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) 1998-2001 VideoLAN
   5  * $Id: vout_sdl.c,v 1.66 2001/12/03 16:18:37 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_INCLUDE_FILE
  44
  45 #include "config.h"
  46 #include "common.h"
  47 #include "intf_msg.h"
  48 #include "threads.h"
  49 #include "mtime.h"
  50 #include "tests.h"
  51
  52 #include "video.h"
  53 #include "video_output.h"
  54
  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 = p_vout->i_width;
 197     p_vout->p_sys->i_height = p_vout->i_height;
 198
 199     p_vout->p_sys->p_display = NULL;
 200     p_vout->p_sys->p_overlay = NULL;
 201
 202     if( SDLOpenDisplay(p_vout) )
 203     {
 204         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 205         free( p_vout->p_sys );
 206         return( 1 );
 207     }
 208
 209     /* FIXME: get rid of this ASAP, it's FUCKING UGLY */
 210     { intf_thread_t * p_intf = p_main->p_intf;
 211     intf_AssignKey(p_intf, SDLK_q,      INTF_KEY_QUIT, 0);
 212     intf_AssignKey(p_intf, SDLK_ESCAPE, INTF_KEY_QUIT, 0);
 213     /* intf_AssignKey(p_intf,3,'Q'); */
 214     intf_AssignKey(p_intf, SDLK_0,      INTF_KEY_SET_CHANNEL,0);
 215     intf_AssignKey(p_intf, SDLK_1,      INTF_KEY_SET_CHANNEL,1);
 216     intf_AssignKey(p_intf, SDLK_2,      INTF_KEY_SET_CHANNEL,2);
 217     intf_AssignKey(p_intf, SDLK_3,      INTF_KEY_SET_CHANNEL,3);
 218     intf_AssignKey(p_intf, SDLK_4,      INTF_KEY_SET_CHANNEL,4);
 219     intf_AssignKey(p_intf, SDLK_5,      INTF_KEY_SET_CHANNEL,5);
 220     intf_AssignKey(p_intf, SDLK_6,      INTF_KEY_SET_CHANNEL,6);
 221     intf_AssignKey(p_intf, SDLK_7,      INTF_KEY_SET_CHANNEL,7);
 222     intf_AssignKey(p_intf, SDLK_8,      INTF_KEY_SET_CHANNEL,8);
 223     intf_AssignKey(p_intf, SDLK_9,      INTF_KEY_SET_CHANNEL,9);
 224     intf_AssignKey(p_intf, SDLK_PLUS,   INTF_KEY_INC_VOLUME, 0);
 225     intf_AssignKey(p_intf, SDLK_MINUS,  INTF_KEY_DEC_VOLUME, 0);
 226     intf_AssignKey(p_intf, SDLK_m,      INTF_KEY_TOGGLE_VOLUME, 0);
 227     /* intf_AssignKey(p_intf,'M','M'); */
 228     intf_AssignKey(p_intf, SDLK_g,      INTF_KEY_DEC_GAMMA, 0);
 229     /* intf_AssignKey(p_intf,'G','G'); */
 230     intf_AssignKey(p_intf, SDLK_c,      INTF_KEY_TOGGLE_GRAYSCALE, 0);
 231     intf_AssignKey(p_intf, SDLK_SPACE,  INTF_KEY_TOGGLE_INTERFACE, 0);
 232     intf_AssignKey(p_intf, SDLK_i,      INTF_KEY_TOGGLE_INFO, 0);
 233     intf_AssignKey(p_intf, SDLK_s,      INTF_KEY_TOGGLE_SCALING, 0);
 234     intf_AssignKey(p_intf, SDLK_d,      INTF_KEY_DUMP_STREAM, 0); }
 235
 236     return( 0 );
 237 }
 238
 239 /*****************************************************************************
 240  * vout_Init: initialize SDL video thread output method
 241  *****************************************************************************
 242  * This function initialize the SDL display device.
 243  *****************************************************************************/
 244 static int vout_Init( vout_thread_t *p_vout )
 245 {
 246     /* This hack is hugly, but hey, you are, too. */
 247
 248     SDL_Overlay *   p_overlay;
 249
 250     p_overlay = SDL_CreateYUVOverlay(
 251            main_GetIntVariable( VOUT_WIDTH_VAR,VOUT_WIDTH_DEFAULT ),
 252            main_GetIntVariable( VOUT_HEIGHT_VAR,VOUT_HEIGHT_DEFAULT ),
 253                                       SDL_YV12_OVERLAY,
 254                                       p_vout->p_sys->p_display );
 255
 256     if( p_overlay == NULL )
 257     {
 258         intf_ErrMsg( "vout error: could not create SDL overlay" );
 259         p_vout->b_need_render = 1;
 260         return( 0 );
 261     }
 262
 263     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 264               p_overlay->hw_overlay ? "activated" : "unavailable !" );
 265     p_vout->b_need_render = !p_overlay->hw_overlay;
 266
 267     SDL_FreeYUVOverlay( p_overlay );
 268
 269     return( 0 );
 270 }
 271
 272 /*****************************************************************************
 273  * vout_End: terminate Sys video thread output method
 274  *****************************************************************************
 275  * Terminate an output method created by vout_SDLCreate
 276  *****************************************************************************/
 277 static void vout_End( vout_thread_t *p_vout )
 278 {
 279     SDLCloseDisplay( p_vout );
 280     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 281 }
 282
 283 /*****************************************************************************
 284  * vout_Destroy: destroy Sys video thread output method
 285  *****************************************************************************
 286  * Terminate an output method created by vout_SDLCreate
 287  *****************************************************************************/
 288 static void vout_Destroy( vout_thread_t *p_vout )
 289 {
 290     free( p_vout->p_sys );
 291 }
 292
 293 /*****************************************************************************
 294  * vout_Manage: handle Sys events
 295  *****************************************************************************
 296  * This function should be called regularly by video output thread. It returns
 297  * a non null value if an error occured.
 298  *****************************************************************************/
 299 static int vout_Manage( vout_thread_t *p_vout )
 300 {
 301     SDL_Event event;                                            /* SDL event */
 302     char *    p_key;
 303
 304     /* Process events */
 305     while( SDL_PollEvent(&event) )
 306     {
 307         switch( event.type )
 308         {
 309         case SDL_VIDEORESIZE:                          /* Resizing of window */
 310             p_vout->i_width = event.resize.w;
 311             p_vout->i_height = event.resize.h;
 312             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 313             break;
 314
 315         case SDL_MOUSEMOTION:
 316             if( p_vout->p_sys->b_cursor &&
 317                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 318             {
 319                 if( p_vout->p_sys->b_cursor_autohidden )
 320                 {
 321                     p_vout->p_sys->b_cursor_autohidden = 0;
 322                     SDL_ShowCursor( 1 );
 323                 }
 324                 else
 325                 {
 326                     p_vout->p_sys->i_lastmoved = mdate();
 327                 }
 328             }
 329             break;
 330
 331         case SDL_MOUSEBUTTONUP:
 332             switch( event.button.button )
 333             {
 334             case SDL_BUTTON_RIGHT:
 335                 p_main->p_intf->b_menu_change = 1;
 336                 break;
 337             }
 338             break;
 339
 340         case SDL_MOUSEBUTTONDOWN:
 341             switch( event.button.button )
 342             {
 343             case SDL_BUTTON_MIDDLE:
 344                 p_vout->i_changes |= VOUT_CURSOR_CHANGE;
 345                 break;
 346             }
 347             break;
 348
 349         case SDL_QUIT:
 350             intf_ProcessKey( p_main->p_intf, SDLK_q );
 351             break;
 352
 353         case SDL_KEYDOWN:                             /* if a key is pressed */
 354
 355             switch( event.key.keysym.sym )
 356             {
 357             case SDLK_f:                             /* switch to fullscreen */
 358                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 359                 break;
 360
 361             case SDLK_y:                               /* switch to hard YUV */
 362                 p_vout->i_changes |= VOUT_YUV_CHANGE;
 363                 break;
 364
 365             case SDLK_c:                                 /* toggle grayscale */
 366                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 367                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 368                 break;
 369
 370             case SDLK_i:                                      /* toggle info */
 371                 p_vout->b_info = ! p_vout->b_info;
 372                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 373                 break;
 374
 375             case SDLK_s:                                   /* toggle scaling */
 376                 p_vout->b_scale = ! p_vout->b_scale;
 377                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 378                 break;
 379
 380             case SDLK_SPACE:                             /* toggle interface */
 381                 p_vout->b_interface = ! p_vout->b_interface;
 382                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 383                 break;
 384
 385             case SDLK_F10:
 386                 network_ChannelJoin( 0 );
 387                 break;
 388             case SDLK_F1:
 389                 network_ChannelJoin( 1 );
 390                 break;
 391             case SDLK_F2:
 392                 network_ChannelJoin( 2 );
 393                 break;
 394             case SDLK_F3:
 395                 network_ChannelJoin( 3 );
 396                 break;
 397             case SDLK_F4:
 398                 network_ChannelJoin( 4 );
 399                 break;
 400             case SDLK_F5:
 401                 network_ChannelJoin( 5 );
 402                 break;
 403             case SDLK_F6:
 404                 network_ChannelJoin( 6 );
 405                 break;
 406             case SDLK_F7:
 407                 network_ChannelJoin( 7 );
 408                 break;
 409             case SDLK_F8:
 410                 network_ChannelJoin( 8 );
 411                 break;
 412             case SDLK_F9:
 413                 network_ChannelJoin( 9 );
 414                 break;
 415
 416             case SDLK_MENU:
 417                 p_main->p_intf->b_menu_change = 1;
 418                 break;
 419
 420             default:
 421                 p_key = SDL_GetKeyName( event.key.keysym.sym ) ;
 422                 if( intf_ProcessKey( p_main->p_intf,
 423                                      (char )event.key.keysym.sym ) )
 424                 {
 425                    intf_DbgMsg( "unhandled key '%c' (%i)",
 426                                 (char)event.key.keysym.sym,
 427                                 event.key.keysym.sym );
 428                 }
 429                 break;
 430             }
 431             break;
 432
 433         default:
 434             break;
 435         }
 436     }
 437
 438     /*
 439      * Size Change
 440      */
 441     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 442     {
 443         p_vout->p_sys->i_width = p_vout->i_width;
 444         p_vout->p_sys->i_height = p_vout->i_height;
 445
 446         /* Need to reopen display */
 447         SDLCloseDisplay( p_vout );
 448         if( SDLOpenDisplay( p_vout ) )
 449         {
 450           intf_ErrMsg( "vout error: can't reopen display after resize" );
 451           return( 1 );
 452         }
 453         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 454     }
 455
 456     /*
 457      * YUV Change
 458      */
 459     if( p_vout->i_changes & VOUT_YUV_CHANGE )
 460     {
 461         p_vout->b_need_render = ! p_vout->b_need_render;
 462
 463         /* Need to reopen display */
 464         SDLCloseDisplay( p_vout );
 465         if( SDLOpenDisplay( p_vout ) )
 466         {
 467           intf_ErrMsg( "error: can't reopen display after YUV change" );
 468           return( 1 );
 469         }
 470         p_vout->i_changes &= ~VOUT_YUV_CHANGE;
 471     }
 472
 473     /*
 474      * Fullscreen change
 475      */
 476     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 477     {
 478         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 479
 480         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 481
 482         p_vout->p_sys->b_cursor_autohidden = 0;
 483         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 484                         ! p_vout->p_sys->b_cursor_autohidden );
 485
 486         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 487     }
 488
 489     /*
 490      * Pointer change
 491      */
 492     if( ! p_vout->p_sys->b_cursor_autohidden &&
 493         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 494     {
 495         /* Hide the mouse automatically */
 496         p_vout->p_sys->b_cursor_autohidden = 1;
 497         SDL_ShowCursor( 0 );
 498     }
 499
 500     if( p_vout->i_changes & VOUT_CURSOR_CHANGE )
 501     {
 502         p_vout->p_sys->b_cursor = ! p_vout->p_sys->b_cursor;
 503
 504         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 505                         ! p_vout->p_sys->b_cursor_autohidden );
 506
 507         p_vout->i_changes &= ~VOUT_CURSOR_CHANGE;
 508     }
 509
 510     return( 0 );
 511 }
 512
 513 /*****************************************************************************
 514  * vout_SetPalette: sets an 8 bpp palette
 515  *****************************************************************************
 516  * This function sets the palette given as an argument. It does not return
 517  * anything, but could later send information on which colors it was unable
 518  * to set.
 519  *****************************************************************************/
 520 static void vout_SetPalette( p_vout_thread_t p_vout, u16 *red, u16 *green,
 521                          u16 *blue, u16 *transp)
 522 {
 523      /* Create a display surface with a grayscale palette */
 524     SDL_Color colors[256];
 525     int i;
 526
 527     /* Fill colors with color information */
 528     for( i = 0; i < 256; i++ )
 529     {
 530         colors[ i ].r = red[ i ] >> 8;
 531         colors[ i ].g = green[ i ] >> 8;
 532         colors[ i ].b = blue[ i ] >> 8;
 533     }
 534
 535     /* Set palette */
 536     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 537     {
 538         intf_ErrMsg( "vout error: failed setting palette" );
 539     }
 540
 541 }
 542
 543 /*****************************************************************************
 544  * vout_Display: displays previously rendered output
 545  *****************************************************************************
 546  * This function send the currently rendered image to the display, wait until
 547  * it is displayed and switch the two rendering buffer, preparing next frame.
 548  *****************************************************************************/
 549 static void vout_Display( vout_thread_t *p_vout )
 550 {
 551     SDL_Rect    disp;
 552
 553     if((p_vout->p_sys->p_display != NULL) && !p_vout->p_sys->b_reopen_display)
 554     {
 555         if( !p_vout->b_need_render )
 556         {
 557             /*
 558              * p_vout->p_rendered_pic->p_y/u/v contains the YUV buffers to
 559              * render
 560              */
 561             /* TODO: support for streams other than 4:2:0 */
 562             if( p_vout->p_rendered_pic->i_type != YUV_420_PICTURE )
 563             {
 564                 intf_ErrMsg("sdl vout error: no support for that kind of pictures");
 565                 return;
 566             }
 567             /* create the overlay if necessary */
 568             if( p_vout->p_sys->p_overlay == NULL )
 569             {
 570                 p_vout->p_sys->p_overlay = SDL_CreateYUVOverlay(
 571                                              p_vout->p_rendered_pic->i_width,
 572                                              p_vout->p_rendered_pic->i_height,
 573                                              SDL_YV12_OVERLAY,
 574                                              p_vout->p_sys->p_display );
 575
 576                 if( p_vout->p_sys->p_overlay != NULL )
 577                 {
 578                     intf_WarnMsg( 2, "vout: YUV acceleration %s",
 579                                   p_vout->p_sys->p_overlay->hw_overlay
 580                                    ? "activated" : "unavailable !" );
 581                 }
 582             }
 583
 584             if( p_vout->p_sys->p_overlay == NULL )
 585             {
 586                 /* Overlay allocation failed, switch back to software mode */
 587                 intf_ErrMsg( "vout error: could not create SDL overlay" );
 588                 p_vout->b_need_render = 1;
 589             }
 590             else
 591             {
 592                 int i_x, i_y, i_w, i_h;
 593
 594                 SDL_LockYUVOverlay( p_vout->p_sys->p_overlay );
 595                 /* copy the data into video buffers */
 596                 /* Y first */
 597                 pf_fast_memcpy( p_vout->p_sys->p_overlay->pixels[0],
 598                                 p_vout->p_rendered_pic->p_y,
 599                                 p_vout->p_sys->p_overlay->h *
 600                                 p_vout->p_sys->p_overlay->pitches[0] );
 601                 /* then V */
 602                 pf_fast_memcpy( p_vout->p_sys->p_overlay->pixels[1],
 603                                 p_vout->p_rendered_pic->p_v,
 604                                 p_vout->p_sys->p_overlay->h *
 605                                 p_vout->p_sys->p_overlay->pitches[1] / 2 );
 606                 /* and U */
 607                 pf_fast_memcpy( p_vout->p_sys->p_overlay->pixels[2],
 608                                 p_vout->p_rendered_pic->p_u,
 609                                 p_vout->p_sys->p_overlay->h *
 610                                 p_vout->p_sys->p_overlay->pitches[2] / 2 );
 611
 612                 OutputCoords( p_vout->p_rendered_pic, 1,
 613                               p_vout->p_sys->i_width,
 614                               p_vout->p_sys->i_height,
 615                               &i_x, &i_y,
 616                               &i_w, &i_h);
 617                 disp.x = i_x;
 618                 disp.y = i_y;
 619                 disp.w = i_w;
 620                 disp.h = i_h;
 621
 622                 SDL_DisplayYUVOverlay( p_vout->p_sys->p_overlay , &disp );
 623                 SDL_UnlockYUVOverlay(p_vout->p_sys->p_overlay);
 624
 625                 return;
 626             }
 627         }
 628
 629         /* Software YUV: change display frame */
 630         SDL_Flip( p_vout->p_sys->p_display );
 631     }
 632 }
 633
 634 /* following functions are local */
 635
 636 /*****************************************************************************
 637  * SDLOpenDisplay: open and initialize SDL device
 638  *****************************************************************************
 639  * Open and initialize display according to preferences specified in the vout
 640  * thread fields.
 641  *****************************************************************************/
 642 static int SDLOpenDisplay( vout_thread_t *p_vout )
 643 {
 644     SDL_Rect    clipping_rect;
 645     Uint32      flags;
 646     int bpp;
 647     /* Open display
 648      * TODO: Check that we can request for a DOUBLEBUF HWSURFACE display
 649      */
 650
 651     /* init flags and cursor */
 652     flags = SDL_ANYFORMAT | SDL_HWPALETTE;
 653
 654     if( p_vout->b_fullscreen )
 655     {
 656         flags |= SDL_FULLSCREEN;
 657     }
 658     else
 659     {
 660         flags |= SDL_RESIZABLE;
 661     }
 662
 663     if( p_vout->b_need_render )
 664     {
 665         flags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
 666     }
 667     else
 668     {
 669         flags |= SDL_SWSURFACE; /* save video memory */
 670     }
 671
 672     bpp = SDL_VideoModeOK( p_vout->p_sys->i_width,
 673                            p_vout->p_sys->i_height,
 674                            p_vout->i_screen_depth, flags );
 675
 676     if( bpp == 0 )
 677     {
 678         intf_ErrMsg( "vout error: no video mode available" );
 679         return( 1 );
 680     }
 681
 682     p_vout->p_sys->p_display = SDL_SetVideoMode(p_vout->p_sys->i_width,
 683                                                 p_vout->p_sys->i_height,
 684                                                 bpp, flags);
 685
 686     if( p_vout->p_sys->p_display == NULL )
 687     {
 688         intf_ErrMsg( "vout error: cannot set video mode" );
 689         return( 1 );
 690     }
 691
 692     SDL_LockSurface( p_vout->p_sys->p_display );
 693
 694     SDL_WM_SetCaption( VOUT_TITLE " (SDL output)",
 695                        VOUT_TITLE " (SDL output)" );
 696     SDL_EventState(SDL_KEYUP , SDL_IGNORE);                /* ignore keys up */
 697
 698     if( p_vout->b_need_render )
 699     {
 700         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 701         SDL_Flip(p_vout->p_sys->p_display);
 702         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 703         SDL_Flip(p_vout->p_sys->p_display);
 704
 705         /* Set clipping for text */
 706         clipping_rect.x = 0;
 707         clipping_rect.y = 0;
 708         clipping_rect.w = p_vout->p_sys->p_display->w;
 709         clipping_rect.h = p_vout->p_sys->p_display->h;
 710         SDL_SetClipRect(p_vout->p_sys->p_display, &clipping_rect);
 711
 712         /* Set thread information */
 713         p_vout->i_width =           p_vout->p_sys->p_display->w;
 714         p_vout->i_height =          p_vout->p_sys->p_display->h;
 715         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 716
 717         p_vout->i_screen_depth =
 718             p_vout->p_sys->p_display->format->BitsPerPixel;
 719         p_vout->i_bytes_per_pixel =
 720             p_vout->p_sys->p_display->format->BytesPerPixel;
 721
 722         p_vout->i_red_mask =        p_vout->p_sys->p_display->format->Rmask;
 723         p_vout->i_green_mask =      p_vout->p_sys->p_display->format->Gmask;
 724         p_vout->i_blue_mask =       p_vout->p_sys->p_display->format->Bmask;
 725
 726         /* FIXME: palette in 8bpp ?? */
 727         /* Set and initialize buffers */
 728         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 729                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 730     }
 731     else
 732     {
 733         p_vout->p_sys->p_sdl_buf[ 0 ] = p_vout->p_sys->p_display->pixels;
 734         p_vout->p_sys->p_sdl_buf[ 1 ] = p_vout->p_sys->p_display->pixels;
 735
 736         /* Set thread information */
 737         p_vout->i_width =           p_vout->p_sys->p_display->w;
 738         p_vout->i_height =          p_vout->p_sys->p_display->h;
 739         p_vout->i_bytes_per_line =  p_vout->p_sys->p_display->pitch;
 740
 741         p_vout->pf_setbuffers( p_vout, p_vout->p_sys->p_sdl_buf[ 0 ],
 742                                        p_vout->p_sys->p_sdl_buf[ 1 ] );
 743     }
 744
 745     p_vout->p_sys->b_reopen_display = 0;
 746
 747     return( 0 );
 748 }
 749
 750 /*****************************************************************************
 751  * SDLCloseDisplay: close and reset SDL device
 752  *****************************************************************************
 753  * This function returns all resources allocated by SDLOpenDisplay and restore
 754  * the original state of the device.
 755  *****************************************************************************/
 756 static void SDLCloseDisplay( vout_thread_t *p_vout )
 757 {
 758     if( p_vout->p_sys->p_display != NULL )
 759     {
 760         if( p_vout->p_sys->p_overlay != NULL )
 761         {
 762             SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 763             p_vout->p_sys->p_overlay = NULL;
 764         }
 765
 766         SDL_UnlockSurface ( p_vout->p_sys->p_display );
 767         SDL_FreeSurface( p_vout->p_sys->p_display );
 768         p_vout->p_sys->p_display = NULL;
 769     }
 770 }
 771
 772 /*****************************************************************************
 773  * OutputCoords: compute the dimensions of the destination image
 774  *****************************************************************************
 775  * This based on some code in SetBufferPicture... , it is also in use in the
 776  * the xvideo plugin. Maybe we should think about putting standard video
 777  * processing functions in a common library ?
 778  *****************************************************************************/
 779 static void OutputCoords( const picture_t *p_pic, const boolean_t scale,
 780                           const int win_w, const int win_h,
 781                           int *dx, int *dy, int *w, int *h )
 782 {
 783     if( !scale )
 784     {
 785         *w = p_pic->i_width; *h = p_pic->i_height;
 786     }
 787     else
 788     {
 789         *w = win_w;
 790         switch( p_pic->i_aspect_ratio )
 791         {
 792             case AR_3_4_PICTURE:
 793                 *h = win_w * 3 / 4;
 794                 break;
 795
 796             case AR_16_9_PICTURE:
 797                 *h = win_w * 9 / 16;
 798                 break;
 799
 800             case AR_221_1_PICTURE:
 801                 *h = win_w * 100 / 221;
 802                 break;
 803
 804             case AR_SQUARE_PICTURE:
 805             default:
 806                 *h = win_w * p_pic->i_height / p_pic->i_width;
 807                 break;
 808         }
 809
 810         if( *h > win_h )
 811         {
 812             *h = win_h;
 813             switch( p_pic->i_aspect_ratio )
 814             {
 815                 case AR_3_4_PICTURE:
 816                     *w = win_h * 4 / 3;
 817                     break;
 818
 819                 case AR_16_9_PICTURE:
 820                     *w = win_h * 16 / 9;
 821                     break;
 822
 823                 case AR_221_1_PICTURE:
 824                     *w = win_h * 221 / 100;
 825                     break;
 826
 827                 case AR_SQUARE_PICTURE:
 828                 default:
 829                     *w = win_h * p_pic->i_width / p_pic->i_height;
 830                     break;
 831             }
 832         }
 833     }
 834
 835     /* Set picture position */
 836     *dx = (win_w - *w) / 2;
 837     *dy = (win_h - *h) / 2;
 838 }