Fix plugin strings translation
[vlc.git] / modules / video_output / fb.c
1 /*****************************************************************************
2  * fb.c : framebuffer plugin for vlc
3  *****************************************************************************
4  * Copyright (C) 2000, 2001 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.org>
8  *          Jean-Paul Saman
9  *
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.
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 General Public License for more details.
19  *
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  *****************************************************************************/
24
25 /*****************************************************************************
26  * Preamble
27  *****************************************************************************/
28
29 #ifdef HAVE_CONFIG_H
30 # include "config.h"
31 #endif
32
33 #include <errno.h>                                                 /* ENOMEM */
34 #include <signal.h>                                      /* SIGUSR1, SIGUSR2 */
35 #include <fcntl.h>                                                 /* open() */
36 #include <unistd.h>                                               /* close() */
37
38 #include <termios.h>                                       /* struct termios */
39 #include <sys/ioctl.h>
40 #include <sys/mman.h>                                              /* mmap() */
41
42 #include <linux/fb.h>
43 #include <linux/vt.h>                                                /* VT_* */
44 #include <linux/kd.h>                                                 /* KD* */
45
46 #include <vlc_common.h>
47 #include <vlc_plugin.h>
48 #include <vlc_vout.h>
49 #include <vlc_interface.h>
50
51 /*****************************************************************************
52  * Local prototypes
53  *****************************************************************************/
54 static int  Create    ( vlc_object_t * );
55 static void Destroy   ( vlc_object_t * );
56
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 );
62
63 static int  NewPicture     ( vout_thread_t *, picture_t * );
64 static void FreePicture    ( vout_thread_t *, picture_t * );
65
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 );
71
72 #define MAX_DIRECTBUFFERS 1
73
74 /*****************************************************************************
75  * Module descriptor
76  *****************************************************************************/
77 #define FB_DEV_VAR "fbdev"
78
79 #define DEVICE_TEXT N_("Framebuffer device")
80 #define DEVICE_LONGTEXT N_( \
81     "Framebuffer device to use for rendering (usually /dev/fb0).")
82
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)" )
87
88 #define CHROMA_TEXT N_("Chroma used.")
89 #define CHROMA_LONGTEXT N_( \
90     "Force use of a specific chroma for output. Default is I420." )
91
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." )
95
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)" )
100
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 " \
105     "in software." )
106
107 vlc_module_begin ()
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,
112               false )
113     add_bool( "fb-tty", 1, NULL, TTY_TEXT, TTY_LONGTEXT, true )
114     add_string( "fb-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
115                 true )
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,
119                  true )
120     add_bool( "fb-hw-accel", true, NULL, HW_ACCEL_TEXT, HW_ACCEL_LONGTEXT,
121               true )
122     set_description( N_("GNU/Linux framebuffer video output") )
123     set_capability( "video output", 30 )
124     set_callbacks( Create, Destroy )
125 vlc_module_end ()
126
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  *****************************************************************************/
133 struct vout_sys_t
134 {
135     /* System information */
136     int                 i_tty;                          /* tty device handle */
137     bool                b_tty;
138     struct termios      old_termios;
139
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 */
144
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 */
153
154     /* Video information */
155     uint32_t i_width;
156     uint32_t i_height;
157     int      i_aspect;
158     int      i_bytes_per_pixel;
159     bool     b_auto;       /* Automatically adjust video size to fb size */
160     vlc_fourcc_t i_chroma;
161
162     /* Video memory */
163     uint8_t    *p_video;                                      /* base adress */
164     size_t      i_page_size;                                    /* page size */
165 };
166
167 struct picture_sys_t
168 {
169     uint8_t *    p_data;                                      /* base adress */
170 };
171
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 )
178 {
179     vout_thread_t *p_vout = (vout_thread_t *)p_this;
180     vout_sys_t    *p_sys;
181     char          *psz_chroma;
182     char          *psz_aspect;
183     int           i_mode;
184     struct sigaction    sig_tty;                 /* sigaction for tty change */
185     struct vt_mode      vt_mode;                          /* vt current mode */
186     struct termios      new_termios;
187
188     /* Allocate instance and initialize some members */
189     p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
190     if( p_vout->p_sys == NULL )
191         return VLC_ENOMEM;
192     memset( p_sys, 0, sizeof(vout_sys_t) );
193
194     p_vout->pf_init = Init;
195     p_vout->pf_end = End;
196     p_vout->pf_manage = Manage;
197     p_vout->pf_render = NULL;
198     p_vout->pf_display = Display;
199     p_vout->pf_control = Control;
200
201     /* Does the framebuffer uses hw acceleration? */
202     p_sys->b_hw_accel = var_CreateGetBool( p_vout, "fb-hw-accel" );
203
204     /* Set tty and fb devices */
205     p_sys->i_tty = 0; /* 0 == /dev/tty0 == current console */
206     p_sys->b_tty = var_CreateGetBool( p_vout, "fb-tty" );
207 #ifndef WIN32
208 #if defined(HAVE_ISATTY)
209     /* Check that stdin is a TTY */
210     if( p_sys->b_tty && !isatty( 0 ) )
211     {
212         msg_Warn( p_vout, "fd 0 is not a TTY" );
213         return VLC_EGENERIC;
214     }
215     else
216     {
217         msg_Warn( p_vout, "disabling tty handling, use with caution because "
218                           "there is no way to return to the tty." );
219     }
220 #endif
221 #endif
222
223     psz_chroma = var_CreateGetNonEmptyString( p_vout, "fb-chroma" );
224     if( psz_chroma )
225     {
226         if( strlen( psz_chroma ) == 4 )
227         {
228             p_sys->i_chroma = VLC_FOURCC( psz_chroma[0],
229                                    psz_chroma[1],
230                                    psz_chroma[2],
231                                    psz_chroma[3] );
232             msg_Dbg( p_vout, "forcing chroma '%s'", psz_chroma );
233         }
234         else
235         {
236             msg_Warn( p_vout, "invalid chroma (%s), using defaults.",
237                       psz_chroma );
238         }
239         free( psz_chroma );
240         psz_chroma = NULL;
241     }
242
243     p_sys->i_aspect = -1;
244     psz_aspect = var_CreateGetNonEmptyString( p_vout, "fb-aspect-ratio" );
245     if( psz_aspect )
246     {
247         char *psz_parser = strchr( psz_aspect, ':' );
248
249         if( psz_parser )
250         {
251             *psz_parser++ = '\0';
252             p_sys->i_aspect = ( atoi( psz_aspect )
253                               * VOUT_ASPECT_FACTOR ) / atoi( psz_parser );
254         }
255         msg_Dbg( p_vout, "using aspect ratio %d:%d",
256                   atoi( psz_aspect ), atoi( psz_parser ) );
257
258         free( psz_aspect );
259         psz_aspect = NULL;
260     }
261
262     p_sys->b_auto = false;
263     i_mode = var_CreateGetInteger( p_vout, "fb-mode" );
264     switch( i_mode )
265     {
266         case 0: /* QCIF */
267             p_sys->i_width  = 176;
268             p_sys->i_height = 144;
269             break;
270         case 1: /* CIF */
271             p_sys->i_width  = 352;
272             p_sys->i_height = 288;
273             break;
274         case 2: /* NTSC */
275             p_sys->i_width  = 640;
276             p_sys->i_height = 480;
277             break;
278         case 3: /* PAL */
279             p_sys->i_width  = 704;
280             p_sys->i_height = 576;
281             break;
282         case 4:
283         default:
284             p_sys->b_auto = true;
285             break;
286      }
287
288     /* tty handling */
289     if( p_sys->b_tty )
290     {
291         GfxMode( p_sys->i_tty );
292
293         /* Set keyboard settings */
294         if( tcgetattr(0, &p_vout->p_sys->old_termios) == -1 )
295         {
296             msg_Err( p_vout, "tcgetattr failed" );
297         }
298
299         if( tcgetattr(0, &new_termios) == -1 )
300         {
301             msg_Err( p_vout, "tcgetattr failed" );
302         }
303
304         /* new_termios.c_lflag &= ~ (ICANON | ISIG);
305         new_termios.c_lflag |= (ECHO | ECHOCTL); */
306         new_termios.c_lflag &= ~ (ICANON);
307         new_termios.c_lflag &= ~(ECHO | ECHOCTL);
308         new_termios.c_iflag = 0;
309         new_termios.c_cc[VMIN] = 1;
310         new_termios.c_cc[VTIME] = 0;
311
312         if( tcsetattr(0, TCSAFLUSH, &new_termios) == -1 )
313         {
314             msg_Err( p_vout, "tcsetattr failed" );
315         }
316
317         ioctl( p_sys->i_tty, VT_RELDISP, VT_ACKACQ );
318
319         /* Set-up tty signal handler to be aware of tty changes */
320         memset( &sig_tty, 0, sizeof( sig_tty ) );
321         sig_tty.sa_handler = SwitchDisplay;
322         sigemptyset( &sig_tty.sa_mask );
323         if( sigaction( SIGUSR1, &sig_tty, &p_vout->p_sys->sig_usr1 ) ||
324             sigaction( SIGUSR2, &sig_tty, &p_vout->p_sys->sig_usr2 ) )
325         {
326             msg_Err( p_vout, "cannot set signal handler (%m)" );
327             tcsetattr(0, 0, &p_vout->p_sys->old_termios);
328             TextMode( p_sys->i_tty );
329             free( p_vout->p_sys );
330             return VLC_EGENERIC;
331         }
332
333         /* Set-up tty according to new signal handler */
334         if( -1 == ioctl( p_sys->i_tty, VT_GETMODE, &p_vout->p_sys->vt_mode ) )
335         {
336             msg_Err( p_vout, "cannot get terminal mode (%m)" );
337             sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
338             sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
339             tcsetattr(0, 0, &p_vout->p_sys->old_termios);
340             TextMode( p_sys->i_tty );
341             free( p_vout->p_sys );
342             return VLC_EGENERIC;
343         }
344         memcpy( &vt_mode, &p_vout->p_sys->vt_mode, sizeof( vt_mode ) );
345         vt_mode.mode   = VT_PROCESS;
346         vt_mode.waitv  = 0;
347         vt_mode.relsig = SIGUSR1;
348         vt_mode.acqsig = SIGUSR2;
349
350         if( -1 == ioctl( p_sys->i_tty, VT_SETMODE, &vt_mode ) )
351         {
352             msg_Err( p_vout, "cannot set terminal mode (%m)" );
353             sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
354             sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
355             tcsetattr(0, 0, &p_vout->p_sys->old_termios);
356             TextMode( p_sys->i_tty );
357             free( p_vout->p_sys );
358             return VLC_EGENERIC;
359         }
360     }
361
362     if( OpenDisplay( p_vout ) )
363     {
364         if( p_sys->b_tty )
365         {
366             ioctl( p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
367             sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
368             sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
369             tcsetattr(0, 0, &p_vout->p_sys->old_termios);
370             TextMode( p_sys->i_tty );
371         }
372         free( p_vout->p_sys );
373         return VLC_EGENERIC;
374     }
375
376     return VLC_SUCCESS;
377 }
378
379
380 /*****************************************************************************
381  * Destroy: destroy FB video thread output method
382  *****************************************************************************
383  * Terminate an output method created by Create
384  *****************************************************************************/
385 static void Destroy( vlc_object_t *p_this )
386 {
387     vout_thread_t *p_vout = (vout_thread_t *)p_this;
388
389     CloseDisplay( p_vout );
390
391     if( p_vout->p_sys->b_tty )
392     {
393         /* Reset the terminal */
394         ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
395
396         /* Remove signal handlers */
397         sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
398         sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
399
400         /* Reset the keyboard state */
401         tcsetattr( 0, 0, &p_vout->p_sys->old_termios );
402
403         /* Return to text mode */
404         TextMode( p_vout->p_sys->i_tty );
405     }
406
407     /* Destroy structure */
408     free( p_vout->p_sys );
409 }
410
411 /*****************************************************************************
412  * NewPicture: allocate a picture
413  *****************************************************************************
414  * Returns 0 on success, -1 otherwise
415  *****************************************************************************/
416 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
417 {
418     /* We know the chroma, allocate a buffer which will be used
419      * directly by the decoder */
420     p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
421     if( p_pic->p_sys == NULL )
422     {
423         return VLC_ENOMEM;
424     }
425
426     /* Fill in picture_t fields */
427     vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
428                       p_vout->output.i_width, p_vout->output.i_height,
429                       p_vout->output.i_aspect );
430
431     p_pic->p_sys->p_data = malloc( p_vout->p_sys->i_page_size );
432     if( !p_pic->p_sys->p_data )
433     {
434         free( p_pic->p_sys );
435         p_pic->p_sys = NULL;
436         return VLC_ENOMEM;
437     }
438
439     p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_data;
440
441     p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
442     p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
443     p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
444
445     if( p_vout->p_sys->var_info.xres_virtual )
446     {
447         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
448                              * p_vout->p_sys->i_bytes_per_pixel;
449     }
450     else
451     {
452         p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
453                              * p_vout->p_sys->i_bytes_per_pixel;
454     }
455
456     p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
457                                  * p_vout->p_sys->i_bytes_per_pixel;
458     p_pic->i_planes = 1;
459
460     return VLC_SUCCESS;
461 }
462
463 /*****************************************************************************
464  * FreePicture: destroy a picture allocated with NewPicture
465  *****************************************************************************
466  * Destroy Image AND associated data.
467  *****************************************************************************/
468 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
469 {
470     VLC_UNUSED(p_vout);
471     free( p_pic->p_sys->p_data );
472     free( p_pic->p_sys );
473     p_pic->p_sys = NULL;
474 }
475
476 /*****************************************************************************
477  * Init: initialize framebuffer video thread output method
478  *****************************************************************************/
479 static int Init( vout_thread_t *p_vout )
480 {
481     vout_sys_t *p_sys = p_vout->p_sys;
482     int i_index;
483     picture_t *p_pic = NULL;
484
485     I_OUTPUTPICTURES = 0;
486
487     p_vout->output.i_width  = p_vout->render.i_width;
488     p_vout->output.i_height = p_vout->render.i_height;
489     p_vout->output.i_aspect = p_vout->render.i_aspect;
490
491     p_vout->fmt_out = p_vout->fmt_in;
492     if( p_sys->i_chroma == 0 )
493     {
494         /* Initialize the output structure: RGB with square pixels, whatever
495          * the input format is, since it's the only format we know */
496         switch( p_sys->var_info.bits_per_pixel )
497         {
498         case 8: /* FIXME: set the palette */
499             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
500         case 15:
501             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
502         case 16:
503             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
504         case 24:
505             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
506         case 32:
507             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
508         default:
509             msg_Err( p_vout, "unknown screen depth %i",
510                      p_vout->p_sys->var_info.bits_per_pixel );
511             return VLC_EGENERIC;
512         }
513
514         if( p_sys->var_info.bits_per_pixel != 8 )
515         {
516             p_vout->output.i_rmask = ( (1 << p_sys->var_info.red.length) - 1 )
517                                  << p_sys->var_info.red.offset;
518             p_vout->output.i_gmask = ( (1 << p_sys->var_info.green.length) - 1 )
519                                  << p_sys->var_info.green.offset;
520             p_vout->output.i_bmask = ( (1 << p_sys->var_info.blue.length) - 1 )
521                                  << p_sys->var_info.blue.offset;
522         }
523     }
524     else
525     {
526         p_vout->output.i_chroma = p_sys->i_chroma;
527     }
528     p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
529
530     p_vout->output.i_width =
531     p_vout->fmt_out.i_width =
532     p_vout->fmt_out.i_visible_width = p_sys->i_width;
533     p_vout->output.i_height =
534     p_vout->fmt_out.i_height =
535     p_vout->fmt_out.i_visible_height = p_sys->i_height;
536
537     /* Assume we have square pixels */
538     if( p_sys->i_aspect < 0 )
539     {
540         p_vout->output.i_aspect = ( p_sys->i_width
541                                   * VOUT_ASPECT_FACTOR ) / p_sys->i_height;
542     }
543     else p_vout->output.i_aspect = p_sys->i_aspect;
544
545     p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_sar_den = 1;
546     p_vout->fmt_out.i_aspect  = p_vout->render.i_aspect = p_vout->output.i_aspect;
547     p_vout->fmt_out.i_x_offset= p_vout->fmt_out.i_y_offset = 0;
548
549     /* Clear the screen */
550     memset( p_sys->p_video, 0, p_sys->i_page_size );
551
552     if( !p_sys->b_hw_accel )
553     {
554         /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
555         while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
556         {
557             p_pic = NULL;
558
559             /* Find an empty picture slot */
560             for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
561             {
562                 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
563                 {
564                     p_pic = p_vout->p_picture + i_index;
565                     break;
566                 }
567             }
568
569             /* Allocate the picture */
570             if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
571             {
572                 break;
573             }
574
575             p_pic->i_status = DESTROYED_PICTURE;
576             p_pic->i_type   = DIRECT_PICTURE;
577
578             PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
579
580             I_OUTPUTPICTURES++;
581         }
582     }
583     else
584     {
585         /* Try to initialize 1 direct buffer */
586         p_pic = NULL;
587
588         /* Find an empty picture slot */
589         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
590         {
591             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
592             {
593                 p_pic = p_vout->p_picture + i_index;
594                 break;
595             }
596         }
597
598         /* Allocate the picture */
599         if( p_pic == NULL )
600         {
601             return VLC_EGENERIC;
602         }
603
604         /* We know the chroma, allocate a buffer which will be used
605         * directly by the decoder */
606         p_pic->p->p_pixels = p_vout->p_sys->p_video;
607         p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
608         p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
609         p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;
610
611         if( p_vout->p_sys->var_info.xres_virtual )
612         {
613             p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
614                                 * p_vout->p_sys->i_bytes_per_pixel;
615         }
616         else
617         {
618             p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
619                                 * p_vout->p_sys->i_bytes_per_pixel;
620         }
621
622         p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
623                                     * p_vout->p_sys->i_bytes_per_pixel;
624         p_pic->i_planes = 1;
625         p_pic->i_status = DESTROYED_PICTURE;
626         p_pic->i_type   = DIRECT_PICTURE;
627
628         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
629
630         I_OUTPUTPICTURES++;
631     }
632
633     return VLC_SUCCESS;
634 }
635
636 /*****************************************************************************
637  * End: terminate framebuffer video thread output method
638  *****************************************************************************/
639 static void End( vout_thread_t *p_vout )
640 {
641     if( !p_vout->p_sys->b_hw_accel )
642     {
643         int i_index;
644
645         /* Free the direct buffers we allocated */
646         for( i_index = I_OUTPUTPICTURES ; i_index ; )
647         {
648             i_index--;
649             FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
650         }
651
652     }
653     /* Clear the screen */
654     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
655 }
656
657 /*****************************************************************************
658  * Control: control facility for the vout
659  *****************************************************************************/
660 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
661 {
662     switch( i_query )
663     {
664        default:
665             return vout_vaControlDefault( p_vout, i_query, args );
666     }
667 }
668
669 /*****************************************************************************
670  * Manage: handle FB events
671  *****************************************************************************
672  * This function should be called regularly by video output thread. It manages
673  * console events. It returns a non null value on error.
674  *****************************************************************************/
675 static int Manage( vout_thread_t *p_vout )
676 {
677 #if 0
678     uint8_t buf;
679
680     if ( read(0, &buf, 1) == 1)
681     {
682         switch( buf )
683         {
684         case 'q':
685             libvlc_Quit( p_vout->p_libvlc );
686             break;
687
688         default:
689             break;
690         }
691     }
692 #endif
693
694     /*
695      * Size change
696      */
697     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
698     {
699         msg_Dbg( p_vout, "reinitializing framebuffer screen" );
700         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
701
702         /* Destroy XImages to change their size */
703         End( p_vout );
704
705         /* Recreate XImages. If SysInit failed, the thread can't go on. */
706         if( Init( p_vout ) )
707         {
708             msg_Err( p_vout, "cannot reinit framebuffer screen" );
709             return VLC_EGENERIC;
710         }
711
712         /* Clear screen */
713         memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
714
715 #if 0
716         /* Tell the video output thread that it will need to rebuild YUV
717          * tables. This is needed since conversion buffer size may have changed */
718         p_vout->i_changes |= VOUT_YUV_CHANGE;
719 #endif
720     }
721
722     return VLC_SUCCESS;
723 }
724
725 /*****************************************************************************
726  * Display: displays previously rendered output
727  *****************************************************************************
728  * This function send the currently rendered image to FB image, waits until
729  * it is displayed and switch the two rendering buffers, preparing next frame.
730  *****************************************************************************/
731 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
732 {
733 static int panned=0;
734     /* swap the two Y offsets if the drivers supports panning */
735     if( p_vout->p_sys->b_pan )
736     {
737         p_vout->p_sys->var_info.yoffset = 0;
738         /*p_vout->p_sys->var_info.yoffset = p_vout->p_sys->var_info.yres; */
739
740         /* the X offset should be 0, but who knows ...
741          * some other app might have played with the framebuffer */
742         p_vout->p_sys->var_info.xoffset = 0;
743
744         if( panned < 0 )
745         {
746             ioctl( p_vout->p_sys->i_fd,
747                    FBIOPAN_DISPLAY, &p_vout->p_sys->var_info );
748             panned++;
749         }
750     }
751
752     if( !p_vout->p_sys->b_hw_accel )
753     {
754         vlc_memcpy( p_vout->p_sys->p_video, p_pic->p->p_pixels,
755                     p_vout->p_sys->i_page_size );
756     }
757 }
758
759 #if 0
760 static void SetPalette( vout_thread_t *p_vout, uint16_t *red, uint16_t *green,
761                                                uint16_t *blue, uint16_t *transp )
762 {
763     struct fb_cmap cmap = { 0, 256, red, green, blue, transp };
764
765     ioctl( p_vout->p_sys->i_fd, FBIOPUTCMAP, &cmap );
766 }
767 #endif
768
769 /* following functions are local */
770
771 /*****************************************************************************
772  * OpenDisplay: initialize framebuffer
773  *****************************************************************************/
774 static int OpenDisplay( vout_thread_t *p_vout )
775 {
776     vout_sys_t *p_sys = (vout_sys_t *) p_vout->p_sys;
777     char *psz_device;                             /* framebuffer device path */
778     struct fb_fix_screeninfo    fix_info;     /* framebuffer fix information */
779
780     /* Open framebuffer device */
781     if( !(psz_device = config_GetPsz( p_vout, FB_DEV_VAR )) )
782     {
783         msg_Err( p_vout, "don't know which fb device to open" );
784         return VLC_EGENERIC;
785     }
786
787     p_sys->i_fd = open( psz_device, O_RDWR);
788     if( p_sys->i_fd == -1 )
789     {
790         msg_Err( p_vout, "cannot open %s (%m)", psz_device );
791         free( psz_device );
792         return VLC_EGENERIC;
793     }
794     free( psz_device );
795     psz_device = NULL;
796
797     /* Get framebuffer device information */
798     if( ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
799     {
800         msg_Err( p_vout, "cannot get fb info (%m)" );
801         close( p_sys->i_fd );
802         return VLC_EGENERIC;
803     }
804
805     memcpy( &p_sys->old_info, &p_sys->var_info,
806             sizeof( struct fb_var_screeninfo ) );
807
808     /* Get some info on the framebuffer itself */
809     if( !p_sys->b_auto )
810     {
811         p_sys->var_info.xres = p_sys->var_info.xres_virtual = p_sys->i_width;
812         p_sys->var_info.yres = p_sys->var_info.yres_virtual = p_sys->i_height;
813         p_vout->fmt_out.i_width = p_sys->i_width;
814         p_vout->fmt_out.i_height = p_sys->i_height;
815     }
816
817     /* Set some attributes */
818     p_sys->var_info.activate = p_sys->b_tty
819                                ? FB_ACTIVATE_NXTOPEN
820                                : FB_ACTIVATE_NOW;
821     p_sys->var_info.xoffset =  0;
822     p_sys->var_info.yoffset =  0;
823
824     if( ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->var_info ) )
825     {
826         msg_Err( p_vout, "cannot set fb info (%m)" );
827         close( p_sys->i_fd );
828         return VLC_EGENERIC;
829     }
830
831     /* Get some information again, in the definitive configuration */
832     if( ioctl( p_sys->i_fd, FBIOGET_FSCREENINFO, &fix_info )
833          || ioctl( p_sys->i_fd, FBIOGET_VSCREENINFO, &p_sys->var_info ) )
834     {
835         msg_Err( p_vout, "cannot get additional fb info (%m)" );
836
837         /* Restore fb config */
838         ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
839
840         close( p_sys->i_fd );
841         return VLC_EGENERIC;
842     }
843
844     /* If the fb has limitations on mode change,
845      * then keep the resolution of the fb */
846     if( (p_sys->i_height != p_sys->var_info.yres) ||
847         (p_sys->i_width != p_sys->var_info.xres) )
848     {
849         p_sys->b_auto = true;
850         msg_Warn( p_vout,
851                   "using framebuffer native resolution instead of requested (%ix%i)",
852                   p_sys->i_width, p_sys->i_height );
853     }
854     p_sys->i_height = p_sys->var_info.yres;
855     p_sys->i_width  = p_sys->var_info.xres_virtual
856                                ? p_sys->var_info.xres_virtual
857                                : p_sys->var_info.xres;
858
859     /* FIXME: if the image is full-size, it gets cropped on the left
860      * because of the xres / xres_virtual slight difference */
861     msg_Dbg( p_vout, "%ix%i (virtual %ix%i) (request %ix%i)",
862              p_sys->var_info.xres, p_sys->var_info.yres,
863              p_sys->var_info.xres_virtual,
864              p_sys->var_info.yres_virtual,
865              p_sys->i_width, p_sys->i_height );
866
867     p_sys->p_palette = NULL;
868     p_sys->b_pan = ( fix_info.ypanstep || fix_info.ywrapstep );
869
870     switch( p_sys->var_info.bits_per_pixel )
871     {
872     case 8:
873         p_sys->p_palette = malloc( 8 * 256 * sizeof( uint16_t ) );
874         if( !p_sys->p_palette )
875         {
876             /* Restore fb config */
877             ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
878
879             close( p_sys->i_fd );
880             return VLC_ENOMEM;
881         }
882         p_sys->fb_cmap.start = 0;
883         p_sys->fb_cmap.len = 256;
884         p_sys->fb_cmap.red = p_sys->p_palette;
885         p_sys->fb_cmap.green = p_sys->p_palette + 256 * sizeof( uint16_t );
886         p_sys->fb_cmap.blue = p_sys->p_palette + 2 * 256 * sizeof( uint16_t );
887         p_sys->fb_cmap.transp = p_sys->p_palette + 3 * 256 * sizeof( uint16_t );
888
889         /* Save the colormap */
890         ioctl( p_sys->i_fd, FBIOGETCMAP, &p_sys->fb_cmap );
891
892         p_sys->i_bytes_per_pixel = 1;
893         break;
894
895     case 15:
896     case 16:
897         p_sys->i_bytes_per_pixel = 2;
898         break;
899
900     case 24:
901         p_sys->i_bytes_per_pixel = 3;
902         break;
903
904     case 32:
905         p_sys->i_bytes_per_pixel = 4;
906         break;
907
908     default:
909         msg_Err( p_vout, "screen depth %d is not supported",
910                          p_sys->var_info.bits_per_pixel );
911
912         /* Restore fb config */
913         ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_sys->old_info );
914
915         close( p_sys->i_fd );
916         return VLC_EGENERIC;
917     }
918
919     p_sys->i_page_size = p_sys->i_width * p_sys->i_height *
920                          p_sys->i_bytes_per_pixel;
921
922     /* Map a framebuffer at the beginning */
923     p_sys->p_video = mmap( 0, p_sys->i_page_size,
924                               PROT_READ | PROT_WRITE, MAP_SHARED,
925                               p_sys->i_fd, 0 );
926
927     if( p_sys->p_video == ((void*)-1) )
928     {
929         msg_Err( p_vout, "cannot map video memory (%m)" );
930
931         if( p_sys->var_info.bits_per_pixel == 8 )
932         {
933             free( p_sys->p_palette );
934             p_sys->p_palette = NULL;
935         }
936
937         /* Restore fb config */
938         ioctl( p_sys->i_fd, FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
939
940         close( p_sys->i_fd );
941         return VLC_EGENERIC;
942     }
943
944     msg_Dbg( p_vout, "framebuffer type=%d, visual=%d, ypanstep=%d, "
945              "ywrap=%d, accel=%d", fix_info.type, fix_info.visual,
946              fix_info.ypanstep, fix_info.ywrapstep, fix_info.accel );
947     return VLC_SUCCESS;
948 }
949
950 /*****************************************************************************
951  * CloseDisplay: terminate FB video thread output method
952  *****************************************************************************/
953 static void CloseDisplay( vout_thread_t *p_vout )
954 {
955     /* Clear display */
956     memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
957
958     /* Restore palette */
959     if( p_vout->p_sys->var_info.bits_per_pixel == 8 )
960     {
961         ioctl( p_vout->p_sys->i_fd,
962                FBIOPUTCMAP, &p_vout->p_sys->fb_cmap );
963         free( p_vout->p_sys->p_palette );
964         p_vout->p_sys->p_palette = NULL;
965     }
966
967     /* Restore fb config */
968     ioctl( p_vout->p_sys->i_fd,
969            FBIOPUT_VSCREENINFO, &p_vout->p_sys->old_info );
970
971     /* Close fb */
972     close( p_vout->p_sys->i_fd );
973 }
974
975 /*****************************************************************************
976  * SwitchDisplay: VT change signal handler
977  *****************************************************************************
978  * This function activates or deactivates the output of the thread. It is
979  * called by the VT driver, on terminal change.
980  *****************************************************************************/
981 static void SwitchDisplay( int i_signal )
982 {
983     VLC_UNUSED( i_signal );
984 #if 0
985     vout_thread_t *p_vout;
986
987     vlc_mutex_lock( &p_vout_bank->lock );
988
989     /* XXX: only test the first video output */
990     if( p_vout_bank->i_count )
991     {
992         p_vout = p_vout_bank->pp_vout[0];
993
994         switch( i_signal )
995         {
996         case SIGUSR1:                                /* vt has been released */
997             p_vout->b_active = 0;
998             ioctl( p_sys->i_tty, VT_RELDISP, 1 );
999             break;
1000         case SIGUSR2:                                /* vt has been acquired */
1001             p_vout->b_active = 1;
1002             ioctl( p_sys->i_tty, VT_RELDISP, VT_ACTIVATE );
1003             /* handle blanking */
1004             vlc_mutex_lock( &p_vout->change_lock );
1005             p_vout->i_changes |= VOUT_SIZE_CHANGE;
1006             vlc_mutex_unlock( &p_vout->change_lock );
1007             break;
1008         }
1009     }
1010
1011     vlc_mutex_unlock( &p_vout_bank->lock );
1012 #endif
1013 }
1014
1015 /*****************************************************************************
1016  * TextMode and GfxMode : switch tty to text/graphic mode
1017  *****************************************************************************
1018  * These functions toggle the tty mode.
1019  *****************************************************************************/
1020 static void TextMode( int i_tty )
1021 {
1022     /* return to text mode */
1023     if( -1 == ioctl(i_tty, KDSETMODE, KD_TEXT) )
1024     {
1025         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_TEXT" );*/
1026     }
1027 }
1028
1029 static void GfxMode( int i_tty )
1030 {
1031     /* switch to graphic mode */
1032     if( -1 == ioctl(i_tty, KDSETMODE, KD_GRAPHICS) )
1033     {
1034         /*msg_Err( p_vout, "failed ioctl KDSETMODE KD_GRAPHICS" );*/
1035     }
1036 }