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>
33 #include <xcb/xcb_keysyms.h>
34 #include <X11/keysym.h>
35 #include <X11/XF86keysym.h>
39 /*****************************************************************************
41 *****************************************************************************/
42 static int Open( vlc_object_t *p_this );
43 static void Close( vlc_object_t *p_this );
45 /*****************************************************************************
47 *****************************************************************************/
49 set_shortname( N_("Global Hotkeys") )
50 set_category( CAT_INTERFACE )
51 set_subcategory( SUBCAT_INTERFACE_HOTKEYS )
52 set_description( N_("Global Hotkeys interface") )
53 set_capability( "interface", 0 )
54 set_callbacks( Open, Close )
68 xcb_connection_t *p_connection;
70 xcb_key_symbols_t *p_symbols;
73 hotkey_mapping_t *p_map;
76 static void Mapping( intf_thread_t *p_intf );
77 static void Register( intf_thread_t *p_intf );
78 static void Unregister( intf_thread_t *p_intf );
79 static void *Thread( void *p_data );
81 /*****************************************************************************
83 *****************************************************************************/
84 static int Open( vlc_object_t *p_this )
86 intf_thread_t *p_intf = (intf_thread_t *)p_this;
89 p_intf->p_sys = p_sys = calloc( 1, sizeof(*p_sys) );
93 char *psz_display = var_CreateGetNonEmptyString( p_intf, "x11-display" );
96 p_sys->p_connection = xcb_connect( psz_display, &i_screen_default );
99 if( !p_sys->p_connection )
102 /* Get the root windows of the default screen */
103 memset( &p_sys->root, 0, sizeof( p_sys->root ) );
105 const xcb_setup_t* xcbsetup = xcb_get_setup( p_sys->p_connection );
108 xcb_screen_iterator_t iter = xcb_setup_roots_iterator( xcbsetup );
109 for( int i = 0; i < i_screen_default; i++ )
113 xcb_screen_next( &iter );
117 p_sys->root = iter.data->root;
120 p_sys->p_symbols = xcb_key_symbols_alloc( p_sys->p_connection ); // FIXME
121 if( !p_sys->p_symbols )
127 if( vlc_clone( &p_sys->thread, Thread, p_intf, VLC_THREAD_PRIORITY_LOW ) )
129 Unregister( p_intf );
130 free( p_sys->p_map );
136 if( p_sys->p_symbols )
137 xcb_key_symbols_free( p_sys->p_symbols );
138 if( p_sys->p_connection )
139 xcb_disconnect( p_sys->p_connection );
144 /*****************************************************************************
146 *****************************************************************************/
147 static void Close( vlc_object_t *p_this )
149 intf_thread_t *p_intf = (intf_thread_t *)p_this;
150 intf_sys_t *p_sys = p_intf->p_sys;
152 vlc_cancel( p_sys->thread );
153 vlc_join( p_sys->thread, NULL );
155 Unregister( p_intf );
156 free( p_sys->p_map );
158 xcb_key_symbols_free( p_sys->p_symbols );
159 xcb_disconnect( p_sys->p_connection );
163 /*****************************************************************************
165 *****************************************************************************/
166 static unsigned GetModifier( xcb_connection_t *p_connection, xcb_key_symbols_t *p_symbols, xcb_keysym_t sym )
168 static const unsigned pi_mask[8] = {
169 XCB_MOD_MASK_SHIFT, XCB_MOD_MASK_LOCK, XCB_MOD_MASK_CONTROL, XCB_MOD_MASK_1,
170 XCB_MOD_MASK_2, XCB_MOD_MASK_3, XCB_MOD_MASK_4, XCB_MOD_MASK_5
173 const xcb_keycode_t key = xcb_key_symbols_get_keycode( p_symbols, sym );
177 xcb_get_modifier_mapping_cookie_t r = xcb_get_modifier_mapping( p_connection );
178 xcb_get_modifier_mapping_reply_t *p_map = xcb_get_modifier_mapping_reply( p_connection, r, NULL );
182 xcb_keycode_t *p_keycode = xcb_get_modifier_mapping_keycodes( p_map );
187 for( int i = 0; i < 8; i++ )
189 for( int j = 0; j < p_map->keycodes_per_modifier; j++ )
191 if( p_keycode[i * p_map->keycodes_per_modifier + j] == key )
196 free( p_map ); // FIXME to check
199 static unsigned GetX11Modifier( xcb_connection_t *p_connection, xcb_key_symbols_t *p_symbols, unsigned i_vlc )
203 if( i_vlc & KEY_MODIFIER_ALT )
204 i_mask |= GetModifier( p_connection, p_symbols, XK_Alt_L ) |
205 GetModifier( p_connection, p_symbols, XK_Alt_R );
206 if( i_vlc & KEY_MODIFIER_CTRL )
207 i_mask |= GetModifier( p_connection, p_symbols, XK_Control_L ) |
208 GetModifier( p_connection, p_symbols, XK_Control_R );
209 if( i_vlc & KEY_MODIFIER_SHIFT )
210 i_mask |= GetModifier( p_connection, p_symbols, XK_Shift_L ) |
211 GetModifier( p_connection, p_symbols, XK_Shift_R );
215 /* FIXME this table is also used by the vout */
221 } x11keys_to_vlckeys[] =
223 { XK_F1, KEY_F1 }, { XK_F2, KEY_F2 }, { XK_F3, KEY_F3 }, { XK_F4, KEY_F4 },
224 { XK_F5, KEY_F5 }, { XK_F6, KEY_F6 }, { XK_F7, KEY_F7 }, { XK_F8, KEY_F8 },
225 { XK_F9, KEY_F9 }, { XK_F10, KEY_F10 }, { XK_F11, KEY_F11 },
228 { XK_Return, KEY_ENTER },
229 { XK_KP_Enter, KEY_ENTER },
230 { XK_space, KEY_SPACE },
231 { XK_Escape, KEY_ESC },
233 { XK_Menu, KEY_MENU },
234 { XK_Left, KEY_LEFT },
235 { XK_Right, KEY_RIGHT },
237 { XK_Down, KEY_DOWN },
239 { XK_Home, KEY_HOME },
241 { XK_Page_Up, KEY_PAGEUP },
242 { XK_Page_Down, KEY_PAGEDOWN },
244 { XK_Insert, KEY_INSERT },
245 { XK_Delete, KEY_DELETE },
246 { XF86XK_AudioNext, KEY_MEDIA_NEXT_TRACK},
247 { XF86XK_AudioPrev, KEY_MEDIA_PREV_TRACK},
248 { XF86XK_AudioMute, KEY_VOLUME_MUTE },
249 { XF86XK_AudioLowerVolume, KEY_VOLUME_DOWN },
250 { XF86XK_AudioRaiseVolume, KEY_VOLUME_UP },
251 { XF86XK_AudioPlay, KEY_MEDIA_PLAY_PAUSE },
252 { XF86XK_AudioPause, KEY_MEDIA_PLAY_PAUSE },
256 static xcb_keysym_t GetX11Key( unsigned i_vlc )
258 for( int i = 0; x11keys_to_vlckeys[i].i_vlc != 0; i++ )
260 if( x11keys_to_vlckeys[i].i_vlc == i_vlc )
261 return x11keys_to_vlckeys[i].i_x11;
264 /* Copied from xcb, it seems that xcb use ascii code for ascii characters */
265 if( isascii( i_vlc ) )
268 return XK_VoidSymbol;
271 static void Mapping( intf_thread_t *p_intf )
273 static const xcb_keysym_t p_x11_modifier_ignored[] = {
280 intf_sys_t *p_sys = p_intf->p_sys;
285 /* Registering of Hotkeys */
286 for( struct hotkey *p_hotkey = p_intf->p_libvlc->p_hotkeys;
287 p_hotkey->psz_action != NULL;
291 if( asprintf( &psz_hotkey, "global-%s", p_hotkey->psz_action ) < 0 )
294 const int i_vlc_action = p_hotkey->i_action;
295 const int i_vlc_key = config_GetInt( p_intf, psz_hotkey );
302 const xcb_keycode_t key = xcb_key_symbols_get_keycode( p_sys->p_symbols, GetX11Key( i_vlc_key & ~KEY_MODIFIER ) );
303 const unsigned i_modifier = GetX11Modifier( p_sys->p_connection, p_sys->p_symbols, i_vlc_key & KEY_MODIFIER );
305 for( int j = 0; j < sizeof(p_x11_modifier_ignored)/sizeof(*p_x11_modifier_ignored); j++ )
307 const unsigned i_ignored = GetModifier( p_sys->p_connection, p_sys->p_symbols, p_x11_modifier_ignored[j] );
308 if( j != 0 && i_ignored == 0x00)
311 hotkey_mapping_t *p_map_old = p_sys->p_map;
312 p_sys->p_map = realloc( p_sys->p_map, sizeof(*p_sys->p_map) * (p_sys->i_map+1) );
315 p_sys->p_map = p_map_old;
318 hotkey_mapping_t *p_map = &p_sys->p_map[p_sys->i_map++];
321 p_map->i_modifier = i_modifier|i_ignored;
322 p_map->i_action = i_vlc_action;
327 static void Register( intf_thread_t *p_intf )
329 intf_sys_t *p_sys = p_intf->p_sys;
331 for( int i = 0; i < p_sys->i_map; i++ )
333 const hotkey_mapping_t *p_map = &p_sys->p_map[i];
334 xcb_grab_key( p_sys->p_connection, true, p_sys->root,
335 p_map->i_modifier, p_map->i_x11,
336 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC );
339 static void Unregister( intf_thread_t *p_intf )
341 intf_sys_t *p_sys = p_intf->p_sys;
343 for( int i = 0; i < p_sys->i_map; i++ )
345 const hotkey_mapping_t *p_map = &p_sys->p_map[i];
346 xcb_ungrab_key( p_sys->p_connection, p_map->i_x11, p_sys->root, p_map->i_modifier );
350 static void *Thread( void *p_data )
352 intf_thread_t *p_intf = p_data;
353 intf_sys_t *p_sys = p_intf->p_sys;
354 xcb_connection_t *p_connection = p_sys->p_connection;
356 int canc = vlc_savecancel();
359 xcb_flush( p_connection );
362 int fd = xcb_get_file_descriptor( p_connection );
365 /* Wait for x11 event */
366 vlc_restorecancel( canc );
367 struct pollfd fds = { .fd = fd, .events = POLLIN, };
368 if( poll( &fds, 1, -1 ) < 0 )
372 canc = vlc_savecancel();
375 canc = vlc_savecancel();
377 xcb_generic_event_t *p_event;
378 while( ( p_event = xcb_poll_for_event( p_connection ) ) )
380 if( ( p_event->response_type & 0x7f ) != XCB_KEY_PRESS )
386 xcb_key_press_event_t *e = (xcb_key_press_event_t *)p_event;
388 for( int i = 0; i < p_sys->i_map; i++ )
390 hotkey_mapping_t *p_map = &p_sys->p_map[i];
392 if( p_map->i_x11 == e->detail &&
393 p_map->i_modifier == e->state )
395 var_SetInteger( p_intf->p_libvlc, "key-action", p_map->i_action );