git.sesse.net Git - vlc/blob - modules/video_output/fb.c

   1 /*****************************************************************************
   2  * fb.c : framebuffer plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2001 the VideoLAN team
   5  * $Id$
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, 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 <vlc/vlc.h>
  43 #include <vlc_vout.h>
  44
  45 /*****************************************************************************
  46  * Local prototypes
  47  *****************************************************************************/
  48 static int  Create    ( vlc_object_t * );
  49 static void Destroy   ( vlc_object_t * );
  50
  51 static int  Init      ( vout_thread_t * );
  52 static void End       ( vout_thread_t * );
  53 static int  Manage    ( vout_thread_t * );
  54 static void Display   ( vout_thread_t *, picture_t * );
  55
  56 static int  OpenDisplay    ( vout_thread_t * );
  57 static void CloseDisplay   ( vout_thread_t * );
  58 static void SwitchDisplay  ( int i_signal );
  59 static void TextMode       ( int i_tty );
  60 static void GfxMode        ( int i_tty );
  61
  62 /*****************************************************************************
  63  * Module descriptor
  64  *****************************************************************************/
  65 #define FB_DEV_VAR "fbdev"
  66
  67 #define DEVICE_TEXT N_("Framebuffer device")
  68 #define DEVICE_LONGTEXT N_( \
  69     "Framebuffer device to use for rendering (usually /dev/fb0).")
  70
  71 vlc_module_begin();
  72     set_shortname( "Framebuffer" );
  73     set_category( CAT_VIDEO );
  74     set_subcategory( SUBCAT_VIDEO_VOUT );
  75     add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
  76               VLC_FALSE );
  77     set_description( _("GNU/Linux console framebuffer video output") );
  78     set_capability( "video output", 30 );
  79     set_callbacks( Create, Destroy );
  80 vlc_module_end();
  81
  82 /*****************************************************************************
  83  * vout_sys_t: video output framebuffer method descriptor
  84  *****************************************************************************
  85  * This structure is part of the video output thread descriptor.
  86  * It describes the FB specific properties of an output thread.
  87  *****************************************************************************/
  88 struct vout_sys_t
  89 {
  90     /* System information */
  91     int                 i_tty;                          /* tty device handle */
  92     struct termios      old_termios;
  93
  94     /* Original configuration information */
  95     struct sigaction            sig_usr1;           /* USR1 previous handler */
  96     struct sigaction            sig_usr2;           /* USR2 previous handler */
  97     struct vt_mode              vt_mode;                 /* previous VT mode */
  98
  99     /* Framebuffer information */
 100     int                         i_fd;                       /* device handle */
 101     struct fb_var_screeninfo    old_info;       /* original mode information */
 102     struct fb_var_screeninfo    var_info;        /* current mode information */
 103     vlc_bool_t                  b_pan;     /* does device supports panning ? */
 104     struct fb_cmap              fb_cmap;                /* original colormap */
 105     uint16_t                    *p_palette;              /* original palette */
 106
 107     /* Video information */
 108     int i_width;
 109     int i_height;
 110     int i_bytes_per_pixel;
 111
 112     /* Video memory */
 113     byte_t *    p_video;                                      /* base adress */
 114     size_t      i_page_size;                                    /* page size */
 115 };
 116
 117 /*****************************************************************************
 118  * Create: allocates FB video thread output method
 119  *****************************************************************************
 120  * This function allocates and initializes a FB vout method.
 121  *****************************************************************************/
 122 static int Create( vlc_object_t *p_this )
 123 {
 124     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 125
 126     struct sigaction    sig_tty;                 /* sigaction for tty change */
 127     struct vt_mode      vt_mode;                          /* vt current mode */
 128     struct termios      new_termios;
 129
 130     /* Allocate instance and initialize some members */
 131     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 132     if( p_vout->p_sys == NULL )
 133     {
 134         return VLC_ENOMEM;
 135     };
 136
 137     p_vout->pf_init = Init;
 138     p_vout->pf_end = End;
 139     p_vout->pf_manage = Manage;
 140     p_vout->pf_render = NULL;
 141     p_vout->pf_display = Display;
 142
 143     /* Set tty and fb devices */
 144     p_vout->p_sys->i_tty = 0;           /* 0 == /dev/tty0 == current console */
 145
 146     GfxMode( p_vout->p_sys->i_tty );
 147
 148     /* Set keyboard settings */
 149     if (tcgetattr(0, &p_vout->p_sys->old_termios) == -1)
 150     {
 151         msg_Err( p_vout, "tcgetattr failed" );
 152     }
 153
 154     if (tcgetattr(0, &new_termios) == -1)
 155     {
 156         msg_Err( p_vout, "tcgetattr failed" );
 157     }
 158
 159  /* new_termios.c_lflag &= ~ (ICANON | ISIG);
 160     new_termios.c_lflag |= (ECHO | ECHOCTL); */
 161     new_termios.c_lflag &= ~ (ICANON);
 162     new_termios.c_lflag &= ~(ECHO | ECHOCTL);
 163     new_termios.c_iflag = 0;
 164     new_termios.c_cc[VMIN] = 1;
 165     new_termios.c_cc[VTIME] = 0;
 166
 167     if (tcsetattr(0, TCSAFLUSH, &new_termios) == -1)
 168     {
 169         msg_Err( p_vout, "tcsetattr failed" );
 170     }
 171
 172     ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
 173
 174     /* Set-up tty signal handler to be aware of tty changes */
 175     memset( &sig_tty, 0, sizeof( sig_tty ) );
 176     sig_tty.sa_handler = SwitchDisplay;
 177     sigemptyset( &sig_tty.sa_mask );
 178     if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
 179         sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
 180     {
 181         msg_Err( p_vout, "cannot set signal handler (%s)", strerror(errno) );
 182         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 183         TextMode( p_vout->p_sys->i_tty );
 184         free( p_vout->p_sys );
 185         return VLC_EGENERIC;
 186     }
 187
 188     /* Set-up tty according to new signal handler */
 189     if( -1 == ioctl( p_vout->p_sys->i_tty,
 190                      VT_GETMODE, &p_vout->p_sys->vt_mode ) )
 191     {
 192         msg_Err( p_vout, "cannot get terminal mode (%s)", strerror(errno) );
 193         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 194         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 195         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 196         TextMode( p_vout->p_sys->i_tty );
 197         free( p_vout->p_sys );
 198         return VLC_EGENERIC;
 199     }
 200     memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
 201     vt_mode.mode   = VT_PROCESS;
 202     vt_mode.waitv  = 0;
 203     vt_mode.relsig = SIGUSR1;
 204     vt_mode.acqsig = SIGUSR2;
 205
 206     if( -1 == ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &vt_mode ) )
 207     {
 208         msg_Err( p_vout, "cannot set terminal mode (%s)", strerror(errno) );
 209         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 210         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 211         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 212         TextMode( p_vout->p_sys->i_tty );
 213         free( p_vout->p_sys );
 214         return VLC_EGENERIC;
 215     }
 216
 217     if( OpenDisplay( p_vout ) )
 218     {
 219         ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 220         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 221         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 222         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 223         TextMode( p_vout->p_sys->i_tty );
 224         free( p_vout->p_sys );
 225         return VLC_EGENERIC;
 226     }
 227
 228     return VLC_SUCCESS;
 229 }
 230
 231 /*****************************************************************************
 232  * Init: initialize framebuffer video thread output method
 233  *****************************************************************************/
 234 static int Init( vout_thread_t *p_vout )
 235 {
 236     int i_index;
 237     picture_t *p_pic;
 238
 239     I_OUTPUTPICTURES = 0;
 240
 241     /* Initialize the output structure: RGB with square pixels, whatever
 242      * the input format is, since it's the only format we know */
 243     switch( p_vout->p_sys->var_info.bits_per_pixel )
 244     {
 245         case 8: /* FIXME: set the palette */
 246             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
 247         case 15:
 248             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
 249         case 16:
 250             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
 251         case 24:
 252             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
 253         case 32:
 254             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
 255         default:
 256             msg_Err( p_vout, "unknown screen depth %i",
 257                      p_vout->p_sys->var_info.bits_per_pixel );
 258             return VLC_EGENERIC;
 259     }
 260
 261     /* Only useful for p_vout->p_sys->var_info.bits_per_pixel != 8 */
 262     p_vout->output.i_rmask = ( (1 << p_vout->p_sys->var_info.red.length) - 1 )
 263                      << p_vout->p_sys->var_info.red.offset;
 264     p_vout->output.i_gmask = ( (1 << p_vout->p_sys->var_info.green.length) - 1 )
 265                      << p_vout->p_sys->var_info.green.offset;
 266     p_vout->output.i_bmask = ( (1 << p_vout->p_sys->var_info.blue.length) - 1 )
 267                      << p_vout->p_sys->var_info.blue.offset;
 268
 269     p_vout->output.i_width = p_vout->p_sys->i_width;
 270     p_vout->output.i_height = p_vout->p_sys->i_height;
 271
 272     /* Assume we have square pixels */
 273     p_vout->output.i_aspect = p_vout->p_sys->i_width
 274                                * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
 275
 276     /* Clear the screen */
 277     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 278
 279     /* Try to initialize 1 direct buffer */
 280     p_pic = NULL;
 281
 282     /* Find an empty picture slot */
 283     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 284     {
 285         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 286         {
 287             p_pic = p_vout->p_picture + i_index;
 288             break;
 289         }
 290     }
 291
 292     /* Allocate the picture */
 293     if( p_pic == NULL )
 294     {
 295         return VLC_EGENERIC;
 296     }
 297
 298     /* We know the chroma, allocate a buffer which will be used
 299      * directly by the decoder */
 300     p_pic->p->p_pixels = p_vout->p_sys->p_video;
 301     p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
 302     p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
 303     p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
 304
 305     if( p_vout->p_sys->var_info.xres_virtual )
 306     {
 307         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
 308                              * p_vout->p_sys->i_bytes_per_pixel;
 309     }
 310     else
 311     {
 312         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
 313                              * p_vout->p_sys->i_bytes_per_pixel;
 314     }
 315
 316     p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
 317                                  * p_vout->p_sys->i_bytes_per_pixel;
 318
 319     p_pic->i_planes = 1;
 320
 321     p_pic->i_status = DESTROYED_PICTURE;
 322     p_pic->i_type   = DIRECT_PICTURE;
 323
 324     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 325
 326     I_OUTPUTPICTURES++;
 327
 328     return VLC_SUCCESS;
 329 }
 330
 331 /*****************************************************************************
 332  * End: terminate framebuffer video thread output method
 333  *****************************************************************************/
 334 static void End( vout_thread_t *p_vout )
 335 {
 336     /* Clear the screen */
 337     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 338 }
 339
 340 /*****************************************************************************
 341  * Destroy: destroy FB video thread output method
 342  *****************************************************************************
 343  * Terminate an output method created by Create
 344  *****************************************************************************/
 345 static void Destroy( vlc_object_t *p_this )
 346 {
 347     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 348
 349     CloseDisplay( p_vout );
 350
 351     /* Reset the terminal */
 352     ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 353
 354     /* Remove signal handlers */
 355     sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 356     sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 357
 358     /* Reset the keyboard state */
 359     tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
 360
 361     /* Return to text mode */
 362     TextMode( p_vout->p_sys->i_tty );
 363
 364     /* Destroy structure */
 365     free( p_vout->p_sys );
 366 }
 367
 368 /*****************************************************************************
 369  * Manage: handle FB events
 370  *****************************************************************************
 371  * This function should be called regularly by video output thread. It manages
 372  * console events. It returns a non null value on error.
 373  *****************************************************************************/
 374 static int Manage( vout_thread_t *p_vout )
 375 {
 376 #if 0
 377     uint8_t buf;
 378
 379     if ( read(0, &buf, 1) == 1)
 380     {
 381         switch( buf )
 382         {
 383         case 'q':
 384             vlc_object_kill( p_vout->p_libvlc );
 385             break;
 386
 387         default:
 388             break;
 389         }
 390     }
 391 #endif
 392
 393     /*
 394      * Size change
 395      */
 396     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 397     {
 398         msg_Dbg( p_vout, "reinitializing framebuffer screen" );
 399         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 400
 401         /* Destroy XImages to change their size */
 402         End( p_vout );
 403
 404         /* Recreate XImages. If SysInit failed, the thread can't go on. */
 405         if( Init( p_vout ) )
 406         {
 407             msg_Err( p_vout, "cannot reinit framebuffer screen" );
 408             return VLC_EGENERIC;
 409         }
 410
 411         /* Clear screen */
 412         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 413
 414 #if 0
 415         /* Tell the video output thread that it will need to rebuild YUV
 416          * tables. This is needed since conversion buffer size may have changed */
 417         p_vout->i_changes |= VOUT_YUV_CHANGE;
 418 #endif
 419     }
 420
 421     return VLC_SUCCESS;
 422 }
 423
 424 /*****************************************************************************
 425  * Display: displays previously rendered output
 426  *****************************************************************************
 427  * This function send the currently rendered image to FB image, waits until
 428  * it is displayed and switch the two rendering buffers, preparing next frame.
 429  *****************************************************************************/
 430 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 431 {
 432 static int panned=0;
 433     /* swap the two Y offsets if the drivers supports panning */
 434     if( p_vout->p_sys->b_pan )
 435     {
 436         p_vout->p_sys->var_info.yoffset = 0;
 437         /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
 438
 439         /* the X offset should be 0, but who knows ...
 440          * some other app might have played with the framebuffer */
 441         p_vout->p_sys->var_info.xoffset = 0;
 442
 443         if( panned < 0 )
 444         {
 445                 ioctl( p_vout->p_sys->i_fd,
 446                        FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
 447                 panned++;
 448         }
 449     }
 450 }
 451
 452 #if 0
 453 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
 454                                                uint16_t *blue, uint16_t *transp )
 455 {
 456     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
 457
 458     ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
 459 }
 460 #endif
 461
 462 /* following functions are local */
 463
 464 /*****************************************************************************
 465  * OpenDisplay: initialize framebuffer
 466  *****************************************************************************/
 467 static int OpenDisplay( vout_thread_t *p_vout )
 468 {
 469     char *psz_device;                             /* framebuffer device path */
 470     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
 471
 472     /* Open framebuffer device */
 473     if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
 474     {
 475         msg_Err( p_vout, "don't know which fb device to open" );
 476         return VLC_EGENERIC;
 477     }
 478
 479     p_vout->p_sys->i_fd = open( psz_device, O_RDWR);
 480
 481     if( p_vout->p_sys->i_fd == -1 )
 482     {
 483         msg_Err( p_vout, "cannot open %s (%s)", psz_device, strerror(errno) );
 484         free( psz_device );
 485         return VLC_EGENERIC;
 486     }
 487     free( psz_device );
 488
 489     /* Get framebuffer device information */
 490     if( ioctl( p_vout->p_sys->i_fd,
 491                FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 492     {
 493         msg_Err( p_vout, "cannot get fb info (%s)", strerror(errno) );
 494         close( p_vout->p_sys->i_fd );
 495         return VLC_EGENERIC;
 496     }
 497
 498     memcpy( &p_vout->p_sys->old_info, &p_vout->p_sys->var_info,
 499             sizeof( struct fb_var_screeninfo ) );
 500
 501     /* Set some attributes */
 502     p_vout->p_sys->var_info.activate = FB_ACTIVATE_NXTOPEN;
 503     p_vout->p_sys->var_info.xoffset =  0;
 504     p_vout->p_sys->var_info.yoffset =  0;
 505
 506     if( ioctl( p_vout->p_sys->i_fd,
 507                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info ) )
 508     {
 509         msg_Err( p_vout, "cannot set fb info (%s)", strerror(errno) );
 510         close( p_vout->p_sys->i_fd );
 511         return VLC_EGENERIC;
 512     }
 513
 514     /* Get some information again, in the definitive configuration */
 515     if( ioctl( p_vout->p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
 516          || ioctl( p_vout->p_sys->i_fd,
 517                    FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 518     {
 519         msg_Err( p_vout, "cannot get additional fb info (%s)",
 520                           strerror(errno) );
 521
 522         /* Restore fb config */
 523         ioctl( p_vout->p_sys->i_fd,
 524                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 525
 526         close( p_vout->p_sys->i_fd );
 527         return VLC_EGENERIC;
 528     }
 529
 530     /* FIXME: if the image is full-size, it gets cropped on the left
 531      * because of the xres / xres_virtual slight difference */
 532     msg_Dbg( p_vout, "%ix%i (virtual %ix%i)",
 533              p_vout->p_sys->var_info.xres, p_vout->p_sys->var_info.yres,
 534              p_vout->p_sys->var_info.xres_virtual,
 535              p_vout->p_sys->var_info.yres_virtual );
 536
 537     p_vout->p_sys->i_height = p_vout->p_sys->var_info.yres;
 538     p_vout->p_sys->i_width  = p_vout->p_sys->var_info.xres_virtual
 539                                ? p_vout->p_sys->var_info.xres_virtual
 540                                : p_vout->p_sys->var_info.xres;
 541
 542     p_vout->p_sys->p_palette = NULL;
 543     p_vout->p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
 544
 545     switch( p_vout->p_sys->var_info.bits_per_pixel )
 546     {
 547     case 8:
 548         p_vout->p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
 549         p_vout->p_sys->fb_cmap.start = 0;
 550         p_vout->p_sys->fb_cmap.len = 256;
 551         p_vout->p_sys->fb_cmap.red = p_vout->p_sys->p_palette;
 552         p_vout->p_sys->fb_cmap.green = p_vout->p_sys->p_palette + 256 * sizeof( uint16_t );
 553         p_vout->p_sys->fb_cmap.blue = p_vout->p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
 554         p_vout->p_sys->fb_cmap.transp = p_vout->p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
 555
 556         /* Save the colormap */
 557         ioctl( p_vout->p_sys->i_fd, FBIOGETCMAP, &p_vout->p_sys->fb_cmap );
 558
 559         p_vout->p_sys->i_bytes_per_pixel = 1;
 560         break;
 561
 562     case 15:
 563     case 16:
 564         p_vout->p_sys->i_bytes_per_pixel = 2;
 565         break;
 566
 567     case 24:
 568         p_vout->p_sys->i_bytes_per_pixel = 3;
 569         break;
 570
 571     case 32:
 572         p_vout->p_sys->i_bytes_per_pixel = 4;
 573         break;
 574
 575     default:
 576         msg_Err( p_vout, "screen depth %d is not supported",
 577                          p_vout->p_sys->var_info.bits_per_pixel );
 578
 579         /* Restore fb config */
 580         ioctl( p_vout->p_sys->i_fd,
 581                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 582
 583         close( p_vout->p_sys->i_fd );
 584         return VLC_EGENERIC;
 585     }
 586
 587     p_vout->p_sys->i_page_size = p_vout->p_sys->i_width *
 588                 p_vout->p_sys->i_height * p_vout->p_sys->i_bytes_per_pixel;
 589
 590     /* Map a framebuffer at the beginning */
 591     p_vout->p_sys->p_video = mmap( 0, p_vout->p_sys->i_page_size,
 592                                    PROT_READ | PROT_WRITE, MAP_SHARED,
 593                                    p_vout->p_sys->i_fd, 0 );
 594
 595     if( p_vout->p_sys->p_video == ((void*)-1) )
 596     {
 597         msg_Err( p_vout, "cannot map video memory (%s)", strerror(errno) );
 598
 599         if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 600         {
 601             free( p_vout->p_sys->p_palette );
 602         }
 603
 604         /* Restore fb config */
 605         ioctl( p_vout->p_sys->i_fd,
 606                FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 607
 608         close( p_vout->p_sys->i_fd );
 609         return VLC_EGENERIC;
 610     }
 611
 612     msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
 613              "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
 614              fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
 615     return VLC_SUCCESS;
 616 }
 617
 618 /*****************************************************************************
 619  * CloseDisplay: terminate FB video thread output method
 620  *****************************************************************************/
 621 static void CloseDisplay( vout_thread_t *p_vout )
 622 {
 623     /* Clear display */
 624     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 625
 626     /* Restore palette */
 627     if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 628     {
 629         ioctl( p_vout->p_sys->i_fd,
 630                FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
 631         free( p_vout->p_sys->p_palette );
 632     }
 633
 634     /* Restore fb config */
 635     ioctl( p_vout->p_sys->i_fd,
 636            FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
 637
 638     /* Close fb */
 639     close( p_vout->p_sys->i_fd );
 640 }
 641
 642 /*****************************************************************************
 643  * SwitchDisplay: VT change signal handler
 644  *****************************************************************************
 645  * This function activates or deactivates the output of the thread. It is
 646  * called by the VT driver, on terminal change.
 647  *****************************************************************************/
 648 static void SwitchDisplay(int i_signal)
 649 {
 650 #if 0
 651     vout_thread_t *p_vout;
 652
 653     vlc_mutex_lock( &p_vout_bank->lock );
 654
 655     /* XXX: only test the first video output */
 656     if( p_vout_bank->i_count )
 657     {
 658         p_vout = p_vout_bank->pp_vout[0];
 659
 660         switch( i_signal )
 661         {
 662         case SIGUSR1:                                /* vt has been released */
 663             p_vout->b_active = 0;
 664             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, 1 );
 665             break;
 666         case SIGUSR2:                                /* vt has been acquired */
 667             p_vout->b_active = 1;
 668             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
 669             /* handle blanking */
 670             vlc_mutex_lock( &p_vout->change_lock );
 671             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 672             vlc_mutex_unlock( &p_vout->change_lock );
 673             break;
 674         }
 675     }
 676
 677     vlc_mutex_unlock( &p_vout_bank->lock );
 678 #endif
 679 }
 680
 681 /*****************************************************************************
 682  * TextMode and GfxMode : switch tty to text/graphic mode
 683  *****************************************************************************
 684  * These functions toggle the tty mode.
 685  *****************************************************************************/
 686 static void TextMode( int i_tty )
 687 {
 688     /* return to text mode */
 689     if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
 690     {
 691         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
 692     }
 693 }
 694
 695 static void GfxMode( int i_tty )
 696 {
 697     /* switch to graphic mode */
 698     if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
 699     {
 700         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/
 701     }
 702 }