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 1.18 2002/04/23 14:16:20 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_Create    ( vout_thread_t * );
  53 static void vout_Destroy   ( vout_thread_t * );
  54 static void vout_Render    ( vout_thread_t *, picture_t * );
  55 static void vout_Display   ( vout_thread_t *, picture_t * );
  56 static int  vout_Manage    ( vout_thread_t * );
  57 static int  vout_Init      ( vout_thread_t * );
  58 static void vout_End       ( vout_thread_t * );
  59
  60 static int  OpenDisplay    ( vout_thread_t * );
  61 static void CloseDisplay   ( vout_thread_t * );
  62 static void SwitchDisplay  ( int i_signal );
  63 static void TextMode       ( int i_tty );
  64 static void GfxMode        ( int i_tty );
  65
  66 /*****************************************************************************
  67  * Building configuration tree
  68  *****************************************************************************/
  69 #define FB_DEV_VAR "fbdev"
  70
  71 MODULE_CONFIG_START
  72 ADD_CATEGORY_HINT( N_("Miscellaneous"), NULL )
  73 ADD_STRING  ( FB_DEV_VAR, "/dev/fb0", NULL, N_("framebuffer device"), NULL )
  74 MODULE_CONFIG_STOP
  75
  76 MODULE_INIT_START
  77     SET_DESCRIPTION( _("Linux console framebuffer module") )
  78     ADD_CAPABILITY( VOUT, 30 )
  79     ADD_SHORTCUT( "fb" )
  80 MODULE_INIT_STOP
  81
  82 MODULE_ACTIVATE_START
  83     vout_getfunctions( &p_module->p_functions->vout );
  84 MODULE_ACTIVATE_STOP
  85
  86 MODULE_DEACTIVATE_START
  87 MODULE_DEACTIVATE_STOP
  88
  89 /*****************************************************************************
  90  * vout_sys_t: video output framebuffer method descriptor
  91  *****************************************************************************
  92  * This structure is part of the video output thread descriptor.
  93  * It describes the FB specific properties of an output thread.
  94  *****************************************************************************/
  95 typedef struct vout_sys_s
  96 {
  97     /* System informations */
  98     int                 i_tty;                          /* tty device handle */
  99     struct termios      old_termios;
 100
 101     /* Original configuration informations */
 102     struct sigaction            sig_usr1;           /* USR1 previous handler */
 103     struct sigaction            sig_usr2;           /* USR2 previous handler */
 104     struct vt_mode              vt_mode;                 /* previous VT mode */
 105
 106     /* Framebuffer information */
 107     int                         i_fd;                       /* device handle */
 108     struct fb_var_screeninfo    old_info;      /* original mode informations */
 109     struct fb_var_screeninfo    var_info;       /* current mode informations */
 110     boolean_t                   b_pan;     /* does device supports panning ? */
 111     struct fb_cmap              fb_cmap;                /* original colormap */
 112     u16                         *p_palette;              /* original palette */
 113
 114     /* Video information */
 115     int i_width;
 116     int i_height;
 117     int i_bytes_per_pixel;
 118
 119     /* Video memory */
 120     byte_t *    p_video;                                      /* base adress */
 121     size_t      i_page_size;                                    /* page size */
 122
 123 } vout_sys_t;
 124
 125 /*****************************************************************************
 126  * Functions exported as capabilities. They are declared as static so that
 127  * we don't pollute the namespace too much.
 128  *****************************************************************************/
 129 static void vout_getfunctions( function_list_t * p_function_list )
 130 {
 131     p_function_list->functions.vout.pf_create     = vout_Create;
 132     p_function_list->functions.vout.pf_init       = vout_Init;
 133     p_function_list->functions.vout.pf_end        = vout_End;
 134     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 135     p_function_list->functions.vout.pf_manage     = vout_Manage;
 136     p_function_list->functions.vout.pf_render     = vout_Render;
 137     p_function_list->functions.vout.pf_display    = vout_Display;
 138 }
 139
 140 /*****************************************************************************
 141  * vout_Create: allocates FB video thread output method
 142  *****************************************************************************
 143  * This function allocates and initializes a FB vout method.
 144  *****************************************************************************/
 145 static int vout_Create( vout_thread_t *p_vout )
 146 {
 147     struct sigaction    sig_tty;                 /* sigaction for tty change */
 148     struct vt_mode      vt_mode;                          /* vt current mode */
 149     struct termios      new_termios;
 150
 151     /* Allocate instance and initialize some members */
 152     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 153     if( p_vout->p_sys == NULL )
 154     {
 155         return( 1 );
 156     };
 157
 158     /* Set tty and fb devices */
 159     p_vout->p_sys->i_tty = 0;           /* 0 == /dev/tty0 == current console */
 160
 161     GfxMode( p_vout->p_sys->i_tty );
 162
 163     /* Set keyboard settings */
 164     if (tcgetattr(0, &p_vout->p_sys->old_termios) == -1)
 165     {
 166         intf_ErrMsg( "intf error: tcgetattr" );
 167     }
 168
 169     if (tcgetattr(0, &new_termios) == -1)
 170     {
 171         intf_ErrMsg( "intf error: tcgetattr" );
 172     }
 173
 174  /* new_termios.c_lflag &= ~ (ICANON | ISIG);
 175     new_termios.c_lflag |= (ECHO | ECHOCTL); */
 176     new_termios.c_lflag &= ~ (ICANON);
 177     new_termios.c_lflag &= ~(ECHO | ECHOCTL);
 178     new_termios.c_iflag = 0;
 179     new_termios.c_cc[VMIN] = 1;
 180     new_termios.c_cc[VTIME] = 0;
 181
 182     if (tcsetattr(0, TCSAFLUSH, &new_termios) == -1)
 183     {
 184         intf_ErrMsg( "intf error: tcsetattr" );
 185     }
 186
 187     ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
 188
 189     /* Set-up tty signal handler to be aware of tty changes */
 190     memset( &sig_tty, 0, sizeof( sig_tty ) );
 191     sig_tty.sa_handler = SwitchDisplay;
 192     sigemptyset( &sig_tty.sa_mask );
 193     if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
 194         sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
 195     {
 196         intf_ErrMsg( "intf error: can't set up signal handler (%s)",
 197                      strerror(errno) );
 198         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 199         TextMode( p_vout->p_sys->i_tty );
 200         free( p_vout->p_sys );
 201         return( 1 );
 202     }
 203
 204     /* Set-up tty according to new signal handler */
 205     if( -1 == ioctl( p_vout->p_sys->i_tty,
 206                      VT_GETMODE, &p_vout->p_sys->vt_mode ) )
 207     {
 208         intf_ErrMsg( "intf error: cant get terminal mode (%s)",
 209                      strerror(errno) );
 210         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 211         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 212         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 213         TextMode( p_vout->p_sys->i_tty );
 214         free( p_vout->p_sys );
 215         return( 1 );
 216     }
 217     memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
 218     vt_mode.mode   = VT_PROCESS;
 219     vt_mode.waitv  = 0;
 220     vt_mode.relsig = SIGUSR1;
 221     vt_mode.acqsig = SIGUSR2;
 222
 223     if( -1 == ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &vt_mode ) )
 224     {
 225         intf_ErrMsg( "intf error: can't set terminal mode (%s)",
 226                      strerror(errno) );
 227         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 228         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 229         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 230         TextMode( p_vout->p_sys->i_tty );
 231         free( p_vout->p_sys );
 232         return( 1 );
 233     }
 234
 235     if( OpenDisplay( p_vout ) )
 236     {
 237         ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 238         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 239         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 240         tcsetattr(0, 0, &p_vout->p_sys->old_termios);
 241         TextMode( p_vout->p_sys->i_tty );
 242         free( p_vout->p_sys );
 243         return( 1 );
 244     }
 245
 246     return( 0 );
 247 }
 248
 249 /*****************************************************************************
 250  * vout_Init: initialize framebuffer video thread output method
 251  *****************************************************************************/
 252 static int vout_Init( vout_thread_t *p_vout )
 253 {
 254     int i_index;
 255     picture_t *p_pic;
 256
 257     I_OUTPUTPICTURES = 0;
 258
 259     /* Initialize the output structure: RGB with square pixels, whatever
 260      * the input format is, since it's the only format we know */
 261     switch( p_vout->p_sys->var_info.bits_per_pixel )
 262     {
 263         case 8: /* FIXME: set the palette */
 264             p_vout->output.i_chroma = FOURCC_RGB2; break;
 265         case 15:
 266             p_vout->output.i_chroma = FOURCC_RV15; break;
 267         case 16:
 268             p_vout->output.i_chroma = FOURCC_RV16; break;
 269         case 24:
 270             p_vout->output.i_chroma = FOURCC_RV24; break;
 271         case 32:
 272             p_vout->output.i_chroma = FOURCC_RV32; break;
 273         default:
 274             intf_ErrMsg( "vout error: unknown screen depth" );
 275             return 0;
 276     }
 277
 278     /* Only useful for p_vout->p_sys->var_info.bits_per_pixel != 8 */
 279     p_vout->output.i_rmask = ( (1 << p_vout->p_sys->var_info.red.length) - 1 )
 280                      << p_vout->p_sys->var_info.red.offset;
 281     p_vout->output.i_gmask = ( (1 << p_vout->p_sys->var_info.green.length) - 1 )
 282                      << p_vout->p_sys->var_info.green.offset;
 283     p_vout->output.i_bmask = ( (1 << p_vout->p_sys->var_info.blue.length) - 1 )
 284                      << p_vout->p_sys->var_info.blue.offset;
 285
 286     p_vout->output.i_width = p_vout->p_sys->i_width;
 287     p_vout->output.i_height = p_vout->p_sys->i_height;
 288
 289     /* Assume we have square pixels */
 290     p_vout->output.i_aspect = p_vout->p_sys->i_width
 291                                * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
 292
 293     /* Clear the screen */
 294     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 295
 296     /* Try to initialize 1 direct buffer */
 297     p_pic = NULL;
 298
 299     /* Find an empty picture slot */
 300     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 301     {
 302         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 303         {
 304             p_pic = p_vout->p_picture + i_index;
 305             break;
 306         }
 307     }
 308
 309     /* Allocate the picture */
 310     if( p_pic == NULL )
 311     {
 312         return 0;
 313     }
 314
 315     /* We know the chroma, allocate a buffer which will be used
 316      * directly by the decoder */
 317     p_pic->p->p_pixels = p_vout->p_sys->p_video;
 318     p_pic->p->i_pixel_bytes = p_vout->p_sys->i_bytes_per_pixel;
 319     p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
 320
 321     if( p_vout->p_sys->var_info.xres_virtual )
 322     {
 323         p_pic->p->b_margin = 1;
 324         p_pic->p->b_hidden = 1;
 325         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
 326                              * p_vout->p_sys->i_bytes_per_pixel;
 327         p_pic->p->i_visible_bytes = p_vout->p_sys->var_info.xres
 328                                      * p_vout->p_sys->i_bytes_per_pixel;
 329     }
 330     else
 331     {
 332         p_pic->p->b_margin = 0;
 333         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
 334                              * p_vout->p_sys->i_bytes_per_pixel;
 335     }
 336
 337     p_pic->i_planes = 1;
 338
 339     p_pic->i_status = DESTROYED_PICTURE;
 340     p_pic->i_type   = DIRECT_PICTURE;
 341
 342     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 343
 344     I_OUTPUTPICTURES++;
 345
 346     return( 0 );
 347 }
 348
 349 /*****************************************************************************
 350  * vout_End: terminate framebuffer video thread output method
 351  *****************************************************************************/
 352 static void vout_End( vout_thread_t *p_vout )
 353 {
 354     /* Clear the screen */
 355     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 356 }
 357
 358 /*****************************************************************************
 359  * vout_Destroy: destroy FB video thread output method
 360  *****************************************************************************
 361  * Terminate an output method created by vout_CreateOutputMethod
 362  *****************************************************************************/
 363 static void vout_Destroy( vout_thread_t *p_vout )
 364 {
 365     CloseDisplay( p_vout );
 366
 367     /* Reset the terminal */
 368     ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
 369
 370     /* Remove signal handlers */
 371     sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
 372     sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
 373
 374     /* Reset the keyboard state */
 375     tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
 376
 377     /* Return to text mode */
 378     TextMode( p_vout->p_sys->i_tty );
 379
 380     /* Destroy structure */
 381     free( p_vout->p_sys );
 382 }
 383
 384 /*****************************************************************************
 385  * vout_Manage: handle FB events
 386  *****************************************************************************
 387  * This function should be called regularly by video output thread. It manages
 388  * console events. It returns a non null value on error.
 389  *****************************************************************************/
 390 static int vout_Manage( vout_thread_t *p_vout )
 391 {
 392 #if 0
 393     u8 buf;
 394
 395     if ( read(0, &buf, 1) == 1)
 396     {
 397         switch( buf )
 398         {
 399         case 'q':
 400             p_main->p_intf->b_die = 1;
 401             break;
 402
 403         default:
 404             break;
 405         }
 406     }
 407 #endif
 408
 409     /*
 410      * Size change
 411      */
 412     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 413     {
 414         intf_WarnMsg( 3, "vout: reinitializing framebuffer screen" );
 415         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 416
 417         /* Destroy XImages to change their size */
 418         vout_End( p_vout );
 419
 420         /* Recreate XImages. If SysInit failed, the thread can't go on. */
 421         if( vout_Init( p_vout ) )
 422         {
 423             intf_ErrMsg("error: cannot reinit framebuffer screen" );
 424             return( 1 );
 425         }
 426
 427         /* Clear screen */
 428         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 429
 430 #if 0
 431         /* Tell the video output thread that it will need to rebuild YUV
 432          * tables. This is needed since conversion buffer size may have changed */
 433         p_vout->i_changes |= VOUT_YUV_CHANGE;
 434 #endif
 435     }
 436
 437     return 0;
 438 }
 439
 440 /*****************************************************************************
 441  * vout_Render: renders previously calculated output
 442  *****************************************************************************/
 443 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 444 {
 445     ;
 446 }
 447
 448 /*****************************************************************************
 449  * vout_Display: displays previously rendered output
 450  *****************************************************************************
 451  * This function send the currently rendered image to FB image, waits until
 452  * it is displayed and switch the two rendering buffers, preparing next frame.
 453  *****************************************************************************/
 454 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 455 {
 456     /* swap the two Y offsets if the drivers supports panning */
 457     if( p_vout->p_sys->b_pan )
 458     {
 459         p_vout->p_sys->var_info.yoffset = 0;
 460         //p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres;
 461
 462         /* the X offset should be 0, but who knows ...
 463          * some other app might have played with the framebuffer */
 464         p_vout->p_sys->var_info.xoffset = 0;
 465
 466         ioctl( p_vout->p_sys->i_fd,
 467                FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
 468     }
 469 }
 470
 471 #if 0
 472 static void vout_SetPalette( p_vout_thread_t p_vout,
 473                              u16 *red, u16 *green, u16 *blue, u16 *transp )
 474 {
 475     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
 476
 477     ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
 478 }
 479 #endif
 480
 481 /* following functions are local */
 482
 483 /*****************************************************************************
 484  * OpenDisplay: initialize framebuffer
 485  *****************************************************************************/
 486 static int OpenDisplay( vout_thread_t *p_vout )
 487 {
 488     char *psz_device;                             /* framebuffer device path */
 489     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
 490
 491     /* Open framebuffer device */
 492     if( !(psz_device = config_GetPszVariable( FB_DEV_VAR )) )
 493     {
 494         intf_ErrMsg( "vout error: don't know which fb device to open" );
 495         return( 1 );
 496     }
 497
 498     p_vout->p_sys->i_fd = open( psz_device, O_RDWR);
 499
 500     if( p_vout->p_sys->i_fd == -1 )
 501     {
 502         intf_ErrMsg("vout error: can't open %s (%s)",
 503                     psz_device, strerror(errno) );
 504         free( psz_device );
 505         return( 1 );
 506     }
 507     free( psz_device );
 508
 509     /* Get framebuffer device informations */
 510     if( ioctl( p_vout->p_sys->i_fd,
 511                FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 512     {
 513         intf_ErrMsg("vout error: can't get fb info (%s)", strerror(errno) );
 514         close( p_vout->p_sys->i_fd );
 515         return( 1 );
 516     }
 517
 518     if( ioctl( p_vout->p_sys->i_fd,
 519                FBIOGET_VSCREENINFO, &p_vout->p_sys->old_info ) )
 520     {
 521         intf_ErrMsg("vout error: can't get 2nd fb info (%s)", strerror(errno) );
 522         close( p_vout->p_sys->i_fd );
 523         return( 1 );
 524     }
 525
 526     /* Set some attributes */
 527     p_vout->p_sys->var_info.activate = FB_ACTIVATE_NXTOPEN;
 528     p_vout->p_sys->var_info.xoffset =  0;
 529     p_vout->p_sys->var_info.yoffset =  0;
 530
 531     if( ioctl( p_vout->p_sys->i_fd,
 532                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info ) )
 533     {
 534         intf_ErrMsg(" vout error: can't set fb info (%s)", strerror(errno) );
 535         close( p_vout->p_sys->i_fd );
 536         return( 1 );
 537     }
 538
 539     /* Get some informations again, in the definitive configuration */
 540     if( ioctl( p_vout->p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
 541          || ioctl( p_vout->p_sys->i_fd,
 542                    FBIOGET_VSCREENINFO, &p_vout->p_sys->var_info ) )
 543     {
 544         intf_ErrMsg( "vout error: can't get additional fb info (%s)",
 545                      strerror(errno) );
 546
 547         /* Restore fb config */
 548         ioctl( p_vout->p_sys->i_fd,
 549                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 550
 551         close( p_vout->p_sys->i_fd );
 552         return( 1 );
 553     }
 554
 555     /* FIXME: if the image is full-size, it gets cropped on the left
 556      * because of the xres / xres_virtual slight difference */
 557     intf_WarnMsg( 3, "vout: %ix%i (virtual %ix%i)",
 558                   p_vout->p_sys->var_info.xres, p_vout->p_sys->var_info.yres,
 559                   p_vout->p_sys->var_info.xres_virtual,
 560                   p_vout->p_sys->var_info.yres_virtual );
 561
 562     p_vout->p_sys->i_height = p_vout->p_sys->var_info.yres;
 563     p_vout->p_sys->i_width  = p_vout->p_sys->var_info.xres_virtual
 564                                ? p_vout->p_sys->var_info.xres_virtual
 565                                : p_vout->p_sys->var_info.xres;
 566
 567     p_vout->p_sys->p_palette = NULL;
 568     p_vout->p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
 569
 570     switch( p_vout->p_sys->var_info.bits_per_pixel )
 571     {
 572     case 8:
 573         p_vout->p_sys->p_palette = malloc( 8 * 256 * sizeof( u16 ) );
 574         p_vout->p_sys->fb_cmap.start = 0;
 575         p_vout->p_sys->fb_cmap.len = 256;
 576         p_vout->p_sys->fb_cmap.red = p_vout->p_sys->p_palette;
 577         p_vout->p_sys->fb_cmap.green = p_vout->p_sys->p_palette + 256 * sizeof( u16 );
 578         p_vout->p_sys->fb_cmap.blue = p_vout->p_sys->p_palette + 2 * 256 * sizeof( u16 );
 579         p_vout->p_sys->fb_cmap.transp = p_vout->p_sys->p_palette + 3 * 256 * sizeof( u16 );
 580
 581         /* Save the colormap */
 582         ioctl( p_vout->p_sys->i_fd, FBIOGETCMAP, &p_vout->p_sys->fb_cmap );
 583
 584         p_vout->p_sys->i_bytes_per_pixel = 1;
 585         break;
 586
 587     case 15:
 588     case 16:
 589         p_vout->p_sys->i_bytes_per_pixel = 2;
 590         break;
 591
 592     case 24:
 593         p_vout->p_sys->i_bytes_per_pixel = 3;
 594         break;
 595
 596     case 32:
 597         p_vout->p_sys->i_bytes_per_pixel = 4;
 598         break;
 599
 600     default:
 601         intf_ErrMsg( "vout error: screen depth %d is not supported",
 602                      p_vout->p_sys->var_info.bits_per_pixel );
 603
 604         /* Restore fb config */
 605         ioctl( p_vout->p_sys->i_fd,
 606                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 607
 608         close( p_vout->p_sys->i_fd );
 609         return 1;
 610     }
 611
 612     p_vout->p_sys->i_page_size = p_vout->p_sys->i_width *
 613                 p_vout->p_sys->i_height * p_vout->p_sys->i_bytes_per_pixel;
 614
 615     /* Map a framebuffer at the beginning */
 616     p_vout->p_sys->p_video = mmap( 0, p_vout->p_sys->i_page_size,
 617                                    PROT_READ | PROT_WRITE, MAP_SHARED,
 618                                    p_vout->p_sys->i_fd, 0 );
 619
 620     if( p_vout->p_sys->p_video == ((void*)-1) )
 621     {
 622         intf_ErrMsg( "vout error: can't map video memory (%s)",
 623                      strerror(errno) );
 624
 625         if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
 626         {
 627             free( p_vout->p_sys->p_palette );
 628         }
 629
 630         /* Restore fb config */
 631         ioctl( p_vout->p_sys->i_fd,
 632                FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 633
 634         close( p_vout->p_sys->i_fd );
 635         return( 1 );
 636     }
 637
 638     intf_WarnMsg( 4, "vout: framebuffer type=%d, visual=%d, ypanstep=%d, "
 639                      "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
 640                      fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
 641     return( 0 );
 642 }
 643
 644 /*****************************************************************************
 645  * CloseDisplay: terminate FB video thread output method
 646  *****************************************************************************/
 647 static void CloseDisplay( vout_thread_t *p_vout )
 648 {
 649     /* Clear display */
 650     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
 651
 652     /* Restore palette */
 653     if( p_vout->p_sys->var_info.bits_per_pixel == 8 );
 654     {
 655         ioctl( p_vout->p_sys->i_fd,
 656                FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
 657         free( p_vout->p_sys->p_palette );
 658     }
 659
 660     /* Restore fb config */
 661     ioctl( p_vout->p_sys->i_fd,
 662            FBIOPUT_VSCREENINFO, &p_vout->p_sys->var_info );
 663
 664     /* Close fb */
 665     close( p_vout->p_sys->i_fd );
 666 }
 667
 668 /*****************************************************************************
 669  * SwitchDisplay: VT change signal handler
 670  *****************************************************************************
 671  * This function activates or deactivates the output of the thread. It is
 672  * called by the VT driver, on terminal change.
 673  *****************************************************************************/
 674 static void SwitchDisplay(int i_signal)
 675 {
 676 #if 0
 677     vout_thread_t *p_vout;
 678
 679     vlc_mutex_lock( &p_vout_bank->lock );
 680
 681     /* XXX: only test the first video output */
 682     if( p_vout_bank->i_count )
 683     {
 684         p_vout = p_vout_bank->pp_vout[0];
 685
 686         switch( i_signal )
 687         {
 688         case SIGUSR1:                                /* vt has been released */
 689             p_vout->b_active = 0;
 690             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, 1 );
 691             break;
 692         case SIGUSR2:                                /* vt has been acquired */
 693             p_vout->b_active = 1;
 694             ioctl( p_vout->p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
 695             /* handle blanking */
 696             vlc_mutex_lock( &p_vout->change_lock );
 697             p_vout->i_changes |= VOUT_SIZE_CHANGE;
 698             vlc_mutex_unlock( &p_vout->change_lock );
 699             break;
 700         }
 701     }
 702
 703     vlc_mutex_unlock( &p_vout_bank->lock );
 704 #endif
 705 }
 706
 707 /*****************************************************************************
 708  * TextMode and GfxMode : switch tty to text/graphic mode
 709  *****************************************************************************
 710  * These functions toggle the tty mode.
 711  *****************************************************************************/
 712 static void TextMode( int i_tty )
 713 {
 714     /* return to text mode */
 715     if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
 716     {
 717         intf_ErrMsg( "intf error: failed ioctl KDSETMODE KD_TEXT" );
 718     }
 719 }
 720
 721 static void GfxMode( int i_tty )
 722 {
 723     /* switch to graphic mode */
 724     if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
 725     {
 726         intf_ErrMsg( "intf error: failed ioctl KDSETMODE KD_GRAPHICS" );
 727     }
 728 }
 729