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

   1 /*****************************************************************************
   2  * vout_intf.c : video output interface
   3  *****************************************************************************
   4  * Copyright (C) 2000-2004 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                                /* free() */
  28
  29 #include <vlc/vlc.h>
  30 #include <vlc/intf.h>
  31
  32 #include "vlc_video.h"
  33 #include "video_output.h"
  34 #include "vlc_image.h"
  35 #include "vlc_spu.h"
  36
  37 /*****************************************************************************
  38  * Local prototypes
  39  *****************************************************************************/
  40 static void InitWindowSize( vout_thread_t *, unsigned *, unsigned * );
  41
  42 /* Object variables callbacks */
  43 static int ZoomCallback( vlc_object_t *, char const *,
  44                          vlc_value_t, vlc_value_t, void * );
  45 static int CropCallback( vlc_object_t *, char const *,
  46                          vlc_value_t, vlc_value_t, void * );
  47 static int AspectCallback( vlc_object_t *, char const *,
  48                            vlc_value_t, vlc_value_t, void * );
  49 static int OnTopCallback( vlc_object_t *, char const *,
  50                           vlc_value_t, vlc_value_t, void * );
  51 static int FullscreenCallback( vlc_object_t *, char const *,
  52                                vlc_value_t, vlc_value_t, void * );
  53 static int SnapshotCallback( vlc_object_t *, char const *,
  54                              vlc_value_t, vlc_value_t, void * );
  55
  56 /*****************************************************************************
  57  * vout_RequestWindow: Create/Get a video window if possible.
  58  *****************************************************************************
  59  * This function looks for the main interface and tries to request
  60  * a new video window. If it fails then the vout will still need to create the
  61  * window by itself.
  62  *****************************************************************************/
  63 void *vout_RequestWindow( vout_thread_t *p_vout,
  64                           int *pi_x_hint, int *pi_y_hint,
  65                           unsigned int *pi_width_hint,
  66                           unsigned int *pi_height_hint )
  67 {
  68     intf_thread_t *p_intf = NULL;
  69     vlc_list_t *p_list;
  70     void *p_window;
  71     vlc_value_t val;
  72     int i;
  73
  74     /* Small kludge */
  75     if( !var_Type( p_vout, "aspect-ratio" ) ) vout_IntfInit( p_vout );
  76
  77     /* Get requested coordinates */
  78     var_Get( p_vout, "video-x", &val );
  79     *pi_x_hint = val.i_int ;
  80     var_Get( p_vout, "video-y", &val );
  81     *pi_y_hint = val.i_int;
  82
  83     *pi_width_hint = p_vout->i_window_width;
  84     *pi_height_hint = p_vout->i_window_height;
  85
  86     /* Check whether someone provided us with a window ID */
  87     var_Get( p_vout->p_vlc, "drawable", &val );
  88     if( val.i_int ) return (void *)val.i_int;
  89
  90     /* Find if the main interface supports embedding */
  91     p_list = vlc_list_find( p_vout, VLC_OBJECT_INTF, FIND_ANYWHERE );
  92     if( !p_list ) return NULL;
  93
  94     for( i = 0; i < p_list->i_count; i++ )
  95     {
  96         p_intf = (intf_thread_t *)p_list->p_values[i].p_object;
  97         if( p_intf->b_block && p_intf->pf_request_window ) break;
  98         p_intf = NULL;
  99     }
 100
 101     if( !p_intf )
 102     {
 103         vlc_list_release( p_list );
 104         return NULL;
 105     }
 106
 107     vlc_object_yield( p_intf );
 108     vlc_list_release( p_list );
 109
 110     p_window = p_intf->pf_request_window( p_intf, p_vout, pi_x_hint, pi_y_hint,
 111                                           pi_width_hint, pi_height_hint );
 112
 113     if( !p_window ) vlc_object_release( p_intf );
 114     else p_vout->p_parent_intf = p_intf;
 115
 116     return p_window;
 117 }
 118
 119 void vout_ReleaseWindow( vout_thread_t *p_vout, void *p_window )
 120 {
 121     intf_thread_t *p_intf = p_vout->p_parent_intf;
 122
 123     if( !p_intf ) return;
 124
 125     vlc_mutex_lock( &p_intf->object_lock );
 126     if( p_intf->b_dead )
 127     {
 128         vlc_mutex_unlock( &p_intf->object_lock );
 129         return;
 130     }
 131
 132     if( !p_intf->pf_release_window )
 133     {
 134         msg_Err( p_vout, "no pf_release_window");
 135         vlc_mutex_unlock( &p_intf->object_lock );
 136         vlc_object_release( p_intf );
 137         return;
 138     }
 139
 140     p_intf->pf_release_window( p_intf, p_window );
 141
 142     p_vout->p_parent_intf = NULL;
 143     vlc_mutex_unlock( &p_intf->object_lock );
 144     vlc_object_release( p_intf );
 145 }
 146
 147 int vout_ControlWindow( vout_thread_t *p_vout, void *p_window,
 148                         int i_query, va_list args )
 149 {
 150     intf_thread_t *p_intf = p_vout->p_parent_intf;
 151     int i_ret;
 152
 153     if( !p_intf ) return VLC_EGENERIC;
 154
 155     vlc_mutex_lock( &p_intf->object_lock );
 156     if( p_intf->b_dead )
 157     {
 158         vlc_mutex_unlock( &p_intf->object_lock );
 159         return VLC_EGENERIC;
 160     }
 161
 162     if( !p_intf->pf_control_window )
 163     {
 164         msg_Err( p_vout, "no pf_control_window");
 165         vlc_mutex_unlock( &p_intf->object_lock );
 166         return VLC_EGENERIC;
 167     }
 168
 169     i_ret = p_intf->pf_control_window( p_intf, p_window, i_query, args );
 170     vlc_mutex_unlock( &p_intf->object_lock );
 171     return i_ret;
 172 }
 173
 174 /*****************************************************************************
 175  * vout_IntfInit: called during the vout creation to initialise misc things.
 176  *****************************************************************************/
 177 void vout_IntfInit( vout_thread_t *p_vout )
 178 {
 179     vlc_value_t val, text, old_val;
 180     vlc_bool_t b_force_par = VLC_FALSE;
 181
 182     /* Create a few object variables we'll need later on */
 183     var_Create( p_vout, "snapshot-path", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 184     var_Create( p_vout, "snapshot-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 185     var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 186     var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 187     var_Create( p_vout, "align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 188     var_Get( p_vout, "align", &val );
 189     p_vout->i_alignment = val.i_int;
 190
 191     var_Create( p_vout, "video-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 192     var_Create( p_vout, "video-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 193
 194     /* Zoom object var */
 195     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_ISCOMMAND |
 196                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 197
 198     text.psz_string = _("Zoom");
 199     var_Change( p_vout, "zoom", VLC_VAR_SETTEXT, &text, NULL );
 200
 201     var_Get( p_vout, "zoom", &old_val );
 202     if( old_val.f_float == 0.25 ||
 203         old_val.f_float == 0.5 ||
 204         old_val.f_float == 1 ||
 205         old_val.f_float == 2 )
 206     {
 207         var_Change( p_vout, "zoom", VLC_VAR_DELCHOICE, &old_val, NULL );
 208     }
 209
 210     val.f_float = 0.25; text.psz_string = _("1:4 Quarter");
 211     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 212     val.f_float = 0.5; text.psz_string = _("1:2 Half");
 213     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 214     val.f_float = 1; text.psz_string = _("1:1 Original");
 215     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 216     val.f_float = 2; text.psz_string = _("2:1 Double");
 217     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 218
 219     var_Set( p_vout, "zoom", old_val );
 220
 221     var_AddCallback( p_vout, "zoom", ZoomCallback, NULL );
 222
 223     /* Crop object var */
 224     var_Create( p_vout, "crop", VLC_VAR_STRING |
 225                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 226
 227     text.psz_string = _("Crop");
 228     var_Change( p_vout, "crop", VLC_VAR_SETTEXT, &text, NULL );
 229
 230     val.psz_string = "";
 231     var_Change( p_vout, "crop", VLC_VAR_DELCHOICE, &val, 0 );
 232     val.psz_string = ""; text.psz_string = _("Default");
 233     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 234     val.psz_string = "001:1"; text.psz_string = _("1:1");
 235     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 236     val.psz_string = "004:3"; text.psz_string = _("4:3");
 237     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 238     val.psz_string = "16:9"; text.psz_string = _("16:9");
 239     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 240     val.psz_string = "221:100"; text.psz_string = _("221:100");
 241     var_Change( p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &text );
 242
 243     var_AddCallback( p_vout, "crop", CropCallback, NULL );
 244     var_Get( p_vout, "crop", &old_val );
 245     if( old_val.psz_string && *old_val.psz_string )
 246         var_Change( p_vout, "crop", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 247     if( old_val.psz_string ) free( old_val.psz_string );
 248
 249     /* Monitor pixel aspect-ratio */
 250     var_Create( p_vout, "monitor-par", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 251     var_Get( p_vout, "monitor-par", &val );
 252     if( val.psz_string && *val.psz_string )
 253     {
 254         char *psz_parser = strchr( val.psz_string, ':' );
 255         unsigned int i_aspect_num = 0, i_aspect_den = 0;
 256         float i_aspect = 0;
 257         if( psz_parser )
 258         {
 259             i_aspect_num = strtol( val.psz_string, 0, 0 );
 260             i_aspect_den = strtol( ++psz_parser, 0, 0 );
 261         }
 262         else
 263         {
 264             i_aspect = atof( val.psz_string );
 265             vlc_ureduce( &i_aspect_num, &i_aspect_den,
 266                          i_aspect *VOUT_ASPECT_FACTOR, VOUT_ASPECT_FACTOR, 0 );
 267         }
 268         if( !i_aspect_num || !i_aspect_den ) i_aspect_num = i_aspect_den = 1;
 269
 270         p_vout->i_par_num = i_aspect_num;
 271         p_vout->i_par_den = i_aspect_den;
 272
 273         vlc_ureduce( &p_vout->i_par_num, &p_vout->i_par_den,
 274                      p_vout->i_par_num, p_vout->i_par_den, 0 );
 275
 276         msg_Dbg( p_vout, "monitor pixel aspect-ratio overriding: %i:%i",
 277                  p_vout->i_par_num, p_vout->i_par_den );
 278         b_force_par = VLC_TRUE;
 279     }
 280     if( val.psz_string ) free( val.psz_string );
 281
 282     /* Aspect-ratio object var */
 283     var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING |
 284                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 285
 286     text.psz_string = _("Aspect-ratio");
 287     var_Change( p_vout, "aspect-ratio", VLC_VAR_SETTEXT, &text, NULL );
 288
 289     val.psz_string = "";
 290     var_Change( p_vout, "aspect-ratio", VLC_VAR_DELCHOICE, &val, 0 );
 291     val.psz_string = ""; text.psz_string = _("Default");
 292     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 293     val.psz_string = "001:1"; text.psz_string = _("1:1");
 294     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 295     val.psz_string = "004:3"; text.psz_string = _("4:3");
 296     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 297     val.psz_string = "16:9"; text.psz_string = _("16:9");
 298     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 299     val.psz_string = "221:100"; text.psz_string = _("221:100");
 300     var_Change( p_vout, "aspect-ratio", VLC_VAR_ADDCHOICE, &val, &text );
 301
 302     var_AddCallback( p_vout, "aspect-ratio", AspectCallback, NULL );
 303     var_Get( p_vout, "aspect-ratio", &old_val );
 304     if( (old_val.psz_string && *old_val.psz_string) || b_force_par )
 305         var_Change( p_vout, "aspect-ratio", VLC_VAR_TRIGGER_CALLBACKS, 0, 0 );
 306     if( old_val.psz_string ) free( old_val.psz_string );
 307
 308     /* Initialize the dimensions of the video window */
 309     InitWindowSize( p_vout, &p_vout->i_window_width,
 310                     &p_vout->i_window_height );
 311     msg_Dbg( p_vout, "window size: %dx%d", p_vout->i_window_width,
 312              p_vout->i_window_height );
 313
 314     /* Add a variable to indicate if the window should be on top of others */
 315     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 316     text.psz_string = _("Always on top");
 317     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 318     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 319
 320     /* Add a variable to indicate whether we want window decoration or not */
 321     var_Create( p_vout, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 322
 323     /* Add a fullscreen variable */
 324     var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
 325     text.psz_string = _("Fullscreen");
 326     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 327     var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
 328     if( val.b_bool )
 329     {
 330         /* user requested fullscreen */
 331         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 332     }
 333     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 334
 335     /* Add a snapshot variable */
 336     var_Create( p_vout, "video-snapshot", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
 337     text.psz_string = _("Snapshot");
 338     var_Change( p_vout, "video-snapshot", VLC_VAR_SETTEXT, &text, NULL );
 339     var_AddCallback( p_vout, "video-snapshot", SnapshotCallback, NULL );
 340
 341     /* Mouse coordinates */
 342     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 343     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 344     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 345     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 346     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 347
 348     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 349     val.b_bool = VLC_TRUE;
 350     var_Set( p_vout, "intf-change", val );
 351 }
 352
 353 /*****************************************************************************
 354  * vout_Snapshot: generates a snapshot.
 355  *****************************************************************************/
 356 int vout_Snapshot( vout_thread_t *p_vout, picture_t *p_pic )
 357 {
 358     image_handler_t *p_image = image_HandlerCreate( p_vout );
 359     video_format_t fmt_in = {0}, fmt_out = {0};
 360     char *psz_filename;
 361     subpicture_t *p_subpic;
 362     picture_t *p_pif;
 363     vlc_value_t val, format;
 364     int i_ret;
 365
 366     var_Get( p_vout, "snapshot-path", &val );
 367     if( val.psz_string && !*val.psz_string )
 368     {
 369         free( val.psz_string );
 370         val.psz_string = 0;
 371     }
 372
 373 #if defined(SYS_DARWIN) || defined(SYS_BEOS)
 374     if( !val.psz_string && p_vout->p_vlc->psz_homedir )
 375     {
 376         asprintf( &val.psz_string, "%s/Desktop",
 377                   p_vout->p_vlc->psz_homedir );
 378     }
 379
 380 #elif defined(WIN32) && !defined(UNDER_CE)
 381     if( !val.psz_string && p_vout->p_vlc->psz_homedir )
 382     {
 383         /* Get the My Pictures folder path */
 384
 385         char *p_mypicturesdir = NULL;
 386         typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
 387                                                    LPSTR );
 388         #ifndef CSIDL_FLAG_CREATE
 389         #   define CSIDL_FLAG_CREATE 0x8000
 390         #endif
 391         #ifndef CSIDL_MYPICTURES
 392         #   define CSIDL_MYPICTURES 0x27
 393         #endif
 394         #ifndef SHGFP_TYPE_CURRENT
 395         #   define SHGFP_TYPE_CURRENT 0
 396         #endif
 397
 398         HINSTANCE shfolder_dll;
 399         SHGETFOLDERPATH SHGetFolderPath ;
 400
 401         /* load the shfolder dll to retrieve SHGetFolderPath */
 402         if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
 403         {
 404             SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
 405                                                       _T("SHGetFolderPathA") );
 406             if( SHGetFolderPath != NULL )
 407             {
 408                 p_mypicturesdir = (char *)malloc( MAX_PATH );
 409                 if( p_mypicturesdir )
 410                 {
 411
 412                     if( S_OK != SHGetFolderPath( NULL,
 413                                         CSIDL_MYPICTURES | CSIDL_FLAG_CREATE,
 414                                         NULL, SHGFP_TYPE_CURRENT,
 415                                         p_mypicturesdir ) )
 416                     {
 417                         free( p_mypicturesdir );
 418                         p_mypicturesdir = NULL;
 419                     }
 420                 }
 421             }
 422             FreeLibrary( shfolder_dll );
 423         }
 424
 425         if( p_mypicturesdir == NULL )
 426         {
 427             asprintf( &val.psz_string, "%s/" CONFIG_DIR,
 428                       p_vout->p_vlc->psz_homedir );
 429         }
 430         else
 431         {
 432             asprintf( &val.psz_string, p_mypicturesdir );
 433             free( p_mypicturesdir );
 434         }
 435     }
 436
 437 #else
 438     if( !val.psz_string && p_vout->p_vlc->psz_homedir )
 439     {
 440         asprintf( &val.psz_string, "%s/" CONFIG_DIR,
 441                   p_vout->p_vlc->psz_homedir );
 442     }
 443 #endif
 444
 445     if( !val.psz_string )
 446     {
 447         msg_Err( p_vout, "no directory specified for snapshots" );
 448         return VLC_EGENERIC;
 449     }
 450     var_Get( p_vout, "snapshot-format", &format );
 451     if( !format.psz_string || !*format.psz_string )
 452     {
 453         if( format.psz_string ) free( format.psz_string );
 454         format.psz_string = strdup( "png" );
 455     }
 456
 457     asprintf( &psz_filename, "%s/vlcsnap-%u.%s", val.psz_string,
 458               (unsigned int)(p_pic->date / 100000) & 0xFFFFFF,
 459               format.psz_string );
 460     free( val.psz_string );
 461     free( format.psz_string );
 462
 463     /* Save the snapshot */
 464     fmt_in = p_vout->fmt_in;
 465     fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 466     i_ret = image_WriteUrl( p_image, p_pic, &fmt_in, &fmt_out, psz_filename );
 467     if( i_ret != VLC_SUCCESS )
 468     {
 469         msg_Err( p_vout, "could not create snapshot %s", psz_filename );
 470         free( psz_filename );
 471         image_HandlerDelete( p_image );
 472         return VLC_EGENERIC;
 473     }
 474
 475     msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
 476     free( psz_filename );
 477
 478     /* Inject a subpicture with the snapshot */
 479     memset( &fmt_out, 0, sizeof(fmt_out) );
 480     fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 481     p_pif = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
 482     image_HandlerDelete( p_image );
 483     if( !p_pif ) return VLC_EGENERIC;
 484
 485     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
 486     if( p_subpic == NULL )
 487     {
 488          p_pif->pf_release( p_pif );
 489          return VLC_EGENERIC;
 490     }
 491
 492     p_subpic->i_channel = 0;
 493     p_subpic->i_start = mdate();
 494     p_subpic->i_stop = mdate() + 4000000;
 495     p_subpic->b_ephemer = VLC_TRUE;
 496     p_subpic->b_fade = VLC_TRUE;
 497     p_subpic->i_original_picture_width = p_vout->render.i_width * 4;
 498     p_subpic->i_original_picture_height = p_vout->render.i_height * 4;
 499
 500     p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
 501     vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture, p_pif );
 502     p_pif->pf_release( p_pif );
 503
 504     spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
 505
 506     return VLC_SUCCESS;
 507 }
 508
 509 /*****************************************************************************
 510  * vout_ControlDefault: default methods for video output control.
 511  *****************************************************************************/
 512 int vout_vaControlDefault( vout_thread_t *p_vout, int i_query, va_list args )
 513 {
 514     switch( i_query )
 515     {
 516     case VOUT_REPARENT:
 517     case VOUT_CLOSE:
 518         if( p_vout->p_parent_intf )
 519         {
 520             vlc_object_release( p_vout->p_parent_intf );
 521             p_vout->p_parent_intf = NULL;
 522         }
 523         return VLC_SUCCESS;
 524         break;
 525
 526     case VOUT_SNAPSHOT:
 527         p_vout->b_snapshot = VLC_TRUE;
 528         return VLC_SUCCESS;
 529         break;
 530
 531     default:
 532         msg_Dbg( p_vout, "control query not supported" );
 533         return VLC_EGENERIC;
 534     }
 535 }
 536
 537 /*****************************************************************************
 538  * InitWindowSize: find the initial dimensions the video window should have.
 539  *****************************************************************************
 540  * This function will check the "width", "height" and "zoom" config options and
 541  * will calculate the size that the video window should have.
 542  *****************************************************************************/
 543 static void InitWindowSize( vout_thread_t *p_vout, unsigned *pi_width,
 544                             unsigned *pi_height )
 545 {
 546     vlc_value_t val;
 547     int i_width, i_height;
 548     uint64_t ll_zoom;
 549
 550 #define FP_FACTOR 1000                             /* our fixed point factor */
 551
 552     var_Get( p_vout, "width", &val );
 553     i_width = val.i_int;
 554     var_Get( p_vout, "height", &val );
 555     i_height = val.i_int;
 556     var_Get( p_vout, "zoom", &val );
 557     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
 558
 559     if( i_width > 0 && i_height > 0)
 560     {
 561         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 562         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 563         return;
 564     }
 565     else if( i_width > 0 )
 566     {
 567         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 568         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 569             p_vout->fmt_in.i_sar_den * i_width / p_vout->fmt_in.i_sar_num /
 570             FP_FACTOR / p_vout->fmt_in.i_visible_width );
 571         return;
 572     }
 573     else if( i_height > 0 )
 574     {
 575         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 576         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 577             p_vout->fmt_in.i_sar_num * i_height / p_vout->fmt_in.i_sar_den /
 578             FP_FACTOR / p_vout->fmt_in.i_visible_height );
 579         return;
 580     }
 581
 582     if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 583     {
 584         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 585             p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den / FP_FACTOR );
 586         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom
 587             / FP_FACTOR );
 588     }
 589     else
 590     {
 591         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom
 592             / FP_FACTOR );
 593         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 594             p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num / FP_FACTOR );
 595     }
 596
 597 #undef FP_FACTOR
 598 }
 599
 600 /*****************************************************************************
 601  * Object variables callbacks
 602  *****************************************************************************/
 603 static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
 604                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 605 {
 606     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 607     vout_Control( p_vout, VOUT_SET_ZOOM, newval.f_float );
 608     return VLC_SUCCESS;
 609 }
 610
 611 static int CropCallback( vlc_object_t *p_this, char const *psz_cmd,
 612                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 613 {
 614     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 615     int64_t i_aspect_num, i_aspect_den;
 616     unsigned int i_width, i_height;
 617
 618     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
 619
 620     /* Restore defaults */
 621     p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset;
 622     p_vout->fmt_in.i_visible_width = p_vout->fmt_render.i_visible_width;
 623     p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset;
 624     p_vout->fmt_in.i_visible_height = p_vout->fmt_render.i_visible_height;
 625
 626     if( !psz_parser ) goto crop_end;
 627
 628     i_aspect_num = strtol( newval.psz_string, &psz_end, 0 );
 629     if( psz_end == newval.psz_string || !i_aspect_num ) goto crop_end;
 630
 631     i_aspect_den = strtol( ++psz_parser, &psz_end, 0 );
 632     if( psz_end == psz_parser || !i_aspect_den ) goto crop_end;
 633
 634     i_width = p_vout->fmt_in.i_sar_den * p_vout->fmt_render.i_visible_height *
 635         i_aspect_num / i_aspect_den / p_vout->fmt_in.i_sar_num;
 636     i_height = p_vout->fmt_render.i_visible_width * p_vout->fmt_in.i_sar_num *
 637         i_aspect_den / i_aspect_num / p_vout->fmt_in.i_sar_den;
 638
 639     if( i_width < p_vout->fmt_render.i_visible_width )
 640     {
 641         p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset +
 642             (p_vout->fmt_render.i_visible_width - i_width) / 2;
 643         p_vout->fmt_in.i_visible_width = i_width;
 644     }
 645     else
 646     {
 647         p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset +
 648             (p_vout->fmt_render.i_visible_height - i_height) / 2;
 649         p_vout->fmt_in.i_visible_height = i_height;
 650     }
 651
 652  crop_end:
 653     InitWindowSize( p_vout, &p_vout->i_window_width,
 654                     &p_vout->i_window_height );
 655
 656     p_vout->i_changes |= VOUT_CROP_CHANGE;
 657
 658     msg_Dbg( p_vout, "cropping picture %ix%i to %i,%i,%ix%i",
 659              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 660              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 661              p_vout->fmt_in.i_visible_width,
 662              p_vout->fmt_in.i_visible_height );
 663
 664     return VLC_SUCCESS;
 665 }
 666
 667 static int AspectCallback( vlc_object_t *p_this, char const *psz_cmd,
 668                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 669 {
 670     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 671     unsigned int i_aspect_num, i_aspect_den, i_sar_num, i_sar_den;
 672     vlc_value_t val;
 673
 674     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
 675
 676     /* Restore defaults */
 677     p_vout->fmt_in.i_sar_num = p_vout->fmt_render.i_sar_num;
 678     p_vout->fmt_in.i_sar_den = p_vout->fmt_render.i_sar_den;
 679     p_vout->fmt_in.i_aspect = p_vout->fmt_render.i_aspect;
 680     p_vout->render.i_aspect = p_vout->fmt_render.i_aspect;
 681
 682     if( !psz_parser ) goto aspect_end;
 683
 684     i_aspect_num = strtol( newval.psz_string, &psz_end, 0 );
 685     if( psz_end == newval.psz_string || !i_aspect_num ) goto aspect_end;
 686
 687     i_aspect_den = strtol( ++psz_parser, &psz_end, 0 );
 688     if( psz_end == psz_parser || !i_aspect_den ) goto aspect_end;
 689
 690     i_sar_num = i_aspect_num * p_vout->fmt_render.i_visible_height;
 691     i_sar_den = i_aspect_den * p_vout->fmt_render.i_visible_width;
 692     vlc_ureduce( &i_sar_num, &i_sar_den, i_sar_num, i_sar_den, 0 );
 693     p_vout->fmt_in.i_sar_num = i_sar_num;
 694     p_vout->fmt_in.i_sar_den = i_sar_den;
 695     p_vout->fmt_in.i_aspect = i_aspect_num * VOUT_ASPECT_FACTOR / i_aspect_den;
 696     p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
 697
 698  aspect_end:
 699     if( p_vout->i_par_num && p_vout->i_par_den )
 700     {
 701         p_vout->fmt_in.i_sar_num *= p_vout->i_par_den;
 702         p_vout->fmt_in.i_sar_den *= p_vout->i_par_num;
 703         p_vout->fmt_in.i_aspect = p_vout->fmt_in.i_aspect *
 704             p_vout->i_par_den / p_vout->i_par_num;
 705         p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
 706     }
 707
 708     p_vout->i_changes |= VOUT_ASPECT_CHANGE;
 709
 710     vlc_ureduce( &i_aspect_num, &i_aspect_den,
 711                  p_vout->fmt_in.i_aspect, VOUT_ASPECT_FACTOR, 0 );
 712     msg_Dbg( p_vout, "new aspect-ratio %i:%i, sample aspect-ratio %i:%i",
 713              i_aspect_num, i_aspect_den,
 714              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 715
 716     var_Get( p_vout, "crop", &val );
 717     return CropCallback( p_this, 0, val, val, 0 );
 718
 719     return VLC_SUCCESS;
 720 }
 721
 722 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
 723                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 724 {
 725     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 726     playlist_t *p_playlist;
 727     vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, newval.b_bool );
 728
 729     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 730                                                  FIND_PARENT );
 731     if( p_playlist )
 732     {
 733         /* Modify playlist as well because the vout might have to be restarted */
 734         var_Create( p_playlist, "video-on-top", VLC_VAR_BOOL );
 735         var_Set( p_playlist, "video-on-top", newval );
 736
 737         vlc_object_release( p_playlist );
 738     }
 739     return VLC_SUCCESS;
 740 }
 741
 742 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
 743                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 744 {
 745     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 746     playlist_t *p_playlist;
 747     vlc_value_t val;
 748
 749     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 750
 751     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 752                                                  FIND_PARENT );
 753     if( p_playlist )
 754     {
 755         /* Modify playlist as well because the vout might have to be restarted */
 756         var_Create( p_playlist, "fullscreen", VLC_VAR_BOOL );
 757         var_Set( p_playlist, "fullscreen", newval );
 758
 759         vlc_object_release( p_playlist );
 760     }
 761
 762     /* Disable "always on top" in fullscreen mode */
 763     var_Get( p_vout, "video-on-top", &val );
 764     if( newval.b_bool && val.b_bool )
 765     {
 766         val.b_bool = VLC_FALSE;
 767         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
 768     }
 769     else if( !newval.b_bool && val.b_bool )
 770     {
 771         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
 772     }
 773
 774     val.b_bool = VLC_TRUE;
 775     var_Set( p_vout, "intf-change", val );
 776     return VLC_SUCCESS;
 777 }
 778
 779 static int SnapshotCallback( vlc_object_t *p_this, char const *psz_cmd,
 780                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 781 {
 782     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 783     vout_Control( p_vout, VOUT_SNAPSHOT );
 784     return VLC_SUCCESS;
 785 }