1 /*****************************************************************************
2 * wall.c : Wall video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 VideoLAN
5 * $Id: wall.c,v 1.17 2002/05/19 12:57:32 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 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
31 #include <videolan/vlc.h>
34 #include "video_output.h"
36 #include "filter_common.h"
38 /*****************************************************************************
39 * Capabilities defined in the other files.
40 *****************************************************************************/
41 static void vout_getfunctions( function_list_t * p_function_list );
43 /*****************************************************************************
44 * Build configuration tree.
45 *****************************************************************************/
50 SET_DESCRIPTION( _("image wall video module") )
51 /* Capability score set to 0 because we don't want to be spawned
52 * as a video output unless explicitly requested to */
53 ADD_CAPABILITY( VOUT, 0 )
54 ADD_SHORTCUT( "wall" )
58 vout_getfunctions( &p_module->p_functions->vout );
61 MODULE_DEACTIVATE_START
62 MODULE_DEACTIVATE_STOP
64 /*****************************************************************************
65 * vout_sys_t: Wall video output method descriptor
66 *****************************************************************************
67 * This structure is part of the video output thread descriptor.
68 * It describes the Wall specific properties of an output thread.
69 *****************************************************************************/
70 typedef struct vout_sys_s
80 struct vout_thread_s *p_vout;
85 /*****************************************************************************
87 *****************************************************************************/
88 static int vout_Create ( vout_thread_t * );
89 static int vout_Init ( vout_thread_t * );
90 static void vout_End ( vout_thread_t * );
91 static void vout_Destroy ( vout_thread_t * );
92 static int vout_Manage ( vout_thread_t * );
93 static void vout_Render ( vout_thread_t *, struct picture_s * );
94 static void vout_Display ( vout_thread_t *, struct picture_s * );
96 static void RemoveAllVout ( vout_thread_t *p_vout );
98 /*****************************************************************************
99 * Functions exported as capabilities. They are declared as static so that
100 * we don't pollute the namespace too much.
101 *****************************************************************************/
102 static void vout_getfunctions( function_list_t * p_function_list )
104 p_function_list->functions.vout.pf_create = vout_Create;
105 p_function_list->functions.vout.pf_init = vout_Init;
106 p_function_list->functions.vout.pf_end = vout_End;
107 p_function_list->functions.vout.pf_destroy = vout_Destroy;
108 p_function_list->functions.vout.pf_manage = vout_Manage;
109 p_function_list->functions.vout.pf_render = vout_Render;
110 p_function_list->functions.vout.pf_display = vout_Display;
113 /*****************************************************************************
114 * vout_Create: allocates Wall video thread output method
115 *****************************************************************************
116 * This function allocates and initializes a Wall vout method.
117 *****************************************************************************/
118 static int vout_Create( vout_thread_t *p_vout )
120 char *psz_method, *psz_tmp, *psz_method_tmp;
123 /* Allocate structure */
124 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
125 if( p_vout->p_sys == NULL )
127 intf_ErrMsg("error: %s", strerror(ENOMEM) );
131 /* Look what method was requested */
132 if( !(psz_method = psz_method_tmp
133 = config_GetPszVariable( "filter" )) )
135 intf_ErrMsg( "vout error: configuration variable %s empty",
140 while( *psz_method && *psz_method != ':' )
148 psz_tmp = psz_method;
150 while( *psz_tmp && *psz_tmp != 'x' && *psz_tmp != ':' )
155 if( *psz_tmp == 'x' )
158 p_vout->p_sys->i_col = atoi( psz_method );
161 psz_method = psz_tmp;
163 while( *psz_tmp && *psz_tmp != ':' )
171 p_vout->p_sys->i_row = atoi( psz_method );
172 psz_method = psz_tmp + 1;
176 p_vout->p_sys->i_row = atoi( psz_method );
180 else if( *psz_tmp == ':' )
182 p_vout->p_sys->i_col = p_vout->p_sys->i_row = atoi( psz_method );
183 psz_method = psz_tmp + 1;
187 p_vout->p_sys->i_col = p_vout->p_sys->i_row = atoi( psz_method );
193 intf_ErrMsg( "filter error: no valid wall size provided, "
195 p_vout->p_sys->i_col = 3;
196 p_vout->p_sys->i_row = 3;
200 p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
201 p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
203 intf_WarnMsg( 3, "filter info: opening a %i x %i wall",
204 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
206 p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
207 p_vout->p_sys->i_col *
208 sizeof(struct vout_list_s) );
209 if( p_vout->p_sys->pp_vout == NULL )
211 intf_ErrMsg("error: %s", strerror(ENOMEM) );
212 free( psz_method_tmp );
213 free( p_vout->p_sys );
217 /* If no trailing vout are specified, take them all */
218 if( psz_method == NULL )
220 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
223 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
226 /* If trailing vout are specified, activate only the requested ones */
229 for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
232 p_vout->p_sys->pp_vout[i_vout].b_active = 0;
237 psz_tmp = psz_method;
238 while( *psz_tmp && *psz_tmp != ',' )
246 i_vout = atoi( psz_method );
247 psz_method = psz_tmp + 1;
251 i_vout = atoi( psz_method );
252 psz_method = psz_tmp;
256 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
258 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
263 free( psz_method_tmp );
268 /*****************************************************************************
269 * vout_Init: initialize Wall video thread output method
270 *****************************************************************************/
271 static int vout_Init( vout_thread_t *p_vout )
273 int i_index, i_row, i_col, i_width, i_height;
277 I_OUTPUTPICTURES = 0;
279 /* Initialize the output structure */
280 p_vout->output.i_chroma = p_vout->render.i_chroma;
281 p_vout->output.i_width = p_vout->render.i_width;
282 p_vout->output.i_height = p_vout->render.i_height;
283 p_vout->output.i_aspect = p_vout->render.i_aspect;
285 /* Try to open the real video output */
286 psz_filter = config_GetPszVariable( "filter" );
287 config_PutPszVariable( "filter", NULL );
289 intf_WarnMsg( 1, "filter: spawning the real video outputs" );
291 p_vout->p_sys->i_vout = 0;
293 /* FIXME: use bresenham instead of those ugly divisions */
294 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
296 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
298 if( i_col + 1 < p_vout->p_sys->i_col )
300 i_width = ( p_vout->render.i_width
301 / p_vout->p_sys->i_col ) & ~0x1;
305 i_width = p_vout->render.i_width
306 - ( ( p_vout->render.i_width
307 / p_vout->p_sys->i_col ) & ~0x1 ) * i_col;
310 if( i_row + 1 < p_vout->p_sys->i_row )
312 i_height = ( p_vout->render.i_height
313 / p_vout->p_sys->i_row ) & ~0x3;
317 i_height = p_vout->render.i_height
318 - ( ( p_vout->render.i_height
319 / p_vout->p_sys->i_row ) & ~0x3 ) * i_row;
322 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
323 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
325 if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
327 p_vout->p_sys->i_vout++;
331 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
332 vout_CreateThread( NULL, i_width, i_height,
333 p_vout->render.i_chroma,
334 p_vout->render.i_aspect
335 * p_vout->render.i_height / i_height
336 * i_width / p_vout->render.i_width );
337 if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout == NULL )
339 intf_ErrMsg( "vout error: failed to get %ix%i vout threads",
340 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
341 RemoveAllVout( p_vout );
342 config_PutPszVariable( "filter", psz_filter );
343 if( psz_filter ) free( psz_filter );
347 p_vout->p_sys->i_vout++;
351 config_PutPszVariable( "filter", psz_filter );
352 if( psz_filter ) free( psz_filter );
354 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
359 /*****************************************************************************
360 * vout_End: terminate Wall video thread output method
361 *****************************************************************************/
362 static void vout_End( vout_thread_t *p_vout )
366 /* Free the fake output buffers we allocated */
367 for( i_index = I_OUTPUTPICTURES ; i_index ; )
370 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
374 /*****************************************************************************
375 * vout_Destroy: destroy Wall video thread output method
376 *****************************************************************************
377 * Terminate an output method created by WallCreateOutputMethod
378 *****************************************************************************/
379 static void vout_Destroy( vout_thread_t *p_vout )
381 RemoveAllVout( p_vout );
383 free( p_vout->p_sys->pp_vout );
384 free( p_vout->p_sys );
387 /*****************************************************************************
388 * vout_Manage: handle Wall events
389 *****************************************************************************
390 * This function should be called regularly by video output thread. It manages
391 * console events. It returns a non null value on error.
392 *****************************************************************************/
393 static int vout_Manage( vout_thread_t *p_vout )
398 /*****************************************************************************
399 * vout_Render: displays previously rendered output
400 *****************************************************************************
401 * This function send the currently rendered image to Wall image, waits
402 * until it is displayed and switch the two rendering buffers, preparing next
404 *****************************************************************************/
405 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
407 picture_t *p_outpic = NULL;
408 int i_col, i_row, i_vout, i_plane;
409 int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
413 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
415 pi_top_skip[i_plane] = 0;
418 for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
420 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
422 pi_left_skip[i_plane] = 0;
425 for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
427 if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
429 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
431 pi_left_skip[i_plane] +=
432 p_vout->p_sys->pp_vout[ i_vout ].i_width
433 * p_pic->p[i_plane].i_pitch / p_vout->output.i_width;
440 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
444 if( p_vout->b_die || p_vout->b_error )
447 p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
451 msleep( VOUT_OUTMEM_SLEEP );
454 vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
455 p_outpic, p_pic->date );
456 vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
459 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
461 u8 *p_in, *p_in_end, *p_out;
462 int i_in_pitch = p_pic->p[i_plane].i_pitch;
463 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
465 p_in = p_pic->p[i_plane].p_pixels
466 + pi_top_skip[i_plane] + pi_left_skip[i_plane];
468 p_in_end = p_in + p_outpic->p[i_plane].i_lines
469 * p_pic->p[i_plane].i_pitch;
471 p_out = p_outpic->p[i_plane].p_pixels;
473 while( p_in < p_in_end )
475 FAST_MEMCPY( p_out, p_in, i_out_pitch );
477 p_out += i_out_pitch;
480 pi_left_skip[i_plane] += i_out_pitch;
483 vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
485 vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
491 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
493 pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height
494 * p_pic->p[i_plane].i_lines
495 / p_vout->output.i_height
496 * p_pic->p[i_plane].i_pitch;
501 /*****************************************************************************
502 * vout_Display: displays previously rendered output
503 *****************************************************************************
504 * This function send the currently rendered image to Invert image, waits
505 * until it is displayed and switch the two rendering buffers, preparing next
507 *****************************************************************************/
508 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
513 /*****************************************************************************
514 * RemoveAllVout: destroy all the child video output threads
515 *****************************************************************************/
516 static void RemoveAllVout( vout_thread_t *p_vout )
518 while( p_vout->p_sys->i_vout )
520 --p_vout->p_sys->i_vout;
521 if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
524 p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout, NULL );