1 /*****************************************************************************
2 * xcb.c: Global-Hotkey X11 using xcb handling for vlc
3 *****************************************************************************
4 * Copyright (C) 2009 the VideoLAN team
6 * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
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 General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
26 #include <vlc_common.h>
27 #include <vlc_plugin.h>
28 #include <vlc_interface.h>
34 #include <xcb/xcb_keysyms.h>
35 #include <X11/keysym.h>
36 #include <X11/XF86keysym.h>
40 /*****************************************************************************
42 *****************************************************************************/
43 static int Open( vlc_object_t *p_this );
44 static void Close( vlc_object_t *p_this );
46 /*****************************************************************************
48 *****************************************************************************/
50 set_shortname( N_("Global Hotkeys") )
51 set_category( CAT_INTERFACE )
52 set_subcategory( SUBCAT_INTERFACE_HOTKEYS )
53 set_description( N_("Global Hotkeys interface") )
54 set_capability( "interface", 0 )
55 set_callbacks( Open, Close )
60 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
63 xcb_keycode_t *p_keys;
73 xcb_connection_t *p_connection;
75 xcb_key_symbols_t *p_symbols;
78 hotkey_mapping_t *p_map;
81 static void Mapping( intf_thread_t *p_intf );
82 static void Register( intf_thread_t *p_intf );
83 static void Unregister( intf_thread_t *p_intf );
84 static void *Thread( void *p_data );
86 /*****************************************************************************
88 *****************************************************************************/
89 static int Open( vlc_object_t *p_this )
91 intf_thread_t *p_intf = (intf_thread_t *)p_this;
94 p_intf->p_sys = p_sys = calloc( 1, sizeof(*p_sys) );
98 char *psz_display = var_CreateGetNonEmptyString( p_intf, "x11-display" );
100 int i_screen_default;
101 p_sys->p_connection = xcb_connect( psz_display, &i_screen_default );
104 if( xcb_connection_has_error( p_sys->p_connection ) )
107 /* Get the root windows of the default screen */
108 const xcb_setup_t* xcbsetup = xcb_get_setup( p_sys->p_connection );
111 xcb_screen_iterator_t iter = xcb_setup_roots_iterator( xcbsetup );
112 for( int i = 0; i < i_screen_default; i++ )
116 xcb_screen_next( &iter );
120 p_sys->root = iter.data->root;
123 p_sys->p_symbols = xcb_key_symbols_alloc( p_sys->p_connection ); // FIXME
124 if( !p_sys->p_symbols )
130 if( vlc_clone( &p_sys->thread, Thread, p_intf, VLC_THREAD_PRIORITY_LOW ) )
132 Unregister( p_intf );
133 #ifndef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
135 free( p_sys->p_map->p_keys );
137 free( p_sys->p_map );
143 if( p_sys->p_symbols )
144 xcb_key_symbols_free( p_sys->p_symbols );
145 xcb_disconnect( p_sys->p_connection );
150 /*****************************************************************************
152 *****************************************************************************/
153 static void Close( vlc_object_t *p_this )
155 intf_thread_t *p_intf = (intf_thread_t *)p_this;
156 intf_sys_t *p_sys = p_intf->p_sys;
158 vlc_cancel( p_sys->thread );
159 vlc_join( p_sys->thread, NULL );
161 Unregister( p_intf );
162 #ifndef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
164 free( p_sys->p_map->p_keys );
166 free( p_sys->p_map );
168 xcb_key_symbols_free( p_sys->p_symbols );
169 xcb_disconnect( p_sys->p_connection );
173 /*****************************************************************************
175 *****************************************************************************/
176 static unsigned GetModifier( xcb_connection_t *p_connection, xcb_key_symbols_t *p_symbols, xcb_keysym_t sym )
178 static const unsigned pi_mask[8] = {
179 XCB_MOD_MASK_SHIFT, XCB_MOD_MASK_LOCK, XCB_MOD_MASK_CONTROL,
180 XCB_MOD_MASK_1, XCB_MOD_MASK_2, XCB_MOD_MASK_3,
181 XCB_MOD_MASK_4, XCB_MOD_MASK_5
185 return 0; /* no modifier */
187 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
188 const xcb_keycode_t key = xcb_key_symbols_get_keycode( p_symbols, sym );
192 const xcb_keycode_t *p_keys = xcb_key_symbols_get_keycode( p_symbols, sym );
197 bool no_modifier = true;
198 while( p_keys[i] != XCB_NO_SYMBOL )
212 xcb_get_modifier_mapping_cookie_t r =
213 xcb_get_modifier_mapping( p_connection );
214 xcb_get_modifier_mapping_reply_t *p_map =
215 xcb_get_modifier_mapping_reply( p_connection, r, NULL );
219 xcb_keycode_t *p_keycode = xcb_get_modifier_mapping_keycodes( p_map );
223 for( int i = 0; i < 8; i++ )
224 for( int j = 0; j < p_map->keycodes_per_modifier; j++ )
225 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
226 if( p_keycode[i * p_map->keycodes_per_modifier + j] == key )
232 for( int k = 0; p_keys[k] != XCB_NO_SYMBOL; k++ )
233 if( p_keycode[i*p_map->keycodes_per_modifier + j] == p_keys[k])
240 free( p_map ); // FIXME to check
245 static unsigned GetX11Modifier( xcb_connection_t *p_connection,
246 xcb_key_symbols_t *p_symbols, unsigned i_vlc )
250 if( i_vlc & KEY_MODIFIER_ALT )
251 i_mask |= GetModifier( p_connection, p_symbols, XK_Alt_L ) |
252 GetModifier( p_connection, p_symbols, XK_Alt_R );
253 if( i_vlc & KEY_MODIFIER_CTRL )
254 i_mask |= GetModifier( p_connection, p_symbols, XK_Control_L ) |
255 GetModifier( p_connection, p_symbols, XK_Control_R );
256 if( i_vlc & KEY_MODIFIER_SHIFT )
257 i_mask |= GetModifier( p_connection, p_symbols, XK_Shift_L ) |
258 GetModifier( p_connection, p_symbols, XK_Shift_R );
262 /* FIXME this table is also used by the vout */
268 } x11keys_to_vlckeys[] =
270 { XK_F1, KEY_F1 }, { XK_F2, KEY_F2 }, { XK_F3, KEY_F3 }, { XK_F4, KEY_F4 },
271 { XK_F5, KEY_F5 }, { XK_F6, KEY_F6 }, { XK_F7, KEY_F7 }, { XK_F8, KEY_F8 },
272 { XK_F9, KEY_F9 }, { XK_F10, KEY_F10 }, { XK_F11, KEY_F11 },
275 { XK_Return, KEY_ENTER },
276 { XK_KP_Enter, KEY_ENTER },
277 { XK_Escape, KEY_ESC },
279 { XK_Menu, KEY_MENU },
280 { XK_Left, KEY_LEFT },
281 { XK_Right, KEY_RIGHT },
283 { XK_Down, KEY_DOWN },
285 { XK_Home, KEY_HOME },
287 { XK_Page_Up, KEY_PAGEUP },
288 { XK_Page_Down, KEY_PAGEDOWN },
290 { XK_Insert, KEY_INSERT },
291 { XK_Delete, KEY_DELETE },
292 { XF86XK_AudioNext, KEY_MEDIA_NEXT_TRACK},
293 { XF86XK_AudioPrev, KEY_MEDIA_PREV_TRACK},
294 { XF86XK_AudioMute, KEY_VOLUME_MUTE },
295 { XF86XK_AudioLowerVolume, KEY_VOLUME_DOWN },
296 { XF86XK_AudioRaiseVolume, KEY_VOLUME_UP },
297 { XF86XK_AudioPlay, KEY_MEDIA_PLAY_PAUSE },
298 { XF86XK_AudioPause, KEY_MEDIA_PLAY_PAUSE },
302 static xcb_keysym_t GetX11Key( unsigned i_vlc )
304 /* X11 and VLC use ASCII for printable ASCII characters */
305 if( i_vlc >= 32 && i_vlc <= 127 )
308 for( int i = 0; x11keys_to_vlckeys[i].i_vlc != 0; i++ )
310 if( x11keys_to_vlckeys[i].i_vlc == i_vlc )
311 return x11keys_to_vlckeys[i].i_x11;
314 return XK_VoidSymbol;
317 static void Mapping( intf_thread_t *p_intf )
319 static const xcb_keysym_t p_x11_modifier_ignored[] = {
326 intf_sys_t *p_sys = p_intf->p_sys;
331 /* Registering of Hotkeys */
332 for( const struct hotkey *p_hotkey = p_intf->p_libvlc->p_hotkeys;
333 p_hotkey->psz_action != NULL;
337 if( asprintf( &psz_hotkey, "global-%s", p_hotkey->psz_action ) < 0 )
340 const int i_vlc_action = p_hotkey->i_action;
341 const int i_vlc_key = config_GetInt( p_intf, psz_hotkey );
346 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
347 const xcb_keycode_t key = xcb_key_symbols_get_keycode(
348 p_sys->p_symbols, GetX11Key( i_vlc_key & ~KEY_MODIFIER ) );
350 xcb_keycode_t *p_keys = xcb_key_symbols_get_keycode(
351 p_sys->p_symbols, GetX11Key( i_vlc_key & ~KEY_MODIFIER ) );
355 const unsigned i_modifier = GetX11Modifier( p_sys->p_connection,
356 p_sys->p_symbols, i_vlc_key & KEY_MODIFIER );
358 const size_t max = sizeof(p_x11_modifier_ignored) /
359 sizeof(*p_x11_modifier_ignored);
360 for( unsigned int i = 0; i < max; i++ )
362 const unsigned i_ignored = GetModifier( p_sys->p_connection,
363 p_sys->p_symbols, p_x11_modifier_ignored[i] );
364 if( i != 0 && i_ignored == 0)
367 hotkey_mapping_t *p_map_old = p_sys->p_map;
368 p_sys->p_map = realloc( p_sys->p_map,
369 sizeof(*p_sys->p_map) * (p_sys->i_map+1) );
372 p_sys->p_map = p_map_old;
375 hotkey_mapping_t *p_map = &p_sys->p_map[p_sys->i_map++];
377 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
380 p_map->p_keys = p_keys;
382 p_map->i_modifier = i_modifier|i_ignored;
383 p_map->i_action = i_vlc_action;
388 static void Register( intf_thread_t *p_intf )
390 intf_sys_t *p_sys = p_intf->p_sys;
392 for( int i = 0; i < p_sys->i_map; i++ )
394 const hotkey_mapping_t *p_map = &p_sys->p_map[i];
395 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
396 xcb_grab_key( p_sys->p_connection, true, p_sys->root,
397 p_map->i_modifier, p_map->i_x11,
398 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC );
400 for( int j = 0; p_map->p_keys[j] != XCB_NO_SYMBOL; j++ )
402 xcb_grab_key( p_sys->p_connection, true, p_sys->root,
403 p_map->i_modifier, p_map->p_keys[j],
404 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC );
409 static void Unregister( intf_thread_t *p_intf )
411 intf_sys_t *p_sys = p_intf->p_sys;
413 for( int i = 0; i < p_sys->i_map; i++ )
415 const hotkey_mapping_t *p_map = &p_sys->p_map[i];
416 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
417 xcb_ungrab_key( p_sys->p_connection, p_map->i_x11, p_sys->root,
420 for( int j = 0; p_map->p_keys[j] != XCB_NO_SYMBOL; j++ )
421 xcb_ungrab_key( p_sys->p_connection, p_map->p_keys[j], p_sys->root,
427 static void *Thread( void *p_data )
429 intf_thread_t *p_intf = p_data;
430 intf_sys_t *p_sys = p_intf->p_sys;
431 xcb_connection_t *p_connection = p_sys->p_connection;
433 int canc = vlc_savecancel();
436 xcb_flush( p_connection );
439 int fd = xcb_get_file_descriptor( p_connection );
442 /* Wait for x11 event */
443 vlc_restorecancel( canc );
444 struct pollfd fds = { .fd = fd, .events = POLLIN, };
445 if( poll( &fds, 1, -1 ) < 0 )
449 canc = vlc_savecancel();
452 canc = vlc_savecancel();
454 xcb_generic_event_t *p_event;
455 while( ( p_event = xcb_poll_for_event( p_connection ) ) )
457 if( ( p_event->response_type & 0x7f ) != XCB_KEY_PRESS )
463 xcb_key_press_event_t *e = (xcb_key_press_event_t *)p_event;
465 for( int i = 0; i < p_sys->i_map; i++ )
467 hotkey_mapping_t *p_map = &p_sys->p_map[i];
469 #ifdef XCB_KEYSYM_OLD_API /* as seen in Debian Lenny */
470 if( p_map->i_x11 == e->detail &&
471 p_map->i_modifier == e->state )
473 var_SetInteger( p_intf->p_libvlc, "key-action",
478 bool loop_break = false;
479 for( int j = 0; p_map->p_keys[j] != XCB_NO_SYMBOL; j++ )
480 if( p_map->p_keys[j] == e->detail &&
481 p_map->i_modifier == e->state )
483 var_SetInteger( p_intf->p_libvlc, "key-action",