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522 lines
17 KiB
522 lines
17 KiB
/*****************************************************************************
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* gestures.c: control vlc with mouse gestures
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*****************************************************************************
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* Copyright (C) 2004-2009 the VideoLAN team
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* $Id$
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*
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* Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
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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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#define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
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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_vout.h>
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#include <vlc_playlist.h>
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#include <vlc_input.h>
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#include <assert.h>
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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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vlc_mutex_t lock;
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input_thread_t *p_input;
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vout_thread_t *p_vout;
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bool b_button_pressed;
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int i_last_x, i_last_y;
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unsigned int i_pattern;
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unsigned int i_num_gestures;
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int i_threshold;
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int i_button_mask;
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};
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/*****************************************************************************
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* Local prototypes.
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*****************************************************************************/
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#define UP 1
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#define DOWN 2
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#define LEFT 3
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#define RIGHT 4
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#define NONE 0
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#define GESTURE( a, b, c, d ) (a | ( b << 4 ) | ( c << 8 ) | ( d << 12 ))
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static int Open ( vlc_object_t * );
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static void Close ( vlc_object_t * );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define THRESHOLD_TEXT N_( "Motion threshold (10-100)" )
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#define THRESHOLD_LONGTEXT N_( \
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"Amount of movement required for a mouse gesture to be recorded." )
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#define BUTTON_TEXT N_( "Trigger button" )
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#define BUTTON_LONGTEXT N_( \
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"Trigger button for mouse gestures." )
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#define BUTTON_DEFAULT "left"
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static const char *const button_list[] = { "left", "middle", "right" };
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static const char *const button_list_text[] =
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{ N_("Left"), N_("Middle"), N_("Right") };
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vlc_module_begin ()
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set_shortname( N_("Gestures"))
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set_category( CAT_INTERFACE )
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set_subcategory( SUBCAT_INTERFACE_CONTROL )
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add_integer( "gestures-threshold", 30,
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THRESHOLD_TEXT, THRESHOLD_LONGTEXT, true )
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add_string( "gestures-button", BUTTON_DEFAULT,
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BUTTON_TEXT, BUTTON_LONGTEXT, false )
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change_string_list( button_list, button_list_text )
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set_description( N_("Mouse gestures control interface") )
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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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static int PlaylistEvent( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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static int InputEvent( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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static int MovedEvent( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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static int ButtonEvent( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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/*****************************************************************************
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* OpenIntf: initialize interface
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*****************************************************************************/
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static 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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/* Allocate instance and initialize some members */
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intf_sys_t *p_sys = p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
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if( unlikely(p_sys == NULL) )
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return VLC_ENOMEM;
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// Configure the module
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vlc_mutex_init( &p_sys->lock );
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p_sys->p_input = NULL;
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p_sys->p_vout = NULL;
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p_sys->b_button_pressed = false;
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p_sys->i_threshold = var_InheritInteger( p_intf, "gestures-threshold" );
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// Choose the tight button to use
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char *psz_button = var_InheritString( p_intf, "gestures-button" );
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if( psz_button && !strcmp( psz_button, "left" ) )
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p_sys->i_button_mask = 1;
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else if( psz_button && !strcmp( psz_button, "middle" ) )
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p_sys->i_button_mask = 2;
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else // psz_button == "right"
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p_sys->i_button_mask = 4;
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free( psz_button );
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p_sys->i_pattern = 0;
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p_sys->i_num_gestures = 0;
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var_AddCallback( pl_Get(p_intf), "input-current", PlaylistEvent, p_intf );
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* gesture: return a subpattern within a pattern
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*****************************************************************************/
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static inline unsigned gesture( unsigned i_pattern, unsigned i_num )
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{
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return ( i_pattern >> ( i_num * 4 ) ) & 0xF;
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}
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/*****************************************************************************
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* CloseIntf: destroy dummy interface
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*****************************************************************************/
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static 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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intf_sys_t *p_sys = p_intf->p_sys;
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/* Destroy the callbacks (the order matters!) */
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var_DelCallback( pl_Get(p_intf), "input-current", PlaylistEvent, p_intf );
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if( p_sys->p_input != NULL )
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var_DelCallback( p_sys->p_input, "intf-event", InputEvent, p_intf );
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if( p_sys->p_vout )
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{
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var_DelCallback( p_sys->p_vout, "mouse-moved", MovedEvent, p_intf );
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var_DelCallback( p_sys->p_vout, "mouse-button-down",
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ButtonEvent, p_intf );
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vlc_object_release( p_sys->p_vout );
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}
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/* Destroy structure */
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vlc_mutex_destroy( &p_sys->lock );
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free( p_sys );
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}
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static void ProcessGesture( intf_thread_t *p_intf )
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{
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intf_sys_t *p_sys = p_intf->p_sys;
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playlist_t *p_playlist = pl_Get( p_intf );
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/* Do something */
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/* If you modify this, please try to follow this convention:
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Start with LEFT, RIGHT for playback related commands
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and UP, DOWN, for other commands */
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switch( p_sys->i_pattern )
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{
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case LEFT:
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{
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msg_Dbg( p_intf, "Go backward in the movie!" );
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input_thread_t *p_input = playlist_CurrentInput( p_playlist );
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if( p_input == NULL )
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break;
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int it = var_InheritInteger( p_intf , "short-jump-size" );
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if( it > 0 )
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var_SetInteger( p_input, "time-offset", -CLOCK_FREQ * it );
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vlc_object_release( p_input );
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break;
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}
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case RIGHT:
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{
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msg_Dbg( p_intf, "Go forward in the movie!" );
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input_thread_t *p_input = playlist_CurrentInput( p_playlist );
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if( p_input == NULL )
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break;
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int it = var_InheritInteger( p_intf , "short-jump-size" );
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if( it > 0 )
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var_SetInteger( p_input, "time-offset", CLOCK_FREQ * it );
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vlc_object_release( p_input );
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break;
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}
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case GESTURE(LEFT,UP,NONE,NONE):
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msg_Dbg( p_intf, "Going slower." );
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var_TriggerCallback( p_playlist, "rate-slower" );
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break;
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case GESTURE(RIGHT,UP,NONE,NONE):
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msg_Dbg( p_intf, "Going faster." );
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var_TriggerCallback( p_playlist, "rate-faster" );
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break;
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case GESTURE(LEFT,RIGHT,NONE,NONE):
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case GESTURE(RIGHT,LEFT,NONE,NONE):
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{
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msg_Dbg( p_intf, "Play/Pause" );
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input_thread_t *p_input = playlist_CurrentInput( p_playlist );
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if( p_input == NULL )
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break;
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int i_state = var_GetInteger( p_input, "state" );
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i_state = (i_state == PLAYING_S) ? PAUSE_S : PLAYING_S;
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var_SetInteger( p_input, "state", i_state );
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vlc_object_release( p_input );
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break;
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}
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case GESTURE(LEFT,DOWN,NONE,NONE):
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playlist_Prev( p_playlist );
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break;
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case GESTURE(RIGHT,DOWN,NONE,NONE):
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playlist_Next( p_playlist );
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break;
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case UP:
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msg_Dbg(p_intf, "Louder");
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playlist_VolumeUp( p_playlist, 1, NULL );
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break;
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case DOWN:
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msg_Dbg(p_intf, "Quieter");
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playlist_VolumeDown( p_playlist, 1, NULL );
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break;
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case GESTURE(UP,DOWN,NONE,NONE):
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case GESTURE(DOWN,UP,NONE,NONE):
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msg_Dbg( p_intf, "Mute sound" );
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playlist_MuteToggle( p_playlist );
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break;
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case GESTURE(UP,RIGHT,NONE,NONE):
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{
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input_thread_t *p_input = playlist_CurrentInput( p_playlist );
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if( p_input == NULL )
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break;
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vlc_value_t list, list2;
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var_Change( p_input, "audio-es", VLC_VAR_GETCHOICES,
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&list, &list2 );
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if( list.p_list->i_count > 1 )
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{
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int i_audio_es = var_GetInteger( p_input, "audio-es" );
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int i;
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for( i = 0; i < list.p_list->i_count; i++ )
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if( i_audio_es == list.p_list->p_values[i].i_int )
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break;
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/* value of audio-es was not in choices list */
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if( i == list.p_list->i_count )
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{
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msg_Warn( p_input,
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"invalid current audio track, selecting 0" );
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i = 0;
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}
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else if( i == list.p_list->i_count - 1 )
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i = 1;
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else
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i++;
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var_SetInteger( p_input, "audio-es",
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list.p_list->p_values[i].i_int );
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}
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var_FreeList( &list, &list2 );
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vlc_object_release( p_input );
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break;
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}
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case GESTURE(DOWN,RIGHT,NONE,NONE):
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{
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input_thread_t *p_input = playlist_CurrentInput( p_playlist );
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if( p_input == NULL )
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break;
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vlc_value_t list, list2;
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var_Change( p_input, "spu-es", VLC_VAR_GETCHOICES,
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&list, &list2 );
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if( list.p_list->i_count > 1 )
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{
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int i_audio_es = var_GetInteger( p_input, "spu-es" );
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int i;
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for( i = 0; i < list.p_list->i_count; i++ )
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if( i_audio_es == list.p_list->p_values[i].i_int )
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break;
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/* value of audio-es was not in choices list */
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if( i == list.p_list->i_count )
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{
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msg_Warn( p_input,
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"invalid current subtitle track, selecting 0" );
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i = 0;
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}
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else if( i == list.p_list->i_count - 1 )
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i = 1;
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else
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i++;
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var_SetInteger( p_input, "audio-es",
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list.p_list->p_values[i].i_int );
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}
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var_FreeList( &list, &list2 );
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vlc_object_release( p_input );
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break;
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}
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case GESTURE(UP,LEFT,NONE,NONE):
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{
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bool val = var_ToggleBool( pl_Get( p_intf ), "fullscreen" );
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if( p_sys->p_vout )
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var_SetBool( p_sys->p_vout, "fullscreen", val );
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break;
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}
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case GESTURE(DOWN,LEFT,NONE,NONE):
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/* FIXME: Should close the vout!"*/
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libvlc_Quit( p_intf->obj.libvlc );
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break;
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case GESTURE(DOWN,LEFT,UP,RIGHT):
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case GESTURE(UP,RIGHT,DOWN,LEFT):
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msg_Dbg( p_intf, "a square was drawn!" );
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break;
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}
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p_sys->i_num_gestures = 0;
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p_sys->i_pattern = 0;
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}
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static int MovedEvent( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t newval, void *p_data )
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{
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intf_thread_t *p_intf = (intf_thread_t *)p_data;
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intf_sys_t *p_sys = p_intf->p_sys;
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(void) p_this; (void) psz_var; (void) oldval;
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vlc_mutex_lock( &p_sys->lock );
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if( p_sys->b_button_pressed )
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{
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int i_horizontal = newval.coords.x - p_sys->i_last_x;
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int i_vertical = newval.coords.y - p_sys->i_last_y;
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unsigned int pattern = 0;
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i_horizontal /= p_sys->i_threshold;
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i_vertical /= p_sys->i_threshold;
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if( i_horizontal < 0 )
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{
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msg_Dbg( p_intf, "left gesture (%d)", i_horizontal );
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pattern = LEFT;
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}
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else if( i_horizontal > 0 )
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{
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msg_Dbg( p_intf, "right gesture (%d)", i_horizontal );
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pattern = RIGHT;
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}
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if( i_vertical < 0 )
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{
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msg_Dbg( p_intf, "up gesture (%d)", i_vertical );
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pattern = UP;
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}
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else if( i_vertical > 0 )
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{
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msg_Dbg( p_intf, "down gesture (%d)", i_vertical );
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pattern = DOWN;
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}
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if( pattern )
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{
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p_sys->i_last_x = newval.coords.x;
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p_sys->i_last_y = newval.coords.y;
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if( p_sys->i_num_gestures > 0
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&& gesture( p_sys->i_pattern, p_sys->i_num_gestures - 1 )
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!= pattern )
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{
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p_sys->i_pattern |= pattern << ( p_sys->i_num_gestures * 4 );
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p_sys->i_num_gestures++;
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}
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else if( p_sys->i_num_gestures == 0 )
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{
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p_sys->i_pattern = pattern;
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p_sys->i_num_gestures++;
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}
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}
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}
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vlc_mutex_unlock( &p_sys->lock );
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return VLC_SUCCESS;
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}
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static int ButtonEvent( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t val, void *p_data )
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{
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intf_thread_t *p_intf = p_data;
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intf_sys_t *p_sys = p_intf->p_sys;
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(void) psz_var; (void) oldval;
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vlc_mutex_lock( &p_sys->lock );
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if( val.i_int & p_sys->i_button_mask )
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{
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if( !p_sys->b_button_pressed )
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{
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p_sys->b_button_pressed = true;
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var_GetCoords( p_this, "mouse-moved",
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&p_sys->i_last_x, &p_sys->i_last_y );
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}
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}
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else
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{
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if( p_sys->b_button_pressed )
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{
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p_sys->b_button_pressed = false;
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ProcessGesture( p_intf );
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}
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}
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vlc_mutex_unlock( &p_sys->lock );
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return VLC_SUCCESS;
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}
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static int InputEvent( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t val, void *p_data )
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{
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input_thread_t *p_input = (input_thread_t *)p_this;
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intf_thread_t *p_intf = p_data;
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intf_sys_t *p_sys = p_intf->p_sys;
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(void) psz_var; (void) oldval;
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switch( val.i_int )
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{
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case INPUT_EVENT_VOUT:
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/* intf-event is serialized against itself and is the sole user of
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* p_sys->p_vout. So there is no need to acquire the lock currently. */
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if( p_sys->p_vout != NULL )
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{ /* /!\ Beware of lock inversion with var_DelCallback() /!\ */
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var_DelCallback( p_sys->p_vout, "mouse-moved", MovedEvent,
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p_intf );
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var_DelCallback( p_sys->p_vout, "mouse-button-down", ButtonEvent,
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p_intf );
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vlc_object_release( p_sys->p_vout );
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}
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p_sys->p_vout = input_GetVout( p_input );
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if( p_sys->p_vout != NULL )
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{
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var_AddCallback( p_sys->p_vout, "mouse-moved", MovedEvent,
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p_intf );
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var_AddCallback( p_sys->p_vout, "mouse-button-down", ButtonEvent,
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p_intf );
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}
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break;
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}
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
static int PlaylistEvent( vlc_object_t *p_this, char const *psz_var,
|
|
vlc_value_t oldval, vlc_value_t val, void *p_data )
|
|
{
|
|
intf_thread_t *p_intf = p_data;
|
|
intf_sys_t *p_sys = p_intf->p_sys;
|
|
input_thread_t *p_input = val.p_address;
|
|
|
|
(void) p_this; (void) psz_var;
|
|
|
|
if( p_sys->p_input != NULL )
|
|
{
|
|
assert( p_sys->p_input == oldval.p_address );
|
|
var_DelCallback( p_sys->p_input, "intf-event", InputEvent, p_intf );
|
|
}
|
|
|
|
p_sys->p_input = p_input;
|
|
|
|
if( p_input != NULL )
|
|
var_AddCallback( p_input, "intf-event", InputEvent, p_intf );
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
|