1 /*****************************************************************************
2 * fb.c : framebuffer plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 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>
50 /*****************************************************************************
52 *****************************************************************************/
53 static int Create ( vlc_object_t * );
54 static void Destroy ( vlc_object_t * );
56 static int Init ( vout_thread_t * );
57 static void End ( vout_thread_t * );
58 static int Manage ( vout_thread_t * );
59 static void Display ( vout_thread_t *, picture_t * );
60 static int Control ( vout_thread_t *, int, va_list );
62 static int NewPicture ( vout_thread_t *, picture_t * );
63 static void FreePicture ( vout_thread_t *, picture_t * );
65 static int OpenDisplay ( vout_thread_t * );
66 static void CloseDisplay ( vout_thread_t * );
67 static void SwitchDisplay ( int i_signal );
68 static void TextMode ( int i_tty );
69 static void GfxMode ( int i_tty );
71 #define MAX_DIRECTBUFFERS 1
73 /*****************************************************************************
75 *****************************************************************************/
76 #define FB_DEV_VAR "fbdev"
78 #define DEVICE_TEXT N_("Framebuffer device")
79 #define DEVICE_LONGTEXT N_( \
80 "Framebuffer device to use for rendering (usually /dev/fb0).")
82 #define TTY_TEXT N_("Run fb on current tty.")
83 #define TTY_LONGTEXT N_( \
84 "Run framebuffer on current TTY device (default enabled). " \
85 "(disable tty handling with caution)" )
87 #define CHROMA_TEXT N_("Chroma used.")
88 #define CHROMA_LONGTEXT N_( \
89 "Force use of a specific chroma for output. Default is I420." )
91 #define ASPECT_RATIO_TEXT N_("Video aspect ratio")
92 #define ASPECT_RATIO_LONGTEXT N_( \
93 "Aspect ratio of the video image (4:3, 16:9). Default is square pixels." )
95 #define FB_MODE_TEXT N_("Framebuffer resolution to use.")
96 #define FB_MODE_LONGTEXT N_( \
97 "Select the resolution for the framebuffer. Currently it supports " \
98 "the values 0=QCIF 1=CIF 2=NTSC 3=PAL, 4=auto (default 4=auto)" )
100 #define HW_ACCEL_TEXT N_("Framebuffer uses hw acceleration.")
101 #define HW_ACCEL_LONGTEXT N_( \
102 "If your framebuffer supports hardware acceleration or does double buffering " \
103 "in hardware then you must disable this option. It then does double buffering " \
107 set_shortname( "Framebuffer" );
108 set_category( CAT_VIDEO );
109 set_subcategory( SUBCAT_VIDEO_VOUT );
110 add_file( FB_DEV_VAR, "/dev/fb0", NULL, DEVICE_TEXT, DEVICE_LONGTEXT,
112 add_bool( "fb-tty", 1, NULL, TTY_TEXT, TTY_LONGTEXT, true );
113 add_string( "fb-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
115 add_string( "fb-aspect-ratio", NULL, NULL, ASPECT_RATIO_TEXT,
116 ASPECT_RATIO_LONGTEXT, true );
117 add_integer( "fb-mode", 4, NULL, FB_MODE_TEXT, FB_MODE_LONGTEXT,
119 add_bool( "fb-hw-accel", true, NULL, HW_ACCEL_TEXT, HW_ACCEL_LONGTEXT,
121 set_description( N_("GNU/Linux console framebuffer video output") );
122 set_capability( "video output", 30 );
123 set_callbacks( Create, Destroy );
126 /*****************************************************************************
127 * vout_sys_t: video output framebuffer method descriptor
128 *****************************************************************************
129 * This structure is part of the video output thread descriptor.
130 * It describes the FB specific properties of an output thread.
131 *****************************************************************************/
134 /* System information */
135 int i_tty; /* tty device handle */
137 struct termios old_termios;
139 /* Original configuration information */
140 struct sigaction sig_usr1; /* USR1 previous handler */
141 struct sigaction sig_usr2; /* USR2 previous handler */
142 struct vt_mode vt_mode; /* previous VT mode */
144 /* Framebuffer information */
145 int i_fd; /* device handle */
146 struct fb_var_screeninfo old_info; /* original mode information */
147 struct fb_var_screeninfo var_info; /* current mode information */
148 bool b_pan; /* does device supports panning ? */
149 struct fb_cmap fb_cmap; /* original colormap */
150 uint16_t *p_palette; /* original palette */
151 bool b_hw_accel; /* has hardware support */
153 /* Video information */
157 int i_bytes_per_pixel;
158 bool b_auto; /* Automatically adjust video size to fb size */
159 vlc_fourcc_t i_chroma;
162 uint8_t *p_video; /* base adress */
163 size_t i_page_size; /* page size */
168 uint8_t * p_data; /* base adress */
171 /*****************************************************************************
172 * Create: allocates FB video thread output method
173 *****************************************************************************
174 * This function allocates and initializes a FB vout method.
175 *****************************************************************************/
176 static int Create( vlc_object_t *p_this )
178 vout_thread_t *p_vout = (vout_thread_t *)p_this;
183 struct sigaction sig_tty; /* sigaction for tty change */
184 struct vt_mode vt_mode; /* vt current mode */
185 struct termios new_termios;
187 /* Allocate instance and initialize some members */
188 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
189 if( p_vout->p_sys == NULL )
191 memset( p_sys, 0, sizeof(vout_sys_t) );
193 p_vout->pf_init = Init;
194 p_vout->pf_end = End;
195 p_vout->pf_manage = Manage;
196 p_vout->pf_render = NULL;
197 p_vout->pf_display = Display;
198 p_vout->pf_control = Control;
200 /* Does the framebuffer uses hw acceleration? */
201 p_sys->b_hw_accel = var_CreateGetBool( p_vout, "fb-hw-accel" );
203 /* Set tty and fb devices */
204 p_sys->i_tty = 0; /* 0 == /dev/tty0 == current console */
205 p_sys->b_tty = var_CreateGetBool( p_vout, "fb-tty" );
207 #if defined(HAVE_ISATTY)
208 /* Check that stdin is a TTY */
209 if( p_sys->b_tty && !isatty( 0 ) )
211 msg_Warn( p_vout, "fd 0 is not a TTY" );
216 msg_Warn( p_vout, "disabling tty handling, use with caution because "
217 "there is no way to return to the tty." );
222 psz_chroma = var_CreateGetNonEmptyString( p_vout, "fb-chroma" );
225 if( strlen( psz_chroma ) == 4 )
227 p_sys->i_chroma = VLC_FOURCC( psz_chroma[0],
231 msg_Dbg( p_vout, "forcing chroma '%s'", psz_chroma );
235 msg_Warn( p_vout, "invalid chroma (%s), using defaults.",
242 p_sys->i_aspect = -1;
243 psz_aspect = var_CreateGetNonEmptyString( p_vout, "fb-aspect-ratio" );
246 char *psz_parser = strchr( psz_aspect, ':' );
250 *psz_parser++ = '\0';
251 p_sys->i_aspect = ( atoi( psz_aspect )
252 * VOUT_ASPECT_FACTOR ) / atoi( psz_parser );
254 msg_Dbg( p_vout, "using aspect ratio %d:%d",
255 atoi( psz_aspect ), atoi( psz_parser ) );
261 p_sys->b_auto = false;
262 i_mode = var_CreateGetInteger( p_vout, "fb-mode" );
266 p_sys->i_width = 176;
267 p_sys->i_height = 144;
270 p_sys->i_width = 352;
271 p_sys->i_height = 288;
274 p_sys->i_width = 640;
275 p_sys->i_height = 480;
278 p_sys->i_width = 704;
279 p_sys->i_height = 576;
283 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 ) )
365 ioctl( p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
366 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
367 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
368 tcsetattr(0, 0, &p_vout->p_sys->old_termios);
369 TextMode( p_sys->i_tty );
371 free( p_vout->p_sys );
379 /*****************************************************************************
380 * Destroy: destroy FB video thread output method
381 *****************************************************************************
382 * Terminate an output method created by Create
383 *****************************************************************************/
384 static void Destroy( vlc_object_t *p_this )
386 vout_thread_t *p_vout = (vout_thread_t *)p_this;
388 CloseDisplay( p_vout );
390 if( p_vout->p_sys->b_tty )
392 /* Reset the terminal */
393 ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
395 /* Remove signal handlers */
396 sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
397 sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
399 /* Reset the keyboard state */
400 tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
402 /* Return to text mode */
403 TextMode( p_vout->p_sys->i_tty );
406 /* Destroy structure */
407 free( p_vout->p_sys );
410 /*****************************************************************************
411 * NewPicture: allocate a picture
412 *****************************************************************************
413 * Returns 0 on success, -1 otherwise
414 *****************************************************************************/
415 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
417 /* We know the chroma, allocate a buffer which will be used
418 * directly by the decoder */
419 p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
420 if( p_pic->p_sys == NULL )
425 /* Fill in picture_t fields */
426 vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
427 p_vout->output.i_width, p_vout->output.i_height,
428 p_vout->output.i_aspect );
430 p_pic->p_sys->p_data = malloc( p_vout->p_sys->i_page_size );
431 if( !p_pic->p_sys->p_data )
433 free( p_pic->p_sys );
438 p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_data;
440 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
441 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
442 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
444 if( p_vout->p_sys->var_info.xres_virtual )
446 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
447 * p_vout->p_sys->i_bytes_per_pixel;
451 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
452 * p_vout->p_sys->i_bytes_per_pixel;
455 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
456 * p_vout->p_sys->i_bytes_per_pixel;
462 /*****************************************************************************
463 * FreePicture: destroy a picture allocated with NewPicture
464 *****************************************************************************
465 * Destroy Image AND associated data.
466 *****************************************************************************/
467 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
470 free( p_pic->p_sys->p_data );
471 free( p_pic->p_sys );
475 /*****************************************************************************
476 * Init: initialize framebuffer video thread output method
477 *****************************************************************************/
478 static int Init( vout_thread_t *p_vout )
480 vout_sys_t *p_sys = p_vout->p_sys;
482 picture_t *p_pic = NULL;
484 I_OUTPUTPICTURES = 0;
486 p_vout->output.i_width = p_vout->render.i_width;
487 p_vout->output.i_height = p_vout->render.i_height;
488 p_vout->output.i_aspect = p_vout->render.i_aspect;
490 p_vout->fmt_out = p_vout->fmt_in;
491 if( p_sys->i_chroma == 0 )
493 /* Initialize the output structure: RGB with square pixels, whatever
494 * the input format is, since it's the only format we know */
495 switch( p_sys->var_info.bits_per_pixel )
497 case 8: /* FIXME: set the palette */
498 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
500 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
502 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
504 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
506 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
508 msg_Err( p_vout, "unknown screen depth %i",
509 p_vout->p_sys->var_info.bits_per_pixel );
513 if( p_sys->var_info.bits_per_pixel != 8 )
515 p_vout->output.i_rmask = ( (1 << p_sys->var_info.red.length) - 1 )
516 << p_sys->var_info.red.offset;
517 p_vout->output.i_gmask = ( (1 << p_sys->var_info.green.length) - 1 )
518 << p_sys->var_info.green.offset;
519 p_vout->output.i_bmask = ( (1 << p_sys->var_info.blue.length) - 1 )
520 << p_sys->var_info.blue.offset;
525 p_vout->output.i_chroma = p_sys->i_chroma;
527 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
529 p_vout->output.i_width =
530 p_vout->fmt_out.i_width =
531 p_vout->fmt_out.i_visible_width = p_sys->i_width;
532 p_vout->output.i_height =
533 p_vout->fmt_out.i_height =
534 p_vout->fmt_out.i_visible_height = p_sys->i_height;
536 /* Assume we have square pixels */
537 if( p_sys->i_aspect < 0 )
539 p_vout->output.i_aspect = ( p_sys->i_width
540 * VOUT_ASPECT_FACTOR ) / p_sys->i_height;
542 else p_vout->output.i_aspect = p_sys->i_aspect;
544 p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_sar_den = 1;
545 p_vout->fmt_out.i_aspect = p_vout->render.i_aspect = p_vout->output.i_aspect;
546 p_vout->fmt_out.i_x_offset= p_vout->fmt_out.i_y_offset = 0;
548 /* Clear the screen */
549 memset( p_sys->p_video, 0, p_sys->i_page_size );
551 if( !p_sys->b_hw_accel )
553 /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
554 while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
558 /* Find an empty picture slot */
559 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
561 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
563 p_pic = p_vout->p_picture + i_index;
568 /* Allocate the picture */
569 if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
574 p_pic->i_status = DESTROYED_PICTURE;
575 p_pic->i_type = DIRECT_PICTURE;
577 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
584 /* Try to initialize 1 direct buffer */
587 /* Find an empty picture slot */
588 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
590 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
592 p_pic = p_vout->p_picture + i_index;
597 /* Allocate the picture */
603 /* We know the chroma, allocate a buffer which will be used
604 * directly by the decoder */
605 p_pic->p->p_pixels = p_vout->p_sys->p_video;
606 p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
607 p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
608 p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
610 if( p_vout->p_sys->var_info.xres_virtual )
612 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
613 * p_vout->p_sys->i_bytes_per_pixel;
617 p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
618 * p_vout->p_sys->i_bytes_per_pixel;
621 p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
622 * p_vout->p_sys->i_bytes_per_pixel;
624 p_pic->i_status = DESTROYED_PICTURE;
625 p_pic->i_type = DIRECT_PICTURE;
627 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
635 /*****************************************************************************
636 * End: terminate framebuffer video thread output method
637 *****************************************************************************/
638 static void End( vout_thread_t *p_vout )
640 if( !p_vout->p_sys->b_hw_accel )
644 /* Free the direct buffers we allocated */
645 for( i_index = I_OUTPUTPICTURES ; i_index ; )
648 FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
652 /* Clear the screen */
653 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
656 /*****************************************************************************
657 * Control: control facility for the vout
658 *****************************************************************************/
659 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
664 return vout_vaControlDefault( p_vout, i_query, args );
668 /*****************************************************************************
669 * Manage: handle FB events
670 *****************************************************************************
671 * This function should be called regularly by video output thread. It manages
672 * console events. It returns a non null value on error.
673 *****************************************************************************/
674 static int Manage( vout_thread_t *p_vout )
679 if ( read(0, &buf, 1) == 1)
684 vlc_object_kill( p_vout->p_libvlc );
696 if( p_vout->i_changes & VOUT_SIZE_CHANGE )
698 msg_Dbg( p_vout, "reinitializing framebuffer screen" );
699 p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
701 /* Destroy XImages to change their size */
704 /* Recreate XImages. If SysInit failed, the thread can't go on. */
707 msg_Err( p_vout, "cannot reinit framebuffer screen" );
712 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
715 /* Tell the video output thread that it will need to rebuild YUV
716 * tables. This is needed since conversion buffer size may have changed */
717 p_vout->i_changes |= VOUT_YUV_CHANGE;
724 /*****************************************************************************
725 * Display: displays previously rendered output
726 *****************************************************************************
727 * This function send the currently rendered image to FB image, waits until
728 * it is displayed and switch the two rendering buffers, preparing next frame.
729 *****************************************************************************/
730 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
733 /* swap the two Y offsets if the drivers supports panning */
734 if( p_vout->p_sys->b_pan )
736 p_vout->p_sys->var_info.yoffset = 0;
737 /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
739 /* the X offset should be 0, but who knows ...
740 * some other app might have played with the framebuffer */
741 p_vout->p_sys->var_info.xoffset = 0;
745 ioctl( p_vout->p_sys->i_fd,
746 FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
751 if( !p_vout->p_sys->b_hw_accel )
753 vlc_memcpy( p_vout->p_sys->p_video, p_pic->p->p_pixels,
754 p_vout->p_sys->i_page_size );
759 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
760 uint16_t *blue, uint16_t *transp )
762 struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
764 ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
768 /* following functions are local */
770 /*****************************************************************************
771 * OpenDisplay: initialize framebuffer
772 *****************************************************************************/
773 static int OpenDisplay( vout_thread_t *p_vout )
775 vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
776 char *psz_device; /* framebuffer device path */
777 struct fb_fix_screeninfo fix_info; /* framebuffer fix information */
779 /* Open framebuffer device */
780 if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
782 msg_Err( p_vout, "don't know which fb device to open" );
786 p_sys->i_fd = open( psz_device, O_RDWR);
787 if( p_sys->i_fd == -1 )
789 msg_Err( p_vout, "cannot open %s (%m)", psz_device );
796 /* Get framebuffer device information */
797 if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
799 msg_Err( p_vout, "cannot get fb info (%m)" );
800 close( p_sys->i_fd );
804 memcpy( &p_sys->old_info, &p_sys->var_info,
805 sizeof( struct fb_var_screeninfo ) );
807 /* Get some info on the framebuffer itself */
810 p_sys->var_info.xres = p_sys->var_info.xres_virtual = p_sys->i_width;
811 p_sys->var_info.yres = p_sys->var_info.yres_virtual = p_sys->i_height;
812 p_vout->fmt_out.i_width = p_sys->i_width;
813 p_vout->fmt_out.i_height = p_sys->i_height;
816 /* Set some attributes */
817 p_sys->var_info.activate = p_sys->b_tty
818 ? FB_ACTIVATE_NXTOPEN
820 p_sys->var_info.xoffset = 0;
821 p_sys->var_info.yoffset = 0;
823 if( ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->var_info ) )
825 msg_Err( p_vout, "cannot set fb info (%m)" );
826 close( p_sys->i_fd );
830 /* Get some information again, in the definitive configuration */
831 if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
832 || ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
834 msg_Err( p_vout, "cannot get additional fb info (%m)" );
836 /* Restore fb config */
837 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
839 close( p_sys->i_fd );
843 /* If the fb has limitations on mode change,
844 * then keep the resolution of the fb */
845 if( (p_sys->i_height != p_sys->var_info.yres) ||
846 (p_sys->i_width != p_sys->var_info.xres) )
848 p_sys->b_auto = true;
850 "using framebuffer native resolution instead of requested (%ix%i)",
851 p_sys->i_width, p_sys->i_height );
853 p_sys->i_height = p_sys->var_info.yres;
854 p_sys->i_width = p_sys->var_info.xres_virtual
855 ? p_sys->var_info.xres_virtual
856 : p_sys->var_info.xres;
858 /* FIXME: if the image is full-size, it gets cropped on the left
859 * because of the xres / xres_virtual slight difference */
860 msg_Dbg( p_vout, "%ix%i (virtual %ix%i) (request %ix%i)",
861 p_sys->var_info.xres, p_sys->var_info.yres,
862 p_sys->var_info.xres_virtual,
863 p_sys->var_info.yres_virtual,
864 p_sys->i_width, p_sys->i_height );
866 p_sys->p_palette = NULL;
867 p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
869 switch( p_sys->var_info.bits_per_pixel )
872 p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
873 if( !p_sys->p_palette )
875 /* Restore fb config */
876 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
878 close( p_sys->i_fd );
881 p_sys->fb_cmap.start = 0;
882 p_sys->fb_cmap.len = 256;
883 p_sys->fb_cmap.red = p_sys->p_palette;
884 p_sys->fb_cmap.green = p_sys->p_palette + 256 * sizeof( uint16_t );
885 p_sys->fb_cmap.blue = p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
886 p_sys->fb_cmap.transp = p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
888 /* Save the colormap */
889 ioctl( p_sys->i_fd, FBIOGETCMAP, &p_sys->fb_cmap );
891 p_sys->i_bytes_per_pixel = 1;
896 p_sys->i_bytes_per_pixel = 2;
900 p_sys->i_bytes_per_pixel = 3;
904 p_sys->i_bytes_per_pixel = 4;
908 msg_Err( p_vout, "screen depth %d is not supported",
909 p_sys->var_info.bits_per_pixel );
911 /* Restore fb config */
912 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
914 close( p_sys->i_fd );
918 p_sys->i_page_size = p_sys->i_width * p_sys->i_height *
919 p_sys->i_bytes_per_pixel;
921 /* Map a framebuffer at the beginning */
922 p_sys->p_video = mmap( 0, p_sys->i_page_size,
923 PROT_READ | PROT_WRITE, MAP_SHARED,
926 if( p_sys->p_video == ((void*)-1) )
928 msg_Err( p_vout, "cannot map video memory (%m)" );
930 if( p_sys->var_info.bits_per_pixel == 8 )
932 free( p_sys->p_palette );
933 p_sys->p_palette = NULL;
936 /* Restore fb config */
937 ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
939 close( p_sys->i_fd );
943 msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
944 "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
945 fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
949 /*****************************************************************************
950 * CloseDisplay: terminate FB video thread output method
951 *****************************************************************************/
952 static void CloseDisplay( vout_thread_t *p_vout )
955 memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
957 /* Restore palette */
958 if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
960 ioctl( p_vout->p_sys->i_fd,
961 FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
962 free( p_vout->p_sys->p_palette );
963 p_vout->p_sys->p_palette = NULL;
966 /* Restore fb config */
967 ioctl( p_vout->p_sys->i_fd,
968 FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
971 close( p_vout->p_sys->i_fd );
974 /*****************************************************************************
975 * SwitchDisplay: VT change signal handler
976 *****************************************************************************
977 * This function activates or deactivates the output of the thread. It is
978 * called by the VT driver, on terminal change.
979 *****************************************************************************/
980 static void SwitchDisplay( int i_signal )
982 VLC_UNUSED( i_signal );
984 vout_thread_t *p_vout;
986 vlc_mutex_lock( &p_vout_bank->lock );
988 /* XXX: only test the first video output */
989 if( p_vout_bank->i_count )
991 p_vout = p_vout_bank->pp_vout[0];
995 case SIGUSR1: /* vt has been released */
996 p_vout->b_active = 0;
997 ioctl( p_sys->i_tty, VT_RELDISP, 1 );
999 case SIGUSR2: /* vt has been acquired */
1000 p_vout->b_active = 1;
1001 ioctl( p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
1002 /* handle blanking */
1003 vlc_mutex_lock( &p_vout->change_lock );
1004 p_vout->i_changes |= VOUT_SIZE_CHANGE;
1005 vlc_mutex_unlock( &p_vout->change_lock );
1010 vlc_mutex_unlock( &p_vout_bank->lock );
1014 /*****************************************************************************
1015 * TextMode and GfxMode : switch tty to text/graphic mode
1016 *****************************************************************************
1017 * These functions toggle the tty mode.
1018 *****************************************************************************/
1019 static void TextMode( int i_tty )
1021 /* return to text mode */
1022 if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
1024 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
1028 static void GfxMode( int i_tty )
1030 /* switch to graphic mode */
1031 if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
1033 /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/