git.sesse.net Git - vlc/blob - modules/control/hotkeys.c

   1 /*****************************************************************************
   2  * hotkeys.c: Hotkey handling for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2003 VideoLAN
   5  * $Id: hotkeys.c,v 1.2 2003/10/29 01:33:27 gbazin Exp $
   6  *
   7  * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28 #include <string.h>
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/intf.h>
  32 #include <vlc/vout.h>
  33 #include <vlc/aout.h>
  34 #include <osd.h>
  35
  36 #include "vlc_keys.h"
  37
  38 #define BUFFER_SIZE 10
  39 /*****************************************************************************
  40  * intf_sys_t: description and status of FB interface
  41  *****************************************************************************/
  42 struct intf_sys_t
  43 {
  44     vlc_mutex_t         change_lock;  /* mutex to keep the callback
  45                                        * and the main loop from
  46                                        * stepping on each others
  47                                        * toes */
  48     int                 p_keys[ BUFFER_SIZE ]; /* buffer that contains
  49                                                 * keyevents */
  50     int                 i_size;        /* number of events in buffer */
  51     input_thread_t *    p_input;       /* pointer to input */
  52     vout_thread_t *     p_vout;        /* pointer to vout object */
  53 };
  54
  55 /*****************************************************************************
  56  * Local prototypes
  57  *****************************************************************************/
  58 static int  Open    ( vlc_object_t * );
  59 static void Close   ( vlc_object_t * );
  60 static void Run     ( intf_thread_t * );
  61 static void Feedback( intf_thread_t *, char * );
  62 static int  GetKey  ( intf_thread_t *);
  63 static int  KeyEvent( vlc_object_t *, char const *,
  64                       vlc_value_t, vlc_value_t, void * );
  65 static int  ActionKeyCB( vlc_object_t *, char const *,
  66                          vlc_value_t, vlc_value_t, void * );
  67
  68 /*****************************************************************************
  69  * Module descriptor
  70  *****************************************************************************/
  71 vlc_module_begin();
  72     set_description( _("hotkey interface") );
  73     set_capability( "interface", 0 );
  74     set_callbacks( Open, Close );
  75 vlc_module_end();
  76
  77 /*****************************************************************************
  78  * Open: initialize interface
  79  *****************************************************************************/
  80 static int Open( vlc_object_t *p_this )
  81 {
  82     intf_thread_t *p_intf = (intf_thread_t *)p_this;
  83
  84     /* Allocate instance and initialize some members */
  85     p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
  86     if( p_intf->p_sys == NULL )
  87     {
  88         msg_Err( p_intf, "out of memory" );
  89         return 1;
  90     }
  91     vlc_mutex_init( p_intf, &p_intf->p_sys->change_lock );
  92     p_intf->p_sys->i_size = 0;
  93     p_intf->pf_run = Run;
  94
  95     p_intf->p_sys->p_input = NULL;
  96     p_intf->p_sys->p_vout = NULL;
  97
  98     var_AddCallback( p_intf->p_vlc, "key-pressed", KeyEvent, p_intf );
  99     return 0;
 100 }
 101
 102 /*****************************************************************************
 103  * Close: destroy interface
 104  *****************************************************************************/
 105 static void Close( vlc_object_t *p_this )
 106 {
 107     intf_thread_t *p_intf = (intf_thread_t *)p_this;
 108
 109     if( p_intf->p_sys->p_input )
 110     {
 111         vlc_object_release( p_intf->p_sys->p_input );
 112     }
 113     if( p_intf->p_sys->p_vout )
 114     {
 115         vlc_object_release( p_intf->p_sys->p_vout );
 116     }
 117     /* Destroy structure */
 118     free( p_intf->p_sys );
 119 }
 120
 121 /*****************************************************************************
 122  * Run: main loop
 123  *****************************************************************************/
 124 static void Run( intf_thread_t *p_intf )
 125 {
 126     playlist_t *p_playlist;
 127     input_thread_t *p_input;
 128     vout_thread_t *p_vout = NULL;
 129     struct hotkey *p_hotkeys = p_intf->p_vlc->p_hotkeys;
 130     vlc_value_t val;
 131     int i;
 132
 133     /* Initialize hotkey structure */
 134     for( i = 0; p_hotkeys[i].psz_action != NULL; i++ )
 135     {
 136         var_Create( p_intf->p_vlc, p_hotkeys[i].psz_action,
 137                     VLC_VAR_HOTKEY | VLC_VAR_DOINHERIT );
 138
 139         var_AddCallback( p_intf->p_vlc, p_hotkeys[i].psz_action,
 140                          ActionKeyCB, NULL );
 141         var_Get( p_intf->p_vlc, p_hotkeys[i].psz_action, &val );
 142         var_Set( p_intf->p_vlc, p_hotkeys[i].psz_action, val );
 143     }
 144
 145     while( !p_intf->b_die )
 146     {
 147         int i_key, i_action;
 148
 149         /* Sleep a bit */
 150         msleep( INTF_IDLE_SLEEP );
 151
 152         /* Update the input */
 153         if( p_intf->p_sys->p_input == NULL )
 154         {
 155             p_intf->p_sys->p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT,
 156                                                       FIND_ANYWHERE );
 157         }
 158         else if( p_intf->p_sys->p_input->b_dead )
 159         {
 160             vlc_object_release( p_intf->p_sys->p_input );
 161             p_intf->p_sys->p_input = NULL;
 162         }
 163         p_input = p_intf->p_sys->p_input;
 164
 165         /* Update the vout */
 166         if( p_vout == NULL )
 167         {
 168             p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
 169                                       FIND_ANYWHERE );
 170             p_intf->p_sys->p_vout = p_vout;
 171         }
 172         else if( p_vout->b_die )
 173         {
 174             vlc_object_release( p_vout );
 175             p_vout = NULL;
 176             p_intf->p_sys->p_vout = NULL;
 177         }
 178
 179         /* Find action triggered by hotkey */
 180         i_action = 0;
 181         i_key = GetKey( p_intf );
 182         for( i = 0; p_hotkeys[i].psz_action != NULL; i++ )
 183         {
 184             if( p_hotkeys[i].i_key == i_key )
 185             {
 186                  i_action = p_hotkeys[i].i_action;
 187             }
 188         }
 189
 190         if( !i_action )
 191         {
 192             /* No key pressed, sleep a bit more */
 193             msleep( INTF_IDLE_SLEEP );
 194             continue;
 195         }
 196
 197         if( i_action == ACTIONID_QUIT )
 198         {
 199             p_intf->p_vlc->b_die = VLC_TRUE;
 200             Feedback( p_intf, _("Quit" ) );
 201             continue;
 202         }
 203         else if( i_action == ACTIONID_VOL_UP )
 204         {
 205             audio_volume_t i_newvol;
 206             char string[9];
 207             aout_VolumeUp( p_intf, 1, &i_newvol );
 208             sprintf( string, "Vol %%%d", i_newvol*100/AOUT_VOLUME_MAX );
 209             Feedback( p_intf, string );
 210         }
 211         else if( i_action == ACTIONID_VOL_DOWN )
 212         {
 213             audio_volume_t i_newvol;
 214             char string[9];
 215             aout_VolumeDown( p_intf, 1, &i_newvol );
 216             sprintf( string, "Vol %%%d", i_newvol*100/AOUT_VOLUME_MAX );
 217             Feedback( p_intf, string );
 218         }
 219         else if( i_action == ACTIONID_FULLSCREEN )
 220         {
 221             if( p_vout )
 222             {
 223                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 224             }
 225         }
 226         else if( i_action == ACTIONID_PLAY )
 227         {
 228             p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
 229                                           FIND_ANYWHERE );
 230             if( p_playlist )
 231             {
 232                 vlc_mutex_lock( &p_playlist->object_lock );
 233                 if( p_playlist->i_size )
 234                 {
 235                     vlc_mutex_unlock( &p_playlist->object_lock );
 236                     playlist_Play( p_playlist );
 237                     vlc_object_release( p_playlist );
 238                 }
 239             }
 240         }
 241         else if( i_action == ACTIONID_PLAY_PAUSE )
 242         {
 243             if( p_input &&
 244                 p_input->stream.control.i_status != PAUSE_S )
 245             {
 246                 Feedback( p_intf, _( "Pause" ) );
 247                 input_SetStatus( p_input, INPUT_STATUS_PAUSE );
 248             }
 249             else
 250             {
 251                 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
 252                                               FIND_ANYWHERE );
 253                 if( p_playlist )
 254                 {
 255                     vlc_mutex_lock( &p_playlist->object_lock );
 256                     if( p_playlist->i_size )
 257                     {
 258                         vlc_mutex_unlock( &p_playlist->object_lock );
 259                         Feedback( p_intf, _( "Play" ) );
 260                         playlist_Play( p_playlist );
 261                         vlc_object_release( p_playlist );
 262                     }
 263                 }
 264             }
 265         }
 266         else if( p_input )
 267         {
 268             if( i_action == ACTIONID_PAUSE )
 269             {
 270                 Feedback( p_intf, _( "Pause" ) );
 271                 input_SetStatus( p_input, INPUT_STATUS_PAUSE );
 272             }
 273             else if( i_action == ACTIONID_NEXT )
 274             {
 275                 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
 276                                               FIND_ANYWHERE );
 277                 if( p_playlist )
 278                 {
 279                     playlist_Next( p_playlist );
 280                     vlc_object_release( p_playlist );
 281                 }
 282             }
 283             else if( i_action == ACTIONID_PREV )
 284             {
 285                 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
 286                                               FIND_ANYWHERE );
 287                 if( p_playlist )
 288                 {
 289                     playlist_Prev( p_playlist );
 290                     vlc_object_release( p_playlist );
 291                 }
 292             }
 293             else if( i_action == ACTIONID_STOP )
 294             {
 295                 p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
 296                                               FIND_ANYWHERE );
 297                 if( p_playlist )
 298                 {
 299                     playlist_Stop( p_playlist );
 300                     vlc_object_release( p_playlist );
 301                 }
 302             }
 303             else if( i_action == ACTIONID_FASTER )
 304             {
 305                 input_SetStatus( p_input, INPUT_STATUS_FASTER );
 306             }
 307             else if( i_action == ACTIONID_FASTER )
 308             {
 309                 input_SetStatus( p_input, INPUT_STATUS_SLOWER );
 310             }
 311         }
 312
 313     }
 314 }
 315
 316 static void Feedback( intf_thread_t *p_intf, char *psz_string )
 317 {
 318     if ( p_intf->p_sys->p_vout )
 319     {
 320         vout_ShowTextRelative( p_intf->p_sys->p_vout, psz_string, NULL,
 321                                  OSD_ALIGN_TOP|OSD_ALIGN_RIGHT, 30,20,400000 );
 322     }
 323 }
 324
 325 static int GetKey( intf_thread_t *p_intf)
 326 {
 327     vlc_mutex_lock( &p_intf->p_sys->change_lock );
 328     if ( p_intf->p_sys->i_size == 0 )
 329     {
 330         vlc_mutex_unlock( &p_intf->p_sys->change_lock );
 331         return -1;
 332     }
 333     else
 334     {
 335         int i_return = p_intf->p_sys->p_keys[ 0 ];
 336         int i;
 337         p_intf->p_sys->i_size--;
 338         for ( i = 0; i < BUFFER_SIZE - 1; i++)
 339         {
 340             p_intf->p_sys->p_keys[ i ] = p_intf->p_sys->p_keys[ i + 1 ];
 341         }
 342         vlc_mutex_unlock( &p_intf->p_sys->change_lock );
 343         return i_return;
 344     }
 345 }
 346
 347 /*****************************************************************************
 348  * KeyEvent: callback for keyboard events
 349  *****************************************************************************/
 350 static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
 351                      vlc_value_t oldval, vlc_value_t newval, void *p_data )
 352 {
 353     intf_thread_t *p_intf = (intf_thread_t *)p_data;
 354     vlc_mutex_lock( &p_intf->p_sys->change_lock );
 355     if ( p_intf->p_sys->i_size == BUFFER_SIZE )
 356     {
 357         msg_Warn( p_intf, "Event buffer full, dropping keypress" );
 358         vlc_mutex_unlock( &p_intf->p_sys->change_lock );
 359         return VLC_EGENERIC;
 360     }
 361     else
 362     {
 363         p_intf->p_sys->p_keys[ p_intf->p_sys->i_size ] = newval.i_int;
 364         p_intf->p_sys->i_size++;
 365     }
 366     vlc_mutex_unlock( &p_intf->p_sys->change_lock );
 367
 368     return VLC_SUCCESS;
 369 }
 370
 371 static int ActionKeyCB( vlc_object_t *p_this, char const *psz_var,
 372                         vlc_value_t oldval, vlc_value_t newval, void *p_data )
 373 {
 374     vlc_t *p_vlc = (vlc_t *)p_this;
 375     struct hotkey *p_hotkeys = p_vlc->p_hotkeys;
 376     int i;
 377
 378     for( i = 0; p_hotkeys[i].psz_action != NULL; i++ )
 379     {
 380         if( !strcmp( p_hotkeys[i].psz_action, psz_var ) )
 381         {
 382             p_hotkeys[i].i_key = newval.i_int;
 383         }
 384     }
 385
 386     return VLC_SUCCESS;
 387 }