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"
43 /*****************************************************************************
45 *****************************************************************************/
46 static void UpdateSPU ( spu_t *, vlc_object_t * );
47 static int CropCallback( vlc_object_t *, char const *,
48 vlc_value_t, vlc_value_t, void * );
50 static int spu_vaControlDefault( spu_t *, int, va_list );
52 static subpicture_t *sub_new_buffer( filter_t * );
53 static void sub_del_buffer( filter_t *, subpicture_t * );
54 static subpicture_t *spu_new_buffer( filter_t * );
55 static void spu_del_buffer( filter_t *, subpicture_t * );
56 static picture_t *spu_new_video_buffer( filter_t * );
57 static void spu_del_video_buffer( filter_t *, picture_t * );
59 static int spu_ParseChain( spu_t * );
60 static int SubFilterCallback( vlc_object_t *, char const *,
61 vlc_value_t, vlc_value_t, void * );
63 static int SubFilterAllocationInit( filter_t *, void * );
64 static void SubFilterAllocationClean( filter_t * );
65 struct filter_owner_sys_t
71 #define SCALE_UNIT (1000)
74 static void SpuRenderCreateAndLoadText( spu_t *p_spu );
75 static void SpuRenderCreateAndLoadScale( spu_t *p_spu );
76 static void FilterRelease( filter_t *p_filter );
79 * Creates the subpicture unit
81 * \param p_this the parent object which creates the subpicture unit
83 spu_t *__spu_Create( vlc_object_t *p_this )
86 spu_t *p_spu = vlc_custom_create( p_this, sizeof( spu_t ),
87 VLC_OBJECT_GENERIC, "subpicture" );
89 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
91 p_spu->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
94 p_spu->p_blend = NULL;
96 p_spu->p_scale = NULL;
97 p_spu->p_scale_yuvp = NULL;
98 p_spu->pf_control = spu_vaControlDefault;
100 /* Register the default subpicture channel */
101 p_spu->i_channel = 2;
103 vlc_mutex_init( &p_spu->subpicture_lock );
105 vlc_object_attach( p_spu, p_this );
107 p_spu->p_chain = filter_chain_New( p_spu, "sub filter", false,
108 SubFilterAllocationInit,
109 SubFilterAllocationClean,
112 /* Load text and scale module */
113 SpuRenderCreateAndLoadText( p_spu );
114 SpuRenderCreateAndLoadScale( p_spu );
120 * Initialise the subpicture unit
122 * \param p_spu the subpicture unit object
124 int spu_Init( spu_t *p_spu )
128 /* If the user requested a sub margin, we force the position. */
129 var_Create( p_spu, "sub-margin", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
130 var_Get( p_spu, "sub-margin", &val );
131 p_spu->i_margin = val.i_int;
133 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
134 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
136 spu_ParseChain( p_spu );
141 int spu_ParseChain( spu_t *p_spu )
143 char *psz_parser = var_GetString( p_spu, "sub-filter" );
144 if( filter_chain_AppendFromString( p_spu->p_chain, psz_parser ) < 0 )
155 * Destroy the subpicture unit
157 * \param p_this the parent object which destroys the subpicture unit
159 void spu_Destroy( spu_t *p_spu )
163 /* Destroy all remaining subpictures */
164 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
166 if( p_spu->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
168 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
173 FilterRelease( p_spu->p_blend );
176 FilterRelease( p_spu->p_text );
178 if( p_spu->p_scale_yuvp )
179 FilterRelease( p_spu->p_scale_yuvp );
182 FilterRelease( p_spu->p_scale );
184 filter_chain_Delete( p_spu->p_chain );
186 vlc_mutex_destroy( &p_spu->subpicture_lock );
187 vlc_object_release( p_spu );
191 * Attach/Detach the SPU from any input
193 * \param p_this the object in which to destroy the subpicture unit
194 * \param b_attach to select attach or detach
196 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
198 vlc_object_t *p_input;
200 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
201 if( !p_input ) return;
205 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
206 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
207 vlc_object_release( p_input );
211 /* Delete callback */
212 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
213 vlc_object_release( p_input );
219 static void RegionPictureRelease( picture_t *p_picture )
221 if( --p_picture->i_refcount > 0 )
224 assert( p_picture->i_refcount == 0 );
225 free( p_picture->p_q );
226 free( p_picture->p_data_orig );
227 free( p_picture->p_sys );
231 * Create a subpicture region
233 * \param p_this vlc_object_t
234 * \param p_fmt the format that this subpicture region should have
236 subpicture_region_t *__spu_CreateRegion( vlc_object_t *p_this,
237 video_format_t *p_fmt )
239 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
243 /* FIXME is that *really* wanted? */
244 if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
245 p_fmt->p_palette = calloc( 1, sizeof(video_palette_t) );
247 p_fmt->p_palette = NULL; /* XXX and that above all? */
249 p_region->fmt = *p_fmt;
250 p_region->i_alpha = 0xff;
251 p_region->p_next = NULL;
252 p_region->p_cache = NULL;
253 p_region->psz_text = NULL;
254 p_region->p_style = NULL;
256 if( p_fmt->i_chroma == VLC_FOURCC('T','E','X','T') )
259 vout_AllocatePicture( p_this, &p_region->picture, p_fmt->i_chroma,
260 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
262 if( !p_region->picture.i_planes )
264 free( p_fmt->p_palette );
269 p_region->picture.i_refcount = 1;
270 p_region->picture.pf_release = RegionPictureRelease;
276 * Destroy a subpicture region
278 * \param p_this vlc_object_t
279 * \param p_region the subpicture region to destroy
281 void __spu_DestroyRegion( vlc_object_t *p_this, subpicture_region_t *p_region )
286 picture_Release( &p_region->picture );
288 free( p_region->fmt.p_palette );
289 if( p_region->p_cache )
290 __spu_DestroyRegion( p_this, p_region->p_cache );
292 free( p_region->psz_text );
293 free( p_region->psz_html );
294 //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
299 * Display a subpicture
301 * Remove the reservation flag of a subpicture, which will cause it to be
303 * \param p_spu the subpicture unit object
304 * \param p_subpic the subpicture to display
306 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
308 /* Check if status is valid */
309 if( p_subpic->i_status != RESERVED_SUBPICTURE )
311 msg_Err( p_spu, "subpicture %p has invalid status #%d",
312 p_subpic, p_subpic->i_status );
315 /* Remove reservation flag */
316 p_subpic->i_status = READY_SUBPICTURE;
318 if( p_subpic->i_channel == DEFAULT_CHAN )
320 p_subpic->i_channel = 0xFFFF;
321 spu_Control( p_spu, SPU_CHANNEL_CLEAR, DEFAULT_CHAN );
322 p_subpic->i_channel = DEFAULT_CHAN;
327 * Allocate a subpicture in the spu heap.
329 * This function create a reserved subpicture in the spu heap.
330 * A null pointer is returned if the function fails. This method provides an
331 * already allocated zone of memory in the spu data fields. It needs locking
332 * since several pictures can be created by several producers threads.
333 * \param p_spu the subpicture unit in which to create the subpicture
334 * \return NULL on error, a reserved subpicture otherwise
336 subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
338 int i_subpic; /* subpicture index */
339 subpicture_t * p_subpic = NULL; /* first free subpicture */
342 vlc_mutex_lock( &p_spu->subpicture_lock );
345 * Look for an empty place
348 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
350 if( p_spu->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )
352 /* Subpicture is empty and ready for allocation */
353 p_subpic = &p_spu->p_subpicture[i_subpic];
354 p_spu->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
359 /* If no free subpicture could be found */
360 if( p_subpic == NULL )
362 msg_Err( p_spu, "subpicture heap is full" );
363 vlc_mutex_unlock( &p_spu->subpicture_lock );
367 /* Copy subpicture information, set some default values */
368 memset( p_subpic, 0, sizeof(subpicture_t) );
369 p_subpic->i_status = RESERVED_SUBPICTURE;
370 p_subpic->b_absolute = true;
371 p_subpic->b_fade = false;
372 p_subpic->b_subtitle = false;
373 p_subpic->i_alpha = 0xFF;
374 p_subpic->p_region = NULL;
375 p_subpic->pf_render = NULL;
376 p_subpic->pf_destroy = NULL;
377 p_subpic->p_sys = NULL;
378 vlc_mutex_unlock( &p_spu->subpicture_lock );
380 p_subpic->pf_create_region = __spu_CreateRegion;
381 p_subpic->pf_destroy_region = __spu_DestroyRegion;
387 * Remove a subpicture from the heap
389 * This function frees a previously reserved subpicture.
390 * It is meant to be used when the construction of a picture aborted.
391 * This function does not need locking since reserved subpictures are ignored
394 void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
397 vlc_mutex_lock( &p_spu->subpicture_lock );
399 /* There can be race conditions so we need to check the status */
400 if( p_subpic->i_status == FREE_SUBPICTURE )
402 vlc_mutex_unlock( &p_spu->subpicture_lock );
406 /* Check if status is valid */
407 if( ( p_subpic->i_status != RESERVED_SUBPICTURE )
408 && ( p_subpic->i_status != READY_SUBPICTURE ) )
410 msg_Err( p_spu, "subpicture %p has invalid status %d",
411 p_subpic, p_subpic->i_status );
414 while( p_subpic->p_region )
416 subpicture_region_t *p_region = p_subpic->p_region;
417 p_subpic->p_region = p_region->p_next;
418 spu_DestroyRegion( p_spu, p_region );
421 if( p_subpic->pf_destroy )
423 p_subpic->pf_destroy( p_subpic );
426 p_subpic->i_status = FREE_SUBPICTURE;
428 vlc_mutex_unlock( &p_spu->subpicture_lock );
431 static void FilterRelease( filter_t *p_filter )
433 if( p_filter->p_module )
434 module_Unneed( p_filter, p_filter->p_module );
436 vlc_object_detach( p_filter );
437 vlc_object_release( p_filter );
440 static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
444 assert( !p_spu->p_blend );
447 p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
448 VLC_OBJECT_GENERIC, "blend" );
452 es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
454 es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
455 p_blend->fmt_out.video.i_x_offset = 0;
456 p_blend->fmt_out.video.i_y_offset = 0;
457 p_blend->fmt_out.video.i_chroma = i_chroma;
458 p_blend->fmt_out.video.i_aspect = i_aspect;
460 /* The blend module will be loaded when needed with the real
462 p_blend->p_module = NULL;
465 vlc_object_attach( p_blend, p_spu );
467 static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height, const video_format_t *p_in_fmt )
469 filter_t *p_blend = p_spu->p_blend;
474 if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
476 /* The chroma is not the same, we need to reload the blend module
477 * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
478 module_Unneed( p_blend, p_blend->p_module );
479 p_blend->p_module = NULL;
483 p_blend->fmt_in.video = *p_in_fmt;
486 p_blend->fmt_out.video.i_width =
487 p_blend->fmt_out.video.i_visible_width = i_out_width;
488 p_blend->fmt_out.video.i_height =
489 p_blend->fmt_out.video.i_visible_height = i_out_height;
492 if( !p_blend->p_module )
493 p_blend->p_module = module_Need( p_blend, "video blending", 0, 0 );
495 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
499 assert( !p_spu->p_text );
502 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
503 VLC_OBJECT_GENERIC, "spu text" );
507 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
509 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
510 p_text->fmt_out.video.i_width =
511 p_text->fmt_out.video.i_visible_width = 32;
512 p_text->fmt_out.video.i_height =
513 p_text->fmt_out.video.i_visible_height = 32;
515 p_text->pf_sub_buffer_new = spu_new_buffer;
516 p_text->pf_sub_buffer_del = spu_del_buffer;
518 vlc_object_attach( p_text, p_spu );
520 /* FIXME TOCHECK shouldn't module_Need( , , psz_modulename, false ) do the
521 * same than these 2 calls ? */
522 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
523 if( psz_modulename && *psz_modulename )
525 p_text->p_module = module_Need( p_text, "text renderer",
526 psz_modulename, true );
528 free( psz_modulename );
530 if( !p_text->p_module )
531 p_text->p_module = module_Need( p_text, "text renderer", NULL, false );
534 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj, vlc_fourcc_t i_chroma )
538 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
539 VLC_OBJECT_GENERIC, "scale" );
543 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
544 p_scale->fmt_in.video.i_chroma = i_chroma;
545 p_scale->fmt_in.video.i_width =
546 p_scale->fmt_in.video.i_height = 32;
548 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
549 p_scale->fmt_out.video.i_chroma = i_chroma;
550 p_scale->fmt_out.video.i_width =
551 p_scale->fmt_out.video.i_height = 16;
553 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
554 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
556 vlc_object_attach( p_scale, p_obj );
557 p_scale->p_module = module_Need( p_scale, "video filter2", 0, 0 );
561 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
563 /* FIXME: We'll also be using it for YUVA and RGBA blending ... */
565 assert( !p_spu->p_scale );
566 assert( !p_spu->p_scale_yuvp );
567 p_spu->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','A') );
568 p_spu->p_scale_yuvp = p_spu->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','P') );
571 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
572 subpicture_t *p_subpic, subpicture_region_t *p_region, int i_min_scale_ratio )
574 assert( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') );
576 if( !p_spu->p_text || !p_spu->p_text->p_module )
579 /* Setup 3 variables which can be used to render
580 * time-dependent text (and effects). The first indicates
581 * the total amount of time the text will be on screen,
582 * the second the amount of time it has already been on
583 * screen (can be a negative value as text is layed out
584 * before it is rendered) and the third is a feedback
585 * variable from the renderer - if the renderer sets it
586 * then this particular text is time-dependent, eg. the
587 * visual progress bar inside the text in karaoke and the
588 * text needs to be rendered multiple times in order for
589 * the effect to work - we therefore need to return the
590 * region to its original state at the end of the loop,
591 * instead of leaving it in YUVA or YUVP.
592 * Any renderer which is unaware of how to render
593 * time-dependent text can happily ignore the variables
594 * and render the text the same as usual - it should at
595 * least show up on screen, but the effect won't change
596 * the text over time.
599 /* FIXME why these variables are recreated every time and not
600 * when text renderer module was created ? */
601 var_Create( p_spu->p_text, "spu-duration", VLC_VAR_TIME );
602 var_Create( p_spu->p_text, "spu-elapsed", VLC_VAR_TIME );
603 var_Create( p_spu->p_text, "text-rerender", VLC_VAR_BOOL );
604 var_Create( p_spu->p_text, "scale", VLC_VAR_INTEGER );
606 var_SetTime( p_spu->p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
607 var_SetTime( p_spu->p_text, "spu-elapsed", mdate() - p_subpic->i_start );
608 var_SetBool( p_spu->p_text, "text-rerender", false );
609 var_SetInteger( p_spu->p_text, "scale", i_min_scale_ratio );
611 if( p_spu->p_text->pf_render_html && p_region->psz_html )
613 p_spu->p_text->pf_render_html( p_spu->p_text,
614 p_region, p_region );
616 else if( p_spu->p_text->pf_render_text )
618 p_spu->p_text->pf_render_text( p_spu->p_text,
619 p_region, p_region );
621 *pb_rerender_text = var_GetBool( p_spu->p_text, "text-rerender" );
623 var_Destroy( p_spu->p_text, "spu-duration" );
624 var_Destroy( p_spu->p_text, "spu-elapsed" );
625 var_Destroy( p_spu->p_text, "text-rerender" );
626 var_Destroy( p_spu->p_text, "scale" );
629 p_region->i_align |= SUBPICTURE_RENDERED;
633 * A few scale functions helpers.
641 static spu_scale_t spu_scale_create( int w, int h )
643 spu_scale_t s = { .w = w, .h = h };
650 static spu_scale_t spu_scale_unit(void )
652 return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
654 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
656 return spu_scale_create( wn * SCALE_UNIT / wd,
657 hn * SCALE_UNIT / hd );
659 static int spu_scale_w( int v, const spu_scale_t s )
661 return v * s.w / SCALE_UNIT;
663 static int spu_scale_h( int v, const spu_scale_t s )
665 return v * s.h / SCALE_UNIT;
667 static int spu_invscale_w( int v, const spu_scale_t s )
669 return v * SCALE_UNIT / s.w;
671 static int spu_invscale_h( int v, const spu_scale_t s )
673 return v * SCALE_UNIT / s.h;
677 * A few area functions helpers
690 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
692 spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
695 static spu_area_t spu_area_scaled( spu_area_t a )
697 if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
700 a.i_x = spu_scale_w( a.i_x, a.scale );
701 a.i_y = spu_scale_h( a.i_y, a.scale );
703 a.i_width = spu_scale_w( a.i_width, a.scale );
704 a.i_height = spu_scale_h( a.i_height, a.scale );
706 a.scale = spu_scale_unit();
709 static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
711 if( a.scale.w == s.w && a.scale.h == s.h )
714 a = spu_area_scaled( a );
716 a.i_x = spu_invscale_w( a.i_x, s );
717 a.i_y = spu_invscale_h( a.i_y, s );
719 a.i_width = spu_invscale_w( a.i_width, s );
720 a.i_height = spu_invscale_h( a.i_height, s );
725 static bool spu_area_overlap( spu_area_t a, spu_area_t b )
730 a = spu_area_scaled( a );
731 b = spu_area_scaled( b );
733 return __MAX( a.i_x-i_dx, b.i_x ) < __MIN( a.i_x+a.i_width +i_dx, b.i_x+b.i_width ) &&
734 __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
738 * Avoid area overlapping
740 static void SpuAreaFixOverlap( spu_area_t *p_dst,
741 const spu_area_t *p_master,
742 const spu_area_t *p_sub, int i_sub, int i_align )
744 spu_area_t a = spu_area_scaled( *p_dst );
745 bool b_moved = false;
748 assert( p_master->i_x == 0 && p_master->i_y == 0 );
751 * XXX It is not fast O(n^2) but we should not have a lot of region */
755 for( int i = 0; i < i_sub; i++ )
757 spu_area_t sub = spu_area_scaled( p_sub[i] );
759 if( !spu_area_overlap( a, sub ) )
762 if( i_align & SUBPICTURE_ALIGN_TOP )
765 int i_y = sub.i_y + sub.i_height;
766 if( i_y + a.i_height > p_master->i_height )
771 else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
774 int i_y = sub.i_y - a.i_height;
782 /* TODO what to do in this case? */
783 //fprintf( stderr, "Overlap with unsupported alignment\n" );
793 *p_dst = spu_area_unscaled( a, p_dst->scale );
800 static void SpuRegionPlace( int *pi_x, int *pi_y,
801 const subpicture_t *p_subpic,
802 const subpicture_region_t *p_region,
805 const int i_delta_x = p_region->i_x;
806 const int i_delta_y = p_region->i_y;
809 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
810 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
814 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
816 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
820 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
823 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
827 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
829 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
833 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
836 if( p_subpic->b_absolute )
842 /* Margin shifts all subpictures */
843 if( i_margin_y != 0 )
846 /* Clamp offset to not go out of the screen (when possible) */
847 const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
853 const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
864 * This function computes the current alpha value for a given region.
866 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
868 /* Compute alpha blend value */
869 int i_fade_alpha = 255;
870 if( p_subpic->b_fade )
872 mtime_t i_fade_start = ( p_subpic->i_stop +
873 p_subpic->i_start ) / 2;
874 mtime_t i_now = mdate();
876 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
878 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
879 ( p_subpic->i_stop - i_fade_start );
882 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
886 * It will render the provided region onto p_pic_dst.
889 static void SpuRenderRegion( spu_t *p_spu,
890 picture_t *p_pic_dst, spu_area_t *p_area,
891 subpicture_t *p_subpic, subpicture_region_t *p_region,
892 const spu_scale_t scale_size,
893 const video_format_t *p_fmt,
894 const spu_area_t *p_subtitle_area, int i_subtitle_area )
896 video_format_t fmt_original = p_region->fmt;
897 bool b_rerender_text = false;
898 bool b_restore_format = false;
903 vlc_assert_locked( &p_spu->subpicture_lock );
905 /* Invalidate area by default */
906 *p_area = spu_area_create( 0,0, 0,0, scale_size );
908 /* Render text region */
909 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
911 const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
912 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, i_min_scale_ratio );
913 b_restore_format = b_rerender_text;
915 /* Check if the rendering has failed ... */
916 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
920 /* Force palette if requested
921 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
922 * instead of only the right one (being the dvd spu).
924 const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC('Y','U','V','P');
925 const bool b_force_palette = b_using_palette && p_spu->b_force_palette;
926 const bool b_force_crop = b_force_palette && p_spu->b_force_crop;
929 /* Compute the margin which is expressed in destination pixel unit
930 * The margin is applied only to subtitle and when no forced crop is
931 * requested (dvd menu) */
933 if( !b_force_crop && p_subpic->b_subtitle )
934 i_margin_y = spu_invscale_h( p_spu->i_margin, scale_size );
937 * We compute the position in the rendered size */
938 SpuRegionPlace( &i_x_offset, &i_y_offset,
939 p_subpic, p_region, i_margin_y );
941 /* Save this position for subtitle overlap support
942 * it is really important that there are given without scale_size applied */
943 *p_area = spu_area_create( i_x_offset, i_y_offset,
944 p_region->fmt.i_width, p_region->fmt.i_height,
947 /* Handle overlapping subtitles when possible */
948 if( p_subpic->b_subtitle && !p_subpic->b_absolute )
950 spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height, spu_scale_unit() );
952 SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area, p_region->i_align );
955 /* Fix the position for the current scale_size */
956 i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
957 i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
959 if( b_force_palette )
961 /* It looks so wrong I won't comment
962 * p_palette->palette is [256][4] with a int i_entries
963 * p_spu->palette is [4][4]
965 p_region->fmt.p_palette->i_entries = 4;
966 memcpy( p_region->fmt.p_palette->palette, p_spu->palette, 4*sizeof(uint32_t) );
969 if( b_using_palette )
970 p_scale = p_spu->p_scale_yuvp;
972 p_scale = p_spu->p_scale;
974 /* Scale from rendered size to destination size */
976 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_force_palette ) )
978 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
979 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
981 /* TODO when b_using_palette is true, we should first convert it to YUVA to allow
982 * a proper rescaling */
984 /* Destroy if cache is unusable */
985 if( p_region->p_cache )
987 if( p_region->p_cache->fmt.i_width != i_dst_width ||
988 p_region->p_cache->fmt.i_height != i_dst_height ||
991 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
993 p_region->p_cache = NULL;
997 /* Scale if needed into cache */
998 if( !p_region->p_cache )
1002 p_scale->fmt_in.video = p_region->fmt;
1003 p_scale->fmt_out.video = p_region->fmt;
1005 if( p_scale->fmt_out.video.p_palette )
1006 *p_scale->fmt_out.video.p_palette =
1007 *p_region->fmt.p_palette;
1009 p_scale->fmt_out.video.i_width = i_dst_width;
1010 p_scale->fmt_out.video.i_height = i_dst_height;
1012 p_scale->fmt_out.video.i_visible_width =
1013 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
1014 p_scale->fmt_out.video.i_visible_height =
1015 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
1018 p_subpic->pf_create_region( VLC_OBJECT(p_spu),
1019 &p_scale->fmt_out.video );
1022 if( p_scale->p_module )
1024 picture_Yield( &p_region->picture );
1025 p_pic = p_scale->pf_video_filter( p_scale, &p_region->picture );
1029 picture_Copy( &p_region->p_cache->picture, p_pic );
1030 picture_Release( p_pic );
1032 p_region->p_cache->fmt = p_scale->fmt_out.video;
1033 /* i_x/i_y of cached region should NOT be used. I set them to
1034 * an invalid value to catch it (assert) */
1035 p_region->p_cache->i_x = INT_MAX;
1036 p_region->p_cache->i_y = INT_MAX;
1037 p_region->p_cache->i_align = p_region->i_align;
1038 p_region->p_cache->i_alpha = p_region->i_alpha;
1042 msg_Err( p_spu, "scaling failed (module not loaded)" );
1043 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
1044 p_region->p_cache );
1045 p_region->p_cache = NULL;
1049 /* And use the scaled picture */
1050 if( p_region->p_cache )
1052 p_region = p_region->p_cache;
1053 fmt_original = p_region->fmt;
1057 /* Force cropping if requested */
1060 video_format_t *p_fmt = &p_region->fmt;
1061 int i_crop_x = spu_scale_w( p_spu->i_crop_x, scale_size );
1062 int i_crop_y = spu_scale_h( p_spu->i_crop_y, scale_size );
1063 int i_crop_width = spu_scale_w( p_spu->i_crop_width, scale_size );
1064 int i_crop_height= spu_scale_h( p_spu->i_crop_height,scale_size );
1066 /* Find the intersection */
1067 if( i_crop_x + i_crop_width <= i_x_offset ||
1068 i_x_offset + (int)p_fmt->i_visible_width < i_crop_x ||
1069 i_crop_y + i_crop_height <= i_y_offset ||
1070 i_y_offset + (int)p_fmt->i_visible_height < i_crop_y )
1072 /* No intersection */
1073 p_fmt->i_visible_width = p_fmt->i_visible_height = 0;
1077 int i_x, i_y, i_x_end, i_y_end;
1078 i_x = __MAX( i_crop_x, i_x_offset );
1079 i_y = __MAX( i_crop_y, i_y_offset );
1080 i_x_end = __MIN( i_crop_x + i_crop_width,
1081 i_x_offset + (int)p_fmt->i_visible_width );
1082 i_y_end = __MIN( i_crop_y + i_crop_height,
1083 i_y_offset + (int)p_fmt->i_visible_height );
1085 p_fmt->i_x_offset = i_x - i_x_offset;
1086 p_fmt->i_y_offset = i_y - i_y_offset;
1087 p_fmt->i_visible_width = i_x_end - i_x;
1088 p_fmt->i_visible_height = i_y_end - i_y;
1090 i_x_offset = __MAX( i_x, 0 );
1091 i_y_offset = __MAX( i_y, 0 );
1093 b_restore_format = true;
1096 /* Update the blender */
1097 SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, &p_region->fmt );
1099 if( p_spu->p_blend->p_module )
1101 const int i_alpha = SpuRegionAlpha( p_subpic, p_region );
1103 p_spu->p_blend->pf_video_blend( p_spu->p_blend, p_pic_dst,
1104 &p_region->picture, i_x_offset, i_y_offset, i_alpha );
1108 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
1109 (char *)&p_spu->p_blend->fmt_out.video.i_chroma,
1110 (char *)&p_spu->p_blend->fmt_out.video.i_chroma );
1114 if( b_rerender_text )
1116 /* Some forms of subtitles need to be re-rendered more than
1117 * once, eg. karaoke. We therefore restore the region to its
1118 * pre-rendered state, so the next time through everything is
1121 p_region->picture.pf_release( &p_region->picture );
1122 memset( &p_region->picture, 0, sizeof( picture_t ) );
1123 p_region->i_align &= ~SUBPICTURE_RENDERED;
1125 if( b_restore_format )
1126 p_region->fmt = fmt_original;
1130 * This function renders all sub picture units in the list.
1132 void spu_RenderSubpictures( spu_t *p_spu,
1133 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
1134 subpicture_t *p_subpic_list,
1135 const video_format_t *p_fmt_src )
1137 const int i_source_video_width = p_fmt_src->i_width;
1138 const int i_source_video_height = p_fmt_src->i_height;
1139 const mtime_t i_current_date = mdate();
1141 unsigned int i_subtitle_region_count;
1142 spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
1143 spu_area_t *p_subtitle_area;
1144 int i_subtitle_area;
1146 subpicture_t *p_subpic;
1151 vlc_mutex_lock( &p_spu->subpicture_lock );
1153 /* Be sure we have at least 1 picture to process */
1154 if( !p_subpic_list || p_subpic_list->i_status == FREE_SUBPICTURE )
1156 vlc_mutex_unlock( &p_spu->subpicture_lock );
1161 i_subtitle_region_count = 0;
1162 for( p_subpic = p_subpic_list;
1163 p_subpic != NULL && p_subpic->i_status != FREE_SUBPICTURE; /* Check again status (as we where unlocked) */
1164 p_subpic = p_subpic->p_next )
1167 if( p_subpic->pf_pre_render )
1168 p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
1170 if( p_subpic->pf_update_regions )
1172 video_format_t fmt_org = *p_fmt_dst;
1174 fmt_org.i_visible_width = i_source_video_width;
1176 fmt_org.i_visible_height = i_source_video_height;
1178 p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org, i_current_date );
1182 if( p_subpic->b_subtitle )
1184 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
1185 i_subtitle_region_count++;
1189 /* Allocate area array for subtitle overlap */
1190 i_subtitle_area = 0;
1191 p_subtitle_area = p_subtitle_area_buffer;
1192 if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
1193 p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
1195 /* Create the blending module */
1196 if( !p_spu->p_blend )
1197 SpuRenderCreateBlend( p_spu, p_fmt_dst->i_chroma, p_fmt_dst->i_aspect );
1200 /* Process all subpictures and regions
1202 * 1. all absolute pictures
1203 * 2. not yet absolute subtitle pictures
1204 * The order is important to correctly move the non absolute picture.
1206 for( i_pass = 0, p_subpic = p_subpic_list; ; p_subpic = p_subpic->p_next )
1208 subpicture_region_t *p_region;
1210 if( !p_subpic || p_subpic->i_status == FREE_SUBPICTURE )
1215 p_subpic = p_subpic_list;
1216 assert( p_subpic && p_subpic->i_status != FREE_SUBPICTURE );
1219 if( ( i_pass == 0 && !p_subpic->b_absolute ) ||
1220 ( i_pass == 1 && p_subpic->b_absolute ) )
1223 if( !p_subpic->p_region )
1226 /* FIXME when possible use a better rendering size than source size
1227 * (max of display size and source size for example) FIXME */
1228 int i_render_width = p_subpic->i_original_picture_width;
1229 int i_render_height = p_subpic->i_original_picture_height;
1230 if( !i_render_width || !i_render_height )
1232 if( i_render_width != 0 || i_render_height != 0 )
1233 msg_Err( p_spu, "unsupported original picture size %dx%d",
1234 i_render_width, i_render_height );
1236 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
1237 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
1242 p_spu->p_text->fmt_out.video.i_width =
1243 p_spu->p_text->fmt_out.video.i_visible_width = i_render_width;
1245 p_spu->p_text->fmt_out.video.i_height =
1246 p_spu->p_text->fmt_out.video.i_visible_height = i_render_height;
1249 /* Compute scaling from picture to source size */
1250 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
1251 i_source_video_height, i_render_height );
1253 /* Update scaling from source size to display size(p_fmt_dst) */
1254 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
1255 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
1257 /* Set default subpicture aspect ratio
1258 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
1260 p_region = p_subpic->p_region;
1261 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
1263 if( p_region->fmt.i_aspect != 0 )
1265 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
1266 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
1270 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
1271 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
1275 /* Take care of the aspect ratio */
1276 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
1277 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
1279 /* FIXME FIXME what about region->i_x/i_y ? */
1281 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
1282 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
1285 /* Render all regions
1286 * We always transform non absolute subtitle into absolute one on the
1287 * first rendering to allow good subtitle overlap support.
1289 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
1293 /* Check scale validity */
1294 if( scale.w <= 0 || scale.h <= 0 )
1298 SpuRenderRegion( p_spu, p_pic_dst, &area,
1299 p_subpic, p_region, scale, p_fmt_dst,
1300 p_subtitle_area, i_subtitle_area );
1302 if( p_subpic->b_subtitle )
1304 area = spu_area_unscaled( area, scale );
1305 if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
1307 p_region->i_x = area.i_x;
1308 p_region->i_y = area.i_y;
1310 if( p_subtitle_area )
1311 p_subtitle_area[i_subtitle_area++] = area;
1314 if( p_subpic->b_subtitle )
1315 p_subpic->b_absolute = true;
1319 if( p_subtitle_area != p_subtitle_area_buffer )
1320 free( p_subtitle_area );
1322 vlc_mutex_unlock( &p_spu->subpicture_lock );
1325 /*****************************************************************************
1326 * spu_SortSubpictures: find the subpictures to display
1327 *****************************************************************************
1328 * This function parses all subpictures and decides which ones need to be
1329 * displayed. This operation does not need lock, since only READY_SUBPICTURE
1330 * are handled. If no picture has been selected, display_date will depend on
1332 * We also check for ephemer DVD subpictures (subpictures that have
1333 * to be removed if a newer one is available), which makes it a lot
1334 * more difficult to guess if a subpicture has to be rendered or not.
1335 *****************************************************************************/
1336 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
1337 bool b_paused, bool b_subtitle_only )
1340 subpicture_t *p_subpic = NULL;
1342 /* Run subpicture filters */
1343 filter_chain_SubFilter( p_spu->p_chain, display_date );
1345 /* We get an easily parsable chained list of subpictures which
1346 * ends with NULL since p_subpic was initialized to NULL. */
1347 for( i_channel = 0; i_channel < p_spu->i_channel; i_channel++ )
1349 subpicture_t *p_ephemer = NULL;
1350 mtime_t ephemer_date = 0;
1353 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1355 subpicture_t *p_current = &p_spu->p_subpicture[i_index];
1357 if( p_current->i_channel != i_channel ||
1358 p_current->i_status != READY_SUBPICTURE ||
1359 ( b_subtitle_only && !p_current->b_subtitle ) )
1364 display_date < p_current->i_start )
1366 /* Too early, come back next monday */
1370 if( p_current->i_start > ephemer_date )
1371 ephemer_date = p_current->i_start;
1373 if( display_date > p_current->i_stop &&
1374 ( !p_current->b_ephemer || p_current->i_stop > p_current->i_start ) &&
1375 !( p_current->b_subtitle && b_paused ) ) /* XXX Assume that subtitle are pausable */
1377 /* Too late, destroy the subpic */
1378 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
1382 /* If this is an ephemer subpic, add it to our list */
1383 if( p_current->b_ephemer )
1385 p_current->p_next = p_ephemer;
1386 p_ephemer = p_current;
1391 p_current->p_next = p_subpic;
1392 p_subpic = p_current;
1395 /* If we found ephemer subpictures, check if they have to be
1396 * displayed or destroyed */
1397 while( p_ephemer != NULL )
1399 subpicture_t *p_tmp = p_ephemer;
1400 p_ephemer = p_ephemer->p_next;
1402 if( p_tmp->i_start < ephemer_date )
1404 /* Ephemer subpicture has lived too long */
1405 spu_DestroySubpicture( p_spu, p_tmp );
1409 /* Ephemer subpicture can still live a bit */
1410 p_tmp->p_next = p_subpic;
1419 /*****************************************************************************
1420 * SpuClearChannel: clear an spu channel
1421 *****************************************************************************
1422 * This function destroys the subpictures which belong to the spu channel
1423 * corresponding to i_channel_id.
1424 *****************************************************************************/
1425 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
1427 int i_subpic; /* subpicture index */
1428 subpicture_t *p_subpic = NULL; /* first free subpicture */
1431 vlc_mutex_lock( &p_spu->subpicture_lock );
1433 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1435 p_subpic = &p_spu->p_subpicture[i_subpic];
1436 if( p_subpic->i_status == FREE_SUBPICTURE
1437 || ( p_subpic->i_status != RESERVED_SUBPICTURE
1438 && p_subpic->i_status != READY_SUBPICTURE ) )
1443 if( p_subpic->i_channel == i_channel )
1445 while( p_subpic->p_region )
1447 subpicture_region_t *p_region = p_subpic->p_region;
1448 p_subpic->p_region = p_region->p_next;
1449 spu_DestroyRegion( p_spu, p_region );
1452 if( p_subpic->pf_destroy ) p_subpic->pf_destroy( p_subpic );
1453 p_subpic->i_status = FREE_SUBPICTURE;
1458 vlc_mutex_unlock( &p_spu->subpicture_lock );
1461 /*****************************************************************************
1462 * spu_ControlDefault: default methods for the subpicture unit control.
1463 *****************************************************************************/
1464 static int spu_vaControlDefault( spu_t *p_spu, int i_query, va_list args )
1470 case SPU_CHANNEL_REGISTER:
1471 pi = (int *)va_arg( args, int * );
1472 vlc_mutex_lock( &p_spu->subpicture_lock );
1474 *pi = p_spu->i_channel++;
1475 vlc_mutex_unlock( &p_spu->subpicture_lock );
1478 case SPU_CHANNEL_CLEAR:
1479 i = (int)va_arg( args, int );
1480 SpuClearChannel( p_spu, i, false );
1484 msg_Dbg( p_spu, "control query not supported" );
1485 return VLC_EGENERIC;
1491 /*****************************************************************************
1492 * Object variables callbacks
1493 *****************************************************************************/
1495 /*****************************************************************************
1496 * UpdateSPU: update subpicture settings
1497 *****************************************************************************
1498 * This function is called from CropCallback and at initialization time, to
1499 * retrieve crop information from the input.
1500 *****************************************************************************/
1501 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1505 vlc_mutex_lock( &p_spu->subpicture_lock );
1507 p_spu->b_force_palette = false;
1508 p_spu->b_force_crop = false;
1510 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1512 vlc_mutex_unlock( &p_spu->subpicture_lock );
1516 p_spu->b_force_crop = true;
1517 var_Get( p_object, "x-start", &val );
1518 p_spu->i_crop_x = val.i_int;
1519 var_Get( p_object, "y-start", &val );
1520 p_spu->i_crop_y = val.i_int;
1521 var_Get( p_object, "x-end", &val );
1522 p_spu->i_crop_width = val.i_int - p_spu->i_crop_x;
1523 var_Get( p_object, "y-end", &val );
1524 p_spu->i_crop_height = val.i_int - p_spu->i_crop_y;
1526 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1528 memcpy( p_spu->palette, val.p_address, 16 );
1529 p_spu->b_force_palette = true;
1531 vlc_mutex_unlock( &p_spu->subpicture_lock );
1533 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1534 p_spu->i_crop_x, p_spu->i_crop_y,
1535 p_spu->i_crop_width, p_spu->i_crop_height,
1536 p_spu->b_force_palette );
1539 /*****************************************************************************
1540 * CropCallback: called when the highlight properties are changed
1541 *****************************************************************************
1542 * This callback is called from the input thread when we need cropping
1543 *****************************************************************************/
1544 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1545 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1547 (void)psz_var; (void)oldval; (void)newval;
1548 UpdateSPU( (spu_t *)p_data, p_object );
1552 /*****************************************************************************
1553 * Buffers allocation callbacks for the filters
1554 *****************************************************************************/
1555 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1557 filter_owner_sys_t *p_sys = p_filter->p_owner;
1558 subpicture_t *p_subpicture = spu_CreateSubpicture( p_sys->p_spu );
1559 if( p_subpicture ) p_subpicture->i_channel = p_sys->i_channel;
1560 return p_subpicture;
1563 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1565 filter_owner_sys_t *p_sys = p_filter->p_owner;
1566 spu_DestroySubpicture( p_sys->p_spu, p_subpic );
1569 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1571 subpicture_t *p_subpic = calloc( 1, sizeof(subpicture_t) );
1575 p_subpic->b_absolute = true;
1576 p_subpic->i_alpha = 0xFF;
1578 p_subpic->pf_create_region = __spu_CreateRegion;
1579 p_subpic->pf_destroy_region = __spu_DestroyRegion;
1581 VLC_UNUSED(p_filter);
1585 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1587 while( p_subpic->p_region )
1589 subpicture_region_t *p_region = p_subpic->p_region;
1590 p_subpic->p_region = p_region->p_next;
1591 p_subpic->pf_destroy_region( VLC_OBJECT(p_filter), p_region );
1597 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1599 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1601 VLC_UNUSED(p_filter);
1602 return picture_New( p_fmt->i_chroma,
1603 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
1606 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1608 VLC_UNUSED(p_filter);
1609 picture_Release( p_picture );
1612 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1613 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1615 spu_t *p_spu = p_data;
1617 VLC_UNUSED(p_object); VLC_UNUSED(oldval);
1618 VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1620 vlc_mutex_lock( &p_spu->subpicture_lock );
1621 filter_chain_Reset( p_spu->p_chain, NULL, NULL );
1622 spu_ParseChain( p_spu );
1623 vlc_mutex_unlock( &p_spu->subpicture_lock );
1627 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1629 spu_t *p_spu = p_data;
1631 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1633 return VLC_EGENERIC;
1635 p_filter->pf_sub_buffer_new = sub_new_buffer;
1636 p_filter->pf_sub_buffer_del = sub_del_buffer;
1638 p_filter->p_owner = p_sys;
1639 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1640 p_sys->p_spu = p_spu;
1645 static void SubFilterAllocationClean( filter_t *p_filter )
1647 filter_owner_sys_t *p_sys = p_filter->p_owner;
1649 SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
1650 free( p_filter->p_owner );