git.sesse.net Git - vlc/blob - plugins/fb/fb.c

   1 /*****************************************************************************
   2  * fb.c : framebuffer plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2001 VideoLAN
   5  * $Id: fb.c,v 1.12 2002/01/12 01:25:57 sam Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <errno.h>                                                 /* ENOMEM */
  28 #include <signal.h>                                      /* SIGUSR1, SIGUSR2 */
  29 #include <stdlib.h>                                                /* free() */
  30 #include <string.h>                                            /* strerror() */
  31 #include <fcntl.h>                                                 /* open() */
  32 #include <unistd.h>                                               /* close() */
  33
  34 #include <termios.h>                                       /* struct termios */
  35 #include <sys/ioctl.h>
  36 #include <sys/mman.h>                                              /* mmap() */
  37
  38 #include <linux/fb.h>
  39 #include <linux/vt.h>                                                /* VT_* */
  40 #include <linux/kd.h>                                                 /* KD* */
  41
  42 #include <videolan/vlc.h>
  43
  44 #include "video.h"
  45 #include "video_output.h"
  46
  47 /*****************************************************************************
  48  * Capabilities defined in the other files.
  49  *****************************************************************************/
  50 static void vout_getfunctions( function_list_t * p_function_list );
  51
  52 static int  vout_Probe     ( probedata_t *p_data );
  53 static int  vout_Create    ( vout_thread_t * );
  54 static void vout_Destroy   ( vout_thread_t * );
  55 static void vout_Render    ( vout_thread_t *, picture_t * );
  56 static void vout_Display   ( vout_thread_t *, picture_t * );
  57 static int  vout_Manage    ( vout_thread_t * );
  58 static int  vout_Init      ( vout_thread_t * );
  59 static void vout_End       ( vout_thread_t * );
  60
  61 static int  OpenDisplay    ( vout_thread_t * );
  62 static void CloseDisplay   ( vout_thread_t * );
  63 static void SwitchDisplay  ( int i_signal );
  64 static void TextMode       ( int i_tty );
  65 static void GfxMode        ( int i_tty );
  66
  67 /*****************************************************************************
  68  * Building configuration tree
  69  *****************************************************************************/
  70 MODULE_CONFIG_START
  71 MODULE_CONFIG_STOP
  72
  73 MODULE_INIT_START
  74     SET_DESCRIPTION( "Linux console framebuffer module" )
  75     ADD_CAPABILITY( VOUT, 30 )
  76     ADD_SHORTCUT( "fb" )
  77 MODULE_INIT_STOP
  78
  79 MODULE_ACTIVATE_START
  80     vout_getfunctions( &p_module->p_functions->vout );
  81 MODULE_ACTIVATE_STOP
  82
  83 MODULE_DEACTIVATE_START
  84 MODULE_DEACTIVATE_STOP
  85
  86 /*****************************************************************************
  87  * vout_sys_t: video output framebuffer method descriptor
  88  *****************************************************************************
  89  * This structure is part of the video output thread descriptor.
  90  * It describes the FB specific properties of an output thread.
  91  *****************************************************************************/
  92 typedef struct vout_sys_s
  93 {
  94     /* System informations */
  95     int                 i_tty;                          /* tty device handle */
  96     struct termios      old_termios;
  97
  98     /* Original configuration informations */
  99     struct sigaction            sig_usr1;           /* USR1 previous handler */
 100     struct sigaction            sig_usr2;           /* USR2 previous handler */
 101     struct vt_mode              vt_mode;                 /* previous VT mode */
 102
 103     /* Framebuffer information */
 104     int                         i_fd;                       /* device handle */
 105     struct fb_var_screeninfo    old_info;      /* original mode informations */
 106     struct fb_var_screeninfo    var_info;       /* current mode informations */
 107     boolean_t                   b_pan;     /* does device supports panning ? */
 108     struct fb_cmap              fb_cmap;                /* original colormap */
 109     u16                         *p_palette;              /* original palette */
 110
 111     /* Video information */
 112     int i_width;
 113     int i_height;
 114     int i_bytes_per_pixel;
 115
 116     /* Video memory */
 117     byte_t *    p_video;                                      /* base adress */
 118     size_t      i_page_size;                                    /* page size */
 119
 120 } vout_sys_t;
 121
 122 /*****************************************************************************
 123  * Functions exported as capabilities. They are declared as static so that
 124  * we don't pollute the namespace too much.
 125  *****************************************************************************/
 126 static void vout_getfunctions( function_list_t * p_function_list )
 127 {
 128     p_function_list->pf_probe = vout_Probe;
 129     p_function_list->functions.vout.pf_create     = vout_Create;
 130     p_function_list->functions.vout.pf_init       = vout_Init;
 131     p_function_list->functions.vout.pf_end        = vout_End;
 132     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 133     p_function_list->functions.vout.pf_manage     = vout_Manage;
 134     p_function_list->functions.vout.pf_render     = vout_Render;
 135     p_function_list->functions.vout.pf_display    = vout_Display;
 136 }
 137
 138 /*****************************************************************************
 139  * vout_Probe: probe the video driver and return a score
 140  *****************************************************************************
 141  * This function tries to open the framebuffer and returns a score to the
 142  * plugin manager so that it can select the best plugin.
 143  *****************************************************************************/
 144 static int vout_Probe( probedata_t *p_data )
 145 {
 146     int i_fd;
 147
 148     i_fd = open( main_GetPszVariable( VOUT_FB_DEV_VAR,
 149                                       VOUT_FB_DEV_DEFAULT ), O_RDWR );
 150     if( i_fd == -1 )
 151     {
 152         return( 0 );
 153     }
 154     close( i_fd );
 155
 156     return( 30 );
 157 }
 158
 159 /*****************************************************************************
 160  * vout_Create: allocates FB video thread output method
 161  *****************************************************************************
 162  * This function allocates and initializes a FB vout method.
 163  *****************************************************************************/
 164 static int vout_Create( vout_thread_t *p_vout )
 165 {
 166     struct sigaction    sig_tty;                 /* sigaction for tty change */
 167     struct vt_mode      vt_mode;                          /* vt current mode */
 168     struct termios      new_termios;
 169
 170     /* Allocate instance and initialize some members */
 171     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 172     if( p_vout->p_sys == NULL )
 173     {
 174         return( 1 );
 175     };
 176
 177     /* Set tty and fb devices */
 178     p_vout->p_sys->i_tty = 0;           /* 0 == /dev/tty0 == current console */
 179
 180     GfxMode( p_vout->p_sys->i_tty );
 181
 182     /* Set keyboard settings */
 183     if (tcgetattr(0, &p_vout->p_sys->old_termios) == -1)
 184     {
 185         intf_ErrMsg( "intf error: tcgetattr" );
 186     }
 187
 188     if (tcgetattr(0, &new_termios) == -1)
 189     {
 190         intf_ErrMsg( "intf error: tcgetattr" );
 191     }
 192
 193  /* new_termios.c_lflag &= ~ (ICANON | ISIG);
 194     new_termios.c_lflag |= (ECHO | ECHOCTL); */
 195     new_termios.c_lflag &= ~ (ICANON);
 196     new_termios.c_lflag &= ~(ECHO | ECHOCTL);
 197     new_termios.c_iflag = 0;
 198     new_termios.c_cc[VMIN] = 1;
 199     new_termios.c_cc[VTIME] = 0;
 200
 201     if (tcsetattr(0, TCSAFLUSH, &new_termios) == -1)
 202     {
 203         intf_ErrMsg( "intf error: tcsetattr" );
 204     }
 205
 206     ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
 207
 208     /* Set-up tty signal handler to be aware of tty changes */
 209     memset( &sig_tty, 0, sizeof( sig_tty ) );
 210     sig_tty.sa_handler = SwitchDisplay;
 211     sigemptyset( &sig_tty.sa_mask );
 212     if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
 213         sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
 214     {
 215         intf_ErrMsg( "intf error: can't set up signal handler (%s)",
 216                      strerror(errno) );
 217         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 218         TextMode( p_vout->p_sys->i_tty );
 219         free( p_vout->p_sys );
 220         return( 1 );
 221     }
 222
 223     /* Set-up tty according to new signal handler */
 224     if( -1 == ioctl( p_vout->p_sys->i_tty,
 225                      VT_GETMODE, &p_vout->p_sys->vt_mode ) )
 226     {
 227         intf_ErrMsg( "intf error: cant get terminal mode (%s)",
 228                      strerror(errno) );
 229         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 230         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 231         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 232         TextMode( p_vout->p_sys->i_tty );
 233         free( p_vout->p_sys );
 234         return( 1 );
 235     }
 236     memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
 237     vt_mode.mode   = VT_PROCESS;
 238     vt_mode.waitv  = 0;
 239     vt_mode.relsig = SIGUSR1;
 240     vt_mode.acqsig = SIGUSR2;
 241
 242     if( -1 == ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &vt_mode ) )
 243     {
 244         intf_ErrMsg( "intf error: can't set terminal mode (%s)",
 245                      strerror(errno) );
 246         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 247         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 248         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 249         TextMode( p_vout->p_sys->i_tty );
 250         free( p_vout->p_sys );
 251         return( 1 );
 252     }
 253
 254     if( OpenDisplay( p_vout ) )
 255     {
 256         ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 257         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 258         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 259         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 260         TextMode( p_vout->p_sys->i_tty );
 261         free( p_vout->p_sys );
 262         return( 1 );
 263     }
 264
 265     return( 0 );
 266 }
 267
 268 /*****************************************************************************
 269  * vout_Init: initialize framebuffer video thread output method
 270  *****************************************************************************/
 271 static int vout_Init( vout_thread_t *p_vout )
 272 {
 273     int i_index;
 274     picture_t *p_pic;
 275
 276     I_OUTPUTPICTURES = 0;
 277
 278     /* Initialize the output structure: RGB with square pixels, whatever
 279      * the input format is, since it's the only format we know */
 280     switch( p_vout->p_sys->var_info.bits_per_pixel )
 281     {
 282         case 8: /* FIXME: set the palette */
 283             p_vout->output.i_chroma = FOURCC_BI_RGB; break;
 284         case 15:
 285             p_vout->output.i_chroma = FOURCC_RV15; break;
 286         case 16:
 287             p_vout->output.i_chroma = FOURCC_RV16; break;
 288         case 24:
 289             p_vout->output.i_chroma = FOURCC_BI_BITFIELDS; break;
 290         case 32:
 291             p_vout->output.i_chroma = FOURCC_BI_BITFIELDS; break;
 292         default:
 293             intf_ErrMsg( "vout error: unknown screen depth" );
 294             return 0;
 295     }
 296
 297     p_vout->output.i_width = p_vout->p_sys->i_width;
 298     p_vout->output.i_height = p_vout->p_sys->i_height;
 299
 300     /* Assume we have square pixels */
 301     p_vout->output.i_aspect = p_vout->p_sys->i_width
 302                                * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
 303
 304     /* Clear the screen */
 305     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 306
 307     /* Try to initialize 1 direct buffer */
 308     p_pic = NULL;
 309
 310     /* Find an empty picture slot */
 311     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 312     {
 313         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 314         {
 315             p_pic = p_vout->p_picture + i_index;
 316             break;
 317         }
 318     }
 319
 320     /* Allocate the picture */
 321     if( p_pic == NULL )
 322     {
 323         return 0;
 324     }
 325
 326     /* We know the chroma, allocate a buffer which will be used
 327      * directly by the decoder */
 328     p_pic->p->p_pixels = p_vout->p_sys->p_video;
 329     p_pic->p->i_pixel_bytes = p_vout->p_sys->i_bytes_per_pixel;
 330     p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
 331
 332     if( p_vout->p_sys->var_info.xres_virtual )
 333     {
 334         p_pic->p->b_margin = 1;
 335         p_pic->p->b_hidden = 1;
 336         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
 337                              * p_vout->p_sys->i_bytes_per_pixel;
 338         p_pic->p->i_visible_bytes = p_vout->p_sys->var_info.xres
 339                                      * p_vout->p_sys->i_bytes_per_pixel;
 340     }
 341     else
 342     {
 343         p_pic->p->b_margin = 0;
 344         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
 345                              * p_vout->p_sys->i_bytes_per_pixel;
 346     }
 347
 348     /* Only useful for p_vout->p_sys->var_info.bits_per_pixel != 8 */
 349     p_pic->p->i_red_mask = ( (1 << p_vout->p_sys->var_info.red.length) - 1 )
 350                              << p_vout->p_sys->var_info.red.offset;
 351     p_pic->p->i_green_mask = ( (1 << p_vout->p_sys->var_info.green.length) - 1 )
 352                                << p_vout->p_sys->var_info.green.offset;
 353     p_pic->p->i_blue_mask = ( (1 << p_vout->p_sys->var_info.blue.length) - 1 )
 354                               << p_vout->p_sys->var_info.blue.offset;
 355
 356     p_pic->i_planes = 1;
 357
 358     p_pic->i_status = DESTROYED_PICTURE;
 359     p_pic->i_type   = DIRECT_PICTURE;
 360
 361     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 362
 363     I_OUTPUTPICTURES++;
 364
 365     return( 0 );
 366 }
 367
 368 /*****************************************************************************
 369  * vout_End: terminate framebuffer video thread output method
 370  *****************************************************************************/
 371 static void vout_End( vout_thread_t *p_vout )
 372 {
 373     /* Clear the screen */
 374     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 375 }
 376
 377 /*****************************************************************************
 378  * vout_Destroy: destroy FB video thread output method
 379  *****************************************************************************
 380  * Terminate an output method created by vout_CreateOutputMethod
 381  *****************************************************************************/
 382 static void vout_Destroy( vout_thread_t *p_vout )
 383 {
 384     CloseDisplay( p_vout );
 385
 386     /* Reset the terminal */
 387     ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 388
 389     /* Remove signal handlers */
 390     sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 391     sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 392
 393     /* Reset the keyboard state */
 394     tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
 395
 396     /* Return to text mode */
 397     TextMode( p_vout->p_sys->i_tty );
 398
 399     /* Destroy structure */
 400     free( p_vout->p_sys );
 401 }
 402
 403 /*****************************************************************************
 404  * vout_Manage: handle FB events
 405  *****************************************************************************
 406  * This function should be called regularly by video output thread. It manages
 407  * console events. It returns a non null value on error.
 408  *****************************************************************************/
 409 static int vout_Manage( vout_thread_t *p_vout )
 410 {
 411 #if 0
 412     u8 buf;
 413
 414     if ( read(0, &buf, 1) == 1)
 415     {
 416         switch( buf )
 417         {
 418         case 'q':
 419             p_main->p_intf->b_die = 1;
 420             break;
 421
 422         default:
 423             break;
 424         }
 425     }
 426 #endif
 427
 428     /*
 429      * Size change
 430      */
 431     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 432     {
 433         intf_WarnMsg( 3, "vout: reinitializing framebuffer screen" );
 434         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 435
 436         /* Destroy XImages to change their size */
 437         vout_End( p_vout );
 438
 439         /* Recreate XImages. If SysInit failed, the thread can't go on. */
 440         if( vout_Init( p_vout ) )
 441         {
 442             intf_ErrMsg("error: cannot reinit framebuffer screen" );
 443             return( 1 );
 444         }
 445
 446         /* Clear screen */
 447         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 448
 449 #if 0
 450         /* Tell the video output thread that it will need to rebuild YUV
 451          * tables. This is needed since conversion buffer size may have changed */
 452         p_vout->i_changes |= VOUT_YUV_CHANGE;
 453 #endif
 454     }
 455
 456     return 0;
 457 }
 458
 459 /*****************************************************************************
 460  * vout_Render: renders previously calculated output
 461  *****************************************************************************/
 462 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 463 {
 464     ;
 465 }
 466
 467 /*****************************************************************************
 468  * vout_Display: displays previously rendered output
 469  *****************************************************************************
 470  * This function send the currently rendered image to FB image, waits until
 471  * it is displayed and switch the two rendering buffers, preparing next frame.
 472  *****************************************************************************/
 473 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 474 {
 475     /* swap the two Y offsets if the drivers supports panning */
 476     if( p_vout->p_sys->b_pan )
 477     {
 478         p_vout->p_sys->var_info.yoffset = 0;
 479         //p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres;
 480
 481         /* the X offset should be 0, but who knows ...
 482          * some other app might have played with the framebuffer */
 483         p_vout->p_sys->var_info.xoffset = 0;
 484
 485         ioctl( p_vout->p_sys->i_fd,
 486                FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
 487     }
 488 }
 489
 490 #if 0
 491 static void vout_SetPalette( p_vout_thread_t p_vout,
 492                              u16 *red, u16 *green, u16 *blue, u16 *transp )
 493 {
 494     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
 495
 496     ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
 497 }
 498 #endif
 499
 500 /* following functions are local */
 501
 502 /*****************************************************************************
 503  * OpenDisplay: initialize framebuffer
 504  *****************************************************************************/
 505 static int OpenDisplay( vout_thread_t *p_vout )
 506 {
 507     char *psz_device;                             /* framebuffer device path */
 508     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
 509
 510     /* Open framebuffer device */
 511     psz_device = main_GetPszVariable( VOUT_FB_DEV_VAR, VOUT_FB_DEV_DEFAULT );
 512     p_vout->p_sys->i_fd = open( psz_device, O_RDWR);
 513     if( p_vout->p_sys->i_fd == -1 )
 514     {
 515         intf_ErrMsg("vout error: can't open %s (%s)", psz_device, strerror(errno) );
 516         return( 1 );
 517     }
 518
 519     /* Get framebuffer device informations */
 520     if( ioctl( p_vout->p_sys->i_fd,
 521                FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 522     {
 523         intf_ErrMsg("vout error: can't get fb info (%s)", strerror(errno) );
 524         close( p_vout->p_sys->i_fd );
 525         return( 1 );
 526     }
 527
 528     if( ioctl( p_vout->p_sys->i_fd,
 529                FBIOGET_VSCREENINFO, &p_vout->p_sys->old_info ) )
 530     {
 531         intf_ErrMsg("vout error: can't get 2nd fb info (%s)", strerror(errno) );
 532         close( p_vout->p_sys->i_fd );
 533         return( 1 );
 534     }
 535
 536     /* Set some attributes */
 537     p_vout->p_sys->var_info.activate = FB_ACTIVATE_NXTOPEN;
 538     p_vout->p_sys->var_info.xoffset =  0;
 539     p_vout->p_sys->var_info.yoffset =  0;
 540
 541     if( ioctl( p_vout->p_sys->i_fd,
 542                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info ) )
 543     {
 544         intf_ErrMsg(" vout error: can't set fb info (%s)", strerror(errno) );
 545         close( p_vout->p_sys->i_fd );
 546         return( 1 );
 547     }
 548
 549     /* Get some informations again, in the definitive configuration */
 550     if( ioctl( p_vout->p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
 551          || ioctl( p_vout->p_sys->i_fd,
 552                    FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 553     {
 554         intf_ErrMsg( "vout error: can't get additional fb info (%s)",
 555                      strerror(errno) );
 556
 557         /* Restore fb config */
 558         ioctl( p_vout->p_sys->i_fd,
 559                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 560
 561         close( p_vout->p_sys->i_fd );
 562         return( 1 );
 563     }
 564
 565     /* FIXME: if the image is full-size, it gets cropped on the left
 566      * because of the xres / xres_virtual slight difference */
 567     intf_WarnMsg( 3, "vout: %ix%i (virtual %ix%i)",
 568                   p_vout->p_sys->var_info.xres, p_vout->p_sys->var_info.yres,
 569                   p_vout->p_sys->var_info.xres_virtual,
 570                   p_vout->p_sys->var_info.yres_virtual );
 571
 572     p_vout->p_sys->i_height = p_vout->p_sys->var_info.yres;
 573     p_vout->p_sys->i_width  = p_vout->p_sys->var_info.xres_virtual
 574                                ? p_vout->p_sys->var_info.xres_virtual
 575                                : p_vout->p_sys->var_info.xres;
 576
 577     p_vout->p_sys->p_palette = NULL;
 578     p_vout->p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
 579
 580     switch( p_vout->p_sys->var_info.bits_per_pixel )
 581     {
 582     case 8:
 583         p_vout->p_sys->p_palette = malloc( 8 * 256 * sizeof( u16 ) );
 584         p_vout->p_sys->fb_cmap.start = 0;
 585         p_vout->p_sys->fb_cmap.len = 256;
 586         p_vout->p_sys->fb_cmap.red = p_vout->p_sys->p_palette;
 587         p_vout->p_sys->fb_cmap.green = p_vout->p_sys->p_palette + 256 * sizeof( u16 );
 588         p_vout->p_sys->fb_cmap.blue = p_vout->p_sys->p_palette + 2 * 256 * sizeof( u16 );
 589         p_vout->p_sys->fb_cmap.transp = p_vout->p_sys->p_palette + 3 * 256 * sizeof( u16 );
 590
 591         /* Save the colormap */
 592         ioctl( p_vout->p_sys->i_fd, FBIOGETCMAP, &p_vout->p_sys->fb_cmap );
 593
 594         p_vout->p_sys->i_bytes_per_pixel = 1;
 595         break;
 596
 597     case 15:
 598     case 16:
 599         p_vout->p_sys->i_bytes_per_pixel = 2;
 600         break;
 601
 602     case 24:
 603         p_vout->p_sys->i_bytes_per_pixel = 3;
 604         break;
 605
 606     case 32:
 607         p_vout->p_sys->i_bytes_per_pixel = 4;
 608         break;
 609
 610     default:
 611         intf_ErrMsg( "vout error: screen depth %d is not supported",
 612                      p_vout->p_sys->var_info.bits_per_pixel );
 613
 614         /* Restore fb config */
 615         ioctl( p_vout->p_sys->i_fd,
 616                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 617
 618         close( p_vout->p_sys->i_fd );
 619         return 1;
 620     }
 621
 622     p_vout->p_sys->i_page_size = p_vout->p_sys->i_width *
 623                 p_vout->p_sys->i_height * p_vout->p_sys->i_bytes_per_pixel;
 624
 625     /* Map a framebuffer at the beginning */
 626     p_vout->p_sys->p_video = mmap( 0, p_vout->p_sys->i_page_size,
 627                                    PROT_READ | PROT_WRITE, MAP_SHARED,
 628                                    p_vout->p_sys->i_fd, 0 );
 629
 630     if( p_vout->p_sys->p_video == ((void*)-1) )
 631     {
 632         intf_ErrMsg( "vout error: can't map video memory (%s)",
 633                      strerror(errno) );
 634
 635         if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 636         {
 637             free( p_vout->p_sys->p_palette );
 638         }
 639
 640         /* Restore fb config */
 641         ioctl( p_vout->p_sys->i_fd,
 642                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 643
 644         close( p_vout->p_sys->i_fd );
 645         return( 1 );
 646     }
 647
 648     intf_WarnMsg( 4, "vout: framebuffer type=%d, visual=%d, ypanstep=%d, "
 649                      "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
 650                      fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
 651     return( 0 );
 652 }
 653
 654 /*****************************************************************************
 655  * CloseDisplay: terminate FB video thread output method
 656  *****************************************************************************/
 657 static void CloseDisplay( vout_thread_t *p_vout )
 658 {
 659     /* Clear display */
 660     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 661
 662     /* Restore palette */
 663     if( p_vout->p_sys->var_info.bits_per_pixel == 8 );
 664     {
 665         ioctl( p_vout->p_sys->i_fd,
 666                FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
 667         free( p_vout->p_sys->p_palette );
 668     }
 669
 670     /* Restore fb config */
 671     ioctl( p_vout->p_sys->i_fd,
 672            FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 673
 674     /* Close fb */
 675     close( p_vout->p_sys->i_fd );
 676 }
 677
 678 /*****************************************************************************
 679  * SwitchDisplay: VT change signal handler
 680  *****************************************************************************
 681  * This function activates or deactivates the output of the thread. It is
 682  * called by the VT driver, on terminal change.
 683  *****************************************************************************/
 684 static void SwitchDisplay(int i_signal)
 685 {
 686 #if 0
 687     vout_thread_t *p_vout;
 688
 689     vlc_mutex_lock( &p_vout_bank->lock );
 690
 691     /* XXX: only test the first video output */
 692     if( p_vout_bank->i_count )
 693     {
 694         p_vout = p_vout_bank->pp_vout[0];
 695
 696         switch( i_signal )
 697         {
 698         case SIGUSR1:                                /* vt has been released */
 699             p_vout->b_active = 0;
 700             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, 1 );
 701             break;
 702         case SIGUSR2:                                /* vt has been acquired */
 703             p_vout->b_active = 1;
 704             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
 705             /* handle blanking */
 706             vlc_mutex_lock( &p_vout->change_lock );
 707             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 708             vlc_mutex_unlock( &p_vout->change_lock );
 709             break;
 710         }
 711     }
 712
 713     vlc_mutex_unlock( &p_vout_bank->lock );
 714 #endif
 715 }
 716
 717 /*****************************************************************************
 718  * TextMode and GfxMode : switch tty to text/graphic mode
 719  *****************************************************************************
 720  * These functions toggle the tty mode.
 721  *****************************************************************************/
 722 static void TextMode( int i_tty )
 723 {
 724     /* return to text mode */
 725     if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
 726     {
 727         intf_ErrMsg( "intf error: failed ioctl KDSETMODE KD_TEXT" );
 728     }
 729 }
 730
 731 static void GfxMode( int i_tty )
 732 {
 733     /* switch to graphic mode */
 734     if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
 735     {
 736         intf_ErrMsg( "intf error: failed ioctl KDSETMODE KD_GRAPHICS" );
 737     }
 738 }
 739