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