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>
36 #include "filter_common.h"
38 /*****************************************************************************
40 *****************************************************************************/
41 static int Create ( vlc_object_t * );
42 static void Destroy ( vlc_object_t * );
44 static int Init ( vout_thread_t * );
45 static void End ( vout_thread_t * );
46 static void Render ( vout_thread_t *, picture_t * );
48 static void RemoveAllVout ( vout_thread_t *p_vout );
50 static int SendEvents( vlc_object_t *, char const *,
51 vlc_value_t, vlc_value_t, void * );
53 /*****************************************************************************
55 *****************************************************************************/
56 #define COLS_TEXT N_("Number of columns")
57 #define COLS_LONGTEXT N_("Number of horizontal windows in " \
58 "which to split the video.")
60 #define ROWS_TEXT N_("Number of rows")
61 #define ROWS_LONGTEXT N_("Number of vertical windows in " \
62 "which to split the video.")
64 #define ACTIVE_TEXT N_("Active windows")
65 #define ACTIVE_LONGTEXT N_("Comma-separated list of active windows, " \
68 #define ASPECT_TEXT N_("Element aspect ratio")
69 #define ASPECT_LONGTEXT N_("Aspect ratio of the individual displays " \
72 #define CFG_PREFIX "wall-"
75 set_description( N_("Wall video filter") );
76 set_shortname( N_("Image wall" ));
77 set_capability( "video filter", 0 );
78 set_category( CAT_VIDEO );
79 set_subcategory( SUBCAT_VIDEO_VFILTER );
81 add_integer( CFG_PREFIX "cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT, false );
82 add_integer( CFG_PREFIX "rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT, false );
83 add_string( CFG_PREFIX "active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT,
85 add_string( CFG_PREFIX "element-aspect", "4:3", NULL, ASPECT_TEXT, ASPECT_LONGTEXT, false );
87 add_shortcut( "wall" );
88 set_callbacks( Create, Destroy );
91 static const char *const ppsz_filter_options[] = {
92 "cols", "rows", "active", "element-aspect", NULL
95 /*****************************************************************************
96 * vout_sys_t: Wall video output method descriptor
97 *****************************************************************************
98 * This structure is part of the video output thread descriptor.
99 * It describes the Wall specific properties of an output thread.
100 *****************************************************************************/
113 vout_thread_t *p_vout;
117 /*****************************************************************************
118 * Control: control facility for the vout (forwards to child vout)
119 *****************************************************************************/
120 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
122 int i_row, i_col, i_vout = 0;
124 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
126 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
128 vout_vaControl( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
136 /*****************************************************************************
137 * Create: allocates Wall video thread output method
138 *****************************************************************************
139 * This function allocates and initializes a Wall vout method.
140 *****************************************************************************/
141 static int Create( vlc_object_t *p_this )
143 vout_thread_t *p_vout = (vout_thread_t *)p_this;
144 char *psz_method, *psz_tmp, *psz_method_tmp;
147 /* Allocate structure */
148 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
149 if( p_vout->p_sys == NULL )
151 msg_Err( p_vout, "out of memory" );
155 p_vout->pf_init = Init;
156 p_vout->pf_end = End;
157 p_vout->pf_manage = NULL;
158 p_vout->pf_render = Render;
159 p_vout->pf_display = NULL;
160 p_vout->pf_control = Control;
162 config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
165 /* Look what method was requested */
166 p_vout->p_sys->i_col = var_CreateGetInteger( p_vout, CFG_PREFIX "cols" );
167 p_vout->p_sys->i_row = var_CreateGetInteger( p_vout, CFG_PREFIX "rows" );
169 p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
170 p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
172 msg_Dbg( p_vout, "opening a %i x %i wall",
173 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
175 p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
176 p_vout->p_sys->i_col *
177 sizeof(struct vout_list_t) );
178 if( p_vout->p_sys->pp_vout == NULL )
180 msg_Err( p_vout, "out of memory" );
181 free( p_vout->p_sys );
186 psz_method = var_CreateGetNonEmptyString( p_vout, CFG_PREFIX "active" );
188 /* If no trailing vout are specified, take them all */
189 if( psz_method == NULL )
191 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
194 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
197 /* If trailing vout are specified, activate only the requested ones */
200 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
203 p_vout->p_sys->pp_vout[i_vout].b_active = 0;
208 psz_tmp = psz_method;
209 while( *psz_tmp && *psz_tmp != ',' )
217 i_vout = atoi( psz_method );
218 psz_method = psz_tmp + 1;
222 i_vout = atoi( psz_method );
223 psz_method = psz_tmp;
227 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
229 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
234 free( psz_method_tmp );
239 /*****************************************************************************
240 * Init: initialize Wall video thread output method
241 *****************************************************************************/
242 static int Init( vout_thread_t *p_vout )
244 int i_index, i_row, i_col, i_width, i_height, i_left, i_top;
245 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 );
438 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
440 p_vout->p_sys->i_vout++;
444 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
446 ADD_PARENT_CALLBACKS( SendEventsToChild );
451 /*****************************************************************************
452 * End: terminate Wall video thread output method
453 *****************************************************************************/
454 static void End( vout_thread_t *p_vout )
458 /* Free the fake output buffers we allocated */
459 for( i_index = I_OUTPUTPICTURES ; i_index ; )
462 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
466 /*****************************************************************************
467 * Destroy: destroy Wall video thread output method
468 *****************************************************************************
469 * Terminate an output method created by WallCreateOutputMethod
470 *****************************************************************************/
471 static void Destroy( vlc_object_t *p_this )
473 vout_thread_t *p_vout = (vout_thread_t *)p_this;
475 RemoveAllVout( p_vout );
477 DEL_PARENT_CALLBACKS( SendEventsToChild );
479 free( p_vout->p_sys->pp_vout );
480 free( p_vout->p_sys );
483 /*****************************************************************************
484 * Render: displays previously rendered output
485 *****************************************************************************
486 * This function send the currently rendered image to Wall image, waits
487 * until it is displayed and switch the two rendering buffers, preparing next
489 *****************************************************************************/
490 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
492 picture_t *p_outpic = NULL;
493 int i_col, i_row, i_vout, i_plane;
494 int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
498 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
500 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
502 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
504 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;
505 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;
508 if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
515 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
519 if( p_vout->b_die || p_vout->b_error )
522 p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
526 msleep( VOUT_OUTMEM_SLEEP );
529 vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
530 p_outpic, p_pic->date );
531 vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
534 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
536 uint8_t *p_in, *p_in_end, *p_out;
537 int i_in_pitch = p_pic->p[i_plane].i_pitch;
538 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
539 int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
541 p_in = p_pic->p[i_plane].p_pixels
542 + pi_top_skip[i_plane] + pi_left_skip[i_plane];
544 p_in_end = p_in + p_outpic->p[i_plane].i_visible_lines
545 * p_pic->p[i_plane].i_pitch;
547 p_out = p_outpic->p[i_plane].p_pixels;
549 while( p_in < p_in_end )
551 vlc_memcpy( p_out, p_in, i_copy_pitch );
553 p_out += i_out_pitch;
556 // pi_left_skip[i_plane] += i_copy_pitch;
559 vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
561 vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
567 /* for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ ) */
569 /* pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height */
570 /* * p_pic->p[i_plane].i_visible_lines */
571 /* / p_vout->output.i_height */
572 /* * p_pic->p[i_plane].i_pitch; */
577 /*****************************************************************************
578 * RemoveAllVout: destroy all the child video output threads
579 *****************************************************************************/
580 static void RemoveAllVout( vout_thread_t *p_vout )
582 while( p_vout->p_sys->i_vout )
584 --p_vout->p_sys->i_vout;
585 if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
588 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
591 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
593 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
598 /*****************************************************************************
599 * SendEvents: forward mouse and keyboard events to the parent p_vout
600 *****************************************************************************/
601 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
602 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
605 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
607 vlc_value_t sentval = newval;
609 /* Find the video output index */
610 for( i_vout = 0; i_vout < p_vout->p_sys->i_vout; i_vout++ )
612 if( p_this == (vlc_object_t *)p_vout->p_sys->pp_vout[ i_vout ].p_vout )
618 if( i_vout == p_vout->p_sys->i_vout )
623 /* Translate the mouse coordinates */
624 if( !strcmp( psz_var, "mouse-x" ) )
626 sentval.i_int += p_vout->output.i_width
627 * (i_vout % p_vout->p_sys->i_col)
628 / p_vout->p_sys->i_col;
630 else if( !strcmp( psz_var, "mouse-y" ) )
632 sentval.i_int += p_vout->output.i_height
633 * (i_vout / p_vout->p_sys->i_row)
634 / p_vout->p_sys->i_row;
637 var_Set( p_vout, psz_var, sentval );
642 /*****************************************************************************
643 * SendEventsToChild: forward events to the child/children vout
644 *****************************************************************************/
645 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
646 vlc_value_t oldval, vlc_value_t newval, void *p_data )
648 VLC_UNUSED(p_data); VLC_UNUSED(oldval);
649 vout_thread_t *p_vout = (vout_thread_t *)p_this;
650 int i_row, i_col, i_vout = 0;
652 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
654 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
656 var_Set( p_vout->p_sys->pp_vout[ i_vout ].p_vout, psz_var, newval);
657 if( !strcmp( psz_var, "fullscreen" ) ) break;