1 /*****************************************************************************
2 * vout_subpictures.c : subpicture management functions
3 *****************************************************************************
4 * Copyright (C) 2000-2007 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 *****************************************************************************/
33 #include <vlc_common.h>
35 #include <vlc_block.h>
36 #include <vlc_filter.h>
38 #include "../libvlc.h"
42 /*****************************************************************************
44 *****************************************************************************/
45 static void UpdateSPU ( spu_t *, vlc_object_t * );
46 static int CropCallback( vlc_object_t *, char const *,
47 vlc_value_t, vlc_value_t, void * );
49 static int spu_vaControlDefault( spu_t *, int, va_list );
51 static subpicture_t *sub_new_buffer( filter_t * );
52 static void sub_del_buffer( filter_t *, subpicture_t * );
53 static subpicture_t *spu_new_buffer( filter_t * );
54 static void spu_del_buffer( filter_t *, subpicture_t * );
55 static picture_t *spu_new_video_buffer( filter_t * );
56 static void spu_del_video_buffer( filter_t *, picture_t * );
58 static int spu_ParseChain( spu_t * );
59 static int SubFilterCallback( vlc_object_t *, char const *,
60 vlc_value_t, vlc_value_t, void * );
62 static int sub_filter_allocation_init( filter_t *, void * );
63 static void sub_filter_allocation_clear( filter_t * );
64 struct filter_owner_sys_t
76 static void FilterRelease( filter_t *p_filter )
78 if( p_filter->p_module )
79 module_Unneed( p_filter, p_filter->p_module );
81 vlc_object_detach( p_filter );
82 vlc_object_release( p_filter );
86 * Creates the subpicture unit
88 * \param p_this the parent object which creates the subpicture unit
90 spu_t *__spu_Create( vlc_object_t *p_this )
93 spu_t *p_spu = vlc_custom_create( p_this, sizeof( spu_t ),
94 VLC_OBJECT_GENERIC, "subpicture" );
96 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
98 p_spu->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
101 p_spu->p_blend = NULL;
102 p_spu->p_text = NULL;
103 p_spu->p_scale = NULL;
104 p_spu->p_scale_yuvp = NULL;
105 p_spu->pf_control = spu_vaControlDefault;
107 /* Register the default subpicture channel */
108 p_spu->i_channel = 2;
110 vlc_mutex_init( &p_spu->subpicture_lock );
112 vlc_object_attach( p_spu, p_this );
114 p_spu->p_chain = filter_chain_New( p_spu, "sub filter", false,
115 sub_filter_allocation_init,
116 sub_filter_allocation_clear,
122 * Initialise the subpicture unit
124 * \param p_spu the subpicture unit object
126 int spu_Init( spu_t *p_spu )
130 /* If the user requested a sub margin, we force the position. */
131 var_Create( p_spu, "sub-margin", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
132 var_Get( p_spu, "sub-margin", &val );
133 p_spu->i_margin = val.i_int;
135 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
136 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
138 spu_ParseChain( p_spu );
143 int spu_ParseChain( spu_t *p_spu )
145 char *psz_parser = var_GetString( p_spu, "sub-filter" );
146 if( filter_chain_AppendFromString( p_spu->p_chain, psz_parser ) < 0 )
157 * Destroy the subpicture unit
159 * \param p_this the parent object which destroys the subpicture unit
161 void spu_Destroy( spu_t *p_spu )
165 /* Destroy all remaining subpictures */
166 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
168 if( p_spu->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
170 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
175 FilterRelease( p_spu->p_blend );
178 FilterRelease( p_spu->p_text );
180 if( p_spu->p_scale_yuvp )
181 FilterRelease( p_spu->p_scale_yuvp );
184 FilterRelease( p_spu->p_scale );
186 filter_chain_Delete( p_spu->p_chain );
188 vlc_mutex_destroy( &p_spu->subpicture_lock );
189 vlc_object_release( p_spu );
193 * Attach/Detach the SPU from any input
195 * \param p_this the object in which to destroy the subpicture unit
196 * \param b_attach to select attach or detach
198 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
200 vlc_object_t *p_input;
202 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
203 if( !p_input ) return;
207 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
208 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
209 vlc_object_release( p_input );
213 /* Delete callback */
214 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
215 vlc_object_release( p_input );
220 * Create a subpicture region
222 * \param p_this vlc_object_t
223 * \param p_fmt the format that this subpicture region should have
225 static void RegionPictureRelease( picture_t *p_pic )
227 free( p_pic->p_data_orig );
228 /* We use pf_release nullity to know if the picture has already been released. */
229 p_pic->pf_release = NULL;
231 subpicture_region_t *__spu_CreateRegion( vlc_object_t *p_this,
232 video_format_t *p_fmt )
234 subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
235 if( !p_region ) return NULL;
237 memset( p_region, 0, sizeof(subpicture_region_t) );
238 p_region->i_alpha = 0xff;
239 p_region->p_next = NULL;
240 p_region->p_cache = NULL;
241 p_region->fmt = *p_fmt;
242 p_region->psz_text = NULL;
243 p_region->p_style = NULL;
245 if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
246 p_fmt->p_palette = p_region->fmt.p_palette =
247 malloc( sizeof(video_palette_t) );
248 else p_fmt->p_palette = p_region->fmt.p_palette = NULL;
250 p_region->picture.p_data_orig = NULL;
252 if( p_fmt->i_chroma == VLC_FOURCC('T','E','X','T') ) return p_region;
254 vout_AllocatePicture( p_this, &p_region->picture, p_fmt->i_chroma,
255 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
257 if( !p_region->picture.i_planes )
260 free( p_fmt->p_palette );
264 p_region->picture.pf_release = RegionPictureRelease;
270 * Make a subpicture region from an existing picture_t
272 * \param p_this vlc_object_t
273 * \param p_fmt the format that this subpicture region should have
274 * \param p_pic a pointer to the picture creating the region (not freed)
276 subpicture_region_t *__spu_MakeRegion( vlc_object_t *p_this,
277 video_format_t *p_fmt,
280 subpicture_region_t *p_region = malloc( sizeof(subpicture_region_t) );
282 if( !p_region ) return NULL;
283 memset( p_region, 0, sizeof(subpicture_region_t) );
284 p_region->i_alpha = 0xff;
285 p_region->p_next = 0;
286 p_region->p_cache = 0;
287 p_region->fmt = *p_fmt;
288 p_region->psz_text = 0;
289 p_region->p_style = NULL;
291 if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
292 p_fmt->p_palette = p_region->fmt.p_palette =
293 malloc( sizeof(video_palette_t) );
294 else p_fmt->p_palette = p_region->fmt.p_palette = NULL;
296 memcpy( &p_region->picture, p_pic, sizeof(picture_t) );
297 p_region->picture.pf_release = RegionPictureRelease;
303 * Destroy a subpicture region
305 * \param p_this vlc_object_t
306 * \param p_region the subpicture region to destroy
308 void __spu_DestroyRegion( vlc_object_t *p_this, subpicture_region_t *p_region )
310 if( !p_region ) return;
311 if( p_region->picture.pf_release )
312 p_region->picture.pf_release( &p_region->picture );
313 free( p_region->fmt.p_palette );
314 if( p_region->p_cache ) __spu_DestroyRegion( p_this, p_region->p_cache );
316 free( p_region->psz_text );
317 free( p_region->psz_html );
318 //free( p_region->p_style ); FIXME --fenrir plugin does not allocate the memory for it. I think it might lead to segfault, video renderer can live longer than the decoder
323 * Display a subpicture
325 * Remove the reservation flag of a subpicture, which will cause it to be
327 * \param p_spu the subpicture unit object
328 * \param p_subpic the subpicture to display
330 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
332 /* Check if status is valid */
333 if( p_subpic->i_status != RESERVED_SUBPICTURE )
335 msg_Err( p_spu, "subpicture %p has invalid status #%d",
336 p_subpic, p_subpic->i_status );
339 /* Remove reservation flag */
340 p_subpic->i_status = READY_SUBPICTURE;
342 if( p_subpic->i_channel == DEFAULT_CHAN )
344 p_subpic->i_channel = 0xFFFF;
345 spu_Control( p_spu, SPU_CHANNEL_CLEAR, DEFAULT_CHAN );
346 p_subpic->i_channel = DEFAULT_CHAN;
351 * Allocate a subpicture in the spu heap.
353 * This function create a reserved subpicture in the spu heap.
354 * A null pointer is returned if the function fails. This method provides an
355 * already allocated zone of memory in the spu data fields. It needs locking
356 * since several pictures can be created by several producers threads.
357 * \param p_spu the subpicture unit in which to create the subpicture
358 * \return NULL on error, a reserved subpicture otherwise
360 subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
362 int i_subpic; /* subpicture index */
363 subpicture_t * p_subpic = NULL; /* first free subpicture */
366 vlc_mutex_lock( &p_spu->subpicture_lock );
369 * Look for an empty place
372 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
374 if( p_spu->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )
376 /* Subpicture is empty and ready for allocation */
377 p_subpic = &p_spu->p_subpicture[i_subpic];
378 p_spu->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
383 /* If no free subpicture could be found */
384 if( p_subpic == NULL )
386 msg_Err( p_spu, "subpicture heap is full" );
387 vlc_mutex_unlock( &p_spu->subpicture_lock );
391 /* Copy subpicture information, set some default values */
392 memset( p_subpic, 0, sizeof(subpicture_t) );
393 p_subpic->i_status = RESERVED_SUBPICTURE;
394 p_subpic->b_absolute = true;
395 p_subpic->b_pausable = false;
396 p_subpic->b_fade = false;
397 p_subpic->i_alpha = 0xFF;
398 p_subpic->p_region = NULL;
399 p_subpic->pf_render = NULL;
400 p_subpic->pf_destroy = NULL;
401 p_subpic->p_sys = NULL;
402 vlc_mutex_unlock( &p_spu->subpicture_lock );
404 p_subpic->pf_create_region = __spu_CreateRegion;
405 p_subpic->pf_make_region = __spu_MakeRegion;
406 p_subpic->pf_destroy_region = __spu_DestroyRegion;
412 * Remove a subpicture from the heap
414 * This function frees a previously reserved subpicture.
415 * It is meant to be used when the construction of a picture aborted.
416 * This function does not need locking since reserved subpictures are ignored
419 void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
422 vlc_mutex_lock( &p_spu->subpicture_lock );
424 /* There can be race conditions so we need to check the status */
425 if( p_subpic->i_status == FREE_SUBPICTURE )
427 vlc_mutex_unlock( &p_spu->subpicture_lock );
431 /* Check if status is valid */
432 if( ( p_subpic->i_status != RESERVED_SUBPICTURE )
433 && ( p_subpic->i_status != READY_SUBPICTURE ) )
435 msg_Err( p_spu, "subpicture %p has invalid status %d",
436 p_subpic, p_subpic->i_status );
439 while( p_subpic->p_region )
441 subpicture_region_t *p_region = p_subpic->p_region;
442 p_subpic->p_region = p_region->p_next;
443 spu_DestroyRegion( p_spu, p_region );
446 if( p_subpic->pf_destroy )
448 p_subpic->pf_destroy( p_subpic );
451 p_subpic->i_status = FREE_SUBPICTURE;
453 vlc_mutex_unlock( &p_spu->subpicture_lock );
456 /*****************************************************************************
457 * spu_RenderSubpictures: render a subpicture list
458 *****************************************************************************
459 * This function renders all sub picture units in the list.
460 *****************************************************************************/
461 static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
465 assert( !p_spu->p_blend );
468 p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
469 VLC_OBJECT_GENERIC, "blend" );
473 es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
475 es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
476 p_blend->fmt_out.video.i_x_offset = 0;
477 p_blend->fmt_out.video.i_y_offset = 0;
478 p_blend->fmt_out.video.i_chroma = i_chroma;
479 p_blend->fmt_out.video.i_aspect = i_aspect;
481 /* The blend module will be loaded when needed with the real
483 p_blend->p_module = NULL;
486 vlc_object_attach( p_blend, p_spu );
488 static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height, const video_format_t *p_in_fmt )
490 filter_t *p_blend = p_spu->p_blend;
495 if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
497 /* The chroma is not the same, we need to reload the blend module
498 * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
499 module_Unneed( p_blend, p_blend->p_module );
500 p_blend->p_module = NULL;
504 p_blend->fmt_in.video = *p_in_fmt;
507 p_blend->fmt_out.video.i_width =
508 p_blend->fmt_out.video.i_visible_width = i_out_width;
509 p_blend->fmt_out.video.i_height =
510 p_blend->fmt_out.video.i_visible_height = i_out_height;
513 if( !p_blend->p_module )
514 p_blend->p_module = module_Need( p_blend, "video blending", 0, 0 );
516 static void SpuRenderCreateAndLoadText( spu_t *p_spu, int i_width, int i_height )
520 assert( !p_spu->p_text );
523 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
524 VLC_OBJECT_GENERIC, "spu text" );
528 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
530 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
531 p_text->fmt_out.video.i_width =
532 p_text->fmt_out.video.i_visible_width = i_width;
533 p_text->fmt_out.video.i_height =
534 p_text->fmt_out.video.i_visible_height = i_height;
536 p_text->pf_sub_buffer_new = spu_new_buffer;
537 p_text->pf_sub_buffer_del = spu_del_buffer;
539 vlc_object_attach( p_text, p_spu );
541 /* FIXME TOCHECK shouldn't module_Need( , , psz_modulename, false ) do the
542 * same than these 2 calls ? */
543 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
544 if( psz_modulename && *psz_modulename )
546 p_text->p_module = module_Need( p_text, "text renderer",
547 psz_modulename, true );
549 free( psz_modulename );
551 if( !p_text->p_module )
552 p_text->p_module = module_Need( p_text, "text renderer", NULL, false );
555 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj, vlc_fourcc_t i_chroma )
559 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
560 VLC_OBJECT_GENERIC, "scale" );
564 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
565 p_scale->fmt_in.video.i_chroma = i_chroma;
566 p_scale->fmt_in.video.i_width =
567 p_scale->fmt_in.video.i_height = 32;
569 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
570 p_scale->fmt_out.video.i_chroma = i_chroma;
571 p_scale->fmt_out.video.i_width =
572 p_scale->fmt_out.video.i_height = 16;
574 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
575 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
577 vlc_object_attach( p_scale, p_obj );
578 p_scale->p_module = module_Need( p_scale, "video filter2", 0, 0 );
583 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
585 /* FIXME: We'll also be using it for YUVA and RGBA blending ... */
587 assert( !p_spu->p_scale );
588 assert( !p_spu->p_scale_yuvp );
589 p_spu->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','A') );
590 p_spu->p_scale_yuvp = p_spu->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','P') );
593 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
594 subpicture_t *p_subpic, subpicture_region_t *p_region, int i_min_scale_ratio )
596 assert( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') );
598 if( !p_spu->p_text || !p_spu->p_text->p_module )
601 /* Setup 3 variables which can be used to render
602 * time-dependent text (and effects). The first indicates
603 * the total amount of time the text will be on screen,
604 * the second the amount of time it has already been on
605 * screen (can be a negative value as text is layed out
606 * before it is rendered) and the third is a feedback
607 * variable from the renderer - if the renderer sets it
608 * then this particular text is time-dependent, eg. the
609 * visual progress bar inside the text in karaoke and the
610 * text needs to be rendered multiple times in order for
611 * the effect to work - we therefore need to return the
612 * region to its original state at the end of the loop,
613 * instead of leaving it in YUVA or YUVP.
614 * Any renderer which is unaware of how to render
615 * time-dependent text can happily ignore the variables
616 * and render the text the same as usual - it should at
617 * least show up on screen, but the effect won't change
618 * the text over time.
621 /* FIXME why these variables are recreated every time and not
622 * when text renderer module was created ? */
623 var_Create( p_spu->p_text, "spu-duration", VLC_VAR_TIME );
624 var_Create( p_spu->p_text, "spu-elapsed", VLC_VAR_TIME );
625 var_Create( p_spu->p_text, "text-rerender", VLC_VAR_BOOL );
626 var_Create( p_spu->p_text, "scale", VLC_VAR_INTEGER );
628 var_SetTime( p_spu->p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
629 var_SetTime( p_spu->p_text, "spu-elapsed", mdate() - p_subpic->i_start );
630 var_SetBool( p_spu->p_text, "text-rerender", false );
631 var_SetInteger( p_spu->p_text, "scale", i_min_scale_ratio );
633 if( p_spu->p_text->pf_render_html && p_region->psz_html )
635 p_spu->p_text->pf_render_html( p_spu->p_text,
636 p_region, p_region );
638 else if( p_spu->p_text->pf_render_text )
640 p_spu->p_text->pf_render_text( p_spu->p_text,
641 p_region, p_region );
643 *pb_rerender_text = var_GetBool( p_spu->p_text, "text-rerender" );
645 var_Destroy( p_spu->p_text, "spu-duration" );
646 var_Destroy( p_spu->p_text, "spu-elapsed" );
647 var_Destroy( p_spu->p_text, "text-rerender" );
648 var_Destroy( p_spu->p_text, "scale" );
651 p_region->i_align |= SUBPICTURE_RENDERED;
654 static void SpuRenderRegion( spu_t *p_spu,
655 picture_t *p_pic_dst, picture_t *p_pic_src,
656 subpicture_t *p_subpic, subpicture_region_t *p_region,
657 const int i_scale_width_orig, const int i_scale_height_orig,
658 const int pi_subpic_x[SCALE_SIZE],
659 const int pi_scale_width[SCALE_SIZE],
660 const int pi_scale_height[SCALE_SIZE],
661 const video_format_t *p_fmt )
663 video_format_t fmt_original;
664 bool b_rerender_text;
665 bool b_restore_format = false;
674 vlc_assert_locked( &p_spu->subpicture_lock );
676 fmt_original = p_region->fmt;
677 b_rerender_text = false;
678 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
680 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, __MIN(i_scale_width_orig, i_scale_height_orig) );
681 b_restore_format = b_rerender_text;
683 /* Check if the rendering has failed ... */
684 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
688 if( p_region->i_align & SUBPICTURE_RENDERED )
690 /* We are using a region which come from rendered text */
691 i_scale_idx = SCALE_TEXT;
692 i_inv_scale_x = i_scale_width_orig;
693 i_inv_scale_y = i_scale_height_orig;
697 i_scale_idx = SCALE_DEFAULT;
698 i_inv_scale_x = 1000;
699 i_inv_scale_y = 1000;
702 i_x_offset = (p_region->i_x + pi_subpic_x[ i_scale_idx ]) * i_inv_scale_x / 1000;
703 i_y_offset = (p_region->i_y + p_subpic->i_y) * i_inv_scale_y / 1000;
705 /* Force palette if requested
706 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
707 * instead of only the right one (being the dvd spu).
709 const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC('Y','U','V','P');
710 const bool b_force_palette = b_using_palette && p_spu->b_force_palette;
711 const bool b_force_crop = b_force_palette && p_spu->b_force_crop;
713 if( b_force_palette )
715 /* It looks so wrong I won't comment
716 * p_palette->palette is [256][4] with a int i_entries
717 * p_spu->palette is [4][4]
719 p_region->fmt.p_palette->i_entries = 4;
720 memcpy( p_region->fmt.p_palette->palette, p_spu->palette, 4*sizeof(uint32_t) );
723 if( b_using_palette )
724 p_scale = p_spu->p_scale_yuvp;
726 p_scale = p_spu->p_scale;
729 ( ( pi_scale_width[i_scale_idx] > 0 && pi_scale_width[i_scale_idx] != 1000 ) ||
730 ( pi_scale_height[i_scale_idx] > 0 && pi_scale_height[i_scale_idx] != 1000 ) ||
731 ( b_force_palette ) ) )
733 const unsigned i_dst_width = p_region->fmt.i_width * pi_scale_width[i_scale_idx] / 1000;
734 const unsigned i_dst_height = p_region->fmt.i_height * pi_scale_height[i_scale_idx] / 1000;
736 /* Destroy if cache is unusable */
737 if( p_region->p_cache )
739 if( p_region->p_cache->fmt.i_width != i_dst_width ||
740 p_region->p_cache->fmt.i_height != i_dst_height ||
743 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
745 p_region->p_cache = NULL;
749 /* Scale if needed into cache */
750 if( !p_region->p_cache )
754 p_scale->fmt_in.video = p_region->fmt;
755 p_scale->fmt_out.video = p_region->fmt;
758 p_subpic->pf_create_region( VLC_OBJECT(p_spu),
759 &p_scale->fmt_out.video );
760 p_region->p_cache->p_next = p_region->p_next;
762 if( p_scale->fmt_out.video.p_palette )
763 *p_scale->fmt_out.video.p_palette =
764 *p_region->fmt.p_palette;
766 vout_CopyPicture( p_spu, &p_region->p_cache->picture,
767 &p_region->picture );
769 p_scale->fmt_out.video.i_width = i_dst_width;
770 p_scale->fmt_out.video.i_height = i_dst_height;
772 p_scale->fmt_out.video.i_visible_width =
773 p_region->fmt.i_visible_width * pi_scale_width[ i_scale_idx ] / 1000;
774 p_scale->fmt_out.video.i_visible_height =
775 p_region->fmt.i_visible_height * pi_scale_height[ i_scale_idx ] / 1000;
777 p_region->p_cache->fmt = p_scale->fmt_out.video;
778 p_region->p_cache->i_x = p_region->i_x * pi_scale_width[ i_scale_idx ] / 1000;
779 p_region->p_cache->i_y = p_region->i_y * pi_scale_height[ i_scale_idx ] / 1000;
780 p_region->p_cache->i_align = p_region->i_align;
781 p_region->p_cache->i_alpha = p_region->i_alpha;
784 if( p_scale->p_module )
785 p_pic = p_scale->pf_video_filter( p_scale, &p_region->p_cache->picture );
787 msg_Err( p_spu, "scaling failed (module not loaded)" );
790 p_region->p_cache->picture = *p_pic;
795 /* And use the scaled picture */
796 if( p_region->p_cache )
798 p_region = p_region->p_cache;
799 fmt_original = p_region->fmt;
803 if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
805 i_y_offset = p_fmt->i_height - p_region->fmt.i_height -
806 (p_subpic->i_y + p_region->i_y) * i_inv_scale_y / 1000;
808 else if ( !(p_region->i_align & SUBPICTURE_ALIGN_TOP) )
810 i_y_offset = p_fmt->i_height / 2 - p_region->fmt.i_height / 2;
813 if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
815 i_x_offset = p_fmt->i_width - p_region->fmt.i_width -
816 (pi_subpic_x[ i_scale_idx ] + p_region->i_x)
817 * i_inv_scale_x / 1000;
819 else if ( !(p_region->i_align & SUBPICTURE_ALIGN_LEFT) )
821 i_x_offset = p_fmt->i_width / 2 - p_region->fmt.i_width / 2;
824 if( p_subpic->b_absolute )
826 i_x_offset = (p_region->i_x +
827 pi_subpic_x[ i_scale_idx ] *
828 pi_scale_width[ i_scale_idx ] / 1000)
829 * i_inv_scale_x / 1000;
830 i_y_offset = (p_region->i_y +
831 p_subpic->i_y * pi_scale_height[ i_scale_idx ] / 1000)
832 * i_inv_scale_y / 1000;
836 i_x_offset = __MAX( i_x_offset, 0 );
837 i_y_offset = __MAX( i_y_offset, 0 );
839 if( p_spu->i_margin != 0 && !b_force_crop )
842 int i_low = (i_y_offset - p_spu->i_margin) * i_inv_scale_y / 1000;
843 int i_high = i_low + p_region->fmt.i_height;
845 /* crop extra margin to keep within bounds */
848 if( i_high > (int)p_fmt->i_height )
849 i_diff = i_high - p_fmt->i_height;
850 i_y_offset -= ( p_spu->i_margin * i_inv_scale_y / 1000 + i_diff );
853 /* Force cropping if requested */
856 video_format_t *p_fmt = &p_region->fmt;
857 int i_crop_x = p_spu->i_crop_x * pi_scale_width[ i_scale_idx ] / 1000
858 * i_inv_scale_x / 1000;
859 int i_crop_y = p_spu->i_crop_y * pi_scale_height[ i_scale_idx ] / 1000
860 * i_inv_scale_y / 1000;
861 int i_crop_width = p_spu->i_crop_width * pi_scale_width[ i_scale_idx ] / 1000
862 * i_inv_scale_x / 1000;
863 int i_crop_height = p_spu->i_crop_height * pi_scale_height[ i_scale_idx ] / 1000
864 * i_inv_scale_y / 1000;
866 /* Find the intersection */
867 if( i_crop_x + i_crop_width <= i_x_offset ||
868 i_x_offset + (int)p_fmt->i_visible_width < i_crop_x ||
869 i_crop_y + i_crop_height <= i_y_offset ||
870 i_y_offset + (int)p_fmt->i_visible_height < i_crop_y )
872 /* No intersection */
873 p_fmt->i_visible_width = p_fmt->i_visible_height = 0;
877 int i_x, i_y, i_x_end, i_y_end;
878 i_x = __MAX( i_crop_x, i_x_offset );
879 i_y = __MAX( i_crop_y, i_y_offset );
880 i_x_end = __MIN( i_crop_x + i_crop_width,
881 i_x_offset + (int)p_fmt->i_visible_width );
882 i_y_end = __MIN( i_crop_y + i_crop_height,
883 i_y_offset + (int)p_fmt->i_visible_height );
885 p_fmt->i_x_offset = i_x - i_x_offset;
886 p_fmt->i_y_offset = i_y - i_y_offset;
887 p_fmt->i_visible_width = i_x_end - i_x;
888 p_fmt->i_visible_height = i_y_end - i_y;
893 b_restore_format = true;
896 i_x_offset = __MAX( i_x_offset, 0 );
897 i_y_offset = __MAX( i_y_offset, 0 );
899 /* Compute alpha blend value */
901 if( p_subpic->b_fade )
903 mtime_t i_fade_start = ( p_subpic->i_stop +
904 p_subpic->i_start ) / 2;
905 mtime_t i_now = mdate();
906 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
908 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
909 ( p_subpic->i_stop - i_fade_start );
913 /* Update the blender */
914 SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, &p_region->fmt );
916 if( p_spu->p_blend->p_module )
918 p_spu->p_blend->pf_video_blend( p_spu->p_blend, p_pic_dst,
919 p_pic_src, &p_region->picture, i_x_offset, i_y_offset,
920 i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025 );
924 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
925 (char *)&p_spu->p_blend->fmt_out.video.i_chroma,
926 (char *)&p_spu->p_blend->fmt_out.video.i_chroma );
930 if( b_rerender_text )
932 /* Some forms of subtitles need to be re-rendered more than
933 * once, eg. karaoke. We therefore restore the region to its
934 * pre-rendered state, so the next time through everything is
937 p_region->picture.pf_release( &p_region->picture );
938 memset( &p_region->picture, 0, sizeof( picture_t ) );
939 p_region->i_align &= ~SUBPICTURE_RENDERED;
941 if( b_restore_format )
942 p_region->fmt = fmt_original;
945 void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt,
946 picture_t *p_pic_dst, picture_t *p_pic_src,
947 subpicture_t *p_subpic,
948 int i_scale_width_orig, int i_scale_height_orig )
950 int i_source_video_width;
951 int i_source_video_height;
952 subpicture_t *p_subpic_v;
955 vlc_mutex_lock( &p_spu->subpicture_lock );
957 for( p_subpic_v = p_subpic;
958 p_subpic_v != NULL && p_subpic_v->i_status != FREE_SUBPICTURE;
959 p_subpic_v = p_subpic_v->p_next )
961 if( p_subpic_v->pf_pre_render )
962 p_subpic_v->pf_pre_render( p_fmt, p_spu, p_subpic_v );
965 if( i_scale_width_orig <= 0 )
966 i_scale_width_orig = 1000;
967 if( i_scale_height_orig <= 0 )
968 i_scale_height_orig = 1000;
970 i_source_video_width = p_fmt->i_width * 1000 / i_scale_width_orig;
971 i_source_video_height = p_fmt->i_height * 1000 / i_scale_height_orig;
973 /* Check i_status again to make sure spudec hasn't destroyed the subpic */
974 for( ; ( p_subpic != NULL ) && ( p_subpic->i_status != FREE_SUBPICTURE ); p_subpic = p_subpic->p_next )
976 subpicture_region_t *p_region;
977 int pi_scale_width[ SCALE_SIZE ];
978 int pi_scale_height[ SCALE_SIZE ];
979 int pi_subpic_x[ SCALE_SIZE ];
982 /* If the source video and subtitles stream agree on the size of
983 * the video then disregard all further references to the subtitle
986 if( ( i_source_video_height == p_subpic->i_original_picture_height ) &&
987 ( i_source_video_width == p_subpic->i_original_picture_width ) )
989 /* FIXME this looks wrong */
990 p_subpic->i_original_picture_height = 0;
991 p_subpic->i_original_picture_width = 0;
994 for( k = 0; k < SCALE_SIZE ; k++ )
995 pi_subpic_x[ k ] = p_subpic->i_x;
997 if( p_subpic->pf_update_regions )
999 /* TODO do not reverse the scaling that was done before calling
1000 * spu_RenderSubpictures, just pass it along (or do it inside
1001 * spu_RenderSubpictures) */
1002 video_format_t fmt_org = *p_fmt;
1004 fmt_org.i_visible_width = i_source_video_width;
1006 fmt_org.i_visible_height = i_source_video_height;
1008 p_subpic->pf_update_regions( &fmt_org, p_spu, p_subpic, mdate() );
1012 p_region = p_subpic->p_region;
1016 /* Create the blending module */
1017 if( !p_spu->p_blend )
1018 SpuRenderCreateBlend( p_spu, p_fmt->i_chroma, p_fmt->i_aspect );
1020 /* Load the text rendering module; it is possible there is a
1021 * text region somewhere in the subpicture other than the first
1022 * element in the region list, so just load it anyway as we'll
1023 * probably want it sooner or later. */
1024 if( !p_spu->p_text )
1025 SpuRenderCreateAndLoadText( p_spu, p_fmt->i_width, p_fmt->i_height );
1029 subpicture_region_t *p_text_region = p_subpic->p_region;
1031 /* Only overwrite the size fields if the region is still in
1032 * pre-rendered TEXT format. We have to traverse the subregion
1033 * list because if more than one subregion is present, the text
1034 * region isn't guarentteed to be the first in the list, and
1035 * only text regions use this flag. All of this effort assists
1036 * with the rescaling of text that has been rendered at native
1037 * resolution, rather than video resolution.
1039 while( p_text_region &&
1040 p_text_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') )
1042 p_text_region = p_text_region->p_next;
1045 if( p_text_region &&
1046 ( ( p_text_region->i_align & SUBPICTURE_RENDERED ) == 0 ) )
1048 if( p_subpic->i_original_picture_height > 0 &&
1049 p_subpic->i_original_picture_width > 0 )
1051 p_spu->p_text->fmt_out.video.i_width =
1052 p_spu->p_text->fmt_out.video.i_visible_width =
1053 p_subpic->i_original_picture_width;
1054 p_spu->p_text->fmt_out.video.i_height =
1055 p_spu->p_text->fmt_out.video.i_visible_height =
1056 p_subpic->i_original_picture_height;
1060 p_spu->p_text->fmt_out.video.i_width =
1061 p_spu->p_text->fmt_out.video.i_visible_width =
1063 p_spu->p_text->fmt_out.video.i_height =
1064 p_spu->p_text->fmt_out.video.i_visible_height =
1070 * scale[] allows to pass from rendered size (by text module) to video output size */
1071 pi_scale_width[SCALE_TEXT] = p_fmt->i_width * 1000 /
1072 p_spu->p_text->fmt_out.video.i_width;
1073 pi_scale_height[SCALE_TEXT]= p_fmt->i_height * 1000 /
1074 p_spu->p_text->fmt_out.video.i_height;
1078 /* Just set a value to avoid using invalid memory while looping over the array */
1079 pi_scale_width[SCALE_TEXT] =
1080 pi_scale_height[SCALE_TEXT]= 1000;
1084 * scale[] allows to pass from native (either video or original) size to output size */
1086 if( p_subpic->i_original_picture_height > 0 &&
1087 p_subpic->i_original_picture_width > 0 )
1089 pi_scale_width[SCALE_DEFAULT] = p_fmt->i_width * 1000 / p_subpic->i_original_picture_width;
1090 pi_scale_height[SCALE_DEFAULT] = p_fmt->i_height * 1000 / p_subpic->i_original_picture_height;
1094 pi_scale_width[ SCALE_DEFAULT ] = i_scale_width_orig;
1095 pi_scale_height[ SCALE_DEFAULT ] = i_scale_height_orig;
1098 for( k = 0; k < SCALE_SIZE ; k++ )
1100 /* Case of both width and height being specified has been dealt
1101 * with above by instead rendering to an output pane of the
1102 * explicit dimensions specified - we don't need to scale it.
1104 if( p_subpic->i_original_picture_height > 0 &&
1105 p_subpic->i_original_picture_width <= 0 )
1107 pi_scale_height[ k ] = pi_scale_height[ k ] * i_source_video_height /
1108 p_subpic->i_original_picture_height;
1109 pi_scale_width[ k ] = pi_scale_width[ k ] * i_source_video_height /
1110 p_subpic->i_original_picture_height;
1114 /* Set default subpicture aspect ratio */
1115 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
1117 if( p_region->fmt.i_aspect != 0 )
1119 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
1120 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
1124 p_region->fmt.i_sar_den = p_fmt->i_sar_den;
1125 p_region->fmt.i_sar_num = p_fmt->i_sar_num;
1129 /* Take care of the aspect ratio */
1130 if( ( p_region->fmt.i_sar_num * p_fmt->i_sar_den ) !=
1131 ( p_region->fmt.i_sar_den * p_fmt->i_sar_num ) )
1133 for( k = 0; k < SCALE_SIZE; k++ )
1135 pi_scale_width[k] = pi_scale_width[ k ] *
1136 (int64_t)p_region->fmt.i_sar_num * p_fmt->i_sar_den /
1137 p_region->fmt.i_sar_den / p_fmt->i_sar_num;
1139 pi_subpic_x[k] = p_subpic->i_x * pi_scale_width[ k ] / 1000;
1143 /* Load the scaling module when needed */
1144 if( !p_spu->p_scale )
1146 bool b_scale_used = false;
1148 for( k = 0; k < SCALE_SIZE; k++ )
1150 const int i_scale_w = pi_scale_width[k];
1151 const int i_scale_h = pi_scale_height[k];
1152 if( ( i_scale_w > 0 && i_scale_w != 1000 ) || ( i_scale_h > 0 && i_scale_h != 1000 ) )
1153 b_scale_used = true;
1157 SpuRenderCreateAndLoadScale( p_spu );
1160 for( ; p_region != NULL; p_region = p_region->p_next )
1161 SpuRenderRegion( p_spu, p_pic_dst, p_pic_src,
1162 p_subpic, p_region, i_scale_width_orig, i_scale_height_orig,
1163 pi_subpic_x, pi_scale_width, pi_scale_height,
1167 vlc_mutex_unlock( &p_spu->subpicture_lock );
1170 /*****************************************************************************
1171 * spu_SortSubpictures: find the subpictures to display
1172 *****************************************************************************
1173 * This function parses all subpictures and decides which ones need to be
1174 * displayed. This operation does not need lock, since only READY_SUBPICTURE
1175 * are handled. If no picture has been selected, display_date will depend on
1177 * We also check for ephemer DVD subpictures (subpictures that have
1178 * to be removed if a newer one is available), which makes it a lot
1179 * more difficult to guess if a subpicture has to be rendered or not.
1180 *****************************************************************************/
1181 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
1184 int i_index, i_channel;
1185 subpicture_t *p_subpic = NULL;
1186 subpicture_t *p_ephemer;
1187 mtime_t ephemer_date;
1189 /* Run subpicture filters */
1190 filter_chain_SubFilter( p_spu->p_chain, display_date );
1192 /* We get an easily parsable chained list of subpictures which
1193 * ends with NULL since p_subpic was initialized to NULL. */
1194 for( i_channel = 0; i_channel < p_spu->i_channel; i_channel++ )
1199 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1201 if( p_spu->p_subpicture[i_index].i_channel != i_channel ||
1202 p_spu->p_subpicture[i_index].i_status != READY_SUBPICTURE )
1207 display_date < p_spu->p_subpicture[i_index].i_start )
1209 /* Too early, come back next monday */
1213 if( p_spu->p_subpicture[i_index].i_start > ephemer_date )
1214 ephemer_date = p_spu->p_subpicture[i_index].i_start;
1216 if( display_date > p_spu->p_subpicture[i_index].i_stop &&
1217 ( !p_spu->p_subpicture[i_index].b_ephemer ||
1218 p_spu->p_subpicture[i_index].i_stop >
1219 p_spu->p_subpicture[i_index].i_start ) &&
1220 !( p_spu->p_subpicture[i_index].b_pausable &&
1223 /* Too late, destroy the subpic */
1224 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
1228 /* If this is an ephemer subpic, add it to our list */
1229 if( p_spu->p_subpicture[i_index].b_ephemer )
1231 p_spu->p_subpicture[i_index].p_next = p_ephemer;
1232 p_ephemer = &p_spu->p_subpicture[i_index];
1237 p_spu->p_subpicture[i_index].p_next = p_subpic;
1238 p_subpic = &p_spu->p_subpicture[i_index];
1241 /* If we found ephemer subpictures, check if they have to be
1242 * displayed or destroyed */
1243 while( p_ephemer != NULL )
1245 subpicture_t *p_tmp = p_ephemer;
1246 p_ephemer = p_ephemer->p_next;
1248 if( p_tmp->i_start < ephemer_date )
1250 /* Ephemer subpicture has lived too long */
1251 spu_DestroySubpicture( p_spu, p_tmp );
1255 /* Ephemer subpicture can still live a bit */
1256 p_tmp->p_next = p_subpic;
1265 /*****************************************************************************
1266 * SpuClearChannel: clear an spu channel
1267 *****************************************************************************
1268 * This function destroys the subpictures which belong to the spu channel
1269 * corresponding to i_channel_id.
1270 *****************************************************************************/
1271 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
1273 int i_subpic; /* subpicture index */
1274 subpicture_t *p_subpic = NULL; /* first free subpicture */
1277 vlc_mutex_lock( &p_spu->subpicture_lock );
1279 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1281 p_subpic = &p_spu->p_subpicture[i_subpic];
1282 if( p_subpic->i_status == FREE_SUBPICTURE
1283 || ( p_subpic->i_status != RESERVED_SUBPICTURE
1284 && p_subpic->i_status != READY_SUBPICTURE ) )
1289 if( p_subpic->i_channel == i_channel )
1291 while( p_subpic->p_region )
1293 subpicture_region_t *p_region = p_subpic->p_region;
1294 p_subpic->p_region = p_region->p_next;
1295 spu_DestroyRegion( p_spu, p_region );
1298 if( p_subpic->pf_destroy ) p_subpic->pf_destroy( p_subpic );
1299 p_subpic->i_status = FREE_SUBPICTURE;
1304 vlc_mutex_unlock( &p_spu->subpicture_lock );
1307 /*****************************************************************************
1308 * spu_ControlDefault: default methods for the subpicture unit control.
1309 *****************************************************************************/
1310 static int spu_vaControlDefault( spu_t *p_spu, int i_query, va_list args )
1316 case SPU_CHANNEL_REGISTER:
1317 pi = (int *)va_arg( args, int * );
1318 if( pi ) *pi = p_spu->i_channel++;
1321 case SPU_CHANNEL_CLEAR:
1322 i = (int)va_arg( args, int );
1323 SpuClearChannel( p_spu, i, false );
1327 msg_Dbg( p_spu, "control query not supported" );
1328 return VLC_EGENERIC;
1334 /*****************************************************************************
1335 * Object variables callbacks
1336 *****************************************************************************/
1338 /*****************************************************************************
1339 * UpdateSPU: update subpicture settings
1340 *****************************************************************************
1341 * This function is called from CropCallback and at initialization time, to
1342 * retrieve crop information from the input.
1343 *****************************************************************************/
1344 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1348 vlc_mutex_lock( &p_spu->subpicture_lock );
1350 p_spu->b_force_palette = false;
1351 p_spu->b_force_crop = false;
1353 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1355 vlc_mutex_unlock( &p_spu->subpicture_lock );
1359 p_spu->b_force_crop = true;
1360 var_Get( p_object, "x-start", &val );
1361 p_spu->i_crop_x = val.i_int;
1362 var_Get( p_object, "y-start", &val );
1363 p_spu->i_crop_y = val.i_int;
1364 var_Get( p_object, "x-end", &val );
1365 p_spu->i_crop_width = val.i_int - p_spu->i_crop_x;
1366 var_Get( p_object, "y-end", &val );
1367 p_spu->i_crop_height = val.i_int - p_spu->i_crop_y;
1369 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1371 memcpy( p_spu->palette, val.p_address, 16 );
1372 p_spu->b_force_palette = true;
1374 vlc_mutex_unlock( &p_spu->subpicture_lock );
1376 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1377 p_spu->i_crop_x, p_spu->i_crop_y,
1378 p_spu->i_crop_width, p_spu->i_crop_height,
1379 p_spu->b_force_palette );
1382 /*****************************************************************************
1383 * CropCallback: called when the highlight properties are changed
1384 *****************************************************************************
1385 * This callback is called from the input thread when we need cropping
1386 *****************************************************************************/
1387 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1388 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1390 (void)psz_var; (void)oldval; (void)newval;
1391 UpdateSPU( (spu_t *)p_data, p_object );
1395 /*****************************************************************************
1396 * Buffers allocation callbacks for the filters
1397 *****************************************************************************/
1398 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1400 filter_owner_sys_t *p_sys = p_filter->p_owner;
1401 subpicture_t *p_subpicture = spu_CreateSubpicture( p_sys->p_spu );
1402 if( p_subpicture ) p_subpicture->i_channel = p_sys->i_channel;
1403 return p_subpicture;
1406 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1408 filter_owner_sys_t *p_sys = p_filter->p_owner;
1409 spu_DestroySubpicture( p_sys->p_spu, p_subpic );
1412 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1415 subpicture_t *p_subpic = (subpicture_t *)malloc(sizeof(subpicture_t));
1416 if( !p_subpic ) return NULL;
1417 memset( p_subpic, 0, sizeof(subpicture_t) );
1418 p_subpic->b_absolute = true;
1420 p_subpic->pf_create_region = __spu_CreateRegion;
1421 p_subpic->pf_make_region = __spu_MakeRegion;
1422 p_subpic->pf_destroy_region = __spu_DestroyRegion;
1427 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1429 while( p_subpic->p_region )
1431 subpicture_region_t *p_region = p_subpic->p_region;
1432 p_subpic->p_region = p_region->p_next;
1433 p_subpic->pf_destroy_region( VLC_OBJECT(p_filter), p_region );
1439 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1441 picture_t *p_picture = malloc( sizeof(picture_t) );
1442 if( !p_picture ) return NULL;
1443 if( vout_AllocatePicture( p_filter, p_picture,
1444 p_filter->fmt_out.video.i_chroma,
1445 p_filter->fmt_out.video.i_width,
1446 p_filter->fmt_out.video.i_height,
1447 p_filter->fmt_out.video.i_aspect )
1454 p_picture->pf_release = RegionPictureRelease;
1459 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_pic )
1464 free( p_pic->p_data_orig );
1469 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1470 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1472 VLC_UNUSED(p_object); VLC_UNUSED(oldval);
1473 VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1475 spu_t *p_spu = (spu_t *)p_data;
1476 vlc_mutex_lock( &p_spu->subpicture_lock );
1477 filter_chain_Reset( p_spu->p_chain, NULL, NULL );
1478 spu_ParseChain( p_spu );
1479 vlc_mutex_unlock( &p_spu->subpicture_lock );
1483 static int sub_filter_allocation_init( filter_t *p_filter, void *p_data )
1485 spu_t *p_spu = (spu_t *)p_data;
1487 p_filter->pf_sub_buffer_new = sub_new_buffer;
1488 p_filter->pf_sub_buffer_del = sub_del_buffer;
1490 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1491 if( !p_sys ) return VLC_EGENERIC;
1493 p_filter->p_owner = p_sys;
1494 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1495 p_sys->p_spu = p_spu;
1500 static void sub_filter_allocation_clear( filter_t *p_filter )
1502 filter_owner_sys_t *p_sys = p_filter->p_owner;
1503 SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
1504 free( p_filter->p_owner );