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/*****************************************************************************
* motion.c: control VLC with laptop built-in motion sensors
*****************************************************************************
* Copyright (C) 2006 - 2007 the VideoLAN team
* $Id$
*
* Author: Sam Hocevar <sam@zoy.org>
* Jérôme Decoodt <djc@videolan.org> (unimotion integration)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>
#include <unistd.h>
#define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_interface.h>
#include <vlc_playlist.h>
#include <vlc_input.h>
#include <vlc_vout.h>
#include "motionlib.h"
/*****************************************************************************
* intf_sys_t: description and status of interface
*****************************************************************************/
struct intf_sys_t
{
motion_sensors_t *p_motion;
vlc_thread_t thread;
};
/*****************************************************************************
* Local prototypes.
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
static void *RunIntf( void * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin ()
set_shortname( N_("motion"))
set_category( CAT_INTERFACE )
set_subcategory( SUBCAT_INTERFACE_CONTROL )
set_description( N_("motion control interface") )
set_help( N_("Use HDAPS, AMS, APPLESMC or UNIMOTION motion sensors " \
"to rotate the video") )
add_obsolete_bool( "motion-use-rotate" ) /* since 2.1.0 */
set_capability( "interface", 0 )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* OpenIntf: initialise interface
*****************************************************************************/
static int Open ( vlc_object_t *p_this )
{
intf_thread_t *p_intf = (intf_thread_t *)p_this;
intf_sys_t *p_sys = malloc( sizeof( *p_sys ) );
if( unlikely(p_sys == NULL) )
return VLC_ENOMEM;
p_sys->p_motion = motion_create( VLC_OBJECT( p_intf ) );
if( p_sys->p_motion == NULL )
{
error:
free( p_sys );
return VLC_EGENERIC;
}
p_intf->p_sys = p_sys;
if( vlc_clone( &p_sys->thread, RunIntf, p_intf, VLC_THREAD_PRIORITY_LOW ) )
{
motion_destroy( p_sys->p_motion );
goto error;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* CloseIntf: destroy interface
*****************************************************************************/
static void Close ( vlc_object_t *p_this )
{
intf_thread_t *p_intf = (intf_thread_t *)p_this;
intf_sys_t *p_sys = p_intf->p_sys;
vlc_cancel( p_sys->thread );
vlc_join( p_sys->thread, NULL );
motion_destroy( p_sys->p_motion );
free( p_sys );
}
/*****************************************************************************
* RunIntf: main loop
*****************************************************************************/
#define LOW_THRESHOLD 800
#define HIGH_THRESHOLD 1000
static void *RunIntf( void *data )
{
intf_thread_t *p_intf = data;
int i_oldx = 0;
for( ;; )
{
const char *psz_type;
bool b_change = false;
/* Wait a bit, get orientation, change filter if necessary */
#warning FIXME: check once (or less) per picture, not once per interval
msleep( INTF_IDLE_SLEEP );
int canc = vlc_savecancel();
int i_x = motion_get_angle( p_intf->p_sys->p_motion );
if( i_x < -HIGH_THRESHOLD && i_oldx > -LOW_THRESHOLD )
{
b_change = true;
psz_type = "90";
}
else if( ( i_x > -LOW_THRESHOLD && i_oldx < -HIGH_THRESHOLD )
|| ( i_x < LOW_THRESHOLD && i_oldx > HIGH_THRESHOLD ) )
{
b_change = true;
psz_type = NULL;
}
else if( i_x > HIGH_THRESHOLD && i_oldx < LOW_THRESHOLD )
{
b_change = true;
psz_type = "270";
}
if( b_change )
{
#warning FIXME: refactor this plugin as a video filter!
input_thread_t *p_input = pl_CurrentInput( p_intf );
if( p_input )
{
vout_thread_t *p_vout;
p_vout = input_GetVout( p_input );
if( p_vout )
{
if( psz_type != NULL )
{
var_Create( p_vout, "transform-type", VLC_VAR_STRING );
var_SetString( p_vout, "transform-type", psz_type );
}
else
var_Destroy( p_vout, "transform-type" );
var_SetString( p_vout, "video-filter",
psz_type != NULL ? "transform" : "" );
vlc_object_release( p_vout );
}
vlc_object_release( p_input );
i_oldx = i_x;
}
}
vlc_restorecancel( canc );
}
vlc_assert_unreachable();
}
#undef LOW_THRESHOLD
#undef HIGH_THRESHOLD
|
