1 /*****************************************************************************
2 * logo.c : logo video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2003-2004 VideoLAN
7 * Authors: Gildas Bazin <gbazin@videolan.org>
8 * Simon Latapie <garf@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
36 #include "vlc_filter.h"
37 #include "filter_common.h"
39 /*****************************************************************************
41 *****************************************************************************/
42 static int Create ( vlc_object_t * );
43 static void Destroy ( vlc_object_t * );
45 static int Init ( vout_thread_t * );
46 static void End ( vout_thread_t * );
47 static void Render ( vout_thread_t *, picture_t * );
49 static int SendEvents( vlc_object_t *, char const *,
50 vlc_value_t, vlc_value_t, void * );
51 static int MouseEvent ( vlc_object_t *, char const *,
52 vlc_value_t , vlc_value_t , void * );
53 static int Control ( vout_thread_t *, int, va_list );
55 static int CreateFilter ( vlc_object_t * );
56 static void DestroyFilter( vlc_object_t * );
58 static int LogoCallback( vlc_object_t *, char const *,
59 vlc_value_t, vlc_value_t, void * );
61 /*****************************************************************************
63 *****************************************************************************/
64 #define FILE_TEXT N_("Logo filename")
65 #define FILE_LONGTEXT N_("Full path of the PNG file to use.")
66 #define POSX_TEXT N_("X coordinate of the logo")
67 #define POSX_LONGTEXT N_("You can move the logo by left-clicking on it." )
68 #define POSY_TEXT N_("Y coordinate of the logo")
69 #define POSY_LONGTEXT N_("You can move the logo by left-clicking on it." )
70 #define TRANS_TEXT N_("Transparency of the logo")
71 #define TRANS_LONGTEXT N_("You can set the logo transparency value here " \
72 "(from 0 for full transparency to 255 for full opacity)." )
73 #define POS_TEXT N_("Logo position")
74 #define POS_LONGTEXT N_( \
75 "You can enforce the logo position on the video " \
76 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
77 "also use combinations of these values).")
79 static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
80 static char *ppsz_pos_descriptions[] =
81 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
82 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
85 set_description( _("Logo video filter") );
86 set_capability( "video filter", 0 );
87 add_shortcut( "logo" );
88 set_callbacks( Create, Destroy );
90 add_file( "logo-file", NULL, NULL, FILE_TEXT, FILE_LONGTEXT, VLC_FALSE );
91 add_integer( "logo-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
92 add_integer( "logo-y", -1, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
93 add_integer_with_range( "logo-transparency", 255, 0, 255, NULL,
94 TRANS_TEXT, TRANS_LONGTEXT, VLC_FALSE );
95 add_integer( "logo-position", 6, NULL, POS_TEXT, POS_LONGTEXT, VLC_TRUE );
96 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
98 /* subpicture filter submodule */
100 set_capability( "sub filter", 0 );
101 set_callbacks( CreateFilter, DestroyFilter );
102 set_description( _("Logo sub filter") );
103 add_shortcut( "logo" );
106 /*****************************************************************************
107 * LoadPNG: loads the PNG logo into memory
108 *****************************************************************************/
109 static picture_t *LoadPNG( vlc_object_t *p_this, char *psz_filename,
115 vlc_bool_t b_alpha = VLC_TRUE;
117 png_uint_32 i_width, i_height;
118 int i_color_type, i_interlace_type, i_compression_type, i_filter_type;
120 png_bytep *p_row_pointers;
122 png_infop p_info, p_end_info;
124 if( !(file = fopen( psz_filename , "rb" )) )
126 msg_Err( p_this, "logo file (%s) not found", psz_filename );
130 p_png = png_create_read_struct( PNG_LIBPNG_VER_STRING, 0, 0, 0 );
131 p_info = png_create_info_struct( p_png );
132 p_end_info = png_create_info_struct( p_png );
133 png_init_io( p_png, file );
134 png_read_info( p_png, p_info );
135 png_get_IHDR( p_png, p_info, &i_width, &i_height,
136 &i_bit_depth, &i_color_type, &i_interlace_type,
137 &i_compression_type, &i_filter_type);
139 if( i_color_type == PNG_COLOR_TYPE_PALETTE )
140 png_set_palette_to_rgb( p_png );
142 if( i_color_type == PNG_COLOR_TYPE_GRAY ||
143 i_color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
144 png_set_gray_to_rgb( p_png );
146 if( png_get_valid( p_png, p_info, PNG_INFO_tRNS ) )
148 png_set_tRNS_to_alpha( p_png );
150 else if( !(i_color_type & PNG_COLOR_MASK_ALPHA) )
155 p_row_pointers = malloc( sizeof(png_bytep) * i_height );
156 for( i = 0; i < (int)i_height; i++ )
157 p_row_pointers[i] = malloc( 4 * ( i_bit_depth + 7 ) / 8 * i_width );
159 png_read_image( p_png, p_row_pointers );
160 png_read_end( p_png, p_end_info );
163 png_destroy_read_struct( &p_png, &p_info, &p_end_info );
165 /* Convert to YUVA */
166 p_pic = malloc( sizeof(picture_t) );
167 if( vout_AllocatePicture( p_this, p_pic, VLC_FOURCC('Y','U','V','A'),
168 i_width, i_height, VOUT_ASPECT_FACTOR ) !=
171 for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
172 free( p_row_pointers );
176 for( j = 0; j < (int)i_height ; j++ )
178 uint8_t *p = (uint8_t *)p_row_pointers[j];
180 for( i = 0; i < (int)i_width ; i++ )
182 int i_offset = i + j * p_pic->p[Y_PLANE].i_pitch;
184 p_pic->p[Y_PLANE].p_pixels[i_offset] =
185 (p[0] * 257L + p[1] * 504 + p[2] * 98)/1000 + 16;
186 p_pic->p[U_PLANE].p_pixels[i_offset] =
187 (p[2] * 439L - p[0] * 148 - p[1] * 291)/1000 + 128;
188 p_pic->p[V_PLANE].p_pixels[i_offset] =
189 (p[0] * 439L - p[1] * 368 - p[2] * 71)/1000 + 128;
190 p_pic->p[A_PLANE].p_pixels[i_offset] =
191 b_alpha ? (p[3] * i_trans) / 255 : i_trans;
193 p += (b_alpha ? 4 : 3);
197 for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
198 free( p_row_pointers );
202 /*****************************************************************************
203 * vout_sys_t: logo video output method descriptor
204 *****************************************************************************
205 * This structure is part of the video output thread descriptor.
206 * It describes the Invert specific properties of an output thread.
207 *****************************************************************************/
210 vout_thread_t *p_vout;
215 int i_width, i_height;
221 /*****************************************************************************
222 * Create: allocates logo video thread output method
223 *****************************************************************************/
224 static int Create( vlc_object_t *p_this )
226 vout_thread_t *p_vout = (vout_thread_t *)p_this;
230 /* Allocate structure */
231 p_sys = p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
234 msg_Err( p_vout, "out of memory" );
238 p_vout->pf_init = Init;
239 p_vout->pf_end = End;
240 p_vout->pf_manage = NULL;
241 p_vout->pf_render = Render;
242 p_vout->pf_display = NULL;
243 p_vout->pf_control = Control;
245 p_sys->psz_filename = var_CreateGetString( p_this , "logo-file" );
246 if( !p_sys->psz_filename || !*p_sys->psz_filename )
248 msg_Err( p_this, "logo file not specified" );
252 var_Create( p_this, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
253 var_Get( p_this, "logo-position", &val );
254 p_sys->pos = val.i_int;
255 var_Create( p_this, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
256 var_Get( p_this, "logo-x", &val );
257 p_sys->posx = val.i_int;
258 var_Create( p_this, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
259 var_Get( p_this, "logo-y", &val );
260 p_sys->posy = val.i_int;
261 var_Create(p_this, "logo-transparency", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT);
262 var_Get( p_this, "logo-transparency", &val );
263 p_sys->i_trans = __MAX( __MIN( val.i_int, 255 ), 0 );
265 p_sys->p_pic = LoadPNG( p_this, p_sys->psz_filename, p_sys->i_trans );
272 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
273 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
278 /*****************************************************************************
279 * Init: initialize logo video thread output method
280 *****************************************************************************/
281 static int Init( vout_thread_t *p_vout )
283 vout_sys_t *p_sys = p_vout->p_sys;
287 I_OUTPUTPICTURES = 0;
289 /* Initialize the output structure */
290 p_vout->output.i_chroma = p_vout->render.i_chroma;
291 p_vout->output.i_width = p_vout->render.i_width;
292 p_vout->output.i_height = p_vout->render.i_height;
293 p_vout->output.i_aspect = p_vout->render.i_aspect;
295 /* Load the video blending filter */
296 p_sys->p_blend = vlc_object_create( p_vout, sizeof(filter_t) );
297 vlc_object_attach( p_sys->p_blend, p_vout );
298 p_sys->p_blend->fmt_out.video.i_x_offset =
299 p_sys->p_blend->fmt_out.video.i_y_offset = 0;
300 p_sys->p_blend->fmt_in.video.i_x_offset =
301 p_sys->p_blend->fmt_in.video.i_y_offset = 0;
302 p_sys->p_blend->fmt_out.video.i_aspect = p_vout->render.i_aspect;
303 p_sys->p_blend->fmt_out.video.i_chroma = p_vout->output.i_chroma;
304 p_sys->p_blend->fmt_in.video.i_chroma = VLC_FOURCC('Y','U','V','A');
305 p_sys->p_blend->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR;
306 p_sys->p_blend->fmt_in.video.i_width =
307 p_sys->p_blend->fmt_in.video.i_visible_width =
308 p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
309 p_sys->p_blend->fmt_in.video.i_height =
310 p_sys->p_blend->fmt_in.video.i_visible_height =
311 p_sys->p_pic->p[Y_PLANE].i_visible_lines;
312 p_sys->p_blend->fmt_out.video.i_width =
313 p_sys->p_blend->fmt_out.video.i_visible_width =
314 p_vout->output.i_width;
315 p_sys->p_blend->fmt_out.video.i_height =
316 p_sys->p_blend->fmt_out.video.i_visible_height =
317 p_vout->output.i_height;
319 p_sys->p_blend->p_module =
320 module_Need( p_sys->p_blend, "video blending", 0, 0 );
321 if( !p_sys->p_blend->p_module )
323 msg_Err( p_vout, "can't open blending filter, aborting" );
324 vlc_object_detach( p_sys->p_blend );
325 vlc_object_destroy( p_sys->p_blend );
329 if( p_sys->posx < 0 || p_sys->posy < 0 )
331 p_sys->posx = 0; p_sys->posy = 0;
333 if( p_sys->pos & SUBPICTURE_ALIGN_BOTTOM )
335 p_sys->posy = p_vout->render.i_height - p_sys->i_height;
337 else if ( !(p_sys->pos & SUBPICTURE_ALIGN_TOP) )
339 p_sys->posy = p_vout->render.i_height / 2 - p_sys->i_height / 2;
342 if( p_sys->pos & SUBPICTURE_ALIGN_RIGHT )
344 p_sys->posx = p_vout->render.i_width - p_sys->i_width;
346 else if ( !(p_sys->pos & SUBPICTURE_ALIGN_LEFT) )
348 p_sys->posx = p_vout->render.i_width / 2 - p_sys->i_width / 2;
352 /* Try to open the real video output */
353 msg_Dbg( p_vout, "spawning the real video output" );
356 vout_Create( p_vout, p_vout->render.i_width, p_vout->render.i_height,
357 p_vout->render.i_chroma, p_vout->render.i_aspect );
359 /* Everything failed */
360 if( p_sys->p_vout == NULL )
362 msg_Err( p_vout, "can't open vout, aborting" );
366 var_AddCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
367 var_AddCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
369 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
370 ADD_CALLBACKS( p_sys->p_vout, SendEvents );
371 ADD_PARENT_CALLBACKS( SendEventsToChild );
376 /*****************************************************************************
377 * End: terminate logo video thread output method
378 *****************************************************************************/
379 static void End( vout_thread_t *p_vout )
381 vout_sys_t *p_sys = p_vout->p_sys;
384 /* Free the fake output buffers we allocated */
385 for( i_index = I_OUTPUTPICTURES ; i_index ; )
388 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
391 var_DelCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
392 var_DelCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
396 DEL_CALLBACKS( p_sys->p_vout, SendEvents );
397 vlc_object_detach( p_sys->p_vout );
398 vout_Destroy( p_sys->p_vout );
401 if( p_sys->p_blend->p_module )
402 module_Unneed( p_sys->p_blend, p_sys->p_blend->p_module );
403 vlc_object_detach( p_sys->p_blend );
404 vlc_object_destroy( p_sys->p_blend );
407 /*****************************************************************************
408 * Destroy: destroy logo video thread output method
409 *****************************************************************************/
410 static void Destroy( vlc_object_t *p_this )
412 vout_thread_t *p_vout = (vout_thread_t *)p_this;
413 vout_sys_t *p_sys = p_vout->p_sys;
415 DEL_PARENT_CALLBACKS( SendEventsToChild );
417 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
418 free( p_sys->p_pic->p_data_orig );
419 if( p_sys->p_pic ) free( p_sys->p_pic );
424 /*****************************************************************************
425 * Render: render the logo onto the video
426 *****************************************************************************/
427 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
429 vout_sys_t *p_sys = p_vout->p_sys;
432 /* This is a new frame. Get a structure from the video_output. */
433 while( !(p_outpic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 )) )
435 if( p_vout->b_die || p_vout->b_error ) return;
436 msleep( VOUT_OUTMEM_SLEEP );
439 vout_CopyPicture( p_vout, p_outpic, p_pic );
440 vout_DatePicture( p_sys->p_vout, p_outpic, p_pic->date );
442 p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_outpic, p_outpic,
443 p_sys->p_pic, p_sys->posx, p_sys->posy,
446 vout_DisplayPicture( p_sys->p_vout, p_outpic );
449 /*****************************************************************************
450 * SendEvents: forward mouse and keyboard events to the parent p_vout
451 *****************************************************************************/
452 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
453 vlc_value_t oldval, vlc_value_t newval, void *p_data )
455 var_Set( (vlc_object_t *)p_data, psz_var, newval );
459 /*****************************************************************************
460 * MouseEvent: callback for mouse events
461 *****************************************************************************/
462 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
463 vlc_value_t oldval, vlc_value_t newval, void *p_data )
465 vout_thread_t *p_vout = (vout_thread_t*)p_data;
466 vout_sys_t *p_sys = p_vout->p_sys;
470 var_Get( p_vout->p_sys->p_vout, "mouse-button-down", &valb );
472 i_delta = newval.i_int - oldval.i_int;
474 if( (valb.i_int & 0x1) == 0 )
479 if( psz_var[6] == 'x' )
482 var_Get( p_vout->p_sys->p_vout, "mouse-y", &valy );
483 if( newval.i_int >= (int)p_sys->posx &&
484 valy.i_int >= (int)p_sys->posy &&
485 newval.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
486 valy.i_int <= (int)(p_sys->posy + p_sys->i_height) )
488 p_sys->posx = __MIN( __MAX( p_sys->posx + i_delta, 0 ),
489 p_vout->output.i_width - p_sys->i_width );
492 else if( psz_var[6] == 'y' )
495 var_Get( p_vout->p_sys->p_vout, "mouse-x", &valx );
496 if( valx.i_int >= (int)p_sys->posx &&
497 newval.i_int >= (int)p_sys->posy &&
498 valx.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
499 newval.i_int <= (int)(p_sys->posy + p_sys->i_height) )
501 p_sys->posy = __MIN( __MAX( p_sys->posy + i_delta, 0 ),
502 p_vout->output.i_height - p_sys->i_height );
509 /*****************************************************************************
510 * Control: control facility for the vout (forwards to child vout)
511 *****************************************************************************/
512 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
514 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
517 /*****************************************************************************
518 * SendEventsToChild: forward events to the child/children vout
519 *****************************************************************************/
520 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
521 vlc_value_t oldval, vlc_value_t newval, void *p_data )
523 vout_thread_t *p_vout = (vout_thread_t *)p_this;
524 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
528 /*****************************************************************************
529 * filter_sys_t: logo filter descriptor
530 *****************************************************************************/
535 int i_width, i_height;
540 vlc_bool_t b_absolute;
544 /* On the fly control variable */
545 vlc_bool_t b_need_update;
546 vlc_bool_t b_new_png;
549 static subpicture_t *Filter( filter_t *, mtime_t );
551 /*****************************************************************************
552 * CreateFilter: allocates logo video filter
553 *****************************************************************************/
554 static int CreateFilter( vlc_object_t *p_this )
556 filter_t *p_filter = (filter_t *)p_this;
558 vlc_object_t *p_input;
560 /* Allocate structure */
561 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
564 msg_Err( p_filter, "out of memory" );
568 /* Hook used for callback variables */
569 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
576 p_sys->psz_filename = var_CreateGetString( p_input->p_libvlc , "logo-file" );
577 if( !p_sys->psz_filename || !*p_sys->psz_filename )
579 msg_Err( p_this, "logo file not specified" );
580 vlc_object_release( p_input );
585 p_sys->posx = var_CreateGetInteger( p_input->p_libvlc , "logo-x" );
586 p_sys->posy = var_CreateGetInteger( p_input->p_libvlc , "logo-y" );
587 p_sys->pos = var_CreateGetInteger( p_input->p_libvlc , "logo-position" );
588 p_sys->i_trans = var_CreateGetInteger( p_input->p_libvlc, "logo-transparency");
589 p_sys->i_trans = __MAX( __MIN( p_sys->i_trans, 255 ), 0 );
591 var_AddCallback( p_input->p_libvlc, "logo-file", LogoCallback, p_sys );
592 var_AddCallback( p_input->p_libvlc, "logo-x", LogoCallback, p_sys );
593 var_AddCallback( p_input->p_libvlc, "logo-y", LogoCallback, p_sys );
594 var_AddCallback( p_input->p_libvlc, "logo-position", LogoCallback, p_sys );
595 var_AddCallback( p_input->p_libvlc, "logo-transparency", LogoCallback, p_sys );
596 vlc_object_release( p_input );
598 p_sys->b_absolute = VLC_TRUE;
599 if( p_sys->posx < 0 || p_sys->posy < 0 )
601 p_sys->b_absolute = VLC_FALSE;
602 p_sys->posx = 0; p_sys->posy = 0;
605 p_sys->p_pic = LoadPNG( p_this, p_sys->psz_filename, p_sys->i_trans );
613 p_filter->pf_sub_filter = Filter;
614 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
615 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
616 p_sys->b_need_update = VLC_TRUE;
617 p_sys->b_new_png = VLC_FALSE;
618 p_sys->i_last_date = 0;
623 /*****************************************************************************
624 * DestroyFilter: destroy logo video filter
625 *****************************************************************************/
626 static void DestroyFilter( vlc_object_t *p_this )
628 filter_t *p_filter = (filter_t *)p_this;
629 filter_sys_t *p_sys = p_filter->p_sys;
630 vlc_object_t *p_input;
632 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
633 free( p_sys->p_pic->p_data_orig );
634 if( p_sys->p_pic ) free( p_sys->p_pic );
638 /* Delete the logo variables from INPUT */
639 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
640 if( !p_input ) return;
642 var_Destroy( p_input->p_libvlc , "logo-file" );
643 var_Destroy( p_input->p_libvlc , "logo-x" );
644 var_Destroy( p_input->p_libvlc , "logo-y" );
645 var_Destroy( p_input->p_libvlc , "logo-position" );
646 var_Destroy( p_input->p_libvlc , "logo-transparency" );
647 vlc_object_release( p_input );
650 /*****************************************************************************
651 * Filter: the whole thing
652 *****************************************************************************
653 * This function outputs subpictures at regular time intervals.
654 *****************************************************************************/
655 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
657 filter_sys_t *p_sys = p_filter->p_sys;
659 subpicture_region_t *p_region;
662 if( !p_sys->b_need_update && p_sys->i_last_date +5000000 > date ) return 0;
664 if( p_sys->b_new_png )
666 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
667 free( p_sys->p_pic->p_data_orig );
668 if( p_sys->p_pic ) free( p_sys->p_pic );
670 p_sys->p_pic = LoadPNG( VLC_OBJECT(p_filter), p_sys->psz_filename,
674 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
675 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
678 p_sys->b_new_png = VLC_FALSE;
681 p_sys->b_need_update = VLC_FALSE;
683 /* Allocate the subpicture internal data. */
684 p_spu = p_filter->pf_sub_buffer_new( p_filter );
685 if( !p_spu ) return NULL;
687 p_spu->b_absolute = p_sys->b_absolute;
688 p_spu->i_start = p_sys->i_last_date = date;
690 p_spu->b_ephemer = VLC_TRUE;
692 p_sys->b_need_update = VLC_FALSE;
694 if( !p_sys->p_pic || !p_sys->i_trans )
696 /* Send an empty subpicture to clear the display */
700 /* Create new SPU region */
701 memset( &fmt, 0, sizeof(video_format_t) );
702 fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
703 fmt.i_aspect = VOUT_ASPECT_FACTOR;
704 fmt.i_sar_num = fmt.i_sar_den = 1;
705 fmt.i_width = fmt.i_visible_width = p_sys->i_width;
706 fmt.i_height = fmt.i_visible_height = p_sys->i_height;
707 fmt.i_x_offset = fmt.i_y_offset = 0;
708 p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
711 msg_Err( p_filter, "cannot allocate SPU region" );
712 p_filter->pf_sub_buffer_del( p_filter, p_spu );
716 vout_CopyPicture( p_filter, &p_region->picture, p_sys->p_pic );
719 p_spu->i_x = p_sys->posx;
720 p_spu->i_y = p_sys->posy;
721 p_spu->i_flags = p_sys->pos;
722 p_spu->p_region = p_region;
727 /*****************************************************************************
728 * Callback to update params on the fly
729 *****************************************************************************/
730 static int LogoCallback( vlc_object_t *p_this, char const *psz_var,
731 vlc_value_t oldval, vlc_value_t newval, void *p_data )
733 filter_sys_t *p_sys = (filter_sys_t *)p_data;
735 if( !strncmp( psz_var, "logo-file", 6 ) )
737 if( p_sys->psz_filename ) free( p_sys->psz_filename );
738 p_sys->psz_filename = strdup( newval.psz_string );
739 p_sys->b_new_png = VLC_TRUE;
741 else if ( !strncmp( psz_var, "logo-x", 6 ) )
743 p_sys->posx = newval.i_int;
745 else if ( !strncmp( psz_var, "logo-y", 6 ) )
747 p_sys->posy = newval.i_int;
749 else if ( !strncmp( psz_var, "logo-position", 12 ) )
751 p_sys->pos = newval.i_int;
753 else if ( !strncmp( psz_var, "logo-transparency", 9 ) )
755 p_sys->i_trans = __MAX( __MIN( newval.i_int, 255 ), 0 );
756 p_sys->b_new_png = VLC_TRUE;
758 p_sys->b_need_update = VLC_TRUE;