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 1.62 2001/08/06 20:45:55 gbazin 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_INCLUDE_FILE
  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 static void OutputCoords       ( const picture_t *p_pic, const boolean_t scale,
 117                                  const int win_w, const int win_h,
 118                                  int *dx, int *dy, int *w, int *h );
 119
 120 /*****************************************************************************
 121  * Functions exported as capabilities. They are declared as static so that
 122  * we don't pollute the namespace too much.
 123  *****************************************************************************/
 124 void _M( vout_getfunctions )( function_list_t * p_function_list )
 125 {
 126     p_function_list->pf_probe = vout_Probe;
 127     p_function_list->functions.vout.pf_create     = vout_Create;
 128     p_function_list->functions.vout.pf_init       = vout_Init;
 129     p_function_list->functions.vout.pf_end        = vout_End;
 130     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 131     p_function_list->functions.vout.pf_manage     = vout_Manage;
 132     p_function_list->functions.vout.pf_display    = vout_Display;
 133     p_function_list->functions.vout.pf_setpalette = vout_SetPalette;
 134 }
 135
 136 /*****************************************************************************
 137  * vout_Probe: probe the video driver and return a score
 138  *****************************************************************************
 139  * This function tries to initialize SDL and returns a score to the
 140  * plugin manager so that it can select the best plugin.
 141  *****************************************************************************/
 142 static int vout_Probe( probedata_t *p_data )
 143 {
 144     if( TestMethod( VOUT_METHOD_VAR, "sdl" ) )
 145     {
 146         return( 999 );
 147     }
 148
 149     return( 100 );
 150 }
 151
 152 /*****************************************************************************
 153  * vout_Create: allocate SDL video thread output method
 154  *****************************************************************************
 155  * This function allocate and initialize a SDL vout method. It uses some of the
 156  * vout properties to choose the correct mode, and change them according to the
 157  * mode actually used.
 158  *****************************************************************************/
 159 static int vout_Create( vout_thread_t *p_vout )
 160 {
 161     /* Allocate structure */
 162     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 163     if( p_vout->p_sys == NULL )
 164     {
 165         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 166         return( 1 );
 167     }
 168
 169     /* Initialize library */
 170     if( SDL_Init( SDL_INIT_VIDEO
 171 #ifndef WIN32
 172     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 173                 | SDL_INIT_EVENTTHREAD
 174 #endif
 175 #ifdef DEBUG
 176     /* In debug mode you may want vlc to dump a core instead of staying
 177      * stuck */
 178                 | SDL_INIT_NOPARACHUTE
 179 #endif
 180                 ) < 0 )
 181     {
 182         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 183         free( p_vout->p_sys );
 184         return( 1 );
 185     }
 186
 187     p_vout->p_sys->b_cursor = 1; /* TODO should be done with a main_GetInt.. */
 188
 189     p_vout->p_sys->b_cursor_autohidden = 0;
 190     p_vout->p_sys->i_lastmoved = mdate();
 191
 192     p_vout->b_fullscreen = main_GetIntVariable( VOUT_FULLSCREEN_VAR,
 193                                 VOUT_FULLSCREEN_DEFAULT );
 194     p_vout->p_sys->b_overlay = main_GetIntVariable( VOUT_OVERLAY_VAR,
 195                                 VOUT_OVERLAY_DEFAULT );
 196     p_vout->p_sys->i_width = main_GetIntVariable( VOUT_WIDTH_VAR,
 197                                 VOUT_WIDTH_DEFAULT );
 198     p_vout->p_sys->i_height = main_GetIntVariable( VOUT_HEIGHT_VAR,
 199                                 VOUT_HEIGHT_DEFAULT );
 200
 201     p_vout->p_sys->p_display = NULL;
 202     p_vout->p_sys->p_overlay = NULL;
 203
 204     if( SDLOpenDisplay(p_vout) )
 205     {
 206         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 207         free( p_vout->p_sys );
 208         return( 1 );
 209     }
 210
 211     /* FIXME: get rid of this ASAP, it's FUCKING UGLY */
 212     { intf_thread_t * p_intf = p_main->p_intf;
 213     intf_AssignKey(p_intf, SDLK_q,      INTF_KEY_QUIT, 0);
 214     intf_AssignKey(p_intf, SDLK_ESCAPE, INTF_KEY_QUIT, 0);
 215     /* intf_AssignKey(p_intf,3,'Q'); */
 216     intf_AssignKey(p_intf, SDLK_0,      INTF_KEY_SET_CHANNEL,0);
 217     intf_AssignKey(p_intf, SDLK_1,      INTF_KEY_SET_CHANNEL,1);
 218     intf_AssignKey(p_intf, SDLK_2,      INTF_KEY_SET_CHANNEL,2);
 219     intf_AssignKey(p_intf, SDLK_3,      INTF_KEY_SET_CHANNEL,3);
 220     intf_AssignKey(p_intf, SDLK_4,      INTF_KEY_SET_CHANNEL,4);
 221     intf_AssignKey(p_intf, SDLK_5,      INTF_KEY_SET_CHANNEL,5);
 222     intf_AssignKey(p_intf, SDLK_6,      INTF_KEY_SET_CHANNEL,6);
 223     intf_AssignKey(p_intf, SDLK_7,      INTF_KEY_SET_CHANNEL,7);
 224     intf_AssignKey(p_intf, SDLK_8,      INTF_KEY_SET_CHANNEL,8);
 225     intf_AssignKey(p_intf, SDLK_9,      INTF_KEY_SET_CHANNEL,9);
 226     intf_AssignKey(p_intf, SDLK_PLUS,   INTF_KEY_INC_VOLUME, 0);
 227     intf_AssignKey(p_intf, SDLK_MINUS,  INTF_KEY_DEC_VOLUME, 0);
 228     intf_AssignKey(p_intf, SDLK_m,      INTF_KEY_TOGGLE_VOLUME, 0);
 229     /* intf_AssignKey(p_intf,'M','M'); */
 230     intf_AssignKey(p_intf, SDLK_g,      INTF_KEY_DEC_GAMMA, 0);
 231     /* intf_AssignKey(p_intf,'G','G'); */
 232     intf_AssignKey(p_intf, SDLK_c,      INTF_KEY_TOGGLE_GRAYSCALE, 0);
 233     intf_AssignKey(p_intf, SDLK_SPACE,  INTF_KEY_TOGGLE_INTERFACE, 0);
 234     intf_AssignKey(p_intf, SDLK_i,      INTF_KEY_TOGGLE_INFO, 0);
 235     intf_AssignKey(p_intf, SDLK_s,      INTF_KEY_TOGGLE_SCALING, 0);
 236     intf_AssignKey(p_intf, SDLK_d,      INTF_KEY_DUMP_STREAM, 0); }
 237
 238     return( 0 );
 239 }
 240
 241 /*****************************************************************************
 242  * vout_Init: initialize SDL video thread output method
 243  *****************************************************************************
 244  * This function initialize the SDL display device.
 245  *****************************************************************************/
 246 static int vout_Init( vout_thread_t *p_vout )
 247 {
 248     /* This hack is hugly, but hey, you are, too. */
 249
 250     SDL_Overlay *   p_overlay;
 251
 252     p_overlay = SDL_CreateYUVOverlay(
 253            main_GetIntVariable( VOUT_WIDTH_VAR,VOUT_WIDTH_DEFAULT ),
 254            main_GetIntVariable( VOUT_HEIGHT_VAR,VOUT_HEIGHT_DEFAULT ),
 255                                       SDL_YV12_OVERLAY,
 256                                       p_vout->p_sys->p_display );
 257
 258     if( p_overlay == NULL )
 259     {
 260         intf_ErrMsg( "vout error: could not create SDL overlay" );
 261         p_vout->b_need_render = 1;
 262         return( 0 );
 263     }
 264
 265     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 266               p_overlay->hw_overlay ? "activated" : "unavailable !" );
 267     p_vout->b_need_render = !p_overlay->hw_overlay;
 268
 269     SDL_FreeYUVOverlay( p_overlay );
 270
 271     return( 0 );
 272 }
 273
 274 /*****************************************************************************
 275  * vout_End: terminate Sys video thread output method
 276  *****************************************************************************
 277  * Terminate an output method created by vout_SDLCreate
 278  *****************************************************************************/
 279 static void vout_End( vout_thread_t *p_vout )
 280 {
 281     SDLCloseDisplay( p_vout );
 282     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 283 }
 284
 285 /*****************************************************************************
 286  * vout_Destroy: destroy Sys video thread output method
 287  *****************************************************************************
 288  * Terminate an output method created by vout_SDLCreate
 289  *****************************************************************************/
 290 static void vout_Destroy( vout_thread_t *p_vout )
 291 {
 292     free( p_vout->p_sys );
 293 }
 294
 295 /*****************************************************************************
 296  * vout_Manage: handle Sys events
 297  *****************************************************************************
 298  * This function should be called regularly by video output thread. It returns
 299  * a non null value if an error occured.
 300  *****************************************************************************/
 301 static int vout_Manage( vout_thread_t *p_vout )
 302 {
 303     SDL_Event event;                                            /* SDL event */
 304     char *    p_key;
 305
 306     /* Process events */
 307     while( SDL_PollEvent(&event) )
 308     {
 309         switch( event.type )
 310         {
 311         case SDL_VIDEORESIZE:                          /* Resizing of window */
 312             p_vout->i_width = event.resize.w;
 313             p_vout->i_height = event.resize.h;
 314             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 315             break;
 316
 317         case SDL_MOUSEMOTION:
 318             if( p_vout->p_sys->b_cursor &&
 319                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 320             {
 321                 if( p_vout->p_sys->b_cursor_autohidden )
 322                 {
 323                     p_vout->p_sys->b_cursor_autohidden = 0;
 324                     SDL_ShowCursor( 1 );
 325                 }
 326                 else
 327                 {
 328                     p_vout->p_sys->i_lastmoved = mdate();
 329                 }
 330             }
 331             break;
 332
 333         case SDL_MOUSEBUTTONUP:
 334             switch( event.button.button )
 335             {
 336             case SDL_BUTTON_RIGHT:
 337                 p_main->p_intf->b_menu_change = 1;
 338                 break;
 339             }
 340             break;
 341
 342         case SDL_MOUSEBUTTONDOWN:
 343             switch( event.button.button )
 344             {
 345             case SDL_BUTTON_MIDDLE:
 346                 p_vout->i_changes |= VOUT_CURSOR_CHANGE;
 347                 break;
 348             }
 349             break;
 350
 351         case SDL_QUIT:
 352             intf_ProcessKey( p_main->p_intf, SDLK_q );
 353             break;
 354
 355         case SDL_KEYDOWN:                             /* if a key is pressed */
 356
 357             switch( event.key.keysym.sym )
 358             {
 359             case SDLK_f:                             /* switch to fullscreen */
 360                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 361                 break;
 362
 363             case SDLK_y:                               /* switch to hard YUV */
 364                 p_vout->i_changes |= VOUT_YUV_CHANGE;
 365                 break;
 366
 367             case SDLK_c:                                 /* toggle grayscale */
 368                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 369                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 370                 break;
 371
 372             case SDLK_i:                                      /* toggle info */
 373                 p_vout->b_info = ! p_vout->b_info;
 374                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 375                 break;
 376
 377             case SDLK_s:                                   /* toggle scaling */
 378                 p_vout->b_scale = ! p_vout->b_scale;
 379                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 380                 break;
 381
 382             case SDLK_SPACE:                             /* toggle interface */
 383                 p_vout->b_interface = ! p_vout->b_interface;
 384                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 385                 break;
 386
 387             case SDLK_F10:
 388                 network_ChannelJoin( 0 );
 389                 break;
 390             case SDLK_F1:
 391                 network_ChannelJoin( 1 );
 392                 break;
 393             case SDLK_F2:
 394                 network_ChannelJoin( 2 );
 395                 break;
 396             case SDLK_F3:
 397                 network_ChannelJoin( 3 );
 398                 break;
 399             case SDLK_F4:
 400                 network_ChannelJoin( 4 );
 401                 break;
 402             case SDLK_F5:
 403                 network_ChannelJoin( 5 );
 404                 break;
 405             case SDLK_F6:
 406                 network_ChannelJoin( 6 );
 407                 break;
 408             case SDLK_F7:
 409                 network_ChannelJoin( 7 );
 410                 break;
 411             case SDLK_F8:
 412                 network_ChannelJoin( 8 );
 413                 break;
 414             case SDLK_F9:
 415                 network_ChannelJoin( 9 );
 416                 break;
 417
 418             case SDLK_MENU:
 419                 p_main->p_intf->b_menu_change = 1;
 420                 break;
 421
 422             default:
 423                 p_key = SDL_GetKeyName( event.key.keysym.sym ) ;
 424                 if( intf_ProcessKey( p_main->p_intf,
 425                                      (char )event.key.keysym.sym ) )
 426                 {
 427                    intf_DbgMsg( "unhandled key '%c' (%i)",
 428                                 (char)event.key.keysym.sym,
 429                                 event.key.keysym.sym );
 430                 }
 431                 break;
 432             }
 433             break;
 434
 435         default:
 436             break;
 437         }
 438     }
 439
 440     /*
 441      * Size Change
 442      */
 443     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 444     {
 445         p_vout->p_sys->i_width = p_vout->i_width;
 446         p_vout->p_sys->i_height = p_vout->i_height;
 447
 448         /* Need to reopen display */
 449         SDLCloseDisplay( p_vout );
 450         if( SDLOpenDisplay( p_vout ) )
 451         {
 452           intf_ErrMsg( "vout error: can't reopen display after resize" );
 453           return( 1 );
 454         }
 455         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 456     }
 457
 458     /*
 459      * YUV Change
 460      */
 461     if( p_vout->i_changes & VOUT_YUV_CHANGE )
 462     {
 463         p_vout->b_need_render = ! p_vout->b_need_render;
 464
 465         /* Need to reopen display */
 466         SDLCloseDisplay( p_vout );
 467         if( SDLOpenDisplay( p_vout ) )
 468         {
 469           intf_ErrMsg( "error: can't reopen display after YUV change" );
 470           return( 1 );
 471         }
 472         p_vout->i_changes &= ~VOUT_YUV_CHANGE;
 473     }
 474
 475     /*
 476      * Fullscreen change
 477      */
 478     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 479     {
 480         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 481
 482         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 483
 484         p_vout->p_sys->b_cursor_autohidden = 0;
 485         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 486                         ! p_vout->p_sys->b_cursor_autohidden );
 487
 488         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 489     }
 490
 491     /*
 492      * Pointer change
 493      */
 494     if( ! p_vout->p_sys->b_cursor_autohidden &&
 495         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 496     {
 497         /* Hide the mouse automatically */
 498         p_vout->p_sys->b_cursor_autohidden = 1;
 499         SDL_ShowCursor( 0 );
 500     }
 501
 502     if( p_vout->i_changes & VOUT_CURSOR_CHANGE )
 503     {
 504         p_vout->p_sys->b_cursor = ! p_vout->p_sys->b_cursor;
 505
 506         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 507                         ! p_vout->p_sys->b_cursor_autohidden );
 508
 509         p_vout->i_changes &= ~VOUT_CURSOR_CHANGE;
 510     }
 511
 512     return( 0 );
 513 }
 514
 515 /*****************************************************************************
 516  * vout_SetPalette: sets an 8 bpp palette
 517  *****************************************************************************
 518  * This function sets the palette given as an argument. It does not return
 519  * anything, but could later send information on which colors it was unable
 520  * to set.
 521  *****************************************************************************/
 522 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 523                          u16 *blue, u16 *transp)
 524 {
 525      /* Create a display surface with a grayscale palette */
 526     SDL_Color colors[256];
 527     int i;
 528
 529     /* Fill colors with color information */
 530     for( i = 0; i < 256; i++ )
 531     {
 532         colors[ i ].r = red[ i ] >> 8;
 533         colors[ i ].g = green[ i ] >> 8;
 534         colors[ i ].b = blue[ i ] >> 8;
 535     }
 536
 537     /* Set palette */
 538     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 539     {
 540         intf_ErrMsg( "vout error: failed setting palette" );
 541     }
 542
 543 }
 544
 545 /*****************************************************************************
 546  * vout_Display: displays previously rendered output
 547  *****************************************************************************
 548  * This function send the currently rendered image to the display, wait until
 549  * it is displayed and switch the two rendering buffer, preparing next frame.
 550  *****************************************************************************/
 551 static void vout_Display( vout_thread_t *p_vout )
 552 {
 553     SDL_Rect    disp;
 554
 555     if((p_vout->p_sys->p_display != NULL) && !p_vout->p_sys->b_reopen_display)
 556     {
 557         if( !p_vout->b_need_render )
 558         {
 559             /*
 560              * p_vout->p_rendered_pic->p_y/u/v contains the YUV buffers to
 561              * render
 562              */
 563             /* TODO: support for streams other than 4:2:0 */
 564             /* create the overlay if necessary */
 565             if( p_vout->p_sys->p_overlay == NULL )
 566             {
 567                 p_vout->p_sys->p_overlay = SDL_CreateYUVOverlay(
 568                                              p_vout->p_rendered_pic->i_width,
 569                                              p_vout->p_rendered_pic->i_height,
 570                                              SDL_YV12_OVERLAY,
 571                                              p_vout->p_sys->p_display );
 572
 573                 if( p_vout->p_sys->p_overlay != NULL )
 574                 {
 575                     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 576                                   p_vout->p_sys->p_overlay->hw_overlay
 577                                    ? "activated" : "unavailable !" );
 578                 }
 579             }
 580
 581             if( p_vout->p_sys->p_overlay == NULL )
 582             {
 583                 /* Overlay allocation failed, switch back to software mode */
 584                 intf_ErrMsg( "vout error: could not create SDL overlay" );
 585                 p_vout->b_need_render = 1;
 586             }
 587             else
 588             {
 589                 int i_x, i_y, i_w, i_h;
 590
 591                 SDL_LockYUVOverlay( p_vout->p_sys->p_overlay );
 592                 /* copy the data into video buffers */
 593                 /* Y first */
 594                 memcpy( p_vout->p_sys->p_overlay->pixels[0],
 595                         p_vout->p_rendered_pic->p_y,
 596                         p_vout->p_sys->p_overlay->h *
 597                         p_vout->p_sys->p_overlay->pitches[0] );
 598                 /* then V */
 599                 memcpy( p_vout->p_sys->p_overlay->pixels[1],
 600                         p_vout->p_rendered_pic->p_v,
 601                         p_vout->p_sys->p_overlay->h *
 602                         p_vout->p_sys->p_overlay->pitches[1] / 2 );
 603                 /* and U */
 604                 memcpy( p_vout->p_sys->p_overlay->pixels[2],
 605                         p_vout->p_rendered_pic->p_u,
 606                         p_vout->p_sys->p_overlay->h *
 607                         p_vout->p_sys->p_overlay->pitches[2] / 2 );
 608
 609                 OutputCoords( p_vout->p_rendered_pic, 1,
 610                               p_vout->p_sys->i_width,
 611                               p_vout->p_sys->i_height,
 612                               &i_x, &i_y,
 613                               &i_w, &i_h);
 614                 disp.x = i_x;
 615                 disp.y = i_y;
 616                 disp.w = i_w;
 617                 disp.h = i_h;
 618
 619                 SDL_DisplayYUVOverlay( p_vout->p_sys->p_overlay , &disp );
 620                 SDL_UnlockYUVOverlay(p_vout->p_sys->p_overlay);
 621
 622                 return;
 623             }
 624         }
 625
 626         /* Software YUV: change display frame */
 627         SDL_Flip( p_vout->p_sys->p_display );
 628     }
 629 }
 630
 631 /* following functions are local */
 632
 633 /*****************************************************************************
 634  * SDLOpenDisplay: open and initialize SDL device
 635  *****************************************************************************
 636  * Open and initialize display according to preferences specified in the vout
 637  * thread fields.
 638  *****************************************************************************/
 639 static int SDLOpenDisplay( vout_thread_t *p_vout )
 640 {
 641     SDL_Rect    clipping_rect;
 642     Uint32      flags;
 643     int bpp;
 644     /* Open display
 645      * TODO: Check that we can request for a DOUBLEBUF HWSURFACE display
 646      */
 647
 648     /* init flags and cursor */
 649     flags = SDL_ANYFORMAT | SDL_HWPALETTE;
 650
 651     if( p_vout->b_fullscreen )
 652     {
 653         flags |= SDL_FULLSCREEN;
 654     }
 655     else
 656     {
 657         flags |= SDL_RESIZABLE;
 658     }
 659
 660     if( p_vout->b_need_render )
 661     {
 662         flags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
 663     }
 664     else
 665     {
 666         flags |= SDL_SWSURFACE; /* save video memory */
 667     }
 668
 669     bpp = SDL_VideoModeOK( p_vout->p_sys->i_width,
 670                            p_vout->p_sys->i_height,
 671                            p_vout->i_screen_depth, flags );
 672
 673     if( bpp == 0 )
 674     {
 675         intf_ErrMsg( "vout error: no video mode available" );
 676         return( 1 );
 677     }
 678
 679     p_vout->p_sys->p_display = SDL_SetVideoMode(p_vout->p_sys->i_width,
 680                                                 p_vout->p_sys->i_height,
 681                                                 bpp, flags);
 682
 683     if( p_vout->p_sys->p_display == NULL )
 684     {
 685         intf_ErrMsg( "vout error: cannot set video mode" );
 686         return( 1 );
 687     }
 688
 689     SDL_LockSurface( p_vout->p_sys->p_display );
 690
 691     SDL_WM_SetCaption( VOUT_TITLE " (SDL output)",
 692                        VOUT_TITLE " (SDL output)" );
 693     SDL_EventState(SDL_KEYUP , SDL_IGNORE);                /* ignore keys up */
 694
 695     if( p_vout->b_need_render )
 696     {
 697         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 698         SDL_Flip(p_vout->p_sys->p_display);
 699         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 700         SDL_Flip(p_vout->p_sys->p_display);
 701
 702         /* Set clipping for text */
 703         clipping_rect.x = 0;
 704         clipping_rect.y = 0;
 705         clipping_rect.w = p_vout->p_sys->p_display->w;
 706         clipping_rect.h = p_vout->p_sys->p_display->h;
 707         SDL_SetClipRect(p_vout->p_sys->p_display, &clipping_rect);
 708
 709         /* Set thread information */
 710         p_vout->i_width =           p_vout->p_sys->p_display->w;
 711         p_vout->i_height =          p_vout->p_sys->p_display->h;
 712         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 713
 714         p_vout->i_screen_depth =
 715             p_vout->p_sys->p_display->format->BitsPerPixel;
 716         p_vout->i_bytes_per_pixel =
 717             p_vout->p_sys->p_display->format->BytesPerPixel;
 718
 719         p_vout->i_red_mask =        p_vout->p_sys->p_display->format->Rmask;
 720         p_vout->i_green_mask =      p_vout->p_sys->p_display->format->Gmask;
 721         p_vout->i_blue_mask =       p_vout->p_sys->p_display->format->Bmask;
 722
 723         /* FIXME: palette in 8bpp ?? */
 724         /* Set and initialize buffers */
 725         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 726                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 727     }
 728     else
 729     {
 730         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 731         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 732
 733         /* Set thread information */
 734         p_vout->i_width =           p_vout->p_sys->p_display->w;
 735         p_vout->i_height =          p_vout->p_sys->p_display->h;
 736         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 737
 738         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 739                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 740     }
 741
 742     p_vout->p_sys->b_reopen_display = 0;
 743
 744     return( 0 );
 745 }
 746
 747 /*****************************************************************************
 748  * SDLCloseDisplay: close and reset SDL device
 749  *****************************************************************************
 750  * This function returns all resources allocated by SDLOpenDisplay and restore
 751  * the original state of the device.
 752  *****************************************************************************/
 753 static void SDLCloseDisplay( vout_thread_t *p_vout )
 754 {
 755     if( p_vout->p_sys->p_display != NULL )
 756     {
 757         if( p_vout->p_sys->p_overlay != NULL )
 758         {
 759             SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 760             p_vout->p_sys->p_overlay = NULL;
 761         }
 762
 763         SDL_UnlockSurface ( p_vout->p_sys->p_display );
 764         SDL_FreeSurface( p_vout->p_sys->p_display );
 765         p_vout->p_sys->p_display = NULL;
 766     }
 767 }
 768
 769 /*****************************************************************************
 770  * OutputCoords: compute the dimensions of the destination image
 771  *****************************************************************************
 772  * This based on some code in SetBufferPicture... , it is also in use in the
 773  * the xvideo plugin. Maybe we should think about putting standard video
 774  * processing functions in a common library ?
 775  *****************************************************************************/
 776 static void OutputCoords( const picture_t *p_pic, const boolean_t scale,
 777                           const int win_w, const int win_h,
 778                           int *dx, int *dy, int *w, int *h )
 779 {
 780     if( !scale )
 781     {
 782         *w = p_pic->i_width; *h = p_pic->i_height;
 783     }
 784     else
 785     {
 786         *w = win_w;
 787         switch( p_pic->i_aspect_ratio )
 788         {
 789             case AR_3_4_PICTURE:
 790                 *h = win_w * 3 / 4;
 791                 break;
 792
 793             case AR_16_9_PICTURE:
 794                 *h = win_w * 9 / 16;
 795                 break;
 796
 797             case AR_221_1_PICTURE:
 798                 *h = win_w * 100 / 221;
 799                 break;
 800
 801             case AR_SQUARE_PICTURE:
 802             default:
 803                 *h = win_w * p_pic->i_height / p_pic->i_width;
 804                 break;
 805         }
 806
 807         if( *h > win_h )
 808         {
 809             *h = win_h;
 810             switch( p_pic->i_aspect_ratio )
 811             {
 812                 case AR_3_4_PICTURE:
 813                     *w = win_h * 4 / 3;
 814                     break;
 815
 816                 case AR_16_9_PICTURE:
 817                     *w = win_h * 16 / 9;
 818                     break;
 819
 820                 case AR_221_1_PICTURE:
 821                     *w = win_h * 221 / 100;
 822                     break;
 823
 824                 case AR_SQUARE_PICTURE:
 825                 default:
 826                     *w = win_h * p_pic->i_width / p_pic->i_height;
 827                     break;
 828             }
 829         }
 830     }
 831
 832     /* Set picture position */
 833     *dx = (win_w - *w) / 2;
 834     *dy = (win_h - *h) / 2;
 835 }