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"
39 #include "vout_internal.h"
40 #include <vlc_image.h>
45 /*****************************************************************************
47 *****************************************************************************/
49 /* Number of simultaneous subpictures */
50 #define VOUT_MAX_SUBPICTURES (__MAX(VOUT_MAX_PICTURES, SPU_MAX_PREPARE_TIME/5000))
55 subpicture_t *p_subpicture;
61 spu_heap_entry_t p_entry[VOUT_MAX_SUBPICTURES];
65 static void SpuHeapInit( spu_heap_t * );
66 static int SpuHeapPush( spu_heap_t *, subpicture_t * );
67 static void SpuHeapDeleteAt( spu_heap_t *, int i_index );
68 static int SpuHeapDeleteSubpicture( spu_heap_t *, subpicture_t * );
69 static void SpuHeapClean( spu_heap_t *p_heap );
73 vlc_mutex_t lock; /* lock to protect all followings fields */
77 int i_channel; /**< number of subpicture channels registered */
78 filter_t *p_blend; /**< alpha blending module */
79 filter_t *p_text; /**< text renderer module */
80 filter_t *p_scale_yuvp; /**< scaling module for YUVP */
81 filter_t *p_scale; /**< scaling module (all but YUVP) */
82 bool b_force_crop; /**< force cropping of subpicture */
83 int i_crop_x, i_crop_y, i_crop_width, i_crop_height; /**< cropping */
85 int i_margin; /**< force position of a subpicture */
86 bool b_force_palette; /**< force palette of subpicture */
87 uint8_t palette[4][4]; /**< forced palette */
89 /* Subpiture filters */
90 char *psz_chain_update;
91 filter_chain_t *p_chain;
94 mtime_t i_last_sort_date;
98 struct subpicture_region_private_t
101 picture_t *p_picture;
103 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t * );
104 static void SpuRegionPrivateDelete( subpicture_region_private_t * );
112 static spu_scale_t spu_scale_create( int w, int h );
113 static spu_scale_t spu_scale_unit(void );
114 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd );
115 static int spu_scale_w( int v, const spu_scale_t s );
116 static int spu_scale_h( int v, const spu_scale_t s );
117 static int spu_invscale_w( int v, const spu_scale_t s );
118 static int spu_invscale_h( int v, const spu_scale_t s );
130 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t );
131 static spu_area_t spu_area_scaled( spu_area_t );
132 static spu_area_t spu_area_unscaled( spu_area_t, spu_scale_t );
133 static bool spu_area_overlap( spu_area_t, spu_area_t );
136 /* Subpicture rendered flag
137 * FIXME ? it could be moved to private ? */
138 #define SUBPICTURE_RENDERED (0x1000)
139 #if SUBPICTURE_RENDERED < SUBPICTURE_ALIGN_MASK
140 # error SUBPICTURE_RENDERED too low
143 #define SCALE_UNIT (1000)
145 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
146 static int SubpictureCmp( const void *s0, const void *s1 );
148 static void SpuRenderRegion( spu_t *,
149 picture_t *p_pic_dst, spu_area_t *,
150 subpicture_t *, subpicture_region_t *,
151 const spu_scale_t scale_size,
152 const video_format_t *p_fmt,
153 const spu_area_t *p_subtitle_area, int i_subtitle_area,
154 mtime_t render_date );
156 static void UpdateSPU ( spu_t *, vlc_object_t * );
157 static int CropCallback( vlc_object_t *, char const *,
158 vlc_value_t, vlc_value_t, void * );
160 static int SpuControl( spu_t *, int, va_list );
162 static void SpuClearChannel( spu_t *p_spu, int i_channel );
164 /* Buffer allocation for SPU filter (blend, scale, ...) */
165 static subpicture_t *spu_new_buffer( filter_t * );
166 static void spu_del_buffer( filter_t *, subpicture_t * );
167 static picture_t *spu_new_video_buffer( filter_t * );
168 static void spu_del_video_buffer( filter_t *, picture_t * );
170 /* Buffer aloccation fir SUB filter */
171 static int SubFilterCallback( vlc_object_t *, char const *,
172 vlc_value_t, vlc_value_t, void * );
174 static int SubFilterAllocationInit( filter_t *, void * );
175 static void SubFilterAllocationClean( filter_t * );
178 static void SpuRenderCreateAndLoadText( spu_t * );
179 static void SpuRenderCreateAndLoadScale( spu_t * );
180 static void FilterRelease( filter_t *p_filter );
182 /*****************************************************************************
184 *****************************************************************************/
186 * Creates the subpicture unit
188 * \param p_this the parent object which creates the subpicture unit
190 spu_t *__spu_Create( vlc_object_t *p_this )
193 spu_private_t *p_sys;
195 p_spu = vlc_custom_create( p_this, sizeof(spu_t) + sizeof(spu_private_t),
196 VLC_OBJECT_GENERIC, "subpicture" );
201 /* Initialize spu fields */
202 p_spu->pf_control = SpuControl;
203 p_spu->p = p_sys = (spu_private_t*)&p_spu[1];
205 /* Initialize private fields */
206 vlc_mutex_init( &p_sys->lock );
208 SpuHeapInit( &p_sys->heap );
210 p_sys->p_blend = NULL;
211 p_sys->p_text = NULL;
212 p_sys->p_scale = NULL;
213 p_sys->p_scale_yuvp = NULL;
215 /* Register the default subpicture channel */
216 p_sys->i_channel = 2;
218 vlc_object_attach( p_spu, p_this );
220 p_sys->psz_chain_update = NULL;
221 p_sys->p_chain = filter_chain_New( p_spu, "sub filter", false,
222 SubFilterAllocationInit,
223 SubFilterAllocationClean,
226 /* Load text and scale module */
227 SpuRenderCreateAndLoadText( p_spu );
228 SpuRenderCreateAndLoadScale( p_spu );
231 p_sys->i_last_sort_date = -1;
237 * Initialise the subpicture unit
239 * \param p_spu the subpicture unit object
241 int spu_Init( spu_t *p_spu )
243 spu_private_t *p_sys = p_spu->p;
245 /* If the user requested a sub margin, we force the position. */
246 p_sys->i_margin = var_CreateGetInteger( p_spu, "sub-margin" );
248 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
249 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
250 var_TriggerCallback( p_spu, "sub-filter" );
256 * Destroy the subpicture unit
258 * \param p_this the parent object which destroys the subpicture unit
260 void spu_Destroy( spu_t *p_spu )
262 spu_private_t *p_sys = p_spu->p;
264 var_DelCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
267 filter_DeleteBlend( p_sys->p_blend );
270 FilterRelease( p_sys->p_text );
272 if( p_sys->p_scale_yuvp )
273 FilterRelease( p_sys->p_scale_yuvp );
276 FilterRelease( p_sys->p_scale );
278 filter_chain_Delete( p_sys->p_chain );
279 free( p_sys->psz_chain_update );
281 /* Destroy all remaining subpictures */
282 SpuHeapClean( &p_sys->heap );
284 vlc_mutex_destroy( &p_sys->lock );
286 vlc_object_release( p_spu );
290 * Attach/Detach the SPU from any input
292 * \param p_this the object in which to destroy the subpicture unit
293 * \param b_attach to select attach or detach
295 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
297 vlc_object_t *p_input;
299 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
305 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
306 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
307 vlc_object_release( p_input );
311 /* Delete callback */
312 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
313 vlc_object_release( p_input );
318 * Display a subpicture
320 * Remove the reservation flag of a subpicture, which will cause it to be
322 * \param p_spu the subpicture unit object
323 * \param p_subpic the subpicture to display
325 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
327 spu_private_t *p_sys = p_spu->p;
329 /* DEFAULT_CHAN always reset itself */
330 if( p_subpic->i_channel == DEFAULT_CHAN )
331 SpuClearChannel( p_spu, DEFAULT_CHAN );
333 /* p_private is for spu only and cannot be non NULL here */
334 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
335 assert( r->p_private == NULL );
338 vlc_mutex_lock( &p_sys->lock );
339 if( SpuHeapPush( &p_sys->heap, p_subpic ) )
341 vlc_mutex_unlock( &p_sys->lock );
342 msg_Err( p_spu, "subpicture heap full" );
343 subpicture_Delete( p_subpic );
346 vlc_mutex_unlock( &p_sys->lock );
350 * This function renders all sub picture units in the list.
352 void spu_RenderSubpictures( spu_t *p_spu,
353 picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
354 subpicture_t *p_subpic_list,
355 const video_format_t *p_fmt_src,
356 mtime_t render_date )
358 spu_private_t *p_sys = p_spu->p;
360 const mtime_t system_date = mdate();
362 const int i_source_video_width = p_fmt_src->i_width;
363 const int i_source_video_height = p_fmt_src->i_height;
365 unsigned int i_subpicture;
366 subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
368 unsigned int i_subtitle_region_count;
369 spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
370 spu_area_t *p_subtitle_area;
373 vlc_mutex_lock( &p_sys->lock );
375 /* Preprocess subpictures */
377 i_subtitle_region_count = 0;
378 for( subpicture_t * p_subpic = p_subpic_list;
380 p_subpic = p_subpic->p_next )
382 /* TODO remove pre-render */
383 if( p_subpic->pf_pre_render )
384 p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
386 if( p_subpic->pf_update_regions )
388 video_format_t fmt_org = *p_fmt_dst;
390 fmt_org.i_visible_width = i_source_video_width;
392 fmt_org.i_visible_height = i_source_video_height;
394 p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org,
395 p_subpic->b_subtitle ? render_date : system_date );
399 if( p_subpic->b_subtitle )
401 for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
402 i_subtitle_region_count++;
406 pp_subpicture[i_subpicture++] = p_subpic;
409 /* Be sure we have at least 1 picture to process */
410 if( i_subpicture <= 0 )
412 vlc_mutex_unlock( &p_sys->lock );
416 /* Now order subpicture array
417 * XXX The order is *really* important for overlap subtitles positionning */
418 qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
420 /* Allocate area array for subtitle overlap */
422 p_subtitle_area = p_subtitle_area_buffer;
423 if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
424 p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
426 /* Create the blending module */
427 if( !p_sys->p_blend )
428 p_spu->p->p_blend = filter_NewBlend( VLC_OBJECT(p_spu), p_fmt_dst->i_chroma );
430 /* Process all subpictures and regions (in the right order) */
431 for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
433 subpicture_t *p_subpic = pp_subpicture[i_index];
434 subpicture_region_t *p_region;
436 if( !p_subpic->p_region )
439 /* FIXME when possible use a better rendering size than source size
440 * (max of display size and source size for example) FIXME */
441 int i_render_width = p_subpic->i_original_picture_width;
442 int i_render_height = p_subpic->i_original_picture_height;
443 if( !i_render_width || !i_render_height )
445 if( i_render_width != 0 || i_render_height != 0 )
446 msg_Err( p_spu, "unsupported original picture size %dx%d",
447 i_render_width, i_render_height );
449 p_subpic->i_original_picture_width = i_render_width = i_source_video_width;
450 p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
455 p_sys->p_text->fmt_out.video.i_width =
456 p_sys->p_text->fmt_out.video.i_visible_width = i_render_width;
458 p_sys->p_text->fmt_out.video.i_height =
459 p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
462 /* Compute scaling from picture to source size */
463 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
464 i_source_video_height, i_render_height );
466 /* Update scaling from source size to display size(p_fmt_dst) */
467 scale.w = scale.w * p_fmt_dst->i_width / i_source_video_width;
468 scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
470 /* Set default subpicture aspect ratio
471 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
473 p_region = p_subpic->p_region;
474 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
476 if( p_region->fmt.i_aspect != 0 )
478 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
479 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
483 p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
484 p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
488 /* Take care of the aspect ratio */
489 if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
490 p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
492 /* FIXME FIXME what about region->i_x/i_y ? */
494 (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
495 p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
498 /* Render all regions
499 * We always transform non absolute subtitle into absolute one on the
500 * first rendering to allow good subtitle overlap support.
502 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
506 /* Check scale validity */
507 if( scale.w <= 0 || scale.h <= 0 )
511 SpuRenderRegion( p_spu, p_pic_dst, &area,
512 p_subpic, p_region, scale, p_fmt_dst,
513 p_subtitle_area, i_subtitle_area,
514 p_subpic->b_subtitle ? render_date : system_date );
516 if( p_subpic->b_subtitle )
518 area = spu_area_unscaled( area, scale );
519 if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
521 p_region->i_x = area.i_x;
522 p_region->i_y = area.i_y;
524 if( p_subtitle_area )
525 p_subtitle_area[i_subtitle_area++] = area;
528 if( p_subpic->b_subtitle )
529 p_subpic->b_absolute = true;
533 if( p_subtitle_area != p_subtitle_area_buffer )
534 free( p_subtitle_area );
536 vlc_mutex_unlock( &p_sys->lock );
539 /*****************************************************************************
540 * spu_SortSubpictures: find the subpictures to display
541 *****************************************************************************
542 * This function parses all subpictures and decides which ones need to be
543 * displayed. If no picture has been selected, display_date will depend on
545 * We also check for ephemer DVD subpictures (subpictures that have
546 * to be removed if a newer one is available), which makes it a lot
547 * more difficult to guess if a subpicture has to be rendered or not.
548 *****************************************************************************/
549 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t render_date,
550 bool b_subtitle_only )
552 spu_private_t *p_sys = p_spu->p;
554 subpicture_t *p_subpic = NULL;
555 const mtime_t system_date = mdate();
557 /* Update sub-filter chain */
558 vlc_mutex_lock( &p_sys->lock );
559 char *psz_chain_update = p_sys->psz_chain_update;
560 p_sys->psz_chain_update = NULL;
561 vlc_mutex_unlock( &p_sys->lock );
563 if( psz_chain_update )
565 filter_chain_Reset( p_sys->p_chain, NULL, NULL );
567 filter_chain_AppendFromString( p_spu->p->p_chain, psz_chain_update );
569 free( psz_chain_update );
572 /* Run subpicture filters */
573 filter_chain_SubFilter( p_sys->p_chain, render_date );
575 vlc_mutex_lock( &p_sys->lock );
577 /* We get an easily parsable chained list of subpictures which
578 * ends with NULL since p_subpic was initialized to NULL. */
579 for( i_channel = 0; i_channel < p_sys->i_channel; i_channel++ )
581 subpicture_t *p_available_subpic[VOUT_MAX_SUBPICTURES];
582 bool pb_available_late[VOUT_MAX_SUBPICTURES];
585 mtime_t start_date = render_date;
586 mtime_t ephemer_subtitle_date = 0;
587 mtime_t ephemer_system_date = 0;
588 int64_t i_ephemer_subtitle_order = INT64_MIN;
589 int64_t i_ephemer_system_order = INT64_MIN;
592 /* Select available pictures */
593 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
595 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
596 subpicture_t *p_current = p_entry->p_subpicture;
600 if( !p_current || p_entry->b_reject )
602 if( p_entry->b_reject )
603 SpuHeapDeleteAt( &p_sys->heap, i_index );
607 if( p_current->i_channel != i_channel ||
608 ( b_subtitle_only && !p_current->b_subtitle ) )
613 render_date < p_current->i_start )
615 /* Too early, come back next monday */
619 mtime_t *pi_ephemer_date = p_current->b_subtitle ? &ephemer_subtitle_date : &ephemer_system_date;
620 int64_t *pi_ephemer_order = p_current->b_subtitle ? &i_ephemer_subtitle_order : &i_ephemer_system_order;
621 if( p_current->i_start >= *pi_ephemer_date )
623 *pi_ephemer_date = p_current->i_start;
624 if( p_current->i_order > *pi_ephemer_order )
625 *pi_ephemer_order = p_current->i_order;
628 b_stop_valid = !p_current->b_ephemer || p_current->i_stop > p_current->i_start;
630 b_late = b_stop_valid && p_current->i_stop <= p_current->b_subtitle ? render_date : system_date;
632 /* start_date will be used for correct automatic overlap support
633 * in case picture that should not be displayed anymore (display_time)
634 * overlap with a picture to be displayed (p_current->i_start) */
635 if( p_current->b_subtitle && !b_late && !p_current->b_ephemer )
636 start_date = p_current->i_start;
639 p_available_subpic[i_available] = p_current;
640 pb_available_late[i_available] = b_late;
644 /* Only forced old picture display at the transition */
645 if( start_date < p_sys->i_last_sort_date )
646 start_date = p_sys->i_last_sort_date;
647 if( start_date <= 0 )
648 start_date = INT64_MAX;
650 /* Select pictures to be displayed */
651 for( i_index = 0; i_index < i_available; i_index++ )
653 subpicture_t *p_current = p_available_subpic[i_index];
654 bool b_late = pb_available_late[i_index];
656 const mtime_t stop_date = p_current->b_subtitle ? __MAX( start_date, p_sys->i_last_sort_date ) : system_date;
657 const mtime_t ephemer_date = p_current->b_subtitle ? ephemer_subtitle_date : ephemer_system_date;
658 const int64_t i_ephemer_order = p_current->b_subtitle ? i_ephemer_subtitle_order : i_ephemer_system_order;
660 /* Destroy late and obsolete ephemer subpictures */
661 bool b_rejet = b_late && p_current->i_stop <= stop_date;
662 if( p_current->b_ephemer )
664 if( p_current->i_start < ephemer_date )
666 else if( p_current->i_start == ephemer_date &&
667 p_current->i_order < i_ephemer_order )
672 SpuHeapDeleteSubpicture( &p_sys->heap, p_current );
674 SubpictureChain( &p_subpic, p_current );
678 p_sys->i_last_sort_date = render_date;
679 vlc_mutex_unlock( &p_sys->lock );
684 void spu_OffsetSubtitleDate( spu_t *p_spu, mtime_t i_duration )
686 spu_private_t *p_sys = p_spu->p;
688 vlc_mutex_lock( &p_sys->lock );
689 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
691 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i];
692 subpicture_t *p_current = p_entry->p_subpicture;
694 if( p_current && p_current->b_subtitle )
696 if( p_current->i_start > 0 )
697 p_current->i_start += i_duration;
698 if( p_current->i_stop > 0 )
699 p_current->i_stop += i_duration;
702 vlc_mutex_unlock( &p_sys->lock );
705 /*****************************************************************************
706 * subpicture_t allocation
707 *****************************************************************************/
708 subpicture_t *subpicture_New( void )
710 subpicture_t *p_subpic = calloc( 1, sizeof(*p_subpic) );
714 p_subpic->i_order = 0;
715 p_subpic->b_absolute = true;
716 p_subpic->b_fade = false;
717 p_subpic->b_subtitle = false;
718 p_subpic->i_alpha = 0xFF;
719 p_subpic->p_region = NULL;
720 p_subpic->pf_render = NULL;
721 p_subpic->pf_destroy = NULL;
722 p_subpic->p_sys = NULL;
727 void subpicture_Delete( subpicture_t *p_subpic )
729 subpicture_region_ChainDelete( p_subpic->p_region );
730 p_subpic->p_region = NULL;
732 if( p_subpic->pf_destroy )
734 p_subpic->pf_destroy( p_subpic );
739 static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
741 p_subpic->p_next = *pp_head;
746 subpicture_t *subpicture_NewFromPicture( vlc_object_t *p_obj,
747 picture_t *p_picture, vlc_fourcc_t i_chroma )
750 video_format_t fmt_in = p_picture->format;
753 video_format_t fmt_out;
755 fmt_out.i_chroma = i_chroma;
758 image_handler_t *p_image = image_HandlerCreate( p_obj );
762 picture_t *p_pip = image_Convert( p_image, p_picture, &fmt_in, &fmt_out );
764 image_HandlerDelete( p_image );
769 subpicture_t *p_subpic = subpicture_New();
772 picture_Release( p_pip );
776 p_subpic->i_original_picture_width = fmt_out.i_width;
777 p_subpic->i_original_picture_height = fmt_out.i_height;
779 fmt_out.i_aspect = 0;
781 fmt_out.i_sar_den = 0;
783 p_subpic->p_region = subpicture_region_New( &fmt_out );
784 if( p_subpic->p_region )
786 picture_Release( p_subpic->p_region->p_picture );
787 p_subpic->p_region->p_picture = p_pip;
791 picture_Release( p_pip );
796 /*****************************************************************************
797 * subpicture_region_t allocation
798 *****************************************************************************/
799 subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
801 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
805 p_region->fmt = *p_fmt;
806 p_region->fmt.p_palette = NULL;
807 if( p_fmt->i_chroma == VLC_CODEC_YUVP )
809 p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
810 if( p_fmt->p_palette )
811 *p_region->fmt.p_palette = *p_fmt->p_palette;
813 p_region->i_alpha = 0xff;
814 p_region->p_next = NULL;
815 p_region->p_private = NULL;
816 p_region->psz_text = NULL;
817 p_region->p_style = NULL;
818 p_region->p_picture = NULL;
820 if( p_fmt->i_chroma == VLC_CODEC_TEXT )
823 p_region->p_picture = picture_New( p_fmt->i_chroma, p_fmt->i_width, p_fmt->i_height,
825 if( !p_region->p_picture )
827 free( p_fmt->p_palette );
836 void subpicture_region_Delete( subpicture_region_t *p_region )
841 if( p_region->p_private )
842 SpuRegionPrivateDelete( p_region->p_private );
844 if( p_region->p_picture )
845 picture_Release( p_region->p_picture );
847 free( p_region->fmt.p_palette );
849 free( p_region->psz_text );
850 free( p_region->psz_html );
851 if( p_region->p_style )
852 text_style_Delete( p_region->p_style );
857 void subpicture_region_ChainDelete( subpicture_region_t *p_head )
861 subpicture_region_t *p_next = p_head->p_next;
863 subpicture_region_Delete( p_head );
871 /*****************************************************************************
873 *****************************************************************************/
874 static void SpuHeapInit( spu_heap_t *p_heap )
876 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
878 spu_heap_entry_t *e = &p_heap->p_entry[i];
880 e->p_subpicture = NULL;
885 static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
887 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
889 spu_heap_entry_t *e = &p_heap->p_entry[i];
891 if( e->p_subpicture )
894 e->p_subpicture = p_subpic;
901 static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
903 spu_heap_entry_t *e = &p_heap->p_entry[i_index];
905 if( e->p_subpicture )
906 subpicture_Delete( e->p_subpicture );
908 e->p_subpicture = NULL;
911 static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
913 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
915 spu_heap_entry_t *e = &p_heap->p_entry[i];
917 if( e->p_subpicture != p_subpic )
920 SpuHeapDeleteAt( p_heap, i );
926 static void SpuHeapClean( spu_heap_t *p_heap )
928 for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
930 spu_heap_entry_t *e = &p_heap->p_entry[i];
931 if( e->p_subpicture )
932 subpicture_Delete( e->p_subpicture );
936 static subpicture_region_private_t *SpuRegionPrivateNew( video_format_t *p_fmt )
938 subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
943 p_private->fmt = *p_fmt;
944 if( p_fmt->p_palette )
946 p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
947 if( p_private->fmt.p_palette )
948 *p_private->fmt.p_palette = *p_fmt->p_palette;
950 p_private->p_picture = NULL;
954 static void SpuRegionPrivateDelete( subpicture_region_private_t *p_private )
956 if( p_private->p_picture )
957 picture_Release( p_private->p_picture );
958 free( p_private->fmt.p_palette );
962 static void FilterRelease( filter_t *p_filter )
964 if( p_filter->p_module )
965 module_unneed( p_filter, p_filter->p_module );
967 vlc_object_detach( p_filter );
968 vlc_object_release( p_filter );
971 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
975 assert( !p_spu->p->p_text );
978 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
979 VLC_OBJECT_GENERIC, "spu text" );
983 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
985 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
986 p_text->fmt_out.video.i_width =
987 p_text->fmt_out.video.i_visible_width = 32;
988 p_text->fmt_out.video.i_height =
989 p_text->fmt_out.video.i_visible_height = 32;
991 p_text->pf_sub_buffer_new = spu_new_buffer;
992 p_text->pf_sub_buffer_del = spu_del_buffer;
994 vlc_object_attach( p_text, p_spu );
996 /* FIXME TOCHECK shouldn't module_need( , , psz_modulename, false ) do the
997 * same than these 2 calls ? */
998 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
999 if( psz_modulename && *psz_modulename )
1001 p_text->p_module = module_need( p_text, "text renderer",
1002 psz_modulename, true );
1004 free( psz_modulename );
1006 if( !p_text->p_module )
1007 p_text->p_module = module_need( p_text, "text renderer", NULL, false );
1009 /* Create a few variables used for enhanced text rendering */
1010 var_Create( p_text, "spu-duration", VLC_VAR_TIME );
1011 var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
1012 var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
1013 var_Create( p_text, "scale", VLC_VAR_INTEGER );
1016 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
1017 vlc_fourcc_t i_src_chroma, vlc_fourcc_t i_dst_chroma,
1022 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
1023 VLC_OBJECT_GENERIC, "scale" );
1027 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
1028 p_scale->fmt_in.video.i_chroma = i_src_chroma;
1029 p_scale->fmt_in.video.i_width =
1030 p_scale->fmt_in.video.i_height = 32;
1032 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
1033 p_scale->fmt_out.video.i_chroma = i_dst_chroma;
1034 p_scale->fmt_out.video.i_width =
1035 p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
1037 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
1038 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
1040 vlc_object_attach( p_scale, p_obj );
1041 p_scale->p_module = module_need( p_scale, "video filter2", NULL, false );
1045 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
1047 assert( !p_spu->p->p_scale );
1048 assert( !p_spu->p->p_scale_yuvp );
1049 /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
1051 p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
1052 VLC_CODEC_YUVA, VLC_CODEC_YUVA, true );
1053 /* This one is used for YUVP to YUVA/RGBA without scaling
1054 * FIXME rename it */
1055 p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
1056 VLC_CODEC_YUVP, VLC_CODEC_YUVA, false );
1059 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
1060 subpicture_t *p_subpic, subpicture_region_t *p_region,
1061 int i_min_scale_ratio, mtime_t render_date )
1063 filter_t *p_text = p_spu->p->p_text;
1065 assert( p_region->fmt.i_chroma == VLC_CODEC_TEXT );
1067 if( !p_text || !p_text->p_module )
1070 /* Setup 3 variables which can be used to render
1071 * time-dependent text (and effects). The first indicates
1072 * the total amount of time the text will be on screen,
1073 * the second the amount of time it has already been on
1074 * screen (can be a negative value as text is layed out
1075 * before it is rendered) and the third is a feedback
1076 * variable from the renderer - if the renderer sets it
1077 * then this particular text is time-dependent, eg. the
1078 * visual progress bar inside the text in karaoke and the
1079 * text needs to be rendered multiple times in order for
1080 * the effect to work - we therefore need to return the
1081 * region to its original state at the end of the loop,
1082 * instead of leaving it in YUVA or YUVP.
1083 * Any renderer which is unaware of how to render
1084 * time-dependent text can happily ignore the variables
1085 * and render the text the same as usual - it should at
1086 * least show up on screen, but the effect won't change
1087 * the text over time.
1089 var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
1090 var_SetTime( p_text, "spu-elapsed", render_date );
1091 var_SetBool( p_text, "text-rerender", false );
1092 var_SetInteger( p_text, "scale", i_min_scale_ratio );
1094 if( p_text->pf_render_html && p_region->psz_html )
1096 p_text->pf_render_html( p_text, p_region, p_region );
1098 else if( p_text->pf_render_text )
1100 p_text->pf_render_text( p_text, p_region, p_region );
1102 *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
1105 p_region->i_align |= SUBPICTURE_RENDERED;
1109 * A few scale functions helpers.
1111 static spu_scale_t spu_scale_create( int w, int h )
1113 spu_scale_t s = { .w = w, .h = h };
1120 static spu_scale_t spu_scale_unit( void )
1122 return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
1124 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
1126 return spu_scale_create( wn * SCALE_UNIT / wd,
1127 hn * SCALE_UNIT / hd );
1129 static int spu_scale_w( int v, const spu_scale_t s )
1131 return v * s.w / SCALE_UNIT;
1133 static int spu_scale_h( int v, const spu_scale_t s )
1135 return v * s.h / SCALE_UNIT;
1137 static int spu_invscale_w( int v, const spu_scale_t s )
1139 return v * SCALE_UNIT / s.w;
1141 static int spu_invscale_h( int v, const spu_scale_t s )
1143 return v * SCALE_UNIT / s.h;
1147 * A few area functions helpers
1149 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
1151 spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
1154 static spu_area_t spu_area_scaled( spu_area_t a )
1156 if( a.scale.w == SCALE_UNIT && a.scale.h == SCALE_UNIT )
1159 a.i_x = spu_scale_w( a.i_x, a.scale );
1160 a.i_y = spu_scale_h( a.i_y, a.scale );
1162 a.i_width = spu_scale_w( a.i_width, a.scale );
1163 a.i_height = spu_scale_h( a.i_height, a.scale );
1165 a.scale = spu_scale_unit();
1168 static spu_area_t spu_area_unscaled( spu_area_t a, spu_scale_t s )
1170 if( a.scale.w == s.w && a.scale.h == s.h )
1173 a = spu_area_scaled( a );
1175 a.i_x = spu_invscale_w( a.i_x, s );
1176 a.i_y = spu_invscale_h( a.i_y, s );
1178 a.i_width = spu_invscale_w( a.i_width, s );
1179 a.i_height = spu_invscale_h( a.i_height, s );
1184 static bool spu_area_overlap( spu_area_t a, spu_area_t b )
1189 a = spu_area_scaled( a );
1190 b = spu_area_scaled( b );
1192 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 ) &&
1193 __MAX( a.i_y-i_dy, b.i_y ) < __MIN( a.i_y+a.i_height+i_dy, b.i_y+b.i_height );
1197 * Avoid area overlapping
1199 static void SpuAreaFixOverlap( spu_area_t *p_dst,
1200 const spu_area_t *p_master,
1201 const spu_area_t *p_sub, int i_sub, int i_align )
1203 spu_area_t a = spu_area_scaled( *p_dst );
1204 bool b_moved = false;
1207 assert( p_master->i_x == 0 && p_master->i_y == 0 );
1209 /* Check for overlap
1210 * XXX It is not fast O(n^2) but we should not have a lot of region */
1214 for( int i = 0; i < i_sub; i++ )
1216 spu_area_t sub = spu_area_scaled( p_sub[i] );
1218 if( !spu_area_overlap( a, sub ) )
1221 if( i_align & SUBPICTURE_ALIGN_TOP )
1224 int i_y = sub.i_y + sub.i_height;
1225 if( i_y + a.i_height > p_master->i_height )
1230 else if( i_align & SUBPICTURE_ALIGN_BOTTOM )
1233 int i_y = sub.i_y - a.i_height;
1241 /* TODO what to do in this case? */
1242 //fprintf( stderr, "Overlap with unsupported alignment\n" );
1252 *p_dst = spu_area_unscaled( a, p_dst->scale );
1259 static void SpuRegionPlace( int *pi_x, int *pi_y,
1260 const subpicture_t *p_subpic,
1261 const subpicture_region_t *p_region,
1264 const int i_delta_x = p_region->i_x;
1265 const int i_delta_y = p_region->i_y;
1268 assert( p_region->i_x != INT_MAX && p_region->i_y != INT_MAX );
1269 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
1273 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
1275 i_y = p_subpic->i_original_picture_height - p_region->fmt.i_height - i_delta_y;
1279 i_y = p_subpic->i_original_picture_height / 2 - p_region->fmt.i_height / 2;
1282 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
1286 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
1288 i_x = p_subpic->i_original_picture_width - p_region->fmt.i_width - i_delta_x;
1292 i_x = p_subpic->i_original_picture_width / 2 - p_region->fmt.i_width / 2;
1295 if( p_subpic->b_absolute )
1301 /* Margin shifts all subpictures */
1302 if( i_margin_y != 0 )
1305 /* Clamp offset to not go out of the screen (when possible) */
1306 const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
1312 const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
1323 * This function computes the current alpha value for a given region.
1325 static int SpuRegionAlpha( subpicture_t *p_subpic, subpicture_region_t *p_region )
1327 /* Compute alpha blend value */
1328 int i_fade_alpha = 255;
1329 if( p_subpic->b_fade )
1331 mtime_t i_fade_start = ( p_subpic->i_stop +
1332 p_subpic->i_start ) / 2;
1333 mtime_t i_now = mdate();
1335 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
1337 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
1338 ( p_subpic->i_stop - i_fade_start );
1341 return i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025;
1345 * It will render the provided region onto p_pic_dst.
1348 static void SpuRenderRegion( spu_t *p_spu,
1349 picture_t *p_pic_dst, spu_area_t *p_area,
1350 subpicture_t *p_subpic, subpicture_region_t *p_region,
1351 const spu_scale_t scale_size,
1352 const video_format_t *p_fmt,
1353 const spu_area_t *p_subtitle_area, int i_subtitle_area,
1354 mtime_t render_date )
1356 spu_private_t *p_sys = p_spu->p;
1358 video_format_t fmt_original = p_region->fmt;
1359 bool b_rerender_text = false;
1360 bool b_restore_format = false;
1364 video_format_t region_fmt;
1365 picture_t *p_region_picture;
1367 /* Invalidate area by default */
1368 *p_area = spu_area_create( 0,0, 0,0, scale_size );
1370 /* Render text region */
1371 if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
1373 const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
1374 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region,
1375 i_min_scale_ratio, render_date );
1376 b_restore_format = b_rerender_text;
1378 /* Check if the rendering has failed ... */
1379 if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
1383 /* Force palette if requested
1384 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
1385 * instead of only the right one (being the dvd spu).
1387 const bool b_using_palette = p_region->fmt.i_chroma == VLC_CODEC_YUVP;
1388 const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
1389 const bool b_force_crop = b_force_palette && p_sys->b_force_crop;
1390 bool b_changed_palette = false;
1393 /* Compute the margin which is expressed in destination pixel unit
1394 * The margin is applied only to subtitle and when no forced crop is
1395 * requested (dvd menu) */
1397 if( !b_force_crop && p_subpic->b_subtitle )
1398 i_margin_y = spu_invscale_h( p_sys->i_margin, scale_size );
1400 /* Place the picture
1401 * We compute the position in the rendered size */
1402 SpuRegionPlace( &i_x_offset, &i_y_offset,
1403 p_subpic, p_region, i_margin_y );
1405 /* Save this position for subtitle overlap support
1406 * it is really important that there are given without scale_size applied */
1407 *p_area = spu_area_create( i_x_offset, i_y_offset,
1408 p_region->fmt.i_width, p_region->fmt.i_height,
1411 /* Handle overlapping subtitles when possible */
1412 if( p_subpic->b_subtitle && !p_subpic->b_absolute )
1414 spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
1417 SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area,
1418 p_region->i_align );
1421 /* Fix the position for the current scale_size */
1422 i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
1423 i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
1426 if( b_force_palette )
1428 video_palette_t *p_palette = p_region->fmt.p_palette;
1429 video_palette_t palette;
1431 /* We suppose DVD palette here */
1432 palette.i_entries = 4;
1433 for( int i = 0; i < 4; i++ )
1434 for( int j = 0; j < 4; j++ )
1435 palette.palette[i][j] = p_sys->palette[i][j];
1437 if( p_palette->i_entries == palette.i_entries )
1439 for( int i = 0; i < p_palette->i_entries; i++ )
1440 for( int j = 0; j < 4; j++ )
1441 b_changed_palette |= p_palette->palette[i][j] != palette.palette[i][j];
1445 b_changed_palette = true;
1447 *p_palette = palette;
1451 region_fmt = p_region->fmt;
1452 p_region_picture = p_region->p_picture;
1455 /* Scale from rendered size to destination size */
1456 if( p_sys->p_scale && p_sys->p_scale->p_module &&
1457 ( !b_using_palette || ( p_sys->p_scale_yuvp && p_sys->p_scale_yuvp->p_module ) ) &&
1458 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_using_palette ) )
1460 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
1461 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
1463 /* Destroy the cache if unusable */
1464 if( p_region->p_private )
1466 subpicture_region_private_t *p_private = p_region->p_private;
1467 bool b_changed = false;
1469 /* Check resize changes */
1470 if( i_dst_width != p_private->fmt.i_width ||
1471 i_dst_height != p_private->fmt.i_height )
1474 /* Check forced palette changes */
1475 if( b_changed_palette )
1480 SpuRegionPrivateDelete( p_private );
1481 p_region->p_private = NULL;
1485 /* Scale if needed into cache */
1486 if( !p_region->p_private && i_dst_width > 0 && i_dst_height > 0 )
1488 filter_t *p_scale = p_sys->p_scale;
1490 picture_t *p_picture = p_region->p_picture;
1491 picture_Hold( p_picture );
1493 /* Convert YUVP to YUVA/RGBA first for better scaling quality */
1494 if( b_using_palette )
1496 filter_t *p_scale_yuvp = p_sys->p_scale_yuvp;
1498 p_scale_yuvp->fmt_in.video = p_region->fmt;
1500 /* TODO converting to RGBA for RGB video output is better */
1501 p_scale_yuvp->fmt_out.video = p_region->fmt;
1502 p_scale_yuvp->fmt_out.video.i_chroma = VLC_CODEC_YUVA;
1504 p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
1507 /* Well we will try conversion+scaling */
1508 msg_Warn( p_spu, "%4.4s to %4.4s conversion failed",
1509 (const char*)&p_scale_yuvp->fmt_in.video.i_chroma,
1510 (const char*)&p_scale_yuvp->fmt_out.video.i_chroma );
1514 /* Conversion(except from YUVP)/Scaling */
1516 ( p_picture->format.i_width != i_dst_width ||
1517 p_picture->format.i_height != i_dst_height ) )
1519 p_scale->fmt_in.video = p_picture->format;
1520 p_scale->fmt_out.video = p_picture->format;
1522 p_scale->fmt_out.video.i_width = i_dst_width;
1523 p_scale->fmt_out.video.i_height = i_dst_height;
1525 p_scale->fmt_out.video.i_visible_width =
1526 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
1527 p_scale->fmt_out.video.i_visible_height =
1528 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
1530 p_picture = p_scale->pf_video_filter( p_scale, p_picture );
1532 msg_Err( p_spu, "scaling failed" );
1538 p_region->p_private = SpuRegionPrivateNew( &p_picture->format );
1539 if( p_region->p_private )
1541 p_region->p_private->p_picture = p_picture;
1542 if( !p_region->p_private->p_picture )
1544 SpuRegionPrivateDelete( p_region->p_private );
1545 p_region->p_private = NULL;
1550 picture_Release( p_picture );
1555 /* And use the scaled picture */
1556 if( p_region->p_private )
1558 region_fmt = p_region->p_private->fmt;
1559 p_region_picture = p_region->p_private->p_picture;
1563 /* Force cropping if requested */
1566 int i_crop_x = spu_scale_w( p_sys->i_crop_x, scale_size );
1567 int i_crop_y = spu_scale_h( p_sys->i_crop_y, scale_size );
1568 int i_crop_width = spu_scale_w( p_sys->i_crop_width, scale_size );
1569 int i_crop_height= spu_scale_h( p_sys->i_crop_height,scale_size );
1571 /* Find the intersection */
1572 if( i_crop_x + i_crop_width <= i_x_offset ||
1573 i_x_offset + (int)region_fmt.i_visible_width < i_crop_x ||
1574 i_crop_y + i_crop_height <= i_y_offset ||
1575 i_y_offset + (int)region_fmt.i_visible_height < i_crop_y )
1577 /* No intersection */
1578 region_fmt.i_visible_width =
1579 region_fmt.i_visible_height = 0;
1583 int i_x, i_y, i_x_end, i_y_end;
1584 i_x = __MAX( i_crop_x, i_x_offset );
1585 i_y = __MAX( i_crop_y, i_y_offset );
1586 i_x_end = __MIN( i_crop_x + i_crop_width,
1587 i_x_offset + (int)region_fmt.i_visible_width );
1588 i_y_end = __MIN( i_crop_y + i_crop_height,
1589 i_y_offset + (int)region_fmt.i_visible_height );
1591 region_fmt.i_x_offset = i_x - i_x_offset;
1592 region_fmt.i_y_offset = i_y - i_y_offset;
1593 region_fmt.i_visible_width = i_x_end - i_x;
1594 region_fmt.i_visible_height = i_y_end - i_y;
1596 i_x_offset = __MAX( i_x, 0 );
1597 i_y_offset = __MAX( i_y, 0 );
1601 /* Update the blender */
1602 if( filter_ConfigureBlend( p_spu->p->p_blend,
1603 p_fmt->i_width, p_fmt->i_height,
1605 filter_Blend( p_spu->p->p_blend,
1606 p_pic_dst, i_x_offset, i_y_offset,
1607 p_region_picture, SpuRegionAlpha( p_subpic, p_region ) ) )
1609 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
1610 (char *)&p_sys->p_blend->fmt_in.video.i_chroma,
1611 (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
1615 if( b_rerender_text )
1617 /* Some forms of subtitles need to be re-rendered more than
1618 * once, eg. karaoke. We therefore restore the region to its
1619 * pre-rendered state, so the next time through everything is
1622 if( p_region->p_picture )
1624 picture_Release( p_region->p_picture );
1625 p_region->p_picture = NULL;
1627 if( p_region->p_private )
1629 SpuRegionPrivateDelete( p_region->p_private );
1630 p_region->p_private = NULL;
1632 p_region->i_align &= ~SUBPICTURE_RENDERED;
1634 if( b_restore_format )
1635 p_region->fmt = fmt_original;
1639 * This function compares two 64 bits integers.
1640 * It can be used by qsort.
1642 static int IntegerCmp( int64_t i0, int64_t i1 )
1644 return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
1647 * This function compares 2 subpictures using the following properties
1648 * (ordered by priority)
1649 * 1. absolute positionning
1651 * 3. creation order (per channel)
1653 * It can be used by qsort.
1655 * XXX spu_RenderSubpictures depends heavily on this order.
1657 static int SubpictureCmp( const void *s0, const void *s1 )
1659 subpicture_t *p_subpic0 = *(subpicture_t**)s0;
1660 subpicture_t *p_subpic1 = *(subpicture_t**)s1;
1663 r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
1665 r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
1667 r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
1669 r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
1673 /*****************************************************************************
1674 * SpuClearChannel: clear an spu channel
1675 *****************************************************************************
1676 * This function destroys the subpictures which belong to the spu channel
1677 * corresponding to i_channel_id.
1678 *****************************************************************************/
1679 static void SpuClearChannel( spu_t *p_spu, int i_channel )
1681 spu_private_t *p_sys = p_spu->p;
1682 int i_subpic; /* subpicture index */
1684 vlc_mutex_lock( &p_sys->lock );
1686 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1688 spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
1689 subpicture_t *p_subpic = p_entry->p_subpicture;
1693 if( p_subpic->i_channel != i_channel && ( i_channel != -1 || p_subpic->i_channel == DEFAULT_CHAN ) )
1696 /* You cannot delete subpicture outside of spu_SortSubpictures */
1697 p_entry->b_reject = true;
1700 vlc_mutex_unlock( &p_sys->lock );
1703 /*****************************************************************************
1704 * spu_ControlDefault: default methods for the subpicture unit control.
1705 *****************************************************************************/
1706 static int SpuControl( spu_t *p_spu, int i_query, va_list args )
1708 spu_private_t *p_sys = p_spu->p;
1713 case SPU_CHANNEL_REGISTER:
1714 pi = (int *)va_arg( args, int * );
1715 vlc_mutex_lock( &p_sys->lock );
1717 *pi = p_sys->i_channel++;
1718 vlc_mutex_unlock( &p_sys->lock );
1721 case SPU_CHANNEL_CLEAR:
1722 i = (int)va_arg( args, int );
1723 SpuClearChannel( p_spu, i );
1727 msg_Dbg( p_spu, "control query not supported" );
1728 return VLC_EGENERIC;
1734 /*****************************************************************************
1735 * Object variables callbacks
1736 *****************************************************************************/
1738 /*****************************************************************************
1739 * UpdateSPU: update subpicture settings
1740 *****************************************************************************
1741 * This function is called from CropCallback and at initialization time, to
1742 * retrieve crop information from the input.
1743 *****************************************************************************/
1744 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1746 spu_private_t *p_sys = p_spu->p;
1749 vlc_mutex_lock( &p_sys->lock );
1751 p_sys->b_force_palette = false;
1752 p_sys->b_force_crop = false;
1754 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1756 vlc_mutex_unlock( &p_sys->lock );
1760 p_sys->b_force_crop = true;
1761 p_sys->i_crop_x = var_GetInteger( p_object, "x-start" );
1762 p_sys->i_crop_y = var_GetInteger( p_object, "y-start" );
1763 p_sys->i_crop_width = var_GetInteger( p_object, "x-end" ) - p_sys->i_crop_x;
1764 p_sys->i_crop_height = var_GetInteger( p_object, "y-end" ) - p_sys->i_crop_y;
1766 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1768 memcpy( p_sys->palette, val.p_address, 16 );
1769 p_sys->b_force_palette = true;
1771 vlc_mutex_unlock( &p_sys->lock );
1773 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1774 p_sys->i_crop_x, p_sys->i_crop_y,
1775 p_sys->i_crop_width, p_sys->i_crop_height,
1776 p_sys->b_force_palette );
1779 /*****************************************************************************
1780 * CropCallback: called when the highlight properties are changed
1781 *****************************************************************************
1782 * This callback is called from the input thread when we need cropping
1783 *****************************************************************************/
1784 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1785 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1787 VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1789 UpdateSPU( (spu_t *)p_data, p_object );
1793 /*****************************************************************************
1794 * Buffers allocation callbacks for the filters
1795 *****************************************************************************/
1796 struct filter_owner_sys_t
1802 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1804 filter_owner_sys_t *p_sys = p_filter->p_owner;
1806 subpicture_t *p_subpicture = subpicture_New();
1808 p_subpicture->i_channel = p_sys->i_channel;
1809 return p_subpicture;
1811 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1813 VLC_UNUSED( p_filter );
1814 subpicture_Delete( p_subpic );
1817 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1819 VLC_UNUSED(p_filter);
1820 return subpicture_New();
1822 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1824 VLC_UNUSED(p_filter);
1825 subpicture_Delete( p_subpic );
1828 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1830 const video_format_t *p_fmt = &p_filter->fmt_out.video;
1832 VLC_UNUSED(p_filter);
1833 return picture_New( p_fmt->i_chroma,
1834 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
1836 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
1838 VLC_UNUSED(p_filter);
1839 picture_Release( p_picture );
1842 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1844 spu_t *p_spu = p_data;
1846 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1848 return VLC_EGENERIC;
1850 p_filter->pf_sub_buffer_new = sub_new_buffer;
1851 p_filter->pf_sub_buffer_del = sub_del_buffer;
1853 p_filter->p_owner = p_sys;
1854 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1855 p_sys->p_spu = p_spu;
1860 static void SubFilterAllocationClean( filter_t *p_filter )
1862 filter_owner_sys_t *p_sys = p_filter->p_owner;
1864 SpuClearChannel( p_sys->p_spu, p_sys->i_channel );
1865 free( p_filter->p_owner );
1868 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1869 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1871 spu_t *p_spu = p_data;
1872 spu_private_t *p_sys = p_spu->p;
1874 VLC_UNUSED(p_object); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
1876 vlc_mutex_lock( &p_sys->lock );
1878 free( p_sys->psz_chain_update );
1879 p_sys->psz_chain_update = strdup( newval.psz_string );
1881 vlc_mutex_unlock( &p_sys->lock );