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sdl.c
资源名称：vlc-0.8.1.tar.gz　[点击查看]
上传用户：riyaled888
上传日期：2009-03-27
资源大小：7338k
文件大小：31k
源码类别：

多媒体

开发平台：

MultiPlatform

sdl.c：源码内容
  1. /*****************************************************************************
  2.  * sdl.c: SDL video output display method
  3.  *****************************************************************************
  4.  * Copyright (C) 1998-2001 VideoLAN
  5.  * $Id: sdl.c 8551 2004-08-28 17:36:02Z gbazin $
  6.  *
  7.  * Authors: Samuel Hocevar <sam@zoy.org>
  8.  *          Pierre Baillet <oct@zoy.org>
  9.  *          Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>
  10.  *
  11.  * This program is free software; you can redistribute it and/or modify
  12.  * it under the terms of the GNU General Public License as published by
  13.  * the Free Software Foundation; either version 2 of the License, or
  14.  * (at your option) any later version.
  15.  *
  16.  * This program is distributed in the hope that it will be useful,
  17.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19.  * GNU General Public License for more details.
  20.  *
  21.  * You should have received a copy of the GNU General Public License
  22.  * along with this program; if not, write to the Free Software
  23.  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24.  *****************************************************************************/
  26. /*****************************************************************************
  27.  * Preamble
  28.  *****************************************************************************/
  29. #include <errno.h>                                                 /* ENOMEM */
  30. #include <stdlib.h>                                                /* free() */
  31. #include <string.h>                                            /* strerror() */
  33. #include <vlc/vlc.h>
  34. #include <vlc/intf.h>
  35. #include <vlc/vout.h>
  36. #include <vlc/aout.h>
  38. #include <sys/types.h>
  39. #ifndef WIN32
  40. #   include <netinet/in.h>                            /* BSD: struct in_addr */
  41. #endif
  43. #include SDL_INCLUDE_FILE
  45. #define SDL_MAX_DIRECTBUFFERS 10
  46. #define SDL_DEFAULT_BPP 16
  48. /*****************************************************************************
  49.  * vout_sys_t: video output SDL method descriptor
  50.  *****************************************************************************
  51.  * This structure is part of the video output thread descriptor.
  52.  * It describes the SDL specific properties of an output thread.
  53.  *****************************************************************************/
  54. struct vout_sys_t
  55. {
  56.     SDL_Surface *   p_display;                             /* display device */
  58.     int i_width;
  59.     int i_height;
  61.     /* For YUV output */
  62.     SDL_Overlay * p_overlay;   /* An overlay we keep to grab the XVideo port */
  64.     /* For RGB output */
  65.     int i_surfaces;
  67.     vlc_bool_t  b_cursor;
  68.     vlc_bool_t  b_cursor_autohidden;
  69.     mtime_t     i_lastmoved;
  70.     mtime_t     i_lastpressed;                        /* to track dbl-clicks */
  71. };
  73. /*****************************************************************************
  74.  * picture_sys_t: direct buffer method descriptor
  75.  *****************************************************************************
  76.  * This structure is part of the picture descriptor, it describes the
  77.  * SDL specific properties of a direct buffer.
  78.  *****************************************************************************/
  79. struct picture_sys_t
  80. {
  81.     SDL_Overlay *p_overlay;
  82. };
  84. /*****************************************************************************
  85.  * Local prototypes
  86.  *****************************************************************************/
  87. static int  Open      ( vlc_object_t * );
  88. static void Close     ( vlc_object_t * );
  89. static int  Init      ( vout_thread_t * );
  90. static void End       ( vout_thread_t * );
  91. static int  Manage    ( vout_thread_t * );
  92. static void Display   ( vout_thread_t *, picture_t * );
  94. static int  OpenDisplay     ( vout_thread_t * );
  95. static void CloseDisplay    ( vout_thread_t * );
  96. static int  NewPicture      ( vout_thread_t *, picture_t * );
  97. static void SetPalette      ( vout_thread_t *,
  98.                               uint16_t *, uint16_t *, uint16_t * );
  100. /*****************************************************************************
  101.  * Module descriptor
  102.  *****************************************************************************/
  103. vlc_module_begin();
  104.     set_description( _("Simple DirectMedia Layer video output") );
  105.     set_capability( "video output", 60 );
  106.     add_shortcut( "sdl" );
  107.     set_callbacks( Open, Close );
  108.     /* XXX: check for conflicts with the SDL audio output */
  109.     var_Create( p_module->p_libvlc, "sdl", VLC_VAR_MUTEX );
  110. #if defined( __i386__ )
  111.     /* On i386, SDL is linked against svgalib */
  112.     linked_with_a_crap_library_which_uses_atexit();
  113. #endif
  114. vlc_module_end();
  116. /*****************************************************************************
  117.  * OpenVideo: allocate SDL video thread output method
  118.  *****************************************************************************
  119.  * This function allocate and initialize a SDL vout method. It uses some of the
  120.  * vout properties to choose the correct mode, and change them according to the
  121.  * mode actually used.
  122.  *****************************************************************************/
  123. static int Open ( vlc_object_t *p_this )
  124. {
  125.     vout_thread_t * p_vout = (vout_thread_t *)p_this;
  126.     vlc_value_t lockval;
  128. #ifdef HAVE_SETENV
  129.     char *psz_method;
  130. #endif
  132.     var_Get( p_this->p_libvlc, "sdl", &lockval );
  133.     vlc_mutex_lock( lockval.p_address );
  135.     if( SDL_WasInit( SDL_INIT_VIDEO ) != 0 )
  136.     {
  137.         vlc_mutex_unlock( lockval.p_address );
  138.         return VLC_EGENERIC;
  139.     }
  141.     /* Allocate structure */
  142.     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
  143.     if( p_vout->p_sys == NULL )
  144.     {
  145.         msg_Err( p_vout, "out of memory" );
  146.         vlc_mutex_unlock( lockval.p_address );
  147.         return VLC_ENOMEM;
  148.     }
  150.     p_vout->pf_init = Init;
  151.     p_vout->pf_end = End;
  152.     p_vout->pf_manage = Manage;
  153.     p_vout->pf_render = NULL;
  154.     p_vout->pf_display = Display;
  156. #ifdef HAVE_SETENV
  157.     psz_method = config_GetPsz( p_vout, "vout" );
  158.     if( psz_method )
  159.     {
  160.         while( *psz_method && *psz_method != ':' )
  161.         {
  162.             psz_method++;
  163.         }
  165.         if( *psz_method )
  166.         {
  167.             setenv( "SDL_VIDEODRIVER", psz_method + 1, 1 );
  168.         }
  169.     }
  170. #endif
  172.     /* Initialize library */
  173.     if( SDL_Init( SDL_INIT_VIDEO
  174. #ifndef WIN32
  175.     /* Win32 SDL implementation doesn't support SDL_INIT_EVENTTHREAD yet*/
  176.                 | SDL_INIT_EVENTTHREAD
  177. #endif
  178. #ifdef DEBUG
  179.     /* In debug mode you may want vlc to dump a core instead of staying
  180.      * stuck */
  181.                 | SDL_INIT_NOPARACHUTE
  182. #endif
  183.                 ) < 0 )
  184.     {
  185.         msg_Err( p_vout, "cannot initialize SDL (%s)", SDL_GetError() );
  186.         free( p_vout->p_sys );
  187.         vlc_mutex_unlock( lockval.p_address );
  188.         return VLC_EGENERIC;
  189.     }
  191.     vlc_mutex_unlock( lockval.p_address );
  193.     p_vout->p_sys->b_cursor = 1;
  194.     p_vout->p_sys->b_cursor_autohidden = 0;
  195.     p_vout->p_sys->i_lastmoved = mdate();
  197.     if( OpenDisplay( p_vout ) )
  198.     {
  199.         msg_Err( p_vout, "cannot set up SDL (%s)", SDL_GetError() );
  200.         SDL_QuitSubSystem( SDL_INIT_VIDEO );
  201.         free( p_vout->p_sys );
  202.         return VLC_EGENERIC;
  203.     }
  205.     return VLC_SUCCESS;
  206. }
  208. /*****************************************************************************
  209.  * Init: initialize SDL video thread output method
  210.  *****************************************************************************
  211.  * This function initialize the SDL display device.
  212.  *****************************************************************************/
  213. static int Init( vout_thread_t *p_vout )
  214. {
  215.     int i_index;
  216.     picture_t *p_pic;
  218.     p_vout->p_sys->i_surfaces = 0;
  220.     I_OUTPUTPICTURES = 0;
  222.     /* Initialize the output structure */
  223.     if( p_vout->p_sys->p_overlay == NULL )
  224.     {
  225.         /* All we have is an RGB image with square pixels */
  226.         p_vout->output.i_width  = p_vout->p_sys->i_width;
  227.         p_vout->output.i_height = p_vout->p_sys->i_height;
  228.         p_vout->output.i_aspect = p_vout->output.i_width
  229.                                    * VOUT_ASPECT_FACTOR
  230.                                    / p_vout->output.i_height;
  231.     }
  232.     else
  233.     {
  234.         /* We may need to convert the chroma, but at least we keep the
  235.          * aspect ratio */
  236.         p_vout->output.i_width  = p_vout->render.i_width;
  237.         p_vout->output.i_height = p_vout->render.i_height;
  238.         p_vout->output.i_aspect = p_vout->render.i_aspect;
  239.     }
  241.     /* Try to initialize SDL_MAX_DIRECTBUFFERS direct buffers */
  242.     while( I_OUTPUTPICTURES < SDL_MAX_DIRECTBUFFERS )
  243.     {
  244.         p_pic = NULL;
  246.         /* Find an empty picture slot */
  247.         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
  248.         {
  249.             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
  250.             {
  251.                 p_pic = p_vout->p_picture + i_index;
  252.                 break;
  253.             }
  254.         }
  256.         /* Allocate the picture if we found one */
  257.         if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
  258.         {
  259.             break;
  260.         }
  262.         p_pic->i_status = DESTROYED_PICTURE;
  263.         p_pic->i_type   = DIRECT_PICTURE;
  265.         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
  267.         I_OUTPUTPICTURES++;
  268.     }
  270.     return VLC_SUCCESS;
  271. }
  273. /*****************************************************************************
  274.  * End: terminate Sys video thread output method
  275.  *****************************************************************************
  276.  * Terminate an output method created by OpenVideo
  277.  *****************************************************************************/
  278. static void End( vout_thread_t *p_vout )
  279. {
  280.     int i_index;
  282.     /* Free the output buffers we allocated */
  283.     for( i_index = I_OUTPUTPICTURES ; i_index ; )
  284.     {
  285.         i_index--;
  286.         if( p_vout->p_sys->p_overlay == NULL )
  287.         {
  288.             /* RGB picture */
  289.         }
  290.         else
  291.         {
  292.             SDL_UnlockYUVOverlay(
  293.                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
  294.             SDL_FreeYUVOverlay(
  295.                     PP_OUTPUTPICTURE[ i_index ]->p_sys->p_overlay );
  296.         }
  297.         free( PP_OUTPUTPICTURE[ i_index ]->p_sys );
  298.     }
  299. }
  301. /*****************************************************************************
  302.  * CloseVideo: destroy Sys video thread output method
  303.  *****************************************************************************
  304.  * Terminate an output method created by vout_SDLCreate
  305.  *****************************************************************************/
  306. static void Close ( vlc_object_t *p_this )
  307. {
  308.     vout_thread_t * p_vout = (vout_thread_t *)p_this;
  310.     CloseDisplay( p_vout );
  311.     SDL_QuitSubSystem( SDL_INIT_VIDEO );
  313.     free( p_vout->p_sys );
  314. }
  316. /*****************************************************************************
  317.  * Manage: handle Sys events
  318.  *****************************************************************************
  319.  * This function should be called regularly by video output thread. It returns
  320.  * a non null value if an error occurred.
  321.  *****************************************************************************/
  322. static int Manage( vout_thread_t *p_vout )
  323. {
  324.     SDL_Event event;                                            /* SDL event */
  325.     vlc_value_t val;
  326.     int i_width, i_height, i_x, i_y;
  328.     /* Process events */
  329.     while( SDL_PollEvent(&event) )
  330.     {
  331.         switch( event.type )
  332.         {
  333.         case SDL_VIDEORESIZE:                          /* Resizing of window */
  334.             /* Update dimensions */
  335.             p_vout->i_changes |= VOUT_SIZE_CHANGE;
  336.             p_vout->i_window_width = p_vout->p_sys->i_width = event.resize.w;
  337.             p_vout->i_window_height = p_vout->p_sys->i_height = event.resize.h;
  338.             break;
  340.         case SDL_MOUSEMOTION:
  341.             vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
  342.                                p_vout->p_sys->i_height,
  343.                                &i_x, &i_y, &i_width, &i_height );
  345.             val.i_int = ( event.motion.x - i_x )
  346.                          * p_vout->render.i_width / i_width;
  347.             var_Set( p_vout, "mouse-x", val );
  348.             val.i_int = ( event.motion.y - i_y )
  349.                          * p_vout->render.i_height / i_height;
  350.             var_Set( p_vout, "mouse-y", val );
  352.             val.b_bool = VLC_TRUE;
  353.             var_Set( p_vout, "mouse-moved", val );
  355.             if( p_vout->p_sys->b_cursor &&
  356.                 (abs(event.motion.xrel) > 2 || abs(event.motion.yrel) > 2) )
  357.             {
  358.                 if( p_vout->p_sys->b_cursor_autohidden )
  359.                 {
  360.                     p_vout->p_sys->b_cursor_autohidden = 0;
  361.                     SDL_ShowCursor( 1 );
  362.                 }
  363.                 else
  364.                 {
  365.                     p_vout->p_sys->i_lastmoved = mdate();
  366.                 }
  367.             }
  368.             break;
  370.         case SDL_MOUSEBUTTONUP:
  371.             switch( event.button.button )
  372.             {
  373.             case SDL_BUTTON_LEFT:
  374.                 val.b_bool = VLC_TRUE;
  375.                 var_Set( p_vout, "mouse-clicked", val );
  376.                 break;
  378.             case SDL_BUTTON_RIGHT:
  379.                 {
  380.                     intf_thread_t *p_intf;
  381.                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
  382.                                                       FIND_ANYWHERE );
  383.                     if( p_intf )
  384.                     {
  385.                         p_intf->b_menu_change = 1;
  386.                         vlc_object_release( p_intf );
  387.                     }
  388.                 }
  389.                 break;
  390.             }
  391.             break;
  393.         case SDL_MOUSEBUTTONDOWN:
  394.             switch( event.button.button )
  395.             {
  396.             case SDL_BUTTON_LEFT:
  397.                 /* In this part we will eventually manage
  398.                  * clicks for DVD navigation for instance. */
  400.                 /* detect double-clicks */
  401.                 if( ( mdate() - p_vout->p_sys->i_lastpressed ) < 300000 )
  402.                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
  404.                 p_vout->p_sys->i_lastpressed = mdate();
  405.                 break;
  407.             case 4:
  408.                 break;
  410.             case 5:
  411.                 break;
  412.             }
  413.             break;
  415.         case SDL_QUIT:
  416.             p_vout->p_vlc->b_die = 1;
  417.             break;
  419.         case SDL_KEYDOWN:                             /* if a key is pressed */
  421.             switch( event.key.keysym.sym )
  422.             {
  423.             case SDLK_ESCAPE:
  424.                 if( p_vout->b_fullscreen )
  425.                 {
  426.                     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
  427.                 }
  428.                 else
  429.                 {
  430.                     p_vout->p_vlc->b_die = 1;
  431.                 }
  432.                 break;
  434.             case SDLK_q:                                             /* quit */
  435.                 p_vout->p_vlc->b_die = 1;
  436.                 break;
  438.             case SDLK_f:                             /* switch to fullscreen */
  439.                 p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
  440.                 break;
  442.             case SDLK_c:                                 /* toggle grayscale */
  443.                 p_vout->b_grayscale = ! p_vout->b_grayscale;
  444.                 p_vout->i_changes |= VOUT_GRAYSCALE_CHANGE;
  445.                 break;
  447.             case SDLK_i:                                      /* toggle info */
  448.                 p_vout->b_info = ! p_vout->b_info;
  449.                 p_vout->i_changes |= VOUT_INFO_CHANGE;
  450.                 break;
  452.             case SDLK_s:                                   /* toggle scaling */
  453.                 p_vout->b_scale = ! p_vout->b_scale;
  454.                 p_vout->i_changes |= VOUT_SCALE_CHANGE;
  455.                 break;
  457.             case SDLK_SPACE:                             /* toggle interface */
  458.                 p_vout->b_interface = ! p_vout->b_interface;
  459.                 p_vout->i_changes |= VOUT_INTF_CHANGE;
  460.                 break;
  462.             case SDLK_MENU:
  463.                 {
  464.                     intf_thread_t *p_intf;
  465.                     p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
  466.                                                       FIND_ANYWHERE );
  467.                     if( p_intf != NULL )
  468.                     {
  469.                         p_intf->b_menu_change = 1;
  470.                         vlc_object_release( p_intf );
  471.                     }
  472.                 }
  473.                 break;
  475.             case SDLK_LEFT:
  476.                 break;
  478.             case SDLK_RIGHT:
  479.                 break;
  481.             case SDLK_UP:
  482.                 break;
  484.             case SDLK_DOWN:
  485.                 break;
  487.             case SDLK_b:
  488.                 {
  489.                     audio_volume_t i_volume;
  490.                     if ( !aout_VolumeDown( p_vout, 1, &i_volume ) )
  491.                     {
  492.                         msg_Dbg( p_vout, "audio volume is now %d", i_volume );
  493.                     }
  494.                     else
  495.                     {
  496.                         msg_Dbg( p_vout, "audio volume: operation not supported" );
  497.                     }
  498.                 }
  499.                 break;
  501.             case SDLK_n:
  502.                 {
  503.                     audio_volume_t i_volume;
  504.                     if ( !aout_VolumeUp( p_vout, 1, &i_volume ) )
  505.                     {
  506.                         msg_Dbg( p_vout, "audio volume is now %d", i_volume );
  507.                     }
  508.                     else
  509.                     {
  510.                         msg_Dbg( p_vout, "audio volume: operation not supported" );
  511.                     }
  512.                 }
  513.                 break;
  515.              default:
  516.                 break;
  517.             }
  518.             break;
  520.         default:
  521.             break;
  522.         }
  523.     }
  525.     /* Fullscreen change */
  526.     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
  527.     {
  528.         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
  530.         p_vout->p_sys->b_cursor_autohidden = 0;
  531.         SDL_ShowCursor( p_vout->p_sys->b_cursor &&
  532.                         ! p_vout->p_sys->b_cursor_autohidden );
  534.         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
  535.         p_vout->i_changes |= VOUT_SIZE_CHANGE;
  536.     }
  538.     /*
  539.      * Size change
  540.      */
  541.     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
  542.     {
  543.         msg_Dbg( p_vout, "video display resized (%dx%d)",
  544.                  p_vout->p_sys->i_width, p_vout->p_sys->i_height );
  546.         CloseDisplay( p_vout );
  547.         OpenDisplay( p_vout );
  549.         /* We don't need to signal the vout thread about the size change if
  550.          * we can handle rescaling ourselves */
  551.         if( p_vout->p_sys->p_overlay != NULL )
  552.             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
  554.     }
  556.     /* Pointer change */
  557.     if( ! p_vout->p_sys->b_cursor_autohidden &&
  558.         ( mdate() - p_vout->p_sys->i_lastmoved > 2000000 ) )
  559.     {
  560.         /* Hide the mouse automatically */
  561.         p_vout->p_sys->b_cursor_autohidden = 1;
  562.         SDL_ShowCursor( 0 );
  563.     }
  565.     return VLC_SUCCESS;
  566. }
  568. /*****************************************************************************
  569.  * Display: displays previously rendered output
  570.  *****************************************************************************
  571.  * This function sends the currently rendered image to the display.
  572.  *****************************************************************************/
  573. static void Display( vout_thread_t *p_vout, picture_t *p_pic )
  574. {
  575.     int x, y, w, h;
  576.     SDL_Rect disp;
  578.     vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
  579.                        &x, &y, &w, &h );
  580.     disp.x = x;
  581.     disp.y = y;
  582.     disp.w = w;
  583.     disp.h = h;
  585.     if( p_vout->p_sys->p_overlay == NULL )
  586.     {
  587.         /* RGB picture */
  588.         SDL_Flip( p_vout->p_sys->p_display );
  589.     }
  590.     else
  591.     {
  592.         /* Overlay picture */
  593.         SDL_UnlockYUVOverlay( p_pic->p_sys->p_overlay);
  594.         SDL_DisplayYUVOverlay( p_pic->p_sys->p_overlay , &disp );
  595.         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay);
  596.     }
  597. }
  599. /* following functions are local */
  601. /*****************************************************************************
  602.  * OpenDisplay: open and initialize SDL device
  603.  *****************************************************************************
  604.  * Open and initialize display according to preferences specified in the vout
  605.  * thread fields.
  606.  *****************************************************************************/
  607. static int OpenDisplay( vout_thread_t *p_vout )
  608. {
  609.     uint32_t i_flags;
  610.     int i_bpp;
  612.     /* SDL fucked up fourcc definitions on bigendian machines */
  613.     uint32_t i_sdl_chroma;
  615.     /* Set main window's size */
  616.     p_vout->p_sys->i_width = p_vout->b_fullscreen ? p_vout->output.i_width :
  617.                                                     p_vout->i_window_width;
  618.     p_vout->p_sys->i_height = p_vout->b_fullscreen ? p_vout->output.i_height :
  619.                                                      p_vout->i_window_height;
  621.     /* Initialize flags and cursor */
  622.     i_flags = SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE | SDL_DOUBLEBUF;
  623.     i_flags |= p_vout->b_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE;
  625.     i_bpp = SDL_VideoModeOK( p_vout->p_sys->i_width, p_vout->p_sys->i_height,
  626.                              SDL_DEFAULT_BPP, i_flags );
  627.     if( i_bpp == 0 )
  628.     {
  629.         msg_Err( p_vout, "no video mode available" );
  630.         return VLC_EGENERIC;
  631.     }
  633.     p_vout->p_sys->p_display = SDL_SetVideoMode( p_vout->p_sys->i_width,
  634.                                                  p_vout->p_sys->i_height,
  635.                                                  i_bpp, i_flags );
  637.     if( p_vout->p_sys->p_display == NULL )
  638.     {
  639.         msg_Err( p_vout, "cannot set video mode" );
  640.         return VLC_EGENERIC;
  641.     }
  643.     SDL_LockSurface( p_vout->p_sys->p_display );
  645.     /* Choose the chroma we will try first. */
  646.     switch( p_vout->render.i_chroma )
  647.     {
  648.         case VLC_FOURCC('Y','U','Y','2'):
  649.         case VLC_FOURCC('Y','U','N','V'):
  650.             p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
  651.             i_sdl_chroma = SDL_YUY2_OVERLAY;
  652.             break;
  653.         case VLC_FOURCC('U','Y','V','Y'):
  654.         case VLC_FOURCC('U','Y','N','V'):
  655.         case VLC_FOURCC('Y','4','2','2'):
  656.             p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
  657.             i_sdl_chroma = SDL_UYVY_OVERLAY;
  658.             break;
  659.         case VLC_FOURCC('Y','V','Y','U'):
  660.             p_vout->output.i_chroma = VLC_FOURCC('Y','V','Y','U');
  661.             i_sdl_chroma = SDL_YVYU_OVERLAY;
  662.             break;
  663.         case VLC_FOURCC('Y','V','1','2'):
  664.         case VLC_FOURCC('I','4','2','0'):
  665.         case VLC_FOURCC('I','Y','U','V'):
  666.         default:
  667.             p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
  668.             i_sdl_chroma = SDL_YV12_OVERLAY;
  669.             break;
  670.     }
  672.     p_vout->p_sys->p_overlay =
  673.         SDL_CreateYUVOverlay( 32, 32, i_sdl_chroma, p_vout->p_sys->p_display );
  674.     /* FIXME: if the first overlay we find is software, don't stop,
  675.      * because we may find a hardware one later ... */
  677.     /* If this best choice failed, fall back to other chromas */
  678.     if( p_vout->p_sys->p_overlay == NULL )
  679.     {
  680.         p_vout->output.i_chroma = VLC_FOURCC('I','Y','U','V');
  681.         p_vout->p_sys->p_overlay =
  682.             SDL_CreateYUVOverlay( 32, 32, SDL_IYUV_OVERLAY,
  683.                                   p_vout->p_sys->p_display );
  684.     }
  686.     if( p_vout->p_sys->p_overlay == NULL )
  687.     {
  688.         p_vout->output.i_chroma = VLC_FOURCC('Y','V','1','2');
  689.         p_vout->p_sys->p_overlay =
  690.             SDL_CreateYUVOverlay( 32, 32, SDL_YV12_OVERLAY,
  691.                                   p_vout->p_sys->p_display );
  692.     }
  694.     if( p_vout->p_sys->p_overlay == NULL )
  695.     {
  696.         p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
  697.         p_vout->p_sys->p_overlay =
  698.             SDL_CreateYUVOverlay( 32, 32, SDL_YUY2_OVERLAY,
  699.                                   p_vout->p_sys->p_display );
  700.     }
  702.     if( p_vout->p_sys->p_overlay == NULL )
  703.     {
  704.         msg_Warn( p_vout, "no SDL overlay for 0x%.8x (%4.4s)",
  705.                   p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma );
  707.         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
  708.         {
  709.             case 8:
  710.                 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
  711.                 p_vout->output.pf_setpalette = SetPalette;
  712.                 break;
  713.             case 15:
  714.                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
  715.                 break;
  716.             case 16:
  717.                 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
  718.                 break;
  719.             case 24:
  720.                 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
  721.                 break;
  722.             case 32:
  723.                 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
  724.                 break;
  725.             default:
  726.                 msg_Err( p_vout, "unknown screen depth %i",
  727.                          p_vout->p_sys->p_display->format->BitsPerPixel );
  728.                 SDL_UnlockSurface( p_vout->p_sys->p_display );
  729.                 SDL_FreeSurface( p_vout->p_sys->p_display );
  730.                 return VLC_EGENERIC;
  731.         }
  733.         p_vout->output.i_rmask = p_vout->p_sys->p_display->format->Rmask;
  734.         p_vout->output.i_gmask = p_vout->p_sys->p_display->format->Gmask;
  735.         p_vout->output.i_bmask = p_vout->p_sys->p_display->format->Bmask;
  737.         SDL_WM_SetCaption( VOUT_TITLE " (software RGB SDL output)",
  738.                            VOUT_TITLE " (software RGB SDL output)" );
  739.     }
  740.     else
  741.     {
  742.         if( p_vout->p_sys->p_overlay->hw_overlay )
  743.         {
  744.             SDL_WM_SetCaption( VOUT_TITLE " (hardware YUV SDL output)",
  745.                                VOUT_TITLE " (hardware YUV SDL output)" );
  746.         }
  747.         else
  748.         {
  749.             SDL_WM_SetCaption( VOUT_TITLE " (software YUV SDL output)",
  750.                                VOUT_TITLE " (software YUV SDL output)" );
  751.         }
  752.     }
  754.     SDL_EventState( SDL_KEYUP, SDL_IGNORE );               /* ignore keys up */
  756.     return VLC_SUCCESS;
  757. }
  759. /*****************************************************************************
  760.  * CloseDisplay: close and reset SDL device
  761.  *****************************************************************************
  762.  * This function returns all resources allocated by OpenDisplay and restore
  763.  * the original state of the device.
  764.  *****************************************************************************/
  765. static void CloseDisplay( vout_thread_t *p_vout )
  766. {
  767.     SDL_FreeYUVOverlay( p_vout->p_sys->p_overlay );
  768.     SDL_UnlockSurface ( p_vout->p_sys->p_display );
  769.     SDL_FreeSurface( p_vout->p_sys->p_display );
  770. }
  772. /*****************************************************************************
  773.  * NewPicture: allocate a picture
  774.  *****************************************************************************
  775.  * Returns 0 on success, -1 otherwise
  776.  *****************************************************************************/
  777. static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
  778. {
  779.     int i_width  = p_vout->output.i_width;
  780.     int i_height = p_vout->output.i_height;
  782.     if( p_vout->p_sys->p_overlay == NULL )
  783.     {
  784.         /* RGB picture */
  785.         if( p_vout->p_sys->i_surfaces )
  786.         {
  787.             /* We already allocated this surface, return */
  788.             return VLC_EGENERIC;
  789.         }
  791.         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
  793.         if( p_pic->p_sys == NULL )
  794.         {
  795.             return VLC_ENOMEM;
  796.         }
  798.         switch( p_vout->p_sys->p_display->format->BitsPerPixel )
  799.         {
  800.             case 8:
  801.                 p_pic->p->i_pixel_pitch = 1;
  802.                 break;
  803.             case 15:
  804.             case 16:
  805.                 p_pic->p->i_pixel_pitch = 2;
  806.                 break;
  807.             case 24:
  808.             case 32:
  809.                 p_pic->p->i_pixel_pitch = 4;
  810.                 break;
  811.             default:
  812.                 return VLC_EGENERIC;
  813.         }
  815.         p_pic->p->p_pixels = p_vout->p_sys->p_display->pixels;
  816.         p_pic->p->i_lines = p_vout->p_sys->p_display->h;
  817.         p_pic->p->i_visible_lines = p_vout->p_sys->p_display->h;
  818.         p_pic->p->i_pitch = p_vout->p_sys->p_display->pitch;
  819.         p_pic->p->i_visible_pitch =
  820.             p_pic->p->i_pixel_pitch * p_vout->p_sys->p_display->w;
  822.         p_vout->p_sys->i_surfaces++;
  824.         p_pic->i_planes = 1;
  825.     }
  826.     else
  827.     {
  828.         p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
  830.         if( p_pic->p_sys == NULL )
  831.         {
  832.             return VLC_ENOMEM;
  833.         }
  835.         p_pic->p_sys->p_overlay =
  836.             SDL_CreateYUVOverlay( i_width, i_height,
  837.                                   p_vout->output.i_chroma,
  838.                                   p_vout->p_sys->p_display );
  840.         if( p_pic->p_sys->p_overlay == NULL )
  841.         {
  842.             free( p_pic->p_sys );
  843.             return VLC_EGENERIC;
  844.         }
  846.         SDL_LockYUVOverlay( p_pic->p_sys->p_overlay );
  848.         p_pic->Y_PIXELS = p_pic->p_sys->p_overlay->pixels[0];
  849.         p_pic->p[Y_PLANE].i_lines = p_pic->p_sys->p_overlay->h;
  850.         p_pic->p[Y_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h;
  851.         p_pic->p[Y_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[0];
  853.         switch( p_vout->output.i_chroma )
  854.         {
  855.         case SDL_YV12_OVERLAY:
  856.             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
  857.             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
  859.             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
  860.             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
  861.             p_pic->p[U_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
  862.             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
  863.             p_pic->p[U_PLANE].i_pixel_pitch = 1;
  864.             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
  866.             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
  867.             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
  868.             p_pic->p[V_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
  869.             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
  870.             p_pic->p[V_PLANE].i_pixel_pitch = 1;
  871.             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
  873.             p_pic->i_planes = 3;
  874.             break;
  876.         case SDL_IYUV_OVERLAY:
  877.             p_pic->p[Y_PLANE].i_pixel_pitch = 1;
  878.             p_pic->p[Y_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w;
  880.             p_pic->U_PIXELS = p_pic->p_sys->p_overlay->pixels[1];
  881.             p_pic->p[U_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
  882.             p_pic->p[U_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
  883.             p_pic->p[U_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[1];
  884.             p_pic->p[U_PLANE].i_pixel_pitch = 1;
  885.             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
  887.             p_pic->V_PIXELS = p_pic->p_sys->p_overlay->pixels[2];
  888.             p_pic->p[V_PLANE].i_lines = p_pic->p_sys->p_overlay->h / 2;
  889.             p_pic->p[V_PLANE].i_visible_lines = p_pic->p_sys->p_overlay->h / 2;
  890.             p_pic->p[V_PLANE].i_pitch = p_pic->p_sys->p_overlay->pitches[2];
  891.             p_pic->p[V_PLANE].i_pixel_pitch = 1;
  892.             p_pic->p[V_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w / 2;
  894.             p_pic->i_planes = 3;
  895.             break;
  897.         default:
  898.             p_pic->p[Y_PLANE].i_pixel_pitch = 2;
  899.             p_pic->p[U_PLANE].i_visible_pitch = p_pic->p_sys->p_overlay->w * 2;
  901.             p_pic->i_planes = 1;
  902.             break;
  903.         }
  904.     }
  906.     return VLC_SUCCESS;
  907. }
  909. /*****************************************************************************
  910.  * SetPalette: sets an 8 bpp palette
  911.  *****************************************************************************/
  912. static void SetPalette( vout_thread_t *p_vout,
  913.                         uint16_t *red, uint16_t *green, uint16_t *blue )
  914. {
  915.     SDL_Color colors[256];
  916.     int i;
  918.     /* Fill colors with color information */
  919.     for( i = 0; i < 256; i++ )
  920.     {
  921.         colors[ i ].r = red[ i ] >> 8;
  922.         colors[ i ].g = green[ i ] >> 8;
  923.         colors[ i ].b = blue[ i ] >> 8;
  924.     }
  926.     /* Set palette */
  927.     if( SDL_SetColors( p_vout->p_sys->p_display, colors, 0, 256 ) == 0 )
  928.     {
  929.         msg_Err( p_vout, "failed setting palette" );
  930.     }
  931. }