1 /*****************************************************************************
2 * vout_subpictures.c : subpicture management functions
3 *****************************************************************************
4 * Copyright (C) 2000-2005 the VideoLAN team
7 * Authors: Vincent Seguin <seguin@via.ecp.fr>
8 * Samuel Hocevar <sam@zoy.org>
9 * Gildas Bazin <gbazin@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
29 #include <stdlib.h> /* free() */
30 #include <stdio.h> /* sprintf() */
31 #include <string.h> /* strerror() */
35 #include <vlc_block.h>
36 #include <vlc_filter.h>
39 /*****************************************************************************
41 *****************************************************************************/
42 static void UpdateSPU ( spu_t *, vlc_object_t * );
43 static int CropCallback( vlc_object_t *, char const *,
44 vlc_value_t, vlc_value_t, void * );
46 static int spu_vaControlDefault( spu_t *, int, va_list );
48 static subpicture_t *sub_new_buffer( filter_t * );
49 static void sub_del_buffer( filter_t *, subpicture_t * );
50 static subpicture_t *spu_new_buffer( filter_t * );
51 static void spu_del_buffer( filter_t *, subpicture_t * );
52 static picture_t *spu_new_video_buffer( filter_t * );
53 static void spu_del_video_buffer( filter_t *, picture_t * );
55 struct filter_owner_sys_t
62 * Creates the subpicture unit
64 * \param p_this the parent object which creates the subpicture unit
66 spu_t *__spu_Create( vlc_object_t *p_this )
69 spu_t *p_spu = vlc_object_create( p_this, VLC_OBJECT_SPU );
71 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
73 p_spu->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
76 p_spu->p_blend = NULL;
78 p_spu->p_scale = NULL;
80 p_spu->pf_control = spu_vaControlDefault;
82 /* Register the default subpicture channel */
85 vlc_mutex_init( p_this, &p_spu->subpicture_lock );
87 vlc_object_attach( p_spu, p_this );
93 * Initialise the subpicture unit
95 * \param p_spu the subpicture unit object
97 int spu_Init( spu_t *p_spu )
102 /* If the user requested a sub margin, we force the position. */
103 var_Create( p_spu, "sub-margin", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
104 var_Get( p_spu, "sub-margin", &val );
105 p_spu->i_margin = val.i_int;
107 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
108 var_Get( p_spu, "sub-filter", &val );
110 psz_parser = val.psz_string;
112 while( psz_parser && *psz_parser )
114 config_chain_t *p_cfg; /* Do we ever need to free this ? */
117 psz_parser = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
119 msg_Dbg( p_spu, "adding sub-filter: %s", psz_name );
121 p_spu->pp_filter[p_spu->i_filter] =
122 vlc_object_create( p_spu, VLC_OBJECT_FILTER );
123 vlc_object_attach( p_spu->pp_filter[p_spu->i_filter], p_spu );
124 p_spu->pp_filter[p_spu->i_filter]->pf_sub_buffer_new = sub_new_buffer;
125 p_spu->pp_filter[p_spu->i_filter]->pf_sub_buffer_del = sub_del_buffer;
126 p_spu->pp_filter[p_spu->i_filter]->p_cfg = p_cfg;;
127 p_spu->pp_filter[p_spu->i_filter]->p_module =
128 module_Need( p_spu->pp_filter[p_spu->i_filter],
129 "sub filter", psz_name, 0 );
130 if( p_spu->pp_filter[p_spu->i_filter]->p_module )
132 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
133 p_spu->pp_filter[p_spu->i_filter]->p_owner = p_sys;
134 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
135 p_sys->p_spu = p_spu;
140 msg_Dbg( p_spu, "no sub filter found" );
141 vlc_object_detach( p_spu->pp_filter[p_spu->i_filter] );
142 vlc_object_destroy( p_spu->pp_filter[p_spu->i_filter] );
145 if( p_spu->i_filter >= 10 )
147 msg_Dbg( p_spu, "can't add anymore filters" );
152 if( val.psz_string ) free( val.psz_string );
158 * Destroy the subpicture unit
160 * \param p_this the parent object which destroys the subpicture unit
162 void spu_Destroy( spu_t *p_spu )
166 vlc_object_detach( p_spu );
168 /* Destroy all remaining subpictures */
169 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
171 if( p_spu->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
173 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
179 if( p_spu->p_blend->p_module )
180 module_Unneed( p_spu->p_blend, p_spu->p_blend->p_module );
182 vlc_object_detach( p_spu->p_blend );
183 vlc_object_destroy( p_spu->p_blend );
188 if( p_spu->p_text->p_module )
189 module_Unneed( p_spu->p_text, p_spu->p_text->p_module );
191 vlc_object_detach( p_spu->p_text );
192 vlc_object_destroy( p_spu->p_text );
197 if( p_spu->p_scale->p_module )
198 module_Unneed( p_spu->p_scale, p_spu->p_scale->p_module );
200 vlc_object_detach( p_spu->p_scale );
201 vlc_object_destroy( p_spu->p_scale );
204 while( p_spu->i_filter-- )
206 module_Unneed( p_spu->pp_filter[p_spu->i_filter],
207 p_spu->pp_filter[p_spu->i_filter]->p_module );
208 free( p_spu->pp_filter[p_spu->i_filter]->p_owner );
209 vlc_object_detach( p_spu->pp_filter[p_spu->i_filter] );
210 vlc_object_destroy( p_spu->pp_filter[p_spu->i_filter] );
213 vlc_mutex_destroy( &p_spu->subpicture_lock );
214 vlc_object_destroy( p_spu );
218 * Attach/Detach the SPU from any input
220 * \param p_this the object in which to destroy the subpicture unit
221 * \param b_attach to select attach or detach
223 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, vlc_bool_t b_attach )
225 vlc_object_t *p_input;
227 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
228 if( !p_input ) return;
232 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
233 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
234 vlc_object_release( p_input );
238 /* Delete callback */
239 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
240 vlc_object_release( p_input );
245 * Create a subpicture region
247 * \param p_this vlc_object_t
248 * \param p_fmt the format that this subpicture region should have
250 static void RegionPictureRelease( picture_t *p_pic )
252 if( p_pic->p_data_orig ) free( p_pic->p_data_orig );
254 subpicture_region_t *__spu_CreateRegion( vlc_object_t *p_this,
255 video_format_t *p_fmt )
257 subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
258 memset( p_region, 0, sizeof(subpicture_region_t) );
259 p_region->p_next = 0;
260 p_region->p_cache = 0;
261 p_region->fmt = *p_fmt;
262 p_region->psz_text = 0;
263 p_region->p_style = NULL;
265 if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
266 p_fmt->p_palette = p_region->fmt.p_palette =
267 malloc( sizeof(video_palette_t) );
268 else p_fmt->p_palette = p_region->fmt.p_palette = NULL;
270 p_region->picture.p_data_orig = NULL;
272 if( p_fmt->i_chroma == VLC_FOURCC('T','E','X','T') ) return p_region;
274 vout_AllocatePicture( p_this, &p_region->picture, p_fmt->i_chroma,
275 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
277 if( !p_region->picture.i_planes )
280 free( p_fmt->p_palette );
284 p_region->picture.pf_release = RegionPictureRelease;
290 * Make a subpicture region from an existing picture_t
292 * \param p_this vlc_object_t
293 * \param p_fmt the format that this subpicture region should have
294 * \param p_pic a pointer to the picture creating the region (not freed)
296 subpicture_region_t *__spu_MakeRegion( vlc_object_t *p_this,
297 video_format_t *p_fmt,
300 subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
301 memset( p_region, 0, sizeof(subpicture_region_t) );
302 p_region->p_next = 0;
303 p_region->p_cache = 0;
304 p_region->fmt = *p_fmt;
305 p_region->psz_text = 0;
306 p_region->p_style = NULL;
308 if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
309 p_fmt->p_palette = p_region->fmt.p_palette =
310 malloc( sizeof(video_palette_t) );
311 else p_fmt->p_palette = p_region->fmt.p_palette = NULL;
313 memcpy( &p_region->picture, p_pic, sizeof(picture_t) );
314 p_region->picture.pf_release = RegionPictureRelease;
320 * Destroy a subpicture region
322 * \param p_this vlc_object_t
323 * \param p_region the subpicture region to destroy
325 void __spu_DestroyRegion( vlc_object_t *p_this, subpicture_region_t *p_region )
327 if( !p_region ) return;
328 if( p_region->picture.pf_release )
329 p_region->picture.pf_release( &p_region->picture );
330 if( p_region->fmt.p_palette ) free( p_region->fmt.p_palette );
331 if( p_region->p_cache ) __spu_DestroyRegion( p_this, p_region->p_cache );
336 * Display a subpicture
338 * Remove the reservation flag of a subpicture, which will cause it to be
340 * \param p_spu the subpicture unit object
341 * \param p_subpic the subpicture to display
343 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
345 /* Check if status is valid */
346 if( p_subpic->i_status != RESERVED_SUBPICTURE )
348 msg_Err( p_spu, "subpicture %p has invalid status #%d",
349 p_subpic, p_subpic->i_status );
352 /* Remove reservation flag */
353 p_subpic->i_status = READY_SUBPICTURE;
355 if( p_subpic->i_channel == DEFAULT_CHAN )
357 p_subpic->i_channel = 0xFFFF;
358 spu_Control( p_spu, SPU_CHANNEL_CLEAR, DEFAULT_CHAN );
359 p_subpic->i_channel = DEFAULT_CHAN;
364 * Allocate a subpicture in the spu heap.
366 * This function create a reserved subpicture in the spu heap.
367 * A null pointer is returned if the function fails. This method provides an
368 * already allocated zone of memory in the spu data fields. It needs locking
369 * since several pictures can be created by several producers threads.
370 * \param p_spu the subpicture unit in which to create the subpicture
371 * \return NULL on error, a reserved subpicture otherwise
373 subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
375 int i_subpic; /* subpicture index */
376 subpicture_t * p_subpic = NULL; /* first free subpicture */
379 vlc_mutex_lock( &p_spu->subpicture_lock );
382 * Look for an empty place
385 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
387 if( p_spu->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )
389 /* Subpicture is empty and ready for allocation */
390 p_subpic = &p_spu->p_subpicture[i_subpic];
391 p_spu->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
396 /* If no free subpicture could be found */
397 if( p_subpic == NULL )
399 msg_Err( p_spu, "subpicture heap is full" );
400 vlc_mutex_unlock( &p_spu->subpicture_lock );
404 /* Copy subpicture information, set some default values */
405 memset( p_subpic, 0, sizeof(subpicture_t) );
406 p_subpic->i_status = RESERVED_SUBPICTURE;
407 p_subpic->b_absolute = VLC_TRUE;
408 p_subpic->b_pausable = VLC_FALSE;
409 p_subpic->b_fade = VLC_FALSE;
410 p_subpic->i_alpha = 0xFF;
411 p_subpic->p_region = 0;
412 p_subpic->pf_render = 0;
413 p_subpic->pf_destroy = 0;
415 vlc_mutex_unlock( &p_spu->subpicture_lock );
417 p_subpic->pf_create_region = __spu_CreateRegion;
418 p_subpic->pf_make_region = __spu_MakeRegion;
419 p_subpic->pf_destroy_region = __spu_DestroyRegion;
425 * Remove a subpicture from the heap
427 * This function frees a previously reserved subpicture.
428 * It is meant to be used when the construction of a picture aborted.
429 * This function does not need locking since reserved subpictures are ignored
432 void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
435 vlc_mutex_lock( &p_spu->subpicture_lock );
437 /* There can be race conditions so we need to check the status */
438 if( p_subpic->i_status == FREE_SUBPICTURE )
440 vlc_mutex_unlock( &p_spu->subpicture_lock );
444 /* Check if status is valid */
445 if( ( p_subpic->i_status != RESERVED_SUBPICTURE )
446 && ( p_subpic->i_status != READY_SUBPICTURE ) )
448 msg_Err( p_spu, "subpicture %p has invalid status %d",
449 p_subpic, p_subpic->i_status );
452 while( p_subpic->p_region )
454 subpicture_region_t *p_region = p_subpic->p_region;
455 p_subpic->p_region = p_region->p_next;
456 spu_DestroyRegion( p_spu, p_region );
459 if( p_subpic->pf_destroy )
461 p_subpic->pf_destroy( p_subpic );
464 p_subpic->i_status = FREE_SUBPICTURE;
466 vlc_mutex_unlock( &p_spu->subpicture_lock );
469 /*****************************************************************************
470 * spu_RenderSubpictures: render a subpicture list
471 *****************************************************************************
472 * This function renders all sub picture units in the list.
473 *****************************************************************************/
474 void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
475 picture_t *p_pic_dst, picture_t *p_pic_src,
476 subpicture_t *p_subpic,
477 int i_scale_width_orig, int i_scale_height_orig )
480 vlc_mutex_lock( &p_spu->subpicture_lock );
482 /* Check i_status again to make sure spudec hasn't destroyed the subpic */
483 while( p_subpic != NULL && p_subpic->i_status != FREE_SUBPICTURE )
485 subpicture_region_t *p_region = p_subpic->p_region;
486 int i_scale_width, i_scale_height;
487 int i_subpic_x = p_subpic->i_x;
489 /* Load the blending module */
490 if( !p_spu->p_blend && p_region )
492 p_spu->p_blend = vlc_object_create( p_spu, VLC_OBJECT_FILTER );
493 vlc_object_attach( p_spu->p_blend, p_spu );
494 p_spu->p_blend->fmt_out.video.i_x_offset =
495 p_spu->p_blend->fmt_out.video.i_y_offset = 0;
496 p_spu->p_blend->fmt_out.video.i_aspect = p_fmt->i_aspect;
497 p_spu->p_blend->fmt_out.video.i_chroma = p_fmt->i_chroma;
498 p_spu->p_blend->fmt_in.video.i_chroma = VLC_FOURCC('Y','U','V','P');
500 p_spu->p_blend->p_module =
501 module_Need( p_spu->p_blend, "video blending", 0, 0 );
504 /* Load the text rendering module */
505 if( !p_spu->p_text && p_region && p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
507 char *psz_modulename = NULL;
509 p_spu->p_text = vlc_object_create( p_spu, VLC_OBJECT_FILTER );
510 vlc_object_attach( p_spu->p_text, p_spu );
512 p_spu->p_text->fmt_out.video.i_width =
513 p_spu->p_text->fmt_out.video.i_visible_width =
515 p_spu->p_text->fmt_out.video.i_height =
516 p_spu->p_text->fmt_out.video.i_visible_height =
519 p_spu->p_text->pf_sub_buffer_new = spu_new_buffer;
520 p_spu->p_text->pf_sub_buffer_del = spu_del_buffer;
522 psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
523 if( psz_modulename && *psz_modulename )
525 p_spu->p_text->p_module =
526 module_Need( p_spu->p_text, "text renderer", psz_modulename, VLC_TRUE );
528 if( !p_spu->p_text->p_module )
530 p_spu->p_text->p_module =
531 module_Need( p_spu->p_text, "text renderer", 0, 0 );
533 if( psz_modulename ) free( psz_modulename );
537 if( p_subpic->i_original_picture_height > 0 &&
538 p_subpic->i_original_picture_width > 0 )
540 p_spu->p_text->fmt_out.video.i_width =
541 p_spu->p_text->fmt_out.video.i_visible_width =
542 p_subpic->i_original_picture_width;
543 p_spu->p_text->fmt_out.video.i_height =
544 p_spu->p_text->fmt_out.video.i_visible_height =
545 p_subpic->i_original_picture_height;
549 p_spu->p_text->fmt_out.video.i_width =
550 p_spu->p_text->fmt_out.video.i_visible_width =
552 p_spu->p_text->fmt_out.video.i_height =
553 p_spu->p_text->fmt_out.video.i_visible_height =
558 i_scale_width = i_scale_width_orig;
559 i_scale_height = i_scale_height_orig;
561 if( p_subpic->i_original_picture_height > 0 &&
562 p_subpic->i_original_picture_width > 0 )
564 i_scale_width = i_scale_width * p_fmt->i_width /
565 p_subpic->i_original_picture_width;
566 i_scale_height = i_scale_height * p_fmt->i_height /
567 p_subpic->i_original_picture_height;
569 else if( p_subpic->i_original_picture_height > 0 )
571 i_scale_height = i_scale_height * p_fmt->i_height /
572 p_subpic->i_original_picture_height;
573 i_scale_width = i_scale_height * i_scale_height / p_fmt->i_height;
576 /* Set default subpicture aspect ratio */
577 if( p_region && p_region->fmt.i_aspect &&
578 (!p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den) )
580 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
581 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
584 (!p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den) )
586 p_region->fmt.i_sar_den = p_fmt->i_sar_den;
587 p_region->fmt.i_sar_num = p_fmt->i_sar_num;
590 /* Take care of the aspect ratio */
591 if( p_region && p_region->fmt.i_sar_num * p_fmt->i_sar_den !=
592 p_region->fmt.i_sar_den * p_fmt->i_sar_num )
594 i_scale_width = i_scale_width *
595 (int64_t)p_region->fmt.i_sar_num * p_fmt->i_sar_den /
596 p_region->fmt.i_sar_den / p_fmt->i_sar_num;
597 i_subpic_x = p_subpic->i_x * i_scale_width / 1000;
600 /* Load the scaling module */
601 if( !p_spu->p_scale && (i_scale_width != 1000 ||
602 i_scale_height != 1000) )
604 p_spu->p_scale = vlc_object_create( p_spu, VLC_OBJECT_FILTER );
605 vlc_object_attach( p_spu->p_scale, p_spu );
606 p_spu->p_scale->fmt_out.video.i_chroma =
607 p_spu->p_scale->fmt_in.video.i_chroma =
608 VLC_FOURCC('Y','U','V','P');
609 p_spu->p_scale->fmt_in.video.i_width =
610 p_spu->p_scale->fmt_in.video.i_height = 32;
611 p_spu->p_scale->fmt_out.video.i_width =
612 p_spu->p_scale->fmt_out.video.i_height = 16;
614 p_spu->p_scale->pf_vout_buffer_new = spu_new_video_buffer;
615 p_spu->p_scale->pf_vout_buffer_del = spu_del_video_buffer;
616 p_spu->p_scale->p_module =
617 module_Need( p_spu->p_scale, "video filter2", 0, 0 );
620 while( p_region && p_spu->p_blend && p_spu->p_blend->pf_video_blend )
622 int i_fade_alpha = 255;
623 int i_x_offset = p_region->i_x + i_subpic_x;
624 int i_y_offset = p_region->i_y + p_subpic->i_y;
626 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
628 if( p_spu->p_text && p_spu->p_text->p_module &&
629 p_spu->p_text->pf_render_text )
631 p_region->i_align = p_subpic->i_flags;
632 p_spu->p_text->pf_render_text( p_spu->p_text,
633 p_region, p_region );
637 /* Force palette if requested */
638 if( p_spu->b_force_palette && VLC_FOURCC('Y','U','V','P') ==
639 p_region->fmt.i_chroma )
641 memcpy( p_region->fmt.p_palette->palette,
642 p_spu->palette, 16 );
645 /* Scale SPU if necessary */
646 if( p_region->p_cache )
648 if( i_scale_width * p_region->fmt.i_width / 1000 !=
649 p_region->p_cache->fmt.i_width ||
650 i_scale_height * p_region->fmt.i_height / 1000 !=
651 p_region->p_cache->fmt.i_height )
653 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
655 p_region->p_cache = 0;
659 if( (i_scale_width != 1000 || i_scale_height != 1000) &&
660 p_spu->p_scale && !p_region->p_cache )
664 p_spu->p_scale->fmt_in.video = p_region->fmt;
665 p_spu->p_scale->fmt_out.video = p_region->fmt;
668 p_subpic->pf_create_region( VLC_OBJECT(p_spu),
669 &p_spu->p_scale->fmt_out.video );
670 if( p_spu->p_scale->fmt_out.video.p_palette )
671 *p_spu->p_scale->fmt_out.video.p_palette =
672 *p_region->fmt.p_palette;
673 p_region->p_cache->p_next = p_region->p_next;
675 vout_CopyPicture( p_spu, &p_region->p_cache->picture,
676 &p_region->picture );
678 p_spu->p_scale->fmt_out.video.i_width =
679 p_region->fmt.i_width * i_scale_width / 1000;
680 p_spu->p_scale->fmt_out.video.i_visible_width =
681 p_region->fmt.i_visible_width * i_scale_width / 1000;
682 p_spu->p_scale->fmt_out.video.i_height =
683 p_region->fmt.i_height * i_scale_height / 1000;
684 p_spu->p_scale->fmt_out.video.i_visible_height =
685 p_region->fmt.i_visible_height * i_scale_height / 1000;
686 p_region->p_cache->fmt = p_spu->p_scale->fmt_out.video;
687 p_region->p_cache->i_x = p_region->i_x * i_scale_width / 1000;
688 p_region->p_cache->i_y = p_region->i_y * i_scale_height / 1000;
690 p_pic = p_spu->p_scale->pf_video_filter(
691 p_spu->p_scale, &p_region->p_cache->picture );
694 picture_t p_pic_tmp = p_region->p_cache->picture;
695 p_region->p_cache->picture = *p_pic;
700 if( (i_scale_width != 1000 || i_scale_height != 1000) &&
701 p_spu->p_scale && p_region->p_cache )
703 p_region = p_region->p_cache;
706 if( p_subpic->i_flags & SUBPICTURE_ALIGN_BOTTOM )
708 i_y_offset = p_fmt->i_height - p_region->fmt.i_height -
711 else if ( !(p_subpic->i_flags & SUBPICTURE_ALIGN_TOP) )
713 i_y_offset = p_fmt->i_height / 2 - p_region->fmt.i_height / 2;
716 if( p_subpic->i_flags & SUBPICTURE_ALIGN_RIGHT )
718 i_x_offset = p_fmt->i_width - p_region->fmt.i_width -
721 else if ( !(p_subpic->i_flags & SUBPICTURE_ALIGN_LEFT) )
723 i_x_offset = p_fmt->i_width / 2 - p_region->fmt.i_width / 2;
726 if( p_subpic->b_absolute )
728 i_x_offset = p_region->i_x +
729 i_subpic_x * i_scale_width / 1000;
730 i_y_offset = p_region->i_y +
731 p_subpic->i_y * i_scale_height / 1000;
735 if( p_spu->i_margin != 0 && p_spu->b_force_crop == VLC_FALSE )
738 int i_low = i_y_offset - p_spu->i_margin;
739 int i_high = i_y_offset + p_region->fmt.i_height - p_spu->i_margin;
741 /* crop extra margin to keep within bounds */
742 if( i_low < 0 ) i_diff = i_low;
743 if( i_high > (int)p_fmt->i_height ) i_diff = i_high - p_fmt->i_height;
744 i_y_offset -= ( p_spu->i_margin + i_diff );
747 p_spu->p_blend->fmt_in.video = p_region->fmt;
749 /* Force cropping if requested */
750 if( p_spu->b_force_crop )
752 video_format_t *p_fmt = &p_spu->p_blend->fmt_in.video;
753 int i_crop_x = p_spu->i_crop_x * i_scale_width / 1000;
754 int i_crop_y = p_spu->i_crop_y * i_scale_height / 1000;
755 int i_crop_width = p_spu->i_crop_width * i_scale_width / 1000;
756 int i_crop_height = p_spu->i_crop_height * i_scale_height/1000;
758 /* Find the intersection */
759 if( i_crop_x + i_crop_width <= i_x_offset ||
760 i_x_offset + (int)p_fmt->i_visible_width < i_crop_x ||
761 i_crop_y + i_crop_height <= i_y_offset ||
762 i_y_offset + (int)p_fmt->i_visible_height < i_crop_y )
764 /* No intersection */
765 p_fmt->i_visible_width = p_fmt->i_visible_height = 0;
769 int i_x, i_y, i_x_end, i_y_end;
770 i_x = __MAX( i_crop_x, i_x_offset );
771 i_y = __MAX( i_crop_y, i_y_offset );
772 i_x_end = __MIN( i_crop_x + i_crop_width,
773 i_x_offset + (int)p_fmt->i_visible_width );
774 i_y_end = __MIN( i_crop_y + i_crop_height,
775 i_y_offset + (int)p_fmt->i_visible_height );
777 p_fmt->i_x_offset = i_x - i_x_offset;
778 p_fmt->i_y_offset = i_y - i_y_offset;
779 p_fmt->i_visible_width = i_x_end - i_x;
780 p_fmt->i_visible_height = i_y_end - i_y;
787 /* Update the output picture size */
788 p_spu->p_blend->fmt_out.video.i_width =
789 p_spu->p_blend->fmt_out.video.i_visible_width =
791 p_spu->p_blend->fmt_out.video.i_height =
792 p_spu->p_blend->fmt_out.video.i_visible_height =
795 if( p_subpic->b_fade )
797 mtime_t i_fade_start = ( p_subpic->i_stop +
798 p_subpic->i_start ) / 2;
799 mtime_t i_now = mdate();
800 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
802 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
803 ( p_subpic->i_stop - i_fade_start );
807 p_spu->p_blend->pf_video_blend( p_spu->p_blend, p_pic_dst,
808 p_pic_src, &p_region->picture, i_x_offset, i_y_offset,
809 i_fade_alpha * p_subpic->i_alpha / 255 );
811 p_region = p_region->p_next;
814 p_subpic = p_subpic->p_next;
817 vlc_mutex_unlock( &p_spu->subpicture_lock );
820 /*****************************************************************************
821 * spu_SortSubpictures: find the subpictures to display
822 *****************************************************************************
823 * This function parses all subpictures and decides which ones need to be
824 * displayed. This operation does not need lock, since only READY_SUBPICTURE
825 * are handled. If no picture has been selected, display_date will depend on
827 * We also check for ephemer DVD subpictures (subpictures that have
828 * to be removed if a newer one is available), which makes it a lot
829 * more difficult to guess if a subpicture has to be rendered or not.
830 *****************************************************************************/
831 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
832 vlc_bool_t b_paused )
834 int i_index, i_channel;
835 subpicture_t *p_subpic = NULL;
836 subpicture_t *p_ephemer;
837 mtime_t ephemer_date;
839 /* Run subpicture filters */
840 for( i_index = 0; i_index < p_spu->i_filter; i_index++ )
842 subpicture_t *p_subpic_filter;
843 p_subpic_filter = p_spu->pp_filter[i_index]->
844 pf_sub_filter( p_spu->pp_filter[i_index], display_date );
845 if( p_subpic_filter )
847 spu_DisplaySubpicture( p_spu, p_subpic_filter );
851 /* We get an easily parsable chained list of subpictures which
852 * ends with NULL since p_subpic was initialized to NULL. */
853 for( i_channel = 0; i_channel < p_spu->i_channel; i_channel++ )
858 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
860 if( p_spu->p_subpicture[i_index].i_channel != i_channel ||
861 p_spu->p_subpicture[i_index].i_status != READY_SUBPICTURE )
866 display_date < p_spu->p_subpicture[i_index].i_start )
868 /* Too early, come back next monday */
872 if( p_spu->p_subpicture[i_index].i_start > ephemer_date )
873 ephemer_date = p_spu->p_subpicture[i_index].i_start;
875 if( display_date > p_spu->p_subpicture[i_index].i_stop &&
876 ( !p_spu->p_subpicture[i_index].b_ephemer ||
877 p_spu->p_subpicture[i_index].i_stop >
878 p_spu->p_subpicture[i_index].i_start ) &&
879 !( p_spu->p_subpicture[i_index].b_pausable &&
882 /* Too late, destroy the subpic */
883 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
887 /* If this is an ephemer subpic, add it to our list */
888 if( p_spu->p_subpicture[i_index].b_ephemer )
890 p_spu->p_subpicture[i_index].p_next = p_ephemer;
891 p_ephemer = &p_spu->p_subpicture[i_index];
896 p_spu->p_subpicture[i_index].p_next = p_subpic;
897 p_subpic = &p_spu->p_subpicture[i_index];
900 /* If we found ephemer subpictures, check if they have to be
901 * displayed or destroyed */
902 while( p_ephemer != NULL )
904 subpicture_t *p_tmp = p_ephemer;
905 p_ephemer = p_ephemer->p_next;
907 if( p_tmp->i_start < ephemer_date )
909 /* Ephemer subpicture has lived too long */
910 spu_DestroySubpicture( p_spu, p_tmp );
914 /* Ephemer subpicture can still live a bit */
915 p_tmp->p_next = p_subpic;
924 /*****************************************************************************
925 * SpuClearChannel: clear an spu channel
926 *****************************************************************************
927 * This function destroys the subpictures which belong to the spu channel
928 * corresponding to i_channel_id.
929 *****************************************************************************/
930 static void SpuClearChannel( spu_t *p_spu, int i_channel )
932 int i_subpic; /* subpicture index */
933 subpicture_t *p_subpic = NULL; /* first free subpicture */
935 vlc_mutex_lock( &p_spu->subpicture_lock );
937 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
939 p_subpic = &p_spu->p_subpicture[i_subpic];
940 if( p_subpic->i_status == FREE_SUBPICTURE
941 || ( p_subpic->i_status != RESERVED_SUBPICTURE
942 && p_subpic->i_status != READY_SUBPICTURE ) )
947 if( p_subpic->i_channel == i_channel )
949 while( p_subpic->p_region )
951 subpicture_region_t *p_region = p_subpic->p_region;
952 p_subpic->p_region = p_region->p_next;
953 spu_DestroyRegion( p_spu, p_region );
956 if( p_subpic->pf_destroy ) p_subpic->pf_destroy( p_subpic );
957 p_subpic->i_status = FREE_SUBPICTURE;
961 vlc_mutex_unlock( &p_spu->subpicture_lock );
964 /*****************************************************************************
965 * spu_ControlDefault: default methods for the subpicture unit control.
966 *****************************************************************************/
967 static int spu_vaControlDefault( spu_t *p_spu, int i_query, va_list args )
973 case SPU_CHANNEL_REGISTER:
974 pi = (int *)va_arg( args, int * );
975 if( pi ) *pi = p_spu->i_channel++;
978 case SPU_CHANNEL_CLEAR:
979 i = (int)va_arg( args, int );
980 SpuClearChannel( p_spu, i );
984 msg_Dbg( p_spu, "control query not supported" );
991 /*****************************************************************************
992 * Object variables callbacks
993 *****************************************************************************/
995 /*****************************************************************************
996 * UpdateSPU: update subpicture settings
997 *****************************************************************************
998 * This function is called from CropCallback and at initialization time, to
999 * retrieve crop information from the input.
1000 *****************************************************************************/
1001 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1005 p_spu->b_force_palette = VLC_FALSE;
1006 p_spu->b_force_crop = VLC_FALSE;
1008 if( var_Get( p_object, "highlight", &val ) || !val.b_bool ) return;
1010 p_spu->b_force_crop = VLC_TRUE;
1011 var_Get( p_object, "x-start", &val );
1012 p_spu->i_crop_x = val.i_int;
1013 var_Get( p_object, "y-start", &val );
1014 p_spu->i_crop_y = val.i_int;
1015 var_Get( p_object, "x-end", &val );
1016 p_spu->i_crop_width = val.i_int - p_spu->i_crop_x;
1017 var_Get( p_object, "y-end", &val );
1018 p_spu->i_crop_height = val.i_int - p_spu->i_crop_y;
1020 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1022 memcpy( p_spu->palette, val.p_address, 16 );
1023 p_spu->b_force_palette = VLC_TRUE;
1026 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1027 p_spu->i_crop_x, p_spu->i_crop_y,
1028 p_spu->i_crop_width, p_spu->i_crop_height,
1029 p_spu->b_force_palette );
1032 /*****************************************************************************
1033 * CropCallback: called when the highlight properties are changed
1034 *****************************************************************************
1035 * This callback is called from the input thread when we need cropping
1036 *****************************************************************************/
1037 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1038 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1040 UpdateSPU( (spu_t *)p_data, p_object );
1044 /*****************************************************************************
1045 * Buffers allocation callbacks for the filters
1046 *****************************************************************************/
1047 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1049 filter_owner_sys_t *p_sys = p_filter->p_owner;
1050 subpicture_t *p_subpicture = spu_CreateSubpicture( p_sys->p_spu );
1051 if( p_subpicture ) p_subpicture->i_channel = p_sys->i_channel;
1052 return p_subpicture;
1055 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1057 filter_owner_sys_t *p_sys = p_filter->p_owner;
1058 spu_DestroySubpicture( p_sys->p_spu, p_subpic );
1061 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1063 subpicture_t *p_subpic = (subpicture_t *)malloc(sizeof(subpicture_t));
1064 memset( p_subpic, 0, sizeof(subpicture_t) );
1065 p_subpic->b_absolute = VLC_TRUE;
1067 p_subpic->pf_create_region = __spu_CreateRegion;
1068 p_subpic->pf_make_region = __spu_MakeRegion;
1069 p_subpic->pf_destroy_region = __spu_DestroyRegion;
1074 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1076 while( p_subpic->p_region )
1078 subpicture_region_t *p_region = p_subpic->p_region;
1079 p_subpic->p_region = p_region->p_next;
1080 p_subpic->pf_destroy_region( VLC_OBJECT(p_filter), p_region );
1086 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1088 picture_t *p_picture = malloc( sizeof(picture_t) );
1090 if( vout_AllocatePicture( p_filter, p_picture,
1091 p_filter->fmt_out.video.i_chroma,
1092 p_filter->fmt_out.video.i_width,
1093 p_filter->fmt_out.video.i_height,
1094 p_filter->fmt_out.video.i_aspect )
1101 p_picture->pf_release = RegionPictureRelease;
1106 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_pic )
1108 if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
1109 if( p_pic ) free( p_pic );