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

   1 /*****************************************************************************
   2  * vout_intf.c : video output interface
   3  *****************************************************************************
   4  * Copyright (C) 2000-2007 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 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc/vlc.h>
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>                                                /* free() */
  36 #include <sys/types.h>                                          /* opendir() */
  37 #include <dirent.h>                                             /* opendir() */
  38
  39 #include <vlc_interface.h>
  40 #include <vlc_block.h>
  41 #include <vlc_playlist.h>
  42
  43 #include <vlc_vout.h>
  44 #include <vlc_image.h>
  45 #include <vlc_osd.h>
  46 #include <vlc_charset.h>
  47
  48 #include <vlc_strings.h>
  49 #include <vlc_charset.h>
  50 #include "../libvlc.h"
  51
  52 /*****************************************************************************
  53  * Local prototypes
  54  *****************************************************************************/
  55 static void InitWindowSize( vout_thread_t *, unsigned *, unsigned * );
  56
  57 /* Object variables callbacks */
  58 static int ZoomCallback( vlc_object_t *, char const *,
  59                          vlc_value_t, vlc_value_t, void * );
  60 static int CropCallback( vlc_object_t *, char const *,
  61                          vlc_value_t, vlc_value_t, void * );
  62 static int AspectCallback( vlc_object_t *, char const *,
  63                            vlc_value_t, vlc_value_t, void * );
  64 static int OnTopCallback( vlc_object_t *, char const *,
  65                           vlc_value_t, vlc_value_t, void * );
  66 static int FullscreenCallback( vlc_object_t *, char const *,
  67                                vlc_value_t, vlc_value_t, void * );
  68 static int SnapshotCallback( vlc_object_t *, char const *,
  69                              vlc_value_t, vlc_value_t, void * );
  70
  71 static int TitleShowCallback( vlc_object_t *, char const *,
  72                               vlc_value_t, vlc_value_t, void * );
  73 static int TitleTimeoutCallback( vlc_object_t *, char const *,
  74                                  vlc_value_t, vlc_value_t, void * );
  75 static int TitlePositionCallback( vlc_object_t *, char const *,
  76                                   vlc_value_t, vlc_value_t, void * );
  77
  78 /*****************************************************************************
  79  * vout_RequestWindow: Create/Get a video window if possible.
  80  *****************************************************************************
  81  * This function looks for the main interface and tries to request
  82  * a new video window. If it fails then the vout will still need to create the
  83  * window by itself.
  84  *****************************************************************************/
  85 void *vout_RequestWindow( vout_thread_t *p_vout,
  86                           int *pi_x_hint, int *pi_y_hint,
  87                           unsigned int *pi_width_hint,
  88                           unsigned int *pi_height_hint )
  89 {
  90     intf_thread_t *p_intf = NULL;
  91     vlc_list_t *p_list;
  92     void *p_window;
  93     vlc_value_t val;
  94     int i;
  95
  96     /* Small kludge */
  97     if( !var_Type( p_vout, "aspect-ratio" ) ) vout_IntfInit( p_vout );
  98
  99     /* Get requested coordinates */
 100     *pi_x_hint = var_GetInteger( p_vout, "video-x" );
 101     *pi_y_hint = var_GetInteger( p_vout, "video-y" );
 102
 103     *pi_width_hint = p_vout->i_window_width;
 104     *pi_height_hint = p_vout->i_window_height;
 105
 106     /* Check whether someone provided us with a window ID */
 107     var_Get( p_vout->p_libvlc, "drawable", &val );
 108     if( val.i_int ) return (void *)(intptr_t)val.i_int;
 109
 110     /* Find if the main interface supports embedding */
 111     p_list = vlc_list_find( p_vout, VLC_OBJECT_INTF, FIND_ANYWHERE );
 112     if( !p_list ) return NULL;
 113
 114     for( i = 0; i < p_list->i_count; i++ )
 115     {
 116         p_intf = (intf_thread_t *)p_list->p_values[i].p_object;
 117         if( p_intf->pf_request_window ) break;
 118         p_intf = NULL;
 119     }
 120
 121     if( !p_intf )
 122     {
 123         vlc_list_release( p_list );
 124         return NULL;
 125     }
 126
 127     vlc_object_yield( p_intf );
 128     vlc_list_release( p_list );
 129
 130     p_window = p_intf->pf_request_window( p_intf, p_vout, pi_x_hint, pi_y_hint,
 131                                           pi_width_hint, pi_height_hint );
 132
 133     if( !p_window ) vlc_object_release( p_intf );
 134     else p_vout->p_parent_intf = p_intf;
 135
 136     return p_window;
 137 }
 138
 139 void vout_ReleaseWindow( vout_thread_t *p_vout, void *p_window )
 140 {
 141     intf_thread_t *p_intf = p_vout->p_parent_intf;
 142
 143     if( !p_intf ) return;
 144
 145     vlc_mutex_lock( &p_intf->object_lock );
 146     if( p_intf->b_dead )
 147     {
 148         vlc_mutex_unlock( &p_intf->object_lock );
 149         return;
 150     }
 151
 152     if( !p_intf->pf_release_window )
 153     {
 154         msg_Err( p_vout, "no pf_release_window");
 155         vlc_mutex_unlock( &p_intf->object_lock );
 156         vlc_object_release( p_intf );
 157         return;
 158     }
 159
 160     p_intf->pf_release_window( p_intf, p_window );
 161
 162     p_vout->p_parent_intf = NULL;
 163     vlc_mutex_unlock( &p_intf->object_lock );
 164     vlc_object_release( p_intf );
 165 }
 166
 167 int vout_ControlWindow( vout_thread_t *p_vout, void *p_window,
 168                         int i_query, va_list args )
 169 {
 170     intf_thread_t *p_intf = p_vout->p_parent_intf;
 171     int i_ret;
 172
 173     if( !p_intf ) return VLC_EGENERIC;
 174
 175     vlc_mutex_lock( &p_intf->object_lock );
 176     if( p_intf->b_dead )
 177     {
 178         vlc_mutex_unlock( &p_intf->object_lock );
 179         return VLC_EGENERIC;
 180     }
 181
 182     if( !p_intf->pf_control_window )
 183     {
 184         msg_Err( p_vout, "no pf_control_window");
 185         vlc_mutex_unlock( &p_intf->object_lock );
 186         return VLC_EGENERIC;
 187     }
 188
 189     i_ret = p_intf->pf_control_window( p_intf, p_window, i_query, args );
 190     vlc_mutex_unlock( &p_intf->object_lock );
 191     return i_ret;
 192 }
 193
 194 /*****************************************************************************
 195  * vout_IntfInit: called during the vout creation to initialise misc things.
 196  *****************************************************************************/
 197 static const struct
 198 {
 199     double f_value;
 200     const char *psz_label;
 201 } p_zoom_values[] = {
 202     { 0.25, N_("1:4 Quarter") },
 203     { 0.5, N_("1:2 Half") },
 204     { 1, N_("1:1 Original") },
 205     { 2, N_("2:1 Double") },
 206     { 0, NULL } };
 207
 208 static const struct
 209 {
 210     const char *psz_value;
 211     const char *psz_label;
 212 } p_crop_values[] = {
 213     { "", N_("Default") },
 214     { "1:1", "1:1" },
 215     { "4:3", "4:3" },
 216     { "16:9", "16:9" },
 217     { "16:10", "16:10" },
 218     { "5:4", "5:4" },
 219     { "5:3", "5:3" },
 220     { "1.85:1", "1.85:1" },
 221     { "221:100", "2.21:1" },
 222     { "235:100", "2.35:1" },
 223     { "239:100", "2.39:1" },
 224     { NULL, NULL } };
 225
 226 static const struct
 227 {
 228     const char *psz_value;
 229     const char *psz_label;
 230 } p_aspect_ratio_values[] = {
 231     { "", N_("Default") },
 232     { "1:1", "1:1" },
 233     { "4:3", "4:3" },
 234     { "16:9", "16:9" },
 235     { "16:10", "16:10" },
 236     { "221:100", "2.21:1" },
 237     { "5:4", "5:4" },
 238     { NULL, NULL } };
 239
 240 static void AddCustomRatios( vout_thread_t *p_vout, const char *psz_var,
 241                              char *psz_list )
 242 {
 243     if( psz_list && *psz_list )
 244     {
 245         char *psz_cur = psz_list;
 246         char *psz_next;
 247         while( psz_cur && *psz_cur )
 248         {
 249             vlc_value_t val, text;
 250             psz_next = strchr( psz_cur, ',' );
 251             if( psz_next )
 252             {
 253                 *psz_next = '\0';
 254                 psz_next++;
 255             }
 256             val.psz_string = psz_cur;
 257             text.psz_string = psz_cur;
 258             var_Change( p_vout, psz_var, VLC_VAR_ADDCHOICE, &val, &text);
 259             psz_cur = psz_next;
 260         }
 261     }
 262 }
 263
 264 void vout_IntfInit( vout_thread_t *p_vout )
 265 {
 266     vlc_value_t val, text, old_val;
 267     bool b_force_par = false;
 268     char *psz_buf;
 269     int i;
 270
 271     /* Create a few object variables we'll need later on */
 272     var_Create( p_vout, "snapshot-path", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 273     var_Create( p_vout, "snapshot-prefix", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 274     var_Create( p_vout, "snapshot-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 275     var_Create( p_vout, "snapshot-preview", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 276     var_Create( p_vout, "snapshot-sequential",
 277                 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 278     var_Create( p_vout, "snapshot-num", VLC_VAR_INTEGER );
 279     var_SetInteger( p_vout, "snapshot-num", 1 );
 280     var_Create( p_vout, "snapshot-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 281     var_Create( p_vout, "snapshot-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 282
 283     var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 284     var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 285     p_vout->i_alignment = var_CreateGetInteger( p_vout, "align" );
 286
 287     var_Create( p_vout, "video-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 288     var_Create( p_vout, "video-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 289
 290     var_Create( p_vout, "mouse-hide-timeout",
 291                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 292
 293     p_vout->b_title_show = var_CreateGetBool( p_vout, "video-title-show" );
 294     p_vout->i_title_timeout =
 295         (mtime_t)var_CreateGetInteger( p_vout, "video-title-timeout" );
 296     p_vout->i_title_position =
 297         var_CreateGetInteger( p_vout, "video-title-position" );
 298
 299     var_AddCallback( p_vout, "video-title-show", TitleShowCallback, NULL );
 300     var_AddCallback( p_vout, "video-title-timeout", TitleTimeoutCallback, NULL );
 301     var_AddCallback( p_vout, "video-title-position", TitlePositionCallback, NULL );
 302
 303     /* Zoom object var */
 304     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_ISCOMMAND |
 305                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 306
 307     text.psz_string = _("Zoom");
 308     var_Change( p_vout, "zoom", VLC_VAR_SETTEXT, &text, NULL );
 309
 310     var_Get( p_vout, "zoom", &old_val );
 311
 312     for( i = 0; p_zoom_values[i].f_value; i++ )
 313     {
 314         if( old_val.f_float == p_zoom_values[i].f_value )
 315             var_Change( p_vout, "zoom", VLC_VAR_DELCHOICE, &old_val, NULL );
 316         val.f_float = p_zoom_values[i].f_value;
 317         text.psz_string = _( p_zoom_values[i].psz_label );
 318         var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 319     }
 320
 321     var_Set( p_vout, "zoom", old_val ); /* Is this really needed? */
 322
 323     var_AddCallback( p_vout, "zoom", ZoomCallback, NULL );
 324
 325     /* Crop offset vars */
 326     var_Create( p_vout, "crop-left", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 327     var_Create( p_vout, "crop-top", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 328     var_Create( p_vout, "crop-right", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 329     var_Create( p_vout, "crop-bottom", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 330
 331     var_AddCallback( p_vout, "crop-left", CropCallback, NULL );
 332     var_AddCallback( p_vout, "crop-top", CropCallback, NULL );
 333     var_AddCallback( p_vout, "crop-right", CropCallback, NULL );
 334     var_AddCallback( p_vout, "crop-bottom", CropCallback, NULL );
 335
 336     /* Crop object var */
 337     var_Create( p_vout, "crop", VLC_VAR_STRING | VLC_VAR_ISCOMMAND |
 338                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 339
 340     text.psz_string = _("Crop");
 341     var_Change( p_vout, "crop", VLC_VAR_SETTEXT, &text, NULL );
 342
 343     val.psz_string = (char*)"";
 344     var_Change( p_vout, "crop", VLC_VAR_DELCHOICE, &val, 0 );
 345
 346     for( i = 0; p_crop_values[i].psz_value; i++ )
 347     {
 348         val.psz_string = (char*)p_crop_values[i].psz_value;
 349         text.psz_string = _( p_crop_values[i].psz_label );
 350         var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 351     }
 352
 353     /* update triggered every time the vout's crop parameters are changed */
 354     var_Create( p_vout, "crop-update", VLC_VAR_VOID );
 355
 356     /* Add custom crop ratios */
 357     psz_buf = config_GetPsz( p_vout, "custom-crop-ratios" );
 358     AddCustomRatios( p_vout, "crop", psz_buf );
 359     free( psz_buf );
 360
 361     var_AddCallback( p_vout, "crop", CropCallback, NULL );
 362     var_Get( p_vout, "crop", &old_val );
 363     if( old_val.psz_string && *old_val.psz_string )
 364         var_Change( p_vout, "crop", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 365     free( old_val.psz_string );
 366
 367     /* Monitor pixel aspect-ratio */
 368     var_Create( p_vout, "monitor-par", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 369     var_Get( p_vout, "monitor-par", &val );
 370     if( val.psz_string && *val.psz_string )
 371     {
 372         char *psz_parser = strchr( val.psz_string, ':' );
 373         unsigned int i_aspect_num = 0, i_aspect_den = 0;
 374         float i_aspect = 0;
 375         if( psz_parser )
 376         {
 377             i_aspect_num = strtol( val.psz_string, 0, 10 );
 378             i_aspect_den = strtol( ++psz_parser, 0, 10 );
 379         }
 380         else
 381         {
 382             i_aspect = atof( val.psz_string );
 383             vlc_ureduce( &i_aspect_num, &i_aspect_den,
 384                          i_aspect *VOUT_ASPECT_FACTOR, VOUT_ASPECT_FACTOR, 0 );
 385         }
 386         if( !i_aspect_num || !i_aspect_den ) i_aspect_num = i_aspect_den = 1;
 387
 388         p_vout->i_par_num = i_aspect_num;
 389         p_vout->i_par_den = i_aspect_den;
 390
 391         vlc_ureduce( &p_vout->i_par_num, &p_vout->i_par_den,
 392                      p_vout->i_par_num, p_vout->i_par_den, 0 );
 393
 394         msg_Dbg( p_vout, "overriding monitor pixel aspect-ratio: %i:%i",
 395                  p_vout->i_par_num, p_vout->i_par_den );
 396         b_force_par = true;
 397     }
 398     free( val.psz_string );
 399
 400     /* Aspect-ratio object var */
 401     var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING | VLC_VAR_ISCOMMAND |
 402                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 403
 404     text.psz_string = _("Aspect-ratio");
 405     var_Change( p_vout, "aspect-ratio", VLC_VAR_SETTEXT, &text, NULL );
 406
 407     val.psz_string = (char*)"";
 408     var_Change( p_vout, "aspect-ratio", VLC_VAR_DELCHOICE, &val, 0 );
 409
 410     for( i = 0; p_aspect_ratio_values[i].psz_value; i++ )
 411     {
 412         val.psz_string = (char*)p_aspect_ratio_values[i].psz_value;
 413         text.psz_string = _( p_aspect_ratio_values[i].psz_label );
 414         var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 415     }
 416
 417     /* Add custom aspect ratios */
 418     psz_buf = config_GetPsz( p_vout, "custom-aspect-ratios" );
 419     AddCustomRatios( p_vout, "aspect-ratio", psz_buf );
 420     free( psz_buf );
 421
 422     var_AddCallback( p_vout, "aspect-ratio", AspectCallback, NULL );
 423     var_Get( p_vout, "aspect-ratio", &old_val );
 424     if( (old_val.psz_string && *old_val.psz_string) || b_force_par )
 425         var_Change( p_vout, "aspect-ratio", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 426     free( old_val.psz_string );
 427
 428     /* Initialize the dimensions of the video window */
 429     InitWindowSize( p_vout, &p_vout->i_window_width,
 430                     &p_vout->i_window_height );
 431
 432     /* Add a variable to indicate if the window should be on top of others */
 433     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT
 434                 | VLC_VAR_ISCOMMAND );
 435     text.psz_string = _("Always on top");
 436     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 437     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 438
 439     /* Add a variable to indicate whether we want window decoration or not */
 440     var_Create( p_vout, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 441
 442     /* Add a fullscreen variable */
 443     if( var_CreateGetBoolCommand( p_vout, "fullscreen" ) )
 444     {
 445         /* user requested fullscreen */
 446         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 447     }
 448     text.psz_string = _("Fullscreen");
 449     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 450     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 451
 452     /* Add a snapshot variable */
 453     var_Create( p_vout, "video-snapshot", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
 454     text.psz_string = _("Snapshot");
 455     var_Change( p_vout, "video-snapshot", VLC_VAR_SETTEXT, &text, NULL );
 456     var_AddCallback( p_vout, "video-snapshot", SnapshotCallback, NULL );
 457
 458     /* Mouse coordinates */
 459     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 460     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 461     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 462     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 463     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 464
 465     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 466     var_SetBool( p_vout, "intf-change", true );
 467 }
 468
 469 /*****************************************************************************
 470  * vout_Snapshot: generates a snapshot.
 471  *****************************************************************************/
 472 int vout_Snapshot( vout_thread_t *p_vout, picture_t *p_pic )
 473 {
 474     image_handler_t *p_image = image_HandlerCreate( p_vout );
 475     video_format_t fmt_in, fmt_out;
 476     char *psz_filename = NULL;
 477     subpicture_t *p_subpic;
 478     picture_t *p_pif;
 479     vlc_value_t val, format;
 480     DIR *path;
 481     int i_ret;
 482
 483     memset( &fmt_in, 0, sizeof(video_format_t) );
 484     memset( &fmt_out, 0, sizeof(video_format_t) );
 485
 486     var_Get( p_vout, "snapshot-path", &val );
 487     if( val.psz_string && !*val.psz_string )
 488     {
 489         free( val.psz_string );
 490         val.psz_string = 0;
 491     }
 492
 493     /* Embedded snapshot : if snapshot-path == object:object-id, then
 494        create a snapshot_t* and store it in
 495        object(object-id)->p_private, then unlock and signal the
 496        waiting object.
 497      */
 498     if( val.psz_string && !strncmp( val.psz_string, "object:", 7 ) )
 499     {
 500         int i_id;
 501         vlc_object_t* p_dest;
 502         block_t *p_block;
 503         snapshot_t *p_snapshot;
 504         int i_size;
 505
 506         /* Destination object-id is following object: */
 507         i_id = atoi( &val.psz_string[7] );
 508         p_dest = ( vlc_object_t* )vlc_current_object( i_id );
 509         if( !p_dest )
 510         {
 511             msg_Err( p_vout, "Cannot find calling object" );
 512             image_HandlerDelete( p_image );
 513             return VLC_EGENERIC;
 514         }
 515         /* Object must be locked. We will unlock it once we get the
 516            snapshot and written it to p_private */
 517         p_dest->p_private = NULL;
 518
 519         /* Save the snapshot to a memory zone */
 520         fmt_in = p_vout->fmt_in;
 521         fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 522         fmt_out.i_width = var_GetInteger( p_vout, "snapshot-width" );
 523         fmt_out.i_height = var_GetInteger( p_vout, "snapshot-height" );
 524         fmt_out.i_chroma = VLC_FOURCC( 'p','n','g',' ' );
 525
 526         p_block = ( block_t* ) image_Write( p_image, p_pic, &fmt_in, &fmt_out );
 527         if( !p_block )
 528         {
 529             msg_Err( p_vout, "Could not get snapshot" );
 530             image_HandlerDelete( p_image );
 531             vlc_cond_signal( &p_dest->object_wait );
 532             vlc_object_release( p_dest );
 533             return VLC_EGENERIC;
 534         }
 535
 536         /* Copy the p_block data to a snapshot structure */
 537         /* FIXME: get the timestamp */
 538         p_snapshot = ( snapshot_t* ) malloc( sizeof( snapshot_t ) );
 539         if( !p_snapshot )
 540         {
 541             block_Release( p_block );
 542             image_HandlerDelete( p_image );
 543             vlc_cond_signal( &p_dest->object_wait );
 544             vlc_object_release( p_dest );
 545             return VLC_ENOMEM;
 546         }
 547
 548         i_size = p_block->i_buffer;
 549
 550         p_snapshot->i_width = fmt_out.i_width;
 551         p_snapshot->i_height = fmt_out.i_height;
 552         p_snapshot->i_datasize = i_size;
 553         p_snapshot->date = p_block->i_pts; /* FIXME ?? */
 554         p_snapshot->p_data = ( char* ) malloc( i_size );
 555         if( !p_snapshot->p_data )
 556         {
 557             block_Release( p_block );
 558             free( p_snapshot );
 559             image_HandlerDelete( p_image );
 560             vlc_cond_signal( &p_dest->object_wait );
 561             vlc_object_release( p_dest );
 562             return VLC_ENOMEM;
 563         }
 564         memcpy( p_snapshot->p_data, p_block->p_buffer, p_block->i_buffer );
 565
 566         p_dest->p_private = p_snapshot;
 567
 568         block_Release( p_block );
 569
 570         /* Unlock the object */
 571         vlc_cond_signal( &p_dest->object_wait );
 572         vlc_object_release( p_dest );
 573
 574         image_HandlerDelete( p_image );
 575         return VLC_SUCCESS;
 576     }
 577
 578 #if defined(__APPLE__) || defined(SYS_BEOS)
 579     if( !val.psz_string && p_vout->p_libvlc->psz_homedir )
 580     {
 581         if( asprintf( &val.psz_string, "%s/Desktop",
 582                       p_vout->p_libvlc->psz_homedir ) == -1 )
 583             val.psz_string = NULL;
 584     }
 585
 586 #elif defined(WIN32) && !defined(UNDER_CE)
 587     if( !val.psz_string && p_vout->p_libvlc->psz_homedir )
 588     {
 589         /* Get the My Pictures folder path */
 590
 591         char *p_mypicturesdir = NULL;
 592         typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
 593                                                    LPWSTR );
 594         #ifndef CSIDL_FLAG_CREATE
 595         #   define CSIDL_FLAG_CREATE 0x8000
 596         #endif
 597         #ifndef CSIDL_MYPICTURES
 598         #   define CSIDL_MYPICTURES 0x27
 599         #endif
 600         #ifndef SHGFP_TYPE_CURRENT
 601         #   define SHGFP_TYPE_CURRENT 0
 602         #endif
 603
 604         HINSTANCE shfolder_dll;
 605         SHGETFOLDERPATH SHGetFolderPath ;
 606
 607         /* load the shfolder dll to retrieve SHGetFolderPath */
 608         if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
 609         {
 610            wchar_t wdir[PATH_MAX];
 611            SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
 612                                                       _T("SHGetFolderPathW") );
 613             if ((SHGetFolderPath != NULL )
 614              && SUCCEEDED (SHGetFolderPath (NULL,
 615                                            CSIDL_MYPICTURES | CSIDL_FLAG_CREATE,
 616                                            NULL, SHGFP_TYPE_CURRENT,
 617                                            wdir)))
 618                 p_mypicturesdir = FromWide (wdir);
 619
 620             FreeLibrary( shfolder_dll );
 621         }
 622
 623         if( p_mypicturesdir == NULL )
 624         {
 625             if( asprintf( &val.psz_string, "%s",
 626                           p_vout->p_libvlc->psz_homedir ) == -1 )
 627                 val.psz_string = NULL;
 628         }
 629         else
 630         {
 631             if( asprintf( &val.psz_string, p_mypicturesdir ) == -1 )
 632                 val.psz_string = NULL;
 633             free( p_mypicturesdir );
 634         }
 635     }
 636
 637 #else
 638     /* XXX: This saves in the data directory. Shouldn't we try saving
 639      *      to psz_homedir/Desktop or something nicer ? */
 640     if( !val.psz_string && p_vout->p_libvlc->psz_datadir )
 641     {
 642         if( asprintf( &val.psz_string, "%s",
 643                       p_vout->p_libvlc->psz_datadir ) == -1 )
 644             val.psz_string = NULL;
 645     }
 646 #endif
 647
 648     if( !val.psz_string )
 649     {
 650         msg_Err( p_vout, "no path specified for snapshots" );
 651         return VLC_EGENERIC;
 652     }
 653     var_Get( p_vout, "snapshot-format", &format );
 654     if( !format.psz_string || !*format.psz_string )
 655     {
 656         free( format.psz_string );
 657         format.psz_string = strdup( "png" );
 658     }
 659
 660     /*
 661      * Did the user specify a directory? If not, path = NULL.
 662      */
 663     path = utf8_opendir ( (const char *)val.psz_string  );
 664     if( path != NULL )
 665     {
 666         char *psz_prefix = var_GetNonEmptyString( p_vout, "snapshot-prefix" );
 667         if( psz_prefix == NULL )
 668             psz_prefix = strdup( "vlcsnap-" );
 669         else
 670         {
 671             char *psz_tmp = str_format( p_vout, psz_prefix );
 672             filename_sanitize( psz_tmp );
 673             free( psz_prefix );
 674             psz_prefix = psz_tmp;
 675         }
 676
 677         closedir( path );
 678         if( var_GetBool( p_vout, "snapshot-sequential" ) == true )
 679         {
 680             int i_num = var_GetInteger( p_vout, "snapshot-num" );
 681             FILE *p_file;
 682             do
 683             {
 684                 if( asprintf( &psz_filename, "%s" DIR_SEP "%s%05d.%s",
 685                               val.psz_string, psz_prefix, i_num++,
 686                               format.psz_string ) == -1 )
 687                 {
 688                     msg_Err( p_vout, "could not create snapshot" );
 689                     image_HandlerDelete( p_image );
 690                     return VLC_EGENERIC;
 691                 }
 692             }
 693             while( ( p_file = utf8_fopen( psz_filename, "r" ) ) && !fclose( p_file ) );
 694             var_SetInteger( p_vout, "snapshot-num", i_num );
 695         }
 696         else
 697         {
 698             if( asprintf( &psz_filename, "%s" DIR_SEP "%s%u.%s",
 699                           val.psz_string, psz_prefix,
 700                           (unsigned int)(p_pic->date / 100000) & 0xFFFFFF,
 701                           format.psz_string ) == -1 )
 702             {
 703                 msg_Err( p_vout, "could not create snapshot" );
 704                 image_HandlerDelete( p_image );
 705                 return VLC_EGENERIC;
 706             }
 707         }
 708
 709         free( psz_prefix );
 710     }
 711     else // The user specified a full path name (including file name)
 712     {
 713         psz_filename = str_format( p_vout, val.psz_string );
 714         path_sanitize( psz_filename );
 715     }
 716
 717     free( val.psz_string );
 718     free( format.psz_string );
 719
 720     fmt_out.i_width = var_GetInteger( p_vout, "snapshot-width" );
 721     fmt_out.i_height = var_GetInteger( p_vout, "snapshot-height" );
 722
 723     fmt_in = p_vout->fmt_in;
 724
 725     if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
 726     {
 727         fmt_out.i_width = (fmt_in.i_width * fmt_out.i_height) / fmt_in.i_height;
 728     }
 729     else if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
 730     {
 731         fmt_out.i_height = (fmt_in.i_height * fmt_out.i_width) / fmt_in.i_width;
 732     }
 733     else
 734     {
 735         fmt_out.i_width = fmt_in.i_width;
 736         fmt_out.i_height = fmt_in.i_height;
 737     }
 738
 739     /* Save the snapshot */
 740     fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 741     i_ret = image_WriteUrl( p_image, p_pic, &fmt_in, &fmt_out, psz_filename );
 742     if( i_ret != VLC_SUCCESS )
 743     {
 744         msg_Err( p_vout, "could not create snapshot %s", psz_filename );
 745         free( psz_filename );
 746         image_HandlerDelete( p_image );
 747         return VLC_EGENERIC;
 748     }
 749
 750     msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
 751     vout_OSDMessage( VLC_OBJECT( p_vout ), DEFAULT_CHAN,
 752                      "%s", psz_filename );
 753     free( psz_filename );
 754
 755     if( var_GetBool( p_vout, "snapshot-preview" ) )
 756     {
 757         /* Inject a subpicture with the snapshot */
 758         memset( &fmt_out, 0, sizeof(fmt_out) );
 759         fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 760         p_pif = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
 761         image_HandlerDelete( p_image );
 762         if( !p_pif ) return VLC_EGENERIC;
 763
 764         p_subpic = spu_CreateSubpicture( p_vout->p_spu );
 765         if( p_subpic == NULL )
 766         {
 767              p_pif->pf_release( p_pif );
 768              return VLC_EGENERIC;
 769         }
 770
 771         p_subpic->i_channel = 0;
 772         p_subpic->i_start = mdate();
 773         p_subpic->i_stop = mdate() + 4000000;
 774         p_subpic->b_ephemer = true;
 775         p_subpic->b_fade = true;
 776         p_subpic->i_original_picture_width = p_vout->render.i_width * 4;
 777         p_subpic->i_original_picture_height = p_vout->render.i_height * 4;
 778
 779         p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
 780         vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture,
 781                           p_pif );
 782         p_pif->pf_release( p_pif );
 783
 784         spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
 785     }
 786     else
 787     {
 788         image_HandlerDelete( p_image );
 789     }
 790
 791     return VLC_SUCCESS;
 792 }
 793
 794 /*****************************************************************************
 795  * Handle filters
 796  *****************************************************************************/
 797
 798 void vout_EnableFilter( vout_thread_t *p_vout, char *psz_name,
 799                         bool b_add, bool b_setconfig )
 800 {
 801     char *psz_parser;
 802     char *psz_string = config_GetPsz( p_vout, "vout-filter" );
 803
 804     /* Todo : Use some generic chain manipulation functions */
 805     if( !psz_string ) psz_string = strdup("");
 806
 807     psz_parser = strstr( psz_string, psz_name );
 808     if( b_add )
 809     {
 810         if( !psz_parser )
 811         {
 812             psz_parser = psz_string;
 813             if( asprintf( &psz_string, (*psz_string) ? "%s:%s" : "%s%s",
 814                           psz_string, psz_name ) == -1 )
 815             {
 816                 free( psz_parser );
 817                 return;
 818             }
 819             free( psz_parser );
 820         }
 821         else
 822             return;
 823     }
 824     else
 825     {
 826         if( psz_parser )
 827         {
 828             memmove( psz_parser, psz_parser + strlen(psz_name) +
 829                             (*(psz_parser + strlen(psz_name)) == ':' ? 1 : 0 ),
 830                             strlen(psz_parser + strlen(psz_name)) + 1 );
 831
 832             /* Remove trailing : : */
 833             if( *(psz_string+strlen(psz_string ) -1 ) == ':' )
 834             {
 835                 *(psz_string+strlen(psz_string ) -1 ) = '\0';
 836             }
 837          }
 838          else
 839          {
 840              free( psz_string );
 841              return;
 842          }
 843     }
 844     if( b_setconfig )
 845         config_PutPsz( p_vout, "vout-filter", psz_string );
 846
 847     var_SetString( p_vout, "vout-filter", psz_string );
 848     free( psz_string );
 849 }
 850
 851 /*****************************************************************************
 852  * vout_ControlDefault: default methods for video output control.
 853  *****************************************************************************/
 854 int vout_vaControlDefault( vout_thread_t *p_vout, int i_query, va_list args )
 855 {
 856     (void)args;
 857     switch( i_query )
 858     {
 859     case VOUT_REPARENT:
 860     case VOUT_CLOSE:
 861         if( p_vout->p_parent_intf )
 862         {
 863             vlc_object_release( p_vout->p_parent_intf );
 864             p_vout->p_parent_intf = NULL;
 865         }
 866         return VLC_SUCCESS;
 867         break;
 868
 869     case VOUT_SNAPSHOT:
 870         p_vout->b_snapshot = true;
 871         return VLC_SUCCESS;
 872         break;
 873
 874     default:
 875         msg_Dbg( p_vout, "control query not supported" );
 876         return VLC_EGENERIC;
 877     }
 878 }
 879
 880 /*****************************************************************************
 881  * InitWindowSize: find the initial dimensions the video window should have.
 882  *****************************************************************************
 883  * This function will check the "width", "height" and "zoom" config options and
 884  * will calculate the size that the video window should have.
 885  *****************************************************************************/
 886 static void InitWindowSize( vout_thread_t *p_vout, unsigned *pi_width,
 887                             unsigned *pi_height )
 888 {
 889     vlc_value_t val;
 890     int i_width, i_height;
 891     uint64_t ll_zoom;
 892
 893 #define FP_FACTOR 1000                             /* our fixed point factor */
 894
 895     var_Get( p_vout, "width", &val );
 896     i_width = val.i_int;
 897     var_Get( p_vout, "height", &val );
 898     i_height = val.i_int;
 899     var_Get( p_vout, "zoom", &val );
 900     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
 901
 902     if( i_width > 0 && i_height > 0)
 903     {
 904         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 905         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 906         goto initwsize_end;
 907     }
 908     else if( i_width > 0 )
 909     {
 910         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 911         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 912             p_vout->fmt_in.i_sar_den * i_width / p_vout->fmt_in.i_sar_num /
 913             FP_FACTOR / p_vout->fmt_in.i_visible_width );
 914         goto initwsize_end;
 915     }
 916     else if( i_height > 0 )
 917     {
 918         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 919         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 920             p_vout->fmt_in.i_sar_num * i_height / p_vout->fmt_in.i_sar_den /
 921             FP_FACTOR / p_vout->fmt_in.i_visible_height );
 922         goto initwsize_end;
 923     }
 924
 925     if( p_vout->fmt_in.i_sar_num == 0 || p_vout->fmt_in.i_sar_den == 0 ) {
 926         msg_Warn( p_vout, "fucked up aspect" );
 927         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom / FP_FACTOR );
 928         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom /FP_FACTOR);
 929     }
 930     else if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 931     {
 932         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 933             p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den / FP_FACTOR );
 934         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom
 935             / FP_FACTOR );
 936     }
 937     else
 938     {
 939         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom
 940             / FP_FACTOR );
 941         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 942             p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num / FP_FACTOR );
 943     }
 944
 945 initwsize_end:
 946     msg_Dbg( p_vout, "window size: %dx%d", p_vout->i_window_width,
 947              p_vout->i_window_height );
 948
 949 #undef FP_FACTOR
 950 }
 951
 952 /*****************************************************************************
 953  * Object variables callbacks
 954  *****************************************************************************/
 955 static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
 956                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 957 {
 958     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 959     (void)psz_cmd; (void)oldval; (void)newval; (void)p_data;
 960     InitWindowSize( p_vout, &p_vout->i_window_width,
 961                     &p_vout->i_window_height );
 962     vout_Control( p_vout, VOUT_SET_SIZE, p_vout->i_window_width,
 963                   p_vout->i_window_height );
 964     return VLC_SUCCESS;
 965 }
 966
 967 static int CropCallback( vlc_object_t *p_this, char const *psz_cmd,
 968                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 969 {
 970     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 971     int64_t i_aspect_num, i_aspect_den;
 972     unsigned int i_width, i_height;
 973
 974     (void)oldval; (void)p_data;
 975
 976     /* Restore defaults */
 977     p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset;
 978     p_vout->fmt_in.i_visible_width = p_vout->fmt_render.i_visible_width;
 979     p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset;
 980     p_vout->fmt_in.i_visible_height = p_vout->fmt_render.i_visible_height;
 981
 982     if( !strcmp( psz_cmd, "crop" ) )
 983     {
 984         char *psz_end = NULL, *psz_parser = strchr( newval.psz_string, ':' );
 985         if( psz_parser )
 986         {
 987             /* We're using the 3:4 syntax */
 988             i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
 989             if( psz_end == newval.psz_string || !i_aspect_num ) goto crop_end;
 990
 991             i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
 992             if( psz_end == psz_parser || !i_aspect_den ) goto crop_end;
 993
 994             i_width = p_vout->fmt_in.i_sar_den*p_vout->fmt_render.i_visible_height *
 995                 i_aspect_num / i_aspect_den / p_vout->fmt_in.i_sar_num;
 996             i_height = p_vout->fmt_render.i_visible_width*p_vout->fmt_in.i_sar_num *
 997                 i_aspect_den / i_aspect_num / p_vout->fmt_in.i_sar_den;
 998
 999             if( i_width < p_vout->fmt_render.i_visible_width )
1000             {
1001                 p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset +
1002                     (p_vout->fmt_render.i_visible_width - i_width) / 2;
1003                 p_vout->fmt_in.i_visible_width = i_width;
1004             }
1005             else
1006             {
1007                 p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset +
1008                     (p_vout->fmt_render.i_visible_height - i_height) / 2;
1009                 p_vout->fmt_in.i_visible_height = i_height;
1010             }
1011         }
1012         else
1013         {
1014             psz_parser = strchr( newval.psz_string, 'x' );
1015             if( psz_parser )
1016             {
1017                 /* Maybe we're using the <width>x<height>+<left>+<top> syntax */
1018                 unsigned int i_crop_width, i_crop_height, i_crop_top, i_crop_left;
1019
1020                 i_crop_width = strtol( newval.psz_string, &psz_end, 10 );
1021                 if( psz_end != psz_parser ) goto crop_end;
1022
1023                 psz_parser = strchr( ++psz_end, '+' );
1024                 i_crop_height = strtol( psz_end, &psz_end, 10 );
1025                 if( psz_end != psz_parser ) goto crop_end;
1026
1027                 psz_parser = strchr( ++psz_end, '+' );
1028                 i_crop_left = strtol( psz_end, &psz_end, 10 );
1029                 if( psz_end != psz_parser ) goto crop_end;
1030
1031                 psz_end++;
1032                 i_crop_top = strtol( psz_end, &psz_end, 10 );
1033                 if( *psz_end != '\0' ) goto crop_end;
1034
1035                 i_width = i_crop_width;
1036                 p_vout->fmt_in.i_visible_width = i_width;
1037
1038                 i_height = i_crop_height;
1039                 p_vout->fmt_in.i_visible_height = i_height;
1040
1041                 p_vout->fmt_in.i_x_offset = i_crop_left;
1042                 p_vout->fmt_in.i_y_offset = i_crop_top;
1043             }
1044             else
1045             {
1046                 /* Maybe we're using the <left>+<top>+<right>+<bottom> syntax */
1047                 unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
1048
1049                 psz_parser = strchr( newval.psz_string, '+' );
1050                 i_crop_left = strtol( newval.psz_string, &psz_end, 10 );
1051                 if( psz_end != psz_parser ) goto crop_end;
1052
1053                 psz_parser = strchr( ++psz_end, '+' );
1054                 i_crop_top = strtol( psz_end, &psz_end, 10 );
1055                 if( psz_end != psz_parser ) goto crop_end;
1056
1057                 psz_parser = strchr( ++psz_end, '+' );
1058                 i_crop_right = strtol( psz_end, &psz_end, 10 );
1059                 if( psz_end != psz_parser ) goto crop_end;
1060
1061                 psz_end++;
1062                 i_crop_bottom = strtol( psz_end, &psz_end, 10 );
1063                 if( *psz_end != '\0' ) goto crop_end;
1064
1065                 i_width = p_vout->fmt_render.i_visible_width
1066                           - i_crop_left - i_crop_right;
1067                 p_vout->fmt_in.i_visible_width = i_width;
1068
1069                 i_height = p_vout->fmt_render.i_visible_height
1070                            - i_crop_top - i_crop_bottom;
1071                 p_vout->fmt_in.i_visible_height = i_height;
1072
1073                 p_vout->fmt_in.i_x_offset = i_crop_left;
1074                 p_vout->fmt_in.i_y_offset = i_crop_top;
1075             }
1076         }
1077     }
1078     else if( !strcmp( psz_cmd, "crop-top" )
1079           || !strcmp( psz_cmd, "crop-left" )
1080           || !strcmp( psz_cmd, "crop-bottom" )
1081           || !strcmp( psz_cmd, "crop-right" ) )
1082     {
1083         unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
1084
1085         i_crop_top = var_GetInteger( p_vout, "crop-top" );
1086         i_crop_left = var_GetInteger( p_vout, "crop-left" );
1087         i_crop_right = var_GetInteger( p_vout, "crop-right" );
1088         i_crop_bottom = var_GetInteger( p_vout, "crop-bottom" );
1089
1090         i_width = p_vout->fmt_render.i_visible_width
1091                   - i_crop_left - i_crop_right;
1092         p_vout->fmt_in.i_visible_width = i_width;
1093
1094         i_height = p_vout->fmt_render.i_visible_height
1095                    - i_crop_top - i_crop_bottom;
1096         p_vout->fmt_in.i_visible_height = i_height;
1097
1098         p_vout->fmt_in.i_x_offset = i_crop_left;
1099         p_vout->fmt_in.i_y_offset = i_crop_top;
1100     }
1101
1102  crop_end:
1103     InitWindowSize( p_vout, &p_vout->i_window_width,
1104                     &p_vout->i_window_height );
1105
1106     p_vout->i_changes |= VOUT_CROP_CHANGE;
1107
1108     msg_Dbg( p_vout, "cropping picture %ix%i to %i,%i,%ix%i",
1109              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
1110              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
1111              p_vout->fmt_in.i_visible_width,
1112              p_vout->fmt_in.i_visible_height );
1113
1114     var_SetVoid( p_vout, "crop-update" );
1115
1116     return VLC_SUCCESS;
1117 }
1118
1119 static int AspectCallback( vlc_object_t *p_this, char const *psz_cmd,
1120                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
1121 {
1122     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1123     unsigned int i_aspect_num, i_aspect_den, i_sar_num, i_sar_den;
1124     vlc_value_t val;
1125
1126     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
1127     (void)psz_cmd; (void)oldval; (void)p_data;
1128
1129     /* Restore defaults */
1130     p_vout->fmt_in.i_sar_num = p_vout->fmt_render.i_sar_num;
1131     p_vout->fmt_in.i_sar_den = p_vout->fmt_render.i_sar_den;
1132     p_vout->fmt_in.i_aspect = p_vout->fmt_render.i_aspect;
1133     p_vout->render.i_aspect = p_vout->fmt_render.i_aspect;
1134
1135     if( !psz_parser ) goto aspect_end;
1136
1137     i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
1138     if( psz_end == newval.psz_string || !i_aspect_num ) goto aspect_end;
1139
1140     i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
1141     if( psz_end == psz_parser || !i_aspect_den ) goto aspect_end;
1142
1143     i_sar_num = i_aspect_num * p_vout->fmt_render.i_visible_height;
1144     i_sar_den = i_aspect_den * p_vout->fmt_render.i_visible_width;
1145     vlc_ureduce( &i_sar_num, &i_sar_den, i_sar_num, i_sar_den, 0 );
1146     p_vout->fmt_in.i_sar_num = i_sar_num;
1147     p_vout->fmt_in.i_sar_den = i_sar_den;
1148     p_vout->fmt_in.i_aspect = i_aspect_num * VOUT_ASPECT_FACTOR / i_aspect_den;
1149     p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
1150
1151  aspect_end:
1152     if( p_vout->i_par_num && p_vout->i_par_den )
1153     {
1154         p_vout->fmt_in.i_sar_num *= p_vout->i_par_den;
1155         p_vout->fmt_in.i_sar_den *= p_vout->i_par_num;
1156         p_vout->fmt_in.i_aspect = p_vout->fmt_in.i_aspect *
1157             p_vout->i_par_den / p_vout->i_par_num;
1158         p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
1159     }
1160
1161     p_vout->i_changes |= VOUT_ASPECT_CHANGE;
1162
1163     vlc_ureduce( &i_aspect_num, &i_aspect_den,
1164                  p_vout->fmt_in.i_aspect, VOUT_ASPECT_FACTOR, 0 );
1165     msg_Dbg( p_vout, "new aspect-ratio %i:%i, sample aspect-ratio %i:%i",
1166              i_aspect_num, i_aspect_den,
1167              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
1168
1169     var_Get( p_vout, "crop", &val );
1170     return CropCallback( p_this, "crop", val, val, 0 );
1171 }
1172
1173 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
1174                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
1175 {
1176     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1177     playlist_t *p_playlist = pl_Yield( p_this );
1178     vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, newval.b_bool );
1179     (void)psz_cmd; (void)oldval; (void)p_data;
1180
1181     /* Modify playlist as well because the vout might have to be restarted */
1182     var_Create( p_playlist, "video-on-top", VLC_VAR_BOOL );
1183     var_Set( p_playlist, "video-on-top", newval );
1184
1185     pl_Release( p_this );
1186     return VLC_SUCCESS;
1187 }
1188
1189 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
1190                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1191 {
1192     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1193     vlc_value_t val;
1194     playlist_t *p_playlist = pl_Yield( p_this );
1195     (void)psz_cmd; (void)oldval; (void)p_data;
1196
1197     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
1198
1199     /* Modify playlist as well because the vout might have to be restarted */
1200     var_Create( p_playlist, "fullscreen", VLC_VAR_BOOL );
1201     var_Set( p_playlist, "fullscreen", newval );
1202     pl_Release( p_playlist );
1203
1204     val.b_bool = true;
1205     var_Set( p_vout, "intf-change", val );
1206     return VLC_SUCCESS;
1207 }
1208
1209 static int SnapshotCallback( vlc_object_t *p_this, char const *psz_cmd,
1210                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1211 {
1212     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1213     VLC_UNUSED(newval); VLC_UNUSED(p_data);
1214     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1215     vout_Control( p_vout, VOUT_SNAPSHOT );
1216     return VLC_SUCCESS;
1217 }
1218
1219 static int TitleShowCallback( vlc_object_t *p_this, char const *psz_cmd,
1220                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1221 {
1222     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1223     VLC_UNUSED(p_data);
1224     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1225     p_vout->b_title_show = newval.b_bool;
1226     return VLC_SUCCESS;
1227 }
1228
1229 static int TitleTimeoutCallback( vlc_object_t *p_this, char const *psz_cmd,
1230                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1231 {
1232     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_data);
1233     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1234     p_vout->i_title_timeout = (mtime_t) newval.i_int;
1235     return VLC_SUCCESS;
1236 }
1237
1238 static int TitlePositionCallback( vlc_object_t *p_this, char const *psz_cmd,
1239                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1240 {
1241     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1242     VLC_UNUSED(p_data);
1243     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1244     p_vout->i_title_position = newval.i_int;
1245     return VLC_SUCCESS;
1246 }