1 /*****************************************************************************
2 * wall.c : Wall video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
5 * $Id: wall.c,v 1.9 2003/03/30 18:14:38 gbazin Exp $
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
33 #include "filter_common.h"
35 /*****************************************************************************
37 *****************************************************************************/
38 static int Create ( vlc_object_t * );
39 static void Destroy ( vlc_object_t * );
41 static int Init ( vout_thread_t * );
42 static void End ( vout_thread_t * );
43 static void Render ( vout_thread_t *, picture_t * );
45 static void RemoveAllVout ( vout_thread_t *p_vout );
47 static int SendEvents( vlc_object_t *, char const *,
48 vlc_value_t, vlc_value_t, void * );
50 /*****************************************************************************
52 *****************************************************************************/
53 #define COLS_TEXT N_("number of columns")
54 #define COLS_LONGTEXT N_("Select the number of horizontal videowindows in " \
55 "which to split the video")
57 #define ROWS_TEXT N_("number of rows")
58 #define ROWS_LONGTEXT N_("Select the number of vertical videowindows in " \
59 "which to split the video")
61 #define ACTIVE_TEXT N_("active windows")
62 #define ACTIVE_LONGTEXT N_("comma separated list of active windows, " \
66 add_category_hint( N_("Miscellaneous"), NULL, VLC_FALSE );
67 add_integer( "wall-cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT, VLC_FALSE );
68 add_integer( "wall-rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT, VLC_FALSE );
69 add_string( "wall-active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT, VLC_FALSE );
70 set_description( _("wall video filter") );
71 set_capability( "video filter", 0 );
72 add_shortcut( "wall" );
73 set_callbacks( Create, Destroy );
76 /*****************************************************************************
77 * vout_sys_t: Wall video output method descriptor
78 *****************************************************************************
79 * This structure is part of the video output thread descriptor.
80 * It describes the Wall specific properties of an output thread.
81 *****************************************************************************/
92 vout_thread_t *p_vout;
96 /*****************************************************************************
97 * Create: allocates Wall video thread output method
98 *****************************************************************************
99 * This function allocates and initializes a Wall vout method.
100 *****************************************************************************/
101 static int Create( vlc_object_t *p_this )
103 vout_thread_t *p_vout = (vout_thread_t *)p_this;
104 char *psz_method, *psz_tmp, *psz_method_tmp;
107 /* Allocate structure */
108 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
109 if( p_vout->p_sys == NULL )
111 msg_Err( p_vout, "out of memory" );
115 p_vout->pf_init = Init;
116 p_vout->pf_end = End;
117 p_vout->pf_manage = NULL;
118 p_vout->pf_render = Render;
119 p_vout->pf_display = NULL;
121 /* Look what method was requested */
122 p_vout->p_sys->i_col = config_GetInt( p_vout, "wall-cols" );
123 p_vout->p_sys->i_row = config_GetInt( p_vout, "wall-rows" );
125 p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
126 p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
128 msg_Dbg( p_vout, "opening a %i x %i wall",
129 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
131 p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
132 p_vout->p_sys->i_col *
133 sizeof(struct vout_list_t) );
134 if( p_vout->p_sys->pp_vout == NULL )
136 msg_Err( p_vout, "out of memory" );
137 free( p_vout->p_sys );
141 psz_method_tmp = psz_method = config_GetPsz( p_vout, "wall-active" );
143 /* If no trailing vout are specified, take them all */
144 if( psz_method == NULL )
146 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
149 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
152 /* If trailing vout are specified, activate only the requested ones */
155 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
158 p_vout->p_sys->pp_vout[i_vout].b_active = 0;
163 psz_tmp = psz_method;
164 while( *psz_tmp && *psz_tmp != ',' )
172 i_vout = atoi( psz_method );
173 psz_method = psz_tmp + 1;
177 i_vout = atoi( psz_method );
178 psz_method = psz_tmp;
182 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
184 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
189 free( psz_method_tmp );
194 /*****************************************************************************
195 * Init: initialize Wall video thread output method
196 *****************************************************************************/
197 static int Init( vout_thread_t *p_vout )
199 int i_index, i_row, i_col, i_width, i_height;
202 I_OUTPUTPICTURES = 0;
204 /* Initialize the output structure */
205 p_vout->output.i_chroma = p_vout->render.i_chroma;
206 p_vout->output.i_width = p_vout->render.i_width;
207 p_vout->output.i_height = p_vout->render.i_height;
208 p_vout->output.i_aspect = p_vout->render.i_aspect;
210 /* Try to open the real video output */
211 msg_Dbg( p_vout, "spawning the real video outputs" );
213 p_vout->p_sys->i_vout = 0;
215 /* FIXME: use bresenham instead of those ugly divisions */
216 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
218 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
220 if( i_col + 1 < p_vout->p_sys->i_col )
222 i_width = ( p_vout->render.i_width
223 / p_vout->p_sys->i_col ) & ~0x1;
227 i_width = p_vout->render.i_width
228 - ( ( p_vout->render.i_width
229 / p_vout->p_sys->i_col ) & ~0x1 ) * i_col;
232 if( i_row + 1 < p_vout->p_sys->i_row )
234 i_height = ( p_vout->render.i_height
235 / p_vout->p_sys->i_row ) & ~0x3;
239 i_height = p_vout->render.i_height
240 - ( ( p_vout->render.i_height
241 / p_vout->p_sys->i_row ) & ~0x3 ) * i_row;
244 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
245 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
247 if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
249 p_vout->p_sys->i_vout++;
253 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
254 vout_Create( p_vout, i_width, i_height,
255 p_vout->render.i_chroma,
256 p_vout->render.i_aspect
257 * p_vout->render.i_height / i_height
258 * i_width / p_vout->render.i_width );
259 if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout == NULL )
261 msg_Err( p_vout, "failed to get %ix%i vout threads",
262 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
263 RemoveAllVout( p_vout );
267 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
270 p_vout->p_sys->i_vout++;
274 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
279 /*****************************************************************************
280 * End: terminate Wall video thread output method
281 *****************************************************************************/
282 static void End( vout_thread_t *p_vout )
286 /* Free the fake output buffers we allocated */
287 for( i_index = I_OUTPUTPICTURES ; i_index ; )
290 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
294 /*****************************************************************************
295 * Destroy: destroy Wall video thread output method
296 *****************************************************************************
297 * Terminate an output method created by WallCreateOutputMethod
298 *****************************************************************************/
299 static void Destroy( vlc_object_t *p_this )
301 vout_thread_t *p_vout = (vout_thread_t *)p_this;
303 RemoveAllVout( p_vout );
305 free( p_vout->p_sys->pp_vout );
306 free( p_vout->p_sys );
309 /*****************************************************************************
310 * Render: displays previously rendered output
311 *****************************************************************************
312 * This function send the currently rendered image to Wall image, waits
313 * until it is displayed and switch the two rendering buffers, preparing next
315 *****************************************************************************/
316 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
318 picture_t *p_outpic = NULL;
319 int i_col, i_row, i_vout, i_plane;
320 int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
324 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
326 pi_top_skip[i_plane] = 0;
329 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
331 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
333 pi_left_skip[i_plane] = 0;
336 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
338 if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
340 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
342 pi_left_skip[i_plane] +=
343 p_vout->p_sys->pp_vout[ i_vout ].i_width
344 * p_pic->p[i_plane].i_pitch / p_vout->output.i_width;
351 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
355 if( p_vout->b_die || p_vout->b_error )
358 p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
362 msleep( VOUT_OUTMEM_SLEEP );
365 vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
366 p_outpic, p_pic->date );
367 vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
370 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
372 uint8_t *p_in, *p_in_end, *p_out;
373 int i_in_pitch = p_pic->p[i_plane].i_pitch;
374 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
375 int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
377 p_in = p_pic->p[i_plane].p_pixels
378 + pi_top_skip[i_plane] + pi_left_skip[i_plane];
380 p_in_end = p_in + p_outpic->p[i_plane].i_lines
381 * p_pic->p[i_plane].i_pitch;
383 p_out = p_outpic->p[i_plane].p_pixels;
385 while( p_in < p_in_end )
387 p_vout->p_vlc->pf_memcpy( p_out, p_in, i_copy_pitch );
389 p_out += i_out_pitch;
392 pi_left_skip[i_plane] += i_out_pitch;
395 vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
397 vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
403 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
405 pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height
406 * p_pic->p[i_plane].i_lines
407 / p_vout->output.i_height
408 * p_pic->p[i_plane].i_pitch;
413 /*****************************************************************************
414 * RemoveAllVout: destroy all the child video output threads
415 *****************************************************************************/
416 static void RemoveAllVout( vout_thread_t *p_vout )
418 while( p_vout->p_sys->i_vout )
420 --p_vout->p_sys->i_vout;
421 if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
424 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
427 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
429 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
434 /*****************************************************************************
435 * SendEvents: forward mouse and keyboard events to the parent p_vout
436 *****************************************************************************/
437 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
438 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
440 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
442 vlc_value_t sentval = newval;
444 /* Find the video output index */
445 for( i_vout = 0; i_vout < p_vout->p_sys->i_vout; i_vout++ )
447 if( p_this == (vlc_object_t *)p_vout->p_sys->pp_vout[ i_vout ].p_vout )
453 if( i_vout == p_vout->p_sys->i_vout )
458 /* Translate the mouse coordinates */
459 if( !strcmp( psz_var, "mouse-x" ) )
461 sentval.i_int += p_vout->output.i_width
462 * (i_vout % p_vout->p_sys->i_col)
463 / p_vout->p_sys->i_col;
465 else if( !strcmp( psz_var, "mouse-y" ) )
467 sentval.i_int += p_vout->output.i_height
468 * (i_vout / p_vout->p_sys->i_row)
469 / p_vout->p_sys->i_row;
472 var_Set( p_vout, psz_var, sentval );