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 1.81 2002/02/15 13:32:53 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     int i_red_mask;
  74     int i_green_mask;
  75     int i_blue_mask;
  76
  77     boolean_t   b_cursor;
  78     boolean_t   b_cursor_autohidden;
  79     mtime_t     i_lastmoved;
  80
  81 } vout_sys_t;
  82
  83 /*****************************************************************************
  84  * picture_sys_t: direct buffer method descriptor
  85  *****************************************************************************
  86  * This structure is part of the picture descriptor, it describes the
  87  * SDL specific properties of a direct buffer.
  88  *****************************************************************************/
  89 typedef struct picture_sys_s
  90 {
  91     SDL_Overlay *p_overlay;
  92
  93 } picture_sys_t;
  94
  95 /*****************************************************************************
  96  * Seeking function TODO: put this in a generic location !
  97  *****************************************************************************/
  98 static __inline__ void vout_Seek( off_t i_seek )
  99 {
 100     off_t i_tell;
 101
 102     vlc_mutex_lock( &p_input_bank->lock );
 103     if( p_input_bank->pp_input[0] != NULL )
 104     {
 105 #define S p_input_bank->pp_input[0]->stream
 106         i_tell = S.p_selected_area->i_tell + i_seek * (off_t)50 * S.i_mux_rate;
 107
 108         i_tell = ( i_tell <= 0 /*S.p_selected_area->i_start*/ )
 109                    ? 0 /*S.p_selected_area->i_start*/
 110                    : ( i_tell >= S.p_selected_area->i_size )
 111                        ? S.p_selected_area->i_size
 112                        : i_tell;
 113
 114         input_Seek( p_input_bank->pp_input[0], i_tell );
 115 #undef S
 116     }
 117     vlc_mutex_unlock( &p_input_bank->lock );
 118 }
 119
 120 /*****************************************************************************
 121  * Local prototypes.
 122  *****************************************************************************/
 123 static int  vout_Create     ( struct vout_thread_s * );
 124 static int  vout_Init       ( struct vout_thread_s * );
 125 static void vout_End        ( struct vout_thread_s * );
 126 static void vout_Destroy    ( struct vout_thread_s * );
 127 static int  vout_Manage     ( struct vout_thread_s * );
 128 static void vout_Render     ( struct vout_thread_s *, struct picture_s * );
 129 static void vout_Display    ( struct vout_thread_s *, struct picture_s * );
 130
 131 static int  SDLOpenDisplay      ( vout_thread_t *p_vout );
 132 static void SDLCloseDisplay     ( vout_thread_t *p_vout );
 133 static int  SDLNewPicture       ( vout_thread_t *p_vout, picture_t *p_pic );
 134
 135 /*****************************************************************************
 136  * Functions exported as capabilities. They are declared as static so that
 137  * we don't pollute the namespace too much.
 138  *****************************************************************************/
 139 void _M( vout_getfunctions )( function_list_t * p_function_list )
 140 {
 141     p_function_list->functions.vout.pf_create     = vout_Create;
 142     p_function_list->functions.vout.pf_init       = vout_Init;
 143     p_function_list->functions.vout.pf_end        = vout_End;
 144     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 145     p_function_list->functions.vout.pf_manage     = vout_Manage;
 146     p_function_list->functions.vout.pf_render     = vout_Render;
 147     p_function_list->functions.vout.pf_display    = vout_Display;
 148 }
 149
 150 /*****************************************************************************
 151  * vout_Create: allocate SDL video thread output method
 152  *****************************************************************************
 153  * This function allocate and initialize a SDL vout method. It uses some of the
 154  * vout properties to choose the correct mode, and change them according to the
 155  * mode actually used.
 156  *****************************************************************************/
 157 static int vout_Create( vout_thread_t *p_vout )
 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     /* Initialize library */
 173     if( SDL_Init( SDL_INIT_VIDEO
 174 #ifndef WIN32
 175     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 176                 | SDL_INIT_EVENTTHREAD
 177 #endif
 178 #ifdef DEBUG
 179     /* In debug mode you may want vlc to dump a core instead of staying
 180      * stuck */
 181                 | SDL_INIT_NOPARACHUTE
 182 #endif
 183                 ) < 0 )
 184     {
 185         intf_ErrMsg( "vout error: can't initialize SDL (%s)", SDL_GetError() );
 186         free( p_vout->p_sys );
 187         return( 1 );
 188     }
 189
 190     p_vout->p_sys->b_cursor = 1;
 191     p_vout->p_sys->b_cursor_autohidden = 0;
 192     p_vout->p_sys->i_lastmoved = mdate();
 193
 194     if( p_vout->render.i_height * p_vout->render.i_aspect
 195          >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
 196     {
 197         p_vout->p_sys->i_width = p_vout->render.i_height
 198             * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 199         p_vout->p_sys->i_height = p_vout->render.i_height;
 200     }
 201     else
 202     {
 203         p_vout->p_sys->i_width = p_vout->render.i_width;
 204         p_vout->p_sys->i_height = p_vout->render.i_width
 205             * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 206     }
 207
 208 #if 0
 209     if( p_vout->p_sys->i_width <= 300 && p_vout->p_sys->i_height <= 300 )
 210     {
 211         p_vout->p_sys->i_width <<= 1;
 212         p_vout->p_sys->i_height <<= 1;
 213     }
 214     else if( p_vout->p_sys->i_width <= 400 && p_vout->p_sys->i_height <= 400 )
 215     {
 216         p_vout->p_sys->i_width += p_vout->p_sys->i_width >> 1;
 217         p_vout->p_sys->i_height += p_vout->p_sys->i_height >> 1;
 218     }
 219 #endif
 220
 221     if( SDLOpenDisplay( p_vout ) )
 222     {
 223         intf_ErrMsg( "vout error: can't set up SDL (%s)", SDL_GetError() );
 224         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 225         free( p_vout->p_sys );
 226         return( 1 );
 227     }
 228
 229     return( 0 );
 230 }
 231
 232 /*****************************************************************************
 233  * vout_Init: initialize SDL video thread output method
 234  *****************************************************************************
 235  * This function initialize the SDL display device.
 236  *****************************************************************************/
 237 static int vout_Init( vout_thread_t *p_vout )
 238 {
 239     int i_index;
 240     picture_t *p_pic;
 241
 242     p_vout->p_sys->i_surfaces = 0;
 243
 244     I_OUTPUTPICTURES = 0;
 245
 246     /* Initialize the output structure */
 247     if( p_vout->p_sys->p_overlay == NULL )
 248     {
 249         /* All we have is an RGB image with square pixels */
 250         p_vout->output.i_width  = p_vout->p_sys->i_width;
 251         p_vout->output.i_height = p_vout->p_sys->i_height;
 252         p_vout->output.i_aspect = p_vout->p_sys->i_width
 253                                    * VOUT_ASPECT_FACTOR
 254                                    / p_vout->p_sys->i_height;
 255     }
 256     else
 257     {
 258         /* We may need to convert the chroma, but at least we keep the
 259          * aspect ratio */
 260         p_vout->output.i_width  = p_vout->render.i_width;
 261         p_vout->output.i_height = p_vout->render.i_height;
 262         p_vout->output.i_aspect = p_vout->render.i_aspect;
 263     }
 264
 265     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 266     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 267     {
 268         p_pic = NULL;
 269
 270         /* Find an empty picture slot */
 271         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 272         {
 273             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 274             {
 275                 p_pic = p_vout->p_picture + i_index;
 276                 break;
 277             }
 278         }
 279
 280         /* Allocate the picture if we found one */
 281         if( p_pic == NULL || SDLNewPicture( p_vout, p_pic ) )
 282         {
 283             break;
 284         }
 285
 286         p_pic->i_status = DESTROYED_PICTURE;
 287         p_pic->i_type   = DIRECT_PICTURE;
 288
 289         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 290
 291         I_OUTPUTPICTURES++;
 292     }
 293
 294     return( 0 );
 295 }
 296
 297 /*****************************************************************************
 298  * vout_End: terminate Sys video thread output method
 299  *****************************************************************************
 300  * Terminate an output method created by vout_SDLCreate
 301  *****************************************************************************/
 302 static void vout_End( vout_thread_t *p_vout )
 303 {
 304     int i_index;
 305
 306     /* Free the output buffers we allocated */
 307     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 308     {
 309         i_index--;
 310         if( p_vout->p_sys->p_overlay == NULL )
 311         {
 312             /* RGB picture */
 313         }
 314         else
 315         {
 316             SDL_UnlockYUVOverlay(
 317                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 318             SDL_FreeYUVOverlay(
 319                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 320         }
 321         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 322     }
 323 }
 324
 325 /*****************************************************************************
 326  * vout_Destroy: destroy Sys video thread output method
 327  *****************************************************************************
 328  * Terminate an output method created by vout_SDLCreate
 329  *****************************************************************************/
 330 static void vout_Destroy( vout_thread_t *p_vout )
 331 {
 332     SDLCloseDisplay( p_vout );
 333
 334     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 335
 336     free( p_vout->p_sys );
 337 }
 338
 339 /*****************************************************************************
 340  * vout_Manage: handle Sys events
 341  *****************************************************************************
 342  * This function should be called regularly by video output thread. It returns
 343  * a non null value if an error occured.
 344  *****************************************************************************/
 345 static int vout_Manage( vout_thread_t *p_vout )
 346 {
 347     SDL_Event event;                                            /* SDL event */
 348
 349     /* Process events */
 350     while( SDL_PollEvent(&event) )
 351     {
 352         switch( event.type )
 353         {
 354         case SDL_VIDEORESIZE:                          /* Resizing of window */
 355             p_vout->p_sys->i_width = event.resize.w;
 356             p_vout->p_sys->i_height = event.resize.h;
 357             SDLCloseDisplay( p_vout );
 358             SDLOpenDisplay( p_vout );
 359             break;
 360
 361         case SDL_MOUSEMOTION:
 362             if( p_vout->p_sys->b_cursor &&
 363                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 364             {
 365                 if( p_vout->p_sys->b_cursor_autohidden )
 366                 {
 367                     p_vout->p_sys->b_cursor_autohidden = 0;
 368                     SDL_ShowCursor( 1 );
 369                 }
 370                 else
 371                 {
 372                     p_vout->p_sys->i_lastmoved = mdate();
 373                 }
 374             }
 375             break;
 376
 377         case SDL_MOUSEBUTTONUP:
 378             switch( event.button.button )
 379             {
 380             case SDL_BUTTON_RIGHT:
 381                 p_main->p_intf->b_menu_change = 1;
 382                 break;
 383             }
 384             break;
 385
 386         case SDL_MOUSEBUTTONDOWN:
 387             switch( event.button.button )
 388             {
 389             case SDL_BUTTON_LEFT:
 390                 /* In this part we will eventually manage
 391                  * clicks for DVD navigation for instance. For the
 392                  * moment just pause the stream. */
 393                 input_SetStatus( p_input_bank->pp_input[0],
 394                                  INPUT_STATUS_PAUSE );
 395                 break;
 396
 397             case 4:
 398                 vout_Seek( 15 );
 399                 break;
 400
 401             case 5:
 402                 vout_Seek( -15 );
 403                 break;
 404             }
 405             break;
 406
 407         case SDL_QUIT:
 408             p_main->p_intf->b_die = 1;
 409             break;
 410
 411         case SDL_KEYDOWN:                             /* if a key is pressed */
 412
 413             switch( event.key.keysym.sym )
 414             {
 415             case SDLK_q:                                             /* quit */
 416             case SDLK_ESCAPE:
 417                 p_main->p_intf->b_die = 1;
 418                 break;
 419
 420             case SDLK_f:                             /* switch to fullscreen */
 421                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 422                 break;
 423
 424             case SDLK_c:                                 /* toggle grayscale */
 425                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 426                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 427                 break;
 428
 429             case SDLK_i:                                      /* toggle info */
 430                 p_vout->b_info = ! p_vout->b_info;
 431                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 432                 break;
 433
 434             case SDLK_s:                                   /* toggle scaling */
 435                 p_vout->b_scale = ! p_vout->b_scale;
 436                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 437                 break;
 438
 439             case SDLK_SPACE:                             /* toggle interface */
 440                 p_vout->b_interface = ! p_vout->b_interface;
 441                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 442                 break;
 443
 444             case SDLK_MENU:
 445                 p_main->p_intf->b_menu_change = 1;
 446                 break;
 447
 448             case SDLK_LEFT:
 449                 vout_Seek( -5 );
 450                 break;
 451
 452             case SDLK_RIGHT:
 453                 vout_Seek( 5 );
 454                 break;
 455
 456             case SDLK_UP:
 457                 vout_Seek( 60 );
 458                 break;
 459
 460             case SDLK_DOWN:
 461                 vout_Seek( -60 );
 462                 break;
 463
 464             case SDLK_F10: network_ChannelJoin( 0 ); break;
 465             case SDLK_F1:  network_ChannelJoin( 1 ); break;
 466             case SDLK_F2:  network_ChannelJoin( 2 ); break;
 467             case SDLK_F3:  network_ChannelJoin( 3 ); break;
 468             case SDLK_F4:  network_ChannelJoin( 4 ); break;
 469             case SDLK_F5:  network_ChannelJoin( 5 ); break;
 470             case SDLK_F6:  network_ChannelJoin( 6 ); break;
 471             case SDLK_F7:  network_ChannelJoin( 7 ); break;
 472             case SDLK_F8:  network_ChannelJoin( 8 ); break;
 473             case SDLK_F9:  network_ChannelJoin( 9 ); break;
 474
 475             default:
 476                 intf_DbgMsg( "unhandled key %i", event.key.keysym.sym );
 477                 break;
 478             }
 479             break;
 480
 481         default:
 482             break;
 483         }
 484     }
 485
 486     /* Fullscreen change */
 487     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 488     {
 489         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 490
 491         SDL_WM_ToggleFullScreen(p_vout->p_sys->p_display);
 492
 493         p_vout->p_sys->b_cursor_autohidden = 0;
 494         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 495                         ! p_vout->p_sys->b_cursor_autohidden );
 496
 497         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 498     }
 499
 500     /* Pointer change */
 501     if( ! p_vout->p_sys->b_cursor_autohidden &&
 502         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 503     {
 504         /* Hide the mouse automatically */
 505         p_vout->p_sys->b_cursor_autohidden = 1;
 506         SDL_ShowCursor( 0 );
 507     }
 508
 509     return( 0 );
 510 }
 511
 512 /*****************************************************************************
 513  * vout_Render: render previously calculated output
 514  *****************************************************************************/
 515 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 516 {
 517     ;
 518 }
 519
 520 /*****************************************************************************
 521  * vout_Display: displays previously rendered output
 522  *****************************************************************************
 523  * This function sends the currently rendered image to the display.
 524  *****************************************************************************/
 525 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 526 {
 527     int x, y, w, h;
 528     SDL_Rect disp;
 529
 530     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 531                        &x, &y, &w, &h );
 532     disp.x = x;
 533     disp.y = y;
 534     disp.w = w;
 535     disp.h = h;
 536
 537     if( p_vout->p_sys->p_overlay == NULL )
 538     {
 539         /* RGB picture */
 540         SDL_Flip( p_vout->p_sys->p_display );
 541     }
 542     else
 543     {
 544         /* Overlay picture */
 545         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 546         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 547         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 548     }
 549 }
 550
 551 /* following functions are local */
 552
 553 /*****************************************************************************
 554  * SDLOpenDisplay: open and initialize SDL device
 555  *****************************************************************************
 556  * Open and initialize display according to preferences specified in the vout
 557  * thread fields.
 558  *****************************************************************************/
 559 static int SDLOpenDisplay( vout_thread_t *p_vout )
 560 {
 561     Uint32 i_flags;
 562     int    i_bpp;
 563
 564     /* Initialize flags and cursor */
 565     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 566     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 567
 568     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 569                              SDL_DEFAULT_BPP, i_flags );
 570     if( i_bpp == 0 )
 571     {
 572         intf_ErrMsg( "vout error: no video mode available" );
 573         return( 1 );
 574     }
 575
 576     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 577                                                  p_vout->p_sys->i_height,
 578                                                  i_bpp, i_flags );
 579
 580     if( p_vout->p_sys->p_display == NULL )
 581     {
 582         intf_ErrMsg( "vout error: cannot set video mode" );
 583         return( 1 );
 584     }
 585
 586     SDL_LockSurface( p_vout->p_sys->p_display );
 587
 588     /* Choose the chroma we will try first. */
 589     switch( p_vout->render.i_chroma )
 590     {
 591         case FOURCC_YUY2:
 592         case FOURCC_YUNV:
 593             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 594             break;
 595         case FOURCC_UYVY:
 596         case FOURCC_UYNV:
 597         case FOURCC_Y422:
 598             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 599             break;
 600         case FOURCC_YVYU:
 601             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 602             break;
 603         case FOURCC_YV12:
 604         case FOURCC_I420:
 605         case FOURCC_IYUV:
 606         default:
 607             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 608             break;
 609     }
 610
 611     p_vout->p_sys->p_overlay =
 612         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 613                               p_vout->p_sys->p_display );
 614
 615     /* FIXME: if the first overlay we find is software, don't stop,
 616      * because we may find a hardware one later ... */
 617
 618     /* If this best choice failed, fall back to other chromas */
 619     if( p_vout->p_sys->p_overlay == NULL )
 620     {
 621         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 622         p_vout->p_sys->p_overlay =
 623             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 624                                   p_vout->p_sys->p_display );
 625     }
 626
 627     if( p_vout->p_sys->p_overlay == NULL )
 628     {
 629         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 630         p_vout->p_sys->p_overlay =
 631             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 632                                   p_vout->p_sys->p_display );
 633     }
 634
 635     if( p_vout->p_sys->p_overlay == NULL )
 636     {
 637         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 638         p_vout->p_sys->p_overlay =
 639             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 640                                   p_vout->p_sys->p_display );
 641     }
 642
 643     if( p_vout->p_sys->p_overlay == NULL )
 644     {
 645         intf_WarnMsg( 3, "vout warning: no SDL overlay for 0x%.8x (%4.4s)",
 646                          p_vout->render.i_chroma,
 647                          (char*)&p_vout->render.i_chroma );
 648
 649         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 650         {
 651             case 8:
 652                 p_vout->output.i_chroma = FOURCC_BI_RGB;
 653                 break;
 654             case 15:
 655                 p_vout->output.i_chroma = FOURCC_RV15;
 656                 break;
 657             case 16:
 658                 p_vout->output.i_chroma = FOURCC_RV16;
 659                 break;
 660             case 24:
 661                 p_vout->output.i_chroma = FOURCC_BI_BITFIELDS;
 662                 break;
 663             case 32:
 664                 p_vout->output.i_chroma = FOURCC_BI_BITFIELDS;
 665                 break;
 666             default:
 667                 intf_ErrMsg( "vout error: unknown screen depth" );
 668                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 669                 SDL_FreeSurface( p_vout->p_sys->p_display );
 670                 return( -1 );
 671         }
 672
 673         p_vout->p_sys->i_red_mask = p_vout->p_sys->p_display->format->Rmask;
 674         p_vout->p_sys->i_green_mask = p_vout->p_sys->p_display->format->Gmask;
 675         p_vout->p_sys->i_blue_mask = p_vout->p_sys->p_display->format->Bmask;
 676
 677         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 678                            VOUT_TITLE " (software RGB SDL output)" );
 679     }
 680     else
 681     {
 682         if( p_vout->p_sys->p_overlay->hw_overlay )
 683         {
 684             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 685                                VOUT_TITLE " (hardware YUV SDL output)" );
 686         }
 687         else
 688         {
 689             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 690                                VOUT_TITLE " (software YUV SDL output)" );
 691         }
 692     }
 693
 694     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 695
 696     return( 0 );
 697 }
 698
 699 /*****************************************************************************
 700  * SDLCloseDisplay: close and reset SDL device
 701  *****************************************************************************
 702  * This function returns all resources allocated by SDLOpenDisplay and restore
 703  * the original state of the device.
 704  *****************************************************************************/
 705 static void SDLCloseDisplay( vout_thread_t *p_vout )
 706 {
 707     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 708     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 709     SDL_FreeSurface( p_vout->p_sys->p_display );
 710 }
 711
 712 /*****************************************************************************
 713  * SDLNewPicture: allocate a picture
 714  *****************************************************************************
 715  * Returns 0 on success, -1 otherwise
 716  *****************************************************************************/
 717 static int SDLNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 718 {
 719     int i_width  = p_vout->output.i_width;
 720     int i_height = p_vout->output.i_height;
 721
 722     if( p_vout->p_sys->p_overlay == NULL )
 723     {
 724         /* RGB picture */
 725         if( p_vout->p_sys->i_surfaces )
 726         {
 727             /* We already allocated this surface, return */
 728             return -1;
 729         }
 730
 731         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 732
 733         if( p_pic->p_sys == NULL )
 734         {
 735             return -1;
 736         }
 737
 738         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 739         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 740         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 741         p_pic->p->i_pixel_bytes = 2;
 742
 743         if( p_pic->p->i_pitch == 2 * p_vout->p_sys->p_display->w )
 744         {
 745             p_pic->p->b_margin = 0;
 746         }
 747         else
 748         {
 749             p_pic->p->b_margin = 1;
 750             p_pic->p->b_hidden = 1;
 751             p_pic->p->i_visible_bytes = 2 * p_vout->p_sys->p_display->w;
 752         }
 753
 754         p_pic->p->i_red_mask = p_vout->p_sys->p_display->format->Rmask;
 755         p_pic->p->i_green_mask = p_vout->p_sys->p_display->format->Gmask;
 756         p_pic->p->i_blue_mask = p_vout->p_sys->p_display->format->Bmask;
 757
 758         p_vout->p_sys->i_surfaces++;
 759
 760         p_pic->i_planes = 1;
 761     }
 762     else
 763     {
 764         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 765
 766         if( p_pic->p_sys == NULL )
 767         {
 768             return -1;
 769         }
 770
 771         p_pic->p_sys->p_overlay =
 772             SDL_CreateYUVOverlay( i_width, i_height,
 773                                   p_vout->output.i_chroma,
 774                                   p_vout->p_sys->p_display );
 775
 776         if( p_pic->p_sys->p_overlay == NULL )
 777         {
 778             free( p_pic->p_sys );
 779             return -1;
 780         }
 781
 782         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 783
 784         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 785         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 786         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 787
 788         switch( p_vout->output.i_chroma )
 789         {
 790         case SDL_YV12_OVERLAY:
 791             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 792             p_pic->p[Y_PLANE].b_margin = 0;
 793
 794             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 795             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 796             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 797             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 798             p_pic->p[U_PLANE].b_margin = 0;
 799
 800             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 801             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 802             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 803             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 804             p_pic->p[V_PLANE].b_margin = 0;
 805
 806             p_pic->i_planes = 3;
 807             break;
 808
 809         case SDL_IYUV_OVERLAY:
 810             p_pic->p[Y_PLANE].i_pixel_bytes = 1;
 811             p_pic->p[Y_PLANE].b_margin = 0;
 812
 813             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 814             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 815             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 816             p_pic->p[U_PLANE].i_pixel_bytes = 1;
 817             p_pic->p[U_PLANE].b_margin = 0;
 818
 819             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 820             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 821             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 822             p_pic->p[V_PLANE].i_pixel_bytes = 1;
 823             p_pic->p[V_PLANE].b_margin = 0;
 824
 825             p_pic->i_planes = 3;
 826             break;
 827
 828         default:
 829             p_pic->p[Y_PLANE].i_pixel_bytes = 2;
 830             p_pic->p[Y_PLANE].b_margin = 0;
 831
 832             p_pic->i_planes = 1;
 833             break;
 834         }
 835     }
 836
 837     return 0;
 838 }
 839