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 the VideoLAN team
   5  * $Id$
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include <errno.h>                                                 /* ENOMEM */
  30
  31 #ifdef HAVE_CONFIG_H
  32 # include "config.h"
  33 #endif
  34
  35 #include <vlc/vlc.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_interface.h>
  38 #include <vlc_playlist.h>
  39 #include <vlc_vout.h>
  40 #include <vlc_keys.h>
  41 //#include <vlc_aout.h>
  42
  43 #include <sys/types.h>
  44 #ifndef WIN32
  45 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  46 #endif
  47
  48 #include SDL_INCLUDE_FILE
  49
  50 /* SDL is not able to crop overlays - so use only 1 direct buffer */
  51 #define SDL_MAX_DIRECTBUFFERS 1
  52 #define SDL_DEFAULT_BPP 16
  53
  54 /*****************************************************************************
  55  * vout_sys_t: video output SDL method descriptor
  56  *****************************************************************************
  57  * This structure is part of the video output thread descriptor.
  58  * It describes the SDL specific properties of an output thread.
  59  *****************************************************************************/
  60 struct vout_sys_t
  61 {
  62     SDL_Surface *   p_display;                             /* display device */
  63
  64     int i_width;
  65     int i_height;
  66
  67 #if SDL_VERSION_ATLEAST(1,2,10)
  68     unsigned int i_desktop_width;
  69     unsigned int i_desktop_height;
  70 #endif
  71
  72     /* For YUV output */
  73     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  74
  75     /* For RGB output */
  76     int i_surfaces;
  77
  78     bool  b_cursor;
  79     bool  b_cursor_autohidden;
  80     mtime_t     i_lastmoved;
  81     mtime_t     i_mouse_hide_timeout;
  82     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  83 };
  84
  85 /*****************************************************************************
  86  * picture_sys_t: direct buffer method descriptor
  87  *****************************************************************************
  88  * This structure is part of the picture descriptor, it describes the
  89  * SDL specific properties of a direct buffer.
  90  *****************************************************************************/
  91 struct picture_sys_t
  92 {
  93     SDL_Overlay *p_overlay;
  94 };
  95
  96 /*****************************************************************************
  97  * Local prototypes
  98  *****************************************************************************/
  99 static int  Open      ( vlc_object_t * );
 100 static void Close     ( vlc_object_t * );
 101 static int  Init      ( vout_thread_t * );
 102 static void End       ( vout_thread_t * );
 103 static int  Manage    ( vout_thread_t * );
 104 static void Display   ( vout_thread_t *, picture_t * );
 105
 106 static int  OpenDisplay     ( vout_thread_t * );
 107 static void CloseDisplay    ( vout_thread_t * );
 108 static int  NewPicture      ( vout_thread_t *, picture_t * );
 109 static void SetPalette      ( vout_thread_t *,
 110                               uint16_t *, uint16_t *, uint16_t * );
 111
 112 static int ConvertKey( SDLKey );
 113
 114
 115 #define CHROMA_TEXT N_("SDL chroma format")
 116 #define CHROMA_LONGTEXT N_( \
 117     "Force the SDL renderer to use a specific chroma format instead of " \
 118     "trying to improve performances by using the most efficient one.")
 119
 120 /*****************************************************************************
 121  * Module descriptor
 122  *****************************************************************************/
 123 vlc_module_begin();
 124     set_shortname( "SDL" );
 125     set_category( CAT_VIDEO );
 126     set_subcategory( SUBCAT_VIDEO_VOUT );
 127     set_description( N_("Simple DirectMedia Layer video output") );
 128     set_capability( "video output", 60 );
 129     add_shortcut( "sdl" );
 130     add_string( "sdl-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT, true );
 131     set_callbacks( Open, Close );
 132 #if defined( __i386__ ) || defined( __x86_64__ )
 133     /* On i386, SDL is linked against svgalib */
 134     linked_with_a_crap_library_which_uses_atexit();
 135 #endif
 136 vlc_module_end();
 137
 138 /*****************************************************************************
 139  * OpenVideo: allocate SDL video thread output method
 140  *****************************************************************************
 141  * This function allocate and initialize a SDL vout method. It uses some of the
 142  * vout properties to choose the correct mode, and change them according to the
 143  * mode actually used.
 144  *****************************************************************************/
 145 static int Open ( vlc_object_t *p_this )
 146 {
 147     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 148     /* XXX: check for conflicts with the SDL audio output */
 149     vlc_mutex_t *lock = var_AcquireMutex( "sdl" );
 150
 151 #ifdef HAVE_SETENV
 152     char *psz_method;
 153 #endif
 154
 155     if( lock == NULL )
 156         return VLC_ENOMEM;
 157
 158     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 159     if( p_vout->p_sys == NULL )
 160     {
 161         vlc_mutex_unlock( lock );
 162         return VLC_ENOMEM;
 163     }
 164
 165     /* Check if SDL video module has been initialized */
 166     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 167     {
 168         vlc_mutex_unlock( lock );
 169         free( p_vout->p_sys );
 170         return VLC_EGENERIC;
 171     }
 172
 173     /* Allocate structure */
 174     p_vout->pf_init = Init;
 175     p_vout->pf_end = End;
 176     p_vout->pf_manage = Manage;
 177     p_vout->pf_render = NULL;
 178     p_vout->pf_display = Display;
 179     p_vout->pf_control = NULL;
 180
 181 #ifdef HAVE_SETENV
 182     psz_method = config_GetPsz( p_vout, "vout" );
 183     if( psz_method )
 184     {
 185         while( *psz_method && *psz_method != ':' )
 186         {
 187             psz_method++;
 188         }
 189
 190         if( *psz_method )
 191         {
 192             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 193         }
 194     }
 195 #endif
 196
 197     /* Initialize library */
 198     if( SDL_Init( SDL_INIT_VIDEO
 199 #ifndef WIN32
 200     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 201                 | SDL_INIT_EVENTTHREAD
 202 #endif
 203 #ifndef NDEBUG
 204     /* In debug mode you may want vlc to dump a core instead of staying
 205      * stuck */
 206                 | SDL_INIT_NOPARACHUTE
 207 #endif
 208                 ) < 0 )
 209     {
 210         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 211         free( p_vout->p_sys );
 212         vlc_mutex_unlock( lock );
 213         return VLC_EGENERIC;
 214     }
 215
 216     vlc_mutex_unlock( lock );
 217
 218     /* Translate keys into unicode */
 219     SDL_EnableUNICODE(1);
 220
 221     /* Get the desktop resolution */
 222 #if SDL_VERSION_ATLEAST(1,2,10)
 223     /* FIXME: SDL has a problem with virtual desktop */
 224     p_vout->p_sys->i_desktop_width = SDL_GetVideoInfo()->current_w;
 225     p_vout->p_sys->i_desktop_height = SDL_GetVideoInfo()->current_h;
 226 #endif
 227
 228     /* Create the cursor */
 229     p_vout->p_sys->b_cursor = 1;
 230     p_vout->p_sys->b_cursor_autohidden = 0;
 231     p_vout->p_sys->i_lastmoved = p_vout->p_sys->i_lastpressed = mdate();
 232     p_vout->p_sys->i_mouse_hide_timeout =
 233         var_GetInteger(p_vout, "mouse-hide-timeout") * 1000;
 234
 235     if( OpenDisplay( p_vout ) )
 236     {
 237         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 238         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 239         free( p_vout->p_sys );
 240         return VLC_EGENERIC;
 241     }
 242
 243     return VLC_SUCCESS;
 244 }
 245
 246 /*****************************************************************************
 247  * Init: initialize SDL video thread output method
 248  *****************************************************************************
 249  * This function initialize the SDL display device.
 250  *****************************************************************************/
 251 static int Init( vout_thread_t *p_vout )
 252 {
 253     int i_index;
 254     picture_t *p_pic;
 255
 256     p_vout->p_sys->i_surfaces = 0;
 257
 258     I_OUTPUTPICTURES = 0;
 259
 260     /* Initialize the output structure */
 261     if( p_vout->p_sys->p_overlay == NULL )
 262     {
 263         /* All we have is an RGB image with square pixels */
 264         p_vout->output.i_width  = p_vout->p_sys->i_width;
 265         p_vout->output.i_height = p_vout->p_sys->i_height;
 266         p_vout->output.i_aspect = p_vout->output.i_width
 267                                    * VOUT_ASPECT_FACTOR
 268                                    / p_vout->output.i_height;
 269     }
 270     else
 271     {
 272         /* We may need to convert the chroma, but at least we keep the
 273          * aspect ratio */
 274         p_vout->output.i_width  = p_vout->render.i_width;
 275         p_vout->output.i_height = p_vout->render.i_height;
 276         p_vout->output.i_aspect = p_vout->render.i_aspect;
 277     }
 278
 279     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 280     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 281     {
 282         p_pic = NULL;
 283
 284         /* Find an empty picture slot */
 285         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 286         {
 287             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 288             {
 289                 p_pic = p_vout->p_picture + i_index;
 290                 break;
 291             }
 292         }
 293
 294         /* Allocate the picture if we found one */
 295         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 296         {
 297             break;
 298         }
 299
 300         p_pic->i_status = DESTROYED_PICTURE;
 301         p_pic->i_type   = DIRECT_PICTURE;
 302
 303         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 304
 305         I_OUTPUTPICTURES++;
 306     }
 307
 308     return VLC_SUCCESS;
 309 }
 310
 311 /*****************************************************************************
 312  * End: terminate Sys video thread output method
 313  *****************************************************************************
 314  * Terminate an output method created by OpenVideo
 315  *****************************************************************************/
 316 static void End( vout_thread_t *p_vout )
 317 {
 318     int i_index;
 319
 320     /* Free the output buffers we allocated */
 321     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 322     {
 323         i_index--;
 324         if( p_vout->p_sys->p_overlay == NULL )
 325         {
 326             /* RGB picture */
 327         }
 328         else
 329         {
 330             SDL_UnlockYUVOverlay(
 331                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 332             SDL_FreeYUVOverlay(
 333                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 334         }
 335         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 336     }
 337 }
 338
 339 /*****************************************************************************
 340  * CloseVideo: destroy Sys video thread output method
 341  *****************************************************************************
 342  * Terminate an output method created by vout_SDLCreate
 343  *****************************************************************************/
 344 static void Close ( vlc_object_t *p_this )
 345 {
 346     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 347
 348     CloseDisplay( p_vout );
 349     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 350
 351     free( p_vout->p_sys );
 352 }
 353
 354 /*****************************************************************************
 355  * Manage: handle Sys events
 356  *****************************************************************************
 357  * This function should be called regularly by video output thread. It returns
 358  * a non null value if an error occurred.
 359  *****************************************************************************/
 360 static int Manage( vout_thread_t *p_vout )
 361 {
 362     SDL_Event event;                                            /* SDL event */
 363     vlc_value_t val;
 364     unsigned int i_width, i_height, i_x, i_y;
 365
 366     /* Process events */
 367     while( SDL_PollEvent( &event ) )
 368     {
 369         switch( event.type )
 370         {
 371         /* Resizing of window */
 372         case SDL_VIDEORESIZE:
 373             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 374             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 375             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 376             break;
 377
 378         /* Mouse move */
 379         case SDL_MOUSEMOTION:
 380             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 381                                p_vout->p_sys->i_height,
 382                                &i_x, &i_y, &i_width, &i_height );
 383
 384             /* Compute the x coordinate and check if the value is
 385                in [0,p_vout->fmt_in.i_visible_width] */
 386             val.i_int = ( event.motion.x - i_x ) *
 387                         p_vout->fmt_in.i_visible_width / i_width +
 388                         p_vout->fmt_in.i_x_offset;
 389
 390             if( (int)(event.motion.x - i_x) < 0 )
 391                 val.i_int = 0;
 392             else if( (unsigned int)val.i_int > p_vout->fmt_in.i_visible_width )
 393                 val.i_int = p_vout->fmt_in.i_visible_width;
 394
 395             var_Set( p_vout, "mouse-x", val );
 396
 397             /* compute the y coordinate and check if the value is
 398                in [0,p_vout->fmt_in.i_visible_height] */
 399             val.i_int = ( event.motion.y - i_y ) *
 400                         p_vout->fmt_in.i_visible_height / i_height +
 401                         p_vout->fmt_in.i_y_offset;
 402
 403             if( (int)(event.motion.y - i_y) < 0 )
 404                 val.i_int = 0;
 405             else if( (unsigned int)val.i_int > p_vout->fmt_in.i_visible_height )
 406                 val.i_int = p_vout->fmt_in.i_visible_height;
 407
 408             var_Set( p_vout, "mouse-y", val );
 409
 410             val.b_bool = true;
 411             var_Set( p_vout, "mouse-moved", val );
 412
 413             if( p_vout->p_sys->b_cursor )
 414             {
 415                 if( p_vout->p_sys->b_cursor_autohidden )
 416                 {
 417                     p_vout->p_sys->b_cursor_autohidden = 0;
 418                     SDL_ShowCursor( 1 );
 419                 }
 420                 else
 421                 {
 422                     p_vout->p_sys->i_lastmoved = mdate();
 423                 }
 424             }
 425             break;
 426
 427         /* Mouse button released */
 428         case SDL_MOUSEBUTTONUP:
 429             switch( event.button.button )
 430             {
 431             case SDL_BUTTON_LEFT:
 432                 {
 433                     playlist_t *p_playlist;
 434
 435                     var_Get( p_vout, "mouse-button-down", &val );
 436                     val.i_int &= ~1;
 437                     var_Set( p_vout, "mouse-button-down", val );
 438
 439                     val.b_bool = true;
 440                     var_Set( p_vout, "mouse-clicked", val );
 441
 442                     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 443                                                 FIND_ANYWHERE );
 444
 445                     if( p_playlist != NULL )
 446                     {
 447                         vlc_value_t val;
 448                         val.b_bool = false;
 449                         var_Set( p_playlist, "intf-popupmenu", val );
 450                         vlc_object_release( p_playlist );
 451                     }
 452                 }
 453                 break;
 454
 455             case SDL_BUTTON_MIDDLE:
 456                 {
 457                     playlist_t *p_playlist;
 458
 459                     var_Get( p_vout, "mouse-button-down", &val );
 460                     val.i_int &= ~2;
 461                     var_Set( p_vout, "mouse-button-down", val );
 462
 463                     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 464                                               FIND_ANYWHERE );
 465                     if( p_playlist != NULL )
 466                     {
 467                         vlc_value_t val;
 468                         var_Get( p_playlist, "intf-show", &val );
 469                         val.b_bool = !val.b_bool;
 470                         var_Set( p_playlist, "intf-show", val );
 471                         vlc_object_release( p_playlist );
 472                     }
 473                 }
 474                 break;
 475
 476             case SDL_BUTTON_RIGHT:
 477                 {
 478                     intf_thread_t *p_intf;
 479                     playlist_t *p_playlist;
 480
 481                     var_Get( p_vout, "mouse-button-down", &val );
 482                     val.i_int &= ~4;
 483                     var_Set( p_vout, "mous-button-down", val );
 484                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 485                                                       FIND_ANYWHERE );
 486                     if( p_intf )
 487                     {
 488                         p_intf->b_menu_change = 1;
 489                         vlc_object_release( p_intf );
 490                     }
 491
 492                     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 493                                                 FIND_ANYWHERE );
 494
 495                     if( p_playlist != NULL )
 496                     {
 497                         vlc_value_t val;
 498                         val.b_bool = true;
 499                         var_Set( p_playlist, "intf-popupmenu", val );
 500                         vlc_object_release( p_playlist );
 501                     }
 502                 }
 503                 break;
 504             }
 505             break;
 506
 507         /* Mouse button pressed */
 508         case SDL_MOUSEBUTTONDOWN:
 509             switch( event.button.button )
 510             {
 511             case SDL_BUTTON_LEFT:
 512                 var_Get( p_vout, "mouse-button-down", &val );
 513                 val.i_int |= 1;
 514                 var_Set( p_vout, "mouse-button-down", val );
 515
 516                 /* detect double-clicks */
 517                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 518                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 519
 520                 p_vout->p_sys->i_lastpressed = mdate();
 521                 break;
 522
 523             case SDL_BUTTON_MIDDLE:
 524                 var_Get( p_vout, "mouse-button-down", &val );
 525                 val.i_int |= 2;
 526                 var_Set( p_vout, "mouse-button-down", val );
 527                 break;
 528
 529             case SDL_BUTTON_RIGHT:
 530                 var_Get( p_vout, "mouse-button-down", &val );
 531                 val.i_int |= 4;
 532                 var_Set( p_vout, "mouse-button-down", val );
 533                 break;
 534             }
 535             break;
 536
 537         /* Quit event (close the window) */
 538         case SDL_QUIT:
 539             {
 540                 playlist_t *p_playlist = (playlist_t *)vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 541                 if( p_playlist != NULL )
 542                 {
 543                     playlist_Stop( p_playlist );
 544                     vlc_object_release( p_playlist );
 545                 }
 546             }
 547             break;
 548
 549         /* Key pressed */
 550         case SDL_KEYDOWN:
 551             /* convert the key if possible */
 552             val.i_int = ConvertKey( event.key.keysym.sym );
 553
 554             if( !val.i_int )
 555             {
 556                 /* Find the right caracter */
 557                 if( ( event.key.keysym.unicode & 0xff80 ) == 0 )
 558                 {
 559                     val.i_int = event.key.keysym.unicode & 0x7f;
 560                     /* FIXME: find a better solution than this
 561                               hack to find the right caracter */
 562                     if( val.i_int >= 1 && val.i_int <= 26 )
 563                         val.i_int += 96;
 564                     else if( val.i_int >= 65 && val.i_int <= 90 )
 565                         val.i_int += 32;
 566                 }
 567             }
 568
 569             if( val.i_int )
 570             {
 571                 if( ( event.key.keysym.mod & KMOD_SHIFT ) )
 572                 {
 573                     val.i_int |= KEY_MODIFIER_SHIFT;
 574                 }
 575                 if( ( event.key.keysym.mod & KMOD_CTRL ) )
 576                 {
 577                     val.i_int |= KEY_MODIFIER_CTRL;
 578                 }
 579                 if( ( event.key.keysym.mod & KMOD_ALT ) )
 580                 {
 581                     val.i_int |= KEY_MODIFIER_ALT;
 582                 }
 583                 var_Set( p_vout->p_libvlc, "key-pressed", val );
 584             }
 585
 586         default:
 587             break;
 588         }
 589     }
 590
 591     /* Fullscreen change */
 592     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 593     {
 594         vlc_value_t val_fs;
 595
 596         /* Update the object variable and trigger callback */
 597         val_fs.b_bool = !p_vout->b_fullscreen;
 598         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 599         var_Set( p_vout, "fullscreen", val_fs );
 600
 601         /*TODO: add the "always on top" code here !*/
 602
 603         p_vout->p_sys->b_cursor_autohidden = 0;
 604         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 605                         ! p_vout->p_sys->b_cursor_autohidden );
 606
 607         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 608         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 609     }
 610
 611     /* Crop or Aspect Ratio Changes */
 612     if( p_vout->i_changes & VOUT_CROP_CHANGE ||
 613         p_vout->i_changes & VOUT_ASPECT_CHANGE )
 614     {
 615         p_vout->i_changes &= ~VOUT_CROP_CHANGE;
 616         p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 617
 618         p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
 619         p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
 620         p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
 621         p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
 622         p_vout->fmt_out.i_aspect = p_vout->fmt_in.i_aspect;
 623         p_vout->fmt_out.i_sar_num = p_vout->fmt_in.i_sar_num;
 624         p_vout->fmt_out.i_sar_den = p_vout->fmt_in.i_sar_den;
 625         p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
 626
 627         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 628     }
 629
 630     /* Size change */
 631     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 632     {
 633         msg_Dbg( p_vout, "video display resized (%dx%d)",
 634                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 635
 636         CloseDisplay( p_vout );
 637         OpenDisplay( p_vout );
 638
 639         /* We don't need to signal the vout thread about the size change if
 640          * we can handle rescaling ourselves */
 641         if( p_vout->p_sys->p_overlay != NULL )
 642             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 643     }
 644
 645     /* Pointer change */
 646     if( ! p_vout->p_sys->b_cursor_autohidden &&
 647         ( mdate() - p_vout->p_sys->i_lastmoved >
 648             p_vout->p_sys->i_mouse_hide_timeout ) )
 649     {
 650         /* Hide the mouse automatically */
 651         p_vout->p_sys->b_cursor_autohidden = 1;
 652         SDL_ShowCursor( 0 );
 653     }
 654
 655     return VLC_SUCCESS;
 656 }
 657
 658 /*****************************************************************************
 659  * Key events handling
 660  *****************************************************************************/
 661 static struct
 662 {
 663     SDLKey sdl_key;
 664     int i_vlckey;
 665 } sdlkeys_to_vlckeys[] =
 666 {
 667     { SDLK_F1,  KEY_F1 },
 668     { SDLK_F2,  KEY_F2 },
 669     { SDLK_F3,  KEY_F3 },
 670     { SDLK_F4,  KEY_F4 },
 671     { SDLK_F5,  KEY_F5 },
 672     { SDLK_F6,  KEY_F6 },
 673     { SDLK_F7,  KEY_F7 },
 674     { SDLK_F8,  KEY_F8 },
 675     { SDLK_F9,  KEY_F9 },
 676     { SDLK_F10, KEY_F10 },
 677     { SDLK_F11, KEY_F11 },
 678     { SDLK_F12, KEY_F12 },
 679
 680     { SDLK_RETURN, KEY_ENTER },
 681     { SDLK_KP_ENTER, KEY_ENTER },
 682     { SDLK_SPACE, KEY_SPACE },
 683     { SDLK_ESCAPE, KEY_ESC },
 684
 685     { SDLK_MENU, KEY_MENU },
 686     { SDLK_LEFT, KEY_LEFT },
 687     { SDLK_RIGHT, KEY_RIGHT },
 688     { SDLK_UP, KEY_UP },
 689     { SDLK_DOWN, KEY_DOWN },
 690
 691     { SDLK_HOME, KEY_HOME },
 692     { SDLK_END, KEY_END },
 693     { SDLK_PAGEUP, KEY_PAGEUP },
 694     { SDLK_PAGEDOWN,  KEY_PAGEDOWN },
 695
 696     { SDLK_INSERT, KEY_INSERT },
 697     { SDLK_DELETE, KEY_DELETE },
 698     /*TODO: find a equivalent for SDL
 699     { , KEY_MEDIA_NEXT_TRACK }
 700     { , KEY_MEDIA_PREV_TRACK }
 701     { , KEY_VOLUME_MUTE }
 702     { , KEY_VOLUME_DOWN }
 703     { , KEY_VOLUME_UP }
 704     { , KEY_MEDIA_PLAY_PAUSE }
 705     { , KEY_MEDIA_PLAY_PAUSE }*/
 706
 707     { 0, 0 }
 708 };
 709
 710 static int ConvertKey( SDLKey sdl_key )
 711 {
 712     int i;
 713     for( i=0; sdlkeys_to_vlckeys[i].sdl_key != 0; i++ )
 714     {
 715         if( sdlkeys_to_vlckeys[i].sdl_key == sdl_key )
 716         {
 717             return sdlkeys_to_vlckeys[i].i_vlckey;
 718         }
 719     }
 720     return 0;
 721 }
 722
 723
 724 /*****************************************************************************
 725  * Display: displays previously rendered output
 726  *****************************************************************************
 727  * This function sends the currently rendered image to the display.
 728  *****************************************************************************/
 729 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 730 {
 731     unsigned int x, y, w, h;
 732     SDL_Rect disp;
 733
 734     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 735                        &x, &y, &w, &h );
 736     disp.x = x;
 737     disp.y = y;
 738     disp.w = w;
 739     disp.h = h;
 740
 741     if( p_vout->p_sys->p_overlay == NULL )
 742     {
 743         /* RGB picture */
 744         SDL_Flip( p_vout->p_sys->p_display );
 745     }
 746     else
 747     {
 748         /* Overlay picture */
 749         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 750         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 751         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 752     }
 753 }
 754
 755 /* following functions are local */
 756
 757 /*****************************************************************************
 758  * OpenDisplay: open and initialize SDL device
 759  *****************************************************************************
 760  * Open and initialize display according to preferences specified in the vout
 761  * thread fields.
 762  *****************************************************************************/
 763 static int OpenDisplay( vout_thread_t *p_vout )
 764 {
 765     uint32_t i_flags;
 766     int i_bpp;
 767
 768     /* SDL fucked up fourcc definitions on bigendian machines */
 769     uint32_t i_sdl_chroma;
 770     char *psz_chroma = NULL;
 771     uint32_t i_chroma = 0;
 772
 773     /* Set main window's size */
 774 #if SDL_VERSION_ATLEAST(1,2,10)
 775     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->p_sys->i_desktop_width :
 776                                                     p_vout->i_window_width;
 777     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->p_sys->i_desktop_height :
 778                                                      p_vout->i_window_height;
 779 #else
 780     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 781                                                     p_vout->i_window_width;
 782     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 783                                                      p_vout->i_window_height;
 784 #endif
 785
 786     /* Initialize flags and cursor */
 787     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 788     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 789
 790     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 791                              SDL_DEFAULT_BPP, i_flags );
 792     if( i_bpp == 0 )
 793     {
 794         msg_Err( p_vout, "no video mode available" );
 795         return VLC_EGENERIC;
 796     }
 797
 798     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 799                                                  p_vout->p_sys->i_height,
 800                                                  i_bpp, i_flags );
 801
 802     if( p_vout->p_sys->p_display == NULL )
 803     {
 804         msg_Err( p_vout, "cannot set video mode" );
 805         return VLC_EGENERIC;
 806     }
 807
 808     SDL_LockSurface( p_vout->p_sys->p_display );
 809
 810     if( ( psz_chroma = config_GetPsz( p_vout, "sdl-chroma" ) ) )
 811     {
 812         if( strlen( psz_chroma ) >= 4 )
 813         {
 814             memcpy(&i_chroma, psz_chroma, 4);
 815             msg_Dbg( p_vout, "Forcing chroma to 0x%.8x (%4.4s)", i_chroma, (char*)&i_chroma );
 816         }
 817         else
 818         {
 819             free( psz_chroma );
 820             psz_chroma = NULL;
 821         }
 822     }
 823
 824     /* Choose the chroma we will try first. */
 825     do
 826     {
 827         if( !psz_chroma ) i_chroma = 0;
 828         switch( i_chroma ? i_chroma : p_vout->render.i_chroma )
 829         {
 830             case VLC_FOURCC('Y','U','Y','2'):
 831             case VLC_FOURCC('Y','U','N','V'):
 832                 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 833                 i_sdl_chroma = SDL_YUY2_OVERLAY;
 834                 break;
 835             case VLC_FOURCC('U','Y','V','Y'):
 836             case VLC_FOURCC('U','Y','N','V'):
 837             case VLC_FOURCC('Y','4','2','2'):
 838                 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 839                 i_sdl_chroma = SDL_UYVY_OVERLAY;
 840                 break;
 841             case VLC_FOURCC('Y','V','Y','U'):
 842                 p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 843                 i_sdl_chroma = SDL_YVYU_OVERLAY;
 844                 break;
 845             case VLC_FOURCC('Y','V','1','2'):
 846             case VLC_FOURCC('I','4','2','0'):
 847             case VLC_FOURCC('I','Y','U','V'):
 848             default:
 849                 p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 850                 i_sdl_chroma = SDL_YV12_OVERLAY;
 851                 break;
 852         }
 853         free( psz_chroma ); psz_chroma = NULL;
 854
 855         p_vout->p_sys->p_overlay =
 856             SDL_CreateYUVOverlay( 32, 32, i_sdl_chroma,
 857                                   p_vout->p_sys->p_display );
 858         /* FIXME: if the first overlay we find is software, don't stop,
 859          * because we may find a hardware one later ... */
 860     }
 861     while( i_chroma && !p_vout->p_sys->p_overlay );
 862
 863
 864     /* If this best choice failed, fall back to other chromas */
 865     if( p_vout->p_sys->p_overlay == NULL )
 866     {
 867         p_vout->output.i_chroma = VLC_FOURCC('I','Y','U','V');
 868         p_vout->p_sys->p_overlay =
 869             SDL_CreateYUVOverlay( 32, 32, SDL_IYUV_OVERLAY,
 870                                   p_vout->p_sys->p_display );
 871     }
 872
 873     if( p_vout->p_sys->p_overlay == NULL )
 874     {
 875         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 876         p_vout->p_sys->p_overlay =
 877             SDL_CreateYUVOverlay( 32, 32, SDL_YV12_OVERLAY,
 878                                   p_vout->p_sys->p_display );
 879     }
 880
 881     if( p_vout->p_sys->p_overlay == NULL )
 882     {
 883         p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 884         p_vout->p_sys->p_overlay =
 885             SDL_CreateYUVOverlay( 32, 32, SDL_YUY2_OVERLAY,
 886                                   p_vout->p_sys->p_display );
 887     }
 888
 889     if( p_vout->p_sys->p_overlay == NULL )
 890     {
 891         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 892                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 893
 894         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 895         {
 896             case 8:
 897                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 898                 p_vout->output.pf_setpalette = SetPalette;
 899                 break;
 900             case 15:
 901                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 902                 break;
 903             case 16:
 904                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 905                 break;
 906             case 24:
 907                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 908                 break;
 909             case 32:
 910                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 911                 break;
 912             default:
 913                 msg_Err( p_vout, "unknown screen depth %i",
 914                          p_vout->p_sys->p_display->format->BitsPerPixel );
 915                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 916                 SDL_FreeSurface( p_vout->p_sys->p_display );
 917                 return VLC_EGENERIC;
 918         }
 919
 920         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 921         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 922         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 923
 924         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 925                            VOUT_TITLE " (software RGB SDL output)" );
 926     }
 927     else
 928     {
 929         if( p_vout->p_sys->p_overlay->hw_overlay )
 930         {
 931             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 932                                VOUT_TITLE " (hardware YUV SDL output)" );
 933         }
 934         else
 935         {
 936             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 937                                VOUT_TITLE " (software YUV SDL output)" );
 938         }
 939     }
 940
 941     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 942
 943     return VLC_SUCCESS;
 944 }
 945
 946 /*****************************************************************************
 947  * CloseDisplay: close and reset SDL device
 948  *****************************************************************************
 949  * This function returns all resources allocated by OpenDisplay and restore
 950  * the original state of the device.
 951  *****************************************************************************/
 952 static void CloseDisplay( vout_thread_t *p_vout )
 953 {
 954     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 955     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 956     SDL_FreeSurface( p_vout->p_sys->p_display );
 957 }
 958
 959 /*****************************************************************************
 960  * NewPicture: allocate a picture
 961  *****************************************************************************
 962  * Returns 0 on success, -1 otherwise
 963  *****************************************************************************/
 964 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 965 {
 966     int i_width  = p_vout->output.i_width;
 967     int i_height = p_vout->output.i_height;
 968
 969     if( p_vout->p_sys->p_overlay == NULL )
 970     {
 971         /* RGB picture */
 972         if( p_vout->p_sys->i_surfaces )
 973         {
 974             /* We already allocated this surface, return */
 975             return VLC_EGENERIC;
 976         }
 977
 978         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 979
 980         if( p_pic->p_sys == NULL )
 981         {
 982             return VLC_ENOMEM;
 983         }
 984
 985         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 986         {
 987             case 8:
 988                 p_pic->p->i_pixel_pitch = 1;
 989                 break;
 990             case 15:
 991             case 16:
 992                 p_pic->p->i_pixel_pitch = 2;
 993                 break;
 994             case 24:
 995             case 32:
 996                 p_pic->p->i_pixel_pitch = 4;
 997                 break;
 998             default:
 999                 return VLC_EGENERIC;
1000         }
1001
1002         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
1003         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
1004         p_pic->p->i_visible_lines = p_vout->p_sys->p_display->h;
1005         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
1006         p_pic->p->i_visible_pitch =
1007             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
1008
1009         p_vout->p_sys->i_surfaces++;
1010
1011         p_pic->i_planes = 1;
1012     }
1013     else
1014     {
1015         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
1016
1017         if( p_pic->p_sys == NULL )
1018         {
1019             return VLC_ENOMEM;
1020         }
1021
1022         p_pic->p_sys->p_overlay =
1023             SDL_CreateYUVOverlay( i_width, i_height,
1024                                   p_vout->output.i_chroma,
1025                                   p_vout->p_sys->p_display );
1026
1027         if( p_pic->p_sys->p_overlay == NULL )
1028         {
1029             free( p_pic->p_sys );
1030             return VLC_EGENERIC;
1031         }
1032
1033         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
1034
1035         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
1036         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
1037         p_pic->p[Y_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h;
1038         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
1039
1040         switch( p_vout->output.i_chroma )
1041         {
1042         case SDL_YV12_OVERLAY:
1043             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1044             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
1045
1046             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
1047             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
1048             p_pic->p[U_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
1049             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
1050             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1051             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
1052
1053             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
1054             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
1055             p_pic->p[V_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
1056             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
1057             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1058             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
1059
1060             p_pic->i_planes = 3;
1061             break;
1062
1063         case SDL_IYUV_OVERLAY:
1064             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
1065             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
1066
1067             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
1068             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
1069             p_pic->p[U_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
1070             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
1071             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1072             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
1073
1074             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
1075             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
1076             p_pic->p[V_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
1077             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
1078             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1079             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
1080
1081             p_pic->i_planes = 3;
1082             break;
1083
1084         default:
1085             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
1086             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w * 2;
1087
1088             p_pic->i_planes = 1;
1089             break;
1090         }
1091     }
1092
1093     return VLC_SUCCESS;
1094 }
1095
1096 /*****************************************************************************
1097  * SetPalette: sets an 8 bpp palette
1098  *****************************************************************************/
1099 static void SetPalette( vout_thread_t *p_vout,
1100                         uint16_t *red, uint16_t *green, uint16_t *blue )
1101 {
1102     SDL_Color colors[256];
1103     int i;
1104
1105     /* Fill colors with color information */
1106     for( i = 0; i < 256; i++ )
1107     {
1108         colors[ i ].r = red[ i ] >> 8;
1109         colors[ i ].g = green[ i ] >> 8;
1110         colors[ i ].b = blue[ i ] >> 8;
1111     }
1112
1113     /* Set palette */
1114     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
1115     {
1116         msg_Err( p_vout, "failed to set palette" );
1117     }
1118 }
1119