1 /*****************************************************************************
2 * vout_subpictures.c : subpicture management functions
3 *****************************************************************************
4 * Copyright (C) 2000-2007 the VideoLAN team
7 * Authors: Vincent Seguin <seguin@via.ecp.fr>
8 * Samuel Hocevar <sam@zoy.org>
9 * Gildas Bazin <gbazin@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
33 #include <vlc_common.h>
35 #include <vlc_block.h>
36 #include <vlc_filter.h>
38 #include "../libvlc.h"
42 /*****************************************************************************
44 *****************************************************************************/
45 static void UpdateSPU ( spu_t *, vlc_object_t * );
46 static int CropCallback( vlc_object_t *, char const *,
47 vlc_value_t, vlc_value_t, void * );
49 static int spu_vaControlDefault( spu_t *, int, va_list );
51 static subpicture_t *sub_new_buffer( filter_t * );
52 static void sub_del_buffer( filter_t *, subpicture_t * );
53 static subpicture_t *spu_new_buffer( filter_t * );
54 static void spu_del_buffer( filter_t *, subpicture_t * );
55 static picture_t *spu_new_video_buffer( filter_t * );
56 static void spu_del_video_buffer( filter_t *, picture_t * );
58 static int spu_ParseChain( spu_t * );
59 static int SubFilterCallback( vlc_object_t *, char const *,
60 vlc_value_t, vlc_value_t, void * );
62 static int SubFilterAllocationInit( filter_t *, void * );
63 static void SubFilterAllocationClean( filter_t * );
64 struct filter_owner_sys_t
76 #define SCALE_UNIT (1000)
79 static void SpuRenderCreateAndLoadText( spu_t *p_spu );
80 static void SpuRenderCreateAndLoadScale( spu_t *p_spu );
81 static void FilterRelease( filter_t *p_filter );
84 * Creates the subpicture unit
86 * \param p_this the parent object which creates the subpicture unit
88 spu_t *__spu_Create( vlc_object_t *p_this )
91 spu_t *p_spu = vlc_custom_create( p_this, sizeof( spu_t ),
92 VLC_OBJECT_GENERIC, "subpicture" );
94 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
96 p_spu->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
99 p_spu->p_blend = NULL;
100 p_spu->p_text = NULL;
101 p_spu->p_scale = NULL;
102 p_spu->p_scale_yuvp = NULL;
103 p_spu->pf_control = spu_vaControlDefault;
105 /* Register the default subpicture channel */
106 p_spu->i_channel = 2;
108 vlc_mutex_init( &p_spu->subpicture_lock );
110 vlc_object_attach( p_spu, p_this );
112 p_spu->p_chain = filter_chain_New( p_spu, "sub filter", false,
113 SubFilterAllocationInit,
114 SubFilterAllocationClean,
117 /* Load text and scale module */
118 SpuRenderCreateAndLoadText( p_spu );
119 SpuRenderCreateAndLoadScale( p_spu );
125 * Initialise the subpicture unit
127 * \param p_spu the subpicture unit object
129 int spu_Init( spu_t *p_spu )
133 /* If the user requested a sub margin, we force the position. */
134 var_Create( p_spu, "sub-margin", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
135 var_Get( p_spu, "sub-margin", &val );
136 p_spu->i_margin = val.i_int;
138 var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
139 var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
141 spu_ParseChain( p_spu );
146 int spu_ParseChain( spu_t *p_spu )
148 char *psz_parser = var_GetString( p_spu, "sub-filter" );
149 if( filter_chain_AppendFromString( p_spu->p_chain, psz_parser ) < 0 )
160 * Destroy the subpicture unit
162 * \param p_this the parent object which destroys the subpicture unit
164 void spu_Destroy( spu_t *p_spu )
168 /* Destroy all remaining subpictures */
169 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
171 if( p_spu->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
173 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
178 FilterRelease( p_spu->p_blend );
181 FilterRelease( p_spu->p_text );
183 if( p_spu->p_scale_yuvp )
184 FilterRelease( p_spu->p_scale_yuvp );
187 FilterRelease( p_spu->p_scale );
189 filter_chain_Delete( p_spu->p_chain );
191 vlc_mutex_destroy( &p_spu->subpicture_lock );
192 vlc_object_release( p_spu );
196 * Attach/Detach the SPU from any input
198 * \param p_this the object in which to destroy the subpicture unit
199 * \param b_attach to select attach or detach
201 void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
203 vlc_object_t *p_input;
205 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
206 if( !p_input ) return;
210 UpdateSPU( p_spu, VLC_OBJECT(p_input) );
211 var_AddCallback( p_input, "highlight", CropCallback, p_spu );
212 vlc_object_release( p_input );
216 /* Delete callback */
217 var_DelCallback( p_input, "highlight", CropCallback, p_spu );
218 vlc_object_release( p_input );
224 static void RegionPictureRelease( picture_t *p_pic )
226 free( p_pic->p_data_orig );
227 /* We use pf_release nullity to know if the picture has already been released. */
228 p_pic->pf_release = NULL;
232 * Create a subpicture region
234 * \param p_this vlc_object_t
235 * \param p_fmt the format that this subpicture region should have
237 subpicture_region_t *__spu_CreateRegion( vlc_object_t *p_this,
238 video_format_t *p_fmt )
240 subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
244 /* FIXME is that *really* wanted? */
245 if( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') )
246 p_fmt->p_palette = calloc( 1, sizeof(video_palette_t) );
248 p_fmt->p_palette = NULL; /* XXX and that above all? */
250 p_region->fmt = *p_fmt;
251 p_region->i_alpha = 0xff;
252 p_region->p_next = NULL;
253 p_region->p_cache = NULL;
254 p_region->psz_text = NULL;
255 p_region->p_style = NULL;
257 if( p_fmt->i_chroma == VLC_FOURCC('T','E','X','T') )
260 vout_AllocatePicture( p_this, &p_region->picture, p_fmt->i_chroma,
261 p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
263 if( !p_region->picture.i_planes )
265 free( p_fmt->p_palette );
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 /*****************************************************************************
432 * spu_RenderSubpictures: render a subpicture list
433 *****************************************************************************
434 * This function renders all sub picture units in the list.
435 *****************************************************************************/
436 static void FilterRelease( filter_t *p_filter )
438 if( p_filter->p_module )
439 module_Unneed( p_filter, p_filter->p_module );
441 vlc_object_detach( p_filter );
442 vlc_object_release( p_filter );
445 static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
449 assert( !p_spu->p_blend );
452 p_blend = vlc_custom_create( p_spu, sizeof(filter_t),
453 VLC_OBJECT_GENERIC, "blend" );
457 es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
459 es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
460 p_blend->fmt_out.video.i_x_offset = 0;
461 p_blend->fmt_out.video.i_y_offset = 0;
462 p_blend->fmt_out.video.i_chroma = i_chroma;
463 p_blend->fmt_out.video.i_aspect = i_aspect;
465 /* The blend module will be loaded when needed with the real
467 p_blend->p_module = NULL;
470 vlc_object_attach( p_blend, p_spu );
472 static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height, const video_format_t *p_in_fmt )
474 filter_t *p_blend = p_spu->p_blend;
479 if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
481 /* The chroma is not the same, we need to reload the blend module
482 * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
483 module_Unneed( p_blend, p_blend->p_module );
484 p_blend->p_module = NULL;
488 p_blend->fmt_in.video = *p_in_fmt;
491 p_blend->fmt_out.video.i_width =
492 p_blend->fmt_out.video.i_visible_width = i_out_width;
493 p_blend->fmt_out.video.i_height =
494 p_blend->fmt_out.video.i_visible_height = i_out_height;
497 if( !p_blend->p_module )
498 p_blend->p_module = module_Need( p_blend, "video blending", 0, 0 );
500 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
504 assert( !p_spu->p_text );
507 p_text = vlc_custom_create( p_spu, sizeof(filter_t),
508 VLC_OBJECT_GENERIC, "spu text" );
512 es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
514 es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
515 p_text->fmt_out.video.i_width =
516 p_text->fmt_out.video.i_visible_width = 32;
517 p_text->fmt_out.video.i_height =
518 p_text->fmt_out.video.i_visible_height = 32;
520 p_text->pf_sub_buffer_new = spu_new_buffer;
521 p_text->pf_sub_buffer_del = spu_del_buffer;
523 vlc_object_attach( p_text, p_spu );
525 /* FIXME TOCHECK shouldn't module_Need( , , psz_modulename, false ) do the
526 * same than these 2 calls ? */
527 char *psz_modulename = var_CreateGetString( p_spu, "text-renderer" );
528 if( psz_modulename && *psz_modulename )
530 p_text->p_module = module_Need( p_text, "text renderer",
531 psz_modulename, true );
533 free( psz_modulename );
535 if( !p_text->p_module )
536 p_text->p_module = module_Need( p_text, "text renderer", NULL, false );
539 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj, vlc_fourcc_t i_chroma )
543 p_scale = vlc_custom_create( p_obj, sizeof(filter_t),
544 VLC_OBJECT_GENERIC, "scale" );
548 es_format_Init( &p_scale->fmt_in, VIDEO_ES, 0 );
549 p_scale->fmt_in.video.i_chroma = i_chroma;
550 p_scale->fmt_in.video.i_width =
551 p_scale->fmt_in.video.i_height = 32;
553 es_format_Init( &p_scale->fmt_out, VIDEO_ES, 0 );
554 p_scale->fmt_out.video.i_chroma = i_chroma;
555 p_scale->fmt_out.video.i_width =
556 p_scale->fmt_out.video.i_height = 16;
558 p_scale->pf_vout_buffer_new = spu_new_video_buffer;
559 p_scale->pf_vout_buffer_del = spu_del_video_buffer;
561 vlc_object_attach( p_scale, p_obj );
562 p_scale->p_module = module_Need( p_scale, "video filter2", 0, 0 );
566 static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
568 /* FIXME: We'll also be using it for YUVA and RGBA blending ... */
570 assert( !p_spu->p_scale );
571 assert( !p_spu->p_scale_yuvp );
572 p_spu->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','A') );
573 p_spu->p_scale_yuvp = p_spu->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu), VLC_FOURCC('Y','U','V','P') );
576 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
577 subpicture_t *p_subpic, subpicture_region_t *p_region, int i_min_scale_ratio )
579 assert( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') );
581 if( !p_spu->p_text || !p_spu->p_text->p_module )
584 /* Setup 3 variables which can be used to render
585 * time-dependent text (and effects). The first indicates
586 * the total amount of time the text will be on screen,
587 * the second the amount of time it has already been on
588 * screen (can be a negative value as text is layed out
589 * before it is rendered) and the third is a feedback
590 * variable from the renderer - if the renderer sets it
591 * then this particular text is time-dependent, eg. the
592 * visual progress bar inside the text in karaoke and the
593 * text needs to be rendered multiple times in order for
594 * the effect to work - we therefore need to return the
595 * region to its original state at the end of the loop,
596 * instead of leaving it in YUVA or YUVP.
597 * Any renderer which is unaware of how to render
598 * time-dependent text can happily ignore the variables
599 * and render the text the same as usual - it should at
600 * least show up on screen, but the effect won't change
601 * the text over time.
604 /* FIXME why these variables are recreated every time and not
605 * when text renderer module was created ? */
606 var_Create( p_spu->p_text, "spu-duration", VLC_VAR_TIME );
607 var_Create( p_spu->p_text, "spu-elapsed", VLC_VAR_TIME );
608 var_Create( p_spu->p_text, "text-rerender", VLC_VAR_BOOL );
609 var_Create( p_spu->p_text, "scale", VLC_VAR_INTEGER );
611 var_SetTime( p_spu->p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
612 var_SetTime( p_spu->p_text, "spu-elapsed", mdate() - p_subpic->i_start );
613 var_SetBool( p_spu->p_text, "text-rerender", false );
614 var_SetInteger( p_spu->p_text, "scale", i_min_scale_ratio );
616 if( p_spu->p_text->pf_render_html && p_region->psz_html )
618 p_spu->p_text->pf_render_html( p_spu->p_text,
619 p_region, p_region );
621 else if( p_spu->p_text->pf_render_text )
623 p_spu->p_text->pf_render_text( p_spu->p_text,
624 p_region, p_region );
626 *pb_rerender_text = var_GetBool( p_spu->p_text, "text-rerender" );
628 var_Destroy( p_spu->p_text, "spu-duration" );
629 var_Destroy( p_spu->p_text, "spu-elapsed" );
630 var_Destroy( p_spu->p_text, "text-rerender" );
631 var_Destroy( p_spu->p_text, "scale" );
634 p_region->i_align |= SUBPICTURE_RENDERED;
638 * A few scale functions helpers.
646 static spu_scale_t spu_scale_create( int w, int h )
648 spu_scale_t s = { .w = w, .h = h };
655 static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd )
657 return spu_scale_create( wn * SCALE_UNIT / wd,
658 hn * SCALE_UNIT / hd );
660 static int spu_scale_w( int v, const spu_scale_t s )
662 return v * s.w / SCALE_UNIT;
664 static int spu_scale_h( int v, const spu_scale_t s )
666 return v * s.h / SCALE_UNIT;
672 static void SpuRegionPlace( int *pi_x, int *pi_y,
673 const video_format_t *p_fmt,
674 const subpicture_t *p_subpic,
675 const subpicture_region_t *p_region )
677 int i_delta_x = p_region->i_x;
678 int i_delta_y = p_region->i_y;
681 if( p_region->i_align & SUBPICTURE_ALIGN_TOP )
685 else if( p_region->i_align & SUBPICTURE_ALIGN_BOTTOM )
687 i_y = p_fmt->i_height - p_region->fmt.i_height - i_delta_y;
691 i_y = p_fmt->i_height / 2 - p_region->fmt.i_height / 2;
694 if( p_region->i_align & SUBPICTURE_ALIGN_LEFT )
698 else if( p_region->i_align & SUBPICTURE_ALIGN_RIGHT )
700 i_x = p_fmt->i_width - p_region->fmt.i_width - i_delta_x;
704 i_x = p_fmt->i_width / 2 - p_region->fmt.i_width / 2;
707 if( p_subpic->b_absolute )
721 static void SpuRenderRegion( spu_t *p_spu,
722 picture_t *p_pic_dst,
723 subpicture_t *p_subpic, subpicture_region_t *p_region,
724 const spu_scale_t scale_size,
725 const video_format_t *p_fmt )
727 video_format_t fmt_original;
728 bool b_rerender_text;
729 bool b_restore_format = false;
735 vlc_assert_locked( &p_spu->subpicture_lock );
737 fmt_original = p_region->fmt;
738 b_rerender_text = false;
739 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
741 SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, SCALE_UNIT );
742 b_restore_format = b_rerender_text;
744 /* Check if the rendering has failed ... */
745 if( p_region->fmt.i_chroma == VLC_FOURCC('T','E','X','T') )
749 /* Force palette if requested
750 * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
751 * instead of only the right one (being the dvd spu).
753 const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC('Y','U','V','P');
754 const bool b_force_palette = b_using_palette && p_spu->b_force_palette;
755 const bool b_force_crop = b_force_palette && p_spu->b_force_crop;
757 if( b_force_palette )
759 /* It looks so wrong I won't comment
760 * p_palette->palette is [256][4] with a int i_entries
761 * p_spu->palette is [4][4]
763 p_region->fmt.p_palette->i_entries = 4;
764 memcpy( p_region->fmt.p_palette->palette, p_spu->palette, 4*sizeof(uint32_t) );
767 if( b_using_palette )
768 p_scale = p_spu->p_scale_yuvp;
770 p_scale = p_spu->p_scale;
773 ( scale_size.w != SCALE_UNIT || scale_size.h != SCALE_UNIT || b_force_palette ) )
775 const unsigned i_dst_width = spu_scale_w( p_region->fmt.i_width, scale_size );
776 const unsigned i_dst_height = spu_scale_h( p_region->fmt.i_height, scale_size );
778 /* Destroy if cache is unusable */
779 if( p_region->p_cache )
781 if( p_region->p_cache->fmt.i_width != i_dst_width ||
782 p_region->p_cache->fmt.i_height != i_dst_height ||
785 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
787 p_region->p_cache = NULL;
791 /* Scale if needed into cache */
792 if( !p_region->p_cache )
796 p_scale->fmt_in.video = p_region->fmt;
797 p_scale->fmt_out.video = p_region->fmt;
800 p_subpic->pf_create_region( VLC_OBJECT(p_spu),
801 &p_scale->fmt_out.video );
802 p_region->p_cache->p_next = p_region->p_next;
804 if( p_scale->fmt_out.video.p_palette )
805 *p_scale->fmt_out.video.p_palette =
806 *p_region->fmt.p_palette;
808 vout_CopyPicture( p_spu, &p_region->p_cache->picture,
809 &p_region->picture );
811 p_scale->fmt_out.video.i_width = i_dst_width;
812 p_scale->fmt_out.video.i_height = i_dst_height;
814 p_scale->fmt_out.video.i_visible_width =
815 spu_scale_w( p_region->fmt.i_visible_width, scale_size );
816 p_scale->fmt_out.video.i_visible_height =
817 spu_scale_h( p_region->fmt.i_visible_height, scale_size );
819 p_region->p_cache->fmt = p_scale->fmt_out.video;
820 p_region->p_cache->i_x = spu_scale_w( p_region->i_x, scale_size );
821 p_region->p_cache->i_y = spu_scale_h( p_region->i_y, scale_size );
822 p_region->p_cache->i_align = p_region->i_align;
823 p_region->p_cache->i_alpha = p_region->i_alpha;
826 if( p_scale->p_module )
827 p_pic = p_scale->pf_video_filter( p_scale, &p_region->p_cache->picture );
829 msg_Err( p_spu, "scaling failed (module not loaded)" );
833 p_region->p_cache->picture = *p_pic;
838 p_subpic->pf_destroy_region( VLC_OBJECT(p_spu),
840 p_region->p_cache = NULL;
844 /* And use the scaled picture */
845 if( p_region->p_cache )
847 p_region = p_region->p_cache;
848 fmt_original = p_region->fmt;
853 SpuRegionPlace( &i_x_offset, &i_y_offset,
854 p_fmt, p_subpic, p_region );
856 if( p_spu->i_margin != 0 && !b_force_crop )
859 int i_low = i_y_offset - p_spu->i_margin;
860 int i_high = i_low + p_region->fmt.i_height;
862 /* crop extra margin to keep within bounds */
865 if( i_high > (int)p_fmt->i_height )
866 i_diff = i_high - p_fmt->i_height;
867 i_y_offset -= p_spu->i_margin + i_diff;
870 /* Force cropping if requested */
873 video_format_t *p_fmt = &p_region->fmt;
874 int i_crop_x = spu_scale_w( p_spu->i_crop_x, scale_size );
875 int i_crop_y = spu_scale_h( p_spu->i_crop_y, scale_size );
876 int i_crop_width = spu_scale_w( p_spu->i_crop_width, scale_size );
877 int i_crop_height= spu_scale_h( p_spu->i_crop_height,scale_size );
879 /* Find the intersection */
880 if( i_crop_x + i_crop_width <= i_x_offset ||
881 i_x_offset + (int)p_fmt->i_visible_width < i_crop_x ||
882 i_crop_y + i_crop_height <= i_y_offset ||
883 i_y_offset + (int)p_fmt->i_visible_height < i_crop_y )
885 /* No intersection */
886 p_fmt->i_visible_width = p_fmt->i_visible_height = 0;
890 int i_x, i_y, i_x_end, i_y_end;
891 i_x = __MAX( i_crop_x, i_x_offset );
892 i_y = __MAX( i_crop_y, i_y_offset );
893 i_x_end = __MIN( i_crop_x + i_crop_width,
894 i_x_offset + (int)p_fmt->i_visible_width );
895 i_y_end = __MIN( i_crop_y + i_crop_height,
896 i_y_offset + (int)p_fmt->i_visible_height );
898 p_fmt->i_x_offset = i_x - i_x_offset;
899 p_fmt->i_y_offset = i_y - i_y_offset;
900 p_fmt->i_visible_width = i_x_end - i_x;
901 p_fmt->i_visible_height = i_y_end - i_y;
906 b_restore_format = true;
909 i_x_offset = __MAX( i_x_offset, 0 );
910 i_y_offset = __MAX( i_y_offset, 0 );
912 /* Compute alpha blend value */
914 if( p_subpic->b_fade )
916 mtime_t i_fade_start = ( p_subpic->i_stop +
917 p_subpic->i_start ) / 2;
918 mtime_t i_now = mdate();
919 if( i_now >= i_fade_start && p_subpic->i_stop > i_fade_start )
921 i_fade_alpha = 255 * ( p_subpic->i_stop - i_now ) /
922 ( p_subpic->i_stop - i_fade_start );
926 /* Update the blender */
927 SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, &p_region->fmt );
929 if( p_spu->p_blend->p_module )
931 p_spu->p_blend->pf_video_blend( p_spu->p_blend, p_pic_dst,
932 &p_region->picture, i_x_offset, i_y_offset,
933 i_fade_alpha * p_subpic->i_alpha * p_region->i_alpha / 65025 );
937 msg_Err( p_spu, "blending %4.4s to %4.4s failed",
938 (char *)&p_spu->p_blend->fmt_out.video.i_chroma,
939 (char *)&p_spu->p_blend->fmt_out.video.i_chroma );
943 if( b_rerender_text )
945 /* Some forms of subtitles need to be re-rendered more than
946 * once, eg. karaoke. We therefore restore the region to its
947 * pre-rendered state, so the next time through everything is
950 p_region->picture.pf_release( &p_region->picture );
951 memset( &p_region->picture, 0, sizeof( picture_t ) );
952 p_region->i_align &= ~SUBPICTURE_RENDERED;
954 if( b_restore_format )
955 p_region->fmt = fmt_original;
958 void spu_RenderSubpictures( spu_t *p_spu, video_format_t *p_fmt_a,
959 picture_t *p_pic_dst,
960 subpicture_t *p_subpic_list,
961 int i_scale_width_orig, int i_scale_height_orig )
963 video_format_t fmt = *p_fmt_a, *p_fmt = &fmt;
964 const mtime_t i_current_date = mdate();
965 int i_source_video_width;
966 int i_source_video_height;
967 subpicture_t *p_subpic;
968 spu_scale_t scale_size_org;
971 vlc_mutex_lock( &p_spu->subpicture_lock );
973 /* Be sure we have at least 1 picture to process */
974 if( !p_subpic_list || p_subpic_list->i_status == FREE_SUBPICTURE )
976 vlc_mutex_unlock( &p_spu->subpicture_lock );
980 scale_size_org = spu_scale_create( i_scale_width_orig, i_scale_height_orig );
982 i_source_video_width = p_fmt->i_width * SCALE_UNIT / scale_size_org.w;
983 i_source_video_height = p_fmt->i_height * SCALE_UNIT / scale_size_org.h;
986 for( p_subpic = p_subpic_list;
987 p_subpic != NULL && p_subpic->i_status != FREE_SUBPICTURE; /* Check again status (as we where unlocked) */
988 p_subpic = p_subpic->p_next )
991 if( p_subpic->pf_pre_render )
992 p_subpic->pf_pre_render( p_fmt, p_spu, p_subpic );
994 if( p_subpic->pf_update_regions )
996 /* TODO do not reverse the scaling that was done before calling
997 * spu_RenderSubpictures, just pass it along (or do it inside
998 * spu_RenderSubpictures) */
999 video_format_t fmt_org = *p_fmt;
1001 fmt_org.i_visible_width = i_source_video_width;
1003 fmt_org.i_visible_height = i_source_video_height;
1005 p_subpic->pf_update_regions( &fmt_org, p_spu, p_subpic, i_current_date );
1009 /* Create the blending module */
1010 if( !p_spu->p_blend )
1011 SpuRenderCreateBlend( p_spu, p_fmt->i_chroma, p_fmt->i_aspect );
1014 for( p_subpic = p_subpic_list; ; p_subpic = p_subpic->p_next )
1016 subpicture_region_t *p_region;
1018 if( !p_subpic || p_subpic->i_status == FREE_SUBPICTURE )
1021 if( !p_subpic->p_region )
1024 /* FIXME when possible use a better rendering size than source size
1025 * (max of display size and source size for example) FIXME */
1026 int i_render_width = p_subpic->i_original_picture_width;
1027 int i_render_height = p_subpic->i_original_picture_height;
1028 if( !i_render_width || !i_render_height )
1030 if( i_render_width != 0 || i_render_height != 0 )
1031 msg_Err( p_spu, "unsupported original picture size %dx%d",
1032 i_render_width, i_render_height );
1034 i_render_width = i_source_video_width;
1035 i_render_height = i_source_video_height;
1040 p_spu->p_text->fmt_out.video.i_width =
1041 p_spu->p_text->fmt_out.video.i_visible_width = i_render_width;
1043 p_spu->p_text->fmt_out.video.i_height =
1044 p_spu->p_text->fmt_out.video.i_visible_height = i_render_height;
1047 /* Compute scaling from picture to source size */
1048 spu_scale_t scale = spu_scale_createq( i_source_video_width, i_render_width,
1049 i_source_video_height, i_render_height );
1051 /* Update scaling from source size to display size(p_fmt) */
1052 scale.w = scale.w * p_fmt->i_width / i_source_video_width;
1053 scale.h = scale.h * p_fmt->i_height / i_source_video_height;
1055 /* Set default subpicture aspect ratio
1056 * FIXME if we only handle 1 aspect ratio per picture, why is it set per
1058 p_region = p_subpic->p_region;
1059 if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
1061 if( p_region->fmt.i_aspect != 0 )
1063 p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
1064 p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
1068 p_region->fmt.i_sar_den = p_fmt->i_sar_den;
1069 p_region->fmt.i_sar_num = p_fmt->i_sar_num;
1073 /* Take care of the aspect ratio */
1074 if( p_region->fmt.i_sar_num * p_fmt->i_sar_den !=
1075 p_region->fmt.i_sar_den * p_fmt->i_sar_num )
1077 /* FIXME FIXME what about region->i_x/i_y ? */
1079 (int64_t)p_region->fmt.i_sar_num * p_fmt->i_sar_den /
1080 p_region->fmt.i_sar_den / p_fmt->i_sar_num;
1083 /* Render all regions */
1084 for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
1086 /* Check scale validity */
1087 if( scale.w <= 0 || scale.h <= 0 )
1091 SpuRenderRegion( p_spu, p_pic_dst, p_subpic, p_region,
1096 vlc_mutex_unlock( &p_spu->subpicture_lock );
1099 /*****************************************************************************
1100 * spu_SortSubpictures: find the subpictures to display
1101 *****************************************************************************
1102 * This function parses all subpictures and decides which ones need to be
1103 * displayed. This operation does not need lock, since only READY_SUBPICTURE
1104 * are handled. If no picture has been selected, display_date will depend on
1106 * We also check for ephemer DVD subpictures (subpictures that have
1107 * to be removed if a newer one is available), which makes it a lot
1108 * more difficult to guess if a subpicture has to be rendered or not.
1109 *****************************************************************************/
1110 subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
1111 bool b_paused, bool b_subtitle_only )
1114 subpicture_t *p_subpic = NULL;
1116 /* Run subpicture filters */
1117 filter_chain_SubFilter( p_spu->p_chain, display_date );
1119 /* We get an easily parsable chained list of subpictures which
1120 * ends with NULL since p_subpic was initialized to NULL. */
1121 for( i_channel = 0; i_channel < p_spu->i_channel; i_channel++ )
1123 subpicture_t *p_ephemer = NULL;
1124 mtime_t ephemer_date = 0;
1127 for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1129 subpicture_t *p_current = &p_spu->p_subpicture[i_index];
1131 if( p_current->i_channel != i_channel ||
1132 p_current->i_status != READY_SUBPICTURE ||
1133 ( b_subtitle_only && !p_current->b_subtitle ) )
1138 display_date < p_current->i_start )
1140 /* Too early, come back next monday */
1144 if( p_current->i_start > ephemer_date )
1145 ephemer_date = p_current->i_start;
1147 if( display_date > p_current->i_stop &&
1148 ( !p_current->b_ephemer || p_current->i_stop > p_current->i_start ) &&
1149 !( p_current->b_subtitle && b_paused ) ) /* XXX Assume that subtitle are pausable */
1151 /* Too late, destroy the subpic */
1152 spu_DestroySubpicture( p_spu, &p_spu->p_subpicture[i_index] );
1156 /* If this is an ephemer subpic, add it to our list */
1157 if( p_current->b_ephemer )
1159 p_current->p_next = p_ephemer;
1160 p_ephemer = p_current;
1165 p_current->p_next = p_subpic;
1166 p_subpic = p_current;
1169 /* If we found ephemer subpictures, check if they have to be
1170 * displayed or destroyed */
1171 while( p_ephemer != NULL )
1173 subpicture_t *p_tmp = p_ephemer;
1174 p_ephemer = p_ephemer->p_next;
1176 if( p_tmp->i_start < ephemer_date )
1178 /* Ephemer subpicture has lived too long */
1179 spu_DestroySubpicture( p_spu, p_tmp );
1183 /* Ephemer subpicture can still live a bit */
1184 p_tmp->p_next = p_subpic;
1193 /*****************************************************************************
1194 * SpuClearChannel: clear an spu channel
1195 *****************************************************************************
1196 * This function destroys the subpictures which belong to the spu channel
1197 * corresponding to i_channel_id.
1198 *****************************************************************************/
1199 static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
1201 int i_subpic; /* subpicture index */
1202 subpicture_t *p_subpic = NULL; /* first free subpicture */
1205 vlc_mutex_lock( &p_spu->subpicture_lock );
1207 for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
1209 p_subpic = &p_spu->p_subpicture[i_subpic];
1210 if( p_subpic->i_status == FREE_SUBPICTURE
1211 || ( p_subpic->i_status != RESERVED_SUBPICTURE
1212 && p_subpic->i_status != READY_SUBPICTURE ) )
1217 if( p_subpic->i_channel == i_channel )
1219 while( p_subpic->p_region )
1221 subpicture_region_t *p_region = p_subpic->p_region;
1222 p_subpic->p_region = p_region->p_next;
1223 spu_DestroyRegion( p_spu, p_region );
1226 if( p_subpic->pf_destroy ) p_subpic->pf_destroy( p_subpic );
1227 p_subpic->i_status = FREE_SUBPICTURE;
1232 vlc_mutex_unlock( &p_spu->subpicture_lock );
1235 /*****************************************************************************
1236 * spu_ControlDefault: default methods for the subpicture unit control.
1237 *****************************************************************************/
1238 static int spu_vaControlDefault( spu_t *p_spu, int i_query, va_list args )
1244 case SPU_CHANNEL_REGISTER:
1245 pi = (int *)va_arg( args, int * );
1246 vlc_mutex_lock( &p_spu->subpicture_lock );
1248 *pi = p_spu->i_channel++;
1249 vlc_mutex_unlock( &p_spu->subpicture_lock );
1252 case SPU_CHANNEL_CLEAR:
1253 i = (int)va_arg( args, int );
1254 SpuClearChannel( p_spu, i, false );
1258 msg_Dbg( p_spu, "control query not supported" );
1259 return VLC_EGENERIC;
1265 /*****************************************************************************
1266 * Object variables callbacks
1267 *****************************************************************************/
1269 /*****************************************************************************
1270 * UpdateSPU: update subpicture settings
1271 *****************************************************************************
1272 * This function is called from CropCallback and at initialization time, to
1273 * retrieve crop information from the input.
1274 *****************************************************************************/
1275 static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
1279 vlc_mutex_lock( &p_spu->subpicture_lock );
1281 p_spu->b_force_palette = false;
1282 p_spu->b_force_crop = false;
1284 if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
1286 vlc_mutex_unlock( &p_spu->subpicture_lock );
1290 p_spu->b_force_crop = true;
1291 var_Get( p_object, "x-start", &val );
1292 p_spu->i_crop_x = val.i_int;
1293 var_Get( p_object, "y-start", &val );
1294 p_spu->i_crop_y = val.i_int;
1295 var_Get( p_object, "x-end", &val );
1296 p_spu->i_crop_width = val.i_int - p_spu->i_crop_x;
1297 var_Get( p_object, "y-end", &val );
1298 p_spu->i_crop_height = val.i_int - p_spu->i_crop_y;
1300 if( var_Get( p_object, "menu-palette", &val ) == VLC_SUCCESS )
1302 memcpy( p_spu->palette, val.p_address, 16 );
1303 p_spu->b_force_palette = true;
1305 vlc_mutex_unlock( &p_spu->subpicture_lock );
1307 msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
1308 p_spu->i_crop_x, p_spu->i_crop_y,
1309 p_spu->i_crop_width, p_spu->i_crop_height,
1310 p_spu->b_force_palette );
1313 /*****************************************************************************
1314 * CropCallback: called when the highlight properties are changed
1315 *****************************************************************************
1316 * This callback is called from the input thread when we need cropping
1317 *****************************************************************************/
1318 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
1319 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1321 (void)psz_var; (void)oldval; (void)newval;
1322 UpdateSPU( (spu_t *)p_data, p_object );
1326 /*****************************************************************************
1327 * Buffers allocation callbacks for the filters
1328 *****************************************************************************/
1329 static subpicture_t *sub_new_buffer( filter_t *p_filter )
1331 filter_owner_sys_t *p_sys = p_filter->p_owner;
1332 subpicture_t *p_subpicture = spu_CreateSubpicture( p_sys->p_spu );
1333 if( p_subpicture ) p_subpicture->i_channel = p_sys->i_channel;
1334 return p_subpicture;
1337 static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1339 filter_owner_sys_t *p_sys = p_filter->p_owner;
1340 spu_DestroySubpicture( p_sys->p_spu, p_subpic );
1343 static subpicture_t *spu_new_buffer( filter_t *p_filter )
1346 subpicture_t *p_subpic = (subpicture_t *)malloc(sizeof(subpicture_t));
1347 if( !p_subpic ) return NULL;
1348 memset( p_subpic, 0, sizeof(subpicture_t) );
1349 p_subpic->b_absolute = true;
1351 p_subpic->pf_create_region = __spu_CreateRegion;
1352 p_subpic->pf_destroy_region = __spu_DestroyRegion;
1357 static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
1359 while( p_subpic->p_region )
1361 subpicture_region_t *p_region = p_subpic->p_region;
1362 p_subpic->p_region = p_region->p_next;
1363 p_subpic->pf_destroy_region( VLC_OBJECT(p_filter), p_region );
1369 static picture_t *spu_new_video_buffer( filter_t *p_filter )
1371 picture_t *p_picture = malloc( sizeof(picture_t) );
1372 if( !p_picture ) return NULL;
1373 if( vout_AllocatePicture( p_filter, p_picture,
1374 p_filter->fmt_out.video.i_chroma,
1375 p_filter->fmt_out.video.i_width,
1376 p_filter->fmt_out.video.i_height,
1377 p_filter->fmt_out.video.i_aspect )
1384 p_picture->pf_release = RegionPictureRelease;
1389 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_pic )
1394 free( p_pic->p_data_orig );
1399 static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
1400 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1402 VLC_UNUSED(p_object); VLC_UNUSED(oldval);
1403 VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1405 spu_t *p_spu = (spu_t *)p_data;
1406 vlc_mutex_lock( &p_spu->subpicture_lock );
1407 filter_chain_Reset( p_spu->p_chain, NULL, NULL );
1408 spu_ParseChain( p_spu );
1409 vlc_mutex_unlock( &p_spu->subpicture_lock );
1413 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
1415 spu_t *p_spu = (spu_t *)p_data;
1417 p_filter->pf_sub_buffer_new = sub_new_buffer;
1418 p_filter->pf_sub_buffer_del = sub_del_buffer;
1420 filter_owner_sys_t *p_sys = malloc( sizeof(filter_owner_sys_t) );
1421 if( !p_sys ) return VLC_EGENERIC;
1423 p_filter->p_owner = p_sys;
1424 spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
1425 p_sys->p_spu = p_spu;
1430 static void SubFilterAllocationClean( filter_t *p_filter )
1432 filter_owner_sys_t *p_sys = p_filter->p_owner;
1433 SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
1434 free( p_filter->p_owner );