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349 lines
10 KiB
349 lines
10 KiB
/*****************************************************************************
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* motion.c: control VLC with laptop built-in motion sensors
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*****************************************************************************
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* Copyright (C) 2006 - 2007 the VideoLAN team
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* $Id$
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*
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* Author: Sam Hocevar <sam@zoy.org>
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* Jérôme Decoodt <djc@videolan.org> (unimotion integration)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <math.h>
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_interface.h>
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#include <vlc_playlist.h>
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#include <vlc_vout.h>
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#ifdef __APPLE__
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# include "TargetConditionals.h"
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# if !TARGET_OS_IPHONE
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# define HAVE_MACOS_UNIMOTION
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# endif
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#endif
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#ifdef HAVE_MACOS_UNIMOTION
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# include "unimotion.h"
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#endif
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/*****************************************************************************
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* intf_sys_t: description and status of interface
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*****************************************************************************/
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struct intf_sys_t
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{
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enum { NO_SENSOR, HDAPS_SENSOR, AMS_SENSOR, APPLESMC_SENSOR,
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UNIMOTION_SENSOR } sensor;
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#ifdef HAVE_MACOS_UNIMOTION
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enum sms_hardware unimotion_hw;
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#endif
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int i_calibrate;
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bool b_use_rotate;
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};
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/*****************************************************************************
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* Local prototypes.
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*****************************************************************************/
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static int Open ( vlc_object_t * );
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static void Close ( vlc_object_t * );
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static void RunIntf( intf_thread_t *p_intf );
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static int GetOrientation( intf_thread_t *p_intf );
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#define USE_ROTATE_TEXT N_("Use the rotate video filter instead of transform")
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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vlc_module_begin ()
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set_shortname( N_("motion"))
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set_category( CAT_INTERFACE )
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set_subcategory( SUBCAT_INTERFACE_CONTROL )
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set_description( N_("motion control interface") )
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set_help( N_("Use HDAPS, AMS, APPLESMC or UNIMOTION motion sensors " \
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"to rotate the video") )
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add_bool( "motion-use-rotate", false,
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USE_ROTATE_TEXT, USE_ROTATE_TEXT, false )
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set_capability( "interface", 0 )
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set_callbacks( Open, Close )
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vlc_module_end ()
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/*****************************************************************************
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* OpenIntf: initialise interface
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*****************************************************************************/
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int Open ( vlc_object_t *p_this )
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{
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intf_thread_t *p_intf = (intf_thread_t *)p_this;
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FILE *f;
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int i_x = 0, i_y = 0;
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p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
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if( p_intf->p_sys == NULL )
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{
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return VLC_ENOMEM;
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}
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if( access( "/sys/devices/platform/hdaps/position", R_OK ) == 0 )
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{
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/* IBM HDAPS support */
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f = fopen( "/sys/devices/platform/hdaps/calibrate", "r" );
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if( f )
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{
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p_intf->p_sys->i_calibrate = fscanf( f, "(%d,%d)", &i_x, &i_y ) == 2 ? i_x: 0;
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fclose( f );
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p_intf->p_sys->sensor = HDAPS_SENSOR;
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}
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else
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{
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p_intf->p_sys->sensor = NO_SENSOR;
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}
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}
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else if( access( "/sys/devices/ams/x", R_OK ) == 0 )
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{
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/* Apple Motion Sensor support */
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p_intf->p_sys->sensor = AMS_SENSOR;
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}
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else if( access( "/sys/devices/applesmc.768/position", R_OK ) == 0 )
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{
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/* Apple SMC (newer macbooks) */
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/* Should be factorised with HDAPS */
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f = fopen( "/sys/devices/applesmc.768/calibrate", "r" );
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if( f )
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{
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p_intf->p_sys->i_calibrate = fscanf( f, "(%d,%d)", &i_x, &i_y ) == 2 ? i_x: 0;
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fclose( f );
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p_intf->p_sys->sensor = APPLESMC_SENSOR;
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}
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else
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{
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p_intf->p_sys->sensor = NO_SENSOR;
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}
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}
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#ifdef HAVE_MACOS_UNIMOTION
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else if( (p_intf->p_sys->unimotion_hw = detect_sms()) )
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p_intf->p_sys->sensor = UNIMOTION_SENSOR;
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#endif
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else
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{
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/* No motion sensor support */
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p_intf->p_sys->sensor = NO_SENSOR;
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}
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p_intf->pf_run = RunIntf;
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p_intf->p_sys->b_use_rotate = var_InheritBool( p_intf, "motion-use-rotate" );
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msg_Dbg( p_intf, "Motion detection correctly loaded" );
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* CloseIntf: destroy interface
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*****************************************************************************/
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void Close ( vlc_object_t *p_this )
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{
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intf_thread_t *p_intf = (intf_thread_t *)p_this;
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free( p_intf->p_sys );
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}
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/*****************************************************************************
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* RunIntf: main loop
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*****************************************************************************/
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#define FILTER_LENGTH 16
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#define LOW_THRESHOLD 800
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#define HIGH_THRESHOLD 1000
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static void RunIntf( intf_thread_t *p_intf )
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{
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int i_x, i_oldx = 0, i_sum = 0, i = 0;
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int p_oldx[FILTER_LENGTH];
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memset( p_oldx, 0, FILTER_LENGTH * sizeof( int ) );
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for( ;; )
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{
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const char *psz_filter, *psz_type;
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bool b_change = false;
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/* Wait a bit, get orientation, change filter if necessary */
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#warning FIXME: check once (or less) per picture, not once per interval
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msleep( INTF_IDLE_SLEEP );
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int canc = vlc_savecancel();
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i_x = GetOrientation( p_intf );
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i_sum += i_x - p_oldx[i];
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p_oldx[i++] = i_x;
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if( i == FILTER_LENGTH ) i = 0;
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i_x = i_sum / FILTER_LENGTH;
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if( p_intf->p_sys->b_use_rotate )
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{
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if( i_oldx != i_x )
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{
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/* TODO: cache object pointer */
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vlc_object_t *p_obj =
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vlc_object_find_name( p_intf->p_libvlc, "rotate", FIND_CHILD );
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if( p_obj )
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{
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var_SetInteger( p_obj, "rotate-deciangle",
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((3600+i_x/2)%3600) );
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i_oldx = i_x;
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vlc_object_release( p_obj );
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}
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}
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goto loop;
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}
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if( i_x < -HIGH_THRESHOLD && i_oldx > -LOW_THRESHOLD )
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{
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b_change = true;
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psz_filter = "transform";
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psz_type = "270";
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}
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else if( ( i_x > -LOW_THRESHOLD && i_oldx < -HIGH_THRESHOLD )
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|| ( i_x < LOW_THRESHOLD && i_oldx > HIGH_THRESHOLD ) )
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{
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b_change = true;
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psz_filter = "";
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psz_type = "";
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}
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else if( i_x > HIGH_THRESHOLD && i_oldx < LOW_THRESHOLD )
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{
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b_change = true;
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psz_filter = "transform";
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psz_type = "90";
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}
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if( b_change )
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{
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#warning FIXME: refactor this plugin as a video filter!
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input_thread_t *p_input;
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p_input = playlist_CurrentInput( pl_Get( p_intf ) );
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if( p_input )
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{
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vout_thread_t *p_vout;
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p_vout = input_GetVout( p_input );
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if( p_vout )
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{
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#warning FIXME: do not override the permanent configuration!
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#warning FIXME: transform-type does not exist anymore
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config_PutPsz( p_vout, "transform-type", psz_type );
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var_SetString( p_vout, "video-filter", psz_filter );
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vlc_object_release( p_vout );
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}
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vlc_object_release( p_input );
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i_oldx = i_x;
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}
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}
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loop:
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vlc_restorecancel( canc );
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}
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}
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#undef FILTER_LENGTH
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#undef LOW_THRESHOLD
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#undef HIGH_THRESHOLD
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/*****************************************************************************
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* GetOrientation: get laptop orientation, range -1800 / +1800
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*****************************************************************************/
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static int GetOrientation( intf_thread_t *p_intf )
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{
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FILE *f;
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int i_x = 0, i_y = 0, i_z = 0;
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int i_ret;
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switch( p_intf->p_sys->sensor )
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{
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case HDAPS_SENSOR:
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f = fopen( "/sys/devices/platform/hdaps/position", "r" );
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if( !f )
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{
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return 0;
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}
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i_ret = fscanf( f, "(%d,%d)", &i_x, &i_y );
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fclose( f );
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if( i_ret < 2 )
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return 0;
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else
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return ( i_x - p_intf->p_sys->i_calibrate ) * 10;
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case AMS_SENSOR:
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f = fopen( "/sys/devices/ams/x", "r" );
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if( !f )
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{
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return 0;
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}
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i_ret = fscanf( f, "%d", &i_x);
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fclose( f );
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if( i_ret < 1 )
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return 0;
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else
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return - i_x * 30; /* FIXME: arbitrary */
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case APPLESMC_SENSOR:
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f = fopen( "/sys/devices/applesmc.768/position", "r" );
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if( !f )
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{
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return 0;
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}
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i_ret = fscanf( f, "(%d,%d,%d)", &i_x, &i_y, &i_z );
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fclose( f );
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if( i_ret < 3 )
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return 0;
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else
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return ( i_x - p_intf->p_sys->i_calibrate ) * 10;
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#ifdef HAVE_MACOS_UNIMOTION
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case UNIMOTION_SENSOR:
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if( read_sms_raw( p_intf->p_sys->unimotion_hw, &i_x, &i_y, &i_z ) )
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{
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double d_norm = sqrt( i_x*i_x+i_z*i_z );
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if( d_norm < 100 )
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return 0;
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double d_x = i_x / d_norm;
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if( i_z > 0 )
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return -asin(d_x)*3600/3.141;
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else
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return 3600 + asin(d_x)*3600/3.141;
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}
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else
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return 0;
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#endif
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case NO_SENSOR:
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default:
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return 0;
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}
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}
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