1 /*****************************************************************************
2 * fb.c : framebuffer plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2009 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
33 #include <errno.h> /* ENOMEM */
34 #include <signal.h> /* SIGUSR1, SIGUSR2 */
35 #include <fcntl.h> /* open() */
36 #include <unistd.h> /* close() */
38 #include <termios.h> /* struct termios */
39 #include <sys/ioctl.h>
40 #include <sys/mman.h> /* mmap() */
43 #include <linux/vt.h> /* VT_* */
44 #include <linux/kd.h> /* KD* */
46 #include <vlc_common.h>
47 #include <vlc_plugin.h>
49 #include <vlc_interface.h>
51 /*****************************************************************************
53 *****************************************************************************/
54 static int Create ( vlc_object_t * );
55 static void Destroy ( vlc_object_t * );
57 static int Init ( vout_thread_t * );
58 static void End ( vout_thread_t * );
59 static int Manage ( vout_thread_t * );
60 static void Display ( vout_thread_t *, picture_t * );
61 static int Control ( vout_thread_t *, int, va_list );
63 static int NewPicture ( vout_thread_t *, picture_t * );
64 static void FreePicture ( vout_thread_t *, picture_t * );
66 static int OpenDisplay ( vout_thread_t * );
67 static void CloseDisplay ( vout_thread_t * );
68 static void SwitchDisplay ( int i_signal );
69 static void TextMode ( int i_tty );
70 static void GfxMode ( int i_tty );
72 #define MAX_DIRECTBUFFERS 1
74 /*****************************************************************************
76 *****************************************************************************/
77 #define FB_DEV_VAR "fbdev"
79 #define DEVICE_TEXT N_("Framebuffer device")
80 #define DEVICE_LONGTEXT N_( \
81 "Framebuffer device to use for rendering (usually /dev/fb0).")
83 #define TTY_TEXT N_("Run fb on current tty.")
84 #define TTY_LONGTEXT N_( \
85 "Run framebuffer on current TTY device (default enabled). " \
86 "(disable tty handling with caution)" )
88 #define CHROMA_TEXT N_("Chroma used.")
89 #define CHROMA_LONGTEXT N_( \
90 "Force use of a specific chroma for output. Default is I420." )
92 #define ASPECT_RATIO_TEXT N_("Video aspect ratio")
93 #define ASPECT_RATIO_LONGTEXT N_( \
94 "Aspect ratio of the video image (4:3, 16:9). Default is square pixels." )
96 #define FB_MODE_TEXT N_("Framebuffer resolution to use.")
97 #define FB_MODE_LONGTEXT N_( \
98 "Select the resolution for the framebuffer. Currently it supports " \
99 "the values 0=QCIF 1=CIF 2=NTSC 3=PAL, 4=auto (default 4=auto)" )
101 #define HW_ACCEL_TEXT N_("Framebuffer uses hw acceleration.")
102 #define HW_ACCEL_LONGTEXT N_( \
103 "If your framebuffer supports hardware acceleration or does double buffering " \
104 "in hardware then you must disable this option. It then does double buffering " \
108 set_shortname( "Framebuffer" )
109 set_category( CAT_VIDEO )
110 set_subcategory( SUBCAT_VIDEO_VOUT )
111 add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
113 add_bool( "fb-tty", 1, NULL, TTY_TEXT, TTY_LONGTEXT, true )
114 add_string( "fb-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
116 add_string( "fb-aspect-ratio", NULL, NULL, ASPECT_RATIO_TEXT,
117 ASPECT_RATIO_LONGTEXT, true )
118 add_integer( "fb-mode", 4, NULL, FB_MODE_TEXT, FB_MODE_LONGTEXT,
120 add_bool( "fb-hw-accel", true, NULL, HW_ACCEL_TEXT, HW_ACCEL_LONGTEXT,
122 set_description( N_("GNU/Linux framebuffer video output") )
123 set_capability( "video output", 30 )
124 set_callbacks( Create, Destroy )
127 /*****************************************************************************
128 * vout_sys_t: video output framebuffer method descriptor
129 *****************************************************************************
130 * This structure is part of the video output thread descriptor.
131 * It describes the FB specific properties of an output thread.
132 *****************************************************************************/
135 /* System information */
136 int i_tty; /* tty device handle */
138 struct termios old_termios;
140 /* Original configuration information */
141 struct sigaction sig_usr1; /* USR1 previous handler */
142 struct sigaction sig_usr2; /* USR2 previous handler */
143 struct vt_mode vt_mode; /* previous VT mode */
145 /* Framebuffer information */
146 int i_fd; /* device handle */
147 struct fb_var_screeninfo old_info; /* original mode information */
148 struct fb_var_screeninfo var_info; /* current mode information */
149 bool b_pan; /* does device supports panning ? */
150 struct fb_cmap fb_cmap; /* original colormap */
151 uint16_t *p_palette; /* original palette */
152 bool b_hw_accel; /* has hardware support */
154 /* Video information */
158 int i_bytes_per_pixel;
159 bool b_auto; /* Automatically adjust video size to fb size */
160 vlc_fourcc_t i_chroma;
163 uint8_t *p_video; /* base adress */
164 size_t i_page_size; /* page size */
169 uint8_t * p_data; /* base adress */
172 /*****************************************************************************
173 * Create: allocates FB video thread output method
174 *****************************************************************************
175 * This function allocates and initializes a FB vout method.
176 *****************************************************************************/
177 static int Create( vlc_object_t *p_this )
179 vout_thread_t *p_vout = (vout_thread_t *)p_this;
184 struct sigaction sig_tty; /* sigaction for tty change */
185 struct vt_mode vt_mode; /* vt current mode */
186 struct termios new_termios;
188 /* Allocate instance and initialize some members */
189 p_vout->p_sys = p_sys = calloc( 1, sizeof( vout_sys_t ) );
190 if( p_vout->p_sys == NULL )
193 p_sys->p_video = MAP_FAILED;
195 p_vout->pf_init = Init;
196 p_vout->pf_end = End;
197 p_vout->pf_manage = Manage;
198 p_vout->pf_render = NULL;
199 p_vout->pf_display = Display;
200 p_vout->pf_control = Control;
202 /* Does the framebuffer uses hw acceleration? */
203 p_sys->b_hw_accel = var_CreateGetBool( p_vout, "fb-hw-accel" );
205 /* Set tty and fb devices */
206 p_sys->i_tty = 0; /* 0 == /dev/tty0 == current console */
207 p_sys->b_tty = var_CreateGetBool( p_vout, "fb-tty" );
209 #if defined(HAVE_ISATTY)
210 /* Check that stdin is a TTY */
211 if( p_sys->b_tty && !isatty( 0 ) )
213 msg_Warn( p_vout, "fd 0 is not a TTY" );
219 msg_Warn( p_vout, "disabling tty handling, use with caution because "
220 "there is no way to return to the tty." );
225 psz_chroma = var_CreateGetNonEmptyString( p_vout, "fb-chroma" );
228 if( strlen( psz_chroma ) == 4 )
230 p_sys->i_chroma = VLC_FOURCC( psz_chroma[0],
234 msg_Dbg( p_vout, "forcing chroma '%s'", psz_chroma );
238 msg_Warn( p_vout, "invalid chroma (%s), using defaults.",
244 p_sys->i_aspect = -1;
245 psz_aspect = var_CreateGetNonEmptyString( p_vout, "fb-aspect-ratio" );
248 char *psz_parser = strchr( psz_aspect, ':' );
252 *psz_parser++ = '\0';
253 p_sys->i_aspect = ( atoi( psz_aspect )
254 * VOUT_ASPECT_FACTOR ) / atoi( psz_parser );
256 msg_Dbg( p_vout, "using aspect ratio %d:%d",
257 atoi( psz_aspect ), atoi( psz_parser ) );
262 p_sys->b_auto = false;
263 i_mode = var_CreateGetInteger( p_vout, "fb-mode" );
267 p_sys->i_width = 176;
268 p_sys->i_height = 144;
271 p_sys->i_width = 352;
272 p_sys->i_height = 288;
275 p_sys->i_width = 640;
276 p_sys->i_height = 480;
279 p_sys->i_width = 704;
280 p_sys->i_height = 576;
284 p_sys->b_auto = true;
290 GfxMode( p_sys->i_tty );
292 /* Set keyboard settings */
293 if( tcgetattr(0, &p_vout->p_sys->old_termios) == -1 )
295 msg_Err( p_vout, "tcgetattr failed" );
298 if( tcgetattr(0, &new_termios) == -1 )
300 msg_Err( p_vout, "tcgetattr failed" );
303 /* new_termios.c_lflag &= ~ (ICANON | ISIG);
304 new_termios.c_lflag |= (ECHO | ECHOCTL); */
305 new_termios.c_lflag &= ~ (ICANON);
306 new_termios.c_lflag &= ~(ECHO | ECHOCTL);
307 new_termios.c_iflag = 0;
308 new_termios.c_cc[VMIN] = 1;
309 new_termios.c_cc[VTIME] = 0;
311 if( tcsetattr(0, TCSAFLUSH, &new_termios) == -1 )
313 msg_Err( p_vout, "tcsetattr failed" );
316 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
318 /* Set-up tty signal handler to be aware of tty changes */
319 memset( &sig_tty, 0, sizeof( sig_tty ) );
320 sig_tty.sa_handler = SwitchDisplay;
321 sigemptyset( &sig_tty.sa_mask );
322 if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
323 sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
325 msg_Err( p_vout, "cannot set signal handler (%m)" );
326 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
327 TextMode( p_sys->i_tty );
328 free( p_vout->p_sys );
332 /* Set-up tty according to new signal handler */
333 if( -1 == ioctl( p_sys->i_tty, VT_GETMODE, &p_vout->p_sys->vt_mode ) )
335 msg_Err( p_vout, "cannot get terminal mode (%m)" );
336 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
337 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
338 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
339 TextMode( p_sys->i_tty );
340 free( p_vout->p_sys );
343 memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
344 vt_mode.mode = VT_PROCESS;
346 vt_mode.relsig = SIGUSR1;
347 vt_mode.acqsig = SIGUSR2;
349 if( -1 == ioctl( p_sys->i_tty, VT_SETMODE, &vt_mode ) )
351 msg_Err( p_vout, "cannot set terminal mode (%m)" );
352 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
353 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
354 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
355 TextMode( p_sys->i_tty );
356 free( p_vout->p_sys );
361 if( OpenDisplay( p_vout ) )
363 Destroy( VLC_OBJECT(p_vout) );
371 /*****************************************************************************
372 * Destroy: destroy FB video thread output method
373 *****************************************************************************
374 * Terminate an output method created by Create
375 *****************************************************************************/
376 static void Destroy( vlc_object_t *p_this )
378 vout_thread_t *p_vout = (vout_thread_t *)p_this;
380 CloseDisplay( p_vout );
382 if( p_vout->p_sys->b_tty )
384 /* Reset the terminal */
385 ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
387 /* Remove signal handlers */
388 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
389 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
391 /* Reset the keyboard state */
392 tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
394 /* Return to text mode */
395 TextMode( p_vout->p_sys->i_tty );
398 /* Destroy structure */
399 free( p_vout->p_sys );
402 /*****************************************************************************
403 * NewPicture: allocate a picture
404 *****************************************************************************
405 * Returns 0 on success, -1 otherwise
406 *****************************************************************************/
407 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
409 /* We know the chroma, allocate a buffer which will be used
410 * directly by the decoder */
411 p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
412 if( p_pic->p_sys == NULL )
417 /* Fill in picture_t fields */
418 vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
419 p_vout->output.i_width, p_vout->output.i_height,
420 p_vout->output.i_aspect );
422 p_pic->p_sys->p_data = malloc( p_vout->p_sys->i_page_size );
423 if( !p_pic->p_sys->p_data )
425 free( p_pic->p_sys );
430 p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_data;
432 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
433 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
434 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
436 if( p_vout->p_sys->var_info.xres_virtual )
438 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
439 * p_vout->p_sys->i_bytes_per_pixel;
443 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
444 * p_vout->p_sys->i_bytes_per_pixel;
447 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
448 * p_vout->p_sys->i_bytes_per_pixel;
454 /*****************************************************************************
455 * FreePicture: destroy a picture allocated with NewPicture
456 *****************************************************************************
457 * Destroy Image AND associated data.
458 *****************************************************************************/
459 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
462 free( p_pic->p_sys->p_data );
463 free( p_pic->p_sys );
467 /*****************************************************************************
468 * Init: initialize framebuffer video thread output method
469 *****************************************************************************/
470 static int Init( vout_thread_t *p_vout )
472 vout_sys_t *p_sys = p_vout->p_sys;
474 picture_t *p_pic = NULL;
476 I_OUTPUTPICTURES = 0;
478 p_vout->output.i_width = p_vout->render.i_width;
479 p_vout->output.i_height = p_vout->render.i_height;
480 p_vout->output.i_aspect = p_vout->render.i_aspect;
482 p_vout->fmt_out = p_vout->fmt_in;
483 if( p_sys->i_chroma == 0 )
485 /* Initialize the output structure: RGB with square pixels, whatever
486 * the input format is, since it's the only format we know */
487 switch( p_sys->var_info.bits_per_pixel )
489 case 8: /* FIXME: set the palette */
490 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
492 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
494 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
496 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
498 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
500 msg_Err( p_vout, "unknown screen depth %i",
501 p_vout->p_sys->var_info.bits_per_pixel );
505 if( p_sys->var_info.bits_per_pixel != 8 )
507 p_vout->output.i_rmask = ( (1 << p_sys->var_info.red.length) - 1 )
508 << p_sys->var_info.red.offset;
509 p_vout->output.i_gmask = ( (1 << p_sys->var_info.green.length) - 1 )
510 << p_sys->var_info.green.offset;
511 p_vout->output.i_bmask = ( (1 << p_sys->var_info.blue.length) - 1 )
512 << p_sys->var_info.blue.offset;
517 p_vout->output.i_chroma = p_sys->i_chroma;
519 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
521 p_vout->output.i_width =
522 p_vout->fmt_out.i_width =
523 p_vout->fmt_out.i_visible_width = p_sys->i_width;
524 p_vout->output.i_height =
525 p_vout->fmt_out.i_height =
526 p_vout->fmt_out.i_visible_height = p_sys->i_height;
528 /* Assume we have square pixels */
529 if( p_sys->i_aspect < 0 )
531 p_vout->output.i_aspect = ( p_sys->i_width
532 * VOUT_ASPECT_FACTOR ) / p_sys->i_height;
534 else p_vout->output.i_aspect = p_sys->i_aspect;
536 p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_sar_den = 1;
537 p_vout->fmt_out.i_aspect = p_vout->render.i_aspect = p_vout->output.i_aspect;
538 p_vout->fmt_out.i_x_offset= p_vout->fmt_out.i_y_offset = 0;
540 /* Clear the screen */
541 memset( p_sys->p_video, 0, p_sys->i_page_size );
543 if( !p_sys->b_hw_accel )
545 /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
546 while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
550 /* Find an empty picture slot */
551 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
553 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
555 p_pic = p_vout->p_picture + i_index;
560 /* Allocate the picture */
561 if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
566 p_pic->i_status = DESTROYED_PICTURE;
567 p_pic->i_type = DIRECT_PICTURE;
569 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
576 /* Try to initialize 1 direct buffer */
579 /* Find an empty picture slot */
580 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
582 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
584 p_pic = p_vout->p_picture + i_index;
589 /* Allocate the picture */
595 /* We know the chroma, allocate a buffer which will be used
596 * directly by the decoder */
597 p_pic->p->p_pixels = p_vout->p_sys->p_video;
598 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
599 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
600 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
602 if( p_vout->p_sys->var_info.xres_virtual )
604 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
605 * p_vout->p_sys->i_bytes_per_pixel;
609 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
610 * p_vout->p_sys->i_bytes_per_pixel;
613 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
614 * p_vout->p_sys->i_bytes_per_pixel;
616 p_pic->i_status = DESTROYED_PICTURE;
617 p_pic->i_type = DIRECT_PICTURE;
619 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
627 /*****************************************************************************
628 * End: terminate framebuffer video thread output method
629 *****************************************************************************/
630 static void End( vout_thread_t *p_vout )
632 if( !p_vout->p_sys->b_hw_accel )
636 /* Free the direct buffers we allocated */
637 for( i_index = I_OUTPUTPICTURES ; i_index ; )
640 FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
644 /* Clear the screen */
645 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
648 /*****************************************************************************
649 * Control: control facility for the vout
650 *****************************************************************************/
651 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
653 (void) p_vout; (void) i_query; (void) args;
657 /*****************************************************************************
658 * Manage: handle FB events
659 *****************************************************************************
660 * This function should be called regularly by video output thread. It manages
661 * console events. It returns a non null value on error.
662 *****************************************************************************/
663 static int Manage( vout_thread_t *p_vout )
668 if ( read(0, &buf, 1) == 1)
673 libvlc_Quit( p_vout->p_libvlc );
685 if( p_vout->i_changes & VOUT_SIZE_CHANGE )
687 msg_Dbg( p_vout, "reinitializing framebuffer screen" );
688 p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
690 /* Destroy XImages to change their size */
693 /* Recreate XImages. If SysInit failed, the thread can't go on. */
696 msg_Err( p_vout, "cannot reinit framebuffer screen" );
701 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
704 /* Tell the video output thread that it will need to rebuild YUV
705 * tables. This is needed since conversion buffer size may have changed */
706 p_vout->i_changes |= VOUT_YUV_CHANGE;
713 /*****************************************************************************
714 * Display: displays previously rendered output
715 *****************************************************************************
716 * This function send the currently rendered image to FB image, waits until
717 * it is displayed and switch the two rendering buffers, preparing next frame.
718 *****************************************************************************/
719 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
722 /* swap the two Y offsets if the drivers supports panning */
723 if( p_vout->p_sys->b_pan )
725 p_vout->p_sys->var_info.yoffset = 0;
726 /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
728 /* the X offset should be 0, but who knows ...
729 * some other app might have played with the framebuffer */
730 p_vout->p_sys->var_info.xoffset = 0;
734 ioctl( p_vout->p_sys->i_fd,
735 FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
740 if( !p_vout->p_sys->b_hw_accel )
742 vlc_memcpy( p_vout->p_sys->p_video, p_pic->p->p_pixels,
743 p_vout->p_sys->i_page_size );
748 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
749 uint16_t *blue, uint16_t *transp )
751 struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
753 ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
757 /* following functions are local */
759 /*****************************************************************************
760 * OpenDisplay: initialize framebuffer
761 *****************************************************************************/
762 static int OpenDisplay( vout_thread_t *p_vout )
764 vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
765 char *psz_device; /* framebuffer device path */
766 struct fb_fix_screeninfo fix_info; /* framebuffer fix information */
768 /* Open framebuffer device */
769 if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
771 msg_Err( p_vout, "don't know which fb device to open" );
775 p_sys->i_fd = open( psz_device, O_RDWR);
776 if( p_sys->i_fd == -1 )
778 msg_Err( p_vout, "cannot open %s (%m)", psz_device );
784 /* Get framebuffer device information */
785 if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
787 msg_Err( p_vout, "cannot get fb info (%m)" );
788 close( p_sys->i_fd );
792 memcpy( &p_sys->old_info, &p_sys->var_info,
793 sizeof( struct fb_var_screeninfo ) );
795 /* Get some info on the framebuffer itself */
798 p_sys->var_info.xres = p_sys->var_info.xres_virtual = p_sys->i_width;
799 p_sys->var_info.yres = p_sys->var_info.yres_virtual = p_sys->i_height;
800 p_vout->fmt_out.i_width = p_sys->i_width;
801 p_vout->fmt_out.i_height = p_sys->i_height;
804 /* Set some attributes */
805 p_sys->var_info.activate = p_sys->b_tty
806 ? FB_ACTIVATE_NXTOPEN
808 p_sys->var_info.xoffset = 0;
809 p_sys->var_info.yoffset = 0;
811 if( ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->var_info ) )
813 msg_Err( p_vout, "cannot set fb info (%m)" );
814 close( p_sys->i_fd );
818 /* Get some information again, in the definitive configuration */
819 if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
820 || ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
822 msg_Err( p_vout, "cannot get additional fb info (%m)" );
824 /* Restore fb config */
825 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
827 close( p_sys->i_fd );
831 /* If the fb has limitations on mode change,
832 * then keep the resolution of the fb */
833 if( (p_sys->i_height != p_sys->var_info.yres) ||
834 (p_sys->i_width != p_sys->var_info.xres) )
836 p_sys->b_auto = true;
838 "using framebuffer native resolution instead of requested (%ix%i)",
839 p_sys->i_width, p_sys->i_height );
841 p_sys->i_height = p_sys->var_info.yres;
842 p_sys->i_width = p_sys->var_info.xres_virtual
843 ? p_sys->var_info.xres_virtual
844 : p_sys->var_info.xres;
846 /* FIXME: if the image is full-size, it gets cropped on the left
847 * because of the xres / xres_virtual slight difference */
848 msg_Dbg( p_vout, "%ix%i (virtual %ix%i) (request %ix%i)",
849 p_sys->var_info.xres, p_sys->var_info.yres,
850 p_sys->var_info.xres_virtual,
851 p_sys->var_info.yres_virtual,
852 p_sys->i_width, p_sys->i_height );
854 p_sys->p_palette = NULL;
855 p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
857 switch( p_sys->var_info.bits_per_pixel )
860 p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
861 if( !p_sys->p_palette )
863 /* Restore fb config */
864 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
866 close( p_sys->i_fd );
869 p_sys->fb_cmap.start = 0;
870 p_sys->fb_cmap.len = 256;
871 p_sys->fb_cmap.red = p_sys->p_palette;
872 p_sys->fb_cmap.green = p_sys->p_palette + 256 * sizeof( uint16_t );
873 p_sys->fb_cmap.blue = p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
874 p_sys->fb_cmap.transp = p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
876 /* Save the colormap */
877 ioctl( p_sys->i_fd, FBIOGETCMAP, &p_sys->fb_cmap );
879 p_sys->i_bytes_per_pixel = 1;
884 p_sys->i_bytes_per_pixel = 2;
888 p_sys->i_bytes_per_pixel = 3;
892 p_sys->i_bytes_per_pixel = 4;
896 msg_Err( p_vout, "screen depth %d is not supported",
897 p_sys->var_info.bits_per_pixel );
899 /* Restore fb config */
900 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
902 close( p_sys->i_fd );
906 p_sys->i_page_size = p_sys->i_width * p_sys->i_height *
907 p_sys->i_bytes_per_pixel;
909 /* Map a framebuffer at the beginning */
910 p_sys->p_video = mmap( NULL, p_sys->i_page_size,
911 PROT_READ | PROT_WRITE, MAP_SHARED,
914 if( p_sys->p_video == MAP_FAILED )
916 msg_Err( p_vout, "cannot map video memory (%m)" );
918 if( p_sys->var_info.bits_per_pixel == 8 )
920 free( p_sys->p_palette );
921 p_sys->p_palette = NULL;
924 /* Restore fb config */
925 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
927 close( p_sys->i_fd );
931 msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
932 "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
933 fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
937 /*****************************************************************************
938 * CloseDisplay: terminate FB video thread output method
939 *****************************************************************************/
940 static void CloseDisplay( vout_thread_t *p_vout )
942 if( p_vout->p_sys->p_video != MAP_FAILED )
945 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
946 munmap( p_vout->p_sys->p_video, p_vout->p_sys->i_page_size );
949 if( p_vout->p_sys->i_fd >= 0 )
951 /* Restore palette */
952 if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
954 ioctl( p_vout->p_sys->i_fd,
955 FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
956 free( p_vout->p_sys->p_palette );
957 p_vout->p_sys->p_palette = NULL;
960 /* Restore fb config */
961 ioctl( p_vout->p_sys->i_fd,
962 FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
965 close( p_vout->p_sys->i_fd );
969 /*****************************************************************************
970 * SwitchDisplay: VT change signal handler
971 *****************************************************************************
972 * This function activates or deactivates the output of the thread. It is
973 * called by the VT driver, on terminal change.
974 *****************************************************************************/
975 static void SwitchDisplay( int i_signal )
977 VLC_UNUSED( i_signal );
979 vout_thread_t *p_vout;
981 vlc_mutex_lock( &p_vout_bank->lock );
983 /* XXX: only test the first video output */
984 if( p_vout_bank->i_count )
986 p_vout = p_vout_bank->pp_vout[0];
990 case SIGUSR1: /* vt has been released */
991 p_vout->b_active = 0;
992 ioctl( p_sys->i_tty, VT_RELDISP, 1 );
994 case SIGUSR2: /* vt has been acquired */
995 p_vout->b_active = 1;
996 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
997 /* handle blanking */
998 vlc_mutex_lock( &p_vout->change_lock );
999 p_vout->i_changes |= VOUT_SIZE_CHANGE;
1000 vlc_mutex_unlock( &p_vout->change_lock );
1005 vlc_mutex_unlock( &p_vout_bank->lock );
1009 /*****************************************************************************
1010 * TextMode and GfxMode : switch tty to text/graphic mode
1011 *****************************************************************************
1012 * These functions toggle the tty mode.
1013 *****************************************************************************/
1014 static void TextMode( int i_tty )
1016 /* return to text mode */
1017 if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
1019 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
1023 static void GfxMode( int i_tty )
1025 /* switch to graphic mode */
1026 if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
1028 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/