1 /*****************************************************************************
2 * wall.c : Wall video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
37 #include "filter_common.h"
39 /*****************************************************************************
41 *****************************************************************************/
42 static int Create ( vlc_object_t * );
43 static void Destroy ( vlc_object_t * );
45 static int Init ( vout_thread_t * );
46 static void End ( vout_thread_t * );
47 static void Render ( vout_thread_t *, picture_t * );
49 static void RemoveAllVout ( vout_thread_t *p_vout );
51 static int MouseEvent( vlc_object_t *, char const *,
52 vlc_value_t, vlc_value_t, void * );
53 static int FullscreenEventUp( vlc_object_t *, char const *,
54 vlc_value_t, vlc_value_t, void * );
55 static int FullscreenEventDown( vlc_object_t *, char const *,
56 vlc_value_t, vlc_value_t, void * );
58 /*****************************************************************************
60 *****************************************************************************/
61 #define COLS_TEXT N_("Number of columns")
62 #define COLS_LONGTEXT N_("Number of horizontal windows in " \
63 "which to split the video.")
65 #define ROWS_TEXT N_("Number of rows")
66 #define ROWS_LONGTEXT N_("Number of vertical windows in " \
67 "which to split the video.")
69 #define ACTIVE_TEXT N_("Active windows")
70 #define ACTIVE_LONGTEXT N_("Comma-separated list of active windows, " \
73 #define ASPECT_TEXT N_("Element aspect ratio")
74 #define ASPECT_LONGTEXT N_("Aspect ratio of the individual displays " \
77 #define CFG_PREFIX "wall-"
80 set_description( N_("Wall video filter") )
81 set_shortname( N_("Image wall" ))
82 set_capability( "video filter", 0 )
83 set_category( CAT_VIDEO )
84 set_subcategory( SUBCAT_VIDEO_VFILTER )
86 add_integer( CFG_PREFIX "cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT, false )
87 add_integer( CFG_PREFIX "rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT, false )
88 add_string( CFG_PREFIX "active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT,
90 add_string( CFG_PREFIX "element-aspect", "4:3", NULL, ASPECT_TEXT, ASPECT_LONGTEXT, false )
92 add_shortcut( "wall" )
93 set_callbacks( Create, Destroy )
96 static const char *const ppsz_filter_options[] = {
97 "cols", "rows", "active", "element-aspect", NULL
100 /*****************************************************************************
101 * vout_sys_t: Wall video output method descriptor
102 *****************************************************************************
103 * This structure is part of the video output thread descriptor.
104 * It describes the Wall specific properties of an output thread.
105 *****************************************************************************/
118 vout_thread_t *p_vout;
122 /*****************************************************************************
123 * Control: control facility for the vout (forwards to child vout)
124 *****************************************************************************/
125 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
127 int i_row, i_col, i_vout = 0;
129 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
131 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
133 vout_vaControl( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
141 /*****************************************************************************
142 * Create: allocates Wall video thread output method
143 *****************************************************************************
144 * This function allocates and initializes a Wall vout method.
145 *****************************************************************************/
146 static int Create( vlc_object_t *p_this )
148 vout_thread_t *p_vout = (vout_thread_t *)p_this;
149 char *psz_method, *psz_tmp, *psz_method_tmp;
152 /* Allocate structure */
153 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
154 if( p_vout->p_sys == NULL )
157 p_vout->pf_init = Init;
158 p_vout->pf_end = End;
159 p_vout->pf_manage = NULL;
160 p_vout->pf_render = Render;
161 p_vout->pf_display = NULL;
162 p_vout->pf_control = Control;
164 config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
167 /* Look what method was requested */
168 p_vout->p_sys->i_col = var_CreateGetInteger( p_vout, CFG_PREFIX "cols" );
169 p_vout->p_sys->i_row = var_CreateGetInteger( p_vout, CFG_PREFIX "rows" );
171 p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
172 p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
174 msg_Dbg( p_vout, "opening a %i x %i wall",
175 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
177 p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
178 p_vout->p_sys->i_col *
179 sizeof(struct vout_list_t) );
180 if( p_vout->p_sys->pp_vout == NULL )
182 free( p_vout->p_sys );
187 psz_method = var_CreateGetNonEmptyString( p_vout, CFG_PREFIX "active" );
189 /* If no trailing vout are specified, take them all */
190 if( psz_method == NULL )
192 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
195 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
198 /* If trailing vout are specified, activate only the requested ones */
201 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
204 p_vout->p_sys->pp_vout[i_vout].b_active = 0;
209 psz_tmp = psz_method;
210 while( *psz_tmp && *psz_tmp != ',' )
218 i_vout = atoi( psz_method );
219 psz_method = psz_tmp + 1;
223 i_vout = atoi( psz_method );
224 psz_method = psz_tmp;
228 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
230 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
235 free( psz_method_tmp );
240 /*****************************************************************************
241 * Init: initialize Wall video thread output method
242 *****************************************************************************/
243 static int Init( vout_thread_t *p_vout )
245 int i_row, i_col, i_width, i_height, i_left, i_top;
246 unsigned int i_target_width,i_target_height;
248 int i_aspect = 4*VOUT_ASPECT_FACTOR/3;
250 unsigned int i_hstart, i_hend, i_vstart, i_vend;
251 unsigned int w1,h1,w2,h2;
253 int i_vstart_rounded = 0, i_hstart_rounded = 0;
256 memset( &fmt, 0, sizeof(video_format_t) );
258 psz_aspect = var_CreateGetNonEmptyString( p_vout,
259 CFG_PREFIX "element-aspect" );
260 if( psz_aspect && *psz_aspect )
262 char *psz_parser = strchr( psz_aspect, ':' );
265 *psz_parser++ = '\0';
266 i_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
267 / atoi( psz_parser );
271 msg_Warn( p_vout, "invalid aspect ratio specification" );
276 i_xpos = var_CreateGetInteger( p_vout, "video-x" );
277 i_ypos = var_CreateGetInteger( p_vout, "video-y" );
278 if( i_xpos < 0 ) i_xpos = 0;
279 if( i_ypos < 0 ) i_ypos = 0;
281 I_OUTPUTPICTURES = 0;
283 /* Initialize the output structure */
284 p_vout->output.i_chroma = p_vout->render.i_chroma;
285 p_vout->output.i_width = p_vout->render.i_width;
286 p_vout->output.i_height = p_vout->render.i_height;
287 p_vout->output.i_aspect = p_vout->render.i_aspect;
288 var_Create( p_vout, "align", VLC_VAR_INTEGER );
290 fmt.i_width = fmt.i_visible_width = p_vout->render.i_width;
291 fmt.i_height = fmt.i_visible_height = p_vout->render.i_height;
292 fmt.i_x_offset = fmt.i_y_offset = 0;
293 fmt.i_chroma = p_vout->render.i_chroma;
294 fmt.i_aspect = p_vout->render.i_aspect;
295 fmt.i_sar_num = p_vout->render.i_aspect * fmt.i_height / fmt.i_width;
296 fmt.i_sar_den = VOUT_ASPECT_FACTOR;
298 w1 = p_vout->output.i_width / p_vout->p_sys->i_col;
300 h1 = w1 * VOUT_ASPECT_FACTOR / i_aspect&~1;
303 h2 = p_vout->output.i_height / p_vout->p_sys->i_row&~1;
305 w2 = h2 * i_aspect / VOUT_ASPECT_FACTOR&~1;
308 if ( h1 * p_vout->p_sys->i_row < p_vout->output.i_height )
312 i_target_height = h2;
314 i_vend = p_vout->output.i_height;
315 i_tmp = i_target_width * p_vout->p_sys->i_col;
316 while( i_tmp < p_vout->output.i_width ) i_tmp += p_vout->p_sys->i_col;
317 i_hstart = (( i_tmp - p_vout->output.i_width ) / 2)&~1;
318 i_hstart_rounded = ( ( i_tmp - p_vout->output.i_width ) % 2 ) ||
319 ( ( ( i_tmp - p_vout->output.i_width ) / 2 ) & 1 );
320 i_hend = i_hstart + p_vout->output.i_width;
325 i_target_height = h1;
328 i_hend = p_vout->output.i_width;
329 i_tmp = i_target_height * p_vout->p_sys->i_row;
330 while( i_tmp < p_vout->output.i_height ) i_tmp += p_vout->p_sys->i_row;
331 i_vstart = ( ( i_tmp - p_vout->output.i_height ) / 2 ) & ~1;
332 i_vstart_rounded = ( ( i_tmp - p_vout->output.i_height ) % 2 ) ||
333 ( ( ( i_tmp - p_vout->output.i_height ) / 2 ) & 1 );
334 i_vend = i_vstart + p_vout->output.i_height;
336 msg_Dbg( p_vout, "target resolution %dx%d", i_target_width, i_target_height );
338 /* Try to open the real video output */
339 msg_Dbg( p_vout, "spawning the real video outputs" );
341 p_vout->p_sys->i_vout = 0;
342 msg_Dbg( p_vout, "target window (%d,%d)-(%d,%d)", i_hstart,i_vstart,i_hend,i_vend );
347 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
351 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
355 if( i_col*i_target_width >= i_hstart &&
356 (i_col+1)*i_target_width <= i_hend )
358 i_width = i_target_width;
360 else if( ( i_col + 1 ) * i_target_width < i_hstart ||
361 ( i_col * i_target_width ) > i_hend )
367 i_width = ( i_target_width - i_hstart % i_target_width );
368 if( i_col >= ( p_vout->p_sys->i_col / 2 ) )
370 i_align |= VOUT_ALIGN_LEFT;
371 i_width -= i_hstart_rounded ? 2: 0;
375 i_align |= VOUT_ALIGN_RIGHT;
379 if( i_row * i_target_height >= i_vstart &&
380 ( i_row + 1 ) * i_target_height <= i_vend )
382 i_height = i_target_height;
384 else if( ( i_row + 1 ) * i_target_height < i_vstart ||
385 ( i_row * i_target_height ) > i_vend )
391 i_height = ( i_target_height -
392 i_vstart%i_target_height );
393 if( i_row >= ( p_vout->p_sys->i_row / 2 ) )
395 i_align |= VOUT_ALIGN_TOP;
396 i_height -= i_vstart_rounded ? 2: 0;
400 i_align |= VOUT_ALIGN_BOTTOM;
403 if( i_height == 0 || i_width == 0 )
405 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active = false;
408 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
409 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
410 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_left = i_left;
411 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_top = i_top;
414 if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
416 p_vout->p_sys->i_vout++;
419 var_SetInteger( p_vout, "align", i_align );
420 var_SetInteger( p_vout, "video-x", i_left + i_xpos - i_width);
421 var_SetInteger( p_vout, "video-y", i_top + i_ypos );
423 fmt.i_width = fmt.i_visible_width = i_width;
424 fmt.i_height = fmt.i_visible_height = i_height;
425 fmt.i_aspect = i_aspect * i_target_height / i_height *
426 i_width / i_target_width;
428 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
429 vout_Create( p_vout, &fmt );
430 if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout )
432 msg_Err( p_vout, "failed to get %ix%i vout threads",
433 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
434 RemoveAllVout( p_vout );
437 vout_filter_SetupChild( p_vout, p_vout->p_sys->pp_vout[p_vout->p_sys->i_vout].p_vout,
438 MouseEvent, FullscreenEventUp, FullscreenEventDown, true );
439 p_vout->p_sys->i_vout++;
443 vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );
448 /*****************************************************************************
449 * End: terminate Wall video thread output method
450 *****************************************************************************/
451 static void End( vout_thread_t *p_vout )
453 RemoveAllVout( p_vout );
455 vout_filter_ReleaseDirectBuffers( p_vout );
458 /*****************************************************************************
459 * Destroy: destroy Wall video thread output method
460 *****************************************************************************
461 * Terminate an output method created by WallCreateOutputMethod
462 *****************************************************************************/
463 static void Destroy( vlc_object_t *p_this )
465 vout_thread_t *p_vout = (vout_thread_t *)p_this;
468 free( p_vout->p_sys->pp_vout );
469 free( p_vout->p_sys );
472 /*****************************************************************************
473 * Render: displays previously rendered output
474 *****************************************************************************
475 * This function send the currently rendered image to Wall image, waits
476 * until it is displayed and switch the two rendering buffers, preparing next
478 *****************************************************************************/
479 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
481 picture_t *p_outpic = NULL;
482 int i_col, i_row, i_vout, i_plane;
483 int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
487 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
489 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
491 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
493 pi_left_skip[i_plane] = p_vout->p_sys->pp_vout[ i_vout ].i_left * p_pic->p[ i_plane ].i_pitch / p_vout->output.i_width;
494 pi_top_skip[i_plane] = (p_vout->p_sys->pp_vout[ i_vout ].i_top * p_pic->p[ i_plane ].i_lines / p_vout->output.i_height)*p_pic->p[i_plane].i_pitch;
497 if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
504 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
508 if( !vlc_object_alive (p_vout) || p_vout->b_error )
511 p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
515 msleep( VOUT_OUTMEM_SLEEP );
517 p_outpic->date = p_pic->date;
519 vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
522 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
524 uint8_t *p_in, *p_in_end, *p_out;
525 int i_in_pitch = p_pic->p[i_plane].i_pitch;
526 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
527 int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
529 p_in = p_pic->p[i_plane].p_pixels
530 + pi_top_skip[i_plane] + pi_left_skip[i_plane];
532 p_in_end = p_in + p_outpic->p[i_plane].i_visible_lines
533 * p_pic->p[i_plane].i_pitch;
535 p_out = p_outpic->p[i_plane].p_pixels;
537 while( p_in < p_in_end )
539 vlc_memcpy( p_out, p_in, i_copy_pitch );
541 p_out += i_out_pitch;
544 // pi_left_skip[i_plane] += i_copy_pitch;
547 vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
549 vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
555 /* for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ ) */
557 /* pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height */
558 /* * p_pic->p[i_plane].i_visible_lines */
559 /* / p_vout->output.i_height */
560 /* * p_pic->p[i_plane].i_pitch; */
565 /*****************************************************************************
566 * RemoveAllVout: destroy all the child video output threads
567 *****************************************************************************/
568 static void RemoveAllVout( vout_thread_t *p_vout )
570 vout_sys_t *p_sys = p_vout->p_sys;
572 while( p_sys->i_vout )
575 if( p_sys->pp_vout[p_sys->i_vout ].b_active )
577 vout_filter_SetupChild( p_vout, p_sys->pp_vout[p_sys->i_vout].p_vout,
578 MouseEvent, FullscreenEventUp, FullscreenEventDown, false );
579 vout_CloseAndRelease( p_sys->pp_vout[p_sys->i_vout].p_vout );
585 * Forward mouse event with proper conversion.
587 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
588 vlc_value_t oldval, vlc_value_t newval, void *p_data )
590 vout_thread_t *p_vout = p_data;
591 vout_sys_t *p_sys = p_vout->p_sys;
595 /* Find the video output index */
596 for( i_vout = 0; i_vout < p_sys->i_vout; i_vout++ )
598 if( p_sys->pp_vout[i_vout].b_active &&
599 p_this == VLC_OBJECT(p_sys->pp_vout[i_vout].p_vout) )
602 assert( i_vout < p_vout->p_sys->i_vout );
604 /* Translate the mouse coordinates */
605 if( !strcmp( psz_var, "mouse-x" ) )
606 newval.i_int += p_vout->output.i_width * (i_vout % p_sys->i_col) / p_sys->i_col;
607 else if( !strcmp( psz_var, "mouse-y" ) )
608 newval.i_int += p_vout->output.i_height * (i_vout / p_sys->i_row) / p_sys->i_row;
610 return var_Set( p_vout, psz_var, newval );
614 * Forward fullscreen event to/from the childrens.
616 static bool IsFullscreenActive( vout_thread_t *p_vout )
618 vout_sys_t *p_sys = p_vout->p_sys;
619 for( int i = 0; i < p_sys->i_vout; i++ )
621 if( p_sys->pp_vout[i].b_active &&
622 var_GetBool( p_sys->pp_vout[i].p_vout, "fullscreen" ) )
627 static int FullscreenEventUp( vlc_object_t *p_this, char const *psz_var,
628 vlc_value_t oldval, vlc_value_t newval, void *p_data )
630 vout_thread_t *p_vout = p_data;
631 VLC_UNUSED(oldval); VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(newval);
633 const bool b_fullscreen = IsFullscreenActive( p_vout );
634 if( !var_GetBool( p_vout, "fullscreen" ) != !b_fullscreen )
635 return var_SetBool( p_vout, "fullscreen", b_fullscreen );
638 static int FullscreenEventDown( vlc_object_t *p_this, char const *psz_var,
639 vlc_value_t oldval, vlc_value_t newval, void *p_data )
641 vout_thread_t *p_vout = (vout_thread_t*)p_this;
642 vout_sys_t *p_sys = p_vout->p_sys;
643 VLC_UNUSED(oldval); VLC_UNUSED(p_data); VLC_UNUSED(psz_var);
645 const bool b_fullscreen = IsFullscreenActive( p_vout );
646 if( !b_fullscreen != !newval.b_bool )
648 for( int i = 0; i < p_sys->i_vout; i++ )
650 if( !p_sys->pp_vout[i].b_active )
653 vout_thread_t *p_child = p_sys->pp_vout[i].p_vout;
654 if( !var_GetBool( p_child, "fullscreen" ) != !newval.b_bool )
656 var_SetBool( p_child, "fullscreen", newval.b_bool );