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 1.53 2001/05/30 17:03:12 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
  50 #include "video.h"
  51 #include "video_output.h"
  52
  53 #include "intf_msg.h"
  54 #include "interface.h"
  55 /* FIXME: get rid of this */
  56 #include "keystrokes.h"
  57 #include "main.h"
  58 #include "netutils.h"
  59
  60 #include "modules.h"
  61 #include "modules_export.h"
  62
  63 /*****************************************************************************
  64  * FIXME: this file is ...                                                   *
  65  *                                                                           *
  66  *              XXX   XXX     FIXME     XXX     XXX   XXX   XXX              *
  67  *              XXX   XXX   XXX   XXX   XXX     XXX   XXX   XXX              *
  68  *              XXX   XXX   XXX         XXX       FIXME     XXX              *
  69  *              XXX   XXX   XXX  TODO   XXX        XXX      XXX              *
  70  *              XXX   XXX   XXX   XXX   XXX        XXX                       *
  71  *                FIXME       FIXME       FIXME    XXX      XXX              *
  72  *                                                                           *
  73  *****************************************************************************/
  74
  75 /*****************************************************************************
  76  * vout_sys_t: video output SDL method descriptor
  77  *****************************************************************************
  78  * This structure is part of the video output thread descriptor.
  79  * It describes the SDL specific properties of an output thread.
  80  *****************************************************************************/
  81 typedef struct vout_sys_s
  82 {
  83     int i_width;
  84     int i_height;
  85
  86     SDL_Surface *   p_display;                             /* display device */
  87     SDL_Overlay *   p_overlay;                             /* overlay device */
  88
  89     boolean_t   b_overlay;
  90     boolean_t   b_cursor;
  91     boolean_t   b_reopen_display;
  92
  93     boolean_t   b_cursor_autohidden;
  94     mtime_t     i_lastmoved;
  95
  96     Uint8   *   p_sdl_buf[2];                          /* Buffer information */
  97
  98 } vout_sys_t;
  99
 100 /*****************************************************************************
 101  * Local prototypes.
 102  *****************************************************************************/
 103 static int  vout_Probe     ( probedata_t *p_data );
 104 static int  vout_Create    ( struct vout_thread_s * );
 105 static int  vout_Init      ( struct vout_thread_s * );
 106 static void vout_End       ( struct vout_thread_s * );
 107 static void vout_Destroy   ( struct vout_thread_s * );
 108 static int  vout_Manage    ( struct vout_thread_s * );
 109 static void vout_Display   ( struct vout_thread_s * );
 110 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 111                              u16 *blue, u16 *transp );
 112
 113 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 114 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 115
 116 /*****************************************************************************
 117  * Functions exported as capabilities. They are declared as static so that
 118  * we don't pollute the namespace too much.
 119  *****************************************************************************/
 120 void _M( vout_getfunctions )( function_list_t * p_function_list )
 121 {
 122     p_function_list->pf_probe = vout_Probe;
 123     p_function_list->functions.vout.pf_create     = vout_Create;
 124     p_function_list->functions.vout.pf_init       = vout_Init;
 125     p_function_list->functions.vout.pf_end        = vout_End;
 126     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 127     p_function_list->functions.vout.pf_manage     = vout_Manage;
 128     p_function_list->functions.vout.pf_display    = vout_Display;
 129     p_function_list->functions.vout.pf_setpalette = vout_SetPalette;
 130 }
 131
 132 /*****************************************************************************
 133  * vout_Probe: probe the video driver and return a score
 134  *****************************************************************************
 135  * This function tries to initialize SDL and returns a score to the
 136  * plugin manager so that it can select the best plugin.
 137  *****************************************************************************/
 138 static int vout_Probe( probedata_t *p_data )
 139 {
 140     if( TestMethod( VOUT_METHOD_VAR, "sdl" ) )
 141     {
 142         return( 999 );
 143     }
 144
 145     return( 100 );
 146 }
 147
 148 /*****************************************************************************
 149  * vout_Create: allocate SDL video thread output method
 150  *****************************************************************************
 151  * This function allocate and initialize a SDL vout method. It uses some of the
 152  * vout properties to choose the correct mode, and change them according to the
 153  * mode actually used.
 154  *****************************************************************************/
 155 static int vout_Create( vout_thread_t *p_vout )
 156 {
 157     /* Allocate structure */
 158     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 159     if( p_vout->p_sys == NULL )
 160     {
 161         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 162         return( 1 );
 163     }
 164
 165     /* Initialize library */
 166     if( SDL_Init( SDL_INIT_VIDEO
 167 #ifndef WIN32
 168     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 169                 | SDL_INIT_EVENTTHREAD
 170 #endif
 171                 | SDL_INIT_NOPARACHUTE ) < 0 )
 172     {
 173         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 174         free( p_vout->p_sys );
 175         return( 1 );
 176     }
 177
 178     p_vout->p_sys->b_cursor = 1; /* TODO should be done with a main_GetInt.. */
 179
 180     p_vout->p_sys->b_cursor_autohidden = 0;
 181     p_vout->p_sys->i_lastmoved = mdate();
 182
 183     p_vout->b_fullscreen = main_GetIntVariable( VOUT_FULLSCREEN_VAR,
 184                                 VOUT_FULLSCREEN_DEFAULT );
 185     p_vout->p_sys->b_overlay = main_GetIntVariable( VOUT_OVERLAY_VAR,
 186                                 VOUT_OVERLAY_DEFAULT );
 187     p_vout->p_sys->i_width = main_GetIntVariable( VOUT_WIDTH_VAR,
 188                                 VOUT_WIDTH_DEFAULT );
 189     p_vout->p_sys->i_height = main_GetIntVariable( VOUT_HEIGHT_VAR,
 190                                 VOUT_HEIGHT_DEFAULT );
 191
 192     p_vout->p_sys->p_display = NULL;
 193     p_vout->p_sys->p_overlay = NULL;
 194
 195     if( SDLOpenDisplay(p_vout) )
 196     {
 197         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 198         free( p_vout->p_sys );
 199         return( 1 );
 200     }
 201
 202     /* FIXME: get rid of this ASAP, it's FUCKING UGLY */
 203     { intf_thread_t * p_intf = p_main->p_intf;
 204     intf_AssignKey(p_intf, SDLK_q,      INTF_KEY_QUIT, 0);
 205     intf_AssignKey(p_intf, SDLK_ESCAPE, INTF_KEY_QUIT, 0);
 206     /* intf_AssignKey(p_intf,3,'Q'); */
 207     intf_AssignKey(p_intf, SDLK_0,      INTF_KEY_SET_CHANNEL,0);
 208     intf_AssignKey(p_intf, SDLK_1,      INTF_KEY_SET_CHANNEL,1);
 209     intf_AssignKey(p_intf, SDLK_2,      INTF_KEY_SET_CHANNEL,2);
 210     intf_AssignKey(p_intf, SDLK_3,      INTF_KEY_SET_CHANNEL,3);
 211     intf_AssignKey(p_intf, SDLK_4,      INTF_KEY_SET_CHANNEL,4);
 212     intf_AssignKey(p_intf, SDLK_5,      INTF_KEY_SET_CHANNEL,5);
 213     intf_AssignKey(p_intf, SDLK_6,      INTF_KEY_SET_CHANNEL,6);
 214     intf_AssignKey(p_intf, SDLK_7,      INTF_KEY_SET_CHANNEL,7);
 215     intf_AssignKey(p_intf, SDLK_8,      INTF_KEY_SET_CHANNEL,8);
 216     intf_AssignKey(p_intf, SDLK_9,      INTF_KEY_SET_CHANNEL,9);
 217     intf_AssignKey(p_intf, SDLK_PLUS,   INTF_KEY_INC_VOLUME, 0);
 218     intf_AssignKey(p_intf, SDLK_MINUS,  INTF_KEY_DEC_VOLUME, 0);
 219     intf_AssignKey(p_intf, SDLK_m,      INTF_KEY_TOGGLE_VOLUME, 0);
 220     /* intf_AssignKey(p_intf,'M','M'); */
 221     intf_AssignKey(p_intf, SDLK_g,      INTF_KEY_DEC_GAMMA, 0);
 222     /* intf_AssignKey(p_intf,'G','G'); */
 223     intf_AssignKey(p_intf, SDLK_c,      INTF_KEY_TOGGLE_GRAYSCALE, 0);
 224     intf_AssignKey(p_intf, SDLK_SPACE,  INTF_KEY_TOGGLE_INTERFACE, 0);
 225     intf_AssignKey(p_intf, SDLK_i,      INTF_KEY_TOGGLE_INFO, 0);
 226     intf_AssignKey(p_intf, SDLK_s,      INTF_KEY_TOGGLE_SCALING, 0);
 227     intf_AssignKey(p_intf, SDLK_d,      INTF_KEY_DUMP_STREAM, 0); }
 228
 229     return( 0 );
 230 }
 231
 232 /*****************************************************************************
 233  * vout_Init: initialize SDL video thread output method
 234  *****************************************************************************
 235  * This function initialize the SDL display device.
 236  *****************************************************************************/
 237 static int vout_Init( vout_thread_t *p_vout )
 238 {
 239     /* This hack is hugly, but hey, you are, too. */
 240
 241     SDL_Overlay *   p_overlay;
 242
 243     p_overlay = SDL_CreateYUVOverlay(
 244            main_GetIntVariable( VOUT_WIDTH_VAR,VOUT_WIDTH_DEFAULT ),
 245            main_GetIntVariable( VOUT_HEIGHT_VAR,VOUT_HEIGHT_DEFAULT ),
 246                                       SDL_YV12_OVERLAY,
 247                                       p_vout->p_sys->p_display );
 248     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 249               p_overlay->hw_overlay ? "activated" : "unavailable !" );
 250     p_vout->b_need_render = !p_overlay->hw_overlay;
 251
 252     SDL_FreeYUVOverlay( p_overlay );
 253
 254     return( 0 );
 255 }
 256
 257 /*****************************************************************************
 258  * vout_End: terminate Sys video thread output method
 259  *****************************************************************************
 260  * Terminate an output method created by vout_SDLCreate
 261  *****************************************************************************/
 262 static void vout_End( vout_thread_t *p_vout )
 263 {
 264     SDLCloseDisplay( p_vout );
 265     SDL_Quit();
 266 }
 267
 268 /*****************************************************************************
 269  * vout_Destroy: destroy Sys video thread output method
 270  *****************************************************************************
 271  * Terminate an output method created by vout_SDLCreate
 272  *****************************************************************************/
 273 static void vout_Destroy( vout_thread_t *p_vout )
 274 {
 275     free( p_vout->p_sys );
 276 }
 277
 278 /*****************************************************************************
 279  * vout_Manage: handle Sys events
 280  *****************************************************************************
 281  * This function should be called regularly by video output thread. It returns
 282  * a non null value if an error occured.
 283  *****************************************************************************/
 284 static int vout_Manage( vout_thread_t *p_vout )
 285 {
 286     SDL_Event event;                                            /* SDL event */
 287     char *    p_key;
 288
 289     /* Process events */
 290     while( SDL_PollEvent(&event) )
 291     {
 292         switch( event.type )
 293         {
 294         case SDL_VIDEORESIZE:                          /* Resizing of window */
 295             p_vout->i_width = event.resize.w;
 296             p_vout->i_height = event.resize.h;
 297             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 298             break;
 299
 300         case SDL_MOUSEMOTION:
 301             if( p_vout->p_sys->b_cursor &&
 302                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 303             {
 304                 if( p_vout->p_sys->b_cursor_autohidden )
 305                 {
 306                     p_vout->p_sys->b_cursor_autohidden = 0;
 307                     SDL_ShowCursor( 1 );
 308                 }
 309                 else
 310                 {
 311                     p_vout->p_sys->i_lastmoved = mdate();
 312                 }
 313             }
 314             break;
 315
 316         case SDL_MOUSEBUTTONUP:
 317             switch( event.button.button )
 318             {
 319             case SDL_BUTTON_RIGHT:
 320                 p_main->p_intf->b_menu_change = 1;
 321                 break;
 322             }
 323             break;
 324
 325         case SDL_MOUSEBUTTONDOWN:
 326             switch( event.button.button )
 327             {
 328             case SDL_BUTTON_MIDDLE:
 329                 p_vout->i_changes |= VOUT_CURSOR_CHANGE;
 330                 break;
 331             }
 332             break;
 333
 334         case SDL_QUIT:
 335             intf_ProcessKey( p_main->p_intf, SDLK_q );
 336             break;
 337
 338         case SDL_KEYDOWN:                             /* if a key is pressed */
 339
 340             switch( event.key.keysym.sym )
 341             {
 342             case SDLK_f:                             /* switch to fullscreen */
 343                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 344                 break;
 345
 346             case SDLK_y:                               /* switch to hard YUV */
 347                 p_vout->i_changes |= VOUT_YUV_CHANGE;
 348                 break;
 349
 350             case SDLK_c:                                 /* toggle grayscale */
 351                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 352                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 353                 break;
 354
 355             case SDLK_i:                                      /* toggle info */
 356                 p_vout->b_info = ! p_vout->b_info;
 357                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 358                 break;
 359
 360             case SDLK_s:                                   /* toggle scaling */
 361                 p_vout->b_scale = ! p_vout->b_scale;
 362                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 363                 break;
 364
 365             case SDLK_SPACE:                             /* toggle interface */
 366                 p_vout->b_interface = ! p_vout->b_interface;
 367                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 368                 break;
 369
 370             case SDLK_F10:
 371                 network_ChannelJoin( 0 );
 372                 break;
 373             case SDLK_F1:
 374                 network_ChannelJoin( 1 );
 375                 break;
 376             case SDLK_F2:
 377                 network_ChannelJoin( 2 );
 378                 break;
 379             case SDLK_F3:
 380                 network_ChannelJoin( 3 );
 381                 break;
 382             case SDLK_F4:
 383                 network_ChannelJoin( 4 );
 384                 break;
 385             case SDLK_F5:
 386                 network_ChannelJoin( 5 );
 387                 break;
 388             case SDLK_F6:
 389                 network_ChannelJoin( 6 );
 390                 break;
 391             case SDLK_F7:
 392                 network_ChannelJoin( 7 );
 393                 break;
 394             case SDLK_F8:
 395                 network_ChannelJoin( 8 );
 396                 break;
 397             case SDLK_F9:
 398                 network_ChannelJoin( 9 );
 399                 break;
 400
 401             case SDLK_MENU:
 402                 p_main->p_intf->b_menu_change = 1;
 403                 break;
 404
 405             default:
 406                 p_key = SDL_GetKeyName( event.key.keysym.sym ) ;
 407                 if( intf_ProcessKey( p_main->p_intf,
 408                                      (char )event.key.keysym.sym ) )
 409                 {
 410                    intf_DbgMsg( "unhandled key '%c' (%i)",
 411                                 (char)event.key.keysym.sym,
 412                                 event.key.keysym.sym );
 413                 }
 414                 break;
 415             }
 416             break;
 417
 418         default:
 419             break;
 420         }
 421     }
 422
 423     /*
 424      * Size Change
 425      */
 426     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 427     {
 428         p_vout->p_sys->i_width = p_vout->i_width;
 429         p_vout->p_sys->i_height = p_vout->i_height;
 430
 431         /* Need to reopen display */
 432         SDLCloseDisplay( p_vout );
 433         if( SDLOpenDisplay( p_vout ) )
 434         {
 435           intf_ErrMsg( "vout error: can't reopen display after resize" );
 436           return( 1 );
 437         }
 438         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 439     }
 440
 441     /*
 442      * YUV Change
 443      */
 444     if( p_vout->i_changes & VOUT_YUV_CHANGE )
 445     {
 446         p_vout->b_need_render = ! p_vout->b_need_render;
 447
 448         /* Need to reopen display */
 449         SDLCloseDisplay( p_vout );
 450         if( SDLOpenDisplay( p_vout ) )
 451         {
 452           intf_ErrMsg( "error: can't reopen display after YUV change" );
 453           return( 1 );
 454         }
 455         p_vout->i_changes &= ~VOUT_YUV_CHANGE;
 456     }
 457
 458     /*
 459      * Fullscreen change
 460      */
 461     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 462     {
 463         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 464
 465         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 466
 467         p_vout->p_sys->b_cursor_autohidden = 0;
 468         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 469                         ! p_vout->p_sys->b_cursor_autohidden );
 470
 471         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 472     }
 473
 474     /*
 475      * Pointer change
 476      */
 477     if( ! p_vout->p_sys->b_cursor_autohidden &&
 478         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 479     {
 480         /* Hide the mouse automatically */
 481         p_vout->p_sys->b_cursor_autohidden = 1;
 482         SDL_ShowCursor( 0 );
 483     }
 484
 485     if( p_vout->i_changes & VOUT_CURSOR_CHANGE )
 486     {
 487         p_vout->p_sys->b_cursor = ! p_vout->p_sys->b_cursor;
 488
 489         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 490                         ! p_vout->p_sys->b_cursor_autohidden );
 491
 492         p_vout->i_changes &= ~VOUT_CURSOR_CHANGE;
 493     }
 494
 495     return( 0 );
 496 }
 497
 498 /*****************************************************************************
 499  * vout_SetPalette: sets an 8 bpp palette
 500  *****************************************************************************
 501  * This function sets the palette given as an argument. It does not return
 502  * anything, but could later send information on which colors it was unable
 503  * to set.
 504  *****************************************************************************/
 505 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 506                          u16 *blue, u16 *transp)
 507 {
 508      /* Create a display surface with a grayscale palette */
 509     SDL_Color colors[256];
 510     int i;
 511
 512     /* Fill colors with color information */
 513     for( i = 0; i < 256; i++ )
 514     {
 515         colors[ i ].r = red[ i ] >> 8;
 516         colors[ i ].g = green[ i ] >> 8;
 517         colors[ i ].b = blue[ i ] >> 8;
 518     }
 519
 520     /* Set palette */
 521     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 522     {
 523         intf_ErrMsg( "vout error: failed setting palette" );
 524     }
 525
 526 }
 527
 528 /*****************************************************************************
 529  * vout_Display: displays previously rendered output
 530  *****************************************************************************
 531  * This function send the currently rendered image to the display, wait until
 532  * it is displayed and switch the two rendering buffer, preparing next frame.
 533  *****************************************************************************/
 534 static void vout_Display( vout_thread_t *p_vout )
 535 {
 536     SDL_Rect    disp;
 537     if((p_vout->p_sys->p_display != NULL) && !p_vout->p_sys->b_reopen_display)
 538     {
 539         if( p_vout->b_need_render )
 540         {
 541             /* Change display frame */
 542             SDL_Flip( p_vout->p_sys->p_display );
 543         }
 544         else
 545         {
 546             /*
 547              * p_vout->p_rendered_pic->p_y/u/v contains the YUV buffers to
 548              * render
 549              */
 550             /* TODO: support for streams other than 4:2:0 */
 551             /* create the overlay if necessary */
 552             if( p_vout->p_sys->p_overlay == NULL )
 553             {
 554                 p_vout->p_sys->p_overlay = SDL_CreateYUVOverlay(
 555                                              p_vout->p_rendered_pic->i_width,
 556                                              p_vout->p_rendered_pic->i_height,
 557                                              SDL_YV12_OVERLAY,
 558                                              p_vout->p_sys->p_display
 559                                            );
 560                 intf_WarnMsg( 2, "vout: YUV acceleration %s",
 561                               p_vout->p_sys->p_overlay->hw_overlay
 562                             ? "activated" : "unavailable !" );
 563             }
 564
 565             SDL_LockYUVOverlay(p_vout->p_sys->p_overlay);
 566             /* copy the data into video buffers */
 567             /* Y first */
 568             memcpy(p_vout->p_sys->p_overlay->pixels[0],
 569                    p_vout->p_rendered_pic->p_y,
 570                    p_vout->p_sys->p_overlay->h *
 571                    p_vout->p_sys->p_overlay->pitches[0]);
 572             /* then V */
 573             memcpy(p_vout->p_sys->p_overlay->pixels[1],
 574                    p_vout->p_rendered_pic->p_v,
 575                    p_vout->p_sys->p_overlay->h *
 576                    p_vout->p_sys->p_overlay->pitches[1] / 2);
 577             /* and U */
 578             memcpy(p_vout->p_sys->p_overlay->pixels[2],
 579                    p_vout->p_rendered_pic->p_u,
 580                    p_vout->p_sys->p_overlay->h *
 581                    p_vout->p_sys->p_overlay->pitches[2] / 2);
 582
 583             disp.w = (&p_vout->p_buffer[p_vout->i_buffer_index])->i_pic_width;
 584             disp.h = (&p_vout->p_buffer[p_vout->i_buffer_index])->i_pic_height;
 585             disp.x = (p_vout->i_width - disp.w)/2;
 586             disp.y = (p_vout->i_height - disp.h)/2;
 587
 588             SDL_DisplayYUVOverlay( p_vout->p_sys->p_overlay , &disp );
 589             SDL_UnlockYUVOverlay(p_vout->p_sys->p_overlay);
 590         }
 591     }
 592 }
 593
 594 /* following functions are local */
 595
 596 /*****************************************************************************
 597  * SDLOpenDisplay: open and initialize SDL device
 598  *****************************************************************************
 599  * Open and initialize display according to preferences specified in the vout
 600  * thread fields.
 601  *****************************************************************************/
 602 static int SDLOpenDisplay( vout_thread_t *p_vout )
 603 {
 604     SDL_Rect    clipping_rect;
 605     Uint32      flags;
 606     int bpp;
 607     /* Open display
 608      * TODO: Check that we can request for a DOUBLEBUF HWSURFACE display
 609      */
 610
 611     /* init flags and cursor */
 612     flags = SDL_ANYFORMAT | SDL_HWPALETTE;
 613
 614     if( p_vout->b_fullscreen )
 615     {
 616         flags |= SDL_FULLSCREEN;
 617     }
 618     else
 619     {
 620         flags |= SDL_RESIZABLE;
 621     }
 622
 623     if( p_vout->b_need_render )
 624     {
 625         flags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
 626     }
 627     else
 628     {
 629         flags |= SDL_SWSURFACE; /* save video memory */
 630     }
 631
 632     bpp = SDL_VideoModeOK( p_vout->p_sys->i_width,
 633                            p_vout->p_sys->i_height,
 634                            p_vout->i_screen_depth, flags );
 635
 636     if( bpp == 0 )
 637     {
 638         intf_ErrMsg( "vout error: no video mode available" );
 639         return( 1 );
 640     }
 641
 642     p_vout->p_sys->p_display = SDL_SetVideoMode(p_vout->p_sys->i_width,
 643                                                 p_vout->p_sys->i_height,
 644                                                 bpp, flags);
 645
 646     if( p_vout->p_sys->p_display == NULL )
 647     {
 648         intf_ErrMsg( "vout error: cannot set video mode" );
 649         return( 1 );
 650     }
 651
 652     SDL_LockSurface( p_vout->p_sys->p_display );
 653
 654     SDL_WM_SetCaption( VOUT_TITLE " (SDL output)",
 655                        VOUT_TITLE " (SDL output)" );
 656     SDL_EventState(SDL_KEYUP , SDL_IGNORE);                /* ignore keys up */
 657
 658     if( p_vout->b_need_render )
 659     {
 660         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 661         SDL_Flip(p_vout->p_sys->p_display);
 662         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 663         SDL_Flip(p_vout->p_sys->p_display);
 664
 665         /* Set clipping for text */
 666         clipping_rect.x = 0;
 667         clipping_rect.y = 0;
 668         clipping_rect.w = p_vout->p_sys->p_display->w;
 669         clipping_rect.h = p_vout->p_sys->p_display->h;
 670         SDL_SetClipRect(p_vout->p_sys->p_display, &clipping_rect);
 671
 672         /* Set thread information */
 673         p_vout->i_width =           p_vout->p_sys->p_display->w;
 674         p_vout->i_height =          p_vout->p_sys->p_display->h;
 675         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 676
 677         p_vout->i_screen_depth =
 678             p_vout->p_sys->p_display->format->BitsPerPixel;
 679         p_vout->i_bytes_per_pixel =
 680             p_vout->p_sys->p_display->format->BytesPerPixel;
 681
 682         p_vout->i_red_mask =        p_vout->p_sys->p_display->format->Rmask;
 683         p_vout->i_green_mask =      p_vout->p_sys->p_display->format->Gmask;
 684         p_vout->i_blue_mask =       p_vout->p_sys->p_display->format->Bmask;
 685
 686         /* FIXME: palette in 8bpp ?? */
 687         /* Set and initialize buffers */
 688         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 689                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 690     }
 691     else
 692     {
 693         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 694         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 695
 696         /* Set thread information */
 697         p_vout->i_width =           p_vout->p_sys->p_display->w;
 698         p_vout->i_height =          p_vout->p_sys->p_display->h;
 699         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 700
 701         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 702                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 703     }
 704
 705     p_vout->p_sys->b_reopen_display = 0;
 706
 707     return( 0 );
 708 }
 709
 710 /*****************************************************************************
 711  * SDLCloseDisplay: close and reset SDL device
 712  *****************************************************************************
 713  * This function returns all resources allocated by SDLOpenDisplay and restore
 714  * the original state of the device.
 715  *****************************************************************************/
 716 static void SDLCloseDisplay( vout_thread_t *p_vout )
 717 {
 718     if( p_vout->p_sys->p_display != NULL )
 719     {
 720         if( p_vout->p_sys->p_overlay != NULL )
 721         {
 722             SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 723             p_vout->p_sys->p_overlay = NULL;
 724         }
 725
 726         SDL_UnlockSurface ( p_vout->p_sys->p_display );
 727         SDL_FreeSurface( p_vout->p_sys->p_display );
 728         p_vout->p_sys->p_display = NULL;
 729     }
 730 }
 731