git.sesse.net Git - vlc/blob - plugins/sdl/vout_sdl.c

   1 /*****************************************************************************
   2  * vout_sdl.c: SDL video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998, 1999, 2000 VideoLAN
   5  * $Id: vout_sdl.c,v 1.52 2001/05/25 13:20:09 sam Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Pierre Baillet <oct@zoy.org>
   9  *          Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24  *****************************************************************************/
  25
  26 #define MODULE_NAME sdl
  27 #include "modules_inner.h"
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #include "defs.h"
  33
  34 #include <errno.h>                                                 /* ENOMEM */
  35 #include <stdlib.h>                                                /* free() */
  36 #include <string.h>                                            /* strerror() */
  37
  38 #ifndef WIN32
  39 #include <netinet/in.h>                               /* BSD: struct in_addr */
  40 #endif
  41
  42 #include <SDL/SDL.h>
  43
  44 #include "config.h"
  45 #include "common.h"
  46 #include "threads.h"
  47 #include "mtime.h"
  48 #include "tests.h"
  49 #include "modules.h"
  50
  51 #include "video.h"
  52 #include "video_output.h"
  53
  54 #include "intf_msg.h"
  55 #include "interface.h"
  56 /* FIXME: get rid of this */
  57 #include "keystrokes.h"
  58 #include "main.h"
  59 #include "netutils.h"
  60
  61 /*****************************************************************************
  62  * FIXME: this file is ...                                                   *
  63  *                                                                           *
  64  *              XXX   XXX     FIXME     XXX     XXX   XXX   XXX              *
  65  *              XXX   XXX   XXX   XXX   XXX     XXX   XXX   XXX              *
  66  *              XXX   XXX   XXX         XXX       FIXME     XXX              *
  67  *              XXX   XXX   XXX  TODO   XXX        XXX      XXX              *
  68  *              XXX   XXX   XXX   XXX   XXX        XXX                       *
  69  *                FIXME       FIXME       FIXME    XXX      XXX              *
  70  *                                                                           *
  71  *****************************************************************************/
  72
  73 /*****************************************************************************
  74  * vout_sys_t: video output SDL method descriptor
  75  *****************************************************************************
  76  * This structure is part of the video output thread descriptor.
  77  * It describes the SDL specific properties of an output thread.
  78  *****************************************************************************/
  79 typedef struct vout_sys_s
  80 {
  81     int i_width;
  82     int i_height;
  83
  84     SDL_Surface *   p_display;                             /* display device */
  85     SDL_Overlay *   p_overlay;                             /* overlay device */
  86
  87     boolean_t   b_overlay;
  88     boolean_t   b_cursor;
  89     boolean_t   b_reopen_display;
  90
  91     boolean_t   b_cursor_autohidden;
  92     mtime_t     i_lastmoved;
  93
  94     Uint8   *   p_sdl_buf[2];                          /* Buffer information */
  95
  96 } vout_sys_t;
  97
  98 /*****************************************************************************
  99  * Local prototypes.
 100  *****************************************************************************/
 101 static int  vout_Probe     ( probedata_t *p_data );
 102 static int  vout_Create    ( struct vout_thread_s * );
 103 static int  vout_Init      ( struct vout_thread_s * );
 104 static void vout_End       ( struct vout_thread_s * );
 105 static void vout_Destroy   ( struct vout_thread_s * );
 106 static int  vout_Manage    ( struct vout_thread_s * );
 107 static void vout_Display   ( struct vout_thread_s * );
 108 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 109                              u16 *blue, u16 *transp );
 110
 111 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 112 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 113
 114 /*****************************************************************************
 115  * Functions exported as capabilities. They are declared as static so that
 116  * we don't pollute the namespace too much.
 117  *****************************************************************************/
 118 void _M( vout_getfunctions )( function_list_t * p_function_list )
 119 {
 120     p_function_list->pf_probe = vout_Probe;
 121     p_function_list->functions.vout.pf_create     = vout_Create;
 122     p_function_list->functions.vout.pf_init       = vout_Init;
 123     p_function_list->functions.vout.pf_end        = vout_End;
 124     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 125     p_function_list->functions.vout.pf_manage     = vout_Manage;
 126     p_function_list->functions.vout.pf_display    = vout_Display;
 127     p_function_list->functions.vout.pf_setpalette = vout_SetPalette;
 128 }
 129
 130 /*****************************************************************************
 131  * vout_Probe: probe the video driver and return a score
 132  *****************************************************************************
 133  * This function tries to initialize SDL and returns a score to the
 134  * plugin manager so that it can select the best plugin.
 135  *****************************************************************************/
 136 static int vout_Probe( probedata_t *p_data )
 137 {
 138     if( TestMethod( VOUT_METHOD_VAR, "sdl" ) )
 139     {
 140         return( 999 );
 141     }
 142
 143     return( 100 );
 144 }
 145
 146 /*****************************************************************************
 147  * vout_Create: allocate SDL video thread output method
 148  *****************************************************************************
 149  * This function allocate and initialize a SDL vout method. It uses some of the
 150  * vout properties to choose the correct mode, and change them according to the
 151  * mode actually used.
 152  *****************************************************************************/
 153 static int vout_Create( vout_thread_t *p_vout )
 154 {
 155     /* Allocate structure */
 156     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 157     if( p_vout->p_sys == NULL )
 158     {
 159         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 160         return( 1 );
 161     }
 162
 163     /* Initialize library */
 164     if( SDL_Init( SDL_INIT_VIDEO
 165 #ifndef WIN32
 166     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 167                 | SDL_INIT_EVENTTHREAD
 168 #endif
 169                 | SDL_INIT_NOPARACHUTE ) < 0 )
 170     {
 171         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 172         free( p_vout->p_sys );
 173         return( 1 );
 174     }
 175
 176     p_vout->p_sys->b_cursor = 1; /* TODO should be done with a main_GetInt.. */
 177
 178     p_vout->p_sys->b_cursor_autohidden = 0;
 179     p_vout->p_sys->i_lastmoved = mdate();
 180
 181     p_vout->b_fullscreen = main_GetIntVariable( VOUT_FULLSCREEN_VAR,
 182                                 VOUT_FULLSCREEN_DEFAULT );
 183     p_vout->p_sys->b_overlay = main_GetIntVariable( VOUT_OVERLAY_VAR,
 184                                 VOUT_OVERLAY_DEFAULT );
 185     p_vout->p_sys->i_width = main_GetIntVariable( VOUT_WIDTH_VAR,
 186                                 VOUT_WIDTH_DEFAULT );
 187     p_vout->p_sys->i_height = main_GetIntVariable( VOUT_HEIGHT_VAR,
 188                                 VOUT_HEIGHT_DEFAULT );
 189
 190     p_vout->p_sys->p_display = NULL;
 191     p_vout->p_sys->p_overlay = NULL;
 192
 193     if( SDLOpenDisplay(p_vout) )
 194     {
 195         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 196         free( p_vout->p_sys );
 197         return( 1 );
 198     }
 199
 200     /* FIXME: get rid of this ASAP, it's FUCKING UGLY */
 201     { intf_thread_t * p_intf = p_main->p_intf;
 202     intf_AssignKey(p_intf, SDLK_q,      INTF_KEY_QUIT, 0);
 203     intf_AssignKey(p_intf, SDLK_ESCAPE, INTF_KEY_QUIT, 0);
 204     /* intf_AssignKey(p_intf,3,'Q'); */
 205     intf_AssignKey(p_intf, SDLK_0,      INTF_KEY_SET_CHANNEL,0);
 206     intf_AssignKey(p_intf, SDLK_1,      INTF_KEY_SET_CHANNEL,1);
 207     intf_AssignKey(p_intf, SDLK_2,      INTF_KEY_SET_CHANNEL,2);
 208     intf_AssignKey(p_intf, SDLK_3,      INTF_KEY_SET_CHANNEL,3);
 209     intf_AssignKey(p_intf, SDLK_4,      INTF_KEY_SET_CHANNEL,4);
 210     intf_AssignKey(p_intf, SDLK_5,      INTF_KEY_SET_CHANNEL,5);
 211     intf_AssignKey(p_intf, SDLK_6,      INTF_KEY_SET_CHANNEL,6);
 212     intf_AssignKey(p_intf, SDLK_7,      INTF_KEY_SET_CHANNEL,7);
 213     intf_AssignKey(p_intf, SDLK_8,      INTF_KEY_SET_CHANNEL,8);
 214     intf_AssignKey(p_intf, SDLK_9,      INTF_KEY_SET_CHANNEL,9);
 215     intf_AssignKey(p_intf, SDLK_PLUS,   INTF_KEY_INC_VOLUME, 0);
 216     intf_AssignKey(p_intf, SDLK_MINUS,  INTF_KEY_DEC_VOLUME, 0);
 217     intf_AssignKey(p_intf, SDLK_m,      INTF_KEY_TOGGLE_VOLUME, 0);
 218     /* intf_AssignKey(p_intf,'M','M'); */
 219     intf_AssignKey(p_intf, SDLK_g,      INTF_KEY_DEC_GAMMA, 0);
 220     /* intf_AssignKey(p_intf,'G','G'); */
 221     intf_AssignKey(p_intf, SDLK_c,      INTF_KEY_TOGGLE_GRAYSCALE, 0);
 222     intf_AssignKey(p_intf, SDLK_SPACE,  INTF_KEY_TOGGLE_INTERFACE, 0);
 223     intf_AssignKey(p_intf, SDLK_i,      INTF_KEY_TOGGLE_INFO, 0);
 224     intf_AssignKey(p_intf, SDLK_s,      INTF_KEY_TOGGLE_SCALING, 0);
 225     intf_AssignKey(p_intf, SDLK_d,      INTF_KEY_DUMP_STREAM, 0); }
 226
 227     return( 0 );
 228 }
 229
 230 /*****************************************************************************
 231  * vout_Init: initialize SDL video thread output method
 232  *****************************************************************************
 233  * This function initialize the SDL display device.
 234  *****************************************************************************/
 235 static int vout_Init( vout_thread_t *p_vout )
 236 {
 237     /* This hack is hugly, but hey, you are, too. */
 238
 239     SDL_Overlay *   p_overlay;
 240
 241     p_overlay = SDL_CreateYUVOverlay(
 242            main_GetIntVariable( VOUT_WIDTH_VAR,VOUT_WIDTH_DEFAULT ),
 243            main_GetIntVariable( VOUT_HEIGHT_VAR,VOUT_HEIGHT_DEFAULT ),
 244                                       SDL_YV12_OVERLAY,
 245                                       p_vout->p_sys->p_display );
 246     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 247               p_overlay->hw_overlay ? "activated" : "unavailable !" );
 248     p_vout->b_need_render = !p_overlay->hw_overlay;
 249
 250     SDL_FreeYUVOverlay( p_overlay );
 251
 252     return( 0 );
 253 }
 254
 255 /*****************************************************************************
 256  * vout_End: terminate Sys video thread output method
 257  *****************************************************************************
 258  * Terminate an output method created by vout_SDLCreate
 259  *****************************************************************************/
 260 static void vout_End( vout_thread_t *p_vout )
 261 {
 262     SDLCloseDisplay( p_vout );
 263     SDL_Quit();
 264 }
 265
 266 /*****************************************************************************
 267  * vout_Destroy: destroy Sys video thread output method
 268  *****************************************************************************
 269  * Terminate an output method created by vout_SDLCreate
 270  *****************************************************************************/
 271 static void vout_Destroy( vout_thread_t *p_vout )
 272 {
 273     free( p_vout->p_sys );
 274 }
 275
 276 /*****************************************************************************
 277  * vout_Manage: handle Sys events
 278  *****************************************************************************
 279  * This function should be called regularly by video output thread. It returns
 280  * a non null value if an error occured.
 281  *****************************************************************************/
 282 static int vout_Manage( vout_thread_t *p_vout )
 283 {
 284     SDL_Event event;                                            /* SDL event */
 285     char *    p_key;
 286
 287     /* Process events */
 288     while( SDL_PollEvent(&event) )
 289     {
 290         switch( event.type )
 291         {
 292         case SDL_VIDEORESIZE:                          /* Resizing of window */
 293             p_vout->i_width = event.resize.w;
 294             p_vout->i_height = event.resize.h;
 295             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 296             break;
 297
 298         case SDL_MOUSEMOTION:
 299             if( p_vout->p_sys->b_cursor &&
 300                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 301             {
 302                 if( p_vout->p_sys->b_cursor_autohidden )
 303                 {
 304                     p_vout->p_sys->b_cursor_autohidden = 0;
 305                     SDL_ShowCursor( 1 );
 306                 }
 307                 else
 308                 {
 309                     p_vout->p_sys->i_lastmoved = mdate();
 310                 }
 311             }
 312             break;
 313
 314         case SDL_MOUSEBUTTONUP:
 315             switch( event.button.button )
 316             {
 317             case SDL_BUTTON_RIGHT:
 318                 p_main->p_intf->b_menu_change = 1;
 319                 break;
 320             }
 321             break;
 322
 323         case SDL_MOUSEBUTTONDOWN:
 324             switch( event.button.button )
 325             {
 326             case SDL_BUTTON_MIDDLE:
 327                 p_vout->i_changes |= VOUT_CURSOR_CHANGE;
 328                 break;
 329             }
 330             break;
 331
 332         case SDL_QUIT:
 333             intf_ProcessKey( p_main->p_intf, SDLK_q );
 334             break;
 335
 336         case SDL_KEYDOWN:                             /* if a key is pressed */
 337
 338             switch( event.key.keysym.sym )
 339             {
 340             case SDLK_f:                             /* switch to fullscreen */
 341                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 342                 break;
 343
 344             case SDLK_y:                               /* switch to hard YUV */
 345                 p_vout->i_changes |= VOUT_YUV_CHANGE;
 346                 break;
 347
 348             case SDLK_c:                                 /* toggle grayscale */
 349                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 350                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 351                 break;
 352
 353             case SDLK_i:                                      /* toggle info */
 354                 p_vout->b_info = ! p_vout->b_info;
 355                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 356                 break;
 357
 358             case SDLK_s:                                   /* toggle scaling */
 359                 p_vout->b_scale = ! p_vout->b_scale;
 360                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 361                 break;
 362
 363             case SDLK_SPACE:                             /* toggle interface */
 364                 p_vout->b_interface = ! p_vout->b_interface;
 365                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 366                 break;
 367
 368             case SDLK_F10:
 369                 network_ChannelJoin( 0 );
 370                 break;
 371             case SDLK_F1:
 372                 network_ChannelJoin( 1 );
 373                 break;
 374             case SDLK_F2:
 375                 network_ChannelJoin( 2 );
 376                 break;
 377             case SDLK_F3:
 378                 network_ChannelJoin( 3 );
 379                 break;
 380             case SDLK_F4:
 381                 network_ChannelJoin( 4 );
 382                 break;
 383             case SDLK_F5:
 384                 network_ChannelJoin( 5 );
 385                 break;
 386             case SDLK_F6:
 387                 network_ChannelJoin( 6 );
 388                 break;
 389             case SDLK_F7:
 390                 network_ChannelJoin( 7 );
 391                 break;
 392             case SDLK_F8:
 393                 network_ChannelJoin( 8 );
 394                 break;
 395             case SDLK_F9:
 396                 network_ChannelJoin( 9 );
 397                 break;
 398
 399             case SDLK_MENU:
 400                 p_main->p_intf->b_menu_change = 1;
 401                 break;
 402
 403             default:
 404                 p_key = SDL_GetKeyName( event.key.keysym.sym ) ;
 405                 if( intf_ProcessKey( p_main->p_intf,
 406                                      (char )event.key.keysym.sym ) )
 407                 {
 408                    intf_DbgMsg( "unhandled key '%c' (%i)",
 409                                 (char)event.key.keysym.sym,
 410                                 event.key.keysym.sym );
 411                 }
 412                 break;
 413             }
 414             break;
 415
 416         default:
 417             break;
 418         }
 419     }
 420
 421     /*
 422      * Size Change
 423      */
 424     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 425     {
 426         p_vout->p_sys->i_width = p_vout->i_width;
 427         p_vout->p_sys->i_height = p_vout->i_height;
 428
 429         /* Need to reopen display */
 430         SDLCloseDisplay( p_vout );
 431         if( SDLOpenDisplay( p_vout ) )
 432         {
 433           intf_ErrMsg( "vout error: can't reopen display after resize" );
 434           return( 1 );
 435         }
 436         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 437     }
 438
 439     /*
 440      * YUV Change
 441      */
 442     if( p_vout->i_changes & VOUT_YUV_CHANGE )
 443     {
 444         p_vout->b_need_render = ! p_vout->b_need_render;
 445
 446         /* Need to reopen display */
 447         SDLCloseDisplay( p_vout );
 448         if( SDLOpenDisplay( p_vout ) )
 449         {
 450           intf_ErrMsg( "error: can't reopen display after YUV change" );
 451           return( 1 );
 452         }
 453         p_vout->i_changes &= ~VOUT_YUV_CHANGE;
 454     }
 455
 456     /*
 457      * Fullscreen change
 458      */
 459     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 460     {
 461         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 462
 463         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 464
 465         p_vout->p_sys->b_cursor_autohidden = 0;
 466         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 467                         ! p_vout->p_sys->b_cursor_autohidden );
 468
 469         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 470     }
 471
 472     /*
 473      * Pointer change
 474      */
 475     if( ! p_vout->p_sys->b_cursor_autohidden &&
 476         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 477     {
 478         /* Hide the mouse automatically */
 479         p_vout->p_sys->b_cursor_autohidden = 1;
 480         SDL_ShowCursor( 0 );
 481     }
 482
 483     if( p_vout->i_changes & VOUT_CURSOR_CHANGE )
 484     {
 485         p_vout->p_sys->b_cursor = ! p_vout->p_sys->b_cursor;
 486
 487         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 488                         ! p_vout->p_sys->b_cursor_autohidden );
 489
 490         p_vout->i_changes &= ~VOUT_CURSOR_CHANGE;
 491     }
 492
 493     return( 0 );
 494 }
 495
 496 /*****************************************************************************
 497  * vout_SetPalette: sets an 8 bpp palette
 498  *****************************************************************************
 499  * This function sets the palette given as an argument. It does not return
 500  * anything, but could later send information on which colors it was unable
 501  * to set.
 502  *****************************************************************************/
 503 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 504                          u16 *blue, u16 *transp)
 505 {
 506      /* Create a display surface with a grayscale palette */
 507     SDL_Color colors[256];
 508     int i;
 509
 510     /* Fill colors with color information */
 511     for( i = 0; i < 256; i++ )
 512     {
 513         colors[ i ].r = red[ i ] >> 8;
 514         colors[ i ].g = green[ i ] >> 8;
 515         colors[ i ].b = blue[ i ] >> 8;
 516     }
 517
 518     /* Set palette */
 519     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 520     {
 521         intf_ErrMsg( "vout error: failed setting palette" );
 522     }
 523
 524 }
 525
 526 /*****************************************************************************
 527  * vout_Display: displays previously rendered output
 528  *****************************************************************************
 529  * This function send the currently rendered image to the display, wait until
 530  * it is displayed and switch the two rendering buffer, preparing next frame.
 531  *****************************************************************************/
 532 static void vout_Display( vout_thread_t *p_vout )
 533 {
 534     SDL_Rect    disp;
 535     if((p_vout->p_sys->p_display != NULL) && !p_vout->p_sys->b_reopen_display)
 536     {
 537         if( p_vout->b_need_render )
 538         {
 539             /* Change display frame */
 540             SDL_Flip( p_vout->p_sys->p_display );
 541         }
 542         else
 543         {
 544             /*
 545              * p_vout->p_rendered_pic->p_y/u/v contains the YUV buffers to
 546              * render
 547              */
 548             /* TODO: support for streams other than 4:2:0 */
 549             /* create the overlay if necessary */
 550             if( p_vout->p_sys->p_overlay == NULL )
 551             {
 552                 p_vout->p_sys->p_overlay = SDL_CreateYUVOverlay(
 553                                              p_vout->p_rendered_pic->i_width,
 554                                              p_vout->p_rendered_pic->i_height,
 555                                              SDL_YV12_OVERLAY,
 556                                              p_vout->p_sys->p_display
 557                                            );
 558                 intf_WarnMsg( 2, "vout: YUV acceleration %s",
 559                               p_vout->p_sys->p_overlay->hw_overlay
 560                             ? "activated" : "unavailable !" );
 561             }
 562
 563             SDL_LockYUVOverlay(p_vout->p_sys->p_overlay);
 564             /* copy the data into video buffers */
 565             /* Y first */
 566             memcpy(p_vout->p_sys->p_overlay->pixels[0],
 567                    p_vout->p_rendered_pic->p_y,
 568                    p_vout->p_sys->p_overlay->h *
 569                    p_vout->p_sys->p_overlay->pitches[0]);
 570             /* then V */
 571             memcpy(p_vout->p_sys->p_overlay->pixels[1],
 572                    p_vout->p_rendered_pic->p_v,
 573                    p_vout->p_sys->p_overlay->h *
 574                    p_vout->p_sys->p_overlay->pitches[1] / 2);
 575             /* and U */
 576             memcpy(p_vout->p_sys->p_overlay->pixels[2],
 577                    p_vout->p_rendered_pic->p_u,
 578                    p_vout->p_sys->p_overlay->h *
 579                    p_vout->p_sys->p_overlay->pitches[2] / 2);
 580
 581             disp.w = (&p_vout->p_buffer[p_vout->i_buffer_index])->i_pic_width;
 582             disp.h = (&p_vout->p_buffer[p_vout->i_buffer_index])->i_pic_height;
 583             disp.x = (p_vout->i_width - disp.w)/2;
 584             disp.y = (p_vout->i_height - disp.h)/2;
 585
 586             SDL_DisplayYUVOverlay( p_vout->p_sys->p_overlay , &disp );
 587             SDL_UnlockYUVOverlay(p_vout->p_sys->p_overlay);
 588         }
 589     }
 590 }
 591
 592 /* following functions are local */
 593
 594 /*****************************************************************************
 595  * SDLOpenDisplay: open and initialize SDL device
 596  *****************************************************************************
 597  * Open and initialize display according to preferences specified in the vout
 598  * thread fields.
 599  *****************************************************************************/
 600 static int SDLOpenDisplay( vout_thread_t *p_vout )
 601 {
 602     SDL_Rect    clipping_rect;
 603     Uint32      flags;
 604     int bpp;
 605     /* Open display
 606      * TODO: Check that we can request for a DOUBLEBUF HWSURFACE display
 607      */
 608
 609     /* init flags and cursor */
 610     flags = SDL_ANYFORMAT | SDL_HWPALETTE;
 611
 612     if( p_vout->b_fullscreen )
 613     {
 614         flags |= SDL_FULLSCREEN;
 615     }
 616     else
 617     {
 618         flags |= SDL_RESIZABLE;
 619     }
 620
 621     if( p_vout->b_need_render )
 622     {
 623         flags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
 624     }
 625     else
 626     {
 627         flags |= SDL_SWSURFACE; /* save video memory */
 628     }
 629
 630     bpp = SDL_VideoModeOK( p_vout->p_sys->i_width,
 631                            p_vout->p_sys->i_height,
 632                            p_vout->i_screen_depth, flags );
 633
 634     if( bpp == 0 )
 635     {
 636         intf_ErrMsg( "vout error: no video mode available" );
 637         return( 1 );
 638     }
 639
 640     p_vout->p_sys->p_display = SDL_SetVideoMode(p_vout->p_sys->i_width,
 641                                                 p_vout->p_sys->i_height,
 642                                                 bpp, flags);
 643
 644     if( p_vout->p_sys->p_display == NULL )
 645     {
 646         intf_ErrMsg( "vout error: cannot set video mode" );
 647         return( 1 );
 648     }
 649
 650     SDL_LockSurface( p_vout->p_sys->p_display );
 651
 652     SDL_WM_SetCaption( VOUT_TITLE " (SDL output)",
 653                        VOUT_TITLE " (SDL output)" );
 654     SDL_EventState(SDL_KEYUP , SDL_IGNORE);                /* ignore keys up */
 655
 656     if( p_vout->b_need_render )
 657     {
 658         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 659         SDL_Flip(p_vout->p_sys->p_display);
 660         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 661         SDL_Flip(p_vout->p_sys->p_display);
 662
 663         /* Set clipping for text */
 664         clipping_rect.x = 0;
 665         clipping_rect.y = 0;
 666         clipping_rect.w = p_vout->p_sys->p_display->w;
 667         clipping_rect.h = p_vout->p_sys->p_display->h;
 668         SDL_SetClipRect(p_vout->p_sys->p_display, &clipping_rect);
 669
 670         /* Set thread information */
 671         p_vout->i_width =           p_vout->p_sys->p_display->w;
 672         p_vout->i_height =          p_vout->p_sys->p_display->h;
 673         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 674
 675         p_vout->i_screen_depth =
 676             p_vout->p_sys->p_display->format->BitsPerPixel;
 677         p_vout->i_bytes_per_pixel =
 678             p_vout->p_sys->p_display->format->BytesPerPixel;
 679
 680         p_vout->i_red_mask =        p_vout->p_sys->p_display->format->Rmask;
 681         p_vout->i_green_mask =      p_vout->p_sys->p_display->format->Gmask;
 682         p_vout->i_blue_mask =       p_vout->p_sys->p_display->format->Bmask;
 683
 684         /* FIXME: palette in 8bpp ?? */
 685         /* Set and initialize buffers */
 686         vout_SetBuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 687                                  p_vout->p_sys->p_sdl_buf[ 1 ] );
 688     }
 689     else
 690     {
 691         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 692         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 693
 694         /* Set thread information */
 695         p_vout->i_width =           p_vout->p_sys->p_display->w;
 696         p_vout->i_height =          p_vout->p_sys->p_display->h;
 697         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 698
 699         vout_SetBuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 700                                  p_vout->p_sys->p_sdl_buf[ 1 ] );
 701     }
 702
 703     p_vout->p_sys->b_reopen_display = 0;
 704
 705     return( 0 );
 706 }
 707
 708 /*****************************************************************************
 709  * SDLCloseDisplay: close and reset SDL device
 710  *****************************************************************************
 711  * This function returns all resources allocated by SDLOpenDisplay and restore
 712  * the original state of the device.
 713  *****************************************************************************/
 714 static void SDLCloseDisplay( vout_thread_t *p_vout )
 715 {
 716     if( p_vout->p_sys->p_display != NULL )
 717     {
 718         if( p_vout->p_sys->p_overlay != NULL )
 719         {
 720             SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 721             p_vout->p_sys->p_overlay = NULL;
 722         }
 723
 724         SDL_UnlockSurface ( p_vout->p_sys->p_display );
 725         SDL_FreeSurface( p_vout->p_sys->p_display );
 726         p_vout->p_sys->p_display = NULL;
 727     }
 728 }
 729