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 #include <vlc/vlc.h>
  32 #include <vlc_interface.h>
  33 #include <vlc_playlist.h>
  34 #include <vlc_vout.h>
  35 #include <vlc_keys.h>
  36 //#include <vlc_aout.h>
  37
  38 #include <sys/types.h>
  39 #ifndef WIN32
  40 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  41 #endif
  42
  43 #include SDL_INCLUDE_FILE
  44
  45 /* SDL is not able to crop overlays - so use only 1 direct buffer */
  46 #define SDL_MAX_DIRECTBUFFERS 1
  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 *,
  99                               uint16_t *, uint16_t *, uint16_t * );
 100
 101 static int ConvertKey( SDLKey );
 102
 103
 104 #define CHROMA_TEXT N_("SDL chroma format")
 105 #define CHROMA_LONGTEXT N_( \
 106     "Force the SDL renderer to use a specific chroma format instead of " \
 107     "trying to improve performances by using the most efficient one.")
 108
 109 /*****************************************************************************
 110  * Module descriptor
 111  *****************************************************************************/
 112 vlc_module_begin();
 113     set_shortname( "SDL" );
 114     set_category( CAT_VIDEO );
 115     set_subcategory( SUBCAT_VIDEO_VOUT );
 116     set_description( _("Simple DirectMedia Layer video output") );
 117     set_capability( "video output", 60 );
 118     add_shortcut( "sdl" );
 119     add_string( "sdl-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT, VLC_TRUE );
 120     set_callbacks( Open, Close );
 121 #if defined( __i386__ ) || defined( __x86_64__ )
 122     /* On i386, SDL is linked against svgalib */
 123     linked_with_a_crap_library_which_uses_atexit();
 124 #endif
 125 vlc_module_end();
 126
 127 /*****************************************************************************
 128  * OpenVideo: allocate SDL video thread output method
 129  *****************************************************************************
 130  * This function allocate and initialize a SDL vout method. It uses some of the
 131  * vout properties to choose the correct mode, and change them according to the
 132  * mode actually used.
 133  *****************************************************************************/
 134 static int Open ( vlc_object_t *p_this )
 135 {
 136     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 137     /* XXX: check for conflicts with the SDL audio output */
 138     vlc_mutex_t *lock = var_AcquireMutex( "sdl" );
 139
 140 #ifdef HAVE_SETENV
 141     char *psz_method;
 142 #endif
 143
 144     if( lock == NULL )
 145         return VLC_ENOMEM;
 146
 147     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 148     if( p_vout->p_sys == NULL )
 149     {
 150         vlc_mutex_unlock( lock );
 151         return VLC_ENOMEM;
 152     }
 153
 154     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
 155     {
 156         vlc_mutex_unlock( lock );
 157         free( p_vout->p_sys );
 158         return VLC_EGENERIC;
 159     }
 160
 161     /* Allocate structure */
 162
 163     p_vout->pf_init = Init;
 164     p_vout->pf_end = End;
 165     p_vout->pf_manage = Manage;
 166     p_vout->pf_render = NULL;
 167     p_vout->pf_display = Display;
 168
 169 #ifdef HAVE_SETENV
 170     psz_method = config_GetPsz( p_vout, "vout" );
 171     if( psz_method )
 172     {
 173         while( *psz_method && *psz_method != ':' )
 174         {
 175             psz_method++;
 176         }
 177
 178         if( *psz_method )
 179         {
 180             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
 181         }
 182     }
 183 #endif
 184
 185     /* Initialize library */
 186     if( SDL_Init( SDL_INIT_VIDEO
 187 #ifndef WIN32
 188     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
 189                 | SDL_INIT_EVENTTHREAD
 190 #endif
 191 #ifdef DEBUG
 192     /* In debug mode you may want vlc to dump a core instead of staying
 193      * stuck */
 194                 | SDL_INIT_NOPARACHUTE
 195 #endif
 196                 ) < 0 )
 197     {
 198         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
 199         free( p_vout->p_sys );
 200         vlc_mutex_unlock( lock );
 201         return VLC_EGENERIC;
 202     }
 203
 204     /* Translate keys into unicode */
 205     SDL_EnableUNICODE(1);
 206
 207     vlc_mutex_unlock( lock );
 208
 209     p_vout->p_sys->b_cursor = 1;
 210     p_vout->p_sys->b_cursor_autohidden = 0;
 211     p_vout->p_sys->i_lastmoved = mdate();
 212
 213     if( OpenDisplay( p_vout ) )
 214     {
 215         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
 216         SDL_QuitSubSystem( SDL_INIT_VIDEO );
 217         free( p_vout->p_sys );
 218         return VLC_EGENERIC;
 219     }
 220
 221     return VLC_SUCCESS;
 222 }
 223
 224 /*****************************************************************************
 225  * Init: initialize SDL video thread output method
 226  *****************************************************************************
 227  * This function initialize the SDL display device.
 228  *****************************************************************************/
 229 static int Init( vout_thread_t *p_vout )
 230 {
 231     int i_index;
 232     picture_t *p_pic;
 233
 234     p_vout->p_sys->i_surfaces = 0;
 235
 236     I_OUTPUTPICTURES = 0;
 237
 238     /* Initialize the output structure */
 239     if( p_vout->p_sys->p_overlay == NULL )
 240     {
 241         /* All we have is an RGB image with square pixels */
 242         p_vout->output.i_width  = p_vout->p_sys->i_width;
 243         p_vout->output.i_height = p_vout->p_sys->i_height;
 244         p_vout->output.i_aspect = p_vout->output.i_width
 245                                    * VOUT_ASPECT_FACTOR
 246                                    / p_vout->output.i_height;
 247     }
 248     else
 249     {
 250         /* We may need to convert the chroma, but at least we keep the
 251          * aspect ratio */
 252         p_vout->output.i_width  = p_vout->render.i_width;
 253         p_vout->output.i_height = p_vout->render.i_height;
 254         p_vout->output.i_aspect = p_vout->render.i_aspect;
 255     }
 256
 257     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
 258     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
 259     {
 260         p_pic = NULL;
 261
 262         /* Find an empty picture slot */
 263         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 264         {
 265             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 266             {
 267                 p_pic = p_vout->p_picture + i_index;
 268                 break;
 269             }
 270         }
 271
 272         /* Allocate the picture if we found one */
 273         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 274         {
 275             break;
 276         }
 277
 278         p_pic->i_status = DESTROYED_PICTURE;
 279         p_pic->i_type   = DIRECT_PICTURE;
 280
 281         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 282
 283         I_OUTPUTPICTURES++;
 284     }
 285
 286     return VLC_SUCCESS;
 287 }
 288
 289 /*****************************************************************************
 290  * End: terminate Sys video thread output method
 291  *****************************************************************************
 292  * Terminate an output method created by OpenVideo
 293  *****************************************************************************/
 294 static void End( vout_thread_t *p_vout )
 295 {
 296     int i_index;
 297
 298     /* Free the output buffers we allocated */
 299     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 300     {
 301         i_index--;
 302         if( p_vout->p_sys->p_overlay == NULL )
 303         {
 304             /* RGB picture */
 305         }
 306         else
 307         {
 308             SDL_UnlockYUVOverlay(
 309                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 310             SDL_FreeYUVOverlay(
 311                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
 312         }
 313         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
 314     }
 315 }
 316
 317 /*****************************************************************************
 318  * CloseVideo: destroy Sys video thread output method
 319  *****************************************************************************
 320  * Terminate an output method created by vout_SDLCreate
 321  *****************************************************************************/
 322 static void Close ( vlc_object_t *p_this )
 323 {
 324     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 325
 326     CloseDisplay( p_vout );
 327     SDL_QuitSubSystem( SDL_INIT_VIDEO );
 328
 329     free( p_vout->p_sys );
 330 }
 331
 332 /*****************************************************************************
 333  * Manage: handle Sys events
 334  *****************************************************************************
 335  * This function should be called regularly by video output thread. It returns
 336  * a non null value if an error occurred.
 337  *****************************************************************************/
 338 static int Manage( vout_thread_t *p_vout )
 339 {
 340     SDL_Event event;                                            /* SDL event */
 341     vlc_value_t val;
 342     unsigned int i_width, i_height, i_x, i_y;
 343
 344     /* Process events */
 345     while( SDL_PollEvent( &event ) )
 346     {
 347         switch( event.type )
 348         {
 349         case SDL_VIDEORESIZE:                          /* Resizing of window */
 350             /* Update dimensions */
 351             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 352             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
 353             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
 354             break;
 355
 356         /* Mouse move */
 357         case SDL_MOUSEMOTION:
 358             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 359                                p_vout->p_sys->i_height,
 360                                &i_x, &i_y, &i_width, &i_height );
 361
 362             val.i_int = ( event.motion.x - i_x )
 363                          * p_vout->render.i_width / i_width;
 364             var_Set( p_vout, "mouse-x", val );
 365             val.i_int = ( event.motion.y - i_y )
 366                          * p_vout->render.i_height / i_height;
 367             var_Set( p_vout, "mouse-y", val );
 368
 369             val.b_bool = VLC_TRUE;
 370             var_Set( p_vout, "mouse-moved", val );
 371
 372             if( p_vout->p_sys->b_cursor &&
 373                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
 374             {
 375                 if( p_vout->p_sys->b_cursor_autohidden )
 376                 {
 377                     p_vout->p_sys->b_cursor_autohidden = 0;
 378                     SDL_ShowCursor( 1 );
 379                 }
 380                 else
 381                 {
 382                     p_vout->p_sys->i_lastmoved = mdate();
 383                 }
 384             }
 385             break;
 386
 387         /* Mouse button released */
 388         case SDL_MOUSEBUTTONUP:
 389             switch( event.button.button )
 390             {
 391             case SDL_BUTTON_LEFT:
 392                 var_Get( p_vout, "mouse-button-down", &val );
 393                 val.i_int &= ~1;
 394                 var_Set( p_vout, "mouse-button-down", val );
 395
 396                 val.b_bool = VLC_TRUE;
 397                 var_Set( p_vout, "mouse-clicked", val );
 398                 break;
 399
 400             case SDL_BUTTON_MIDDLE:
 401                 {
 402                     playlist_t *p_playlist;
 403
 404                     var_Get( p_vout, "mouse-button-down", &val );
 405                     val.i_int &= ~2;
 406                     var_Set( p_vout, "mouse-button-down", val );
 407
 408                     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 409                                               FIND_ANYWHERE );
 410                     if( p_playlist != NULL )
 411                     {
 412                         vlc_value_t val;
 413                         var_Get( p_playlist, "intf-show", &val );
 414                         val.b_bool = !val.b_bool;
 415                         var_Set( p_playlist, "intf-show", val );
 416                         vlc_object_release( p_playlist );
 417                     }
 418                 }
 419                 break;
 420
 421             case SDL_BUTTON_RIGHT:
 422                 {
 423                     intf_thread_t *p_intf;
 424                     playlist_t *p_playlist;
 425
 426                     var_Get( p_vout, "mouse-button-down", &val );
 427                     val.i_int &= ~4;
 428                     var_Set( p_vout, "mous-button-down", val );
 429                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
 430                                                       FIND_ANYWHERE );
 431                     if( p_intf )
 432                     {
 433                         p_intf->b_menu_change = 1;
 434                         vlc_object_release( p_intf );
 435                     }
 436
 437                     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 438                                                 FIND_ANYWHERE );
 439
 440                     if( p_playlist != NULL )
 441                     {
 442                         vlc_value_t val;
 443                         val.b_bool = VLC_TRUE;
 444                         var_Set( p_playlist, "intf-popupmenu", val );
 445                         vlc_object_release( p_playlist );
 446                     }
 447                 }
 448                 break;
 449             }
 450             break;
 451
 452         /* Mouse button pressed */
 453         case SDL_MOUSEBUTTONDOWN:
 454             switch( event.button.button )
 455             {
 456             case SDL_BUTTON_LEFT:
 457                 var_Get( p_vout, "mouse-button-down", &val );
 458                 val.i_int |= 1;
 459                 var_Set( p_vout, "mouse-button-down", val );
 460
 461                 /* detect double-clicks */
 462                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
 463                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 464
 465                 p_vout->p_sys->i_lastpressed = mdate();
 466                 break;
 467
 468             case SDL_BUTTON_MIDDLE:
 469                 var_Get( p_vout, "mouse-button-down", &val );
 470                 val.i_int |= 2;
 471                 var_Set( p_vout, "mouse-button-down", val );
 472                 break;
 473
 474             case SDL_BUTTON_RIGHT:
 475                 var_Get( p_vout, "mouse-button-down", &val );
 476                 val.i_int |= 4;
 477                 var_Set( p_vout, "mouse-button-down", val );
 478                 break;
 479             }
 480             break;
 481
 482         /* Quit event (close the window) */
 483         case SDL_QUIT:
 484             {
 485                 playlist_t *p_playlist = (playlist_t *)vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 486                 if( p_playlist != NULL )
 487                 {
 488                     playlist_Stop( p_playlist );
 489                     vlc_object_release( p_playlist );
 490                 }
 491             }
 492             break;
 493
 494         /* Key pressed */
 495         case SDL_KEYDOWN:
 496             val.i_int = ConvertKey( event.key.keysym.sym );
 497
 498             if( !val.i_int )
 499             {
 500                 if( ( event.key.keysym.unicode & 0xff80 ) == 0 )
 501                 {
 502                     val.i_int = event.key.keysym.unicode & 0x7f;
 503                 }
 504             }
 505
 506             if( val.i_int )
 507             {
 508                 if( ( event.key.keysym.mod & KMOD_SHIFT ) )
 509                 {
 510                     val.i_int |= KEY_MODIFIER_SHIFT;
 511                 }
 512                 if( ( event.key.keysym.mod & KMOD_CTRL ) )
 513                 {
 514                     val.i_int |= KEY_MODIFIER_CTRL;
 515                 }
 516                 if( ( event.key.keysym.mod & KMOD_ALT ) )
 517                 {
 518                     val.i_int |= KEY_MODIFIER_ALT;
 519                 }
 520                 var_Set( p_vout->p_libvlc, "key-pressed", val );
 521             }
 522
 523         default:
 524             break;
 525         }
 526     }
 527
 528     /* Fullscreen change */
 529     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 530     {
 531         vlc_value_t val_fs;
 532
 533         /* Update the object variable and trigger callback */
 534         val_fs.b_bool = !p_vout->b_fullscreen;
 535         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 536         var_Set( p_vout, "fullscreen", val_fs );
 537
 538         /*TODO: add the "always on top" code here !*/
 539
 540         p_vout->p_sys->b_cursor_autohidden = 0;
 541         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
 542                         ! p_vout->p_sys->b_cursor_autohidden );
 543
 544         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 545         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 546     }
 547
 548     /* Crop or Aspect Ratio Changes */
 549     if( p_vout->i_changes & VOUT_CROP_CHANGE ||
 550         p_vout->i_changes & VOUT_ASPECT_CHANGE )
 551     {
 552         p_vout->i_changes &= ~VOUT_CROP_CHANGE;
 553         p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 554
 555         p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
 556         p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
 557         p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
 558         p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
 559         p_vout->fmt_out.i_aspect = p_vout->fmt_in.i_aspect;
 560         p_vout->fmt_out.i_sar_num = p_vout->fmt_in.i_sar_num;
 561         p_vout->fmt_out.i_sar_den = p_vout->fmt_in.i_sar_den;
 562         p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
 563
 564         p_vout->i_changes |= VOUT_SIZE_CHANGE;
 565     }
 566
 567     /* Size change */
 568     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 569     {
 570         msg_Dbg( p_vout, "video display resized (%dx%d)",
 571                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
 572
 573         CloseDisplay( p_vout );
 574         OpenDisplay( p_vout );
 575
 576         /* We don't need to signal the vout thread about the size change if
 577          * we can handle rescaling ourselves */
 578         if( p_vout->p_sys->p_overlay != NULL )
 579             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 580     }
 581
 582     /* Pointer change */
 583     if( ! p_vout->p_sys->b_cursor_autohidden &&
 584         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
 585     {
 586         /* Hide the mouse automatically */
 587         p_vout->p_sys->b_cursor_autohidden = 1;
 588         SDL_ShowCursor( 0 );
 589     }
 590
 591     return VLC_SUCCESS;
 592 }
 593
 594 /*****************************************************************************
 595  * Key events handling
 596  *****************************************************************************/
 597 static struct
 598 {
 599     SDLKey sdl_key;
 600     int i_vlckey;
 601 } sdlkeys_to_vlckeys[] =
 602 {
 603     { SDLK_F1,  KEY_F1 },
 604     { SDLK_F2,  KEY_F2 },
 605     { SDLK_F3,  KEY_F3 },
 606     { SDLK_F4,  KEY_F4 },
 607     { SDLK_F5,  KEY_F5 },
 608     { SDLK_F6,  KEY_F6 },
 609     { SDLK_F7,  KEY_F7 },
 610     { SDLK_F8,  KEY_F8 },
 611     { SDLK_F9,  KEY_F9 },
 612     { SDLK_F10, KEY_F10 },
 613     { SDLK_F11, KEY_F11 },
 614     { SDLK_F12, KEY_F12 },
 615
 616     { SDLK_RETURN, KEY_ENTER },
 617     { SDLK_KP_ENTER, KEY_ENTER },
 618     { SDLK_SPACE, KEY_SPACE },
 619     { SDLK_ESCAPE, KEY_ESC },
 620
 621     { SDLK_MENU, KEY_MENU },
 622     { SDLK_LEFT, KEY_LEFT },
 623     { SDLK_RIGHT, KEY_RIGHT },
 624     { SDLK_UP, KEY_UP },
 625     { SDLK_DOWN, KEY_DOWN },
 626
 627     { SDLK_HOME, KEY_HOME },
 628     { SDLK_END, KEY_END },
 629     { SDLK_PAGEUP, KEY_PAGEUP },
 630     { SDLK_PAGEDOWN,  KEY_PAGEDOWN },
 631
 632     { SDLK_INSERT, KEY_INSERT },
 633     { SDLK_DELETE, KEY_DELETE },
 634     /*TODO: find a equivalent for SDL
 635     { , KEY_MEDIA_NEXT_TRACK }
 636     { , KEY_MEDIA_PREV_TRACK }
 637     { , KEY_VOLUME_MUTE }
 638     { , KEY_VOLUME_DOWN }
 639     { , KEY_VOLUME_UP }
 640     { , KEY_MEDIA_PLAY_PAUSE }
 641     { , KEY_MEDIA_PLAY_PAUSE }*/
 642
 643     { 0, 0 }
 644 };
 645
 646 static int ConvertKey( SDLKey sdl_key )
 647 {
 648     int i;
 649     for( i=0; sdlkeys_to_vlckeys[i].sdl_key != 0; i++ )
 650     {
 651         if( sdlkeys_to_vlckeys[i].sdl_key == sdl_key )
 652         {
 653             return sdlkeys_to_vlckeys[i].i_vlckey;
 654         }
 655     }
 656     return 0;
 657 }
 658
 659
 660 /*****************************************************************************
 661  * Display: displays previously rendered output
 662  *****************************************************************************
 663  * This function sends the currently rendered image to the display.
 664  *****************************************************************************/
 665 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 666 {
 667     unsigned int x, y, w, h;
 668     SDL_Rect disp;
 669
 670     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 671                        &x, &y, &w, &h );
 672     disp.x = x;
 673     disp.y = y;
 674     disp.w = w;
 675     disp.h = h;
 676
 677     if( p_vout->p_sys->p_overlay == NULL )
 678     {
 679         /* RGB picture */
 680         SDL_Flip( p_vout->p_sys->p_display );
 681     }
 682     else
 683     {
 684         /* Overlay picture */
 685         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
 686         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
 687         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
 688     }
 689 }
 690
 691 /* following functions are local */
 692
 693 /*****************************************************************************
 694  * OpenDisplay: open and initialize SDL device
 695  *****************************************************************************
 696  * Open and initialize display according to preferences specified in the vout
 697  * thread fields.
 698  *****************************************************************************/
 699 static int OpenDisplay( vout_thread_t *p_vout )
 700 {
 701     uint32_t i_flags;
 702     int i_bpp;
 703
 704     /* SDL fucked up fourcc definitions on bigendian machines */
 705     uint32_t i_sdl_chroma;
 706     char *psz_chroma = NULL;
 707     uint32_t i_chroma = 0;
 708
 709     /* Set main window's size */
 710     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
 711                                                     p_vout->i_window_width;
 712     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
 713                                                      p_vout->i_window_height;
 714
 715     /* Initialize flags and cursor */
 716     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
 717     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
 718
 719     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
 720                              SDL_DEFAULT_BPP, i_flags );
 721     if( i_bpp == 0 )
 722     {
 723         msg_Err( p_vout, "no video mode available" );
 724         return VLC_EGENERIC;
 725     }
 726
 727     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
 728                                                  p_vout->p_sys->i_height,
 729                                                  i_bpp, i_flags );
 730
 731     if( p_vout->p_sys->p_display == NULL )
 732     {
 733         msg_Err( p_vout, "cannot set video mode" );
 734         return VLC_EGENERIC;
 735     }
 736
 737     SDL_LockSurface( p_vout->p_sys->p_display );
 738
 739     if( ( psz_chroma = config_GetPsz( p_vout, "sdl-chroma" ) ) )
 740     {
 741         if( strlen( psz_chroma ) >= 4 )
 742         {
 743             memcpy(&i_chroma, psz_chroma, 4);
 744             msg_Dbg( p_vout, "Forcing chroma to 0x%.8x (%4.4s)", i_chroma, (char*)&i_chroma );
 745         }
 746         else
 747         {
 748             free( psz_chroma );
 749             psz_chroma = NULL;
 750         }
 751     }
 752
 753     /* Choose the chroma we will try first. */
 754     do
 755     {
 756         if( !psz_chroma ) i_chroma = 0;
 757         switch( i_chroma ? i_chroma : p_vout->render.i_chroma )
 758         {
 759             case VLC_FOURCC('Y','U','Y','2'):
 760             case VLC_FOURCC('Y','U','N','V'):
 761                 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 762                 i_sdl_chroma = SDL_YUY2_OVERLAY;
 763                 break;
 764             case VLC_FOURCC('U','Y','V','Y'):
 765             case VLC_FOURCC('U','Y','N','V'):
 766             case VLC_FOURCC('Y','4','2','2'):
 767                 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 768                 i_sdl_chroma = SDL_UYVY_OVERLAY;
 769                 break;
 770             case VLC_FOURCC('Y','V','Y','U'):
 771                 p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
 772                 i_sdl_chroma = SDL_YVYU_OVERLAY;
 773                 break;
 774             case VLC_FOURCC('Y','V','1','2'):
 775             case VLC_FOURCC('I','4','2','0'):
 776             case VLC_FOURCC('I','Y','U','V'):
 777             default:
 778                 p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 779                 i_sdl_chroma = SDL_YV12_OVERLAY;
 780                 break;
 781         }
 782         free( psz_chroma ); psz_chroma = NULL;
 783
 784         p_vout->p_sys->p_overlay =
 785             SDL_CreateYUVOverlay( 32, 32, i_sdl_chroma,
 786                                   p_vout->p_sys->p_display );
 787         /* FIXME: if the first overlay we find is software, don't stop,
 788          * because we may find a hardware one later ... */
 789     }
 790     while( i_chroma && !p_vout->p_sys->p_overlay );
 791
 792
 793     /* If this best choice failed, fall back to other chromas */
 794     if( p_vout->p_sys->p_overlay == NULL )
 795     {
 796         p_vout->output.i_chroma = VLC_FOURCC('I','Y','U','V');
 797         p_vout->p_sys->p_overlay =
 798             SDL_CreateYUVOverlay( 32, 32, SDL_IYUV_OVERLAY,
 799                                   p_vout->p_sys->p_display );
 800     }
 801
 802     if( p_vout->p_sys->p_overlay == NULL )
 803     {
 804         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
 805         p_vout->p_sys->p_overlay =
 806             SDL_CreateYUVOverlay( 32, 32, SDL_YV12_OVERLAY,
 807                                   p_vout->p_sys->p_display );
 808     }
 809
 810     if( p_vout->p_sys->p_overlay == NULL )
 811     {
 812         p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 813         p_vout->p_sys->p_overlay =
 814             SDL_CreateYUVOverlay( 32, 32, SDL_YUY2_OVERLAY,
 815                                   p_vout->p_sys->p_display );
 816     }
 817
 818     if( p_vout->p_sys->p_overlay == NULL )
 819     {
 820         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
 821                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
 822
 823         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 824         {
 825             case 8:
 826                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 827                 p_vout->output.pf_setpalette = SetPalette;
 828                 break;
 829             case 15:
 830                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
 831                 break;
 832             case 16:
 833                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 834                 break;
 835             case 24:
 836                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 837                 break;
 838             case 32:
 839                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 840                 break;
 841             default:
 842                 msg_Err( p_vout, "unknown screen depth %i",
 843                          p_vout->p_sys->p_display->format->BitsPerPixel );
 844                 SDL_UnlockSurface( p_vout->p_sys->p_display );
 845                 SDL_FreeSurface( p_vout->p_sys->p_display );
 846                 return VLC_EGENERIC;
 847         }
 848
 849         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
 850         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
 851         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
 852
 853         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
 854                            VOUT_TITLE " (software RGB SDL output)" );
 855     }
 856     else
 857     {
 858         if( p_vout->p_sys->p_overlay->hw_overlay )
 859         {
 860             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
 861                                VOUT_TITLE " (hardware YUV SDL output)" );
 862         }
 863         else
 864         {
 865             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
 866                                VOUT_TITLE " (software YUV SDL output)" );
 867         }
 868     }
 869
 870     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
 871
 872     return VLC_SUCCESS;
 873 }
 874
 875 /*****************************************************************************
 876  * CloseDisplay: close and reset SDL device
 877  *****************************************************************************
 878  * This function returns all resources allocated by OpenDisplay and restore
 879  * the original state of the device.
 880  *****************************************************************************/
 881 static void CloseDisplay( vout_thread_t *p_vout )
 882 {
 883     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
 884     SDL_UnlockSurface ( p_vout->p_sys->p_display );
 885     SDL_FreeSurface( p_vout->p_sys->p_display );
 886 }
 887
 888 /*****************************************************************************
 889  * NewPicture: allocate a picture
 890  *****************************************************************************
 891  * Returns 0 on success, -1 otherwise
 892  *****************************************************************************/
 893 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 894 {
 895     int i_width  = p_vout->output.i_width;
 896     int i_height = p_vout->output.i_height;
 897
 898     if( p_vout->p_sys->p_overlay == NULL )
 899     {
 900         /* RGB picture */
 901         if( p_vout->p_sys->i_surfaces )
 902         {
 903             /* We already allocated this surface, return */
 904             return VLC_EGENERIC;
 905         }
 906
 907         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 908
 909         if( p_pic->p_sys == NULL )
 910         {
 911             return VLC_ENOMEM;
 912         }
 913
 914         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
 915         {
 916             case 8:
 917                 p_pic->p->i_pixel_pitch = 1;
 918                 break;
 919             case 15:
 920             case 16:
 921                 p_pic->p->i_pixel_pitch = 2;
 922                 break;
 923             case 24:
 924             case 32:
 925                 p_pic->p->i_pixel_pitch = 4;
 926                 break;
 927             default:
 928                 return VLC_EGENERIC;
 929         }
 930
 931         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
 932         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
 933         p_pic->p->i_visible_lines = p_vout->p_sys->p_display->h;
 934         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
 935         p_pic->p->i_visible_pitch =
 936             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
 937
 938         p_vout->p_sys->i_surfaces++;
 939
 940         p_pic->i_planes = 1;
 941     }
 942     else
 943     {
 944         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 945
 946         if( p_pic->p_sys == NULL )
 947         {
 948             return VLC_ENOMEM;
 949         }
 950
 951         p_pic->p_sys->p_overlay =
 952             SDL_CreateYUVOverlay( i_width, i_height,
 953                                   p_vout->output.i_chroma,
 954                                   p_vout->p_sys->p_display );
 955
 956         if( p_pic->p_sys->p_overlay == NULL )
 957         {
 958             free( p_pic->p_sys );
 959             return VLC_EGENERIC;
 960         }
 961
 962         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
 963
 964         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
 965         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
 966         p_pic->p[Y_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h;
 967         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
 968
 969         switch( p_vout->output.i_chroma )
 970         {
 971         case SDL_YV12_OVERLAY:
 972             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 973             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 974
 975             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
 976             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 977             p_pic->p[U_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
 978             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
 979             p_pic->p[U_PLANE].i_pixel_pitch = 1;
 980             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 981
 982             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 983             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 984             p_pic->p[V_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
 985             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
 986             p_pic->p[V_PLANE].i_pixel_pitch = 1;
 987             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
 988
 989             p_pic->i_planes = 3;
 990             break;
 991
 992         case SDL_IYUV_OVERLAY:
 993             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
 994             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
 995
 996             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
 997             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
 998             p_pic->p[U_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
 999             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
1000             p_pic->p[U_PLANE].i_pixel_pitch = 1;
1001             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
1002
1003             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
1004             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
1005             p_pic->p[V_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
1006             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
1007             p_pic->p[V_PLANE].i_pixel_pitch = 1;
1008             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
1009
1010             p_pic->i_planes = 3;
1011             break;
1012
1013         default:
1014             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
1015             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w * 2;
1016
1017             p_pic->i_planes = 1;
1018             break;
1019         }
1020     }
1021
1022     return VLC_SUCCESS;
1023 }
1024
1025 /*****************************************************************************
1026  * SetPalette: sets an 8 bpp palette
1027  *****************************************************************************/
1028 static void SetPalette( vout_thread_t *p_vout,
1029                         uint16_t *red, uint16_t *green, uint16_t *blue )
1030 {
1031     SDL_Color colors[256];
1032     int i;
1033
1034     /* Fill colors with color information */
1035     for( i = 0; i < 256; i++ )
1036     {
1037         colors[ i ].r = red[ i ] >> 8;
1038         colors[ i ].g = green[ i ] >> 8;
1039         colors[ i ].b = blue[ i ] >> 8;
1040     }
1041
1042     /* Set palette */
1043     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
1044     {
1045         msg_Err( p_vout, "failed to set palette" );
1046     }
1047 }
1048