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 VideoLAN
   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
  41 /* Object variables callbacks */
  42 static int ZoomCallback( vlc_object_t *, char const *,
  43                          vlc_value_t, vlc_value_t, void * );
  44 static int OnTopCallback( vlc_object_t *, char const *,
  45                           vlc_value_t, vlc_value_t, void * );
  46 static int FullscreenCallback( vlc_object_t *, char const *,
  47                                vlc_value_t, vlc_value_t, void * );
  48
  49 /*****************************************************************************
  50  * vout_RequestWindow: Create/Get a video window if possible.
  51  *****************************************************************************
  52  * This function looks for the main interface and tries to request
  53  * a new video window. If it fails then the vout will still need to create the
  54  * window by itself.
  55  *****************************************************************************/
  56 void *vout_RequestWindow( vout_thread_t *p_vout,
  57                           int *pi_x_hint, int *pi_y_hint,
  58                           unsigned int *pi_width_hint,
  59                           unsigned int *pi_height_hint )
  60 {
  61     intf_thread_t *p_intf = NULL;
  62     vlc_list_t *p_list;
  63     void *p_window;
  64     vlc_value_t val;
  65     int i;
  66
  67     /* Small kludge */
  68     if( !var_Type( p_vout, "aspect-ratio" ) ) vout_IntfInit( p_vout );
  69
  70     /* Get requested coordinates */
  71     var_Get( p_vout, "video-x", &val );
  72     *pi_x_hint = val.i_int ;
  73     var_Get( p_vout, "video-y", &val );
  74     *pi_y_hint = val.i_int;
  75
  76     *pi_width_hint = p_vout->i_window_width;
  77     *pi_height_hint = p_vout->i_window_height;
  78
  79     /* Check whether someone provided us with a window ID */
  80     var_Get( p_vout->p_vlc, "drawable", &val );
  81     if( val.i_int ) return (void *)val.i_int;
  82
  83     /* Find if the main interface supports embedding */
  84     p_list = vlc_list_find( p_vout, VLC_OBJECT_INTF, FIND_ANYWHERE );
  85     if( !p_list ) return NULL;
  86
  87     for( i = 0; i < p_list->i_count; i++ )
  88     {
  89         p_intf = (intf_thread_t *)p_list->p_values[i].p_object;
  90         if( p_intf->b_block && p_intf->pf_request_window ) break;
  91         p_intf = NULL;
  92     }
  93
  94     if( !p_intf )
  95     {
  96         vlc_list_release( p_list );
  97         return NULL;
  98     }
  99
 100     vlc_object_yield( p_intf );
 101     vlc_list_release( p_list );
 102
 103     p_window = p_intf->pf_request_window( p_intf, p_vout, pi_x_hint, pi_y_hint,
 104                                           pi_width_hint, pi_height_hint );
 105
 106     if( !p_window ) vlc_object_release( p_intf );
 107     else p_vout->p_parent_intf = p_intf;
 108
 109     return p_window;
 110 }
 111
 112 void vout_ReleaseWindow( vout_thread_t *p_vout, void *p_window )
 113 {
 114     intf_thread_t *p_intf = p_vout->p_parent_intf;
 115
 116     if( !p_intf ) return;
 117
 118     vlc_mutex_lock( &p_intf->object_lock );
 119     if( p_intf->b_dead )
 120     {
 121         vlc_mutex_unlock( &p_intf->object_lock );
 122         return;
 123     }
 124
 125     if( !p_intf->pf_release_window )
 126     {
 127         msg_Err( p_vout, "no pf_release_window");
 128         vlc_mutex_unlock( &p_intf->object_lock );
 129         vlc_object_release( p_intf );
 130         return;
 131     }
 132
 133     p_intf->pf_release_window( p_intf, p_window );
 134
 135     p_vout->p_parent_intf = NULL;
 136     vlc_mutex_unlock( &p_intf->object_lock );
 137     vlc_object_release( p_intf );
 138 }
 139
 140 int vout_ControlWindow( vout_thread_t *p_vout, void *p_window,
 141                         int i_query, va_list args )
 142 {
 143     intf_thread_t *p_intf = p_vout->p_parent_intf;
 144     int i_ret;
 145
 146     if( !p_intf ) return VLC_EGENERIC;
 147
 148     vlc_mutex_lock( &p_intf->object_lock );
 149     if( p_intf->b_dead )
 150     {
 151         vlc_mutex_unlock( &p_intf->object_lock );
 152         return VLC_EGENERIC;
 153     }
 154
 155     if( !p_intf->pf_control_window )
 156     {
 157         msg_Err( p_vout, "no pf_control_window");
 158         vlc_mutex_unlock( &p_intf->object_lock );
 159         return VLC_EGENERIC;
 160     }
 161
 162     i_ret = p_intf->pf_control_window( p_intf, p_window, i_query, args );
 163     vlc_mutex_unlock( &p_intf->object_lock );
 164     return i_ret;
 165 }
 166
 167 /*****************************************************************************
 168  * vout_IntfInit: called during the vout creation to initialise misc things.
 169  *****************************************************************************/
 170 void vout_IntfInit( vout_thread_t *p_vout )
 171 {
 172     vlc_value_t val, text, old_val;
 173
 174     /* Create a few object variables we'll need later on */
 175     var_Create( p_vout, "snapshot-path", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 176     var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 177     var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 178     var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 179     var_Create( p_vout, "align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 180     var_Create( p_vout, "video-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 181     var_Create( p_vout, "video-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 182
 183     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_ISCOMMAND |
 184                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
 185
 186     text.psz_string = _("Zoom");
 187     var_Change( p_vout, "zoom", VLC_VAR_SETTEXT, &text, NULL );
 188
 189     var_Get( p_vout, "zoom", &old_val );
 190     if( old_val.f_float == 0.25 ||
 191         old_val.f_float == 0.5 ||
 192         old_val.f_float == 1 ||
 193         old_val.f_float == 2 )
 194     {
 195         var_Change( p_vout, "zoom", VLC_VAR_DELCHOICE, &old_val, NULL );
 196     }
 197
 198     val.f_float = 0.25; text.psz_string = _("1:4 Quarter");
 199     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 200     val.f_float = 0.5; text.psz_string = _("1:2 Half");
 201     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 202     val.f_float = 1; text.psz_string = _("1:1 Original");
 203     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 204     val.f_float = 2; text.psz_string = _("2:1 Double");
 205     var_Change( p_vout, "zoom", VLC_VAR_ADDCHOICE, &val, &text );
 206
 207     var_Set( p_vout, "zoom", old_val );
 208
 209     var_AddCallback( p_vout, "zoom", ZoomCallback, NULL );
 210
 211     /* Add a variable to indicate if the window should be on top of others */
 212     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 213     text.psz_string = _("Always on top");
 214     var_Change( p_vout, "video-on-top", VLC_VAR_SETTEXT, &text, NULL );
 215     var_AddCallback( p_vout, "video-on-top", OnTopCallback, NULL );
 216
 217     /* Add a variable to indicate whether we want window decoration or not */
 218     var_Create( p_vout, "video-deco", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 219
 220     /* Add a fullscreen variable */
 221     var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
 222     text.psz_string = _("Fullscreen");
 223     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 224     var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
 225     if( val.b_bool )
 226     {
 227         /* user requested fullscreen */
 228         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 229     }
 230     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 231
 232     /* Mouse coordinates */
 233     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 234     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 235     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 236     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 237     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 238
 239     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 240     val.b_bool = VLC_TRUE;
 241     var_Set( p_vout, "intf-change", val );
 242 }
 243
 244 /*****************************************************************************
 245  * vout_Snapshot: generates a snapshot.
 246  *****************************************************************************/
 247 int vout_Snapshot( vout_thread_t *p_vout, picture_t *p_pic )
 248 {
 249     image_handler_t *p_image = image_HandlerCreate( p_vout );
 250     video_format_t fmt_in = {0}, fmt_out = {0};
 251     char *psz_filename;
 252     subpicture_t *p_subpic;
 253     picture_t *p_pif;
 254     vlc_value_t val;
 255     int i_ret;
 256
 257     var_Get( p_vout, "snapshot-path", &val );
 258     if( val.psz_string && !*val.psz_string )
 259     {
 260         free( val.psz_string );
 261         val.psz_string = 0;
 262     }
 263     if( !val.psz_string && p_vout->p_vlc->psz_homedir )
 264     {
 265         asprintf( &val.psz_string, "%s/" CONFIG_DIR,
 266                   p_vout->p_vlc->psz_homedir );
 267     }
 268     if( !val.psz_string )
 269     {
 270         msg_Err( p_vout, "no directory specified for snapshots" );
 271         return VLC_EGENERIC;
 272     }
 273
 274     asprintf( &psz_filename, "%s/vlcsnap-%u.png", val.psz_string,
 275               (unsigned int)(p_pic->date / 100000) & 0xFFFFFF );
 276     free( val.psz_string );
 277
 278     /* Save the snapshot */
 279     fmt_in.i_chroma = p_vout->render.i_chroma;
 280     fmt_in.i_width = p_vout->render.i_width;
 281     fmt_in.i_height = p_vout->render.i_height;
 282     i_ret = image_WriteUrl( p_image, p_pic, &fmt_in, &fmt_out, psz_filename );
 283     if( i_ret != VLC_SUCCESS )
 284     {
 285         msg_Err( p_vout, "could not create snapshot %s", psz_filename );
 286         free( psz_filename );
 287         image_HandlerDelete( p_image );
 288         return VLC_EGENERIC;
 289     }
 290
 291     msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
 292     free( psz_filename );
 293
 294     /* Inject a subpicture with the snapshot */
 295     fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 296     fmt_out.i_width = fmt_out.i_visible_width = p_vout->render.i_width;
 297     fmt_out.i_height = fmt_out.i_visible_height = p_vout->render.i_height;
 298     fmt_out.i_aspect = VOUT_ASPECT_FACTOR;
 299     p_pif = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
 300     image_HandlerDelete( p_image );
 301     if( !p_pif ) return VLC_EGENERIC;
 302
 303     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
 304     if( p_subpic == NULL )
 305     {
 306          p_pif->pf_release( p_pif );
 307          return VLC_EGENERIC;
 308     }
 309
 310     p_subpic->i_channel = 0;
 311     p_subpic->i_start = mdate();
 312     p_subpic->i_stop = mdate() + 4000000;
 313     p_subpic->b_ephemer = VLC_TRUE;
 314     p_subpic->b_fade = VLC_TRUE;
 315     p_subpic->i_original_picture_width = p_vout->render.i_width * 4;
 316     p_subpic->i_original_picture_height = p_vout->render.i_height * 4;
 317
 318     p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
 319     vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture, p_pif );
 320     p_pif->pf_release( p_pif );
 321
 322     spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
 323
 324     return VLC_SUCCESS;
 325 }
 326
 327 /*****************************************************************************
 328  * vout_ControlDefault: default methods for video output control.
 329  *****************************************************************************/
 330 int vout_vaControlDefault( vout_thread_t *p_vout, int i_query, va_list args )
 331 {
 332     switch( i_query )
 333     {
 334     case VOUT_REPARENT:
 335     case VOUT_CLOSE:
 336         if( p_vout->p_parent_intf )
 337         {
 338             vlc_object_release( p_vout->p_parent_intf );
 339             p_vout->p_parent_intf = NULL;
 340         }
 341         return VLC_SUCCESS;
 342         break;
 343
 344     case VOUT_SNAPSHOT:
 345         p_vout->b_snapshot = VLC_TRUE;
 346         return VLC_SUCCESS;
 347         break;
 348
 349     default:
 350         msg_Dbg( p_vout, "control query not supported" );
 351         return VLC_EGENERIC;
 352     }
 353 }
 354
 355 /*****************************************************************************
 356  * Object variables callbacks
 357  *****************************************************************************/
 358 static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
 359                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 360 {
 361     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 362     vout_Control( p_vout, VOUT_SET_ZOOM, newval.f_float );
 363     return VLC_SUCCESS;
 364 }
 365
 366 static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
 367                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 368 {
 369     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 370     playlist_t *p_playlist;
 371     vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, newval.b_bool );
 372
 373     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 374                                                  FIND_PARENT );
 375     if( p_playlist )
 376     {
 377         /* Modify playlist as well because the vout might have to be restarted */
 378         var_Create( p_playlist, "video-on-top", VLC_VAR_BOOL );
 379         var_Set( p_playlist, "video-on-top", newval );
 380
 381         vlc_object_release( p_playlist );
 382     }
 383     return VLC_SUCCESS;
 384 }
 385
 386 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
 387                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 388 {
 389     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 390     playlist_t *p_playlist;
 391     vlc_value_t val;
 392
 393     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 394
 395     p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 396                                                  FIND_PARENT );
 397     if( p_playlist )
 398     {
 399         /* Modify playlist as well because the vout might have to be restarted */
 400         var_Create( p_playlist, "fullscreen", VLC_VAR_BOOL );
 401         var_Set( p_playlist, "fullscreen", newval );
 402
 403         vlc_object_release( p_playlist );
 404     }
 405
 406     /* Disable "always on top" in fullscreen mode */
 407     var_Get( p_vout, "video-on-top", &val );
 408     if( newval.b_bool && val.b_bool )
 409     {
 410         val.b_bool = VLC_FALSE;
 411         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
 412     }
 413     else if( !newval.b_bool && val.b_bool )
 414     {
 415         vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
 416     }
 417
 418     val.b_bool = VLC_TRUE;
 419     var_Set( p_vout, "intf-change", val );
 420     return VLC_SUCCESS;
 421 }