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 1.3 2002/09/30 11:05:40 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     add_shortcut( "sdl" );
 107     set_callbacks( Open, Close );
 108 vlc_module_end();
 109
 110 /*****************************************************************************
 111  * OpenVideo: allocate SDL video thread output method
 112  *****************************************************************************
 113  * This function allocate and initialize a SDL vout method. It uses some of the
 114  * vout properties to choose the correct mode, and change them according to the
 115  * mode actually used.
 116  *****************************************************************************/
 117 static int Open ( vlc_object_t *p_this )
 118 {
 119     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 120
 121 #ifdef HAVE_SETENV
 122     char *psz_method;
 123 #endif
 124
 125     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 126     {
 127         return( 1 );
 128     }
 129
 130     /* Allocate structure */
 131     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 132     if( p_vout->p_sys == NULL )
 133     {
 134         msg_Err( p_vout, "out of memory" );
 135         return( 1 );
 136     }
 137
 138     p_vout->pf_init = Init;
 139     p_vout->pf_end = End;
 140     p_vout->pf_manage = Manage;
 141     p_vout->pf_render = NULL;
 142     p_vout->pf_display = Display;
 143
 144 #ifdef HAVE_SETENV
 145     psz_method = config_GetPsz( p_vout, "vout" );
 146     if( psz_method )
 147     {
 148         while( *psz_method && *psz_method != ':' )
 149         {
 150             psz_method++;
 151         }
 152
 153         if( *psz_method )
 154         {
 155             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 156         }
 157     }
 158 #endif
 159
 160     /* Initialize library */
 161     if( SDL_Init( SDL_INIT_VIDEO
 162 #ifndef WIN32
 163     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 164                 | SDL_INIT_EVENTTHREAD
 165 #endif
 166 #ifdef DEBUG
 167     /* In debug mode you may want vlc to dump a core instead of staying
 168      * stuck */
 169                 | SDL_INIT_NOPARACHUTE
 170 #endif
 171                 ) < 0 )
 172     {
 173         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 174         free( p_vout->p_sys );
 175         return( 1 );
 176     }
 177
 178     p_vout->p_sys->b_cursor = 1;
 179     p_vout->p_sys->b_cursor_autohidden = 0;
 180     p_vout->p_sys->i_lastmoved = mdate();
 181
 182     if( OpenDisplay( p_vout ) )
 183     {
 184         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 185         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 186         free( p_vout->p_sys );
 187         return( 1 );
 188     }
 189
 190     return( 0 );
 191 }
 192
 193 /*****************************************************************************
 194  * Init: initialize SDL video thread output method
 195  *****************************************************************************
 196  * This function initialize the SDL display device.
 197  *****************************************************************************/
 198 static int Init( vout_thread_t *p_vout )
 199 {
 200     int i_index;
 201     picture_t *p_pic;
 202
 203     p_vout->p_sys->i_surfaces = 0;
 204
 205     I_OUTPUTPICTURES = 0;
 206
 207     /* Initialize the output structure */
 208     if( p_vout->p_sys->p_overlay == NULL )
 209     {
 210         /* All we have is an RGB image with square pixels */
 211         p_vout->output.i_width  = p_vout->p_sys->i_width;
 212         p_vout->output.i_height = p_vout->p_sys->i_height;
 213         p_vout->output.i_aspect = p_vout->output.i_width
 214                                    * VOUT_ASPECT_FACTOR
 215                                    / p_vout->output.i_height;
 216     }
 217     else
 218     {
 219         /* We may need to convert the chroma, but at least we keep the
 220          * aspect ratio */
 221         p_vout->output.i_width  = p_vout->render.i_width;
 222         p_vout->output.i_height = p_vout->render.i_height;
 223         p_vout->output.i_aspect = p_vout->render.i_aspect;
 224     }
 225
 226     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 227     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 228     {
 229         p_pic = NULL;
 230
 231         /* Find an empty picture slot */
 232         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 233         {
 234             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 235             {
 236                 p_pic = p_vout->p_picture + i_index;
 237                 break;
 238             }
 239         }
 240
 241         /* Allocate the picture if we found one */
 242         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 243         {
 244             break;
 245         }
 246
 247         p_pic->i_status = DESTROYED_PICTURE;
 248         p_pic->i_type   = DIRECT_PICTURE;
 249
 250         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 251
 252         I_OUTPUTPICTURES++;
 253     }
 254
 255     return( 0 );
 256 }
 257
 258 /*****************************************************************************
 259  * End: terminate Sys video thread output method
 260  *****************************************************************************
 261  * Terminate an output method created by OpenVideo
 262  *****************************************************************************/
 263 static void End( vout_thread_t *p_vout )
 264 {
 265     int i_index;
 266
 267     /* Free the output buffers we allocated */
 268     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 269     {
 270         i_index--;
 271         if( p_vout->p_sys->p_overlay == NULL )
 272         {
 273             /* RGB picture */
 274         }
 275         else
 276         {
 277             SDL_UnlockYUVOverlay(
 278                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 279             SDL_FreeYUVOverlay(
 280                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 281         }
 282         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 283     }
 284 }
 285
 286 /*****************************************************************************
 287  * CloseVideo: destroy Sys video thread output method
 288  *****************************************************************************
 289  * Terminate an output method created by vout_SDLCreate
 290  *****************************************************************************/
 291 static void Close ( vlc_object_t *p_this )
 292 {
 293     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 294
 295     CloseDisplay( p_vout );
 296     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 297
 298     free( p_vout->p_sys );
 299 }
 300
 301 /*****************************************************************************
 302  * Manage: handle Sys events
 303  *****************************************************************************
 304  * This function should be called regularly by video output thread. It returns
 305  * a non null value if an error occured.
 306  *****************************************************************************/
 307 static int Manage( vout_thread_t *p_vout )
 308 {
 309     SDL_Event event;                                            /* SDL event */
 310
 311     /* Process events */
 312     while( SDL_PollEvent(&event) )
 313     {
 314         switch( event.type )
 315         {
 316         case SDL_VIDEORESIZE:                          /* Resizing of window */
 317             /* Update dimensions */
 318             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 319             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 320             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 321             break;
 322
 323         case SDL_MOUSEMOTION:
 324             if( p_vout->p_sys->b_cursor &&
 325                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 326             {
 327                 if( p_vout->p_sys->b_cursor_autohidden )
 328                 {
 329                     p_vout->p_sys->b_cursor_autohidden = 0;
 330                     SDL_ShowCursor( 1 );
 331                 }
 332                 else
 333                 {
 334                     p_vout->p_sys->i_lastmoved = mdate();
 335                 }
 336             }
 337             break;
 338
 339         case SDL_MOUSEBUTTONUP:
 340             switch( event.button.button )
 341             {
 342             case SDL_BUTTON_RIGHT:
 343                 {
 344                     intf_thread_t *p_intf;
 345                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 346                                                       FIND_ANYWHERE );
 347                     if( p_intf )
 348                     {
 349                         p_intf->b_menu_change = 1;
 350                         vlc_object_release( p_intf );
 351                     }
 352                 }
 353                 break;
 354             }
 355             break;
 356
 357         case SDL_MOUSEBUTTONDOWN:
 358             switch( event.button.button )
 359             {
 360             case SDL_BUTTON_LEFT:
 361                 /* In this part we will eventually manage
 362                  * clicks for DVD navigation for instance. */
 363
 364                 /* detect double-clicks */
 365                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 366                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 367
 368                 p_vout->p_sys->i_lastpressed = mdate();
 369                 break;
 370
 371             case 4:
 372                 input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 373                 break;
 374
 375             case 5:
 376                 input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 377                 break;
 378             }
 379             break;
 380
 381         case SDL_QUIT:
 382             p_vout->p_vlc->b_die = 1;
 383             break;
 384
 385         case SDL_KEYDOWN:                             /* if a key is pressed */
 386
 387             switch( event.key.keysym.sym )
 388             {
 389             case SDLK_ESCAPE:
 390                 if( p_vout->b_fullscreen )
 391                 {
 392                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 393                 }
 394                 else
 395                 {
 396                     p_vout->p_vlc->b_die = 1;
 397                 }
 398                 break;
 399
 400             case SDLK_q:                                             /* quit */
 401                 p_vout->p_vlc->b_die = 1;
 402                 break;
 403
 404             case SDLK_f:                             /* switch to fullscreen */
 405                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 406                 break;
 407
 408             case SDLK_c:                                 /* toggle grayscale */
 409                 p_vout->b_grayscale = ! p_vout->b_grayscale;
 410                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
 411                 break;
 412
 413             case SDLK_i:                                      /* toggle info */
 414                 p_vout->b_info = ! p_vout->b_info;
 415                 p_vout->i_changes |= VOUT_INFO_CHANGE;
 416                 break;
 417
 418             case SDLK_s:                                   /* toggle scaling */
 419                 p_vout->b_scale = ! p_vout->b_scale;
 420                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
 421                 break;
 422
 423             case SDLK_SPACE:                             /* toggle interface */
 424                 p_vout->b_interface = ! p_vout->b_interface;
 425                 p_vout->i_changes |= VOUT_INTF_CHANGE;
 426                 break;
 427
 428             case SDLK_MENU:
 429                 {
 430                     intf_thread_t *p_intf;
 431                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 432                                                       FIND_ANYWHERE );
 433                     if( p_intf != NULL )
 434                     {
 435                         p_intf->b_menu_change = 1;
 436                         vlc_object_release( p_intf );
 437                     }
 438                 }
 439                 break;
 440
 441             case SDLK_LEFT:
 442                 input_Seek( p_vout, -5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 443                 break;
 444
 445             case SDLK_RIGHT:
 446                 input_Seek( p_vout, 5, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 447                 break;
 448
 449             case SDLK_UP:
 450                 input_Seek( p_vout, 60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 451                 break;
 452
 453             case SDLK_DOWN:
 454                 input_Seek( p_vout, -60, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 455                 break;
 456
 457             case SDLK_F1: network_ChannelJoin( p_vout, 1 ); break;
 458             case SDLK_F2: network_ChannelJoin( p_vout, 2 ); break;
 459             case SDLK_F3: network_ChannelJoin( p_vout, 3 ); break;
 460             case SDLK_F4: network_ChannelJoin( p_vout, 4 ); break;
 461             case SDLK_F5: network_ChannelJoin( p_vout, 5 ); break;
 462             case SDLK_F6: network_ChannelJoin( p_vout, 6 ); break;
 463             case SDLK_F7: network_ChannelJoin( p_vout, 7 ); break;
 464             case SDLK_F8: network_ChannelJoin( p_vout, 8 ); break;
 465             case SDLK_F9: network_ChannelJoin( p_vout, 9 ); break;
 466             case SDLK_F10: network_ChannelJoin( p_vout, 10 ); break;
 467             case SDLK_F11: network_ChannelJoin( p_vout, 11 ); break;
 468             case SDLK_F12: network_ChannelJoin( p_vout, 12 ); break;
 469
 470             case SDLK_b:
 471                 {
 472                     aout_instance_t * p_aout;
 473                     audio_volume_t i_volume;
 474                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 475                                                       FIND_ANYWHERE );
 476                     if( p_aout != NULL )
 477                     {
 478                         if ( !aout_VolumeDown( p_aout, 1, &i_volume ) )
 479                         {
 480                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 481                         }
 482                         else
 483                         {
 484                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 485                         }
 486                         vlc_object_release( (vlc_object_t *)p_aout );
 487                     }
 488                 }
 489                 break;
 490
 491             case SDLK_n:
 492                 {
 493                     aout_instance_t * p_aout;
 494                     audio_volume_t i_volume;
 495                     p_aout = vlc_object_find( p_vout, VLC_OBJECT_AOUT,
 496                                                       FIND_ANYWHERE );
 497                     if( p_aout != NULL )
 498                     {
 499                         if ( !aout_VolumeUp( p_aout, 1, &i_volume ) )
 500                         {
 501                             msg_Dbg( p_vout, "audio volume is now %d", i_volume );
 502                         }
 503                         else
 504                         {
 505                             msg_Dbg( p_vout, "audio volume: operation not supported" );
 506                         }
 507                         vlc_object_release( (vlc_object_t *)p_aout );
 508                     }
 509                 }
 510                 break;
 511
 512              default:
 513                 break;
 514             }
 515             break;
 516
 517         default:
 518             break;
 519         }
 520     }
 521
 522     /* Fullscreen change */
 523     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 524     {
 525         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 526
 527         p_vout->p_sys->b_cursor_autohidden = 0;
 528         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 529                         ! p_vout->p_sys->b_cursor_autohidden );
 530
 531         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 532         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 533     }
 534
 535     /*
 536      * Size change
 537      */
 538     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 539     {
 540         msg_Dbg( p_vout, "video display resized (%dx%d)",
 541                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 542
 543         CloseDisplay( p_vout );
 544         OpenDisplay( p_vout );
 545
 546         /* We don't need to signal the vout thread about the size change if
 547          * we can handle rescaling ourselves */
 548         if( p_vout->p_sys->p_overlay != NULL )
 549             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 550
 551     }
 552
 553     /* Pointer change */
 554     if( ! p_vout->p_sys->b_cursor_autohidden &&
 555         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 556     {
 557         /* Hide the mouse automatically */
 558         p_vout->p_sys->b_cursor_autohidden = 1;
 559         SDL_ShowCursor( 0 );
 560     }
 561
 562     return( 0 );
 563 }
 564
 565 /*****************************************************************************
 566  * Display: displays previously rendered output
 567  *****************************************************************************
 568  * This function sends the currently rendered image to the display.
 569  *****************************************************************************/
 570 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 571 {
 572     int x, y, w, h;
 573     SDL_Rect disp;
 574
 575     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 576                        &x, &y, &w, &h );
 577     disp.x = x;
 578     disp.y = y;
 579     disp.w = w;
 580     disp.h = h;
 581
 582     if( p_vout->p_sys->p_overlay == NULL )
 583     {
 584         /* RGB picture */
 585         SDL_Flip( p_vout->p_sys->p_display );
 586     }
 587     else
 588     {
 589         /* Overlay picture */
 590         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 591         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 592         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 593     }
 594 }
 595
 596 /* following functions are local */
 597
 598 /*****************************************************************************
 599  * OpenDisplay: open and initialize SDL device
 600  *****************************************************************************
 601  * Open and initialize display according to preferences specified in the vout
 602  * thread fields.
 603  *****************************************************************************/
 604 static int OpenDisplay( vout_thread_t *p_vout )
 605 {
 606     Uint32 i_flags;
 607     int    i_bpp;
 608
 609     /* Set main window's size */
 610     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 611                                                     p_vout->i_window_width;
 612     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 613                                                      p_vout->i_window_height;
 614
 615     /* Initialize flags and cursor */
 616     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 617     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 618
 619     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 620                              SDL_DEFAULT_BPP, i_flags );
 621     if( i_bpp == 0 )
 622     {
 623         msg_Err( p_vout, "no video mode available" );
 624         return( 1 );
 625     }
 626
 627     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 628                                                  p_vout->p_sys->i_height,
 629                                                  i_bpp, i_flags );
 630
 631     if( p_vout->p_sys->p_display == NULL )
 632     {
 633         msg_Err( p_vout, "cannot set video mode" );
 634         return( 1 );
 635     }
 636
 637     SDL_LockSurface( p_vout->p_sys->p_display );
 638
 639     /* Choose the chroma we will try first. */
 640     switch( p_vout->render.i_chroma )
 641     {
 642         case VLC_FOURCC('Y','U','Y','2'):
 643         case VLC_FOURCC('Y','U','N','V'):
 644             p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 645             break;
 646         case VLC_FOURCC('U','Y','V','Y'):
 647         case VLC_FOURCC('U','Y','N','V'):
 648         case VLC_FOURCC('Y','4','2','2'):
 649             p_vout->output.i_chroma = SDL_UYVY_OVERLAY;
 650             break;
 651         case VLC_FOURCC('Y','V','Y','U'):
 652             p_vout->output.i_chroma = SDL_YVYU_OVERLAY;
 653             break;
 654         case VLC_FOURCC('Y','V','1','2'):
 655         case VLC_FOURCC('I','4','2','0'):
 656         case VLC_FOURCC('I','Y','U','V'):
 657         default:
 658             p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 659             break;
 660     }
 661
 662     p_vout->p_sys->p_overlay =
 663         SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 664                               p_vout->p_sys->p_display );
 665     /* FIXME: if the first overlay we find is software, don't stop,
 666      * because we may find a hardware one later ... */
 667
 668     /* If this best choice failed, fall back to other chromas */
 669     if( p_vout->p_sys->p_overlay == NULL )
 670     {
 671         p_vout->output.i_chroma = SDL_IYUV_OVERLAY;
 672         p_vout->p_sys->p_overlay =
 673             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 674                                   p_vout->p_sys->p_display );
 675     }
 676
 677     if( p_vout->p_sys->p_overlay == NULL )
 678     {
 679         p_vout->output.i_chroma = SDL_YV12_OVERLAY;
 680         p_vout->p_sys->p_overlay =
 681             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 682                                   p_vout->p_sys->p_display );
 683     }
 684
 685     if( p_vout->p_sys->p_overlay == NULL )
 686     {
 687         p_vout->output.i_chroma = SDL_YUY2_OVERLAY;
 688         p_vout->p_sys->p_overlay =
 689             SDL_CreateYUVOverlay( 32, 32, p_vout->output.i_chroma,
 690                                   p_vout->p_sys->p_display );
 691     }
 692
 693     if( p_vout->p_sys->p_overlay == NULL )
 694     {
 695         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 696                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 697
 698         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 699         {
 700             case 8:
 701                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 702                 p_vout->output.pf_setpalette = SetPalette;
 703                 break;
 704             case 15:
 705                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 706                 break;
 707             case 16:
 708                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 709                 break;
 710             case 24:
 711                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 712                 break;
 713             case 32:
 714                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 715                 break;
 716             default:
 717                 msg_Err( p_vout, "unknown screen depth %i",
 718                          p_vout->p_sys->p_display->format->BitsPerPixel );
 719                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 720                 SDL_FreeSurface( p_vout->p_sys->p_display );
 721                 return( -1 );
 722         }
 723
 724         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 725         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 726         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 727
 728         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 729                            VOUT_TITLE " (software RGB SDL output)" );
 730     }
 731     else
 732     {
 733         if( p_vout->p_sys->p_overlay->hw_overlay )
 734         {
 735             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 736                                VOUT_TITLE " (hardware YUV SDL output)" );
 737         }
 738         else
 739         {
 740             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 741                                VOUT_TITLE " (software YUV SDL output)" );
 742         }
 743     }
 744
 745     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 746
 747     return( 0 );
 748 }
 749
 750 /*****************************************************************************
 751  * CloseDisplay: close and reset SDL device
 752  *****************************************************************************
 753  * This function returns all resources allocated by OpenDisplay and restore
 754  * the original state of the device.
 755  *****************************************************************************/
 756 static void CloseDisplay( vout_thread_t *p_vout )
 757 {
 758     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 759     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 760     SDL_FreeSurface( p_vout->p_sys->p_display );
 761 }
 762
 763 /*****************************************************************************
 764  * NewPicture: allocate a picture
 765  *****************************************************************************
 766  * Returns 0 on success, -1 otherwise
 767  *****************************************************************************/
 768 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 769 {
 770     int i_width  = p_vout->output.i_width;
 771     int i_height = p_vout->output.i_height;
 772
 773     if( p_vout->p_sys->p_overlay == NULL )
 774     {
 775         /* RGB picture */
 776         if( p_vout->p_sys->i_surfaces )
 777         {
 778             /* We already allocated this surface, return */
 779             return -1;
 780         }
 781
 782         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 783
 784         if( p_pic->p_sys == NULL )
 785         {
 786             return -1;
 787         }
 788
 789         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 790         {
 791             case 8:
 792                 p_pic->p->i_pixel_pitch = 1;
 793                 break;
 794             case 15:
 795             case 16:
 796                 p_pic->p->i_pixel_pitch = 2;
 797                 break;
 798             case 24:
 799             case 32:
 800                 p_pic->p->i_pixel_pitch = 4;
 801                 break;
 802             default:
 803                 return( -1 );
 804         }
 805
 806         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 807         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 808         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 809         p_pic->p->i_visible_pitch =
 810             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 811
 812         p_vout->p_sys->i_surfaces++;
 813
 814         p_pic->i_planes = 1;
 815     }
 816     else
 817     {
 818         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 819
 820         if( p_pic->p_sys == NULL )
 821         {
 822             return -1;
 823         }
 824
 825         p_pic->p_sys->p_overlay =
 826             SDL_CreateYUVOverlay( i_width, i_height,
 827                                   p_vout->output.i_chroma,
 828                                   p_vout->p_sys->p_display );
 829
 830         if( p_pic->p_sys->p_overlay == NULL )
 831         {
 832             free( p_pic->p_sys );
 833             return -1;
 834         }
 835
 836         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 837
 838         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 839         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 840         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 841
 842         switch( p_vout->output.i_chroma )
 843         {
 844         case SDL_YV12_OVERLAY:
 845             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 846             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 847
 848             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 849             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 850             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 851             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 852             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 853
 854             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 855             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 856             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 857             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 858             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 859
 860             p_pic->i_planes = 3;
 861             break;
 862
 863         case SDL_IYUV_OVERLAY:
 864             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 865             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 866
 867             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 868             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 869             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 870             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 871             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p[U_PLANE].i_pitch;
 872
 873             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 874             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 875             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 876             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 877             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p[V_PLANE].i_pitch;
 878
 879             p_pic->i_planes = 3;
 880             break;
 881
 882         default:
 883             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
 884             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p[Y_PLANE].i_pitch;
 885
 886             p_pic->i_planes = 1;
 887             break;
 888         }
 889     }
 890
 891     return 0;
 892 }
 893
 894 /*****************************************************************************
 895  * SetPalette: sets an 8 bpp palette
 896  *****************************************************************************/
 897 static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
 898 {
 899     SDL_Color colors[256];
 900     int i;
 901
 902     /* Fill colors with color information */
 903     for( i = 0; i < 256; i++ )
 904     {
 905         colors[ i ].r = red[ i ] >> 8;
 906         colors[ i ].g = green[ i ] >> 8;
 907         colors[ i ].b = blue[ i ] >> 8;
 908     }
 909
 910     /* Set palette */
 911     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
 912     {
 913         msg_Err( p_vout, "failed setting palette" );
 914     }
 915 }
 916