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_common.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 #if 0
 111     /* FIXME:
 112      * This code is utter crap w.r.t. threading. And it has always been.
 113      * First, one cannot invoke callbacks from another thread's object.
 114      * Not without a well-defined locking convention.
 115      *
 116      * Second, this would need to "wait" for the interface to be ready.
 117      * Otherwise, the availability of the embded window would become
 118      * time-dependent.
 119      *
 120      * In the past, this kind of things worked by accident. This time is over.
 121      * -- Courmisch, 12 Jun 2008
 122      */
 123     /* Find if the main interface supports embedding */
 124     p_list = vlc_list_find( p_vout, VLC_OBJECT_INTF, FIND_ANYWHERE );
 125     if( !p_list ) return NULL;
 126
 127     for( i = 0; i < p_list->i_count; i++ )
 128     {
 129         p_intf = (intf_thread_t *)p_list->p_values[i].p_object;
 130         if( p_intf->pf_request_window ) break;
 131         p_intf = NULL;
 132     }
 133
 134     if( !p_intf )
 135     {
 136         vlc_list_release( p_list );
 137         return NULL;
 138     }
 139
 140     vlc_object_yield( p_intf );
 141     vlc_list_release( p_list );
 142
 143     p_window = p_intf->pf_request_window( p_intf, p_vout, pi_x_hint, pi_y_hint,
 144                                           pi_width_hint, pi_height_hint );
 145
 146     if( !p_window ) vlc_object_release( p_intf );
 147     else p_vout->p_parent_intf = p_intf;
 148
 149     return p_window;
 150 #else
 151    return NULL;
 152 #endif
 153 }
 154
 155 void vout_ReleaseWindow( vout_thread_t *p_vout, void *p_window )
 156 {
 157     intf_thread_t *p_intf = p_vout->p_parent_intf;
 158
 159     if( !p_intf ) return;
 160
 161     vlc_mutex_lock( &p_intf->object_lock );
 162     if( p_intf->b_dead )
 163     {
 164         vlc_mutex_unlock( &p_intf->object_lock );
 165         return;
 166     }
 167
 168     if( !p_intf->pf_release_window )
 169     {
 170         msg_Err( p_vout, "no pf_release_window");
 171         vlc_mutex_unlock( &p_intf->object_lock );
 172         vlc_object_release( p_intf );
 173         return;
 174     }
 175
 176     p_intf->pf_release_window( p_intf, p_window );
 177
 178     p_vout->p_parent_intf = NULL;
 179     vlc_mutex_unlock( &p_intf->object_lock );
 180     vlc_object_release( p_intf );
 181 }
 182
 183 int vout_ControlWindow( vout_thread_t *p_vout, void *p_window,
 184                         int i_query, va_list args )
 185 {
 186     intf_thread_t *p_intf = p_vout->p_parent_intf;
 187     int i_ret;
 188
 189     if( !p_intf ) return VLC_EGENERIC;
 190
 191     vlc_mutex_lock( &p_intf->object_lock );
 192     if( p_intf->b_dead )
 193     {
 194         vlc_mutex_unlock( &p_intf->object_lock );
 195         return VLC_EGENERIC;
 196     }
 197
 198     if( !p_intf->pf_control_window )
 199     {
 200         msg_Err( p_vout, "no pf_control_window");
 201         vlc_mutex_unlock( &p_intf->object_lock );
 202         return VLC_EGENERIC;
 203     }
 204
 205     i_ret = p_intf->pf_control_window( p_intf, p_window, i_query, args );
 206     vlc_mutex_unlock( &p_intf->object_lock );
 207     return i_ret;
 208 }
 209
 210 /*****************************************************************************
 211  * vout_IntfInit: called during the vout creation to initialise misc things.
 212  *****************************************************************************/
 213 static const struct
 214 {
 215     double f_value;
 216     const char *psz_label;
 217 } p_zoom_values[] = {
 218     { 0.25, N_("1:4 Quarter") },
 219     { 0.5, N_("1:2 Half") },
 220     { 1, N_("1:1 Original") },
 221     { 2, N_("2:1 Double") },
 222     { 0, NULL } };
 223
 224 static const struct
 225 {
 226     const char *psz_value;
 227     const char *psz_label;
 228 } p_crop_values[] = {
 229     { "", N_("Default") },
 230     { "1:1", "1:1" },
 231     { "4:3", "4:3" },
 232     { "16:9", "16:9" },
 233     { "16:10", "16:10" },
 234     { "5:4", "5:4" },
 235     { "5:3", "5:3" },
 236     { "1.85:1", "1.85:1" },
 237     { "221:100", "2.21:1" },
 238     { "235:100", "2.35:1" },
 239     { "239:100", "2.39:1" },
 240     { NULL, NULL } };
 241
 242 static const struct
 243 {
 244     const char *psz_value;
 245     const char *psz_label;
 246 } p_aspect_ratio_values[] = {
 247     { "", N_("Default") },
 248     { "1:1", "1:1" },
 249     { "4:3", "4:3" },
 250     { "16:9", "16:9" },
 251     { "16:10", "16:10" },
 252     { "221:100", "2.21:1" },
 253     { "5:4", "5:4" },
 254     { NULL, NULL } };
 255
 256 static void AddCustomRatios( vout_thread_t *p_vout, const char *psz_var,
 257                              char *psz_list )
 258 {
 259     if( psz_list && *psz_list )
 260     {
 261         char *psz_cur = psz_list;
 262         char *psz_next;
 263         while( psz_cur && *psz_cur )
 264         {
 265             vlc_value_t val, text;
 266             psz_next = strchr( psz_cur, ',' );
 267             if( psz_next )
 268             {
 269                 *psz_next = '\0';
 270                 psz_next++;
 271             }
 272             val.psz_string = psz_cur;
 273             text.psz_string = psz_cur;
 274             var_Change( p_vout, psz_var, VLC_VAR_ADDCHOICE, &val, &text);
 275             psz_cur = psz_next;
 276         }
 277     }
 278 }
 279
 280 void vout_IntfInit( vout_thread_t *p_vout )
 281 {
 282     vlc_value_t val, text, old_val;
 283     bool b_force_par = false;
 284     char *psz_buf;
 285     int i;
 286
 287     /* Create a few object variables we'll need later on */
 288     var_Create( p_vout, "snapshot-path", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 289     var_Create( p_vout, "snapshot-prefix", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 290     var_Create( p_vout, "snapshot-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 291     var_Create( p_vout, "snapshot-preview", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 292     var_Create( p_vout, "snapshot-sequential",
 293                 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 294     var_Create( p_vout, "snapshot-num", VLC_VAR_INTEGER );
 295     var_SetInteger( p_vout, "snapshot-num", 1 );
 296     var_Create( p_vout, "snapshot-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 297     var_Create( p_vout, "snapshot-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 298
 299     var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 300     var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 301     p_vout->i_alignment = var_CreateGetInteger( p_vout, "align" );
 302
 303     var_Create( p_vout, "video-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 304     var_Create( p_vout, "video-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 305
 306     var_Create( p_vout, "mouse-hide-timeout",
 307                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 308
 309     p_vout->b_title_show = var_CreateGetBool( p_vout, "video-title-show" );
 310     p_vout->i_title_timeout =
 311         (mtime_t)var_CreateGetInteger( p_vout, "video-title-timeout" );
 312     p_vout->i_title_position =
 313         var_CreateGetInteger( p_vout, "video-title-position" );
 314
 315     var_AddCallback( p_vout, "video-title-show", TitleShowCallback, NULL );
 316     var_AddCallback( p_vout, "video-title-timeout", TitleTimeoutCallback, NULL );
 317     var_AddCallback( p_vout, "video-title-position", TitlePositionCallback, NULL );
 318
 319     /* Zoom object var */
 320     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_ISCOMMAND |
 321                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 322
 323     text.psz_string = _("Zoom");
 324     var_Change( p_vout, "zoom", VLC_VAR_SETTEXT, &text, NULL );
 325
 326     var_Get( p_vout, "zoom", &old_val );
 327
 328     for( i = 0; p_zoom_values[i].f_value; i++ )
 329     {
 330         if( old_val.f_float == p_zoom_values[i].f_value )
 331             var_Change( p_vout, "zoom", VLC_VAR_DELCHOICE, &old_val, NULL );
 332         val.f_float = p_zoom_values[i].f_value;
 333         text.psz_string = _( p_zoom_values[i].psz_label );
 334         var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 335     }
 336
 337     var_Set( p_vout, "zoom", old_val ); /* Is this really needed? */
 338
 339     var_AddCallback( p_vout, "zoom", ZoomCallback, NULL );
 340
 341     /* Crop offset vars */
 342     var_Create( p_vout, "crop-left", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 343     var_Create( p_vout, "crop-top", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 344     var_Create( p_vout, "crop-right", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 345     var_Create( p_vout, "crop-bottom", VLC_VAR_INTEGER | VLC_VAR_ISCOMMAND );
 346
 347     var_AddCallback( p_vout, "crop-left", CropCallback, NULL );
 348     var_AddCallback( p_vout, "crop-top", CropCallback, NULL );
 349     var_AddCallback( p_vout, "crop-right", CropCallback, NULL );
 350     var_AddCallback( p_vout, "crop-bottom", CropCallback, NULL );
 351
 352     /* Crop object var */
 353     var_Create( p_vout, "crop", VLC_VAR_STRING | VLC_VAR_ISCOMMAND |
 354                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 355
 356     text.psz_string = _("Crop");
 357     var_Change( p_vout, "crop", VLC_VAR_SETTEXT, &text, NULL );
 358
 359     val.psz_string = (char*)"";
 360     var_Change( p_vout, "crop", VLC_VAR_DELCHOICE, &val, 0 );
 361
 362     for( i = 0; p_crop_values[i].psz_value; i++ )
 363     {
 364         val.psz_string = (char*)p_crop_values[i].psz_value;
 365         text.psz_string = _( p_crop_values[i].psz_label );
 366         var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 367     }
 368
 369     /* update triggered every time the vout's crop parameters are changed */
 370     var_Create( p_vout, "crop-update", VLC_VAR_VOID );
 371
 372     /* Add custom crop ratios */
 373     psz_buf = config_GetPsz( p_vout, "custom-crop-ratios" );
 374     AddCustomRatios( p_vout, "crop", psz_buf );
 375     free( psz_buf );
 376
 377     var_AddCallback( p_vout, "crop", CropCallback, NULL );
 378     var_Get( p_vout, "crop", &old_val );
 379     if( old_val.psz_string && *old_val.psz_string )
 380         var_Change( p_vout, "crop", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 381     free( old_val.psz_string );
 382
 383     /* Monitor pixel aspect-ratio */
 384     var_Create( p_vout, "monitor-par", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 385     var_Get( p_vout, "monitor-par", &val );
 386     if( val.psz_string && *val.psz_string )
 387     {
 388         char *psz_parser = strchr( val.psz_string, ':' );
 389         unsigned int i_aspect_num = 0, i_aspect_den = 0;
 390         float i_aspect = 0;
 391         if( psz_parser )
 392         {
 393             i_aspect_num = strtol( val.psz_string, 0, 10 );
 394             i_aspect_den = strtol( ++psz_parser, 0, 10 );
 395         }
 396         else
 397         {
 398             i_aspect = atof( val.psz_string );
 399             vlc_ureduce( &i_aspect_num, &i_aspect_den,
 400                          i_aspect *VOUT_ASPECT_FACTOR, VOUT_ASPECT_FACTOR, 0 );
 401         }
 402         if( !i_aspect_num || !i_aspect_den ) i_aspect_num = i_aspect_den = 1;
 403
 404         p_vout->i_par_num = i_aspect_num;
 405         p_vout->i_par_den = i_aspect_den;
 406
 407         vlc_ureduce( &p_vout->i_par_num, &p_vout->i_par_den,
 408                      p_vout->i_par_num, p_vout->i_par_den, 0 );
 409
 410         msg_Dbg( p_vout, "overriding monitor pixel aspect-ratio: %i:%i",
 411                  p_vout->i_par_num, p_vout->i_par_den );
 412         b_force_par = true;
 413     }
 414     free( val.psz_string );
 415
 416     /* Aspect-ratio object var */
 417     var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING | VLC_VAR_ISCOMMAND |
 418                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 419
 420     text.psz_string = _("Aspect-ratio");
 421     var_Change( p_vout, "aspect-ratio", VLC_VAR_SETTEXT, &text, NULL );
 422
 423     val.psz_string = (char*)"";
 424     var_Change( p_vout, "aspect-ratio", VLC_VAR_DELCHOICE, &val, 0 );
 425
 426     for( i = 0; p_aspect_ratio_values[i].psz_value; i++ )
 427     {
 428         val.psz_string = (char*)p_aspect_ratio_values[i].psz_value;
 429         text.psz_string = _( p_aspect_ratio_values[i].psz_label );
 430         var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 431     }
 432
 433     /* Add custom aspect ratios */
 434     psz_buf = config_GetPsz( p_vout, "custom-aspect-ratios" );
 435     AddCustomRatios( p_vout, "aspect-ratio", psz_buf );
 436     free( psz_buf );
 437
 438     var_AddCallback( p_vout, "aspect-ratio", AspectCallback, NULL );
 439     var_Get( p_vout, "aspect-ratio", &old_val );
 440     if( (old_val.psz_string && *old_val.psz_string) || b_force_par )
 441         var_Change( p_vout, "aspect-ratio", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 442     free( old_val.psz_string );
 443
 444     /* Initialize the dimensions of the video window */
 445     InitWindowSize( p_vout, &p_vout->i_window_width,
 446                     &p_vout->i_window_height );
 447
 448     /* Add a variable to indicate if the window should be on top of others */
 449     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT
 450                 | VLC_VAR_ISCOMMAND );
 451     text.psz_string = _("Always on top");
 452     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 453     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 454
 455     /* Add a variable to indicate whether we want window decoration or not */
 456     var_Create( p_vout, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 457
 458     /* Add a fullscreen variable */
 459     if( var_CreateGetBoolCommand( p_vout, "fullscreen" ) )
 460     {
 461         /* user requested fullscreen */
 462         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 463     }
 464     text.psz_string = _("Fullscreen");
 465     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 466     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 467
 468     /* Add a snapshot variable */
 469     var_Create( p_vout, "video-snapshot", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
 470     text.psz_string = _("Snapshot");
 471     var_Change( p_vout, "video-snapshot", VLC_VAR_SETTEXT, &text, NULL );
 472     var_AddCallback( p_vout, "video-snapshot", SnapshotCallback, NULL );
 473
 474     /* Mouse coordinates */
 475     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 476     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 477     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 478     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 479     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 480
 481     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 482     var_SetBool( p_vout, "intf-change", true );
 483 }
 484
 485 /*****************************************************************************
 486  * vout_Snapshot: generates a snapshot.
 487  *****************************************************************************/
 488 int vout_Snapshot( vout_thread_t *p_vout, picture_t *p_pic )
 489 {
 490     image_handler_t *p_image = image_HandlerCreate( p_vout );
 491     video_format_t fmt_in, fmt_out;
 492     char *psz_filename = NULL;
 493     subpicture_t *p_subpic;
 494     picture_t *p_pif;
 495     vlc_value_t val, format;
 496     DIR *path;
 497     int i_ret;
 498
 499     memset( &fmt_in, 0, sizeof(video_format_t) );
 500     memset( &fmt_out, 0, sizeof(video_format_t) );
 501
 502     var_Get( p_vout, "snapshot-path", &val );
 503     if( val.psz_string && !*val.psz_string )
 504     {
 505         free( val.psz_string );
 506         val.psz_string = 0;
 507     }
 508
 509     /* Embedded snapshot : if snapshot-path == object:object-id, then
 510        create a snapshot_t* and store it in
 511        object(object-id)->p_private, then unlock and signal the
 512        waiting object.
 513      */
 514     if( val.psz_string && !strncmp( val.psz_string, "object:", 7 ) )
 515     {
 516         int i_id;
 517         vlc_object_t* p_dest;
 518         block_t *p_block;
 519         snapshot_t *p_snapshot;
 520         int i_size;
 521
 522         /* Destination object-id is following object: */
 523         i_id = atoi( &val.psz_string[7] );
 524         p_dest = ( vlc_object_t* )vlc_object_get( i_id );
 525         if( !p_dest )
 526         {
 527             msg_Err( p_vout, "Cannot find calling object" );
 528             image_HandlerDelete( p_image );
 529             return VLC_EGENERIC;
 530         }
 531         /* Object must be locked. We will unlock it once we get the
 532            snapshot and written it to p_private */
 533         p_dest->p_private = NULL;
 534
 535         /* Save the snapshot to a memory zone */
 536         fmt_in = p_vout->fmt_in;
 537         fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 538         fmt_out.i_width = var_GetInteger( p_vout, "snapshot-width" );
 539         fmt_out.i_height = var_GetInteger( p_vout, "snapshot-height" );
 540         fmt_out.i_chroma = VLC_FOURCC( 'p','n','g',' ' );
 541
 542         p_block = ( block_t* ) image_Write( p_image, p_pic, &fmt_in, &fmt_out );
 543         if( !p_block )
 544         {
 545             msg_Err( p_vout, "Could not get snapshot" );
 546             image_HandlerDelete( p_image );
 547             vlc_cond_signal( &p_dest->object_wait );
 548             vlc_object_release( p_dest );
 549             return VLC_EGENERIC;
 550         }
 551
 552         /* Copy the p_block data to a snapshot structure */
 553         /* FIXME: get the timestamp */
 554         p_snapshot = ( snapshot_t* ) malloc( sizeof( snapshot_t ) );
 555         if( !p_snapshot )
 556         {
 557             block_Release( p_block );
 558             image_HandlerDelete( p_image );
 559             vlc_cond_signal( &p_dest->object_wait );
 560             vlc_object_release( p_dest );
 561             return VLC_ENOMEM;
 562         }
 563
 564         i_size = p_block->i_buffer;
 565
 566         p_snapshot->i_width = fmt_out.i_width;
 567         p_snapshot->i_height = fmt_out.i_height;
 568         p_snapshot->i_datasize = i_size;
 569         p_snapshot->date = p_block->i_pts; /* FIXME ?? */
 570         p_snapshot->p_data = ( char* ) malloc( i_size );
 571         if( !p_snapshot->p_data )
 572         {
 573             block_Release( p_block );
 574             free( p_snapshot );
 575             image_HandlerDelete( p_image );
 576             vlc_cond_signal( &p_dest->object_wait );
 577             vlc_object_release( p_dest );
 578             return VLC_ENOMEM;
 579         }
 580         memcpy( p_snapshot->p_data, p_block->p_buffer, p_block->i_buffer );
 581
 582         p_dest->p_private = p_snapshot;
 583
 584         block_Release( p_block );
 585
 586         /* Unlock the object */
 587         vlc_cond_signal( &p_dest->object_wait );
 588         vlc_object_release( p_dest );
 589
 590         image_HandlerDelete( p_image );
 591         return VLC_SUCCESS;
 592     }
 593
 594 #if defined(__APPLE__) || defined(SYS_BEOS)
 595     if( !val.psz_string )
 596     {
 597         if( asprintf( &val.psz_string, "%s/Desktop",
 598                       config_GetHomeDir() ) == -1 )
 599             val.psz_string = NULL;
 600     }
 601
 602 #elif defined(WIN32) && !defined(UNDER_CE)
 603     if( !val.psz_string )
 604     {
 605         /* Get the My Pictures folder path */
 606
 607         char *p_mypicturesdir = NULL;
 608         typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
 609                                                    LPWSTR );
 610         #ifndef CSIDL_FLAG_CREATE
 611         #   define CSIDL_FLAG_CREATE 0x8000
 612         #endif
 613         #ifndef CSIDL_MYPICTURES
 614         #   define CSIDL_MYPICTURES 0x27
 615         #endif
 616         #ifndef SHGFP_TYPE_CURRENT
 617         #   define SHGFP_TYPE_CURRENT 0
 618         #endif
 619
 620         HINSTANCE shfolder_dll;
 621         SHGETFOLDERPATH SHGetFolderPath ;
 622
 623         /* load the shfolder dll to retrieve SHGetFolderPath */
 624         if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
 625         {
 626            wchar_t wdir[PATH_MAX];
 627            SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
 628                                                       _T("SHGetFolderPathW") );
 629             if ((SHGetFolderPath != NULL )
 630              && SUCCEEDED (SHGetFolderPath (NULL,
 631                                            CSIDL_MYPICTURES | CSIDL_FLAG_CREATE,
 632                                            NULL, SHGFP_TYPE_CURRENT,
 633                                            wdir)))
 634                 p_mypicturesdir = FromWide (wdir);
 635
 636             FreeLibrary( shfolder_dll );
 637         }
 638
 639         if( p_mypicturesdir == NULL )
 640         {
 641             if( asprintf( &val.psz_string, "%s", config_GetHomeDir() ) == -1 )
 642                 val.psz_string = NULL;
 643         }
 644         else
 645         {
 646             if( asprintf( &val.psz_string, p_mypicturesdir ) == -1 )
 647                 val.psz_string = NULL;
 648             free( p_mypicturesdir );
 649         }
 650     }
 651
 652 #else
 653     /* XXX: This saves in the data directory. Shouldn't we try saving
 654      *      to psz_homedir/Desktop or something nicer ? */
 655     char *psz_datadir = config_GetUserDataDir();
 656     if( !val.psz_string && psz_datadir )
 657     {
 658         if( asprintf( &val.psz_string, "%s", psz_datadir ) == -1 )
 659             val.psz_string = NULL;
 660     }
 661     free( psz_datadir );
 662 #endif
 663
 664     if( !val.psz_string )
 665     {
 666         msg_Err( p_vout, "no path specified for snapshots" );
 667         image_HandlerDelete( p_image );
 668         return VLC_EGENERIC;
 669     }
 670     var_Get( p_vout, "snapshot-format", &format );
 671     if( !format.psz_string || !*format.psz_string )
 672     {
 673         free( format.psz_string );
 674         format.psz_string = strdup( "png" );
 675     }
 676
 677     /*
 678      * Did the user specify a directory? If not, path = NULL.
 679      */
 680     path = utf8_opendir ( (const char *)val.psz_string  );
 681     if( path != NULL )
 682     {
 683         char *psz_prefix = var_GetNonEmptyString( p_vout, "snapshot-prefix" );
 684         if( psz_prefix == NULL )
 685             psz_prefix = strdup( "vlcsnap-" );
 686         else
 687         {
 688             char *psz_tmp = str_format( p_vout, psz_prefix );
 689             filename_sanitize( psz_tmp );
 690             free( psz_prefix );
 691             psz_prefix = psz_tmp;
 692         }
 693
 694         closedir( path );
 695         if( var_GetBool( p_vout, "snapshot-sequential" ) == true )
 696         {
 697             int i_num = var_GetInteger( p_vout, "snapshot-num" );
 698             FILE *p_file;
 699             do
 700             {
 701                 if( asprintf( &psz_filename, "%s" DIR_SEP "%s%05d.%s",
 702                               val.psz_string, psz_prefix, i_num++,
 703                               format.psz_string ) == -1 )
 704                 {
 705                     msg_Err( p_vout, "could not create snapshot" );
 706                     image_HandlerDelete( p_image );
 707                     return VLC_EGENERIC;
 708                 }
 709             }
 710             while( ( p_file = utf8_fopen( psz_filename, "r" ) ) && !fclose( p_file ) );
 711             var_SetInteger( p_vout, "snapshot-num", i_num );
 712         }
 713         else
 714         {
 715             if( asprintf( &psz_filename, "%s" DIR_SEP "%s%u.%s",
 716                           val.psz_string, psz_prefix,
 717                           (unsigned int)(p_pic->date / 100000) & 0xFFFFFF,
 718                           format.psz_string ) == -1 )
 719             {
 720                 msg_Err( p_vout, "could not create snapshot" );
 721                 image_HandlerDelete( p_image );
 722                 return VLC_EGENERIC;
 723             }
 724         }
 725
 726         free( psz_prefix );
 727     }
 728     else // The user specified a full path name (including file name)
 729     {
 730         psz_filename = str_format( p_vout, val.psz_string );
 731         path_sanitize( psz_filename );
 732     }
 733
 734     free( val.psz_string );
 735     free( format.psz_string );
 736
 737     fmt_out.i_width = var_GetInteger( p_vout, "snapshot-width" );
 738     fmt_out.i_height = var_GetInteger( p_vout, "snapshot-height" );
 739
 740     fmt_in = p_vout->fmt_in;
 741
 742     if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
 743     {
 744         fmt_out.i_width = (fmt_in.i_width * fmt_out.i_height) / fmt_in.i_height;
 745     }
 746     else if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
 747     {
 748         fmt_out.i_height = (fmt_in.i_height * fmt_out.i_width) / fmt_in.i_width;
 749     }
 750     else
 751     {
 752         fmt_out.i_width = fmt_in.i_width;
 753         fmt_out.i_height = fmt_in.i_height;
 754     }
 755
 756     /* Save the snapshot */
 757     fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 758     i_ret = image_WriteUrl( p_image, p_pic, &fmt_in, &fmt_out, psz_filename );
 759     if( i_ret != VLC_SUCCESS )
 760     {
 761         msg_Err( p_vout, "could not create snapshot %s", psz_filename );
 762         free( psz_filename );
 763         image_HandlerDelete( p_image );
 764         return VLC_EGENERIC;
 765     }
 766
 767     msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
 768     vout_OSDMessage( VLC_OBJECT( p_vout ), DEFAULT_CHAN,
 769                      "%s", psz_filename );
 770     free( psz_filename );
 771
 772     if( var_GetBool( p_vout, "snapshot-preview" ) )
 773     {
 774         /* Inject a subpicture with the snapshot */
 775         memset( &fmt_out, 0, sizeof(fmt_out) );
 776         fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 777         p_pif = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
 778         image_HandlerDelete( p_image );
 779         if( !p_pif ) return VLC_EGENERIC;
 780
 781         p_subpic = spu_CreateSubpicture( p_vout->p_spu );
 782         if( p_subpic == NULL )
 783         {
 784              p_pif->pf_release( p_pif );
 785              return VLC_EGENERIC;
 786         }
 787
 788         p_subpic->i_channel = 0;
 789         p_subpic->i_start = mdate();
 790         p_subpic->i_stop = mdate() + 4000000;
 791         p_subpic->b_ephemer = true;
 792         p_subpic->b_fade = true;
 793         p_subpic->i_original_picture_width = p_vout->render.i_width * 4;
 794         p_subpic->i_original_picture_height = p_vout->render.i_height * 4;
 795
 796         p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
 797         vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture,
 798                           p_pif );
 799         p_pif->pf_release( p_pif );
 800
 801         spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
 802     }
 803     else
 804     {
 805         image_HandlerDelete( p_image );
 806     }
 807
 808     return VLC_SUCCESS;
 809 }
 810
 811 /*****************************************************************************
 812  * Handle filters
 813  *****************************************************************************/
 814
 815 void vout_EnableFilter( vout_thread_t *p_vout, char *psz_name,
 816                         bool b_add, bool b_setconfig )
 817 {
 818     char *psz_parser;
 819     char *psz_string = config_GetPsz( p_vout, "vout-filter" );
 820
 821     /* Todo : Use some generic chain manipulation functions */
 822     if( !psz_string ) psz_string = strdup("");
 823
 824     psz_parser = strstr( psz_string, psz_name );
 825     if( b_add )
 826     {
 827         if( !psz_parser )
 828         {
 829             psz_parser = psz_string;
 830             if( asprintf( &psz_string, (*psz_string) ? "%s:%s" : "%s%s",
 831                           psz_string, psz_name ) == -1 )
 832             {
 833                 free( psz_parser );
 834                 return;
 835             }
 836             free( psz_parser );
 837         }
 838         else
 839             return;
 840     }
 841     else
 842     {
 843         if( psz_parser )
 844         {
 845             memmove( psz_parser, psz_parser + strlen(psz_name) +
 846                             (*(psz_parser + strlen(psz_name)) == ':' ? 1 : 0 ),
 847                             strlen(psz_parser + strlen(psz_name)) + 1 );
 848
 849             /* Remove trailing : : */
 850             if( *(psz_string+strlen(psz_string ) -1 ) == ':' )
 851             {
 852                 *(psz_string+strlen(psz_string ) -1 ) = '\0';
 853             }
 854          }
 855          else
 856          {
 857              free( psz_string );
 858              return;
 859          }
 860     }
 861     if( b_setconfig )
 862         config_PutPsz( p_vout, "vout-filter", psz_string );
 863
 864     var_SetString( p_vout, "vout-filter", psz_string );
 865     free( psz_string );
 866 }
 867
 868 /*****************************************************************************
 869  * vout_ControlDefault: default methods for video output control.
 870  *****************************************************************************/
 871 int vout_vaControlDefault( vout_thread_t *p_vout, int i_query, va_list args )
 872 {
 873     (void)args;
 874     switch( i_query )
 875     {
 876     case VOUT_REPARENT:
 877     case VOUT_CLOSE:
 878         if( p_vout->p_parent_intf )
 879         {
 880             vlc_object_release( p_vout->p_parent_intf );
 881             p_vout->p_parent_intf = NULL;
 882         }
 883         return VLC_SUCCESS;
 884         break;
 885
 886     case VOUT_SNAPSHOT:
 887         p_vout->b_snapshot = true;
 888         return VLC_SUCCESS;
 889         break;
 890
 891     default:
 892         msg_Dbg( p_vout, "control query not supported" );
 893         return VLC_EGENERIC;
 894     }
 895 }
 896
 897 /*****************************************************************************
 898  * InitWindowSize: find the initial dimensions the video window should have.
 899  *****************************************************************************
 900  * This function will check the "width", "height" and "zoom" config options and
 901  * will calculate the size that the video window should have.
 902  *****************************************************************************/
 903 static void InitWindowSize( vout_thread_t *p_vout, unsigned *pi_width,
 904                             unsigned *pi_height )
 905 {
 906     vlc_value_t val;
 907     int i_width, i_height;
 908     uint64_t ll_zoom;
 909
 910 #define FP_FACTOR 1000                             /* our fixed point factor */
 911
 912     var_Get( p_vout, "width", &val );
 913     i_width = val.i_int;
 914     var_Get( p_vout, "height", &val );
 915     i_height = val.i_int;
 916     var_Get( p_vout, "zoom", &val );
 917     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
 918
 919     if( i_width > 0 && i_height > 0)
 920     {
 921         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 922         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 923         goto initwsize_end;
 924     }
 925     else if( i_width > 0 )
 926     {
 927         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 928         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 929             p_vout->fmt_in.i_sar_den * i_width / p_vout->fmt_in.i_sar_num /
 930             FP_FACTOR / p_vout->fmt_in.i_visible_width );
 931         goto initwsize_end;
 932     }
 933     else if( i_height > 0 )
 934     {
 935         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 936         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 937             p_vout->fmt_in.i_sar_num * i_height / p_vout->fmt_in.i_sar_den /
 938             FP_FACTOR / p_vout->fmt_in.i_visible_height );
 939         goto initwsize_end;
 940     }
 941
 942     if( p_vout->fmt_in.i_sar_num == 0 || p_vout->fmt_in.i_sar_den == 0 ) {
 943         msg_Warn( p_vout, "fucked up aspect" );
 944         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom / FP_FACTOR );
 945         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom /FP_FACTOR);
 946     }
 947     else if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 948     {
 949         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 950             p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den / FP_FACTOR );
 951         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom
 952             / FP_FACTOR );
 953     }
 954     else
 955     {
 956         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom
 957             / FP_FACTOR );
 958         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 959             p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num / FP_FACTOR );
 960     }
 961
 962 initwsize_end:
 963     msg_Dbg( p_vout, "window size: %dx%d", p_vout->i_window_width,
 964              p_vout->i_window_height );
 965
 966 #undef FP_FACTOR
 967 }
 968
 969 /*****************************************************************************
 970  * Object variables callbacks
 971  *****************************************************************************/
 972 static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
 973                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 974 {
 975     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 976     (void)psz_cmd; (void)oldval; (void)newval; (void)p_data;
 977     InitWindowSize( p_vout, &p_vout->i_window_width,
 978                     &p_vout->i_window_height );
 979     vout_Control( p_vout, VOUT_SET_SIZE, p_vout->i_window_width,
 980                   p_vout->i_window_height );
 981     return VLC_SUCCESS;
 982 }
 983
 984 static int CropCallback( vlc_object_t *p_this, char const *psz_cmd,
 985                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 986 {
 987     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 988     int64_t i_aspect_num, i_aspect_den;
 989     unsigned int i_width, i_height;
 990
 991     (void)oldval; (void)p_data;
 992
 993     /* Restore defaults */
 994     p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset;
 995     p_vout->fmt_in.i_visible_width = p_vout->fmt_render.i_visible_width;
 996     p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset;
 997     p_vout->fmt_in.i_visible_height = p_vout->fmt_render.i_visible_height;
 998
 999     if( !strcmp( psz_cmd, "crop" ) )
1000     {
1001         char *psz_end = NULL, *psz_parser = strchr( newval.psz_string, ':' );
1002         if( psz_parser )
1003         {
1004             /* We're using the 3:4 syntax */
1005             i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
1006             if( psz_end == newval.psz_string || !i_aspect_num ) goto crop_end;
1007
1008             i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
1009             if( psz_end == psz_parser || !i_aspect_den ) goto crop_end;
1010
1011             i_width = p_vout->fmt_in.i_sar_den*p_vout->fmt_render.i_visible_height *
1012                 i_aspect_num / i_aspect_den / p_vout->fmt_in.i_sar_num;
1013             i_height = p_vout->fmt_render.i_visible_width*p_vout->fmt_in.i_sar_num *
1014                 i_aspect_den / i_aspect_num / p_vout->fmt_in.i_sar_den;
1015
1016             if( i_width < p_vout->fmt_render.i_visible_width )
1017             {
1018                 p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset +
1019                     (p_vout->fmt_render.i_visible_width - i_width) / 2;
1020                 p_vout->fmt_in.i_visible_width = i_width;
1021             }
1022             else
1023             {
1024                 p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset +
1025                     (p_vout->fmt_render.i_visible_height - i_height) / 2;
1026                 p_vout->fmt_in.i_visible_height = i_height;
1027             }
1028         }
1029         else
1030         {
1031             psz_parser = strchr( newval.psz_string, 'x' );
1032             if( psz_parser )
1033             {
1034                 /* Maybe we're using the <width>x<height>+<left>+<top> syntax */
1035                 unsigned int i_crop_width, i_crop_height, i_crop_top, i_crop_left;
1036
1037                 i_crop_width = strtol( newval.psz_string, &psz_end, 10 );
1038                 if( psz_end != psz_parser ) goto crop_end;
1039
1040                 psz_parser = strchr( ++psz_end, '+' );
1041                 i_crop_height = strtol( psz_end, &psz_end, 10 );
1042                 if( psz_end != psz_parser ) goto crop_end;
1043
1044                 psz_parser = strchr( ++psz_end, '+' );
1045                 i_crop_left = strtol( psz_end, &psz_end, 10 );
1046                 if( psz_end != psz_parser ) goto crop_end;
1047
1048                 psz_end++;
1049                 i_crop_top = strtol( psz_end, &psz_end, 10 );
1050                 if( *psz_end != '\0' ) goto crop_end;
1051
1052                 i_width = i_crop_width;
1053                 p_vout->fmt_in.i_visible_width = i_width;
1054
1055                 i_height = i_crop_height;
1056                 p_vout->fmt_in.i_visible_height = i_height;
1057
1058                 p_vout->fmt_in.i_x_offset = i_crop_left;
1059                 p_vout->fmt_in.i_y_offset = i_crop_top;
1060             }
1061             else
1062             {
1063                 /* Maybe we're using the <left>+<top>+<right>+<bottom> syntax */
1064                 unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
1065
1066                 psz_parser = strchr( newval.psz_string, '+' );
1067                 i_crop_left = strtol( newval.psz_string, &psz_end, 10 );
1068                 if( psz_end != psz_parser ) goto crop_end;
1069
1070                 psz_parser = strchr( ++psz_end, '+' );
1071                 i_crop_top = strtol( psz_end, &psz_end, 10 );
1072                 if( psz_end != psz_parser ) goto crop_end;
1073
1074                 psz_parser = strchr( ++psz_end, '+' );
1075                 i_crop_right = strtol( psz_end, &psz_end, 10 );
1076                 if( psz_end != psz_parser ) goto crop_end;
1077
1078                 psz_end++;
1079                 i_crop_bottom = strtol( psz_end, &psz_end, 10 );
1080                 if( *psz_end != '\0' ) goto crop_end;
1081
1082                 i_width = p_vout->fmt_render.i_visible_width
1083                           - i_crop_left - i_crop_right;
1084                 p_vout->fmt_in.i_visible_width = i_width;
1085
1086                 i_height = p_vout->fmt_render.i_visible_height
1087                            - i_crop_top - i_crop_bottom;
1088                 p_vout->fmt_in.i_visible_height = i_height;
1089
1090                 p_vout->fmt_in.i_x_offset = i_crop_left;
1091                 p_vout->fmt_in.i_y_offset = i_crop_top;
1092             }
1093         }
1094     }
1095     else if( !strcmp( psz_cmd, "crop-top" )
1096           || !strcmp( psz_cmd, "crop-left" )
1097           || !strcmp( psz_cmd, "crop-bottom" )
1098           || !strcmp( psz_cmd, "crop-right" ) )
1099     {
1100         unsigned int i_crop_top, i_crop_left, i_crop_bottom, i_crop_right;
1101
1102         i_crop_top = var_GetInteger( p_vout, "crop-top" );
1103         i_crop_left = var_GetInteger( p_vout, "crop-left" );
1104         i_crop_right = var_GetInteger( p_vout, "crop-right" );
1105         i_crop_bottom = var_GetInteger( p_vout, "crop-bottom" );
1106
1107         i_width = p_vout->fmt_render.i_visible_width
1108                   - i_crop_left - i_crop_right;
1109         p_vout->fmt_in.i_visible_width = i_width;
1110
1111         i_height = p_vout->fmt_render.i_visible_height
1112                    - i_crop_top - i_crop_bottom;
1113         p_vout->fmt_in.i_visible_height = i_height;
1114
1115         p_vout->fmt_in.i_x_offset = i_crop_left;
1116         p_vout->fmt_in.i_y_offset = i_crop_top;
1117     }
1118
1119  crop_end:
1120     InitWindowSize( p_vout, &p_vout->i_window_width,
1121                     &p_vout->i_window_height );
1122
1123     p_vout->i_changes |= VOUT_CROP_CHANGE;
1124
1125     msg_Dbg( p_vout, "cropping picture %ix%i to %i,%i,%ix%i",
1126              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
1127              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
1128              p_vout->fmt_in.i_visible_width,
1129              p_vout->fmt_in.i_visible_height );
1130
1131     var_SetVoid( p_vout, "crop-update" );
1132
1133     return VLC_SUCCESS;
1134 }
1135
1136 static int AspectCallback( vlc_object_t *p_this, char const *psz_cmd,
1137                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
1138 {
1139     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1140     unsigned int i_aspect_num, i_aspect_den, i_sar_num, i_sar_den;
1141     vlc_value_t val;
1142
1143     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
1144     (void)psz_cmd; (void)oldval; (void)p_data;
1145
1146     /* Restore defaults */
1147     p_vout->fmt_in.i_sar_num = p_vout->fmt_render.i_sar_num;
1148     p_vout->fmt_in.i_sar_den = p_vout->fmt_render.i_sar_den;
1149     p_vout->fmt_in.i_aspect = p_vout->fmt_render.i_aspect;
1150     p_vout->render.i_aspect = p_vout->fmt_render.i_aspect;
1151
1152     if( !psz_parser ) goto aspect_end;
1153
1154     i_aspect_num = strtol( newval.psz_string, &psz_end, 10 );
1155     if( psz_end == newval.psz_string || !i_aspect_num ) goto aspect_end;
1156
1157     i_aspect_den = strtol( ++psz_parser, &psz_end, 10 );
1158     if( psz_end == psz_parser || !i_aspect_den ) goto aspect_end;
1159
1160     i_sar_num = i_aspect_num * p_vout->fmt_render.i_visible_height;
1161     i_sar_den = i_aspect_den * p_vout->fmt_render.i_visible_width;
1162     vlc_ureduce( &i_sar_num, &i_sar_den, i_sar_num, i_sar_den, 0 );
1163     p_vout->fmt_in.i_sar_num = i_sar_num;
1164     p_vout->fmt_in.i_sar_den = i_sar_den;
1165     p_vout->fmt_in.i_aspect = i_aspect_num * VOUT_ASPECT_FACTOR / i_aspect_den;
1166     p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
1167
1168  aspect_end:
1169     if( p_vout->i_par_num && p_vout->i_par_den )
1170     {
1171         p_vout->fmt_in.i_sar_num *= p_vout->i_par_den;
1172         p_vout->fmt_in.i_sar_den *= p_vout->i_par_num;
1173         p_vout->fmt_in.i_aspect = p_vout->fmt_in.i_aspect *
1174             p_vout->i_par_den / p_vout->i_par_num;
1175         p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
1176     }
1177
1178     p_vout->i_changes |= VOUT_ASPECT_CHANGE;
1179
1180     vlc_ureduce( &i_aspect_num, &i_aspect_den,
1181                  p_vout->fmt_in.i_aspect, VOUT_ASPECT_FACTOR, 0 );
1182     msg_Dbg( p_vout, "new aspect-ratio %i:%i, sample aspect-ratio %i:%i",
1183              i_aspect_num, i_aspect_den,
1184              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
1185
1186     var_Get( p_vout, "crop", &val );
1187     return CropCallback( p_this, "crop", val, val, 0 );
1188 }
1189
1190 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
1191                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
1192 {
1193     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1194     playlist_t *p_playlist = pl_Yield( p_this );
1195     vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, newval.b_bool );
1196     (void)psz_cmd; (void)oldval; (void)p_data;
1197
1198     /* Modify playlist as well because the vout might have to be restarted */
1199     var_Create( p_playlist, "video-on-top", VLC_VAR_BOOL );
1200     var_Set( p_playlist, "video-on-top", newval );
1201
1202     pl_Release( p_this );
1203     return VLC_SUCCESS;
1204 }
1205
1206 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
1207                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1208 {
1209     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1210     vlc_value_t val;
1211     playlist_t *p_playlist = pl_Yield( p_this );
1212     (void)psz_cmd; (void)oldval; (void)p_data;
1213
1214     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
1215
1216     /* Modify playlist as well because the vout might have to be restarted */
1217     var_Create( p_playlist, "fullscreen", VLC_VAR_BOOL );
1218     var_Set( p_playlist, "fullscreen", newval );
1219     pl_Release( p_playlist );
1220
1221     val.b_bool = true;
1222     var_Set( p_vout, "intf-change", val );
1223     return VLC_SUCCESS;
1224 }
1225
1226 static int SnapshotCallback( vlc_object_t *p_this, char const *psz_cmd,
1227                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1228 {
1229     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1230     VLC_UNUSED(newval); VLC_UNUSED(p_data);
1231     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1232     vout_Control( p_vout, VOUT_SNAPSHOT );
1233     return VLC_SUCCESS;
1234 }
1235
1236 static int TitleShowCallback( vlc_object_t *p_this, char const *psz_cmd,
1237                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1238 {
1239     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1240     VLC_UNUSED(p_data);
1241     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1242     p_vout->b_title_show = newval.b_bool;
1243     return VLC_SUCCESS;
1244 }
1245
1246 static int TitleTimeoutCallback( vlc_object_t *p_this, char const *psz_cmd,
1247                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1248 {
1249     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_data);
1250     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1251     p_vout->i_title_timeout = (mtime_t) newval.i_int;
1252     return VLC_SUCCESS;
1253 }
1254
1255 static int TitlePositionCallback( vlc_object_t *p_this, char const *psz_cmd,
1256                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1257 {
1258     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
1259     VLC_UNUSED(p_data);
1260     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1261     p_vout->i_title_position = newval.i_int;
1262     return VLC_SUCCESS;
1263 }