1 /*****************************************************************************
2 * geatures.c: control vlc with mouse gestures
3 *****************************************************************************
4 * Copyright (C) 2002 VideoLAN
5 * $Id: gestures.c,v 1.6 2003/11/05 00:39:16 gbazin Exp $
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() */
35 #include "stream_control.h"
36 #include "input_ext-intf.h"
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" )
78 #define THRESHOLD_LONGTEXT N_( \
79 "the amount of movement required for a mouse" \
80 " gesture to be recorded" )
82 #define BUTTON_TEXT N_( "Mouse button" )
83 #define BUTTON_LONGTEXT N_( \
84 "the mouse button to be held down during mouse gestures" )
86 static char *button_list[] = { "left", "middle", "right" };
87 static char *button_list_text[] = { N_("Left"), N_("Middle"), N_("Right") };
90 add_category_hint( N_( "Gestures" ), NULL, VLC_FALSE );
91 add_integer( "gestures-threshold", 30, NULL, THRESHOLD_TEXT, THRESHOLD_LONGTEXT, VLC_TRUE );
92 add_string( "gestures-button", "right", NULL,
93 BUTTON_TEXT, BUTTON_LONGTEXT, VLC_FALSE );
94 change_string_list( button_list, button_list_text, 0 );
95 set_description( _("mouse gestures control interface") );
97 set_capability( "interface", 0 );
98 set_callbacks( E_(Open), E_(Close) );
101 /*****************************************************************************
102 * OpenIntf: initialize interface
103 *****************************************************************************/
104 int E_(Open) ( vlc_object_t *p_this )
106 intf_thread_t *p_intf = (intf_thread_t *)p_this;
108 /* Allocate instance and initialize some members */
109 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
110 if( p_intf->p_sys == NULL )
115 p_intf->pf_run = RunIntf;
120 /*****************************************************************************
121 * gesture: return a subpattern within a pattern
122 *****************************************************************************/
123 static int gesture( int i_pattern, int i_num )
125 return ( i_pattern >> ( i_num * 4 ) ) & 0xF;
128 /*****************************************************************************
129 * CloseIntf: destroy dummy interface
130 *****************************************************************************/
131 void E_(Close) ( vlc_object_t *p_this )
133 intf_thread_t *p_intf = (intf_thread_t *)p_this;
135 /* Destroy structure */
136 free( p_intf->p_sys );
140 /*****************************************************************************
142 *****************************************************************************/
143 static void RunIntf( intf_thread_t *p_intf )
145 playlist_t * p_playlist = NULL;
146 p_intf->p_sys->p_vout = NULL;
148 if( InitThread( p_intf ) < 0 )
150 msg_Err( p_intf, "can't initialize intf" );
153 msg_Dbg( p_intf, "intf initialized" );
156 while( !p_intf->b_die )
158 vlc_mutex_lock( &p_intf->change_lock );
163 if( p_intf->p_sys->b_got_gesture )
166 switch( p_intf->p_sys->i_pattern )
169 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
171 if( p_playlist == NULL )
176 playlist_Prev( p_playlist );
177 vlc_object_release( p_playlist );
180 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
182 if( p_playlist == NULL )
187 playlist_Next( p_playlist );
188 vlc_object_release( p_playlist );
190 case GESTURE(UP,RIGHT,NONE,NONE):
191 if (p_intf->p_sys->p_vout )
193 ((vout_thread_t *)p_intf->p_sys->p_vout)->i_changes |=
194 VOUT_FULLSCREEN_CHANGE;
197 case GESTURE(DOWN,RIGHT,NONE,NONE):
198 /* FIXME: Should close the vout!"*/
199 p_intf->p_vlc->b_die = VLC_TRUE;
201 case GESTURE(DOWN,LEFT,UP,RIGHT):
202 msg_Dbg(p_intf, "A square!" );
207 p_intf->p_sys->i_num_gestures = 0;
208 p_intf->p_sys->i_pattern = 0;
209 p_intf->p_sys->b_got_gesture = VLC_FALSE;
213 vlc_mutex_unlock( &p_intf->change_lock );
218 if( p_intf->p_sys->p_vout && p_intf->p_sys->p_vout->b_die )
220 var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
221 MouseEvent, p_intf );
222 var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
223 MouseEvent, p_intf );
224 vlc_object_release( p_intf->p_sys->p_vout );
225 p_intf->p_sys->p_vout = NULL;
228 if( p_intf->p_sys->p_vout == NULL )
230 p_intf->p_sys->p_vout = vlc_object_find( p_intf,
231 VLC_OBJECT_VOUT, FIND_ANYWHERE );
232 if( p_intf->p_sys->p_vout )
234 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
235 MouseEvent, p_intf );
236 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
237 MouseEvent, p_intf );
242 msleep( INTF_IDLE_SLEEP );
245 if( p_intf->p_sys->p_vout )
247 var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
248 MouseEvent, p_intf );
249 var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
250 MouseEvent, p_intf );
251 vlc_object_release( p_intf->p_sys->p_vout );
255 /*****************************************************************************
257 *****************************************************************************/
258 static int InitThread( intf_thread_t * p_intf )
261 /* we might need some locking here */
264 input_thread_t * p_input;
266 p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT, FIND_PARENT );
268 vlc_mutex_lock( &p_intf->change_lock );
270 p_intf->p_sys->p_input = p_input;
271 p_intf->p_sys->b_got_gesture = VLC_FALSE;
272 p_intf->p_sys->b_button_pressed = VLC_FALSE;
273 p_intf->p_sys->i_threshold = config_GetInt( p_intf, "gestures-threshold" );
274 psz_button = config_GetPsz( p_intf, "gestures-button" );
275 if ( !strcmp( psz_button, "left" ) )
277 p_intf->p_sys->i_button_mask = 1;
279 else if ( !strcmp( psz_button, "middle" ) )
281 p_intf->p_sys->i_button_mask = 2;
283 else if ( !strcmp( psz_button, "right" ) )
285 p_intf->p_sys->i_button_mask = 4;
288 p_intf->p_sys->i_pattern = 0;
289 p_intf->p_sys->i_num_gestures = 0;
290 vlc_mutex_unlock( &p_intf->change_lock );
300 /*****************************************************************************
301 * MouseEvent: callback for mouse events
302 *****************************************************************************/
303 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
304 vlc_value_t oldval, vlc_value_t newval, void *p_data )
309 signed int i_horizontal, i_vertical;
310 intf_thread_t *p_intf = (intf_thread_t *)p_data;
312 /* don't process new gestures before the last events are processed */
313 if( p_intf->p_sys->b_got_gesture ) {
317 vlc_mutex_lock( &p_intf->change_lock );
318 if( !strcmp(psz_var, "mouse-moved" ) && p_intf->p_sys->b_button_pressed ) {
319 var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
320 p_intf->p_sys->i_mouse_x = val.i_int;
321 var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
322 p_intf->p_sys->i_mouse_y = val.i_int;
323 i_horizontal = p_intf->p_sys->i_mouse_x -
324 p_intf->p_sys->i_last_x;
325 i_horizontal = i_horizontal / p_intf->p_sys->i_threshold;
326 i_vertical = p_intf->p_sys->i_mouse_y
327 - p_intf->p_sys->i_last_y;
328 i_vertical = i_vertical / p_intf->p_sys->i_threshold;
330 if ( i_horizontal < 0 )
332 msg_Dbg( p_intf, "left gesture(%d)", i_horizontal );
335 else if ( i_horizontal > 0 )
337 msg_Dbg( p_intf, "right gesture(%d)", i_horizontal );
340 if ( i_vertical < 0 )
342 msg_Dbg( p_intf, "up gesture(%d)", i_vertical );
345 else if ( i_vertical > 0 )
347 msg_Dbg( p_intf, "down gesture(%d)", i_vertical );
352 p_intf->p_sys->i_last_y = p_intf->p_sys->i_mouse_y;
353 p_intf->p_sys->i_last_x = p_intf->p_sys->i_mouse_x;
354 if( gesture(p_intf->p_sys->i_pattern, p_intf->p_sys->i_num_gestures - 1 ) != pattern )
356 p_intf->p_sys->i_pattern |= pattern << ( p_intf->p_sys->i_num_gestures * 4 );
357 p_intf->p_sys->i_num_gestures++;
362 if( !strcmp( psz_var, "mouse-button-down" ) && newval.i_int & p_intf->p_sys->i_button_mask
363 && !p_intf->p_sys->b_button_pressed )
365 p_intf->p_sys->b_button_pressed = VLC_TRUE;
366 var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
367 p_intf->p_sys->i_last_x = val.i_int;
368 var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
369 p_intf->p_sys->i_last_y = val.i_int;
371 if( !strcmp( psz_var, "mouse-button-down" ) && !( newval.i_int & p_intf->p_sys->i_button_mask )
372 && p_intf->p_sys->b_button_pressed )
374 p_intf->p_sys->b_button_pressed = VLC_FALSE;
375 p_intf->p_sys->b_got_gesture = VLC_TRUE;
378 vlc_mutex_unlock( &p_intf->change_lock );