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 1.85 2002/03/18 19:14:52 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 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include <errno.h>                                                 /* ENOMEM */
  30 #include <stdlib.h>                                                /* free() */
  31 #include <string.h>                                            /* strerror() */
  32
  33 #include <videolan/vlc.h>
  34
  35 #include <sys/types.h>
  36 #ifndef WIN32
  37 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  38 #endif
  39
  40 #include SDL_INCLUDE_FILE
  41
  42 #include "netutils.h"
  43
  44 #include "video.h"
  45 #include "video_output.h"
  46
  47 #include "interface.h"
  48
  49 #include "stream_control.h"                 /* needed by input_ext-intf.h... */
  50 #include "input_ext-intf.h"
  51
  52 #define SDL_MAX_DIRECTBUFFERS 10
  53 #define SDL_DEFAULT_BPP 16
  54
  55 /*****************************************************************************
  56  * vout_sys_t: video output SDL method descriptor
  57  *****************************************************************************
  58  * This structure is part of the video output thread descriptor.
  59  * It describes the SDL specific properties of an output thread.
  60  *****************************************************************************/
  61 typedef struct vout_sys_s
  62 {
  63     SDL_Surface *   p_display;                             /* display device */
  64
  65     int i_width;
  66     int i_height;
  67
  68     /* For YUV output */
  69     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  70
  71     /* For RGB output */
  72     int i_surfaces;
  73
  74     boolean_t   b_cursor;
  75     boolean_t   b_cursor_autohidden;
  76     mtime_t     i_lastmoved;
  77
  78 } vout_sys_t;
  79
  80 /*****************************************************************************
  81  * picture_sys_t: direct buffer method descriptor
  82  *****************************************************************************
  83  * This structure is part of the picture descriptor, it describes the
  84  * SDL specific properties of a direct buffer.
  85  *****************************************************************************/
  86 typedef struct picture_sys_s
  87 {
  88     SDL_Overlay *p_overlay;
  89
  90 } picture_sys_t;
  91
  92 /*****************************************************************************
  93  * Seeking function TODO: put this in a generic location !
  94  *****************************************************************************/
  95 static __inline__ void vout_Seek( off_t i_seek )
  96 {
  97     off_t i_tell;
  98
  99     vlc_mutex_lock( &p_input_bank->lock );
 100     if( p_input_bank->pp_input[0] != NULL )
 101     {
 102 #define S p_input_bank->pp_input[0]->stream
 103         i_tell = S.p_selected_area->i_tell + i_seek * (off_t)50 * S.i_mux_rate;
 104
 105         i_tell = ( i_tell <= 0 /*S.p_selected_area->i_start*/ )
 106                    ? 0 /*S.p_selected_area->i_start*/
 107                    : ( i_tell >= S.p_selected_area->i_size )
 108                        ? S.p_selected_area->i_size
 109                        : i_tell;
 110
 111         input_Seek( p_input_bank->pp_input[0], i_tell );
 112 #undef S
 113     }
 114     vlc_mutex_unlock( &p_input_bank->lock );
 115 }
 116
 117 /*****************************************************************************
 118  * Local prototypes.
 119  *****************************************************************************/
 120 static int  vout_Create     ( struct vout_thread_s * );
 121 static int  vout_Init       ( struct vout_thread_s * );
 122 static void vout_End        ( struct vout_thread_s * );
 123 static void vout_Destroy    ( struct vout_thread_s * );
 124 static int  vout_Manage     ( struct vout_thread_s * );
 125 static void vout_Render     ( struct vout_thread_s *, struct picture_s * );
 126 static void vout_Display    ( struct vout_thread_s *, struct picture_s * );
 127
 128 static int  OpenDisplay     ( struct vout_thread_s * );
 129 static void CloseDisplay    ( struct vout_thread_s * );
 130 static int  NewPicture      ( struct vout_thread_s *, struct picture_s * );
 131 static void SetPalette      ( struct vout_thread_s *, u16 *, u16 *, u16 * );
 132
 133 /*****************************************************************************
 134  * Functions exported as capabilities. They are declared as static so that
 135  * we don't pollute the namespace too much.
 136  *****************************************************************************/
 137 void _M( vout_getfunctions )( function_list_t * p_function_list )
 138 {
 139     p_function_list->functions.vout.pf_create     = vout_Create;
 140     p_function_list->functions.vout.pf_init       = vout_Init;
 141     p_function_list->functions.vout.pf_end        = vout_End;
 142     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 143     p_function_list->functions.vout.pf_manage     = vout_Manage;
 144     p_function_list->functions.vout.pf_render     = vout_Render;
 145     p_function_list->functions.vout.pf_display    = vout_Display;
 146 }
 147
 148 /*****************************************************************************
 149  * vout_Create: allocate SDL video thread output method
 150  *****************************************************************************
 151  * This function allocate and initialize a SDL vout method. It uses some of the
 152  * vout properties to choose the correct mode, and change them according to the
 153  * mode actually used.
 154  *****************************************************************************/
 155 static int vout_Create( vout_thread_t *p_vout )
 156 {
 157     char *psz_method;
 158
 159     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 160     {
 161         return( 1 );
 162     }
 163
 164     /* Allocate structure */
 165     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 166     if( p_vout->p_sys == NULL )
 167     {
 168         intf_ErrMsg( "vout error: can't create p_sys (%s)", strerror(ENOMEM) );
 169         return( 1 );
 170     }
 171
 172     psz_method = config_GetPszVariable( "vout" );
 173     if( psz_method )
 174     {
 175         while( *psz_method && *psz_method != ':' )
 176         {
 177             psz_method++;
 178         }
 179
 180         if( *psz_method )
 181         {
 182             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 183         }
 184     }
 185
 186     /* Initialize library */
 187     if( SDL_Init( SDL_INIT_VIDEO
 188 #ifndef WIN32
 189     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 190                 | SDL_INIT_EVENTTHREAD
 191 #endif
 192 #ifdef DEBUG
 193     /* In debug mode you may want vlc to dump a core instead of staying
 194      * stuck */
 195                 | SDL_INIT_NOPARACHUTE
 196 #endif
 197                 ) < 0 )
 198     {
 199         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 200         free( p_vout->p_sys );
 201         return( 1 );
 202     }
 203
 204     p_vout->p_sys->b_cursor = 1;
 205     p_vout->p_sys->b_cursor_autohidden = 0;
 206     p_vout->p_sys->i_lastmoved = mdate();
 207
 208     if( p_vout->render.i_height * p_vout->render.i_aspect
 209          >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
 210     {
 211         p_vout->p_sys->i_width = p_vout->render.i_height
 212             * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 213         p_vout->p_sys->i_height = p_vout->render.i_height;
 214     }
 215     else
 216     {
 217         p_vout->p_sys->i_width = p_vout->render.i_width;
 218         p_vout->p_sys->i_height = p_vout->render.i_width
 219             * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 220     }
 221
 222 #if 0
 223     if( p_vout->p_sys->i_width <= 300 && p_vout->p_sys->i_height <= 300 )
 224     {
 225         p_vout->p_sys->i_width <<= 1;
 226         p_vout->p_sys->i_height <<= 1;
 227     }
 228     else if( p_vout->p_sys->i_width <= 400 && p_vout->p_sys->i_height <= 400 )
 229     {
 230         p_vout->p_sys->i_width += p_vout->p_sys->i_width >> 1;
 231         p_vout->p_sys->i_height += p_vout->p_sys->i_height >> 1;
 232     }
 233 #endif
 234
 235     if( OpenDisplay( p_vout ) )
 236     {
 237         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 238         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 239         free( p_vout->p_sys );
 240         return( 1 );
 241     }
 242
 243     return( 0 );
 244 }
 245
 246 /*****************************************************************************
 247  * vout_Init: initialize SDL video thread output method
 248  *****************************************************************************
 249  * This function initialize the SDL display device.
 250  *****************************************************************************/
 251 static int vout_Init( vout_thread_t *p_vout )
 252 {
 253     int i_index;
 254     picture_t *p_pic;
 255
 256     p_vout->p_sys->i_surfaces = 0;
 257
 258     I_OUTPUTPICTURES = 0;
 259
 260     /* Initialize the output structure */
 261     if( p_vout->p_sys->p_overlay == NULL )
 262     {
 263         /* All we have is an RGB image with square pixels */
 264         p_vout->output.i_width  = p_vout->p_sys->i_width;
 265         p_vout->output.i_height = p_vout->p_sys->i_height;
 266         p_vout->output.i_aspect = p_vout->p_sys->i_width
 267                                    * VOUT_ASPECT_FACTOR
 268                                    / p_vout->p_sys->i_height;
 269     }
 270     else
 271     {
 272         /* We may need to convert the chroma, but at least we keep the
 273          * aspect ratio */
 274         p_vout->output.i_width  = p_vout->render.i_width;
 275         p_vout->output.i_height = p_vout->render.i_height;
 276         p_vout->output.i_aspect = p_vout->render.i_aspect;
 277     }
 278
 279     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 280     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 281     {
 282         p_pic = NULL;
 283
 284         /* Find an empty picture slot */
 285         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 286         {
 287             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 288             {
 289                 p_pic = p_vout->p_picture + i_index;
 290                 break;
 291             }
 292         }
 293
 294         /* Allocate the picture if we found one */
 295         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 296         {
 297             break;
 298         }
 299
 300         p_pic->i_status = DESTROYED_PICTURE;
 301         p_pic->i_type   = DIRECT_PICTURE;
 302
 303         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 304
 305         I_OUTPUTPICTURES++;
 306     }
 307
 308     return( 0 );
 309 }
 310
 311 /*****************************************************************************
 312  * vout_End: terminate Sys video thread output method
 313  *****************************************************************************
 314  * Terminate an output method created by vout_SDLCreate
 315  *****************************************************************************/
 316 static void vout_End( vout_thread_t *p_vout )
 317 {
 318     int i_index;
 319
 320     /* Free the output buffers we allocated */
 321     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 322     {
 323         i_index--;
 324         if( p_vout->p_sys->p_overlay == NULL )
 325         {
 326             /* RGB picture */
 327         }
 328         else
 329         {
 330             SDL_UnlockYUVOverlay(
 331                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 332             SDL_FreeYUVOverlay(
 333                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 334         }
 335         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 336     }
 337 }
 338
 339 /*****************************************************************************
 340  * vout_Destroy: destroy Sys video thread output method
 341  *****************************************************************************
 342  * Terminate an output method created by vout_SDLCreate
 343  *****************************************************************************/
 344 static void vout_Destroy( vout_thread_t *p_vout )
 345 {
 346     CloseDisplay( p_vout );
 347
 348     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 349
 350     free( p_vout->p_sys );
 351 }
 352
 353 /*****************************************************************************
 354  * vout_Manage: handle Sys events
 355  *****************************************************************************
 356  * This function should be called regularly by video output thread. It returns
 357  * a non null value if an error occured.
 358  *****************************************************************************/
 359 static int vout_Manage( vout_thread_t *p_vout )
 360 {
 361     SDL_Event event;                                            /* SDL event */
 362
 363     /* Process events */
 364     while( SDL_PollEvent(&event) )
 365     {
 366         switch( event.type )
 367         {
 368         case SDL_VIDEORESIZE:                          /* Resizing of window */
 369             p_vout->p_sys->i_width = event.resize.w;
 370             p_vout->p_sys->i_height = event.resize.h;
 371             CloseDisplay( p_vout );
 372             OpenDisplay( p_vout );
 373             break;
 374
 375         case SDL_MOUSEMOTION:
 376             if( p_vout->p_sys->b_cursor &&
 377                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 378             {
 379                 if( p_vout->p_sys->b_cursor_autohidden )
 380                 {
 381                     p_vout->p_sys->b_cursor_autohidden = 0;
 382                     SDL_ShowCursor( 1 );
 383                 }
 384                 else
 385                 {
 386                     p_vout->p_sys->i_lastmoved = mdate();
 387                 }
 388             }
 389             break;
 390
 391         case SDL_MOUSEBUTTONUP:
 392             switch( event.button.button )
 393             {
 394             case SDL_BUTTON_RIGHT:
 395                 p_main->p_intf->b_menu_change = 1;
 396                 break;
 397             }
 398             break;
 399
 400         case SDL_MOUSEBUTTONDOWN:
 401             switch( event.button.button )
 402             {
 403             case SDL_BUTTON_LEFT:
 404                 /* In this part we will eventually manage
 405                  * clicks for DVD navigation for instance. For the
 406                  * moment just pause the stream. */
 407                 input_SetStatus( p_input_bank->pp_input[0],
 408                                  INPUT_STATUS_PAUSE );
 409                 break;
 410
 411             case 4:
 412                 vout_Seek( 15 );
 413                 break;
 414
 415             case 5:
 416                 vout_Seek( -15 );
 417                 break;
 418             }
 419             break;
 420
 421         case SDL_QUIT:
 422             p_main->p_intf->b_die = 1;
 423             break;
 424
 425         case SDL_KEYDOWN:                             /* if a key is pressed */
 426
 427             switch( event.key.keysym.sym )
 428             {
 429             case SDLK_q:                                             /* quit */
 430             case SDLK_ESCAPE:
 431                 p_main->p_intf->b_die = 1;
 432                 break;
 433
 434             case SDLK_f:                             /* switch to fullscreen */
 435                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 436                 break;
 437
 438             case SDLK_c:                                 /* toggle grayscale */
 439                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 440                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 441                 break;
 442
 443             case SDLK_i:                                      /* toggle info */
 444                 p_vout->b_info = ! p_vout->b_info;
 445                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 446                 break;
 447
 448             case SDLK_s:                                   /* toggle scaling */
 449                 p_vout->b_scale = ! p_vout->b_scale;
 450                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 451                 break;
 452
 453             case SDLK_SPACE:                             /* toggle interface */
 454                 p_vout->b_interface = ! p_vout->b_interface;
 455                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 456                 break;
 457
 458             case SDLK_MENU:
 459                 p_main->p_intf->b_menu_change = 1;
 460                 break;
 461
 462             case SDLK_LEFT:
 463                 vout_Seek( -5 );
 464                 break;
 465
 466             case SDLK_RIGHT:
 467                 vout_Seek( 5 );
 468                 break;
 469
 470             case SDLK_UP:
 471                 vout_Seek( 60 );
 472                 break;
 473
 474             case SDLK_DOWN:
 475                 vout_Seek( -60 );
 476                 break;
 477
 478             case SDLK_F10: network_ChannelJoin( 0 ); break;
 479             case SDLK_F1:  network_ChannelJoin( 1 ); break;
 480             case SDLK_F2:  network_ChannelJoin( 2 ); break;
 481             case SDLK_F3:  network_ChannelJoin( 3 ); break;
 482             case SDLK_F4:  network_ChannelJoin( 4 ); break;
 483             case SDLK_F5:  network_ChannelJoin( 5 ); break;
 484             case SDLK_F6:  network_ChannelJoin( 6 ); break;
 485             case SDLK_F7:  network_ChannelJoin( 7 ); break;
 486             case SDLK_F8:  network_ChannelJoin( 8 ); break;
 487             case SDLK_F9:  network_ChannelJoin( 9 ); break;
 488
 489             default:
 490                 break;
 491             }
 492             break;
 493
 494         default:
 495             break;
 496         }
 497     }
 498
 499     /* Fullscreen change */
 500     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 501     {
 502         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 503
 504         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 505
 506         p_vout->p_sys->b_cursor_autohidden = 0;
 507         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 508                         ! p_vout->p_sys->b_cursor_autohidden );
 509
 510         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 511     }
 512
 513     /* Pointer change */
 514     if( ! p_vout->p_sys->b_cursor_autohidden &&
 515         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 516     {
 517         /* Hide the mouse automatically */
 518         p_vout->p_sys->b_cursor_autohidden = 1;
 519         SDL_ShowCursor( 0 );
 520     }
 521
 522     return( 0 );
 523 }
 524
 525 /*****************************************************************************
 526  * vout_Render: render previously calculated output
 527  *****************************************************************************/
 528 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 529 {
 530     ;
 531 }
 532
 533 /*****************************************************************************
 534  * vout_Display: displays previously rendered output
 535  *****************************************************************************
 536  * This function sends the currently rendered image to the display.
 537  *****************************************************************************/
 538 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 539 {
 540     int x, y, w, h;
 541     SDL_Rect disp;
 542
 543     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 544                        &x, &y, &w, &h );
 545     disp.x = x;
 546     disp.y = y;
 547     disp.w = w;
 548     disp.h = h;
 549
 550     if( p_vout->p_sys->p_overlay == NULL )
 551     {
 552         /* RGB picture */
 553         SDL_Flip( p_vout->p_sys->p_display );
 554     }
 555     else
 556     {
 557         /* Overlay picture */
 558         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 559         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 560         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 561     }
 562 }
 563
 564 /* following functions are local */
 565
 566 /*****************************************************************************
 567  * OpenDisplay: open and initialize SDL device
 568  *****************************************************************************
 569  * Open and initialize display according to preferences specified in the vout
 570  * thread fields.
 571  *****************************************************************************/
 572 static int OpenDisplay( vout_thread_t *p_vout )
 573 {
 574     Uint32 i_flags;
 575     int    i_bpp;
 576
 577     /* Initialize flags and cursor */
 578     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 579     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 580
 581     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 582                              SDL_DEFAULT_BPP, i_flags );
 583     if( i_bpp == 0 )
 584     {
 585         intf_ErrMsg( "vout error: no video mode available" );
 586         return( 1 );
 587     }
 588
 589     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 590                                                  p_vout->p_sys->i_height,
 591                                                  i_bpp, i_flags );
 592
 593     if( p_vout->p_sys->p_display == NULL )
 594     {
 595         intf_ErrMsg( "vout error: cannot set video mode" );
 596         return( 1 );
 597     }
 598
 599     SDL_LockSurface( p_vout->p_sys->p_display );
 600
 601     /* Choose the chroma we will try first. */
 602     switch( p_vout->render.i_chroma )
 603     {
 604         case FOURCC_YUY2:
 605         case FOURCC_YUNV:
 606             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 607             break;
 608         case FOURCC_UYVY:
 609         case FOURCC_UYNV:
 610         case FOURCC_Y422:
 611             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 612             break;
 613         case FOURCC_YVYU:
 614             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 615             break;
 616         case FOURCC_YV12:
 617         case FOURCC_I420:
 618         case FOURCC_IYUV:
 619         default:
 620             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 621             break;
 622     }
 623
 624     p_vout->p_sys->p_overlay =
 625         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 626                               p_vout->p_sys->p_display );
 627     /* FIXME: if the first overlay we find is software, don't stop,
 628      * because we may find a hardware one later ... */
 629
 630     /* If this best choice failed, fall back to other chromas */
 631     if( p_vout->p_sys->p_overlay == NULL )
 632     {
 633         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 634         p_vout->p_sys->p_overlay =
 635             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 636                                   p_vout->p_sys->p_display );
 637     }
 638
 639     if( p_vout->p_sys->p_overlay == NULL )
 640     {
 641         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 642         p_vout->p_sys->p_overlay =
 643             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 644                                   p_vout->p_sys->p_display );
 645     }
 646
 647     if( p_vout->p_sys->p_overlay == NULL )
 648     {
 649         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 650         p_vout->p_sys->p_overlay =
 651             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 652                                   p_vout->p_sys->p_display );
 653     }
 654
 655     if( p_vout->p_sys->p_overlay == NULL )
 656     {
 657         intf_WarnMsg( 3, "vout warning: no SDL overlay for 0x%.8x (%4.4s)",
 658                          p_vout->render.i_chroma,
 659                          (char*)&p_vout->render.i_chroma );
 660
 661         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 662         {
 663             case 8:
 664                 p_vout->output.i_chroma = FOURCC_RGB2;
 665                 p_vout->output.pf_setpalette = SetPalette;
 666                 break;
 667             case 15:
 668                 p_vout->output.i_chroma = FOURCC_RV15;
 669                 break;
 670             case 16:
 671                 p_vout->output.i_chroma = FOURCC_RV16;
 672                 break;
 673             case 24:
 674                 p_vout->output.i_chroma = FOURCC_RV24;
 675                 break;
 676             case 32:
 677                 p_vout->output.i_chroma = FOURCC_RV32;
 678                 break;
 679             default:
 680                 intf_ErrMsg( "vout error: unknown screen depth" );
 681                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 682                 SDL_FreeSurface( p_vout->p_sys->p_display );
 683                 return( -1 );
 684         }
 685
 686         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 687         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 688         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 689
 690         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 691                            VOUT_TITLE " (software RGB SDL output)" );
 692     }
 693     else
 694     {
 695         if( p_vout->p_sys->p_overlay->hw_overlay )
 696         {
 697             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 698                                VOUT_TITLE " (hardware YUV SDL output)" );
 699         }
 700         else
 701         {
 702             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 703                                VOUT_TITLE " (software YUV SDL output)" );
 704         }
 705     }
 706
 707     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 708
 709     return( 0 );
 710 }
 711
 712 /*****************************************************************************
 713  * CloseDisplay: close and reset SDL device
 714  *****************************************************************************
 715  * This function returns all resources allocated by OpenDisplay and restore
 716  * the original state of the device.
 717  *****************************************************************************/
 718 static void CloseDisplay( vout_thread_t *p_vout )
 719 {
 720     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 721     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 722     SDL_FreeSurface( p_vout->p_sys->p_display );
 723 }
 724
 725 /*****************************************************************************
 726  * NewPicture: allocate a picture
 727  *****************************************************************************
 728  * Returns 0 on success, -1 otherwise
 729  *****************************************************************************/
 730 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 731 {
 732     int i_width  = p_vout->output.i_width;
 733     int i_height = p_vout->output.i_height;
 734
 735     if( p_vout->p_sys->p_overlay == NULL )
 736     {
 737         /* RGB picture */
 738         if( p_vout->p_sys->i_surfaces )
 739         {
 740             /* We already allocated this surface, return */
 741             return -1;
 742         }
 743
 744         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 745
 746         if( p_pic->p_sys == NULL )
 747         {
 748             return -1;
 749         }
 750
 751         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 752         {
 753             case 8:
 754                 p_pic->p->i_pixel_bytes = 1;
 755                 break;
 756             case 15:
 757             case 16:
 758                 p_pic->p->i_pixel_bytes = 2;
 759                 break;
 760             case 24:
 761             case 32:
 762                 p_pic->p->i_pixel_bytes = 4;
 763                 break;
 764             default:
 765                 return( -1 );
 766         }
 767
 768         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 769         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 770         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 771
 772         if( p_pic->p->i_pitch ==
 773                 p_pic->p->i_pixel_bytes * p_vout->p_sys->p_display->w )
 774         {
 775             p_pic->p->b_margin = 0;
 776         }
 777         else
 778         {
 779             p_pic->p->b_margin = 1;
 780             p_pic->p->b_hidden = 1;
 781             p_pic->p->i_visible_bytes =
 782                 p_pic->p->i_pixel_bytes * p_vout->p_sys->p_display->w;
 783         }
 784
 785         p_vout->p_sys->i_surfaces++;
 786
 787         p_pic->i_planes = 1;
 788     }
 789     else
 790     {
 791         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 792
 793         if( p_pic->p_sys == NULL )
 794         {
 795             return -1;
 796         }
 797
 798         p_pic->p_sys->p_overlay =
 799             SDL_CreateYUVOverlay( i_width, i_height,
 800                                   p_vout->output.i_chroma,
 801                                   p_vout->p_sys->p_display );
 802
 803         if( p_pic->p_sys->p_overlay == NULL )
 804         {
 805             free( p_pic->p_sys );
 806             return -1;
 807         }
 808
 809         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 810
 811         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 812         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 813         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 814
 815         switch( p_vout->output.i_chroma )
 816         {
 817         case SDL_YV12_OVERLAY:
 818             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 819             p_pic->p[Y_PLANE].b_margin = 0;
 820
 821             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 822             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 823             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 824             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 825             p_pic->p[U_PLANE].b_margin = 0;
 826
 827             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 828             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 829             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 830             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 831             p_pic->p[V_PLANE].b_margin = 0;
 832
 833             p_pic->i_planes = 3;
 834             break;
 835
 836         case SDL_IYUV_OVERLAY:
 837             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 838             p_pic->p[Y_PLANE].b_margin = 0;
 839
 840             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 841             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 842             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 843             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 844             p_pic->p[U_PLANE].b_margin = 0;
 845
 846             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 847             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 848             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 849             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 850             p_pic->p[V_PLANE].b_margin = 0;
 851
 852             p_pic->i_planes = 3;
 853             break;
 854
 855         default:
 856             p_pic->p[Y_PLANE].i_pixel_bytes = 2;
 857             p_pic->p[Y_PLANE].b_margin = 0;
 858
 859             p_pic->i_planes = 1;
 860             break;
 861         }
 862     }
 863
 864     return 0;
 865 }
 866
 867 /*****************************************************************************
 868  * SetPalette: sets an 8 bpp palette
 869  *****************************************************************************/
 870 static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
 871 {
 872     SDL_Color colors[256];
 873     int i;
 874
 875     /* Fill colors with color information */
 876     for( i = 0; i < 256; i++ )
 877     {
 878         colors[ i ].r = red[ i ] >> 8;
 879         colors[ i ].g = green[ i ] >> 8;
 880         colors[ i ].b = blue[ i ] >> 8;
 881     }
 882
 883     /* Set palette */
 884     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 885     {
 886         intf_ErrMsg( "vout error: failed setting palette" );
 887     }
 888 }
 889