git.sesse.net Git - vlc/blob - modules/video_output/sdl.c

   1 /*****************************************************************************
   2  * sdl.c: SDL video output display method
   3  *****************************************************************************
   4  * Copyright (C) 1998-2001 VideoLAN
   5  * $Id: sdl.c,v 1.1 2002/08/13 11:59:36 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 <vlc/vlc.h>
  34 #include <vlc/intf.h>
  35 #include <vlc/vout.h>
  36
  37 #include <sys/types.h>
  38 #ifndef WIN32
  39 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  40 #endif
  41
  42 #include SDL_INCLUDE_FILE
  43
  44 #include "netutils.h"
  45
  46 #define SDL_MAX_DIRECTBUFFERS 10
  47 #define SDL_DEFAULT_BPP 16
  48
  49 /*****************************************************************************
  50  * vout_sys_t: video output SDL method descriptor
  51  *****************************************************************************
  52  * This structure is part of the video output thread descriptor.
  53  * It describes the SDL specific properties of an output thread.
  54  *****************************************************************************/
  55 struct vout_sys_t
  56 {
  57     SDL_Surface *   p_display;                             /* display device */
  58
  59     int i_width;
  60     int i_height;
  61
  62     /* For YUV output */
  63     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  64
  65     /* For RGB output */
  66     int i_surfaces;
  67
  68     vlc_bool_t  b_cursor;
  69     vlc_bool_t  b_cursor_autohidden;
  70     mtime_t     i_lastmoved;
  71     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  72 };
  73
  74 /*****************************************************************************
  75  * picture_sys_t: direct buffer method descriptor
  76  *****************************************************************************
  77  * This structure is part of the picture descriptor, it describes the
  78  * SDL specific properties of a direct buffer.
  79  *****************************************************************************/
  80 struct picture_sys_t
  81 {
  82     SDL_Overlay *p_overlay;
  83 };
  84
  85 /*****************************************************************************
  86  * Local prototypes
  87  *****************************************************************************/
  88 static int  Open      ( vlc_object_t * );
  89 static void Close     ( vlc_object_t * );
  90 static int  Init      ( vout_thread_t * );
  91 static void End       ( vout_thread_t * );
  92 static int  Manage    ( vout_thread_t * );
  93 static void Display   ( vout_thread_t *, picture_t * );
  94
  95 static int  OpenDisplay     ( vout_thread_t * );
  96 static void CloseDisplay    ( vout_thread_t * );
  97 static int  NewPicture      ( vout_thread_t *, picture_t * );
  98 static void SetPalette      ( vout_thread_t *, u16 *, u16 *, u16 * );
  99
 100 /*****************************************************************************
 101  * Module descriptor
 102  *****************************************************************************/
 103 vlc_module_begin();
 104     set_description( _("Simple DirectMedia Layer video module") );
 105     set_capability( "video output", 40 );
 106     set_callbacks( Open, Close );
 107 vlc_module_end();
 108
 109 /*****************************************************************************
 110  * OpenVideo: allocate SDL video thread output method
 111  *****************************************************************************
 112  * This function allocate and initialize a SDL vout method. It uses some of the
 113  * vout properties to choose the correct mode, and change them according to the
 114  * mode actually used.
 115  *****************************************************************************/
 116 static int Open ( vlc_object_t *p_this )
 117 {
 118     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 119
 120 #ifdef HAVE_SETENV
 121     char *psz_method;
 122 #endif
 123
 124     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 125     {
 126         return( 1 );
 127     }
 128
 129     /* Allocate structure */
 130     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 131     if( p_vout->p_sys == NULL )
 132     {
 133         msg_Err( p_vout, "out of memory" );
 134         return( 1 );
 135     }
 136
 137     p_vout->pf_init = Init;
 138     p_vout->pf_end = End;
 139     p_vout->pf_manage = Manage;
 140     p_vout->pf_render = NULL;
 141     p_vout->pf_display = Display;
 142
 143 #ifdef HAVE_SETENV
 144     psz_method = config_GetPsz( p_vout, "vout" );
 145     if( psz_method )
 146     {
 147         while( *psz_method && *psz_method != ':' )
 148         {
 149             psz_method++;
 150         }
 151
 152         if( *psz_method )
 153         {
 154             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 155         }
 156     }
 157 #endif
 158
 159     /* Initialize library */
 160     if( SDL_Init( SDL_INIT_VIDEO
 161 #ifndef WIN32
 162     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 163                 | SDL_INIT_EVENTTHREAD
 164 #endif
 165 #ifdef DEBUG
 166     /* In debug mode you may want vlc to dump a core instead of staying
 167      * stuck */
 168                 | SDL_INIT_NOPARACHUTE
 169 #endif
 170                 ) < 0 )
 171     {
 172         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 173         free( p_vout->p_sys );
 174         return( 1 );
 175     }
 176
 177     p_vout->p_sys->b_cursor = 1;
 178     p_vout->p_sys->b_cursor_autohidden = 0;
 179     p_vout->p_sys->i_lastmoved = mdate();
 180
 181     if( OpenDisplay( p_vout ) )
 182     {
 183         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 184         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 185         free( p_vout->p_sys );
 186         return( 1 );
 187     }
 188
 189     return( 0 );
 190 }
 191
 192 /*****************************************************************************
 193  * Init: initialize SDL video thread output method
 194  *****************************************************************************
 195  * This function initialize the SDL display device.
 196  *****************************************************************************/
 197 static int Init( vout_thread_t *p_vout )
 198 {
 199     int i_index;
 200     picture_t *p_pic;
 201
 202     p_vout->p_sys->i_surfaces = 0;
 203
 204     I_OUTPUTPICTURES = 0;
 205
 206     /* Initialize the output structure */
 207     if( p_vout->p_sys->p_overlay == NULL )
 208     {
 209         /* All we have is an RGB image with square pixels */
 210         p_vout->output.i_width  = p_vout->p_sys->i_width;
 211         p_vout->output.i_height = p_vout->p_sys->i_height;
 212         p_vout->output.i_aspect = p_vout->output.i_width
 213                                    * VOUT_ASPECT_FACTOR
 214                                    / p_vout->output.i_height;
 215     }
 216     else
 217     {
 218         /* We may need to convert the chroma, but at least we keep the
 219          * aspect ratio */
 220         p_vout->output.i_width  = p_vout->render.i_width;
 221         p_vout->output.i_height = p_vout->render.i_height;
 222         p_vout->output.i_aspect = p_vout->render.i_aspect;
 223     }
 224
 225     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 226     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 227     {
 228         p_pic = NULL;
 229
 230         /* Find an empty picture slot */
 231         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 232         {
 233             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 234             {
 235                 p_pic = p_vout->p_picture + i_index;
 236                 break;
 237             }
 238         }
 239
 240         /* Allocate the picture if we found one */
 241         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 242         {
 243             break;
 244         }
 245
 246         p_pic->i_status = DESTROYED_PICTURE;
 247         p_pic->i_type   = DIRECT_PICTURE;
 248
 249         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 250
 251         I_OUTPUTPICTURES++;
 252     }
 253
 254     return( 0 );
 255 }
 256
 257 /*****************************************************************************
 258  * End: terminate Sys video thread output method
 259  *****************************************************************************
 260  * Terminate an output method created by OpenVideo
 261  *****************************************************************************/
 262 static void End( vout_thread_t *p_vout )
 263 {
 264     int i_index;
 265
 266     /* Free the output buffers we allocated */
 267     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 268     {
 269         i_index--;
 270         if( p_vout->p_sys->p_overlay == NULL )
 271         {
 272             /* RGB picture */
 273         }
 274         else
 275         {
 276             SDL_UnlockYUVOverlay(
 277                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 278             SDL_FreeYUVOverlay(
 279                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 280         }
 281         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 282     }
 283 }
 284
 285 /*****************************************************************************
 286  * CloseVideo: destroy Sys video thread output method
 287  *****************************************************************************
 288  * Terminate an output method created by vout_SDLCreate
 289  *****************************************************************************/
 290 static void Close ( vlc_object_t *p_this )
 291 {
 292     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 293
 294     CloseDisplay( p_vout );
 295     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 296
 297     free( p_vout->p_sys );
 298 }
 299
 300 /*****************************************************************************
 301  * Manage: handle Sys events
 302  *****************************************************************************
 303  * This function should be called regularly by video output thread. It returns
 304  * a non null value if an error occured.
 305  *****************************************************************************/
 306 static int Manage( vout_thread_t *p_vout )
 307 {
 308     SDL_Event event;                                            /* SDL event */
 309
 310     /* Process events */
 311     while( SDL_PollEvent(&event) )
 312     {
 313         switch( event.type )
 314         {
 315         case SDL_VIDEORESIZE:                          /* Resizing of window */
 316             /* Update dimensions */
 317             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 318             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 319             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 320             break;
 321
 322         case SDL_MOUSEMOTION:
 323             if( p_vout->p_sys->b_cursor &&
 324                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 325             {
 326                 if( p_vout->p_sys->b_cursor_autohidden )
 327                 {
 328                     p_vout->p_sys->b_cursor_autohidden = 0;
 329                     SDL_ShowCursor( 1 );
 330                 }
 331                 else
 332                 {
 333                     p_vout->p_sys->i_lastmoved = mdate();
 334                 }
 335             }
 336             break;
 337
 338         case SDL_MOUSEBUTTONUP:
 339             switch( event.button.button )
 340             {
 341             case SDL_BUTTON_RIGHT:
 342                 {
 343                     intf_thread_t *p_intf;
 344                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 345                                                       FIND_ANYWHERE );
 346                     if( p_intf )
 347                     {
 348                         p_intf->b_menu_change = 1;
 349                         vlc_object_release( p_intf );
 350                     }
 351                 }
 352                 break;
 353             }
 354             break;
 355
 356         case SDL_MOUSEBUTTONDOWN:
 357             switch( event.button.button )
 358             {
 359             case SDL_BUTTON_LEFT:
 360                 /* In this part we will eventually manage
 361                  * clicks for DVD navigation for instance. */
 362
 363                 /* detect double-clicks */
 364                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 365                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 366
 367                 p_vout->p_sys->i_lastpressed = mdate();
 368                 break;
 369
 370             case 4:
 371                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 372                 break;
 373
 374             case 5:
 375                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 376                 break;
 377             }
 378             break;
 379
 380         case SDL_QUIT:
 381             p_vout->p_vlc->b_die = 1;
 382             break;
 383
 384         case SDL_KEYDOWN:                             /* if a key is pressed */
 385
 386             switch( event.key.keysym.sym )
 387             {
 388             case SDLK_ESCAPE:
 389                 if( p_vout->b_fullscreen )
 390                 {
 391                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 392                 }
 393                 else
 394                 {
 395                     p_vout->p_vlc->b_die = 1;
 396                 }
 397                 break;
 398
 399             case SDLK_q:                                             /* quit */
 400                 p_vout->p_vlc->b_die = 1;
 401                 break;
 402
 403             case SDLK_f:                             /* switch to fullscreen */
 404                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 405                 break;
 406
 407             case SDLK_c:                                 /* toggle grayscale */
 408                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 409                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 410                 break;
 411
 412             case SDLK_i:                                      /* toggle info */
 413                 p_vout->b_info = ! p_vout->b_info;
 414                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 415                 break;
 416
 417             case SDLK_s:                                   /* toggle scaling */
 418                 p_vout->b_scale = ! p_vout->b_scale;
 419                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 420                 break;
 421
 422             case SDLK_SPACE:                             /* toggle interface */
 423                 p_vout->b_interface = ! p_vout->b_interface;
 424                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 425                 break;
 426
 427             case SDLK_MENU:
 428                 {
 429                     intf_thread_t *p_intf;
 430                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 431                                                       FIND_ANYWHERE );
 432                     if( p_intf )
 433                     {
 434                         p_intf->b_menu_change = 1;
 435                         vlc_object_release( p_intf );
 436                     }
 437                 }
 438                 break;
 439
 440             case SDLK_LEFT:
 441                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 442                 break;
 443
 444             case SDLK_RIGHT:
 445                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 446                 break;
 447
 448             case SDLK_UP:
 449                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 450                 break;
 451
 452             case SDLK_DOWN:
 453                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 454                 break;
 455
 456             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 457             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 458             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 459             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 460             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 461             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 462             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 463             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 464             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 465             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 466             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 467             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 468
 469             default:
 470                 break;
 471             }
 472             break;
 473
 474         default:
 475             break;
 476         }
 477     }
 478
 479     /* Fullscreen change */
 480     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 481     {
 482         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 483
 484         p_vout->p_sys->b_cursor_autohidden = 0;
 485         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 486                         ! p_vout->p_sys->b_cursor_autohidden );
 487
 488         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 489         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 490     }
 491
 492     /*
 493      * Size change
 494      */
 495     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 496     {
 497         msg_Dbg( p_vout, "video display resized (%dx%d)",
 498                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 499
 500         CloseDisplay( p_vout );
 501         OpenDisplay( p_vout );
 502
 503         /* We don't need to signal the vout thread about the size change if
 504          * we can handle rescaling ourselves */
 505         if( p_vout->p_sys->p_overlay != NULL )
 506             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 507
 508     }
 509
 510     /* Pointer change */
 511     if( ! p_vout->p_sys->b_cursor_autohidden &&
 512         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 513     {
 514         /* Hide the mouse automatically */
 515         p_vout->p_sys->b_cursor_autohidden = 1;
 516         SDL_ShowCursor( 0 );
 517     }
 518
 519     return( 0 );
 520 }
 521
 522 /*****************************************************************************
 523  * Display: displays previously rendered output
 524  *****************************************************************************
 525  * This function sends the currently rendered image to the display.
 526  *****************************************************************************/
 527 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 528 {
 529     int x, y, w, h;
 530     SDL_Rect disp;
 531
 532     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 533                        &x, &y, &w, &h );
 534     disp.x = x;
 535     disp.y = y;
 536     disp.w = w;
 537     disp.h = h;
 538
 539     if( p_vout->p_sys->p_overlay == NULL )
 540     {
 541         /* RGB picture */
 542         SDL_Flip( p_vout->p_sys->p_display );
 543     }
 544     else
 545     {
 546         /* Overlay picture */
 547         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 548         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 549         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 550     }
 551 }
 552
 553 /* following functions are local */
 554
 555 /*****************************************************************************
 556  * OpenDisplay: open and initialize SDL device
 557  *****************************************************************************
 558  * Open and initialize display according to preferences specified in the vout
 559  * thread fields.
 560  *****************************************************************************/
 561 static int OpenDisplay( vout_thread_t *p_vout )
 562 {
 563     Uint32 i_flags;
 564     int    i_bpp;
 565
 566     /* Set main window's size */
 567     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 568                                                     p_vout->i_window_width;
 569     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 570                                                      p_vout->i_window_height;
 571
 572     /* Initialize flags and cursor */
 573     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 574     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 575
 576     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 577                              SDL_DEFAULT_BPP, i_flags );
 578     if( i_bpp == 0 )
 579     {
 580         msg_Err( p_vout, "no video mode available" );
 581         return( 1 );
 582     }
 583
 584     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 585                                                  p_vout->p_sys->i_height,
 586                                                  i_bpp, i_flags );
 587
 588     if( p_vout->p_sys->p_display == NULL )
 589     {
 590         msg_Err( p_vout, "cannot set video mode" );
 591         return( 1 );
 592     }
 593
 594     SDL_LockSurface( p_vout->p_sys->p_display );
 595
 596     /* Choose the chroma we will try first. */
 597     switch( p_vout->render.i_chroma )
 598     {
 599         case VLC_FOURCC('Y','U','Y','2'):
 600         case VLC_FOURCC('Y','U','N','V'):
 601             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 602             break;
 603         case VLC_FOURCC('U','Y','V','Y'):
 604         case VLC_FOURCC('U','Y','N','V'):
 605         case VLC_FOURCC('Y','4','2','2'):
 606             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 607             break;
 608         case VLC_FOURCC('Y','V','Y','U'):
 609             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 610             break;
 611         case VLC_FOURCC('Y','V','1','2'):
 612         case VLC_FOURCC('I','4','2','0'):
 613         case VLC_FOURCC('I','Y','U','V'):
 614         default:
 615             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 616             break;
 617     }
 618
 619     p_vout->p_sys->p_overlay =
 620         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 621                               p_vout->p_sys->p_display );
 622     /* FIXME: if the first overlay we find is software, don't stop,
 623      * because we may find a hardware one later ... */
 624
 625     /* If this best choice failed, fall back to other chromas */
 626     if( p_vout->p_sys->p_overlay == NULL )
 627     {
 628         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 629         p_vout->p_sys->p_overlay =
 630             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 631                                   p_vout->p_sys->p_display );
 632     }
 633
 634     if( p_vout->p_sys->p_overlay == NULL )
 635     {
 636         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 637         p_vout->p_sys->p_overlay =
 638             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 639                                   p_vout->p_sys->p_display );
 640     }
 641
 642     if( p_vout->p_sys->p_overlay == NULL )
 643     {
 644         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 645         p_vout->p_sys->p_overlay =
 646             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 647                                   p_vout->p_sys->p_display );
 648     }
 649
 650     if( p_vout->p_sys->p_overlay == NULL )
 651     {
 652         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 653                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 654
 655         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 656         {
 657             case 8:
 658                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 659                 p_vout->output.pf_setpalette = SetPalette;
 660                 break;
 661             case 15:
 662                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 663                 break;
 664             case 16:
 665                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 666                 break;
 667             case 24:
 668                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 669                 break;
 670             case 32:
 671                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 672                 break;
 673             default:
 674                 msg_Err( p_vout, "unknown screen depth %i",
 675                          p_vout->p_sys->p_display->format->BitsPerPixel );
 676                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 677                 SDL_FreeSurface( p_vout->p_sys->p_display );
 678                 return( -1 );
 679         }
 680
 681         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 682         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 683         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 684
 685         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 686                            VOUT_TITLE " (software RGB SDL output)" );
 687     }
 688     else
 689     {
 690         if( p_vout->p_sys->p_overlay->hw_overlay )
 691         {
 692             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 693                                VOUT_TITLE " (hardware YUV SDL output)" );
 694         }
 695         else
 696         {
 697             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 698                                VOUT_TITLE " (software YUV SDL output)" );
 699         }
 700     }
 701
 702     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 703
 704     return( 0 );
 705 }
 706
 707 /*****************************************************************************
 708  * CloseDisplay: close and reset SDL device
 709  *****************************************************************************
 710  * This function returns all resources allocated by OpenDisplay and restore
 711  * the original state of the device.
 712  *****************************************************************************/
 713 static void CloseDisplay( vout_thread_t *p_vout )
 714 {
 715     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 716     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 717     SDL_FreeSurface( p_vout->p_sys->p_display );
 718 }
 719
 720 /*****************************************************************************
 721  * NewPicture: allocate a picture
 722  *****************************************************************************
 723  * Returns 0 on success, -1 otherwise
 724  *****************************************************************************/
 725 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 726 {
 727     int i_width  = p_vout->output.i_width;
 728     int i_height = p_vout->output.i_height;
 729
 730     if( p_vout->p_sys->p_overlay == NULL )
 731     {
 732         /* RGB picture */
 733         if( p_vout->p_sys->i_surfaces )
 734         {
 735             /* We already allocated this surface, return */
 736             return -1;
 737         }
 738
 739         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 740
 741         if( p_pic->p_sys == NULL )
 742         {
 743             return -1;
 744         }
 745
 746         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 747         {
 748             case 8:
 749                 p_pic->p->i_pixel_pitch = 1;
 750                 break;
 751             case 15:
 752             case 16:
 753                 p_pic->p->i_pixel_pitch = 2;
 754                 break;
 755             case 24:
 756             case 32:
 757                 p_pic->p->i_pixel_pitch = 4;
 758                 break;
 759             default:
 760                 return( -1 );
 761         }
 762
 763         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 764         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 765         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 766         p_pic->p->i_visible_pitch =
 767             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 768
 769         p_vout->p_sys->i_surfaces++;
 770
 771         p_pic->i_planes = 1;
 772     }
 773     else
 774     {
 775         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 776
 777         if( p_pic->p_sys == NULL )
 778         {
 779             return -1;
 780         }
 781
 782         p_pic->p_sys->p_overlay =
 783             SDL_CreateYUVOverlay( i_width, i_height,
 784                                   p_vout->output.i_chroma,
 785                                   p_vout->p_sys->p_display );
 786
 787         if( p_pic->p_sys->p_overlay == NULL )
 788         {
 789             free( p_pic->p_sys );
 790             return -1;
 791         }
 792
 793         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 794
 795         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 796         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 797         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 798
 799         switch( p_vout->output.i_chroma )
 800         {
 801         case SDL_YV12_OVERLAY:
 802             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 803             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 804
 805             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 806             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 807             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 808             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 809             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 810
 811             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 812             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 813             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 814             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 815             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 816
 817             p_pic->i_planes = 3;
 818             break;
 819
 820         case SDL_IYUV_OVERLAY:
 821             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 822             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 823
 824             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 825             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 826             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 827             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 828             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 829
 830             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 831             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 832             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 833             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 834             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 835
 836             p_pic->i_planes = 3;
 837             break;
 838
 839         default:
 840             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 841             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 842
 843             p_pic->i_planes = 1;
 844             break;
 845         }
 846     }
 847
 848     return 0;
 849 }
 850
 851 /*****************************************************************************
 852  * SetPalette: sets an 8 bpp palette
 853  *****************************************************************************/
 854 static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
 855 {
 856     SDL_Color colors[256];
 857     int i;
 858
 859     /* Fill colors with color information */
 860     for( i = 0; i < 256; i++ )
 861     {
 862         colors[ i ].r = red[ i ] >> 8;
 863         colors[ i ].g = green[ i ] >> 8;
 864         colors[ i ].b = blue[ i ] >> 8;
 865     }
 866
 867     /* Set palette */
 868     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 869     {
 870         msg_Err( p_vout, "failed setting palette" );
 871     }
 872 }
 873