1 /*****************************************************************************
2 * gestures.c: control vlc with mouse gestures
3 *****************************************************************************
4 * Copyright (C) 2004 VideoLAN
7 * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
38 /*****************************************************************************
39 * intf_sys_t: description and status of interface
40 *****************************************************************************/
43 vlc_object_t * p_vout;
44 input_thread_t * p_input;
45 vlc_bool_t b_got_gesture;
46 vlc_bool_t b_button_pressed;
47 int i_mouse_x, i_mouse_y;
48 int i_last_x, i_last_y;
49 unsigned int i_pattern;
55 /*****************************************************************************
57 *****************************************************************************/
63 #define GESTURE( a, b, c, d ) (a | ( b << 4 ) | ( c << 8 ) | ( d << 12 ))
65 int E_(Open) ( vlc_object_t * );
66 void E_(Close) ( vlc_object_t * );
67 static int InitThread ( intf_thread_t *p_intf );
68 static int MouseEvent ( vlc_object_t *, char const *,
69 vlc_value_t, vlc_value_t, void * );
71 /* Exported functions */
72 static void RunIntf ( intf_thread_t *p_intf );
74 /*****************************************************************************
76 *****************************************************************************/
77 #define THRESHOLD_TEXT N_( "Motion threshold (10-100)" )
78 #define THRESHOLD_LONGTEXT N_( \
79 "Amount of movement required for a mouse" \
80 " gesture to be recorded." )
82 #define BUTTON_TEXT N_( "Trigger button" )
83 #define BUTTON_LONGTEXT N_( \
84 "You can set the trigger button for mouse gestures here." )
86 static char *button_list[] = { "left", "middle", "right" };
87 static char *button_list_text[] = { N_("Left"), N_("Middle"), N_("Right") };
90 set_shortname( _("Gestures"));
91 set_category( CAT_INTERFACE );
92 set_subcategory( SUBCAT_INTERFACE_CONTROL );
93 add_integer( "gestures-threshold", 30, NULL, THRESHOLD_TEXT, THRESHOLD_LONGTEXT, VLC_TRUE );
94 add_string( "gestures-button", "right", NULL,
95 BUTTON_TEXT, BUTTON_LONGTEXT, VLC_FALSE );
96 change_string_list( button_list, button_list_text, 0 );
97 set_description( _("Mouse gestures control interface") );
99 set_capability( "interface", 0 );
100 set_callbacks( E_(Open), E_(Close) );
103 /*****************************************************************************
104 * OpenIntf: initialize interface
105 *****************************************************************************/
106 int E_(Open) ( vlc_object_t *p_this )
108 intf_thread_t *p_intf = (intf_thread_t *)p_this;
110 /* Allocate instance and initialize some members */
111 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
112 if( p_intf->p_sys == NULL )
117 p_intf->pf_run = RunIntf;
122 /*****************************************************************************
123 * gesture: return a subpattern within a pattern
124 *****************************************************************************/
125 static int gesture( int i_pattern, int i_num )
127 return ( i_pattern >> ( i_num * 4 ) ) & 0xF;
130 /*****************************************************************************
131 * CloseIntf: destroy dummy interface
132 *****************************************************************************/
133 void E_(Close) ( vlc_object_t *p_this )
135 intf_thread_t *p_intf = (intf_thread_t *)p_this;
137 /* Destroy structure */
138 free( p_intf->p_sys );
142 /*****************************************************************************
144 *****************************************************************************/
145 static void RunIntf( intf_thread_t *p_intf )
147 playlist_t * p_playlist = NULL;
148 p_intf->p_sys->p_vout = NULL;
150 if( InitThread( p_intf ) < 0 )
152 msg_Err( p_intf, "can't initialize intf" );
155 msg_Dbg( p_intf, "intf initialized" );
158 while( !p_intf->b_die )
160 vlc_mutex_lock( &p_intf->change_lock );
165 if( p_intf->p_sys->b_got_gesture )
168 switch( p_intf->p_sys->i_pattern )
171 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
173 if( p_playlist == NULL )
178 playlist_Prev( p_playlist );
179 vlc_object_release( p_playlist );
182 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
184 if( p_playlist == NULL )
189 playlist_Next( p_playlist );
190 vlc_object_release( p_playlist );
192 case GESTURE(UP,RIGHT,NONE,NONE):
193 if (p_intf->p_sys->p_vout )
195 ((vout_thread_t *)p_intf->p_sys->p_vout)->i_changes |=
196 VOUT_FULLSCREEN_CHANGE;
199 case GESTURE(DOWN,RIGHT,NONE,NONE):
200 /* FIXME: Should close the vout!"*/
201 p_intf->p_vlc->b_die = VLC_TRUE;
203 case GESTURE(DOWN,LEFT,UP,RIGHT):
204 msg_Dbg(p_intf, "a square!" );
209 p_intf->p_sys->i_num_gestures = 0;
210 p_intf->p_sys->i_pattern = 0;
211 p_intf->p_sys->b_got_gesture = VLC_FALSE;
215 vlc_mutex_unlock( &p_intf->change_lock );
220 if( p_intf->p_sys->p_vout && p_intf->p_sys->p_vout->b_die )
222 var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
223 MouseEvent, p_intf );
224 var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
225 MouseEvent, p_intf );
226 vlc_object_release( p_intf->p_sys->p_vout );
227 p_intf->p_sys->p_vout = NULL;
230 if( p_intf->p_sys->p_vout == NULL )
232 p_intf->p_sys->p_vout = vlc_object_find( p_intf,
233 VLC_OBJECT_VOUT, FIND_ANYWHERE );
234 if( p_intf->p_sys->p_vout )
236 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
237 MouseEvent, p_intf );
238 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
239 MouseEvent, p_intf );
244 msleep( INTF_IDLE_SLEEP );
247 if( p_intf->p_sys->p_vout )
249 var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
250 MouseEvent, p_intf );
251 var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
252 MouseEvent, p_intf );
253 vlc_object_release( p_intf->p_sys->p_vout );
257 /*****************************************************************************
259 *****************************************************************************/
260 static int InitThread( intf_thread_t * p_intf )
263 /* we might need some locking here */
266 input_thread_t * p_input;
268 p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT, FIND_PARENT );
270 vlc_mutex_lock( &p_intf->change_lock );
272 p_intf->p_sys->p_input = p_input;
273 p_intf->p_sys->b_got_gesture = VLC_FALSE;
274 p_intf->p_sys->b_button_pressed = VLC_FALSE;
275 p_intf->p_sys->i_threshold = config_GetInt( p_intf, "gestures-threshold" );
276 psz_button = config_GetPsz( p_intf, "gestures-button" );
277 if ( !strcmp( psz_button, "left" ) )
279 p_intf->p_sys->i_button_mask = 1;
281 else if ( !strcmp( psz_button, "middle" ) )
283 p_intf->p_sys->i_button_mask = 2;
285 else if ( !strcmp( psz_button, "right" ) )
287 p_intf->p_sys->i_button_mask = 4;
290 p_intf->p_sys->i_pattern = 0;
291 p_intf->p_sys->i_num_gestures = 0;
292 vlc_mutex_unlock( &p_intf->change_lock );
302 /*****************************************************************************
303 * MouseEvent: callback for mouse events
304 *****************************************************************************/
305 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
306 vlc_value_t oldval, vlc_value_t newval, void *p_data )
311 signed int i_horizontal, i_vertical;
312 intf_thread_t *p_intf = (intf_thread_t *)p_data;
314 /* don't process new gestures before the last events are processed */
315 if( p_intf->p_sys->b_got_gesture ) {
319 vlc_mutex_lock( &p_intf->change_lock );
320 if( !strcmp(psz_var, "mouse-moved" ) && p_intf->p_sys->b_button_pressed ) {
321 var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
322 p_intf->p_sys->i_mouse_x = val.i_int;
323 var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
324 p_intf->p_sys->i_mouse_y = val.i_int;
325 i_horizontal = p_intf->p_sys->i_mouse_x -
326 p_intf->p_sys->i_last_x;
327 i_horizontal = i_horizontal / p_intf->p_sys->i_threshold;
328 i_vertical = p_intf->p_sys->i_mouse_y
329 - p_intf->p_sys->i_last_y;
330 i_vertical = i_vertical / p_intf->p_sys->i_threshold;
332 if ( i_horizontal < 0 )
334 msg_Dbg( p_intf, "left gesture(%d)", i_horizontal );
337 else if ( i_horizontal > 0 )
339 msg_Dbg( p_intf, "right gesture(%d)", i_horizontal );
342 if ( i_vertical < 0 )
344 msg_Dbg( p_intf, "up gesture(%d)", i_vertical );
347 else if ( i_vertical > 0 )
349 msg_Dbg( p_intf, "down gesture(%d)", i_vertical );
354 p_intf->p_sys->i_last_y = p_intf->p_sys->i_mouse_y;
355 p_intf->p_sys->i_last_x = p_intf->p_sys->i_mouse_x;
356 if( gesture(p_intf->p_sys->i_pattern, p_intf->p_sys->i_num_gestures - 1 ) != pattern )
358 p_intf->p_sys->i_pattern |= pattern << ( p_intf->p_sys->i_num_gestures * 4 );
359 p_intf->p_sys->i_num_gestures++;
364 if( !strcmp( psz_var, "mouse-button-down" ) && newval.i_int & p_intf->p_sys->i_button_mask
365 && !p_intf->p_sys->b_button_pressed )
367 p_intf->p_sys->b_button_pressed = VLC_TRUE;
368 var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
369 p_intf->p_sys->i_last_x = val.i_int;
370 var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
371 p_intf->p_sys->i_last_y = val.i_int;
373 if( !strcmp( psz_var, "mouse-button-down" ) && !( newval.i_int & p_intf->p_sys->i_button_mask )
374 && p_intf->p_sys->b_button_pressed )
376 p_intf->p_sys->b_button_pressed = VLC_FALSE;
377 p_intf->p_sys->b_got_gesture = VLC_TRUE;
380 vlc_mutex_unlock( &p_intf->change_lock );