1 /*****************************************************************************
2 * gestures.c: control vlc with mouse gestures
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
31 #include <vlc_interface.h>
34 #include <vlc_playlist.h>
40 /*****************************************************************************
41 * intf_sys_t: description and status of interface
42 *****************************************************************************/
45 vlc_object_t * p_vout;
46 vlc_bool_t b_got_gesture;
47 vlc_bool_t b_button_pressed;
48 int i_mouse_x, i_mouse_y;
49 int i_last_x, i_last_y;
50 unsigned int i_pattern;
56 /*****************************************************************************
58 *****************************************************************************/
64 #define GESTURE( a, b, c, d ) (a | ( b << 4 ) | ( c << 8 ) | ( d << 12 ))
66 int E_(Open) ( vlc_object_t * );
67 void E_(Close) ( vlc_object_t * );
68 static int InitThread ( intf_thread_t *p_intf );
69 static void EndThread ( intf_thread_t *p_intf );
70 static int MouseEvent ( vlc_object_t *, char const *,
71 vlc_value_t, vlc_value_t, void * );
73 /* Exported functions */
74 static void RunIntf ( intf_thread_t *p_intf );
76 /*****************************************************************************
78 *****************************************************************************/
79 #define THRESHOLD_TEXT N_( "Motion threshold (10-100)" )
80 #define THRESHOLD_LONGTEXT N_( \
81 "Amount of movement required for a mouse gesture to be recorded." )
83 #define BUTTON_TEXT N_( "Trigger button" )
84 #define BUTTON_LONGTEXT N_( \
85 "Trigger button for mouse gestures." )
87 static const char *button_list[] = { "left", "middle", "right" };
88 static const char *button_list_text[] =
89 { N_("Left"), N_("Middle"), N_("Right") };
92 set_shortname( _("Gestures"));
93 set_category( CAT_INTERFACE );
94 set_subcategory( SUBCAT_INTERFACE_CONTROL );
95 add_integer( "gestures-threshold", 30, NULL,
96 THRESHOLD_TEXT, THRESHOLD_LONGTEXT, VLC_TRUE );
97 add_string( "gestures-button", "right", NULL,
98 BUTTON_TEXT, BUTTON_LONGTEXT, VLC_FALSE );
99 change_string_list( button_list, button_list_text, 0 );
100 set_description( _("Mouse gestures control interface") );
102 set_capability( "interface", 0 );
103 set_callbacks( E_(Open), E_(Close) );
106 /*****************************************************************************
107 * OpenIntf: initialize interface
108 *****************************************************************************/
109 int E_(Open) ( vlc_object_t *p_this )
111 intf_thread_t *p_intf = (intf_thread_t *)p_this;
113 /* Allocate instance and initialize some members */
114 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
115 if( p_intf->p_sys == NULL )
120 p_intf->pf_run = RunIntf;
125 /*****************************************************************************
126 * gesture: return a subpattern within a pattern
127 *****************************************************************************/
128 static int gesture( int i_pattern, int i_num )
130 return ( i_pattern >> ( i_num * 4 ) ) & 0xF;
133 /*****************************************************************************
134 * input_from_playlist: don't forget to release the return value
135 * Also this function should really be available from core.
136 *****************************************************************************/
137 static input_thread_t * input_from_playlist ( playlist_t *p_playlist )
139 input_thread_t * p_input;
142 p_input = p_playlist->p_input;
144 vlc_object_yield( p_input );
150 /*****************************************************************************
151 * CloseIntf: destroy dummy interface
152 *****************************************************************************/
153 void E_(Close) ( vlc_object_t *p_this )
155 intf_thread_t *p_intf = (intf_thread_t *)p_this;
157 /* Destroy structure */
158 free( p_intf->p_sys );
162 /*****************************************************************************
164 *****************************************************************************/
165 static void RunIntf( intf_thread_t *p_intf )
167 playlist_t * p_playlist = NULL;
169 if( InitThread( p_intf ) < 0 )
171 msg_Err( p_intf, "can't initialize interface thread" );
174 msg_Dbg( p_intf, "interface thread initialized" );
177 while( !intf_ShouldDie( p_intf ) )
179 vlc_mutex_lock( &p_intf->change_lock );
184 if( p_intf->p_sys->b_got_gesture )
189 /* If you modify this, please try to follow this convention:
190 Start with LEFT, RIGHT for playback related commands
191 and UP, DOWN, for other commands */
192 switch( p_intf->p_sys->i_pattern )
195 i_interval = config_GetInt( p_intf , "short-jump-size" );
196 if ( i_interval > 0 ) {
197 val.i_time = ( (mtime_t)( -i_interval ) * 1000000L);
198 var_Set( p_intf, "time-offset", val );
200 msg_Dbg(p_intf, "Go backward in the movie!");
203 i_interval = config_GetInt( p_intf , "short-jump-size" );
204 if ( i_interval > 0 ) {
205 val.i_time = ( (mtime_t)( i_interval ) * 1000000L);
206 var_Set( p_intf, "time-offset", val );
208 msg_Dbg(p_intf, "Go forward in the movie!");
210 case GESTURE(LEFT,UP,NONE,NONE):
212 msg_Dbg(p_intf, "Going slower.");
214 case GESTURE(RIGHT,UP,NONE,NONE):
216 msg_Dbg(p_intf, "Going faster.");
218 case GESTURE(LEFT,RIGHT,NONE,NONE):
219 case GESTURE(RIGHT,LEFT,NONE,NONE):
221 input_thread_t * p_input;
222 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
228 p_input = input_from_playlist( p_playlist );
229 vlc_object_release( p_playlist );
234 val.i_int = PLAYING_S;
237 var_Get( p_input, "state", &val);
238 if( val.i_int == PAUSE_S )
240 val.i_int = PLAYING_S;
246 var_Set( p_input, "state", val);
248 msg_Dbg(p_intf, "Play/Pause");
249 vlc_object_release( p_input );
252 case GESTURE(LEFT,DOWN,NONE,NONE):
253 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
255 if( p_playlist == NULL )
260 playlist_Prev( p_playlist );
261 vlc_object_release( p_playlist );
263 case GESTURE(RIGHT,DOWN,NONE,NONE):
264 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
266 if( p_playlist == NULL )
271 playlist_Next( p_playlist );
272 vlc_object_release( p_playlist );
276 audio_volume_t i_newvol;
277 aout_VolumeUp( p_intf, 1, &i_newvol );
278 msg_Dbg(p_intf, "Louder");
283 audio_volume_t i_newvol;
284 aout_VolumeDown( p_intf, 1, &i_newvol );
285 msg_Dbg(p_intf, "Quieter");
288 case GESTURE(UP,DOWN,NONE,NONE):
289 case GESTURE(DOWN,UP,NONE,NONE):
291 audio_volume_t i_newvol = -1;
292 aout_VolumeMute( p_intf, &i_newvol );
293 msg_Dbg(p_intf, "Mute sound");
296 case GESTURE(UP,RIGHT,NONE,NONE):
298 input_thread_t * p_input;
299 vlc_value_t val, list, list2;
302 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
308 p_input = input_from_playlist( p_playlist );
310 vlc_object_release( p_playlist );
315 var_Get( p_input, "audio-es", &val );
316 var_Change( p_input, "audio-es", VLC_VAR_GETCHOICES,
318 i_count = list.p_list->i_count;
321 vlc_object_release( p_input );
324 for( i = 0; i < i_count; i++ )
326 if( val.i_int == list.p_list->p_values[i].i_int )
328 vlc_object_release( p_input );
332 /* value of audio-es was not in choices list */
336 "invalid current audio track, selecting 0" );
337 var_Set( p_input, "audio-es",
338 list.p_list->p_values[0] );
341 else if( i == i_count - 1 )
343 var_Set( p_input, "audio-es",
344 list.p_list->p_values[1] );
349 var_Set( p_input, "audio-es",
350 list.p_list->p_values[i+1] );
353 vlc_object_release( p_input );
356 case GESTURE(DOWN,RIGHT,NONE,NONE):
358 input_thread_t * p_input;
359 vlc_value_t val, list, list2;
362 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
368 p_input = input_from_playlist( p_playlist );
369 vlc_object_release( p_playlist );
374 var_Get( p_input, "spu-es", &val );
376 var_Change( p_input, "spu-es", VLC_VAR_GETCHOICES,
378 i_count = list.p_list->i_count;
381 vlc_object_release( p_input );
384 for( i = 0; i < i_count; i++ )
386 if( val.i_int == list.p_list->p_values[i].i_int )
388 vlc_object_release( p_input );
392 /* value of spu-es was not in choices list */
396 "invalid current subtitle track, selecting 0" );
397 var_Set( p_input, "spu-es", list.p_list->p_values[0] );
400 else if( i == i_count - 1 )
402 var_Set( p_input, "spu-es", list.p_list->p_values[0] );
407 var_Set( p_input, "spu-es",
408 list.p_list->p_values[i+1] );
411 vlc_object_release( p_input );
414 case GESTURE(UP,LEFT,NONE,NONE):
415 if (p_intf->p_sys->p_vout )
417 ((vout_thread_t *)p_intf->p_sys->p_vout)->i_changes |=
418 VOUT_FULLSCREEN_CHANGE;
421 case GESTURE(DOWN,LEFT,NONE,NONE):
422 /* FIXME: Should close the vout!"*/
423 p_intf->p_libvlc->b_die = VLC_TRUE;
425 case GESTURE(DOWN,LEFT,UP,RIGHT):
426 case GESTURE(UP,RIGHT,DOWN,LEFT):
427 msg_Dbg(p_intf, "a square was drawn!" );
432 p_intf->p_sys->i_num_gestures = 0;
433 p_intf->p_sys->i_pattern = 0;
434 p_intf->p_sys->b_got_gesture = VLC_FALSE;
440 if( p_intf->p_sys->p_vout && p_intf->p_sys->p_vout->b_die )
442 var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
443 MouseEvent, p_intf );
444 var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
445 MouseEvent, p_intf );
446 vlc_object_release( p_intf->p_sys->p_vout );
447 p_intf->p_sys->p_vout = NULL;
450 if( p_intf->p_sys->p_vout == NULL )
452 p_intf->p_sys->p_vout = vlc_object_find( p_intf,
453 VLC_OBJECT_VOUT, FIND_ANYWHERE );
454 if( p_intf->p_sys->p_vout )
456 var_AddCallback( p_intf->p_sys->p_vout, "mouse-moved",
457 MouseEvent, p_intf );
458 var_AddCallback( p_intf->p_sys->p_vout, "mouse-button-down",
459 MouseEvent, p_intf );
463 vlc_mutex_unlock( &p_intf->change_lock );
466 msleep( INTF_IDLE_SLEEP );
472 /*****************************************************************************
474 *****************************************************************************/
475 static int InitThread( intf_thread_t * p_intf )
478 /* we might need some locking here */
479 if( !intf_ShouldDie( p_intf ) )
481 /* p_intf->change_lock locking strategy:
482 * - Every access to p_intf->p_sys are locked threw p_intf->change_lock
483 * - make sure there won't be cross increment/decrement ref count
484 * of p_intf->p_sys members p_intf->change_lock should be locked
485 * during those operations */
486 vlc_mutex_lock( &p_intf->change_lock );
488 p_intf->p_sys->b_got_gesture = VLC_FALSE;
489 p_intf->p_sys->b_button_pressed = VLC_FALSE;
490 p_intf->p_sys->i_threshold =
491 config_GetInt( p_intf, "gestures-threshold" );
492 psz_button = config_GetPsz( p_intf, "gestures-button" );
493 if ( !strcmp( psz_button, "left" ) )
495 p_intf->p_sys->i_button_mask = 1;
497 else if ( !strcmp( psz_button, "middle" ) )
499 p_intf->p_sys->i_button_mask = 2;
501 else if ( !strcmp( psz_button, "right" ) )
503 p_intf->p_sys->i_button_mask = 4;
506 p_intf->p_sys->i_pattern = 0;
507 p_intf->p_sys->i_num_gestures = 0;
508 vlc_mutex_unlock( &p_intf->change_lock );
518 /*****************************************************************************
520 *****************************************************************************/
521 static void EndThread( intf_thread_t * p_intf )
523 vlc_mutex_lock( &p_intf->change_lock );
525 if( p_intf->p_sys->p_vout )
527 var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
528 MouseEvent, p_intf );
529 var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
530 MouseEvent, p_intf );
531 vlc_object_release( p_intf->p_sys->p_vout );
534 vlc_mutex_unlock( &p_intf->change_lock );
537 /*****************************************************************************
538 * MouseEvent: callback for mouse events
539 *****************************************************************************/
540 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
541 vlc_value_t oldval, vlc_value_t newval, void *p_data )
546 signed int i_horizontal, i_vertical;
547 intf_thread_t *p_intf = (intf_thread_t *)p_data;
549 vlc_mutex_lock( &p_intf->change_lock );
551 /* don't process new gestures before the last events are processed */
552 if( p_intf->p_sys->b_got_gesture )
554 vlc_mutex_unlock( &p_intf->change_lock );
558 if( !strcmp(psz_var, "mouse-moved" ) && p_intf->p_sys->b_button_pressed )
560 var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
561 p_intf->p_sys->i_mouse_x = val.i_int;
562 var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
563 p_intf->p_sys->i_mouse_y = val.i_int;
564 i_horizontal = p_intf->p_sys->i_mouse_x -
565 p_intf->p_sys->i_last_x;
566 i_horizontal = i_horizontal / p_intf->p_sys->i_threshold;
567 i_vertical = p_intf->p_sys->i_mouse_y
568 - p_intf->p_sys->i_last_y;
569 i_vertical = i_vertical / p_intf->p_sys->i_threshold;
571 if( i_horizontal < 0 )
573 msg_Dbg( p_intf, "left gesture (%d)", i_horizontal );
576 else if( i_horizontal > 0 )
578 msg_Dbg( p_intf, "right gesture (%d)", i_horizontal );
583 msg_Dbg( p_intf, "up gesture (%d)", i_vertical );
586 else if( i_vertical > 0 )
588 msg_Dbg( p_intf, "down gesture (%d)", i_vertical );
593 p_intf->p_sys->i_last_y = p_intf->p_sys->i_mouse_y;
594 p_intf->p_sys->i_last_x = p_intf->p_sys->i_mouse_x;
595 if( gesture( p_intf->p_sys->i_pattern,
596 p_intf->p_sys->i_num_gestures - 1 ) != pattern )
598 p_intf->p_sys->i_pattern |=
599 pattern << ( p_intf->p_sys->i_num_gestures * 4 );
600 p_intf->p_sys->i_num_gestures++;
605 if( !strcmp( psz_var, "mouse-button-down" )
606 && newval.i_int & p_intf->p_sys->i_button_mask
607 && !p_intf->p_sys->b_button_pressed )
609 p_intf->p_sys->b_button_pressed = VLC_TRUE;
610 var_Get( p_intf->p_sys->p_vout, "mouse-x", &val );
611 p_intf->p_sys->i_last_x = val.i_int;
612 var_Get( p_intf->p_sys->p_vout, "mouse-y", &val );
613 p_intf->p_sys->i_last_y = val.i_int;
615 if( !strcmp( psz_var, "mouse-button-down" )
616 && !( newval.i_int & p_intf->p_sys->i_button_mask )
617 && p_intf->p_sys->b_button_pressed )
619 p_intf->p_sys->b_button_pressed = VLC_FALSE;
620 p_intf->p_sys->b_got_gesture = VLC_TRUE;
623 vlc_mutex_unlock( &p_intf->change_lock );