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