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
 312     /* Add a variable to indicate if the window should be on top of others */
 313     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 314     text.psz_string = _("Always on top");
 315     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 316     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 317
 318     /* Add a variable to indicate whether we want window decoration or not */
 319     var_Create( p_vout, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 320
 321     /* Add a fullscreen variable */
 322     var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
 323     text.psz_string = _("Fullscreen");
 324     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 325     var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
 326     if( val.b_bool )
 327     {
 328         /* user requested fullscreen */
 329         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 330     }
 331     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 332
 333     /* Add a snapshot variable */
 334     var_Create( p_vout, "video-snapshot", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
 335     text.psz_string = _("Snapshot");
 336     var_Change( p_vout, "video-snapshot", VLC_VAR_SETTEXT, &text, NULL );
 337     var_AddCallback( p_vout, "video-snapshot", SnapshotCallback, NULL );
 338
 339     /* Mouse coordinates */
 340     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 341     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 342     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 343     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 344     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 345
 346     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 347     val.b_bool = VLC_TRUE;
 348     var_Set( p_vout, "intf-change", val );
 349 }
 350
 351 /*****************************************************************************
 352  * vout_Snapshot: generates a snapshot.
 353  *****************************************************************************/
 354 int vout_Snapshot( vout_thread_t *p_vout, picture_t *p_pic )
 355 {
 356     image_handler_t *p_image = image_HandlerCreate( p_vout );
 357     video_format_t fmt_in = {0}, fmt_out = {0};
 358     char *psz_filename;
 359     subpicture_t *p_subpic;
 360     picture_t *p_pif;
 361     vlc_value_t val, format;
 362     int i_ret;
 363
 364     var_Get( p_vout, "snapshot-path", &val );
 365     if( val.psz_string && !*val.psz_string )
 366     {
 367         free( val.psz_string );
 368         val.psz_string = 0;
 369     }
 370
 371 #if defined(SYS_DARWIN) || defined(SYS_BEOS)
 372     if( !val.psz_string && p_vout->p_vlc->psz_homedir )
 373     {
 374         asprintf( &val.psz_string, "%s/Desktop",
 375                   p_vout->p_vlc->psz_homedir );
 376     }
 377
 378 #elif defined(WIN32) && !defined(UNDER_CE)
 379     if( !val.psz_string && p_vout->p_vlc->psz_homedir )
 380     {
 381         /* Get the My Pictures folder path */
 382
 383         char *p_mypicturesdir = NULL;
 384         typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
 385                                                    LPSTR );
 386         #ifndef CSIDL_FLAG_CREATE
 387         #   define CSIDL_FLAG_CREATE 0x8000
 388         #endif
 389         #ifndef CSIDL_MYPICTURES
 390         #   define CSIDL_MYPICTURES 0x27
 391         #endif
 392         #ifndef SHGFP_TYPE_CURRENT
 393         #   define SHGFP_TYPE_CURRENT 0
 394         #endif
 395
 396         HINSTANCE shfolder_dll;
 397         SHGETFOLDERPATH SHGetFolderPath ;
 398
 399         /* load the shfolder dll to retrieve SHGetFolderPath */
 400         if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
 401         {
 402             SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
 403                                                       _T("SHGetFolderPathA") );
 404             if( SHGetFolderPath != NULL )
 405             {
 406                 p_mypicturesdir = (char *)malloc( MAX_PATH );
 407                 if( p_mypicturesdir )
 408                 {
 409
 410                     if( S_OK != SHGetFolderPath( NULL,
 411                                         CSIDL_MYPICTURES | CSIDL_FLAG_CREATE,
 412                                         NULL, SHGFP_TYPE_CURRENT,
 413                                         p_mypicturesdir ) )
 414                     {
 415                         free( p_mypicturesdir );
 416                         p_mypicturesdir = NULL;
 417                     }
 418                 }
 419             }
 420             FreeLibrary( shfolder_dll );
 421         }
 422
 423         if( p_mypicturesdir == NULL )
 424         {
 425             asprintf( &val.psz_string, "%s/" CONFIG_DIR,
 426                       p_vout->p_vlc->psz_homedir );
 427         }
 428         else
 429         {
 430             asprintf( &val.psz_string, p_mypicturesdir );
 431             free( p_mypicturesdir );
 432         }
 433     }
 434
 435 #else
 436     if( !val.psz_string && p_vout->p_vlc->psz_homedir )
 437     {
 438         asprintf( &val.psz_string, "%s/" CONFIG_DIR,
 439                   p_vout->p_vlc->psz_homedir );
 440     }
 441 #endif
 442
 443     if( !val.psz_string )
 444     {
 445         msg_Err( p_vout, "no directory specified for snapshots" );
 446         return VLC_EGENERIC;
 447     }
 448     var_Get( p_vout, "snapshot-format", &format );
 449     if( !format.psz_string || !*format.psz_string )
 450     {
 451         if( format.psz_string ) free( format.psz_string );
 452         format.psz_string = strdup( "png" );
 453     }
 454
 455     asprintf( &psz_filename, "%s/vlcsnap-%u.%s", val.psz_string,
 456               (unsigned int)(p_pic->date / 100000) & 0xFFFFFF,
 457               format.psz_string );
 458     free( val.psz_string );
 459     free( format.psz_string );
 460
 461     /* Save the snapshot */
 462     fmt_in = p_vout->fmt_in;
 463     fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 464     i_ret = image_WriteUrl( p_image, p_pic, &fmt_in, &fmt_out, psz_filename );
 465     if( i_ret != VLC_SUCCESS )
 466     {
 467         msg_Err( p_vout, "could not create snapshot %s", psz_filename );
 468         free( psz_filename );
 469         image_HandlerDelete( p_image );
 470         return VLC_EGENERIC;
 471     }
 472
 473     msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
 474     free( psz_filename );
 475
 476     /* Inject a subpicture with the snapshot */
 477     memset( &fmt_out, 0, sizeof(fmt_out) );
 478     fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 479     p_pif = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
 480     image_HandlerDelete( p_image );
 481     if( !p_pif ) return VLC_EGENERIC;
 482
 483     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
 484     if( p_subpic == NULL )
 485     {
 486          p_pif->pf_release( p_pif );
 487          return VLC_EGENERIC;
 488     }
 489
 490     p_subpic->i_channel = 0;
 491     p_subpic->i_start = mdate();
 492     p_subpic->i_stop = mdate() + 4000000;
 493     p_subpic->b_ephemer = VLC_TRUE;
 494     p_subpic->b_fade = VLC_TRUE;
 495     p_subpic->i_original_picture_width = p_vout->render.i_width * 4;
 496     p_subpic->i_original_picture_height = p_vout->render.i_height * 4;
 497
 498     p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
 499     vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture, p_pif );
 500     p_pif->pf_release( p_pif );
 501
 502     spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
 503
 504     return VLC_SUCCESS;
 505 }
 506
 507 /*****************************************************************************
 508  * vout_ControlDefault: default methods for video output control.
 509  *****************************************************************************/
 510 int vout_vaControlDefault( vout_thread_t *p_vout, int i_query, va_list args )
 511 {
 512     switch( i_query )
 513     {
 514     case VOUT_REPARENT:
 515     case VOUT_CLOSE:
 516         if( p_vout->p_parent_intf )
 517         {
 518             vlc_object_release( p_vout->p_parent_intf );
 519             p_vout->p_parent_intf = NULL;
 520         }
 521         return VLC_SUCCESS;
 522         break;
 523
 524     case VOUT_SNAPSHOT:
 525         p_vout->b_snapshot = VLC_TRUE;
 526         return VLC_SUCCESS;
 527         break;
 528
 529     default:
 530         msg_Dbg( p_vout, "control query not supported" );
 531         return VLC_EGENERIC;
 532     }
 533 }
 534
 535 /*****************************************************************************
 536  * InitWindowSize: find the initial dimensions the video window should have.
 537  *****************************************************************************
 538  * This function will check the "width", "height" and "zoom" config options and
 539  * will calculate the size that the video window should have.
 540  *****************************************************************************/
 541 static void InitWindowSize( vout_thread_t *p_vout, unsigned *pi_width,
 542                             unsigned *pi_height )
 543 {
 544     vlc_value_t val;
 545     int i_width, i_height;
 546     uint64_t ll_zoom;
 547
 548 #define FP_FACTOR 1000                             /* our fixed point factor */
 549
 550     var_Get( p_vout, "width", &val );
 551     i_width = val.i_int;
 552     var_Get( p_vout, "height", &val );
 553     i_height = val.i_int;
 554     var_Get( p_vout, "zoom", &val );
 555     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
 556
 557     if( i_width > 0 && i_height > 0)
 558     {
 559         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 560         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 561         goto initwsize_end;
 562     }
 563     else if( i_width > 0 )
 564     {
 565         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
 566         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 567             p_vout->fmt_in.i_sar_den * i_width / p_vout->fmt_in.i_sar_num /
 568             FP_FACTOR / p_vout->fmt_in.i_visible_width );
 569         goto initwsize_end;
 570     }
 571     else if( i_height > 0 )
 572     {
 573         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
 574         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 575             p_vout->fmt_in.i_sar_num * i_height / p_vout->fmt_in.i_sar_den /
 576             FP_FACTOR / p_vout->fmt_in.i_visible_height );
 577         goto initwsize_end;
 578     }
 579
 580     if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 581     {
 582         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom *
 583             p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den / FP_FACTOR );
 584         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom
 585             / FP_FACTOR );
 586     }
 587     else
 588     {
 589         *pi_width = (int)( p_vout->fmt_in.i_visible_width * ll_zoom
 590             / FP_FACTOR );
 591         *pi_height = (int)( p_vout->fmt_in.i_visible_height * ll_zoom *
 592             p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num / FP_FACTOR );
 593     }
 594
 595 initwsize_end:
 596     msg_Dbg( p_vout, "window size: %dx%d", p_vout->i_window_width,
 597              p_vout->i_window_height );
 598
 599 #undef FP_FACTOR
 600 }
 601
 602 /*****************************************************************************
 603  * Object variables callbacks
 604  *****************************************************************************/
 605 static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
 606                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 607 {
 608     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 609     InitWindowSize( p_vout, &p_vout->i_window_width,
 610                     &p_vout->i_window_height );
 611     vout_Control( p_vout, VOUT_SET_ZOOM );
 612     return VLC_SUCCESS;
 613 }
 614
 615 static int CropCallback( vlc_object_t *p_this, char const *psz_cmd,
 616                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 617 {
 618     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 619     int64_t i_aspect_num, i_aspect_den;
 620     unsigned int i_width, i_height;
 621
 622     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
 623
 624     /* Restore defaults */
 625     p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset;
 626     p_vout->fmt_in.i_visible_width = p_vout->fmt_render.i_visible_width;
 627     p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset;
 628     p_vout->fmt_in.i_visible_height = p_vout->fmt_render.i_visible_height;
 629
 630     if( !psz_parser ) goto crop_end;
 631
 632     i_aspect_num = strtol( newval.psz_string, &psz_end, 0 );
 633     if( psz_end == newval.psz_string || !i_aspect_num ) goto crop_end;
 634
 635     i_aspect_den = strtol( ++psz_parser, &psz_end, 0 );
 636     if( psz_end == psz_parser || !i_aspect_den ) goto crop_end;
 637
 638     i_width = p_vout->fmt_in.i_sar_den * p_vout->fmt_render.i_visible_height *
 639         i_aspect_num / i_aspect_den / p_vout->fmt_in.i_sar_num;
 640     i_height = p_vout->fmt_render.i_visible_width * p_vout->fmt_in.i_sar_num *
 641         i_aspect_den / i_aspect_num / p_vout->fmt_in.i_sar_den;
 642
 643     if( i_width < p_vout->fmt_render.i_visible_width )
 644     {
 645         p_vout->fmt_in.i_x_offset = p_vout->fmt_render.i_x_offset +
 646             (p_vout->fmt_render.i_visible_width - i_width) / 2;
 647         p_vout->fmt_in.i_visible_width = i_width;
 648     }
 649     else
 650     {
 651         p_vout->fmt_in.i_y_offset = p_vout->fmt_render.i_y_offset +
 652             (p_vout->fmt_render.i_visible_height - i_height) / 2;
 653         p_vout->fmt_in.i_visible_height = i_height;
 654     }
 655
 656  crop_end:
 657     InitWindowSize( p_vout, &p_vout->i_window_width,
 658                     &p_vout->i_window_height );
 659
 660     p_vout->i_changes |= VOUT_CROP_CHANGE;
 661
 662     msg_Dbg( p_vout, "cropping picture %ix%i to %i,%i,%ix%i",
 663              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 664              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 665              p_vout->fmt_in.i_visible_width,
 666              p_vout->fmt_in.i_visible_height );
 667
 668     return VLC_SUCCESS;
 669 }
 670
 671 static int AspectCallback( vlc_object_t *p_this, char const *psz_cmd,
 672                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 673 {
 674     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 675     unsigned int i_aspect_num, i_aspect_den, i_sar_num, i_sar_den;
 676     vlc_value_t val;
 677
 678     char *psz_end, *psz_parser = strchr( newval.psz_string, ':' );
 679
 680     /* Restore defaults */
 681     p_vout->fmt_in.i_sar_num = p_vout->fmt_render.i_sar_num;
 682     p_vout->fmt_in.i_sar_den = p_vout->fmt_render.i_sar_den;
 683     p_vout->fmt_in.i_aspect = p_vout->fmt_render.i_aspect;
 684     p_vout->render.i_aspect = p_vout->fmt_render.i_aspect;
 685
 686     if( !psz_parser ) goto aspect_end;
 687
 688     i_aspect_num = strtol( newval.psz_string, &psz_end, 0 );
 689     if( psz_end == newval.psz_string || !i_aspect_num ) goto aspect_end;
 690
 691     i_aspect_den = strtol( ++psz_parser, &psz_end, 0 );
 692     if( psz_end == psz_parser || !i_aspect_den ) goto aspect_end;
 693
 694     i_sar_num = i_aspect_num * p_vout->fmt_render.i_visible_height;
 695     i_sar_den = i_aspect_den * p_vout->fmt_render.i_visible_width;
 696     vlc_ureduce( &i_sar_num, &i_sar_den, i_sar_num, i_sar_den, 0 );
 697     p_vout->fmt_in.i_sar_num = i_sar_num;
 698     p_vout->fmt_in.i_sar_den = i_sar_den;
 699     p_vout->fmt_in.i_aspect = i_aspect_num * VOUT_ASPECT_FACTOR / i_aspect_den;
 700     p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
 701
 702  aspect_end:
 703     if( p_vout->i_par_num && p_vout->i_par_den )
 704     {
 705         p_vout->fmt_in.i_sar_num *= p_vout->i_par_den;
 706         p_vout->fmt_in.i_sar_den *= p_vout->i_par_num;
 707         p_vout->fmt_in.i_aspect = p_vout->fmt_in.i_aspect *
 708             p_vout->i_par_den / p_vout->i_par_num;
 709         p_vout->render.i_aspect = p_vout->fmt_in.i_aspect;
 710     }
 711
 712     p_vout->i_changes |= VOUT_ASPECT_CHANGE;
 713
 714     vlc_ureduce( &i_aspect_num, &i_aspect_den,
 715                  p_vout->fmt_in.i_aspect, VOUT_ASPECT_FACTOR, 0 );
 716     msg_Dbg( p_vout, "new aspect-ratio %i:%i, sample aspect-ratio %i:%i",
 717              i_aspect_num, i_aspect_den,
 718              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 719
 720     var_Get( p_vout, "crop", &val );
 721     return CropCallback( p_this, 0, val, val, 0 );
 722
 723     return VLC_SUCCESS;
 724 }
 725
 726 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
 727                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 728 {
 729     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 730     playlist_t *p_playlist;
 731     vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, newval.b_bool );
 732
 733     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 734                                                  FIND_PARENT );
 735     if( p_playlist )
 736     {
 737         /* Modify playlist as well because the vout might have to be restarted */
 738         var_Create( p_playlist, "video-on-top", VLC_VAR_BOOL );
 739         var_Set( p_playlist, "video-on-top", newval );
 740
 741         vlc_object_release( p_playlist );
 742     }
 743     return VLC_SUCCESS;
 744 }
 745
 746 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
 747                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 748 {
 749     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 750     playlist_t *p_playlist;
 751     vlc_value_t val;
 752
 753     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 754
 755     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 756                                                  FIND_PARENT );
 757     if( p_playlist )
 758     {
 759         /* Modify playlist as well because the vout might have to be restarted */
 760         var_Create( p_playlist, "fullscreen", VLC_VAR_BOOL );
 761         var_Set( p_playlist, "fullscreen", newval );
 762
 763         vlc_object_release( p_playlist );
 764     }
 765
 766     /* Disable "always on top" in fullscreen mode */
 767     var_Get( p_vout, "video-on-top", &val );
 768     if( newval.b_bool && val.b_bool )
 769     {
 770         val.b_bool = VLC_FALSE;
 771         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
 772     }
 773     else if( !newval.b_bool && val.b_bool )
 774     {
 775         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
 776     }
 777
 778     val.b_bool = VLC_TRUE;
 779     var_Set( p_vout, "intf-change", val );
 780     return VLC_SUCCESS;
 781 }
 782
 783 static int SnapshotCallback( vlc_object_t *p_this, char const *psz_cmd,
 784                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 785 {
 786     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 787     vout_Control( p_vout, VOUT_SNAPSHOT );
 788     return VLC_SUCCESS;
 789 }