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 1.57 2001/07/11 02:01:05 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 #include <sys/types.h>
  39 #ifndef WIN32
  40 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  41 #endif
  42
  43 #include <SDL/SDL.h>
  44
  45 #include "config.h"
  46 #include "common.h"
  47 #include "threads.h"
  48 #include "mtime.h"
  49 #include "tests.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 #include "modules.h"
  62 #include "modules_export.h"
  63
  64 /*****************************************************************************
  65  * FIXME: this file is ...                                                   *
  66  *                                                                           *
  67  *              XXX   XXX     FIXME     XXX     XXX   XXX   XXX              *
  68  *              XXX   XXX   XXX   XXX   XXX     XXX   XXX   XXX              *
  69  *              XXX   XXX   XXX         XXX       FIXME     XXX              *
  70  *              XXX   XXX   XXX  TODO   XXX        XXX      XXX              *
  71  *              XXX   XXX   XXX   XXX   XXX        XXX                       *
  72  *                FIXME       FIXME       FIXME    XXX      XXX              *
  73  *                                                                           *
  74  *****************************************************************************/
  75
  76 /*****************************************************************************
  77  * vout_sys_t: video output SDL method descriptor
  78  *****************************************************************************
  79  * This structure is part of the video output thread descriptor.
  80  * It describes the SDL specific properties of an output thread.
  81  *****************************************************************************/
  82 typedef struct vout_sys_s
  83 {
  84     int i_width;
  85     int i_height;
  86
  87     SDL_Surface *   p_display;                             /* display device */
  88     SDL_Overlay *   p_overlay;                             /* overlay device */
  89
  90     boolean_t   b_overlay;
  91     boolean_t   b_cursor;
  92     boolean_t   b_reopen_display;
  93
  94     boolean_t   b_cursor_autohidden;
  95     mtime_t     i_lastmoved;
  96
  97     Uint8   *   p_sdl_buf[2];                          /* Buffer information */
  98
  99 } vout_sys_t;
 100
 101 /*****************************************************************************
 102  * Local prototypes.
 103  *****************************************************************************/
 104 static int  vout_Probe     ( probedata_t *p_data );
 105 static int  vout_Create    ( struct vout_thread_s * );
 106 static int  vout_Init      ( struct vout_thread_s * );
 107 static void vout_End       ( struct vout_thread_s * );
 108 static void vout_Destroy   ( struct vout_thread_s * );
 109 static int  vout_Manage    ( struct vout_thread_s * );
 110 static void vout_Display   ( struct vout_thread_s * );
 111 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 112                              u16 *blue, u16 *transp );
 113
 114 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 115 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 116
 117 /*****************************************************************************
 118  * Functions exported as capabilities. They are declared as static so that
 119  * we don't pollute the namespace too much.
 120  *****************************************************************************/
 121 void _M( vout_getfunctions )( function_list_t * p_function_list )
 122 {
 123     p_function_list->pf_probe = vout_Probe;
 124     p_function_list->functions.vout.pf_create     = vout_Create;
 125     p_function_list->functions.vout.pf_init       = vout_Init;
 126     p_function_list->functions.vout.pf_end        = vout_End;
 127     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 128     p_function_list->functions.vout.pf_manage     = vout_Manage;
 129     p_function_list->functions.vout.pf_display    = vout_Display;
 130     p_function_list->functions.vout.pf_setpalette = vout_SetPalette;
 131 }
 132
 133 /*****************************************************************************
 134  * vout_Probe: probe the video driver and return a score
 135  *****************************************************************************
 136  * This function tries to initialize SDL and returns a score to the
 137  * plugin manager so that it can select the best plugin.
 138  *****************************************************************************/
 139 static int vout_Probe( probedata_t *p_data )
 140 {
 141     if( TestMethod( VOUT_METHOD_VAR, "sdl" ) )
 142     {
 143         return( 999 );
 144     }
 145
 146     return( 100 );
 147 }
 148
 149 /*****************************************************************************
 150  * vout_Create: allocate SDL video thread output method
 151  *****************************************************************************
 152  * This function allocate and initialize a SDL vout method. It uses some of the
 153  * vout properties to choose the correct mode, and change them according to the
 154  * mode actually used.
 155  *****************************************************************************/
 156 static int vout_Create( vout_thread_t *p_vout )
 157 {
 158     /* Allocate structure */
 159     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 160     if( p_vout->p_sys == NULL )
 161     {
 162         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 163         return( 1 );
 164     }
 165
 166     /* Initialize library */
 167     if( SDL_Init( SDL_INIT_VIDEO
 168 #ifndef WIN32
 169     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 170                 | SDL_INIT_EVENTTHREAD
 171 #endif
 172                 | SDL_INIT_NOPARACHUTE ) < 0 )
 173     {
 174         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 175         free( p_vout->p_sys );
 176         return( 1 );
 177     }
 178
 179     p_vout->p_sys->b_cursor = 1; /* TODO should be done with a main_GetInt.. */
 180
 181     p_vout->p_sys->b_cursor_autohidden = 0;
 182     p_vout->p_sys->i_lastmoved = mdate();
 183
 184     p_vout->b_fullscreen = main_GetIntVariable( VOUT_FULLSCREEN_VAR,
 185                                 VOUT_FULLSCREEN_DEFAULT );
 186     p_vout->p_sys->b_overlay = main_GetIntVariable( VOUT_OVERLAY_VAR,
 187                                 VOUT_OVERLAY_DEFAULT );
 188     p_vout->p_sys->i_width = main_GetIntVariable( VOUT_WIDTH_VAR,
 189                                 VOUT_WIDTH_DEFAULT );
 190     p_vout->p_sys->i_height = main_GetIntVariable( VOUT_HEIGHT_VAR,
 191                                 VOUT_HEIGHT_DEFAULT );
 192
 193     p_vout->p_sys->p_display = NULL;
 194     p_vout->p_sys->p_overlay = NULL;
 195
 196     if( SDLOpenDisplay(p_vout) )
 197     {
 198         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 199         free( p_vout->p_sys );
 200         return( 1 );
 201     }
 202
 203     /* FIXME: get rid of this ASAP, it's FUCKING UGLY */
 204     { intf_thread_t * p_intf = p_main->p_intf;
 205     intf_AssignKey(p_intf, SDLK_q,      INTF_KEY_QUIT, 0);
 206     intf_AssignKey(p_intf, SDLK_ESCAPE, INTF_KEY_QUIT, 0);
 207     /* intf_AssignKey(p_intf,3,'Q'); */
 208     intf_AssignKey(p_intf, SDLK_0,      INTF_KEY_SET_CHANNEL,0);
 209     intf_AssignKey(p_intf, SDLK_1,      INTF_KEY_SET_CHANNEL,1);
 210     intf_AssignKey(p_intf, SDLK_2,      INTF_KEY_SET_CHANNEL,2);
 211     intf_AssignKey(p_intf, SDLK_3,      INTF_KEY_SET_CHANNEL,3);
 212     intf_AssignKey(p_intf, SDLK_4,      INTF_KEY_SET_CHANNEL,4);
 213     intf_AssignKey(p_intf, SDLK_5,      INTF_KEY_SET_CHANNEL,5);
 214     intf_AssignKey(p_intf, SDLK_6,      INTF_KEY_SET_CHANNEL,6);
 215     intf_AssignKey(p_intf, SDLK_7,      INTF_KEY_SET_CHANNEL,7);
 216     intf_AssignKey(p_intf, SDLK_8,      INTF_KEY_SET_CHANNEL,8);
 217     intf_AssignKey(p_intf, SDLK_9,      INTF_KEY_SET_CHANNEL,9);
 218     intf_AssignKey(p_intf, SDLK_PLUS,   INTF_KEY_INC_VOLUME, 0);
 219     intf_AssignKey(p_intf, SDLK_MINUS,  INTF_KEY_DEC_VOLUME, 0);
 220     intf_AssignKey(p_intf, SDLK_m,      INTF_KEY_TOGGLE_VOLUME, 0);
 221     /* intf_AssignKey(p_intf,'M','M'); */
 222     intf_AssignKey(p_intf, SDLK_g,      INTF_KEY_DEC_GAMMA, 0);
 223     /* intf_AssignKey(p_intf,'G','G'); */
 224     intf_AssignKey(p_intf, SDLK_c,      INTF_KEY_TOGGLE_GRAYSCALE, 0);
 225     intf_AssignKey(p_intf, SDLK_SPACE,  INTF_KEY_TOGGLE_INTERFACE, 0);
 226     intf_AssignKey(p_intf, SDLK_i,      INTF_KEY_TOGGLE_INFO, 0);
 227     intf_AssignKey(p_intf, SDLK_s,      INTF_KEY_TOGGLE_SCALING, 0);
 228     intf_AssignKey(p_intf, SDLK_d,      INTF_KEY_DUMP_STREAM, 0); }
 229
 230     return( 0 );
 231 }
 232
 233 /*****************************************************************************
 234  * vout_Init: initialize SDL video thread output method
 235  *****************************************************************************
 236  * This function initialize the SDL display device.
 237  *****************************************************************************/
 238 static int vout_Init( vout_thread_t *p_vout )
 239 {
 240     /* This hack is hugly, but hey, you are, too. */
 241
 242     SDL_Overlay *   p_overlay;
 243
 244     p_overlay = SDL_CreateYUVOverlay(
 245            main_GetIntVariable( VOUT_WIDTH_VAR,VOUT_WIDTH_DEFAULT ),
 246            main_GetIntVariable( VOUT_HEIGHT_VAR,VOUT_HEIGHT_DEFAULT ),
 247                                       SDL_YV12_OVERLAY,
 248                                       p_vout->p_sys->p_display );
 249
 250     if( p_overlay == NULL )
 251     {
 252         intf_ErrMsg( "vout error: could not create SDL overlay" );
 253         p_vout->b_need_render = 1;
 254         return( 0 );
 255     }
 256
 257     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 258               p_overlay->hw_overlay ? "activated" : "unavailable !" );
 259     p_vout->b_need_render = !p_overlay->hw_overlay;
 260
 261     SDL_FreeYUVOverlay( p_overlay );
 262
 263     return( 0 );
 264 }
 265
 266 /*****************************************************************************
 267  * vout_End: terminate Sys video thread output method
 268  *****************************************************************************
 269  * Terminate an output method created by vout_SDLCreate
 270  *****************************************************************************/
 271 static void vout_End( vout_thread_t *p_vout )
 272 {
 273     SDLCloseDisplay( p_vout );
 274     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 275 }
 276
 277 /*****************************************************************************
 278  * vout_Destroy: destroy Sys video thread output method
 279  *****************************************************************************
 280  * Terminate an output method created by vout_SDLCreate
 281  *****************************************************************************/
 282 static void vout_Destroy( vout_thread_t *p_vout )
 283 {
 284     free( p_vout->p_sys );
 285 }
 286
 287 /*****************************************************************************
 288  * vout_Manage: handle Sys events
 289  *****************************************************************************
 290  * This function should be called regularly by video output thread. It returns
 291  * a non null value if an error occured.
 292  *****************************************************************************/
 293 static int vout_Manage( vout_thread_t *p_vout )
 294 {
 295     SDL_Event event;                                            /* SDL event */
 296     char *    p_key;
 297
 298     /* Process events */
 299     while( SDL_PollEvent(&event) )
 300     {
 301         switch( event.type )
 302         {
 303         case SDL_VIDEORESIZE:                          /* Resizing of window */
 304             p_vout->i_width = event.resize.w;
 305             p_vout->i_height = event.resize.h;
 306             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 307             break;
 308
 309         case SDL_MOUSEMOTION:
 310             if( p_vout->p_sys->b_cursor &&
 311                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 312             {
 313                 if( p_vout->p_sys->b_cursor_autohidden )
 314                 {
 315                     p_vout->p_sys->b_cursor_autohidden = 0;
 316                     SDL_ShowCursor( 1 );
 317                 }
 318                 else
 319                 {
 320                     p_vout->p_sys->i_lastmoved = mdate();
 321                 }
 322             }
 323             break;
 324
 325         case SDL_MOUSEBUTTONUP:
 326             switch( event.button.button )
 327             {
 328             case SDL_BUTTON_RIGHT:
 329                 p_main->p_intf->b_menu_change = 1;
 330                 break;
 331             }
 332             break;
 333
 334         case SDL_MOUSEBUTTONDOWN:
 335             switch( event.button.button )
 336             {
 337             case SDL_BUTTON_MIDDLE:
 338                 p_vout->i_changes |= VOUT_CURSOR_CHANGE;
 339                 break;
 340             }
 341             break;
 342
 343         case SDL_QUIT:
 344             intf_ProcessKey( p_main->p_intf, SDLK_q );
 345             break;
 346
 347         case SDL_KEYDOWN:                             /* if a key is pressed */
 348
 349             switch( event.key.keysym.sym )
 350             {
 351             case SDLK_f:                             /* switch to fullscreen */
 352                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 353                 break;
 354
 355             case SDLK_y:                               /* switch to hard YUV */
 356                 p_vout->i_changes |= VOUT_YUV_CHANGE;
 357                 break;
 358
 359             case SDLK_c:                                 /* toggle grayscale */
 360                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 361                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 362                 break;
 363
 364             case SDLK_i:                                      /* toggle info */
 365                 p_vout->b_info = ! p_vout->b_info;
 366                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 367                 break;
 368
 369             case SDLK_s:                                   /* toggle scaling */
 370                 p_vout->b_scale = ! p_vout->b_scale;
 371                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 372                 break;
 373
 374             case SDLK_SPACE:                             /* toggle interface */
 375                 p_vout->b_interface = ! p_vout->b_interface;
 376                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 377                 break;
 378
 379             case SDLK_F10:
 380                 network_ChannelJoin( 0 );
 381                 break;
 382             case SDLK_F1:
 383                 network_ChannelJoin( 1 );
 384                 break;
 385             case SDLK_F2:
 386                 network_ChannelJoin( 2 );
 387                 break;
 388             case SDLK_F3:
 389                 network_ChannelJoin( 3 );
 390                 break;
 391             case SDLK_F4:
 392                 network_ChannelJoin( 4 );
 393                 break;
 394             case SDLK_F5:
 395                 network_ChannelJoin( 5 );
 396                 break;
 397             case SDLK_F6:
 398                 network_ChannelJoin( 6 );
 399                 break;
 400             case SDLK_F7:
 401                 network_ChannelJoin( 7 );
 402                 break;
 403             case SDLK_F8:
 404                 network_ChannelJoin( 8 );
 405                 break;
 406             case SDLK_F9:
 407                 network_ChannelJoin( 9 );
 408                 break;
 409
 410             case SDLK_MENU:
 411                 p_main->p_intf->b_menu_change = 1;
 412                 break;
 413
 414             default:
 415                 p_key = SDL_GetKeyName( event.key.keysym.sym ) ;
 416                 if( intf_ProcessKey( p_main->p_intf,
 417                                      (char )event.key.keysym.sym ) )
 418                 {
 419                    intf_DbgMsg( "unhandled key '%c' (%i)",
 420                                 (char)event.key.keysym.sym,
 421                                 event.key.keysym.sym );
 422                 }
 423                 break;
 424             }
 425             break;
 426
 427         default:
 428             break;
 429         }
 430     }
 431
 432     /*
 433      * Size Change
 434      */
 435     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 436     {
 437         p_vout->p_sys->i_width = p_vout->i_width;
 438         p_vout->p_sys->i_height = p_vout->i_height;
 439
 440         /* Need to reopen display */
 441         SDLCloseDisplay( p_vout );
 442         if( SDLOpenDisplay( p_vout ) )
 443         {
 444           intf_ErrMsg( "vout error: can't reopen display after resize" );
 445           return( 1 );
 446         }
 447         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 448     }
 449
 450     /*
 451      * YUV Change
 452      */
 453     if( p_vout->i_changes & VOUT_YUV_CHANGE )
 454     {
 455         p_vout->b_need_render = ! p_vout->b_need_render;
 456
 457         /* Need to reopen display */
 458         SDLCloseDisplay( p_vout );
 459         if( SDLOpenDisplay( p_vout ) )
 460         {
 461           intf_ErrMsg( "error: can't reopen display after YUV change" );
 462           return( 1 );
 463         }
 464         p_vout->i_changes &= ~VOUT_YUV_CHANGE;
 465     }
 466
 467     /*
 468      * Fullscreen change
 469      */
 470     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 471     {
 472         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 473
 474         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 475
 476         p_vout->p_sys->b_cursor_autohidden = 0;
 477         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 478                         ! p_vout->p_sys->b_cursor_autohidden );
 479
 480         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 481     }
 482
 483     /*
 484      * Pointer change
 485      */
 486     if( ! p_vout->p_sys->b_cursor_autohidden &&
 487         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 488     {
 489         /* Hide the mouse automatically */
 490         p_vout->p_sys->b_cursor_autohidden = 1;
 491         SDL_ShowCursor( 0 );
 492     }
 493
 494     if( p_vout->i_changes & VOUT_CURSOR_CHANGE )
 495     {
 496         p_vout->p_sys->b_cursor = ! p_vout->p_sys->b_cursor;
 497
 498         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 499                         ! p_vout->p_sys->b_cursor_autohidden );
 500
 501         p_vout->i_changes &= ~VOUT_CURSOR_CHANGE;
 502     }
 503
 504     return( 0 );
 505 }
 506
 507 /*****************************************************************************
 508  * vout_SetPalette: sets an 8 bpp palette
 509  *****************************************************************************
 510  * This function sets the palette given as an argument. It does not return
 511  * anything, but could later send information on which colors it was unable
 512  * to set.
 513  *****************************************************************************/
 514 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 515                          u16 *blue, u16 *transp)
 516 {
 517      /* Create a display surface with a grayscale palette */
 518     SDL_Color colors[256];
 519     int i;
 520
 521     /* Fill colors with color information */
 522     for( i = 0; i < 256; i++ )
 523     {
 524         colors[ i ].r = red[ i ] >> 8;
 525         colors[ i ].g = green[ i ] >> 8;
 526         colors[ i ].b = blue[ i ] >> 8;
 527     }
 528
 529     /* Set palette */
 530     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 531     {
 532         intf_ErrMsg( "vout error: failed setting palette" );
 533     }
 534
 535 }
 536
 537 /*****************************************************************************
 538  * vout_Display: displays previously rendered output
 539  *****************************************************************************
 540  * This function send the currently rendered image to the display, wait until
 541  * it is displayed and switch the two rendering buffer, preparing next frame.
 542  *****************************************************************************/
 543 static void vout_Display( vout_thread_t *p_vout )
 544 {
 545     SDL_Rect    disp;
 546     if((p_vout->p_sys->p_display != NULL) && !p_vout->p_sys->b_reopen_display)
 547     {
 548         if( !p_vout->b_need_render )
 549         {
 550             /*
 551              * p_vout->p_rendered_pic->p_y/u/v contains the YUV buffers to
 552              * render
 553              */
 554             /* TODO: support for streams other than 4:2:0 */
 555             /* create the overlay if necessary */
 556             if( p_vout->p_sys->p_overlay == NULL )
 557             {
 558                 p_vout->p_sys->p_overlay = SDL_CreateYUVOverlay(
 559                                              p_vout->p_rendered_pic->i_width,
 560                                              p_vout->p_rendered_pic->i_height,
 561                                              SDL_YV12_OVERLAY,
 562                                              p_vout->p_sys->p_display );
 563
 564                 if( p_vout->p_sys->p_overlay != NULL )
 565                 {
 566                     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 567                                   p_vout->p_sys->p_overlay->hw_overlay
 568                                    ? "activated" : "unavailable !" );
 569                 }
 570             }
 571
 572             if( p_vout->p_sys->p_overlay == NULL )
 573             {
 574                 /* Overlay allocation failed, switch back to software mode */
 575                 intf_ErrMsg( "vout error: could not create SDL overlay" );
 576                 p_vout->b_need_render = 1;
 577             }
 578             else
 579             {
 580                 SDL_LockYUVOverlay( p_vout->p_sys->p_overlay );
 581                 /* copy the data into video buffers */
 582                 /* Y first */
 583                 memcpy( p_vout->p_sys->p_overlay->pixels[0],
 584                         p_vout->p_rendered_pic->p_y,
 585                         p_vout->p_sys->p_overlay->h *
 586                         p_vout->p_sys->p_overlay->pitches[0] );
 587                 /* then V */
 588                 memcpy( p_vout->p_sys->p_overlay->pixels[1],
 589                         p_vout->p_rendered_pic->p_v,
 590                         p_vout->p_sys->p_overlay->h *
 591                         p_vout->p_sys->p_overlay->pitches[1] / 2 );
 592                 /* and U */
 593                 memcpy( p_vout->p_sys->p_overlay->pixels[2],
 594                         p_vout->p_rendered_pic->p_u,
 595                         p_vout->p_sys->p_overlay->h *
 596                         p_vout->p_sys->p_overlay->pitches[2] / 2 );
 597
 598 #define BUFFER (&p_vout->p_buffer[p_vout->i_buffer_index])
 599                 disp.w = BUFFER->i_pic_width;
 600                 disp.h = BUFFER->i_pic_height;
 601 #undef BUFFER
 602                 disp.x = (p_vout->i_width - disp.w)/2;
 603                 disp.y = (p_vout->i_height - disp.h)/2;
 604
 605                 SDL_DisplayYUVOverlay( p_vout->p_sys->p_overlay , &disp );
 606                 SDL_UnlockYUVOverlay(p_vout->p_sys->p_overlay);
 607
 608                 return;
 609             }
 610         }
 611
 612         /* Software YUV: change display frame */
 613         SDL_Flip( p_vout->p_sys->p_display );
 614     }
 615 }
 616
 617 /* following functions are local */
 618
 619 /*****************************************************************************
 620  * SDLOpenDisplay: open and initialize SDL device
 621  *****************************************************************************
 622  * Open and initialize display according to preferences specified in the vout
 623  * thread fields.
 624  *****************************************************************************/
 625 static int SDLOpenDisplay( vout_thread_t *p_vout )
 626 {
 627     SDL_Rect    clipping_rect;
 628     Uint32      flags;
 629     int bpp;
 630     /* Open display
 631      * TODO: Check that we can request for a DOUBLEBUF HWSURFACE display
 632      */
 633
 634     /* init flags and cursor */
 635     flags = SDL_ANYFORMAT | SDL_HWPALETTE;
 636
 637     if( p_vout->b_fullscreen )
 638     {
 639         flags |= SDL_FULLSCREEN;
 640     }
 641     else
 642     {
 643         flags |= SDL_RESIZABLE;
 644     }
 645
 646     if( p_vout->b_need_render )
 647     {
 648         flags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
 649     }
 650     else
 651     {
 652         flags |= SDL_SWSURFACE; /* save video memory */
 653     }
 654
 655     bpp = SDL_VideoModeOK( p_vout->p_sys->i_width,
 656                            p_vout->p_sys->i_height,
 657                            p_vout->i_screen_depth, flags );
 658
 659     if( bpp == 0 )
 660     {
 661         intf_ErrMsg( "vout error: no video mode available" );
 662         return( 1 );
 663     }
 664
 665     p_vout->p_sys->p_display = SDL_SetVideoMode(p_vout->p_sys->i_width,
 666                                                 p_vout->p_sys->i_height,
 667                                                 bpp, flags);
 668
 669     if( p_vout->p_sys->p_display == NULL )
 670     {
 671         intf_ErrMsg( "vout error: cannot set video mode" );
 672         return( 1 );
 673     }
 674
 675     SDL_LockSurface( p_vout->p_sys->p_display );
 676
 677     SDL_WM_SetCaption( VOUT_TITLE " (SDL output)",
 678                        VOUT_TITLE " (SDL output)" );
 679     SDL_EventState(SDL_KEYUP , SDL_IGNORE);                /* ignore keys up */
 680
 681     if( p_vout->b_need_render )
 682     {
 683         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 684         SDL_Flip(p_vout->p_sys->p_display);
 685         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 686         SDL_Flip(p_vout->p_sys->p_display);
 687
 688         /* Set clipping for text */
 689         clipping_rect.x = 0;
 690         clipping_rect.y = 0;
 691         clipping_rect.w = p_vout->p_sys->p_display->w;
 692         clipping_rect.h = p_vout->p_sys->p_display->h;
 693         SDL_SetClipRect(p_vout->p_sys->p_display, &clipping_rect);
 694
 695         /* Set thread information */
 696         p_vout->i_width =           p_vout->p_sys->p_display->w;
 697         p_vout->i_height =          p_vout->p_sys->p_display->h;
 698         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 699
 700         p_vout->i_screen_depth =
 701             p_vout->p_sys->p_display->format->BitsPerPixel;
 702         p_vout->i_bytes_per_pixel =
 703             p_vout->p_sys->p_display->format->BytesPerPixel;
 704
 705         p_vout->i_red_mask =        p_vout->p_sys->p_display->format->Rmask;
 706         p_vout->i_green_mask =      p_vout->p_sys->p_display->format->Gmask;
 707         p_vout->i_blue_mask =       p_vout->p_sys->p_display->format->Bmask;
 708
 709         /* FIXME: palette in 8bpp ?? */
 710         /* Set and initialize buffers */
 711         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 712                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 713     }
 714     else
 715     {
 716         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 717         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 718
 719         /* Set thread information */
 720         p_vout->i_width =           p_vout->p_sys->p_display->w;
 721         p_vout->i_height =          p_vout->p_sys->p_display->h;
 722         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 723
 724         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 725                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 726     }
 727
 728     p_vout->p_sys->b_reopen_display = 0;
 729
 730     return( 0 );
 731 }
 732
 733 /*****************************************************************************
 734  * SDLCloseDisplay: close and reset SDL device
 735  *****************************************************************************
 736  * This function returns all resources allocated by SDLOpenDisplay and restore
 737  * the original state of the device.
 738  *****************************************************************************/
 739 static void SDLCloseDisplay( vout_thread_t *p_vout )
 740 {
 741     if( p_vout->p_sys->p_display != NULL )
 742     {
 743         if( p_vout->p_sys->p_overlay != NULL )
 744         {
 745             SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 746             p_vout->p_sys->p_overlay = NULL;
 747         }
 748
 749         SDL_UnlockSurface ( p_vout->p_sys->p_display );
 750         SDL_FreeSurface( p_vout->p_sys->p_display );
 751         p_vout->p_sys->p_display = NULL;
 752     }
 753 }
 754