1 /*****************************************************************************
2 * fb.c : framebuffer plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2009 VLC authors and VideoLAN
5 * $Id: 765e01b1b79f6528ccc321d325db21e32d34df01 $
6 *
7 * Authors: Samuel Hocevar <sam@zoy.org>
8 * Jean-Paul Saman
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
14 *
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 Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
24
25 /*****************************************************************************
26 * Preamble
27 *****************************************************************************/
28
29 #ifdef HAVE_CONFIG_H
30 # include "config.h"
31 #endif
32
33 #include <signal.h> /* SIGUSR1, SIGUSR2 */
34 #include <fcntl.h> /* open() */
35 #include <unistd.h> /* close() */
36 #include <errno.h>
37 #include <termios.h> /* struct termios */
38 #include <sys/ioctl.h>
39 #include <sys/mman.h> /* mmap() */
40
41 #include <linux/fb.h>
42 #include <linux/vt.h> /* VT_* */
43 #include <linux/kd.h> /* KD* */
44
45 #include <vlc_common.h>
46 #include <vlc_plugin.h>
47 #include <vlc_vout_display.h>
48 #include <vlc_picture_pool.h>
49 #include <vlc_fs.h>
50
51 /*****************************************************************************
52 * Module descriptor
53 *****************************************************************************/
54 #define FB_DEV_VAR "fbdev"
55
56 #define DEVICE_TEXT N_("Framebuffer device")
57 #define DEVICE_LONGTEXT N_(\
58 "Framebuffer device to use for rendering (usually /dev/fb0).")
59
60 #define TTY_TEXT N_("Run fb on current tty")
61 #define TTY_LONGTEXT N_(\
62 "Run framebuffer on current TTY device (default enabled). " \
63 "(disable tty handling with caution)")
64
65 #define FB_MODE_TEXT N_("Framebuffer resolution to use")
66 #define FB_MODE_LONGTEXT N_(\
67 "Select the resolution for the framebuffer. Currently it supports " \
68 "the values 0=QCIF 1=CIF 2=NTSC 3=PAL, 4=auto (default 4=auto)")
69
70 #define HW_ACCEL_TEXT N_("Framebuffer uses hw acceleration")
71 #define HW_ACCEL_LONGTEXT N_("Disable for double buffering in software.")
72
73 #define CHROMA_TEXT N_("Image format (default RGB)")
74 #define CHROMA_LONGTEXT N_("Chroma fourcc used by the framebuffer. Default is RGB since the fb device has no way to report its chroma.")
75
76 static int Open (vlc_object_t *);
77 static void Close(vlc_object_t *);
78
79 vlc_module_begin ()
80 set_shortname("Framebuffer")
81 set_category(CAT_VIDEO)
82 set_subcategory(SUBCAT_VIDEO_VOUT)
83 add_loadfile(FB_DEV_VAR, "/dev/fb0", DEVICE_TEXT, DEVICE_LONGTEXT,
84 false)
85 add_bool("fb-tty", true, TTY_TEXT, TTY_LONGTEXT, true)
86 add_string( "fb-chroma", NULL, CHROMA_TEXT, CHROMA_LONGTEXT, true )
87 add_obsolete_string("fb-aspect-ratio")
88 add_integer("fb-mode", 4, FB_MODE_TEXT, FB_MODE_LONGTEXT,
89 true)
90 add_bool("fb-hw-accel", true, HW_ACCEL_TEXT, HW_ACCEL_LONGTEXT,
91 true)
92 set_description(N_("GNU/Linux framebuffer video output"))
93 set_capability("vout display", 30)
94 set_callbacks(Open, Close)
95 vlc_module_end ()
96
97 /*****************************************************************************
98 * Local prototypes
99 *****************************************************************************/
100 static picture_pool_t *Pool (vout_display_t *, unsigned);
101 static void Display(vout_display_t *, picture_t *, subpicture_t *);
102 static int Control(vout_display_t *, int, va_list);
103
104 /* */
105 static int OpenDisplay (vout_display_t *, bool force_resolution);
106 static void CloseDisplay (vout_display_t *);
107 #if 0
108 static void SwitchDisplay(int i_signal);
109 #endif
110 static void TextMode (int tty);
111 static void GfxMode (int tty);
112
113 static int TtyInit(vout_display_t *);
114 static void TtyExit(vout_display_t *);
115
116 /* */
117 struct vout_display_sys_t {
118 /* System information */
119 int tty; /* tty device handle */
120 bool is_tty;
121 struct termios old_termios;
122
123 /* Original configuration information */
124 #if 0
125 struct sigaction sig_usr1; /* USR1 previous handler */
126 struct sigaction sig_usr2; /* USR2 previous handler */
127 #endif
128 struct vt_mode vt_mode; /* previous VT mode */
129
130 /* Framebuffer information */
131 int fd; /* device handle */
132 struct fb_var_screeninfo old_info; /* original mode information */
133 struct fb_var_screeninfo var_info; /* current mode information */
134 bool has_pan; /* does device supports panning ? */
135 struct fb_cmap fb_cmap; /* original colormap */
136 uint16_t *palette; /* original palette */
137 bool is_hw_accel; /* has hardware support */
138
139 /* Video information */
140 uint32_t width;
141 uint32_t height;
142 uint32_t line_length;
143 vlc_fourcc_t chroma;
144 int bytes_per_pixel;
145
146 /* Video memory */
147 uint8_t *video_ptr; /* base address */
148 size_t video_size; /* page size */
149
150 picture_t *picture;
151 picture_pool_t *pool;
152 };
153
154
ClearScreen(vout_display_sys_t * sys)155 static void ClearScreen(vout_display_sys_t *sys)
156 {
157 switch (sys->chroma) {
158 /* XXX: add other chromas */
159 case VLC_CODEC_UYVY: {
160 unsigned int j, size = sys->video_size / 4;
161 uint32_t *ptr = (uint32_t*)((uintptr_t)(sys->video_ptr + 3) & ~3);
162 for(j=0; j < size; j++)
163 ptr[j] = 0x10801080; /* U = V = 16, Y = 128 */
164 break;
165 }
166 default: /* RGB */
167 memset(sys->video_ptr, 0, sys->video_size);
168 }
169 }
170
171 /**
172 * This function allocates and initializes a FB vout method.
173 */
Open(vlc_object_t * object)174 static int Open(vlc_object_t *object)
175 {
176 vout_display_t *vd = (vout_display_t *)object;
177 vout_display_sys_t *sys;
178
179 if (vout_display_IsWindowed(vd))
180 return VLC_EGENERIC;
181
182 /* Allocate instance and initialize some members */
183 vd->sys = sys = calloc(1, sizeof(*sys));
184 if (!sys)
185 return VLC_ENOMEM;
186
187 /* Does the framebuffer uses hw acceleration? */
188 sys->is_hw_accel = var_InheritBool(vd, "fb-hw-accel");
189
190 /* Set tty and fb devices */
191 sys->tty = 0; /* 0 == /dev/tty0 == current console */
192 sys->is_tty = var_InheritBool(vd, "fb-tty");
193 #if !defined(_WIN32) && defined(HAVE_ISATTY)
194 /* Check that stdin is a TTY */
195 if (sys->is_tty && !isatty(0)) {
196 msg_Warn(vd, "standard input is not a TTY");
197 free(sys);
198 return VLC_EGENERIC;
199 }
200 msg_Warn(vd, "disabling TTY handling, use with caution because "
201 "there is no way to return to the TTY");
202 #endif
203
204 const int mode = var_InheritInteger(vd, "fb-mode");
205 bool force_resolution = true;
206 switch (mode) {
207 case 0: /* QCIF */
208 sys->width = 176;
209 sys->height = 144;
210 break;
211 case 1: /* CIF */
212 sys->width = 352;
213 sys->height = 288;
214 break;
215 case 2: /* NTSC */
216 sys->width = 640;
217 sys->height = 480;
218 break;
219 case 3: /* PAL */
220 sys->width = 704;
221 sys->height = 576;
222 break;
223 case 4:
224 default:
225 force_resolution = false;
226 break;
227 }
228
229 char *chroma = var_InheritString(vd, "fb-chroma");
230 if (chroma) {
231 sys->chroma = vlc_fourcc_GetCodecFromString(VIDEO_ES, chroma);
232
233 if (sys->chroma)
234 msg_Dbg(vd, "forcing chroma '%s'", chroma);
235 else
236 msg_Warn(vd, "chroma %s invalid, using default", chroma);
237
238 free(chroma);
239 } else
240 sys->chroma = 0;
241
242 /* tty handling */
243 if (sys->is_tty && TtyInit(vd)) {
244 free(sys);
245 return VLC_EGENERIC;
246 }
247
248 /* */
249 sys->video_ptr = MAP_FAILED;
250 sys->picture = NULL;
251 sys->pool = NULL;
252
253 if (OpenDisplay(vd, force_resolution)) {
254 Close(VLC_OBJECT(vd));
255 return VLC_EGENERIC;
256 }
257
258 /* */
259 video_format_t fmt;
260 video_format_ApplyRotation(&fmt, &vd->fmt);
261
262 if (sys->chroma) {
263 fmt.i_chroma = sys->chroma;
264 } else {
265 /* Assume RGB */
266
267 msg_Dbg(vd, "%d bppd", sys->var_info.bits_per_pixel);
268 switch (sys->var_info.bits_per_pixel) {
269 case 8: /* FIXME: set the palette */
270 fmt.i_chroma = VLC_CODEC_RGB8;
271 break;
272 case 15:
273 fmt.i_chroma = VLC_CODEC_RGB15;
274 break;
275 case 16:
276 fmt.i_chroma = VLC_CODEC_RGB16;
277 break;
278 case 24:
279 fmt.i_chroma = VLC_CODEC_RGB24;
280 break;
281 case 32:
282 fmt.i_chroma = VLC_CODEC_RGB32;
283 break;
284 default:
285 msg_Err(vd, "unknown screendepth %i", sys->var_info.bits_per_pixel);
286 Close(VLC_OBJECT(vd));
287 return VLC_EGENERIC;
288 }
289 if (sys->var_info.bits_per_pixel != 8) {
290 fmt.i_rmask = ((1 << sys->var_info.red.length) - 1)
291 << sys->var_info.red.offset;
292 fmt.i_gmask = ((1 << sys->var_info.green.length) - 1)
293 << sys->var_info.green.offset;
294 fmt.i_bmask = ((1 << sys->var_info.blue.length) - 1)
295 << sys->var_info.blue.offset;
296 }
297 }
298
299 fmt.i_visible_width = sys->width;
300 fmt.i_visible_height = sys->height;
301
302 /* */
303 vd->fmt = fmt;
304 vd->pool = Pool;
305 vd->prepare = NULL;
306 vd->display = Display;
307 vd->control = Control;
308
309 /* */
310 vout_display_SendEventDisplaySize(vd, fmt.i_visible_width, fmt.i_visible_height);
311 return VLC_SUCCESS;
312 }
313
314 /**
315 * Terminate an output method created by Open
316 */
Close(vlc_object_t * object)317 static void Close(vlc_object_t *object)
318 {
319 vout_display_t *vd = (vout_display_t *)object;
320 vout_display_sys_t *sys = vd->sys;
321
322 if (sys->pool)
323 picture_pool_Release(sys->pool);
324 if (!sys->is_hw_accel && sys->picture)
325 picture_Release(sys->picture);
326
327 CloseDisplay(vd);
328
329 if (sys->is_tty)
330 TtyExit(vd);
331
332 free(sys);
333 }
334
335 /* */
Pool(vout_display_t * vd,unsigned count)336 static picture_pool_t *Pool(vout_display_t *vd, unsigned count)
337 {
338 vout_display_sys_t *sys = vd->sys;
339
340 if (!sys->pool) {
341 if (!sys->picture) {
342 picture_resource_t rsc;
343
344 memset(&rsc, 0, sizeof(rsc));
345 rsc.p[0].p_pixels = sys->video_ptr;
346 rsc.p[0].i_lines = sys->var_info.yres;
347 rsc.p[0].i_pitch = sys->line_length;
348
349 sys->picture = picture_NewFromResource(&vd->fmt, &rsc);
350 if (!sys->picture)
351 return NULL;
352 }
353
354 if (sys->is_hw_accel)
355 sys->pool = picture_pool_New(1, &sys->picture);
356 else
357 sys->pool = picture_pool_NewFromFormat(&vd->fmt, count);
358 }
359 return sys->pool;
360 }
Display(vout_display_t * vd,picture_t * picture,subpicture_t * subpicture)361 static void Display(vout_display_t *vd, picture_t *picture, subpicture_t *subpicture)
362 {
363 vout_display_sys_t *sys = vd->sys;
364
365 /* swap the two Y offsets if the drivers supports panning */
366 if (sys->has_pan) {
367 sys->var_info.yoffset = 0;
368 /*vd->sys->var_info.yoffset = vd->sys->var_info.yres; */
369
370 /* the X offset should be 0, but who knows ...
371 * some other app might have played with the framebuffer */
372 sys->var_info.xoffset = 0;
373
374 /* FIXME 'static' is damn wrong and it's dead code ... */
375 static int panned = 0;
376 if (panned < 0) {
377 ioctl(sys->fd, FBIOPAN_DISPLAY, &sys->var_info);
378 panned++;
379 }
380 }
381
382 if (!sys->is_hw_accel)
383 picture_Copy(sys->picture, picture);
384
385 picture_Release(picture);
386 VLC_UNUSED(subpicture);
387 }
Control(vout_display_t * vd,int query,va_list args)388 static int Control(vout_display_t *vd, int query, va_list args)
389 {
390 (void) vd; (void) query; (void) args;
391 return VLC_EGENERIC;
392 }
393
394 /* following functions are local */
TtyInit(vout_display_t * vd)395 static int TtyInit(vout_display_t *vd)
396 {
397 vout_display_sys_t *sys = vd->sys;
398
399 struct termios new_termios;
400
401 GfxMode(sys->tty);
402
403 /* Set keyboard settings */
404 if (tcgetattr(0, &sys->old_termios) == -1) {
405 msg_Err(vd, "tcgetattr failed");
406 }
407
408 if (tcgetattr(0, &new_termios) == -1) {
409 msg_Err(vd, "tcgetattr failed");
410 }
411
412 /* new_termios.c_lflag &= ~ (ICANON | ISIG);
413 new_termios.c_lflag |= (ECHO | ECHOCTL); */
414 new_termios.c_lflag &= ~ (ICANON);
415 new_termios.c_lflag &= ~(ECHO | ECHOCTL);
416 new_termios.c_iflag = 0;
417 new_termios.c_cc[VMIN] = 1;
418 new_termios.c_cc[VTIME] = 0;
419
420 if (tcsetattr(0, TCSAFLUSH, &new_termios) == -1) {
421 msg_Err(vd, "tcsetattr failed");
422 }
423
424 ioctl(sys->tty, VT_RELDISP, VT_ACKACQ);
425
426 #if 0
427 /* Set-up tty signal handler to be aware of tty changes */
428 struct sigaction sig_tty;
429 memset(&sig_tty, 0, sizeof(sig_tty));
430 sig_tty.sa_handler = SwitchDisplay;
431 sigemptyset(&sig_tty.sa_mask);
432 if (sigaction(SIGUSR1, &sig_tty, &sys->sig_usr1) ||
433 sigaction(SIGUSR2, &sig_tty, &sys->sig_usr2)) {
434 msg_Err(vd, "cannot set signal handler (%s)", vlc_strerror_c(errno));
435 /* FIXME SIGUSR1 could have succeed */
436 goto error_signal;
437 }
438 #endif
439
440 /* Set-up tty according to new signal handler */
441 if (-1 == ioctl(sys->tty, VT_GETMODE, &sys->vt_mode)) {
442 msg_Err(vd, "cannot get terminal mode (%s)", vlc_strerror_c(errno));
443 goto error;
444 }
445 struct vt_mode vt_mode = sys->vt_mode;
446 vt_mode.mode = VT_PROCESS;
447 vt_mode.waitv = 0;
448 vt_mode.relsig = SIGUSR1;
449 vt_mode.acqsig = SIGUSR2;
450
451 if (-1 == ioctl(sys->tty, VT_SETMODE, &vt_mode)) {
452 msg_Err(vd, "cannot set terminal mode (%s)", vlc_strerror_c(errno));
453 goto error;
454 }
455 return VLC_SUCCESS;
456
457 error:
458 #if 0
459 sigaction(SIGUSR1, &sys->sig_usr1, NULL);
460 sigaction(SIGUSR2, &sys->sig_usr2, NULL);
461 error_signal:
462 #endif
463 tcsetattr(0, 0, &sys->old_termios);
464 TextMode(sys->tty);
465 return VLC_EGENERIC;
466 }
TtyExit(vout_display_t * vd)467 static void TtyExit(vout_display_t *vd)
468 {
469 vout_display_sys_t *sys = vd->sys;
470
471 /* Reset the terminal */
472 ioctl(sys->tty, VT_SETMODE, &sys->vt_mode);
473
474 #if 0
475 /* Remove signal handlers */
476 sigaction(SIGUSR1, &sys->sig_usr1, NULL);
477 sigaction(SIGUSR2, &sys->sig_usr2, NULL);
478 #endif
479
480 /* Reset the keyboard state */
481 tcsetattr(0, 0, &sys->old_termios);
482
483 /* Return to text mode */
484 TextMode(sys->tty);
485 }
486
487 /*****************************************************************************
488 * OpenDisplay: initialize framebuffer
489 *****************************************************************************/
OpenDisplay(vout_display_t * vd,bool force_resolution)490 static int OpenDisplay(vout_display_t *vd, bool force_resolution)
491 {
492 vout_display_sys_t *sys = vd->sys;
493 char *psz_device; /* framebuffer device path */
494
495 /* Open framebuffer device */
496 if (!(psz_device = var_InheritString(vd, FB_DEV_VAR))) {
497 msg_Err(vd, "don't know which fb device to open");
498 return VLC_EGENERIC;
499 }
500
501 sys->fd = vlc_open(psz_device, O_RDWR);
502 if (sys->fd == -1) {
503 msg_Err(vd, "cannot open %s (%s)", psz_device, vlc_strerror_c(errno));
504 free(psz_device);
505 return VLC_EGENERIC;
506 }
507 free(psz_device);
508
509 /* Get framebuffer device information */
510 if (ioctl(sys->fd, FBIOGET_VSCREENINFO, &sys->var_info)) {
511 msg_Err(vd, "cannot get fb info (%s)", vlc_strerror_c(errno));
512 vlc_close(sys->fd);
513 return VLC_EGENERIC;
514 }
515 sys->old_info = sys->var_info;
516
517 /* Get some info on the framebuffer itself */
518 if (force_resolution) {
519 sys->var_info.xres = sys->var_info.xres_virtual = sys->width;
520 sys->var_info.yres = sys->var_info.yres_virtual = sys->height;
521 }
522
523 /* Set some attributes */
524 sys->var_info.activate = sys->is_tty ? FB_ACTIVATE_NXTOPEN :
525 FB_ACTIVATE_NOW;
526 sys->var_info.xoffset = 0;
527 sys->var_info.yoffset = 0;
528
529 if (ioctl(sys->fd, FBIOPUT_VSCREENINFO, &sys->var_info)) {
530 msg_Err(vd, "cannot set fb info (%s)", vlc_strerror_c(errno));
531 vlc_close(sys->fd);
532 return VLC_EGENERIC;
533 }
534
535 struct fb_fix_screeninfo fix_info;
536 /* Get some information again, in the definitive configuration */
537 if (ioctl(sys->fd, FBIOGET_FSCREENINFO, &fix_info) ||
538 ioctl(sys->fd, FBIOGET_VSCREENINFO, &sys->var_info)) {
539 msg_Err(vd, "cannot get additional fb info (%s)",
540 vlc_strerror_c(errno));
541
542 /* Restore fb config */
543 ioctl(sys->fd, FBIOPUT_VSCREENINFO, &sys->old_info);
544
545 vlc_close(sys->fd);
546 return VLC_EGENERIC;
547 }
548
549 /* If the fb has limitations on mode change,
550 * then keep the resolution of the fb */
551 if ((sys->height != sys->var_info.yres) ||
552 (sys->width != sys->var_info.xres)) {
553 msg_Warn(vd,
554 "using framebuffer native resolution instead of requested (%ix%i)",
555 sys->width, sys->height);
556 }
557 sys->height = sys->var_info.yres;
558 sys->width = sys->var_info.xres_virtual ? sys->var_info.xres_virtual :
559 sys->var_info.xres;
560 sys->line_length = fix_info.line_length;
561
562 /* FIXME: if the image is full-size, it gets cropped on the left
563 * because of the xres / xres_virtual slight difference */
564 msg_Dbg(vd, "%ix%i (virtual %ix%i) (request %ix%i)",
565 sys->var_info.xres, sys->var_info.yres,
566 sys->var_info.xres_virtual,
567 sys->var_info.yres_virtual,
568 sys->width, sys->height);
569
570 sys->palette = NULL;
571 sys->has_pan = (fix_info.ypanstep || fix_info.ywrapstep);
572
573 switch (sys->var_info.bits_per_pixel) {
574 case 8:
575 sys->palette = malloc(4 * 256 * sizeof(uint16_t));
576 if (!sys->palette) {
577 /* Restore fb config */
578 ioctl(sys->fd, FBIOPUT_VSCREENINFO, &sys->old_info);
579
580 vlc_close(sys->fd);
581 return VLC_ENOMEM;
582 }
583 sys->fb_cmap.start = 0;
584 sys->fb_cmap.len = 256;
585 sys->fb_cmap.red = sys->palette;
586 sys->fb_cmap.green = sys->palette + 256;
587 sys->fb_cmap.blue = sys->palette + 2 * 256;
588 sys->fb_cmap.transp = sys->palette + 3 * 256;
589
590 /* Save the colormap */
591 ioctl(sys->fd, FBIOGETCMAP, &sys->fb_cmap);
592
593 sys->bytes_per_pixel = 1;
594 break;
595
596 case 15:
597 case 16:
598 sys->bytes_per_pixel = 2;
599 break;
600
601 case 24:
602 sys->bytes_per_pixel = 3;
603 break;
604
605 case 32:
606 sys->bytes_per_pixel = 4;
607 break;
608
609 default:
610 msg_Err(vd, "screen depth %d is not supported",
611 sys->var_info.bits_per_pixel);
612
613 /* Restore fb config */
614 ioctl(sys->fd, FBIOPUT_VSCREENINFO, &sys->old_info);
615
616 vlc_close(sys->fd);
617 return VLC_EGENERIC;
618 }
619
620 sys->video_size = sys->line_length * sys->var_info.yres_virtual;
621
622 /* Map a framebuffer at the beginning */
623 sys->video_ptr = mmap(NULL, sys->video_size,
624 PROT_READ | PROT_WRITE, MAP_SHARED, sys->fd, 0);
625
626 if (sys->video_ptr == MAP_FAILED) {
627 msg_Err(vd, "cannot map video memory (%s)", vlc_strerror_c(errno));
628
629 if (sys->var_info.bits_per_pixel == 8) {
630 free(sys->palette);
631 sys->palette = NULL;
632 }
633
634 /* Restore fb config */
635 ioctl(sys->fd, FBIOPUT_VSCREENINFO, &sys->old_info);
636
637 vlc_close(sys->fd);
638 return VLC_EGENERIC;
639 }
640
641 ClearScreen(sys);
642
643 msg_Dbg(vd,
644 "framebuffer type=%d, visual=%d, ypanstep=%d, ywrap=%d, accel=%d",
645 fix_info.type, fix_info.visual,
646 fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel);
647 return VLC_SUCCESS;
648 }
649
650 /*****************************************************************************
651 * CloseDisplay: terminate FB video thread output method
652 *****************************************************************************/
CloseDisplay(vout_display_t * vd)653 static void CloseDisplay(vout_display_t *vd)
654 {
655 vout_display_sys_t *sys = vd->sys;
656
657 if (sys->video_ptr != MAP_FAILED) {
658 ClearScreen(sys);
659 munmap(sys->video_ptr, sys->video_size);
660 }
661
662 if (sys->fd >= 0) {
663 /* Restore palette */
664 if (sys->var_info.bits_per_pixel == 8) {
665 ioctl(sys->fd, FBIOPUTCMAP, &sys->fb_cmap);
666 free(sys->palette);
667 sys->palette = NULL;
668 }
669
670 /* Restore fb config */
671 ioctl(sys->fd, FBIOPUT_VSCREENINFO, &sys->old_info);
672
673 /* Close fb */
674 vlc_close(sys->fd);
675 }
676 }
677
678 #if 0
679 /*****************************************************************************
680 * SwitchDisplay: VT change signal handler
681 *****************************************************************************
682 * This function activates or deactivates the output of the thread. It is
683 * called by the VT driver, on terminal change.
684 *****************************************************************************/
685 static void SwitchDisplay(int i_signal)
686 {
687 vout_display_t *vd;
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 vd = p_vout_bank->pp_vout[0];
695
696 switch (i_signal)
697 {
698 case SIGUSR1: /* vt has been released */
699 vd->b_active = 0;
700 ioctl(sys->tty, VT_RELDISP, 1);
701 break;
702 case SIGUSR2: /* vt has been acquired */
703 vd->b_active = 1;
704 ioctl(sys->tty, VT_RELDISP, VT_ACTIVATE);
705 /* handle blanking */
706 vlc_mutex_lock(&vd->change_lock);
707 vd->i_changes |= VOUT_SIZE_CHANGE;
708 vlc_mutex_unlock(&vd->change_lock);
709 break;
710 }
711 }
712
713 vlc_mutex_unlock(&p_vout_bank->lock);
714 }
715 #endif
716
717 /*****************************************************************************
718 * TextMode and GfxMode : switch tty to text/graphic mode
719 *****************************************************************************
720 * These functions toggle the tty mode.
721 *****************************************************************************/
TextMode(int tty)722 static void TextMode(int tty)
723 {
724 /* return to text mode */
725 if (-1 == ioctl(tty, KDSETMODE, KD_TEXT)) {
726 /*msg_Err(vd, "failed ioctl KDSETMODE KD_TEXT");*/
727 }
728 }
729
GfxMode(int tty)730 static void GfxMode(int tty)
731 {
732 /* switch to graphic mode */
733 if (-1 == ioctl(tty, KDSETMODE, KD_GRAPHICS)) {
734 /*msg_Err(vd, "failed ioctl KDSETMODE KD_GRAPHICS");*/
735 }
736 }
737