git.sesse.net Git - vlc/blob - src/video_output/vout_intf.c

   1 /*****************************************************************************
   2  * vout_intf.c : video output interface
   3  *****************************************************************************
   4  * Copyright (C) 2000-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Gildas Bazin <gbazin@videolan.org>
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #include <vlc/vlc.h>
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>                                                /* free() */
  32 #include <sys/types.h>                                          /* opendir() */
  33 #include <dirent.h>                                             /* opendir() */
  34
  35 #include <vlc/intf.h>
  36 #include <vlc_block.h>
  37
  38 #include "vlc_video.h"
  39 #include "video_output.h"
  40 #include "vlc_image.h"
  41 #include "vlc_spu.h"
  42
  43 #include <snapshot.h>
  44
  45 /*****************************************************************************
  46  * Local prototypes
  47  *****************************************************************************/
  48 static void InitWindowSize( vout_thread_t *, unsigned *, unsigned * );
  49
  50 /* Object variables callbacks */
  51 static int ZoomCallback( vlc_object_t *, char const *,
  52                          vlc_value_t, vlc_value_t, void * );
  53 static int CropCallback( vlc_object_t *, char const *,
  54                          vlc_value_t, vlc_value_t, void * );
  55 static int AspectCallback( vlc_object_t *, char const *,
  56                            vlc_value_t, vlc_value_t, void * );
  57 static int OnTopCallback( vlc_object_t *, char const *,
  58                           vlc_value_t, vlc_value_t, void * );
  59 static int FullscreenCallback( vlc_object_t *, char const *,
  60                                vlc_value_t, vlc_value_t, void * );
  61 static int SnapshotCallback( vlc_object_t *, char const *,
  62                              vlc_value_t, vlc_value_t, void * );
  63
  64 /*****************************************************************************
  65  * vout_RequestWindow: Create/Get a video window if possible.
  66  *****************************************************************************
  67  * This function looks for the main interface and tries to request
  68  * a new video window. If it fails then the vout will still need to create the
  69  * window by itself.
  70  *****************************************************************************/
  71 void *vout_RequestWindow( vout_thread_t *p_vout,
  72                           int *pi_x_hint, int *pi_y_hint,
  73                           unsigned int *pi_width_hint,
  74                           unsigned int *pi_height_hint )
  75 {
  76     intf_thread_t *p_intf = NULL;
  77     vlc_list_t *p_list;
  78     void *p_window;
  79     vlc_value_t val;
  80     int i;
  81
  82     /* Small kludge */
  83     if( !var_Type( p_vout, "aspect-ratio" ) ) vout_IntfInit( p_vout );
  84
  85     /* Get requested coordinates */
  86     var_Get( p_vout, "video-x", &val );
  87     *pi_x_hint = val.i_int ;
  88     var_Get( p_vout, "video-y", &val );
  89     *pi_y_hint = val.i_int;
  90
  91     *pi_width_hint = p_vout->i_window_width;
  92     *pi_height_hint = p_vout->i_window_height;
  93
  94     /* Check whether someone provided us with a window ID */
  95     var_Get( p_vout->p_libvlc, "drawable", &val );
  96     if( val.i_int ) return (void *)val.i_int;
  97
  98     /* Find if the main interface supports embedding */
  99     p_list = vlc_list_find( p_vout, VLC_OBJECT_INTF, FIND_ANYWHERE );
 100     if( !p_list ) return NULL;
 101
 102     for( i = 0; i < p_list->i_count; i++ )
 103     {
 104         p_intf = (intf_thread_t *)p_list->p_values[i].p_object;
 105         if( p_intf->b_block && p_intf->pf_request_window ) break;
 106         p_intf = NULL;
 107     }
 108
 109     if( !p_intf )
 110     {
 111         vlc_list_release( p_list );
 112         return NULL;
 113     }
 114
 115     vlc_object_yield( p_intf );
 116     vlc_list_release( p_list );
 117
 118     p_window = p_intf->pf_request_window( p_intf, p_vout, pi_x_hint, pi_y_hint,
 119                                           pi_width_hint, pi_height_hint );
 120
 121     if( !p_window ) vlc_object_release( p_intf );
 122     else p_vout->p_parent_intf = p_intf;
 123
 124     return p_window;
 125 }
 126
 127 void vout_ReleaseWindow( vout_thread_t *p_vout, void *p_window )
 128 {
 129     intf_thread_t *p_intf = p_vout->p_parent_intf;
 130
 131     if( !p_intf ) return;
 132
 133     vlc_mutex_lock( &p_intf->object_lock );
 134     if( p_intf->b_dead )
 135     {
 136         vlc_mutex_unlock( &p_intf->object_lock );
 137         return;
 138     }
 139
 140     if( !p_intf->pf_release_window )
 141     {
 142         msg_Err( p_vout, "no pf_release_window");
 143         vlc_mutex_unlock( &p_intf->object_lock );
 144         vlc_object_release( p_intf );
 145         return;
 146     }
 147
 148     p_intf->pf_release_window( p_intf, p_window );
 149
 150     p_vout->p_parent_intf = NULL;
 151     vlc_mutex_unlock( &p_intf->object_lock );
 152     vlc_object_release( p_intf );
 153 }
 154
 155 int vout_ControlWindow( vout_thread_t *p_vout, void *p_window,
 156                         int i_query, va_list args )
 157 {
 158     intf_thread_t *p_intf = p_vout->p_parent_intf;
 159     int i_ret;
 160
 161     if( !p_intf ) return VLC_EGENERIC;
 162
 163     vlc_mutex_lock( &p_intf->object_lock );
 164     if( p_intf->b_dead )
 165     {
 166         vlc_mutex_unlock( &p_intf->object_lock );
 167         return VLC_EGENERIC;
 168     }
 169
 170     if( !p_intf->pf_control_window )
 171     {
 172         msg_Err( p_vout, "no pf_control_window");
 173         vlc_mutex_unlock( &p_intf->object_lock );
 174         return VLC_EGENERIC;
 175     }
 176
 177     i_ret = p_intf->pf_control_window( p_intf, p_window, i_query, args );
 178     vlc_mutex_unlock( &p_intf->object_lock );
 179     return i_ret;
 180 }
 181
 182 /*****************************************************************************
 183  * vout_IntfInit: called during the vout creation to initialise misc things.
 184  *****************************************************************************/
 185 void vout_IntfInit( vout_thread_t *p_vout )
 186 {
 187     vlc_value_t val, text, old_val;
 188     vlc_bool_t b_force_par = VLC_FALSE;
 189     char *psz_buf;
 190
 191     /* Create a few object variables we'll need later on */
 192     var_Create( p_vout, "snapshot-path", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 193     var_Create( p_vout, "snapshot-prefix", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 194     var_Create( p_vout, "snapshot-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 195     var_Create( p_vout, "snapshot-preview", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 196     var_Create( p_vout, "snapshot-sequential",
 197                 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 198     var_Create( p_vout, "snapshot-num", VLC_VAR_INTEGER );
 199     var_SetInteger( p_vout, "snapshot-num", 1 );
 200
 201     var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 202     var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 203     var_Create( p_vout, "align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 204     var_Get( p_vout, "align", &val );
 205     p_vout->i_alignment = val.i_int;
 206
 207     var_Create( p_vout, "video-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 208     var_Create( p_vout, "video-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 209
 210     /* Zoom object var */
 211     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_ISCOMMAND |
 212                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 213
 214     text.psz_string = _("Zoom");
 215     var_Change( p_vout, "zoom", VLC_VAR_SETTEXT, &text, NULL );
 216
 217     var_Get( p_vout, "zoom", &old_val );
 218     if( old_val.f_float == 0.25 ||
 219         old_val.f_float == 0.5 ||
 220         old_val.f_float == 1 ||
 221         old_val.f_float == 2 )
 222     {
 223         var_Change( p_vout, "zoom", VLC_VAR_DELCHOICE, &old_val, NULL );
 224     }
 225
 226     val.f_float = 0.25; text.psz_string = _("1:4 Quarter");
 227     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 228     val.f_float = 0.5; text.psz_string = _("1:2 Half");
 229     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 230     val.f_float = 1; text.psz_string = _("1:1 Original");
 231     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 232     val.f_float = 2; text.psz_string = _("2:1 Double");
 233     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 234
 235     var_Set( p_vout, "zoom", old_val );
 236
 237     var_AddCallback( p_vout, "zoom", ZoomCallback, NULL );
 238
 239     /* Crop offset vars */
 240     var_Create( p_vout, "crop-left", VLC_VAR_INTEGER );
 241     var_Create( p_vout, "crop-top", VLC_VAR_INTEGER );
 242     var_Create( p_vout, "crop-right", VLC_VAR_INTEGER );
 243     var_Create( p_vout, "crop-bottom", VLC_VAR_INTEGER );
 244
 245     var_SetInteger( p_vout, "crop-left", 0 );
 246     var_SetInteger( p_vout, "crop-top", 0 );
 247     var_SetInteger( p_vout, "crop-right", 0 );
 248     var_SetInteger( p_vout, "crop-bottom", 0 );
 249
 250     var_AddCallback( p_vout, "crop-left", CropCallback, NULL );
 251     var_AddCallback( p_vout, "crop-top", CropCallback, NULL );
 252     var_AddCallback( p_vout, "crop-right", CropCallback, NULL );
 253     var_AddCallback( p_vout, "crop-bottom", CropCallback, NULL );
 254
 255     /* Crop object var */
 256     var_Create( p_vout, "crop", VLC_VAR_STRING |
 257                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 258
 259     text.psz_string = _("Crop");
 260     var_Change( p_vout, "crop", VLC_VAR_SETTEXT, &text, NULL );
 261
 262     val.psz_string = "";
 263     var_Change( p_vout, "crop", VLC_VAR_DELCHOICE, &val, 0 );
 264     val.psz_string = ""; text.psz_string = _("Default");
 265     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 266     val.psz_string = "1:1"; text.psz_string = "1:1";
 267     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 268     val.psz_string = "4:3"; text.psz_string = "4:3";
 269     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 270     val.psz_string = "16:9"; text.psz_string = "16:9";
 271     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 272     val.psz_string = "16:10"; text.psz_string = "16:10";
 273     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 274     val.psz_string = "221:100"; text.psz_string = "221:100";
 275     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 276     val.psz_string = "5:4"; text.psz_string = "5:4";
 277     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 278
 279     /* Add custom crop ratios */
 280     psz_buf = config_GetPsz( p_vout, "custom-crop-ratios" );
 281     if( psz_buf && *psz_buf )
 282     {
 283         char *psz_cur = psz_buf;
 284         char *psz_next;
 285         while( psz_cur && *psz_cur )
 286         {
 287             psz_next = strchr( psz_cur, ',' );
 288             if( psz_next )
 289             {
 290                 *psz_next = '\0';
 291                 psz_next++;
 292             }
 293             val.psz_string = strdup( psz_cur );
 294             text.psz_string = strdup( psz_cur );
 295             var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text);
 296             free( val.psz_string );
 297             free( text.psz_string );
 298             psz_cur = psz_next;
 299         }
 300     }
 301     if( psz_buf ) free( psz_buf );
 302
 303     var_AddCallback( p_vout, "crop", CropCallback, NULL );
 304     var_Get( p_vout, "crop", &old_val );
 305     if( old_val.psz_string && *old_val.psz_string )
 306         var_Change( p_vout, "crop", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 307     if( old_val.psz_string ) free( old_val.psz_string );
 308
 309     /* Monitor pixel aspect-ratio */
 310     var_Create( p_vout, "monitor-par", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 311     var_Get( p_vout, "monitor-par", &val );
 312     if( val.psz_string && *val.psz_string )
 313     {
 314         char *psz_parser = strchr( val.psz_string, ':' );
 315         unsigned int i_aspect_num = 0, i_aspect_den = 0;
 316         float i_aspect = 0;
 317         if( psz_parser )
 318         {
 319             i_aspect_num = strtol( val.psz_string, 0, 10 );
 320             i_aspect_den = strtol( ++psz_parser, 0, 10 );
 321         }
 322         else
 323         {
 324             i_aspect = atof( val.psz_string );
 325             vlc_ureduce( &i_aspect_num, &i_aspect_den,
 326                          i_aspect *VOUT_ASPECT_FACTOR, VOUT_ASPECT_FACTOR, 0 );
 327         }
 328         if( !i_aspect_num || !i_aspect_den ) i_aspect_num = i_aspect_den = 1;
 329
 330         p_vout->i_par_num = i_aspect_num;
 331         p_vout->i_par_den = i_aspect_den;
 332
 333         vlc_ureduce( &p_vout->i_par_num, &p_vout->i_par_den,
 334                      p_vout->i_par_num, p_vout->i_par_den, 0 );
 335
 336         msg_Dbg( p_vout, "overriding monitor pixel aspect-ratio: %i:%i",
 337                  p_vout->i_par_num, p_vout->i_par_den );
 338         b_force_par = VLC_TRUE;
 339     }
 340     if( val.psz_string ) free( val.psz_string );
 341
 342     /* Aspect-ratio object var */
 343     var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING |
 344                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 345
 346     text.psz_string = _("Aspect-ratio");
 347     var_Change( p_vout, "aspect-ratio", VLC_VAR_SETTEXT, &text, NULL );
 348
 349     val.psz_string = "";
 350     var_Change( p_vout, "aspect-ratio", VLC_VAR_DELCHOICE, &val, 0 );
 351     val.psz_string = ""; text.psz_string = _("Default");
 352     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 353     val.psz_string = "1:1"; text.psz_string = "1:1";
 354     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 355     val.psz_string = "4:3"; text.psz_string = "4:3";
 356     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 357     val.psz_string = "16:9"; text.psz_string = "16:9";
 358     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 359     val.psz_string = "16:10"; text.psz_string = "16:10";
 360     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 361     val.psz_string = "221:100"; text.psz_string = "221:100";
 362     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 363     val.psz_string = "5:4"; text.psz_string = "5:4";
 364     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 365
 366     /* Add custom aspect ratios */
 367     psz_buf = config_GetPsz( p_vout, "custom-aspect-ratios" );
 368     if( psz_buf && *psz_buf )
 369     {
 370         char *psz_cur = psz_buf;
 371         char *psz_next;
 372         while( psz_cur && *psz_cur )
 373         {
 374             psz_next = strchr( psz_cur, ',' );
 375             if( psz_next )
 376             {
 377                 *psz_next = '\0';
 378                 psz_next++;
 379             }
 380             val.psz_string = strdup( psz_cur );
 381             text.psz_string = strdup( psz_cur );
 382             var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text);
 383             free( val.psz_string );
 384             free( text.psz_string );
 385             psz_cur = psz_next;
 386         }
 387     }
 388     if( psz_buf ) free( psz_buf );
 389
 390     var_AddCallback( p_vout, "aspect-ratio", AspectCallback, NULL );
 391     var_Get( p_vout, "aspect-ratio", &old_val );
 392     if( (old_val.psz_string && *old_val.psz_string) || b_force_par )
 393         var_Change( p_vout, "aspect-ratio", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 394     if( old_val.psz_string ) free( old_val.psz_string );
 395
 396     /* Initialize the dimensions of the video window */
 397     InitWindowSize( p_vout, &p_vout->i_window_width,
 398                     &p_vout->i_window_height );
 399
 400     /* Add a variable to indicate if the window should be on top of others */
 401     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 402     text.psz_string = _("Always on top");
 403     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 404     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 405
 406     /* Add a variable to indicate whether we want window decoration or not */
 407     var_Create( p_vout, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 408
 409     /* Add a fullscreen variable */
 410     var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
 411     text.psz_string = _("Fullscreen");
 412     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 413     var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
 414     if( val.b_bool )
 415     {
 416         /* user requested fullscreen */
 417         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 418     }
 419     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 420
 421     /* Add a snapshot variable */
 422     var_Create( p_vout, "video-snapshot", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
 423     text.psz_string = _("Snapshot");
 424     var_Change( p_vout, "video-snapshot", VLC_VAR_SETTEXT, &text, NULL );
 425     var_AddCallback( p_vout, "video-snapshot", SnapshotCallback, NULL );
 426
 427     /* Mouse coordinates */
 428     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 429     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 430     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 431     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 432     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 433
 434     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 435     val.b_bool = VLC_TRUE;
 436     var_Set( p_vout, "intf-change", val );
 437 }
 438
 439 /*****************************************************************************
 440  * vout_Snapshot: generates a snapshot.
 441  *****************************************************************************/
 442 int vout_Snapshot( vout_thread_t *p_vout, picture_t *p_pic )
 443 {
 444     image_handler_t *p_image = image_HandlerCreate( p_vout );
 445     video_format_t fmt_in = {0}, fmt_out = {0};
 446     char *psz_filename = NULL;
 447     subpicture_t *p_subpic;
 448     picture_t *p_pif;
 449     vlc_value_t val, format;
 450     DIR *path;
 451
 452     int i_ret;
 453
 454     var_Get( p_vout, "snapshot-path", &val );
 455     if( val.psz_string && !*val.psz_string )
 456     {
 457         free( val.psz_string );
 458         val.psz_string = 0;
 459     }
 460
 461     /* Embedded snapshot : if snapshot-path == object:object-id, then
 462        create a snapshot_t* and store it in
 463        object(object-id)->p_private, then unlock and signal the
 464        waiting object.
 465      */
 466     if( val.psz_string && !strncmp( val.psz_string, "object:", 7 ) )
 467     {
 468         int i_id;
 469         vlc_object_t* p_dest;
 470         block_t *p_block;
 471         snapshot_t *p_snapshot;
 472         int i_size;
 473
 474         /* Destination object-id is following object: */
 475         i_id = atoi( &val.psz_string[7] );
 476         p_dest = ( vlc_object_t* )vlc_current_object( i_id );
 477         if( !p_dest )
 478         {
 479             msg_Err( p_vout, "Cannot find calling object" );
 480             image_HandlerDelete( p_image );
 481             return VLC_EGENERIC;
 482         }
 483         /* Object must be locked. We will unlock it once we get the
 484            snapshot and written it to p_private */
 485         p_dest->p_private = NULL;
 486
 487         /* Save the snapshot to a memory zone */
 488         fmt_in = p_vout->fmt_in;
 489         fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 490         /* FIXME: should not be hardcoded. We should be able to
 491         specify the snapshot size (snapshot-width and snapshot-height). */
 492         fmt_out.i_width = 320;
 493         fmt_out.i_height = 200;
 494         fmt_out.i_chroma = VLC_FOURCC( 'p','n','g',' ' );
 495         p_block = ( block_t* ) image_Write( p_image, p_pic, &fmt_in, &fmt_out );
 496         if( !p_block )
 497         {
 498             msg_Err( p_vout, "Could not get snapshot" );
 499             image_HandlerDelete( p_image );
 500             vlc_cond_signal( &p_dest->object_wait );
 501             vlc_mutex_unlock( &p_dest->object_lock );
 502             vlc_object_release( p_dest );
 503             return VLC_EGENERIC;
 504         }
 505
 506         /* Copy the p_block data to a snapshot structure */
 507         /* FIXME: get the timestamp */
 508         p_snapshot = ( snapshot_t* ) malloc( sizeof( snapshot_t ) );
 509         if( !p_snapshot )
 510         {
 511             block_Release( p_block );
 512             image_HandlerDelete( p_image );
 513             vlc_cond_signal( &p_dest->object_wait );
 514             vlc_mutex_unlock( &p_dest->object_lock );
 515             vlc_object_release( p_dest );
 516             return VLC_ENOMEM;
 517         }
 518
 519         i_size = p_block->i_buffer;
 520
 521         p_snapshot->i_width = fmt_out.i_width;
 522         p_snapshot->i_height = fmt_out.i_height;
 523         p_snapshot->i_datasize = i_size;
 524         p_snapshot->date = p_block->i_pts; /* FIXME ?? */
 525         p_snapshot->p_data = ( char* ) malloc( i_size );
 526         if( !p_snapshot->p_data )
 527         {
 528             block_Release( p_block );
 529             free( p_snapshot );
 530             image_HandlerDelete( p_image );
 531             vlc_cond_signal( &p_dest->object_wait );
 532             vlc_mutex_unlock( &p_dest->object_lock );
 533             vlc_object_release( p_dest );
 534             return VLC_ENOMEM;
 535         }
 536         memcpy( p_snapshot->p_data, p_block->p_buffer, p_block->i_buffer );
 537
 538         p_dest->p_private = p_snapshot;
 539
 540         block_Release( p_block );
 541
 542         /* Unlock the object */
 543         vlc_cond_signal( &p_dest->object_wait );
 544         vlc_mutex_unlock( &p_dest->object_lock );
 545         vlc_object_release( p_dest );
 546
 547         image_HandlerDelete( p_image );
 548         return VLC_SUCCESS;
 549     }
 550
 551
 552 #if defined(__APPLE__) || defined(SYS_BEOS)
 553     if( !val.psz_string && p_vout->p_libvlc->psz_homedir )
 554     {
 555         asprintf( &val.psz_string, "%s/Desktop",
 556                   p_vout->p_libvlc->psz_homedir );
 557     }
 558
 559 #elif defined(WIN32) && !defined(UNDER_CE)
 560     if( !val.psz_string && p_vout->p_libvlc->psz_homedir )
 561     {
 562         /* Get the My Pictures folder path */
 563
 564         char *p_mypicturesdir = NULL;
 565         typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
 566                                                    LPSTR );
 567         #ifndef CSIDL_FLAG_CREATE
 568         #   define CSIDL_FLAG_CREATE 0x8000
 569         #endif
 570         #ifndef CSIDL_MYPICTURES
 571         #   define CSIDL_MYPICTURES 0x27
 572         #endif
 573         #ifndef SHGFP_TYPE_CURRENT
 574         #   define SHGFP_TYPE_CURRENT 0
 575         #endif
 576
 577         HINSTANCE shfolder_dll;
 578         SHGETFOLDERPATH SHGetFolderPath ;
 579
 580         /* load the shfolder dll to retrieve SHGetFolderPath */
 581         if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
 582         {
 583             SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
 584                                                       _T("SHGetFolderPathA") );
 585             if( SHGetFolderPath != NULL )
 586             {
 587                 p_mypicturesdir = (char *)malloc( MAX_PATH );
 588                 if( p_mypicturesdir )
 589                 {
 590
 591                     if( S_OK != SHGetFolderPath( NULL,
 592                                         CSIDL_MYPICTURES | CSIDL_FLAG_CREATE,
 593                                         NULL, SHGFP_TYPE_CURRENT,
 594                                         p_mypicturesdir ) )
 595                     {
 596                         free( p_mypicturesdir );
 597                         p_mypicturesdir = NULL;
 598                     }
 599                 }
 600             }
 601             FreeLibrary( shfolder_dll );
 602         }
 603
 604         if( p_mypicturesdir == NULL )
 605         {
 606             asprintf( &val.psz_string, "%s/" CONFIG_DIR,
 607                       p_vout->p_libvlc->psz_homedir );
 608         }
 609         else
 610         {
 611             asprintf( &val.psz_string, p_mypicturesdir );
 612             free( p_mypicturesdir );
 613         }
 614     }
 615
 616 #else
 617     if( !val.psz_string && p_vout->p_libvlc->psz_homedir )
 618     {
 619         asprintf( &val.psz_string, "%s/" CONFIG_DIR,
 620                   p_vout->p_libvlc->psz_homedir );
 621     }
 622 #endif
 623
 624     if( !val.psz_string )
 625     {
 626         msg_Err( p_vout, "no path specified for snapshots" );
 627         return VLC_EGENERIC;
 628     }
 629     var_Get( p_vout, "snapshot-format", &format );
 630     if( !format.psz_string || !*format.psz_string )
 631     {
 632         if( format.psz_string ) free( format.psz_string );
 633         format.psz_string = strdup( "png" );
 634     }
 635
 636     /*
 637      * Did the user specify a directory? If not, path = NULL.
 638      */
 639     path = opendir ( (const char *)val.psz_string  );
 640
 641     if ( path != NULL )
 642     {
 643         char *psz_prefix = var_GetString( p_vout, "snapshot-prefix" );
 644         if( !psz_prefix ) psz_prefix = strdup( "vlcsnap-" );
 645
 646         closedir( path );
 647         if( var_GetBool( p_vout, "snapshot-sequential" ) == VLC_TRUE )
 648         {
 649             int i_num = var_GetInteger( p_vout, "snapshot-num" );
 650             FILE *p_file;
 651             do
 652             {
 653                 asprintf( &psz_filename, "%s/%s%05d.%s", val.psz_string,
 654                           psz_prefix, i_num++, format.psz_string );
 655             }
 656             while( ( p_file = fopen( psz_filename, "r" ) ) && !fclose( p_file ) );
 657             var_SetInteger( p_vout, "snapshot-num", i_num );
 658         }
 659         else
 660         {
 661             asprintf( &psz_filename, "%s/%s%u.%s", val.psz_string,
 662                       psz_prefix,
 663                       (unsigned int)(p_pic->date / 100000) & 0xFFFFFF,
 664                       format.psz_string );
 665         }
 666
 667         free( psz_prefix );
 668     }
 669     else // The user specified a full path name (including file name)
 670     {
 671         asprintf ( &psz_filename, "%s", val.psz_string );
 672     }
 673
 674     free( val.psz_string );
 675     free( format.psz_string );
 676
 677     /* Save the snapshot */
 678     fmt_in = p_vout->fmt_in;
 679     fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 680     i_ret = image_WriteUrl( p_image, p_pic, &fmt_in, &fmt_out, psz_filename );
 681     if( i_ret != VLC_SUCCESS )
 682     {
 683         msg_Err( p_vout, "could not create snapshot %s", psz_filename );
 684         free( psz_filename );
 685         image_HandlerDelete( p_image );
 686         return VLC_EGENERIC;
 687     }
 688
 689     msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
 690     vout_OSDMessage( VLC_OBJECT( p_vout ), DEFAULT_CHAN,
 691                      "%s", psz_filename );
 692     free( psz_filename );
 693
 694     if( var_GetBool( p_vout, "snapshot-preview" ) )
 695     {
 696         /* Inject a subpicture with the snapshot */
 697         memset( &fmt_out, 0, sizeof(fmt_out) );
 698         fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 699         p_pif = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
 700         image_HandlerDelete( p_image );
 701         if( !p_pif ) return VLC_EGENERIC;
 702
 703         p_subpic = spu_CreateSubpicture( p_vout->p_spu );
 704         if( p_subpic == NULL )
 705         {
 706              p_pif->pf_release( p_pif );
 707              return VLC_EGENERIC;
 708         }
 709
 710         p_subpic->i_channel = 0;
 711         p_subpic->i_start = mdate();
 712         p_subpic->i_stop = mdate() + 4000000;
 713         p_subpic->b_ephemer = VLC_TRUE;
 714         p_subpic->b_fade = VLC_TRUE;
 715         p_subpic->i_original_picture_width = p_vout->render.i_width * 4;
 716         p_subpic->i_original_picture_height = p_vout->render.i_height * 4;
 717
 718         p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
 719         vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture,
 720                           p_pif );
 721         p_pif->pf_release( p_pif );
 722
 723         spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
 724     }
 725     else
 726     {
 727         image_HandlerDelete( p_image );
 728     }
 729
 730     return VLC_SUCCESS;
 731 }
 732
 733 /*****************************************************************************
 734  * Handle filters
 735  *****************************************************************************/
 736
 737 void vout_EnableFilter( vout_thread_t *p_vout, char *psz_name,
 738                         vlc_bool_t b_add, vlc_bool_t b_setconfig )
 739 {
 740     char *psz_parser;
 741     char *psz_string = config_GetPsz( p_vout, "vout-filter" );
 742
 743     /* Todo : Use some generic chain manipulation functions */
 744     if( !psz_string ) psz_string = strdup("");
 745
 746     psz_parser = strstr( psz_string, psz_name );
 747     if( b_add )
 748     {
 749         if( !psz_parser )
 750         {
 751             psz_parser = psz_string;
 752             asprintf( &psz_string, (*psz_string) ? "%s:%s" : "%s%s",
 753                             psz_string, psz_name );
 754             free( psz_parser );
 755         }
 756         else
 757             return;
 758     }
 759     else
 760     {
 761         if( psz_parser )
 762         {
 763             memmove( psz_parser, psz_parser + strlen(psz_name) +
 764                             (*(psz_parser + strlen(psz_name)) == ':' ? 1 : 0 ),
 765                             strlen(psz_parser + strlen(psz_name)) + 1 );
 766
 767             /* Remove trailing : : */
 768             if( *(psz_string+strlen(psz_string ) -1 ) == ':' )
 769             {
 770                 *(psz_string+strlen(psz_string ) -1 ) = '\0';
 771             }
 772          }
 773          else
 774          {
 775              free( psz_string );
 776              return;
 777          }
 778     }
 779     if( b_setconfig )
 780         config_PutPsz( p_vout, "vout-filter", psz_string );
 781
 782     var_SetString( p_vout, "vout-filter", psz_string );
 783     free( psz_string );
 784 }
 785
 786 /*****************************************************************************
 787  * vout_ControlDefault: default methods for video output control.
 788  *****************************************************************************/
 789 int vout_vaControlDefault( vout_thread_t *p_vout, int i_query, va_list args )
 790 {
 791     switch( i_query )
 792     {
 793     case VOUT_REPARENT:
 794     case VOUT_CLOSE:
 795         if( p_vout->p_parent_intf )
 796         {
 797             vlc_object_release( p_vout->p_parent_intf );
 798             p_vout->p_parent_intf = NULL;
 799         }
 800         return VLC_SUCCESS;
 801         break;
 802
 803     case VOUT_SNAPSHOT:
 804         p_vout->b_snapshot = VLC_TRUE;
 805         return VLC_SUCCESS;
 806         break;
 807
 808     default:
 809         msg_Dbg( p_vout, "control query not supported" );
 810         return VLC_EGENERIC;
 811     }
 812 }
 813
 814 /*****************************************************************************
 815  * InitWindowSize: find the initial dimensions the video window should have.
 816  *****************************************************************************
 817  * This function will check the "width", "height" and "zoom" config options and
 818  * will calculate the size that the video window should have.
 819  *****************************************************************************/
 820 static void InitWindowSize( vout_thread_t *p_vout, unsigned *pi_width,
 821                             unsigned *pi_height )
 822 {
 823     vlc_value_t val;
 824     int i_width, i_height;
 825     uint64_t ll_zoom;
 826
 827 #define FP_FACTOR 1000                             /* our fixed point factor */
 828
 829     var_Get( p_vout, "width", &val );
 830     i_width = val.i_int;
 831     var_Get( p_vout, "height", &val );
 832     i_height = val.i_int;
 833     var_Get( p_vout, "zoom", &val );
 834     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
 835
 836     if( i_width > 0 && i_height > 0)
 837     {
 838         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 839         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 840         goto initwsize_end;
 841     }
 842     else if( i_width > 0 )
 843     {
 844         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 845         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 846             p_vout->fmt_in.i_sar_den * i_width / p_vout->fmt_in.i_sar_num /
 847             FP_FACTOR / p_vout->fmt_in.i_visible_width );
 848         goto initwsize_end;
 849     }
 850     else if( i_height > 0 )
 851     {
 852         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 853         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 854             p_vout->fmt_in.i_sar_num * i_height / p_vout->fmt_in.i_sar_den /
 855             FP_FACTOR / p_vout->fmt_in.i_visible_height );
 856         goto initwsize_end;
 857     }
 858
 859     if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 860     {
 861         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 862             p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den / FP_FACTOR );
 863         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom
 864             / FP_FACTOR );
 865     }
 866     else
 867     {
 868         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom
 869             / FP_FACTOR );
 870         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 871             p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num / FP_FACTOR );
 872     }
 873
 874 initwsize_end:
 875     msg_Dbg( p_vout, "window size: %dx%d", p_vout->i_window_width,
 876              p_vout->i_window_height );
 877
 878 #undef FP_FACTOR
 879 }
 880
 881 /*****************************************************************************
 882  * Object variables callbacks
 883  *****************************************************************************/
 884 static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
 885                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 886 {
 887     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 888     InitWindowSize( p_vout, &p_vout->i_window_width,
 889                     &p_vout->i_window_height );
 890     vout_Control( p_vout, VOUT_SET_SIZE, p_vout->i_window_width,
 891                   p_vout->i_window_height );
 892     return VLC_SUCCESS;
 893 }
 894
 895 static int CropCallback( vlc_object_t *p_this, char const *psz_cmd,
 896                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 897 {
 898     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 899     int64_t i_aspect_num, i_aspect_den;
 900     unsigned int i_width, i_height;
 901
 902     /* Restore defaults */
 903     p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset;
 904     p_vout->fmt_in.i_visible_width = p_vout->fmt_render.i_visible_width;
 905     p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset;
 906     p_vout->fmt_in.i_visible_height = p_vout->fmt_render.i_visible_height;
 907
 908     if( !strcmp( psz_cmd, "crop" ) )
 909     {
 910         char *psz_end = NULL, *psz_parser = strchr( newval.psz_string, ':' );
 911         if( psz_parser )
 912         {
 913             /* We're using the 3:4 syntax */
 914             i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
 915             if( psz_end == newval.psz_string || !i_aspect_num ) goto crop_end;
 916
 917             i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
 918             if( psz_end == psz_parser || !i_aspect_den ) goto crop_end;
 919
 920             i_width = p_vout->fmt_in.i_sar_den*p_vout->fmt_render.i_visible_height *
 921                 i_aspect_num / i_aspect_den / p_vout->fmt_in.i_sar_num;
 922             i_height = p_vout->fmt_render.i_visible_width*p_vout->fmt_in.i_sar_num *
 923                 i_aspect_den / i_aspect_num / p_vout->fmt_in.i_sar_den;
 924
 925             if( i_width < p_vout->fmt_render.i_visible_width )
 926             {
 927                 p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset +
 928                     (p_vout->fmt_render.i_visible_width - i_width) / 2;
 929                 p_vout->fmt_in.i_visible_width = i_width;
 930             }
 931             else
 932             {
 933                 p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset +
 934                     (p_vout->fmt_render.i_visible_height - i_height) / 2;
 935                 p_vout->fmt_in.i_visible_height = i_height;
 936             }
 937         }
 938         else
 939         {
 940             psz_parser = strchr( newval.psz_string, 'x' );
 941             if( psz_parser )
 942             {
 943                 /* Maybe we're using the <width>x<height>+<left>+<top> syntax */
 944                 unsigned int i_crop_width, i_crop_height, i_crop_top, i_crop_left;
 945
 946                 i_crop_width = strtol( newval.psz_string, &psz_end, 10 );
 947                 if( psz_end != psz_parser ) goto crop_end;
 948
 949                 psz_parser = strchr( ++psz_end, '+' );
 950                 i_crop_height = strtol( psz_end, &psz_end, 10 );
 951                 if( psz_end != psz_parser ) goto crop_end;
 952
 953                 psz_parser = strchr( ++psz_end, '+' );
 954                 i_crop_left = strtol( psz_end, &psz_end, 10 );
 955                 if( psz_end != psz_parser ) goto crop_end;
 956
 957                 psz_end++;
 958                 i_crop_top = strtol( psz_end, &psz_end, 10 );
 959                 if( *psz_end != '\0' ) goto crop_end;
 960
 961                 i_width = i_crop_width;
 962                 p_vout->fmt_in.i_visible_width = i_width;
 963
 964                 i_height = i_crop_height;
 965                 p_vout->fmt_in.i_visible_height = i_height;
 966
 967                 p_vout->fmt_in.i_x_offset = i_crop_left;
 968                 p_vout->fmt_in.i_y_offset = i_crop_top;
 969             }
 970             else
 971             {
 972                 /* Maybe we're using the <left>+<top>+<right>+<bottom> syntax */
 973                 unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
 974
 975                 psz_parser = strchr( newval.psz_string, '+' );
 976                 i_crop_left = strtol( newval.psz_string, &psz_end, 10 );
 977                 if( psz_end != psz_parser ) goto crop_end;
 978
 979                 psz_parser = strchr( ++psz_end, '+' );
 980                 i_crop_top = strtol( psz_end, &psz_end, 10 );
 981                 if( psz_end != psz_parser ) goto crop_end;
 982
 983                 psz_parser = strchr( ++psz_end, '+' );
 984                 i_crop_right = strtol( psz_end, &psz_end, 10 );
 985                 if( psz_end != psz_parser ) goto crop_end;
 986
 987                 psz_end++;
 988                 i_crop_bottom = strtol( psz_end, &psz_end, 10 );
 989                 if( *psz_end != '\0' ) goto crop_end;
 990
 991                 i_width = p_vout->fmt_render.i_visible_width
 992                           - i_crop_left - i_crop_right;
 993                 p_vout->fmt_in.i_visible_width = i_width;
 994
 995                 i_height = p_vout->fmt_render.i_visible_height
 996                            - i_crop_top - i_crop_bottom;
 997                 p_vout->fmt_in.i_visible_height = i_height;
 998
 999                 p_vout->fmt_in.i_x_offset = i_crop_left;
1000                 p_vout->fmt_in.i_y_offset = i_crop_top;
1001             }
1002         }
1003     }
1004     else if( !strcmp( psz_cmd, "crop-top" )
1005           || !strcmp( psz_cmd, "crop-left" )
1006           || !strcmp( psz_cmd, "crop-bottom" )
1007           || !strcmp( psz_cmd, "crop-right" ) )
1008     {
1009         unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
1010
1011         i_crop_top = var_GetInteger( p_vout, "crop-top" );
1012         i_crop_left = var_GetInteger( p_vout, "crop-left" );
1013         i_crop_right = var_GetInteger( p_vout, "crop-right" );
1014         i_crop_bottom = var_GetInteger( p_vout, "crop-bottom" );
1015
1016         i_width = p_vout->fmt_render.i_visible_width
1017                   - i_crop_left - i_crop_right;
1018         p_vout->fmt_in.i_visible_width = i_width;
1019
1020         i_height = p_vout->fmt_render.i_visible_height
1021                    - i_crop_top - i_crop_bottom;
1022         p_vout->fmt_in.i_visible_height = i_height;
1023
1024         p_vout->fmt_in.i_x_offset = i_crop_left;
1025         p_vout->fmt_in.i_y_offset = i_crop_top;
1026     }
1027
1028  crop_end:
1029     InitWindowSize( p_vout, &p_vout->i_window_width,
1030                     &p_vout->i_window_height );
1031
1032     p_vout->i_changes |= VOUT_CROP_CHANGE;
1033
1034     msg_Dbg( p_vout, "cropping picture %ix%i to %i,%i,%ix%i",
1035              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
1036              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
1037              p_vout->fmt_in.i_visible_width,
1038              p_vout->fmt_in.i_visible_height );
1039
1040     return VLC_SUCCESS;
1041 }
1042
1043 static int AspectCallback( vlc_object_t *p_this, char const *psz_cmd,
1044                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
1045 {
1046     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1047     unsigned int i_aspect_num, i_aspect_den, i_sar_num, i_sar_den;
1048     vlc_value_t val;
1049
1050     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
1051
1052     /* Restore defaults */
1053     p_vout->fmt_in.i_sar_num = p_vout->fmt_render.i_sar_num;
1054     p_vout->fmt_in.i_sar_den = p_vout->fmt_render.i_sar_den;
1055     p_vout->fmt_in.i_aspect = p_vout->fmt_render.i_aspect;
1056     p_vout->render.i_aspect = p_vout->fmt_render.i_aspect;
1057
1058     if( !psz_parser ) goto aspect_end;
1059
1060     i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
1061     if( psz_end == newval.psz_string || !i_aspect_num ) goto aspect_end;
1062
1063     i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
1064     if( psz_end == psz_parser || !i_aspect_den ) goto aspect_end;
1065
1066     i_sar_num = i_aspect_num * p_vout->fmt_render.i_visible_height;
1067     i_sar_den = i_aspect_den * p_vout->fmt_render.i_visible_width;
1068     vlc_ureduce( &i_sar_num, &i_sar_den, i_sar_num, i_sar_den, 0 );
1069     p_vout->fmt_in.i_sar_num = i_sar_num;
1070     p_vout->fmt_in.i_sar_den = i_sar_den;
1071     p_vout->fmt_in.i_aspect = i_aspect_num * VOUT_ASPECT_FACTOR / i_aspect_den;
1072     p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
1073
1074  aspect_end:
1075     if( p_vout->i_par_num && p_vout->i_par_den )
1076     {
1077         p_vout->fmt_in.i_sar_num *= p_vout->i_par_den;
1078         p_vout->fmt_in.i_sar_den *= p_vout->i_par_num;
1079         p_vout->fmt_in.i_aspect = p_vout->fmt_in.i_aspect *
1080             p_vout->i_par_den / p_vout->i_par_num;
1081         p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
1082     }
1083
1084     p_vout->i_changes |= VOUT_ASPECT_CHANGE;
1085
1086     vlc_ureduce( &i_aspect_num, &i_aspect_den,
1087                  p_vout->fmt_in.i_aspect, VOUT_ASPECT_FACTOR, 0 );
1088     msg_Dbg( p_vout, "new aspect-ratio %i:%i, sample aspect-ratio %i:%i",
1089              i_aspect_num, i_aspect_den,
1090              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
1091
1092     var_Get( p_vout, "crop", &val );
1093     return CropCallback( p_this, "crop", val, val, 0 );
1094
1095     return VLC_SUCCESS;
1096 }
1097
1098 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
1099                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
1100 {
1101     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1102     playlist_t *p_playlist;
1103     vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, newval.b_bool );
1104
1105     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
1106                                                  FIND_PARENT );
1107     if( p_playlist )
1108     {
1109         /* Modify playlist as well because the vout might have to be restarted */
1110         var_Create( p_playlist, "video-on-top", VLC_VAR_BOOL );
1111         var_Set( p_playlist, "video-on-top", newval );
1112
1113         vlc_object_release( p_playlist );
1114     }
1115     return VLC_SUCCESS;
1116 }
1117
1118 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
1119                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1120 {
1121     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1122     playlist_t *p_playlist;
1123     vlc_value_t val;
1124
1125     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
1126
1127     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
1128                                                  FIND_PARENT );
1129     if( p_playlist )
1130     {
1131         /* Modify playlist as well because the vout might have to be restarted */
1132         var_Create( p_playlist, "fullscreen", VLC_VAR_BOOL );
1133         var_Set( p_playlist, "fullscreen", newval );
1134
1135         vlc_object_release( p_playlist );
1136     }
1137
1138     /* Disable "always on top" in fullscreen mode */
1139     var_Get( p_vout, "video-on-top", &val );
1140     if( newval.b_bool && val.b_bool )
1141     {
1142         val.b_bool = VLC_FALSE;
1143         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
1144     }
1145     else if( !newval.b_bool && val.b_bool )
1146     {
1147         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
1148     }
1149
1150     val.b_bool = VLC_TRUE;
1151     var_Set( p_vout, "intf-change", val );
1152     return VLC_SUCCESS;
1153 }
1154
1155 static int SnapshotCallback( vlc_object_t *p_this, char const *psz_cmd,
1156                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1157 {
1158     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1159     vout_Control( p_vout, VOUT_SNAPSHOT );
1160     return VLC_SUCCESS;
1161 }