git.sesse.net Git - vlc/blob - plugins/x11/vout_xvideo.c

   1 /*****************************************************************************
   2  * vout_xvideo.c: Xvideo video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998, 1999, 2000, 2001 VideoLAN
   5  * $Id: vout_xvideo.c,v 1.22 2001/07/10 06:07:53 gbazin Exp $
   6  *
   7  * Authors: Shane Harper <shanegh@optusnet.com.au>
   8  *          Vincent Seguin <seguin@via.ecp.fr>
   9  *          Samuel Hocevar <sam@zoy.org>
  10  *          David Kennedy <dkennedy@tinytoad.com>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  25  *****************************************************************************/
  26
  27 #define MODULE_NAME xvideo
  28 #include "modules_inner.h"
  29
  30 /*****************************************************************************
  31  * Preamble
  32  *****************************************************************************/
  33 #include "defs.h"
  34
  35 #include <errno.h>                                                 /* ENOMEM */
  36 #include <stdlib.h>                                                /* free() */
  37 #include <string.h>                                            /* strerror() */
  38
  39 #ifdef HAVE_MACHINE_PARAM_H
  40 /* BSD */
  41 #include <machine/param.h>
  42 #include <sys/types.h>                                     /* typedef ushort */
  43 #include <sys/ipc.h>
  44 #endif
  45
  46 #ifndef WIN32
  47 #include <netinet/in.h>                               /* BSD: struct in_addr */
  48 #endif
  49
  50 #include <sys/shm.h>                                   /* shmget(), shmctl() */
  51 #include <X11/Xlib.h>
  52 #include <X11/Xutil.h>
  53 #include <X11/keysym.h>
  54 #include <X11/extensions/XShm.h>
  55 #include <X11/extensions/Xv.h>
  56 #include <X11/extensions/Xvlib.h>
  57
  58 #include "config.h"
  59 #include "common.h"
  60 #include "threads.h"
  61 #include "mtime.h"
  62 #include "tests.h"
  63
  64 #include "video.h"
  65 #include "video_output.h"
  66
  67 #include "interface.h"
  68 #include "intf_msg.h"
  69
  70 #include "netutils.h"                                 /* network_ChannelJoin */
  71
  72 #include "main.h"
  73
  74 #include "stream_control.h"                 /* needed by input_ext-intf.h... */
  75 #include "input_ext-intf.h"
  76
  77 #include "modules.h"
  78 #include "modules_export.h"
  79
  80 #define GUID_YUV12_PLANAR 0x32315659
  81
  82
  83 /*****************************************************************************
  84  * vout_sys_t: video output X11 method descriptor
  85  *****************************************************************************
  86  * This structure is part of the video output thread descriptor.
  87  * It describes the XVideo specific properties of an output thread.
  88  *****************************************************************************/
  89 typedef struct vout_sys_s
  90 {
  91     /* User settings */
  92 #if 0
  93     /* this plugin (currently) requires the SHM Ext... */
  94     boolean_t           b_shm;               /* shared memory extension flag */
  95 #endif
  96
  97     /* Internal settings and properties */
  98     Display *           p_display;                        /* display pointer */
  99     int                 i_screen;                           /* screen number */
 100     Window              window;                               /* root window */
 101     GC                  gc;              /* graphic context instance handler */
 102     Window              yuv_window;   /* sub-window for displaying yuv video
 103                                                                         data */
 104     GC                  yuv_gc;
 105     int                 xv_port;
 106
 107     /* Display buffers and shared memory information */
 108     /* Note: only 1 buffer... Xv ext does double buffering. */
 109     XvImage *           p_xvimage;
 110     int                 i_image_width;
 111     int                 i_image_height;
 112                                 /* i_image_width & i_image_height reflect the
 113                                  * size of the XvImage. They are used by
 114                                  * vout_Display() to check if the image to be
 115                                  * displayed can use the current XvImage. */
 116     XShmSegmentInfo     shm_info;       /* shared memory zone information */
 117
 118     /* X11 generic properties */
 119     Atom                wm_protocols;
 120     Atom                wm_delete_window;
 121
 122     int                 i_window_width;              /* width of main window */
 123     int                 i_window_height;            /* height of main window */
 124
 125
 126     /* Screen saver properties */
 127     int                 i_ss_timeout;                             /* timeout */
 128     int                 i_ss_interval;           /* interval between changes */
 129     int                 i_ss_blanking;                      /* blanking mode */
 130     int                 i_ss_exposure;                      /* exposure mode */
 131
 132     /* Mouse pointer properties */
 133     boolean_t           b_mouse_pointer_visible;
 134     mtime_t             i_time_mouse_last_moved; /* used to auto-hide pointer*/
 135
 136 } vout_sys_t;
 137
 138 /* Fullscreen needs to be able to hide the wm decorations */
 139 #define MWM_HINTS_DECORATIONS   (1L << 1)
 140 #define PROP_MWM_HINTS_ELEMENTS 5
 141 typedef struct mwmhints_s
 142 {
 143     u32 flags;
 144     u32 functions;
 145     u32 decorations;
 146     s32 input_mode;
 147     u32 status;
 148 } mwmhints_t;
 149
 150 /*****************************************************************************
 151  * Local prototypes
 152  *****************************************************************************/
 153 static int  vout_Probe     ( probedata_t * );
 154 static int  vout_Create    ( vout_thread_t * );
 155 static int  vout_Init      ( vout_thread_t * );
 156 static void vout_End       ( vout_thread_t * );
 157 static void vout_Destroy   ( vout_thread_t * );
 158 static int  vout_Manage    ( vout_thread_t * );
 159 static void vout_Display   ( vout_thread_t * );
 160 static void vout_SetPalette( vout_thread_t *, u16 *, u16 *, u16 *, u16 * );
 161
 162 static int  XVideoCreateWindow       ( vout_thread_t * );
 163 static void XVideoDestroyWindow      ( vout_thread_t *p_vout );
 164 static int  XVideoUpdateImgSizeIfRequired( vout_thread_t *p_vout );
 165 static int  XVideoCreateShmImage     ( Display* dpy, int xv_port,
 166                                        XvImage **pp_xvimage,
 167                                        XShmSegmentInfo *p_shm_info,
 168                                        int i_width, int i_height );
 169 static void XVideoDestroyShmImage    ( vout_thread_t *, XvImage *,
 170                                        XShmSegmentInfo * );
 171 static void XVideoSetMousePointer    ( const vout_thread_t * );
 172 static void XVideoEnableScreenSaver  ( vout_thread_t * );
 173 static void XVideoDisableScreenSaver ( vout_thread_t * );
 174 /*static void XVideoSetAttribute       ( vout_thread_t *, char *, float );*/
 175
 176 static int  XVideoCheckForXv         ( Display * );
 177 static int  XVideoGetPort            ( Display * );
 178 static void XVideoOutputCoords       ( const picture_t *, const boolean_t,
 179                                        const int, const int,
 180                                        int *, int *, int *, int * );
 181 static void XVideoDisplay            ( vout_thread_t * );
 182
 183 /*****************************************************************************
 184  * Functions exported as capabilities. They are declared as static so that
 185  * we don't pollute the namespace too much.
 186  *****************************************************************************/
 187 void _M( vout_getfunctions )( function_list_t * p_function_list )
 188 {
 189     p_function_list->pf_probe = vout_Probe;
 190     p_function_list->functions.vout.pf_create     = vout_Create;
 191     p_function_list->functions.vout.pf_init       = vout_Init;
 192     p_function_list->functions.vout.pf_end        = vout_End;
 193     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 194     p_function_list->functions.vout.pf_manage     = vout_Manage;
 195     p_function_list->functions.vout.pf_display    = vout_Display;
 196     p_function_list->functions.vout.pf_setpalette = vout_SetPalette;
 197 }
 198
 199 /*****************************************************************************
 200  * vout_Probe: probe the video driver and return a score
 201  *****************************************************************************
 202  * This returns a score to the plugin manager so that it can select the best
 203  * plugin.
 204  *****************************************************************************/
 205 static int vout_Probe( probedata_t *p_data )
 206 {
 207     if( TestMethod( VOUT_METHOD_VAR, "xvideo" ) )
 208     {
 209         return( 999 );
 210     }
 211
 212     return( 60 );
 213 }
 214
 215 /*****************************************************************************
 216  * vout_Create: allocate XVideo video thread output method
 217  *****************************************************************************
 218  * This function allocate and initialize a XVideo vout method. It uses some of
 219  * the vout properties to choose the window size, and change them according to
 220  * the actual properties of the display.
 221  *****************************************************************************/
 222 static int vout_Create( vout_thread_t *p_vout )
 223 {
 224     char *psz_display;
 225
 226     /* Allocate structure */
 227     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 228     if( p_vout->p_sys == NULL )
 229     {
 230         intf_ErrMsg( "vout error: %s", strerror(ENOMEM) );
 231         return( 1 );
 232     }
 233
 234     /* Open display, unsing 'vlc_display' or DISPLAY environment variable */
 235     psz_display = XDisplayName( main_GetPszVariable( VOUT_DISPLAY_VAR, NULL ) );
 236     p_vout->p_sys->p_display = XOpenDisplay( psz_display );
 237
 238     if( p_vout->p_sys->p_display == NULL )                          /* error */
 239     {
 240         intf_ErrMsg( "vout error: cannot open display %s", psz_display );
 241         free( p_vout->p_sys );
 242         return( 1 );
 243     }
 244     p_vout->p_sys->i_screen = DefaultScreen( p_vout->p_sys->p_display );
 245
 246     p_vout->b_fullscreen
 247         = main_GetIntVariable( VOUT_FULLSCREEN_VAR, VOUT_FULLSCREEN_DEFAULT );
 248
 249     if( !XVideoCheckForXv( p_vout->p_sys->p_display ) )
 250     {
 251         intf_ErrMsg( "vout error: no XVideo extension" );
 252         XCloseDisplay( p_vout->p_sys->p_display );
 253         free( p_vout->p_sys );
 254         return( 1 );
 255     }
 256
 257     /* Spawn base window - this window will include the video output window,
 258      * but also command buttons, subtitles and other indicators */
 259     if( XVideoCreateWindow( p_vout ) )
 260     {
 261         intf_ErrMsg( "vout error: cannot create XVideo window" );
 262         XCloseDisplay( p_vout->p_sys->p_display );
 263         free( p_vout->p_sys );
 264         return( 1 );
 265     }
 266
 267     if( (p_vout->p_sys->xv_port = XVideoGetPort( p_vout->p_sys->p_display ))<0 )
 268     {
 269         XVideoDestroyWindow( p_vout );
 270         XCloseDisplay( p_vout->p_sys->p_display );
 271         free( p_vout->p_sys );
 272         return 1;
 273     }
 274     intf_DbgMsg( "Using xv port %d" , p_vout->p_sys->xv_port );
 275
 276 #if 0
 277     /* XXX The brightness and contrast values should be read from environment
 278      * XXX variables... */
 279     XVideoSetAttribute( p_vout, "XV_BRIGHTNESS", 0.5 );
 280     XVideoSetAttribute( p_vout, "XV_CONTRAST",   0.5 );
 281 #endif
 282
 283     p_vout->p_sys->b_mouse_pointer_visible = 1;
 284
 285     /* Disable screen saver and return */
 286     XVideoDisableScreenSaver( p_vout );
 287
 288     return( 0 );
 289 }
 290
 291 /*****************************************************************************
 292  * vout_Init: initialize XVideo video thread output method
 293  *****************************************************************************/
 294 static int vout_Init( vout_thread_t *p_vout )
 295 {
 296 #ifdef SYS_DARWIN
 297     /* FIXME : As of 2001-03-16, XFree4 for MacOS X does not support Xshm. */
 298     p_vout->p_sys->b_shm = 0;
 299 #endif
 300     p_vout->b_need_render = 0;
 301     p_vout->p_sys->i_image_width = p_vout->p_sys->i_image_height = 0;
 302
 303     return( 0 );
 304 }
 305
 306 /*****************************************************************************
 307  * vout_End: terminate XVideo video thread output method
 308  *****************************************************************************
 309  * Destroy the XvImage. It is called at the end of the thread, but also each
 310  * time the image is resized.
 311  *****************************************************************************/
 312 static void vout_End( vout_thread_t *p_vout )
 313 {
 314     XVideoDestroyShmImage( p_vout, p_vout->p_sys->p_xvimage,
 315                            &p_vout->p_sys->shm_info );
 316 }
 317
 318 /*****************************************************************************
 319  * vout_Destroy: destroy XVideo video thread output method
 320  *****************************************************************************
 321  * Terminate an output method created by vout_Create
 322  *****************************************************************************/
 323 static void vout_Destroy( vout_thread_t *p_vout )
 324 {
 325     XVideoEnableScreenSaver( p_vout );
 326     XVideoDestroyWindow( p_vout );
 327     XCloseDisplay( p_vout->p_sys->p_display );
 328
 329     /* Destroy structure */
 330     free( p_vout->p_sys );
 331 }
 332
 333 /*****************************************************************************
 334  * vout_Manage: handle X11 events
 335  *****************************************************************************
 336  * This function should be called regularly by video output thread. It manages
 337  * X11 events and allows window resizing. It returns a non null value on
 338  * error.
 339  *
 340  * XXX  Should "factor-out" common code in this and the "same" fn in the x11
 341  * XXX  plugin!
 342  *****************************************************************************/
 343 static int vout_Manage( vout_thread_t *p_vout )
 344 {
 345     XEvent      xevent;                                         /* X11 event */
 346     char        i_key;                                    /* ISO Latin-1 key */
 347     KeySym      x_key_symbol;
 348
 349     /* Handle X11 events: ConfigureNotify events are parsed to know if the
 350      * output window's size changed, MapNotify and UnmapNotify to know if the
 351      * window is mapped (and if the display is useful), and ClientMessages
 352      * to intercept window destruction requests */
 353     while( XCheckWindowEvent( p_vout->p_sys->p_display, p_vout->p_sys->window,
 354                               StructureNotifyMask | KeyPressMask |
 355                               ButtonPressMask | ButtonReleaseMask |
 356                               PointerMotionMask, &xevent )
 357            == True )
 358     {
 359         /* ConfigureNotify event: prepare  */
 360         if( (xevent.type == ConfigureNotify)
 361             /*&& ((xevent.xconfigure.width != p_vout->p_sys->i_window_width)
 362                 || (xevent.xconfigure.height != p_vout->p_sys->i_window_height))*/ )
 363         {
 364             /* Update dimensions */
 365             p_vout->p_sys->i_window_width = xevent.xconfigure.width;
 366             p_vout->p_sys->i_window_height = xevent.xconfigure.height;
 367         }
 368         /* MapNotify event: change window status and disable screen saver */
 369         else if( xevent.type == MapNotify)
 370         {
 371             if( (p_vout != NULL) && !p_vout->b_active )
 372             {
 373                 XVideoDisableScreenSaver( p_vout );
 374                 p_vout->b_active = 1;
 375             }
 376         }
 377         /* UnmapNotify event: change window status and enable screen saver */
 378         else if( xevent.type == UnmapNotify )
 379         {
 380             if( (p_vout != NULL) && p_vout->b_active )
 381             {
 382                 XVideoEnableScreenSaver( p_vout );
 383                 p_vout->b_active = 0;
 384             }
 385         }
 386         /* Keyboard event */
 387         else if( xevent.type == KeyPress )
 388         {
 389             /* We may have keys like F1 trough F12, ESC ... */
 390             x_key_symbol = XKeycodeToKeysym( p_vout->p_sys->p_display,
 391                                              xevent.xkey.keycode, 0 );
 392             switch( x_key_symbol )
 393             {
 394                  case XK_Escape:
 395                      p_main->p_intf->b_die = 1;
 396                      break;
 397                  case XK_Menu:
 398                      p_main->p_intf->b_menu_change = 1;
 399                      break;
 400                  default:
 401                      /* "Normal Keys"
 402                       * The reason why I use this instead of XK_0 is that
 403                       * with XLookupString, we don't have to care about
 404                       * keymaps. */
 405
 406                     if( XLookupString( &xevent.xkey, &i_key, 1, NULL, NULL ) )
 407                     {
 408                         switch( i_key )
 409                         {
 410                         case 'q':
 411                         case 'Q':
 412                             p_main->p_intf->b_die = 1;
 413                             break;
 414                         case 'f':
 415                         case 'F':
 416                             p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 417                             break;
 418                         case '0':
 419                             network_ChannelJoin( 0 );
 420                             break;
 421                         case '1':
 422                             network_ChannelJoin( 1 );
 423                             break;
 424                         case '2':
 425                             network_ChannelJoin( 2 );
 426                             break;
 427                         case '3':
 428                             network_ChannelJoin( 3 );
 429                             break;
 430                         case '4':
 431                             network_ChannelJoin( 4 );
 432                             break;
 433                         case '5':
 434                             network_ChannelJoin( 5 );
 435                             break;
 436                         case '6':
 437                             network_ChannelJoin( 6 );
 438                             break;
 439                         case '7':
 440                             network_ChannelJoin( 7 );
 441                             break;
 442                         case '8':
 443                             network_ChannelJoin( 8 );
 444                             break;
 445                         case '9':
 446                             network_ChannelJoin( 9 );
 447                             break;
 448                         default:
 449                             if( intf_ProcessKey( p_main->p_intf,
 450                                                  (char )i_key ) )
 451                             {
 452                                intf_DbgMsg( "unhandled key '%c' (%i)",
 453                                             (char)i_key, i_key );
 454                             }
 455                             break;
 456                         }
 457                     }
 458                 break;
 459             }
 460         }
 461         /* Mouse click */
 462         else if( xevent.type == ButtonPress )
 463         {
 464             switch( ((XButtonEvent *)&xevent)->button )
 465             {
 466                 case Button1:
 467                     /* in this part we will eventually manage
 468                      * clicks for DVD navigation for instance */
 469                     break;
 470             }
 471         }
 472         /* Mouse release */
 473         else if( xevent.type == ButtonRelease )
 474         {
 475             switch( ((XButtonEvent *)&xevent)->button )
 476             {
 477                 case Button3:
 478                     /* FIXME: need locking ! */
 479                     p_main->p_intf->b_menu_change = 1;
 480                     break;
 481             }
 482         }
 483         /* Mouse move */
 484         else if( xevent.type == MotionNotify )
 485         {
 486             p_vout->p_sys->i_time_mouse_last_moved = mdate();
 487             p_vout->p_sys->b_mouse_pointer_visible = 1;
 488             XVideoSetMousePointer( p_vout );
 489         }
 490         /* Other event */
 491         else
 492         {
 493             intf_WarnMsg( 3, "%p -> unhandled event type %d received",
 494                          p_vout, xevent.type );
 495         }
 496     }
 497
 498     /* Handle events for YUV video output sub-window */
 499     while( XCheckWindowEvent( p_vout->p_sys->p_display,
 500                               p_vout->p_sys->yuv_window,
 501                               ExposureMask, &xevent ) == True )
 502     {
 503         /* Window exposed (only handled if stream playback is paused) */
 504         if( xevent.type == Expose )
 505         {
 506             if( ((XExposeEvent *)&xevent)->count == 0 )
 507                 /* (if this is the last a collection of expose events...) */
 508                 if( p_main->p_intf->p_input )
 509                     if( PAUSE_S ==
 510                             p_main->p_intf->p_input->stream.control.i_status )
 511                         XVideoDisplay( p_vout );
 512         }
 513     }
 514
 515     /* ClientMessage event - only WM_PROTOCOLS with WM_DELETE_WINDOW data
 516      * are handled - according to the man pages, the format is always 32
 517      * in this case */
 518     while( XCheckTypedEvent( p_vout->p_sys->p_display,
 519                              ClientMessage, &xevent ) )
 520     {
 521         if( (xevent.xclient.message_type == p_vout->p_sys->wm_protocols)
 522             && (xevent.xclient.data.l[0] == p_vout->p_sys->wm_delete_window ) )
 523         {
 524             p_main->p_intf->b_die = 1;
 525         }
 526         else
 527         {
 528             intf_DbgMsg( "%p -> unhandled ClientMessage received", p_vout );
 529         }
 530     }
 531
 532     if ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 533     {
 534         intf_DbgMsg( "vout: changing full-screen status" );
 535
 536         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 537
 538         /* Get rid of the old window */
 539         XVideoDestroyWindow( p_vout );
 540
 541         /* And create a new one */
 542         if( XVideoCreateWindow( p_vout ) )
 543         {
 544             intf_ErrMsg( "vout error: cannot create X11 window" );
 545             XCloseDisplay( p_vout->p_sys->p_display );
 546
 547             free( p_vout->p_sys );
 548             return( 1 );
 549         }
 550     }
 551
 552
 553     if( (p_vout->i_changes & VOUT_GRAYSCALE_CHANGE))
 554     {
 555         /* FIXME: clear flags ?? */
 556     }
 557
 558     /*
 559      * Size change
 560      */
 561     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 562     {
 563         intf_DbgMsg( "vout: resizing window" );
 564         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 565         /* Nothing to do here...
 566          * vout_Display() detects size changes of the image to be displayed and
 567          * re-creates the XvImage.*/
 568         intf_Msg( "vout: video display resized (%dx%d)",
 569                   p_vout->i_width, p_vout->i_height );
 570     }
 571
 572     /* Autohide Cursor */
 573     if( p_vout->p_sys->b_mouse_pointer_visible &&
 574         mdate() - p_vout->p_sys->i_time_mouse_last_moved > 2000000 )
 575     {
 576         p_vout->p_sys->b_mouse_pointer_visible = 0;
 577         XVideoSetMousePointer( p_vout );
 578     }
 579
 580     return 0;
 581 }
 582
 583 /*****************************************************************************
 584  * vout_Display: displays previously rendered output
 585  *****************************************************************************
 586  * This function sends the currently rendered image to X11 server.
 587  * (The Xv extension takes care of "double-buffering".)
 588  *****************************************************************************/
 589 static void vout_Display( vout_thread_t *p_vout )
 590 {
 591     boolean_t b_draw = 1;
 592     int i_size = p_vout->p_rendered_pic->i_width *
 593                    p_vout->p_rendered_pic->i_height;
 594
 595     if( XVideoUpdateImgSizeIfRequired( p_vout ) )
 596     {
 597         return;
 598     }
 599
 600     switch( p_vout->p_rendered_pic->i_type )
 601     {
 602     case YUV_422_PICTURE:
 603         intf_ErrMsg( "vout error: YUV_422_PICTURE not (yet) supported" );
 604         b_draw = 0;
 605         break;
 606
 607     case YUV_444_PICTURE:
 608         intf_ErrMsg( "vout error: YUV_444_PICTURE not (yet) supported" );
 609         b_draw = 0;
 610         break;
 611
 612     case YUV_420_PICTURE:
 613         memcpy( p_vout->p_sys->p_xvimage->data,
 614                 p_vout->p_rendered_pic->p_y, i_size );
 615         memcpy( p_vout->p_sys->p_xvimage->data + ( i_size ),
 616                 p_vout->p_rendered_pic->p_v, i_size / 4 );
 617         memcpy( p_vout->p_sys->p_xvimage->data + ( i_size ) + ( i_size / 4 ),
 618                 p_vout->p_rendered_pic->p_u, i_size / 4 );
 619         break;
 620     }
 621
 622     if( b_draw )
 623     {
 624         XVideoDisplay( p_vout );
 625     }
 626 }
 627
 628 static void vout_SetPalette( p_vout_thread_t p_vout,
 629                              u16 *red, u16 *green, u16 *blue, u16 *transp )
 630 {
 631     return;
 632 }
 633
 634 /* following functions are local */
 635
 636 /*****************************************************************************
 637  * XVideoUpdateImgSizeIfRequired
 638  *****************************************************************************
 639  * This function checks to see if the image to be displayed is of a different
 640  * size to the last image displayed. If so, the old shm block must be
 641  * destroyed and a new one created.
 642  * Note: the "image size" is the size of the image to be passed to the Xv
 643  * extension (which is probably different to the size of the output window).
 644  *****************************************************************************/
 645 static int XVideoUpdateImgSizeIfRequired( vout_thread_t *p_vout )
 646 {
 647     int i_img_width         = p_vout->p_rendered_pic->i_width;
 648     int i_img_height        = p_vout->p_rendered_pic->i_height;
 649
 650     if( p_vout->p_sys->i_image_width != i_img_width
 651             || p_vout->p_sys->i_image_height != i_img_height )
 652     {
 653         if( p_vout->p_sys->i_image_width != 0
 654              && p_vout->p_sys->i_image_height != 0 )
 655         {
 656             /* Destroy XvImage to change its size */
 657             vout_End( p_vout );
 658         }
 659
 660         p_vout->p_sys->i_image_width  = i_img_width;
 661         p_vout->p_sys->i_image_height = i_img_height;
 662
 663         /* Create XvImage using XShm extension */
 664         if( XVideoCreateShmImage( p_vout->p_sys->p_display,
 665                                   p_vout->p_sys->xv_port,
 666                                   &p_vout->p_sys->p_xvimage,
 667                                   &p_vout->p_sys->shm_info,
 668                                   i_img_width, i_img_height ) )
 669         {
 670             intf_ErrMsg( "vout: failed to create xvimage." );
 671             p_vout->p_sys->i_image_width = 0;
 672             return( 1 );
 673         }
 674
 675         /* Set bytes per line and initialize buffers */
 676         p_vout->i_bytes_per_line =
 677             (p_vout->p_sys->p_xvimage->data_size) /
 678             (p_vout->p_sys->p_xvimage->height);
 679
 680         /* p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_xvimage->data ); */
 681     }
 682
 683     return( 0 );
 684 }
 685
 686 /*****************************************************************************
 687  * XVideoCheckForXv: check for the XVideo extension
 688  *****************************************************************************/
 689 static int XVideoCheckForXv( Display *dpy )
 690 {
 691     unsigned int i;
 692
 693     switch( XvQueryExtension( dpy, &i, &i, &i, &i, &i ) )
 694     {
 695         case Success:
 696             return( 1 );
 697
 698         case XvBadExtension:
 699             intf_ErrMsg( "vout error: XvBadExtension" );
 700             return( 0 );
 701
 702         case XvBadAlloc:
 703             intf_ErrMsg( "vout error: XvBadAlloc" );
 704             return( 0 );
 705
 706         default:
 707             intf_ErrMsg( "vout error: XvQueryExtension failed" );
 708             return( 0 );
 709     }
 710 }
 711
 712 /*****************************************************************************
 713  * XVideoCreateWindow: open and set-up XVideo main window
 714  *****************************************************************************/
 715 static int XVideoCreateWindow( vout_thread_t *p_vout )
 716 {
 717     XSizeHints              xsize_hints;
 718     XSetWindowAttributes    xwindow_attributes;
 719     XGCValues               xgcvalues;
 720     XEvent                  xevent;
 721     Atom                    prop;
 722     mwmhints_t              mwmhints;
 723
 724     boolean_t               b_expose;
 725     boolean_t               b_configure_notify;
 726     boolean_t               b_map_notify;
 727
 728
 729     /* Set main window's size */
 730     /* If we're full screen, we're full screen! */
 731     if( p_vout->b_fullscreen )
 732     {
 733         p_vout->p_sys->i_window_width = DisplayWidth( p_vout->p_sys->p_display,
 734                                                       p_vout->p_sys->i_screen );
 735         p_vout->p_sys->i_window_height =  DisplayHeight( p_vout->p_sys->p_display,
 736                                                          p_vout->p_sys->i_screen );
 737 /*      p_vout->i_width =  p_vout->p_sys->i_window_width;
 738         p_vout->i_height = p_vout->p_sys->i_window_height; */
 739     }
 740     else
 741     {
 742         p_vout->p_sys->i_window_width =  main_GetIntVariable( VOUT_WIDTH_VAR,
 743                                                        VOUT_WIDTH_DEFAULT );
 744         p_vout->p_sys->i_window_height = main_GetIntVariable( VOUT_HEIGHT_VAR,
 745                                                        VOUT_HEIGHT_DEFAULT );
 746     }
 747
 748     /* Prepare window manager hints and properties */
 749     xsize_hints.base_width          = p_vout->p_sys->i_window_width;
 750     xsize_hints.base_height         = p_vout->p_sys->i_window_height;
 751     xsize_hints.flags               = PSize;
 752     p_vout->p_sys->wm_protocols     = XInternAtom( p_vout->p_sys->p_display,
 753                                                    "WM_PROTOCOLS", True );
 754     p_vout->p_sys->wm_delete_window = XInternAtom( p_vout->p_sys->p_display,
 755                                                    "WM_DELETE_WINDOW", True );
 756
 757     /* Prepare window attributes */
 758     xwindow_attributes.background_pixel = BlackPixel( p_vout->p_sys->p_display,
 759                                                       p_vout->p_sys->i_screen );
 760
 761     xwindow_attributes.event_mask = ExposureMask | StructureNotifyMask;
 762
 763     /* Create the window and set hints - the window must receive ConfigureNotify
 764      * events, and, until it is displayed, Expose and MapNotify events. */
 765     p_vout->p_sys->window =
 766             XCreateWindow( p_vout->p_sys->p_display,
 767                            DefaultRootWindow( p_vout->p_sys->p_display ),
 768                            0, 0,
 769                            p_vout->p_sys->i_window_width,
 770                            p_vout->p_sys->i_window_height, 1,
 771                            0, InputOutput, 0,
 772                            CWBackPixel | CWEventMask,
 773                            &xwindow_attributes );
 774
 775     if ( p_vout->b_fullscreen )
 776     {
 777         prop = XInternAtom(p_vout->p_sys->p_display, "_MOTIF_WM_HINTS", False);
 778         mwmhints.flags = MWM_HINTS_DECORATIONS;
 779         mwmhints.decorations = 0;
 780         XChangeProperty( p_vout->p_sys->p_display, p_vout->p_sys->window,
 781                          prop, prop, 32, PropModeReplace,
 782                          (unsigned char *)&mwmhints, PROP_MWM_HINTS_ELEMENTS );
 783
 784         XSetTransientForHint( p_vout->p_sys->p_display,
 785                               p_vout->p_sys->window, None );
 786         XRaiseWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
 787     }
 788
 789
 790     /* Set window manager hints and properties: size hints, command,
 791      * window's name, and accepted protocols */
 792     XSetWMNormalHints( p_vout->p_sys->p_display, p_vout->p_sys->window,
 793                        &xsize_hints );
 794     XSetCommand( p_vout->p_sys->p_display, p_vout->p_sys->window,
 795                  p_main->ppsz_argv, p_main->i_argc );
 796     XStoreName( p_vout->p_sys->p_display, p_vout->p_sys->window,
 797                 VOUT_TITLE " (XVideo output)" );
 798
 799     if( (p_vout->p_sys->wm_protocols == None)        /* use WM_DELETE_WINDOW */
 800         || (p_vout->p_sys->wm_delete_window == None)
 801         || !XSetWMProtocols( p_vout->p_sys->p_display, p_vout->p_sys->window,
 802                              &p_vout->p_sys->wm_delete_window, 1 ) )
 803     {
 804         /* WM_DELETE_WINDOW is not supported by window manager */
 805         intf_Msg( "vout error: missing or bad window manager" );
 806     }
 807
 808     /* Creation of a graphic context that doesn't generate a GraphicsExpose
 809      * event when using functions like XCopyArea */
 810     xgcvalues.graphics_exposures = False;
 811     p_vout->p_sys->gc = XCreateGC( p_vout->p_sys->p_display,
 812                                    p_vout->p_sys->window,
 813                                    GCGraphicsExposures, &xgcvalues);
 814
 815     /* Send orders to server, and wait until window is displayed - three
 816      * events must be received: a MapNotify event, an Expose event allowing
 817      * drawing in the window, and a ConfigureNotify to get the window
 818      * dimensions. Once those events have been received, only ConfigureNotify
 819      * events need to be received. */
 820     b_expose = 0;
 821     b_configure_notify = 0;
 822     b_map_notify = 0;
 823     XMapWindow( p_vout->p_sys->p_display, p_vout->p_sys->window);
 824     do
 825     {
 826         XNextEvent( p_vout->p_sys->p_display, &xevent);
 827         if( (xevent.type == Expose)
 828             && (xevent.xexpose.window == p_vout->p_sys->window) )
 829         {
 830             b_expose = 1;
 831         }
 832         else if( (xevent.type == MapNotify)
 833                  && (xevent.xmap.window == p_vout->p_sys->window) )
 834         {
 835             b_map_notify = 1;
 836         }
 837         else if( (xevent.type == ConfigureNotify)
 838                  && (xevent.xconfigure.window == p_vout->p_sys->window) )
 839         {
 840             b_configure_notify = 1;
 841             p_vout->p_sys->i_window_width = xevent.xconfigure.width;
 842             p_vout->p_sys->i_window_height = xevent.xconfigure.height;
 843         }
 844     } while( !( b_expose && b_configure_notify && b_map_notify ) );
 845
 846     XSelectInput( p_vout->p_sys->p_display, p_vout->p_sys->window,
 847                   StructureNotifyMask | KeyPressMask |
 848                   ButtonPressMask | ButtonReleaseMask |
 849                   PointerMotionMask );
 850
 851     if( p_vout->b_fullscreen )
 852     {
 853         XSetInputFocus( p_vout->p_sys->p_display, p_vout->p_sys->window,
 854                         RevertToNone, CurrentTime );
 855         XMoveWindow( p_vout->p_sys->p_display, p_vout->p_sys->window, 0, 0 );
 856     }
 857
 858     /* Create YUV output sub-window. */
 859     p_vout->p_sys->yuv_window=XCreateSimpleWindow( p_vout->p_sys->p_display,
 860                          p_vout->p_sys->window, 0, 0, 1, 1, 0,
 861                          BlackPixel( p_vout->p_sys->p_display,
 862                                          p_vout->p_sys->i_screen ),
 863                          WhitePixel( p_vout->p_sys->p_display,
 864                                          p_vout->p_sys->i_screen ) );
 865
 866     p_vout->p_sys->yuv_gc = XCreateGC( p_vout->p_sys->p_display,
 867                                         p_vout->p_sys->yuv_window,
 868                                         GCGraphicsExposures, &xgcvalues );
 869
 870     XSetWindowBackground( p_vout->p_sys->p_display, p_vout->p_sys->yuv_window,
 871              BlackPixel(p_vout->p_sys->p_display, p_vout->p_sys->i_screen ) );
 872
 873     XMapWindow( p_vout->p_sys->p_display, p_vout->p_sys->yuv_window );
 874     XSelectInput( p_vout->p_sys->p_display, p_vout->p_sys->yuv_window,
 875                   ExposureMask );
 876
 877
 878     XVideoSetMousePointer( p_vout );
 879
 880     return( 0 );
 881 }
 882
 883 static void XVideoDestroyWindow( vout_thread_t *p_vout )
 884 {
 885     XFreeGC( p_vout->p_sys->p_display, p_vout->p_sys->yuv_gc );
 886     XDestroyWindow( p_vout->p_sys->p_display, p_vout->p_sys->yuv_window );
 887
 888     XUnmapWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
 889     XFreeGC( p_vout->p_sys->p_display, p_vout->p_sys->gc );
 890     XDestroyWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
 891 }
 892
 893 /*****************************************************************************
 894  * XVideoCreateShmImage: create an XvImage using shared memory extension
 895  *****************************************************************************
 896  * Prepare an XvImage for display function.
 897  * The order of the operations respects the recommandations of the mit-shm
 898  * document by J.Corbet and K.Packard. Most of the parameters were copied from
 899  * there.
 900  *****************************************************************************/
 901 static int XVideoCreateShmImage( Display* dpy, int xv_port,
 902                                     XvImage **pp_xvimage,
 903                                     XShmSegmentInfo *p_shm_info,
 904                                     int i_width, int i_height )
 905 {
 906     *pp_xvimage = XvShmCreateImage( dpy, xv_port,
 907                                     GUID_YUV12_PLANAR, 0,
 908                                     i_width, i_height,
 909                                     p_shm_info );
 910     if( !(*pp_xvimage) )
 911     {
 912         intf_ErrMsg( "vout error: XvShmCreateImage failed." );
 913         return( -1 );
 914     }
 915
 916     p_shm_info->shmid    = shmget( IPC_PRIVATE, (*pp_xvimage)->data_size,
 917                                    IPC_CREAT | 0777 );
 918     if( p_shm_info->shmid < 0)                                      /* error */
 919     {
 920         intf_ErrMsg( "vout error: cannot allocate shared image data (%s)",
 921                     strerror(errno));
 922         return( 1 );
 923     }
 924
 925     p_shm_info->shmaddr  = (*pp_xvimage)->data = shmat( p_shm_info->shmid,
 926                                                         0, 0 );
 927     p_shm_info->readOnly = False;
 928
 929 #if 0
 930     /* Mark the shm segment to be removed when there will be no more
 931      * attachements, so it is automatic on process exit or after shmdt */
 932     shmctl( p_shm_info->shmid, IPC_RMID, 0 );
 933 #endif
 934
 935     if( !XShmAttach( dpy, p_shm_info ) )
 936     {
 937         intf_ErrMsg( "vout error: XShmAttach failed" );
 938         shmctl( p_shm_info->shmid, IPC_RMID, 0 );
 939         shmdt( p_shm_info->shmaddr );
 940         return( -1 );
 941     }
 942
 943     /* Send image to X server. This instruction is required, since having
 944      * built a Shm XImage and not using it causes an error on XCloseDisplay */
 945     XFlush( dpy );
 946
 947     return( 0 );
 948 }
 949
 950 /*****************************************************************************
 951  * XVideoDestroyShmImage
 952  *****************************************************************************
 953  * Destroy XImage AND associated data. Detach shared memory segment from
 954  * server and process, then free it. If pointer is NULL, the image won't be
 955  * destroyed (see vout_ManageOutputMethod())
 956  *****************************************************************************/
 957 static void XVideoDestroyShmImage( vout_thread_t *p_vout, XvImage *p_xvimage,
 958                                    XShmSegmentInfo *p_shm_info )
 959 {
 960     /* If pointer is NULL, do nothing */
 961     if( p_xvimage == NULL )
 962     {
 963         return;
 964     }
 965
 966     XShmDetach( p_vout->p_sys->p_display, p_shm_info );/* detach from server */
 967 #if 0
 968     XDestroyImage( p_ximage ); /* XXX */
 969 #endif
 970
 971     shmctl( p_shm_info->shmid, IPC_RMID, 0 );
 972
 973     if( shmdt( p_shm_info->shmaddr ) )  /* detach shared memory from process */
 974     {
 975         intf_ErrMsg( "vout error: cannot detach shared memory (%s)",
 976                      strerror(errno) );
 977     }
 978 }
 979
 980 /*****************************************************************************
 981  * XVideoEnableScreenSaver: enable screen saver
 982  *****************************************************************************
 983  * This function enable the screen saver on a display after it had been
 984  * disabled by XDisableScreenSaver. Both functions use a counter mechanism to
 985  * know wether the screen saver can be activated or not: if n successive calls
 986  * are made to XDisableScreenSaver, n successive calls to XEnableScreenSaver
 987  * will be required before the screen saver could effectively be activated.
 988  *****************************************************************************/
 989 void XVideoEnableScreenSaver( vout_thread_t *p_vout )
 990 {
 991     intf_DbgMsg( "intf: enabling screen saver" );
 992     XSetScreenSaver( p_vout->p_sys->p_display, p_vout->p_sys->i_ss_timeout,
 993                      p_vout->p_sys->i_ss_interval,
 994                      p_vout->p_sys->i_ss_blanking,
 995                      p_vout->p_sys->i_ss_exposure );
 996 }
 997
 998 /*****************************************************************************
 999  * XVideoDisableScreenSaver: disable screen saver
1000  *****************************************************************************
1001  * See XEnableScreenSaver
1002  *****************************************************************************/
1003 void XVideoDisableScreenSaver( vout_thread_t *p_vout )
1004 {
1005     /* Save screen saver informations */
1006     XGetScreenSaver( p_vout->p_sys->p_display, &p_vout->p_sys->i_ss_timeout,
1007                      &p_vout->p_sys->i_ss_interval,
1008                      &p_vout->p_sys->i_ss_blanking,
1009                      &p_vout->p_sys->i_ss_exposure );
1010
1011     /* Disable screen saver */
1012     intf_DbgMsg( "intf: disabling screen saver" );
1013     XSetScreenSaver( p_vout->p_sys->p_display, 0,
1014                      p_vout->p_sys->i_ss_interval,
1015                      p_vout->p_sys->i_ss_blanking,
1016                      p_vout->p_sys->i_ss_exposure );
1017 }
1018
1019 /*****************************************************************************
1020  * XVideoSetMousePointer: hide or show the mouse pointer
1021  *****************************************************************************
1022  * This function hides the X pointer if requested.
1023  *****************************************************************************/
1024 void XVideoSetMousePointer( const vout_thread_t *p_vout )
1025 {
1026     static Cursor blank_cursor;
1027     static boolean_t b_created_blank_cursor = 0;
1028
1029     if( !p_vout->p_sys->b_mouse_pointer_visible )
1030     {
1031         if( !b_created_blank_cursor )
1032         {
1033             XColor color;
1034             Pixmap blank = XCreatePixmap( p_vout->p_sys->p_display,
1035                                DefaultRootWindow(p_vout->p_sys->p_display),
1036                                1, 1, 1 );
1037
1038             XParseColor( p_vout->p_sys->p_display,
1039                          XCreateColormap( p_vout->p_sys->p_display,
1040                                           DefaultRootWindow(
1041                                                   p_vout->p_sys->p_display ),
1042                                           DefaultVisual(
1043                                                   p_vout->p_sys->p_display,
1044                                                   p_vout->p_sys->i_screen ),
1045                                           AllocNone ),
1046                          "black", &color );
1047
1048             blank_cursor = XCreatePixmapCursor( p_vout->p_sys->p_display,
1049                            blank, blank, &color, &color, 1, 1 );
1050
1051             b_created_blank_cursor = 1;
1052         }
1053         XDefineCursor( p_vout->p_sys->p_display,
1054                        p_vout->p_sys->window, blank_cursor );
1055     }
1056     else
1057     {
1058         XUndefineCursor( p_vout->p_sys->p_display, p_vout->p_sys->window );
1059     }
1060 }
1061
1062 /* This based on some code in SetBufferPicture... At the moment it's only
1063  * used by the xvideo plugin, but others may want to use it. */
1064 static void XVideoOutputCoords( const picture_t *p_pic, const boolean_t scale,
1065                                 const int win_w, const int win_h,
1066                                 int *dx, int *dy, int *w, int *h)
1067 {
1068     if( !scale )
1069     {
1070         *w = p_pic->i_width; *h = p_pic->i_height;
1071     }
1072     else
1073     {
1074         *w = win_w;
1075         switch( p_pic->i_aspect_ratio )
1076         {
1077             case AR_3_4_PICTURE:
1078                 *h = win_w * 3 / 4;
1079                 break;
1080
1081             case AR_16_9_PICTURE:
1082                 *h = win_w * 9 / 16;
1083                 break;
1084
1085             case AR_221_1_PICTURE:
1086                 *h = win_w * 100 / 221;
1087                 break;
1088
1089             case AR_SQUARE_PICTURE:
1090             default:
1091                 *h = win_w * p_pic->i_height / p_pic->i_width;
1092                 break;
1093         }
1094
1095         if( *h > win_h )
1096         {
1097             *h = win_h;
1098             switch( p_pic->i_aspect_ratio )
1099             {
1100                 case AR_3_4_PICTURE:
1101                     *w = win_h * 4 / 3;
1102                     break;
1103
1104                 case AR_16_9_PICTURE:
1105                     *w = win_h * 16 / 9;
1106                     break;
1107
1108                 case AR_221_1_PICTURE:
1109                     *w = win_h * 221 / 100;
1110                     break;
1111
1112                 case AR_SQUARE_PICTURE:
1113                 default:
1114                     *w = win_h * p_pic->i_width / p_pic->i_height;
1115                     break;
1116             }
1117         }
1118     }
1119
1120     /* Set picture position */
1121     *dx = (win_w - *w) / 2;
1122     *dy = (win_h - *h) / 2;
1123 }
1124
1125
1126 static int XVideoGetPort( Display *dpy )
1127 {
1128     int            i, i_adaptors;
1129     int            xv_port = -1;
1130     XvAdaptorInfo *adaptor_info;
1131
1132     switch( XvQueryAdaptors( dpy, DefaultRootWindow( dpy ),
1133                              &i_adaptors, &adaptor_info ) )
1134     {
1135         case Success:
1136             break;
1137
1138         case XvBadExtension:
1139             intf_ErrMsg( "vout error: XvBadExtension for XvQueryAdaptors" );
1140             return( -1 );
1141
1142         case XvBadAlloc:
1143             intf_ErrMsg( "vout error: XvBadAlloc for XvQueryAdaptors" );
1144             return( -1 );
1145
1146         default:
1147             intf_ErrMsg( "vout error: XvQueryAdaptors failed" );
1148             return( -1 );
1149     }
1150
1151     for( i=0; i < i_adaptors && xv_port == -1; ++i )
1152     {
1153         if( ( adaptor_info[ i ].type & XvInputMask ) &&
1154             ( adaptor_info[ i ].type & XvImageMask ) )
1155         {
1156             /* check that port supports YUV12 planar format... */
1157             int port = adaptor_info[ i ].base_id;
1158             int i_num_formats, i;
1159             XvImageFormatValues *imageFormats;
1160
1161             imageFormats = XvListImageFormats( dpy, port, &i_num_formats );
1162
1163             for( i=0; i < i_num_formats && xv_port == -1; ++i )
1164             {
1165                 if( imageFormats[ i ].id == GUID_YUV12_PLANAR )
1166                 {
1167                     xv_port = port;
1168                 }
1169             }
1170
1171             if( xv_port == -1 )
1172             {
1173                 intf_WarnMsg( 3, "vout: XVideo image input port %d "
1174                         "does not support the YUV12 planar format which is "
1175                         "currently required by the xvideo output plugin",
1176                         port );
1177             }
1178
1179             if( imageFormats )
1180             {
1181                 XFree( imageFormats );
1182             }
1183         }
1184     }
1185
1186     if( i_adaptors > 0 )
1187     {
1188         XvFreeAdaptorInfo(adaptor_info);
1189     }
1190
1191     if( xv_port == -1 )
1192     {
1193         intf_ErrMsg( "vout error: no suitable Xvideo image input port" );
1194     }
1195
1196     return( xv_port );
1197 }
1198
1199
1200 /*****************************************************************************
1201  * XVideoDisplay: display image
1202  *****************************************************************************
1203  * This function displays the image stored in p_vout->p_sys->p_xvimage.
1204  * The image is scaled to fit in the output window (and to have the correct
1205  * aspect ratio).
1206  *****************************************************************************/
1207 static void XVideoDisplay( vout_thread_t *p_vout )
1208 {
1209     int     i_dest_width, i_dest_height, i_dest_x, i_dest_y;
1210
1211     if( !p_vout->p_sys->p_xvimage )
1212     {
1213         return;
1214     }
1215
1216     XVideoOutputCoords( p_vout->p_rendered_pic, p_vout->b_scale,
1217                         p_vout->p_sys->i_window_width,
1218                         p_vout->p_sys->i_window_height,
1219                         &i_dest_x, &i_dest_y,
1220                         &i_dest_width, &i_dest_height);
1221
1222     XvShmPutImage( p_vout->p_sys->p_display, p_vout->p_sys->xv_port,
1223                    p_vout->p_sys->yuv_window, p_vout->p_sys->gc,
1224                    p_vout->p_sys->p_xvimage,
1225                    0 /*src_x*/, 0 /*src_y*/,
1226                    p_vout->p_rendered_pic->i_width,
1227                    p_vout->p_rendered_pic->i_height,
1228                    0 /*dest_x*/, 0 /*dest_y*/, i_dest_width, i_dest_height,
1229                    False );
1230
1231     XResizeWindow( p_vout->p_sys->p_display, p_vout->p_sys->yuv_window,
1232                    i_dest_width, i_dest_height );
1233     XMoveWindow( p_vout->p_sys->p_display, p_vout->p_sys->yuv_window,
1234                  i_dest_x, i_dest_y );
1235
1236     /* Send the order to the X server */
1237     XSync( p_vout->p_sys->p_display, False );
1238 }
1239
1240 #if 0
1241 /*****************************************************************************
1242  * XVideoSetAttribute
1243  *****************************************************************************
1244  * This function can be used to set attributes, e.g. XV_BRIGHTNESS and
1245  * XV_CONTRAST. "f_value" should be in the range of 0 to 1.
1246  *****************************************************************************/
1247 static void XVideoSetAttribute( vout_thread_t *p_vout,
1248                                 char *attr_name, float f_value )
1249 {
1250     int             i_attrib;
1251     XvAttribute    *p_attrib;
1252     Display        *p_dpy   = p_vout->p_sys->p_display;
1253     int             xv_port = p_vout->p_sys->xv_port;
1254
1255     p_attrib = XvQueryPortAttributes( p_dpy, xv_port, &i_attrib );
1256
1257     do
1258     {
1259         i_attrib--;
1260
1261         if( i_attrib >= 0 && !strcmp( p_attrib[ i_attrib ].name, attr_name ) )
1262         {
1263             int i_sv = f_value * ( p_attrib[ i_attrib ].max_value
1264                                     - p_attrib[ i_attrib ].min_value + 1 )
1265                         + p_attrib[ i_attrib ].min_value;
1266
1267             XvSetPortAttribute( p_dpy, xv_port,
1268                             XInternAtom( p_dpy, attr_name, False ), i_sv );
1269             break;
1270         }
1271
1272     } while( i_attrib > 0 );
1273
1274     if( p_attrib )
1275         XFree( p_attrib );
1276 }
1277 #endif