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526 lines
18 KiB
526 lines
18 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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#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_aout.h>
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#include <vlc_playlist.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.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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vlc_mutex_t lock;
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vout_thread_t *p_vout;
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bool b_got_gesture;
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bool b_button_pressed;
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int i_mouse_x, i_mouse_y;
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int i_last_x, i_last_y;
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unsigned int i_pattern;
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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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int Open ( vlc_object_t * );
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void Close ( vlc_object_t * );
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static int MouseEvent ( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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/* Exported functions */
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static void RunIntf ( intf_thread_t *p_intf );
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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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#if defined (HAVE_MAEMO)
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# define BUTTON_DEFAULT "left"
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#else
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# define BUTTON_DEFAULT "right"
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#endif
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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, NULL,
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THRESHOLD_TEXT, THRESHOLD_LONGTEXT, true )
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add_string( "gestures-button", BUTTON_DEFAULT, NULL,
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BUTTON_TEXT, BUTTON_LONGTEXT, false )
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change_string_list( button_list, button_list_text, 0 )
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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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/*****************************************************************************
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* OpenIntf: initialize 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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/* 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( p_intf->p_sys == NULL )
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return VLC_ENOMEM;
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// Configure the module
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p_intf->pf_run = RunIntf;
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vlc_mutex_init( &p_sys->lock );
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p_sys->p_vout = NULL;
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p_sys->b_got_gesture = false;
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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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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 int gesture( int i_pattern, int 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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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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// Destroy the callbacks
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if( p_intf->p_sys->p_vout )
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{
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var_DelCallback( p_intf->p_sys->p_vout, "mouse-moved",
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MouseEvent, p_intf );
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var_DelCallback( p_intf->p_sys->p_vout, "mouse-button-down",
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MouseEvent, p_intf );
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vlc_object_release( p_intf->p_sys->p_vout );
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}
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/* Destroy structure */
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vlc_mutex_destroy( &p_intf->p_sys->lock );
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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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static void RunIntf( 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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int canc = vlc_savecancel();
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input_thread_t *p_input;
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/* Main loop */
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while( vlc_object_alive( p_intf ) )
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{
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vlc_mutex_lock( &p_sys->lock );
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/*
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* mouse cursor
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*/
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if( p_sys->b_got_gesture )
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{
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int i_interval = 0;
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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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playlist_t * p_playlist = pl_Get( p_intf );
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switch( p_sys->i_pattern )
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{
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case LEFT:
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msg_Dbg( p_intf, "Go backward in the movie!" );
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p_input = playlist_CurrentInput( p_playlist );
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if( p_input )
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{
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i_interval = var_InheritInteger( p_intf , "short-jump-size" );
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if ( i_interval > 0 )
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{
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mtime_t i_time = ( (mtime_t)( -i_interval ) * 1000000L);
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var_SetTime( p_input, "time-offset", i_time );
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}
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vlc_object_release( p_input );
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}
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break;
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case RIGHT:
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msg_Dbg( p_intf, "Go forward in the movie!" );
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p_input = playlist_CurrentInput( p_playlist );
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if( p_input )
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{
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i_interval = var_InheritInteger( p_intf , "short-jump-size" );
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if ( i_interval > 0 )
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{
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mtime_t i_time = ( (mtime_t)( i_interval ) * 1000000L);
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var_SetTime( p_input, "time-offset", i_time );
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}
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vlc_object_release( p_input );
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}
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break;
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case GESTURE(LEFT,UP,NONE,NONE):
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msg_Dbg( p_intf, "Going slower." );
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p_input = playlist_CurrentInput( p_playlist );
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if( p_input )
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{
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var_TriggerCallback( p_input, "rate-slower" );
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vlc_object_release( p_input );
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}
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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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p_input = playlist_CurrentInput( p_playlist );
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if( p_input )
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{
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var_TriggerCallback( p_input, "rate-faster" );
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vlc_object_release( p_input );
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}
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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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msg_Dbg( p_intf, "Play/Pause" );
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p_input = playlist_CurrentInput( p_playlist );
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if( p_input )
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{
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int i_state = var_GetInteger( p_input, "state" );
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var_SetInteger( p_input, "state", ( i_state != PLAYING_S )
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? PLAYING_S : PAUSE_S );
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vlc_object_release( p_input );
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}
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break;
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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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aout_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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aout_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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aout_ToggleMute( p_playlist, NULL );
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break;
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case GESTURE(UP,RIGHT,NONE,NONE):
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{
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vlc_value_t list, list2;
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int i_count, i, i_audio_es;
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p_input = playlist_CurrentInput( p_playlist );
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if( !p_input )
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break;
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i_audio_es = var_GetInteger( p_input, "audio-es" );
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var_Change( p_input, "audio-es", VLC_VAR_GETCHOICES,
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&list, &list2 );
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i_count = list.p_list->i_count;
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if( i_count <= 1 )
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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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for( i = 0; i < i_count; i++ )
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{
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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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}
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/* value of audio-es was not in choices list */
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if( i == 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 == 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", list.p_list->p_values[i].i_int );
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var_FreeList( &list, &list2 );
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vlc_object_release( p_input );
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}
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break;
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case GESTURE(DOWN,RIGHT,NONE,NONE):
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{
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vlc_value_t list, list2;
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int i_count, i, i_spu_es;
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p_input = playlist_CurrentInput( p_playlist );
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if( !p_input )
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break;
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i_spu_es = var_GetInteger( p_input, "spu-es" );
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var_Change( p_input, "spu-es", VLC_VAR_GETCHOICES,
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&list, &list2 );
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i_count = list.p_list->i_count;
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if( i_count <= 1 )
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{
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vlc_object_release( p_input );
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var_FreeList( &list, &list2 );
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break;
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}
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for( i = 0; i < i_count; i++ )
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{
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if( i_spu_es == list.p_list->p_values[i].i_int )
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{
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break;
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}
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}
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/* value of spu-es was not in choices list */
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if( i == 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 == i_count - 1 )
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i = 0;
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else
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i++;
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var_SetInteger( p_input, "spu-es", list.p_list->p_values[i].i_int);
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var_FreeList( &list, &list2 );
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vlc_object_release( p_input );
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}
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break;
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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->p_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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default:
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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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p_sys->b_got_gesture = false;
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}
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/*
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* video output
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*/
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if( p_sys->p_vout && !vlc_object_alive( p_sys->p_vout ) )
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{
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var_DelCallback( p_sys->p_vout, "mouse-moved",
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MouseEvent, p_intf );
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var_DelCallback( p_sys->p_vout, "mouse-button-down",
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MouseEvent, p_intf );
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vlc_object_release( p_sys->p_vout );
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p_sys->p_vout = NULL;
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}
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if( p_sys->p_vout == NULL )
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{
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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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p_sys->p_vout = input_GetVout( p_input );
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vlc_object_release( p_input );
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}
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if( p_sys->p_vout )
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{
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var_AddCallback( p_sys->p_vout, "mouse-moved",
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MouseEvent, p_intf );
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var_AddCallback( p_sys->p_vout, "mouse-button-down",
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MouseEvent, p_intf );
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}
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}
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vlc_mutex_unlock( &p_sys->lock );
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/* Wait a bit */
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msleep( INTF_IDLE_SLEEP );
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}
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vlc_restorecancel( canc );
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}
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/*****************************************************************************
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* MouseEvent: callback for mouse events
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*****************************************************************************/
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static int MouseEvent( 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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VLC_UNUSED(p_this); VLC_UNUSED(oldval);
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int pattern = 0;
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signed int i_horizontal, i_vertical;
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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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vlc_mutex_lock( &p_sys->lock );
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/* don't process new gestures before the last events are processed */
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if( p_sys->b_got_gesture )
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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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if( !strcmp( psz_var, "mouse-moved" ) && p_sys->b_button_pressed )
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{
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p_sys->i_mouse_x = newval.coords.x;
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p_sys->i_mouse_y = newval.coords.y;
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i_horizontal = p_sys->i_mouse_x - p_sys->i_last_x;
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i_horizontal = i_horizontal / p_sys->i_threshold;
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i_vertical = p_sys->i_mouse_y - p_sys->i_last_y;
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i_vertical = 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_y = p_sys->i_mouse_y;
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p_sys->i_last_x = p_sys->i_mouse_x;
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if( 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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}
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}
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else if( !strcmp( psz_var, "mouse-button-down" ) )
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{
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|
if( (newval.i_int & p_sys->i_button_mask) && !p_sys->b_button_pressed )
|
|
{
|
|
p_sys->b_button_pressed = true;
|
|
var_GetCoords( p_sys->p_vout, "mouse-moved",
|
|
&p_sys->i_last_x, &p_sys->i_last_y );
|
|
}
|
|
else if( !( newval.i_int & p_sys->i_button_mask ) && p_sys->b_button_pressed )
|
|
{
|
|
p_sys->b_button_pressed = false;
|
|
p_sys->b_got_gesture = true;
|
|
}
|
|
}
|
|
|
|
vlc_mutex_unlock( &p_sys->lock );
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
|