1 /*****************************************************************************
2 * motion.c: control VLC with laptop built-in motion sensors
3 *****************************************************************************
4 * Copyright (C) 2006 - 2007 the VideoLAN team
7 * Author: Sam Hocevar <sam@zoy.org>
8 * Jérôme Decoodt <djc@videolan.org> (unimotion integration)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
37 #include <vlc_interface.h>
38 #include <vlc_playlist.h>
42 # include "TargetConditionals.h"
43 # if !TARGET_OS_IPHONE
44 # define HAVE_MACOS_UNIMOTION
48 #ifdef HAVE_MACOS_UNIMOTION
49 # include "unimotion.h"
52 /*****************************************************************************
53 * intf_sys_t: description and status of interface
54 *****************************************************************************/
57 enum { NO_SENSOR, HDAPS_SENSOR, AMS_SENSOR, APPLESMC_SENSOR,
58 UNIMOTION_SENSOR } sensor;
59 #ifdef HAVE_MACOS_UNIMOTION
60 enum sms_hardware unimotion_hw;
67 /*****************************************************************************
69 *****************************************************************************/
70 static int Open ( vlc_object_t * );
71 static void Close ( vlc_object_t * );
73 static void RunIntf( intf_thread_t *p_intf );
74 static int GetOrientation( intf_thread_t *p_intf );
76 #define USE_ROTATE_TEXT N_("Use the rotate video filter instead of transform")
78 /*****************************************************************************
80 *****************************************************************************/
82 set_shortname( N_("motion"))
83 set_category( CAT_INTERFACE )
84 set_subcategory( SUBCAT_INTERFACE_CONTROL )
85 set_description( N_("motion control interface") )
86 set_help( N_("Use HDAPS, AMS, APPLESMC or UNIMOTION motion sensors " \
87 "to rotate the video") )
89 add_bool( "motion-use-rotate", false,
90 USE_ROTATE_TEXT, USE_ROTATE_TEXT, false )
92 set_capability( "interface", 0 )
93 set_callbacks( Open, Close )
96 /*****************************************************************************
97 * OpenIntf: initialise interface
98 *****************************************************************************/
99 int Open ( vlc_object_t *p_this )
101 intf_thread_t *p_intf = (intf_thread_t *)p_this;
103 int i_x = 0, i_y = 0;
105 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
106 if( p_intf->p_sys == NULL )
111 if( access( "/sys/devices/platform/hdaps/position", R_OK ) == 0 )
113 /* IBM HDAPS support */
114 f = fopen( "/sys/devices/platform/hdaps/calibrate", "r" );
117 p_intf->p_sys->i_calibrate = fscanf( f, "(%d,%d)", &i_x, &i_y ) == 2 ? i_x: 0;
119 p_intf->p_sys->sensor = HDAPS_SENSOR;
123 p_intf->p_sys->sensor = NO_SENSOR;
126 else if( access( "/sys/devices/ams/x", R_OK ) == 0 )
128 /* Apple Motion Sensor support */
129 p_intf->p_sys->sensor = AMS_SENSOR;
131 else if( access( "/sys/devices/applesmc.768/position", R_OK ) == 0 )
133 /* Apple SMC (newer macbooks) */
134 /* Should be factorised with HDAPS */
135 f = fopen( "/sys/devices/applesmc.768/calibrate", "r" );
138 p_intf->p_sys->i_calibrate = fscanf( f, "(%d,%d)", &i_x, &i_y ) == 2 ? i_x: 0;
140 p_intf->p_sys->sensor = APPLESMC_SENSOR;
144 p_intf->p_sys->sensor = NO_SENSOR;
147 #ifdef HAVE_MACOS_UNIMOTION
148 else if( (p_intf->p_sys->unimotion_hw = detect_sms()) )
149 p_intf->p_sys->sensor = UNIMOTION_SENSOR;
153 /* No motion sensor support */
154 p_intf->p_sys->sensor = NO_SENSOR;
157 p_intf->pf_run = RunIntf;
159 p_intf->p_sys->b_use_rotate = var_InheritBool( p_intf, "motion-use-rotate" );
161 msg_Dbg( p_intf, "Motion detection correctly loaded" );
165 /*****************************************************************************
166 * CloseIntf: destroy interface
167 *****************************************************************************/
168 void Close ( vlc_object_t *p_this )
170 intf_thread_t *p_intf = (intf_thread_t *)p_this;
172 free( p_intf->p_sys );
175 /*****************************************************************************
177 *****************************************************************************/
178 #define FILTER_LENGTH 16
179 #define LOW_THRESHOLD 800
180 #define HIGH_THRESHOLD 1000
181 static void RunIntf( intf_thread_t *p_intf )
183 int i_x, i_oldx = 0, i_sum = 0, i = 0;
184 int p_oldx[FILTER_LENGTH];
185 memset( p_oldx, 0, FILTER_LENGTH * sizeof( int ) );
189 const char *psz_filter, *psz_type;
190 bool b_change = false;
192 /* Wait a bit, get orientation, change filter if necessary */
193 #warning FIXME: check once (or less) per picture, not once per interval
194 msleep( INTF_IDLE_SLEEP );
196 int canc = vlc_savecancel();
197 i_x = GetOrientation( p_intf );
198 i_sum += i_x - p_oldx[i];
200 if( i == FILTER_LENGTH ) i = 0;
201 i_x = i_sum / FILTER_LENGTH;
203 if( p_intf->p_sys->b_use_rotate )
207 /* TODO: cache object pointer */
208 vlc_object_t *p_obj =
209 vlc_object_find_name( p_intf->p_libvlc, "rotate" );
212 var_SetInteger( p_obj, "rotate-deciangle",
213 ((3600+i_x/2)%3600) );
215 vlc_object_release( p_obj );
221 if( i_x < -HIGH_THRESHOLD && i_oldx > -LOW_THRESHOLD )
224 psz_filter = "transform";
227 else if( ( i_x > -LOW_THRESHOLD && i_oldx < -HIGH_THRESHOLD )
228 || ( i_x < LOW_THRESHOLD && i_oldx > HIGH_THRESHOLD ) )
234 else if( i_x > HIGH_THRESHOLD && i_oldx < LOW_THRESHOLD )
237 psz_filter = "transform";
243 #warning FIXME: refactor this plugin as a video filter!
244 input_thread_t *p_input;
246 p_input = playlist_CurrentInput( pl_Get( p_intf ) );
249 vout_thread_t *p_vout;
251 p_vout = input_GetVout( p_input );
254 #warning FIXME: do not override the permanent configuration!
255 #warning FIXME: transform-type does not exist anymore
256 config_PutPsz( p_vout, "transform-type", psz_type );
257 var_SetString( p_vout, "video-filter", psz_filter );
258 vlc_object_release( p_vout );
260 vlc_object_release( p_input );
265 vlc_restorecancel( canc );
270 #undef HIGH_THRESHOLD
272 /*****************************************************************************
273 * GetOrientation: get laptop orientation, range -1800 / +1800
274 *****************************************************************************/
275 static int GetOrientation( intf_thread_t *p_intf )
278 int i_x = 0, i_y = 0, i_z = 0;
281 switch( p_intf->p_sys->sensor )
284 f = fopen( "/sys/devices/platform/hdaps/position", "r" );
290 i_ret = fscanf( f, "(%d,%d)", &i_x, &i_y );
296 return ( i_x - p_intf->p_sys->i_calibrate ) * 10;
299 f = fopen( "/sys/devices/ams/x", "r" );
305 i_ret = fscanf( f, "%d", &i_x);
311 return - i_x * 30; /* FIXME: arbitrary */
313 case APPLESMC_SENSOR:
314 f = fopen( "/sys/devices/applesmc.768/position", "r" );
320 i_ret = fscanf( f, "(%d,%d,%d)", &i_x, &i_y, &i_z );
326 return ( i_x - p_intf->p_sys->i_calibrate ) * 10;
328 #ifdef HAVE_MACOS_UNIMOTION
329 case UNIMOTION_SENSOR:
330 if( read_sms_raw( p_intf->p_sys->unimotion_hw, &i_x, &i_y, &i_z ) )
332 double d_norm = sqrt( i_x*i_x+i_z*i_z );
335 double d_x = i_x / d_norm;
337 return -asin(d_x)*3600/3.141;
339 return 3600 + asin(d_x)*3600/3.141;