nb_keycodes;
 616     }
 617     ++i_nb_keycodes;
 618     *pp_keycodes = vlc_alloc( i_nb_keycodes, sizeof( **pp_keycodes ) );
 619     if( unlikely( !*pp_keycodes ) )
 620     {
 621         free( psz_keys );
 622         return 0;
 623     }
 624     size_t i = 0;
 625     for( char *buf, *key = strtok_r( psz_keys, "\t", &buf );
 626          key != NULL;
 627          key = strtok_r( NULL, "\t", &buf ), ++i )
 628     {
 629         (*pp_keycodes)[i] = vlc_str2keycode( key );
 630     }
 631     assert( i == i_nb_keycodes );
 632     free( psz_keys );
 633     return i_nb_keycodes;
 634 }
 635
 636 #undef vlc_actions_get_key_names
 637 const char* const*
 638 vlc_actions_get_key_names(vlc_object_t *p_obj)
 639 {
 640     vlc_actions_t *as = libvlc_priv(p_obj->obj.libvlc)->actions;
 641     return as->ppsz_keys;
 642 }