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 set_shortname( N_("Logo overlay") );
88 set_category( CAT_VIDEO );
89 set_subcategory( SUBCAT_VIDEO_VFILTER );
90 add_shortcut( "logo" );
91 set_callbacks( Create, Destroy );
93 add_file( "logo-file", NULL, NULL, FILE_TEXT, FILE_LONGTEXT, VLC_FALSE );
94 add_integer( "logo-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
95 add_integer( "logo-y", -1, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
96 add_integer_with_range( "logo-transparency", 255, 0, 255, NULL,
97 TRANS_TEXT, TRANS_LONGTEXT, VLC_FALSE );
98 add_integer( "logo-position", 6, NULL, POS_TEXT, POS_LONGTEXT, VLC_TRUE );
99 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
101 /* subpicture filter submodule */
103 set_capability( "sub filter", 0 );
104 set_callbacks( CreateFilter, DestroyFilter );
105 set_description( _("Logo sub filter") );
106 add_shortcut( "logo" );
109 /*****************************************************************************
110 * LoadPNG: loads the PNG logo into memory
111 *****************************************************************************/
112 static picture_t *LoadPNG( vlc_object_t *p_this, char *psz_filename,
118 vlc_bool_t b_alpha = VLC_TRUE;
120 png_uint_32 i_width, i_height;
121 int i_color_type, i_interlace_type, i_compression_type, i_filter_type;
123 png_bytep *p_row_pointers;
125 png_infop p_info, p_end_info;
127 if( !(file = fopen( psz_filename , "rb" )) )
129 msg_Err( p_this, "logo file (%s) not found", psz_filename );
133 p_png = png_create_read_struct( PNG_LIBPNG_VER_STRING, 0, 0, 0 );
134 p_info = png_create_info_struct( p_png );
135 p_end_info = png_create_info_struct( p_png );
136 png_init_io( p_png, file );
137 png_read_info( p_png, p_info );
138 png_get_IHDR( p_png, p_info, &i_width, &i_height,
139 &i_bit_depth, &i_color_type, &i_interlace_type,
140 &i_compression_type, &i_filter_type);
142 if( i_color_type == PNG_COLOR_TYPE_PALETTE )
143 png_set_palette_to_rgb( p_png );
145 if( i_color_type == PNG_COLOR_TYPE_GRAY ||
146 i_color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
147 png_set_gray_to_rgb( p_png );
149 if( png_get_valid( p_png, p_info, PNG_INFO_tRNS ) )
151 png_set_tRNS_to_alpha( p_png );
153 else if( !(i_color_type & PNG_COLOR_MASK_ALPHA) )
158 p_row_pointers = malloc( sizeof(png_bytep) * i_height );
159 for( i = 0; i < (int)i_height; i++ )
160 p_row_pointers[i] = malloc( 4 * ( i_bit_depth + 7 ) / 8 * i_width );
162 png_read_image( p_png, p_row_pointers );
163 png_read_end( p_png, p_end_info );
166 png_destroy_read_struct( &p_png, &p_info, &p_end_info );
168 /* Convert to YUVA */
169 p_pic = malloc( sizeof(picture_t) );
170 if( vout_AllocatePicture( p_this, p_pic, VLC_FOURCC('Y','U','V','A'),
171 i_width, i_height, VOUT_ASPECT_FACTOR ) !=
174 for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
175 free( p_row_pointers );
179 for( j = 0; j < (int)i_height ; j++ )
181 uint8_t *p = (uint8_t *)p_row_pointers[j];
183 for( i = 0; i < (int)i_width ; i++ )
185 int i_offset = i + j * p_pic->p[Y_PLANE].i_pitch;
187 p_pic->p[Y_PLANE].p_pixels[i_offset] =
188 (p[0] * 257L + p[1] * 504 + p[2] * 98)/1000 + 16;
189 p_pic->p[U_PLANE].p_pixels[i_offset] =
190 (p[2] * 439L - p[0] * 148 - p[1] * 291)/1000 + 128;
191 p_pic->p[V_PLANE].p_pixels[i_offset] =
192 (p[0] * 439L - p[1] * 368 - p[2] * 71)/1000 + 128;
193 p_pic->p[A_PLANE].p_pixels[i_offset] =
194 b_alpha ? (p[3] * i_trans) / 255 : i_trans;
196 p += (b_alpha ? 4 : 3);
200 for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
201 free( p_row_pointers );
205 /*****************************************************************************
206 * vout_sys_t: logo video output method descriptor
207 *****************************************************************************
208 * This structure is part of the video output thread descriptor.
209 * It describes the Invert specific properties of an output thread.
210 *****************************************************************************/
213 vout_thread_t *p_vout;
218 int i_width, i_height;
224 /*****************************************************************************
225 * Create: allocates logo video thread output method
226 *****************************************************************************/
227 static int Create( vlc_object_t *p_this )
229 vout_thread_t *p_vout = (vout_thread_t *)p_this;
233 /* Allocate structure */
234 p_sys = p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
237 msg_Err( p_vout, "out of memory" );
241 p_vout->pf_init = Init;
242 p_vout->pf_end = End;
243 p_vout->pf_manage = NULL;
244 p_vout->pf_render = Render;
245 p_vout->pf_display = NULL;
246 p_vout->pf_control = Control;
248 p_sys->psz_filename = var_CreateGetString( p_this , "logo-file" );
249 if( !p_sys->psz_filename || !*p_sys->psz_filename )
251 msg_Err( p_this, "logo file not specified" );
255 var_Create( p_this, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
256 var_Get( p_this, "logo-position", &val );
257 p_sys->pos = val.i_int;
258 var_Create( p_this, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
259 var_Get( p_this, "logo-x", &val );
260 p_sys->posx = val.i_int;
261 var_Create( p_this, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
262 var_Get( p_this, "logo-y", &val );
263 p_sys->posy = val.i_int;
264 var_Create(p_this, "logo-transparency", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT);
265 var_Get( p_this, "logo-transparency", &val );
266 p_sys->i_trans = __MAX( __MIN( val.i_int, 255 ), 0 );
268 p_sys->p_pic = LoadPNG( p_this, p_sys->psz_filename, p_sys->i_trans );
275 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
276 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
281 /*****************************************************************************
282 * Init: initialize logo video thread output method
283 *****************************************************************************/
284 static int Init( vout_thread_t *p_vout )
286 vout_sys_t *p_sys = p_vout->p_sys;
290 I_OUTPUTPICTURES = 0;
292 /* Initialize the output structure */
293 p_vout->output.i_chroma = p_vout->render.i_chroma;
294 p_vout->output.i_width = p_vout->render.i_width;
295 p_vout->output.i_height = p_vout->render.i_height;
296 p_vout->output.i_aspect = p_vout->render.i_aspect;
298 /* Load the video blending filter */
299 p_sys->p_blend = vlc_object_create( p_vout, sizeof(filter_t) );
300 vlc_object_attach( p_sys->p_blend, p_vout );
301 p_sys->p_blend->fmt_out.video.i_x_offset =
302 p_sys->p_blend->fmt_out.video.i_y_offset = 0;
303 p_sys->p_blend->fmt_in.video.i_x_offset =
304 p_sys->p_blend->fmt_in.video.i_y_offset = 0;
305 p_sys->p_blend->fmt_out.video.i_aspect = p_vout->render.i_aspect;
306 p_sys->p_blend->fmt_out.video.i_chroma = p_vout->output.i_chroma;
307 p_sys->p_blend->fmt_in.video.i_chroma = VLC_FOURCC('Y','U','V','A');
308 p_sys->p_blend->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR;
309 p_sys->p_blend->fmt_in.video.i_width =
310 p_sys->p_blend->fmt_in.video.i_visible_width =
311 p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
312 p_sys->p_blend->fmt_in.video.i_height =
313 p_sys->p_blend->fmt_in.video.i_visible_height =
314 p_sys->p_pic->p[Y_PLANE].i_visible_lines;
315 p_sys->p_blend->fmt_out.video.i_width =
316 p_sys->p_blend->fmt_out.video.i_visible_width =
317 p_vout->output.i_width;
318 p_sys->p_blend->fmt_out.video.i_height =
319 p_sys->p_blend->fmt_out.video.i_visible_height =
320 p_vout->output.i_height;
322 p_sys->p_blend->p_module =
323 module_Need( p_sys->p_blend, "video blending", 0, 0 );
324 if( !p_sys->p_blend->p_module )
326 msg_Err( p_vout, "can't open blending filter, aborting" );
327 vlc_object_detach( p_sys->p_blend );
328 vlc_object_destroy( p_sys->p_blend );
332 if( p_sys->posx < 0 || p_sys->posy < 0 )
334 p_sys->posx = 0; p_sys->posy = 0;
336 if( p_sys->pos & SUBPICTURE_ALIGN_BOTTOM )
338 p_sys->posy = p_vout->render.i_height - p_sys->i_height;
340 else if ( !(p_sys->pos & SUBPICTURE_ALIGN_TOP) )
342 p_sys->posy = p_vout->render.i_height / 2 - p_sys->i_height / 2;
345 if( p_sys->pos & SUBPICTURE_ALIGN_RIGHT )
347 p_sys->posx = p_vout->render.i_width - p_sys->i_width;
349 else if ( !(p_sys->pos & SUBPICTURE_ALIGN_LEFT) )
351 p_sys->posx = p_vout->render.i_width / 2 - p_sys->i_width / 2;
355 /* Try to open the real video output */
356 msg_Dbg( p_vout, "spawning the real video output" );
359 vout_Create( p_vout, p_vout->render.i_width, p_vout->render.i_height,
360 p_vout->render.i_chroma, p_vout->render.i_aspect );
362 /* Everything failed */
363 if( p_sys->p_vout == NULL )
365 msg_Err( p_vout, "can't open vout, aborting" );
369 var_AddCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
370 var_AddCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
372 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
373 ADD_CALLBACKS( p_sys->p_vout, SendEvents );
374 ADD_PARENT_CALLBACKS( SendEventsToChild );
379 /*****************************************************************************
380 * End: terminate logo video thread output method
381 *****************************************************************************/
382 static void End( vout_thread_t *p_vout )
384 vout_sys_t *p_sys = p_vout->p_sys;
387 /* Free the fake output buffers we allocated */
388 for( i_index = I_OUTPUTPICTURES ; i_index ; )
391 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
394 var_DelCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
395 var_DelCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
399 DEL_CALLBACKS( p_sys->p_vout, SendEvents );
400 vlc_object_detach( p_sys->p_vout );
401 vout_Destroy( p_sys->p_vout );
404 if( p_sys->p_blend->p_module )
405 module_Unneed( p_sys->p_blend, p_sys->p_blend->p_module );
406 vlc_object_detach( p_sys->p_blend );
407 vlc_object_destroy( p_sys->p_blend );
410 /*****************************************************************************
411 * Destroy: destroy logo video thread output method
412 *****************************************************************************/
413 static void Destroy( vlc_object_t *p_this )
415 vout_thread_t *p_vout = (vout_thread_t *)p_this;
416 vout_sys_t *p_sys = p_vout->p_sys;
418 DEL_PARENT_CALLBACKS( SendEventsToChild );
420 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
421 free( p_sys->p_pic->p_data_orig );
422 if( p_sys->p_pic ) free( p_sys->p_pic );
427 /*****************************************************************************
428 * Render: render the logo onto the video
429 *****************************************************************************/
430 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
432 vout_sys_t *p_sys = p_vout->p_sys;
435 /* This is a new frame. Get a structure from the video_output. */
436 while( !(p_outpic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 )) )
438 if( p_vout->b_die || p_vout->b_error ) return;
439 msleep( VOUT_OUTMEM_SLEEP );
442 vout_CopyPicture( p_vout, p_outpic, p_pic );
443 vout_DatePicture( p_sys->p_vout, p_outpic, p_pic->date );
445 p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_outpic, p_outpic,
446 p_sys->p_pic, p_sys->posx, p_sys->posy,
449 vout_DisplayPicture( p_sys->p_vout, p_outpic );
452 /*****************************************************************************
453 * SendEvents: forward mouse and keyboard events to the parent p_vout
454 *****************************************************************************/
455 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
456 vlc_value_t oldval, vlc_value_t newval, void *p_data )
458 var_Set( (vlc_object_t *)p_data, psz_var, newval );
462 /*****************************************************************************
463 * MouseEvent: callback for mouse events
464 *****************************************************************************/
465 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
466 vlc_value_t oldval, vlc_value_t newval, void *p_data )
468 vout_thread_t *p_vout = (vout_thread_t*)p_data;
469 vout_sys_t *p_sys = p_vout->p_sys;
473 var_Get( p_vout->p_sys->p_vout, "mouse-button-down", &valb );
475 i_delta = newval.i_int - oldval.i_int;
477 if( (valb.i_int & 0x1) == 0 )
482 if( psz_var[6] == 'x' )
485 var_Get( p_vout->p_sys->p_vout, "mouse-y", &valy );
486 if( newval.i_int >= (int)p_sys->posx &&
487 valy.i_int >= (int)p_sys->posy &&
488 newval.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
489 valy.i_int <= (int)(p_sys->posy + p_sys->i_height) )
491 p_sys->posx = __MIN( __MAX( p_sys->posx + i_delta, 0 ),
492 p_vout->output.i_width - p_sys->i_width );
495 else if( psz_var[6] == 'y' )
498 var_Get( p_vout->p_sys->p_vout, "mouse-x", &valx );
499 if( valx.i_int >= (int)p_sys->posx &&
500 newval.i_int >= (int)p_sys->posy &&
501 valx.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
502 newval.i_int <= (int)(p_sys->posy + p_sys->i_height) )
504 p_sys->posy = __MIN( __MAX( p_sys->posy + i_delta, 0 ),
505 p_vout->output.i_height - p_sys->i_height );
512 /*****************************************************************************
513 * Control: control facility for the vout (forwards to child vout)
514 *****************************************************************************/
515 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
517 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
520 /*****************************************************************************
521 * SendEventsToChild: forward events to the child/children vout
522 *****************************************************************************/
523 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
524 vlc_value_t oldval, vlc_value_t newval, void *p_data )
526 vout_thread_t *p_vout = (vout_thread_t *)p_this;
527 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
531 /*****************************************************************************
532 * filter_sys_t: logo filter descriptor
533 *****************************************************************************/
538 int i_width, i_height;
543 vlc_bool_t b_absolute;
547 /* On the fly control variable */
548 vlc_bool_t b_need_update;
549 vlc_bool_t b_new_png;
552 static subpicture_t *Filter( filter_t *, mtime_t );
554 /*****************************************************************************
555 * CreateFilter: allocates logo video filter
556 *****************************************************************************/
557 static int CreateFilter( vlc_object_t *p_this )
559 filter_t *p_filter = (filter_t *)p_this;
561 vlc_object_t *p_input;
563 /* Allocate structure */
564 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
567 msg_Err( p_filter, "out of memory" );
571 /* Hook used for callback variables */
572 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
579 p_sys->psz_filename = var_CreateGetString( p_input->p_libvlc , "logo-file" );
580 if( !p_sys->psz_filename || !*p_sys->psz_filename )
582 msg_Err( p_this, "logo file not specified" );
583 vlc_object_release( p_input );
588 p_sys->posx = var_CreateGetInteger( p_input->p_libvlc , "logo-x" );
589 p_sys->posy = var_CreateGetInteger( p_input->p_libvlc , "logo-y" );
590 p_sys->pos = var_CreateGetInteger( p_input->p_libvlc , "logo-position" );
591 p_sys->i_trans = var_CreateGetInteger( p_input->p_libvlc, "logo-transparency");
592 p_sys->i_trans = __MAX( __MIN( p_sys->i_trans, 255 ), 0 );
594 var_AddCallback( p_input->p_libvlc, "logo-file", LogoCallback, p_sys );
595 var_AddCallback( p_input->p_libvlc, "logo-x", LogoCallback, p_sys );
596 var_AddCallback( p_input->p_libvlc, "logo-y", LogoCallback, p_sys );
597 var_AddCallback( p_input->p_libvlc, "logo-position", LogoCallback, p_sys );
598 var_AddCallback( p_input->p_libvlc, "logo-transparency", LogoCallback, p_sys );
599 vlc_object_release( p_input );
601 p_sys->b_absolute = VLC_TRUE;
602 if( p_sys->posx < 0 || p_sys->posy < 0 )
604 p_sys->b_absolute = VLC_FALSE;
605 p_sys->posx = 0; p_sys->posy = 0;
608 p_sys->p_pic = LoadPNG( p_this, p_sys->psz_filename, p_sys->i_trans );
616 p_filter->pf_sub_filter = Filter;
617 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
618 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
619 p_sys->b_need_update = VLC_TRUE;
620 p_sys->b_new_png = VLC_FALSE;
621 p_sys->i_last_date = 0;
626 /*****************************************************************************
627 * DestroyFilter: destroy logo video filter
628 *****************************************************************************/
629 static void DestroyFilter( vlc_object_t *p_this )
631 filter_t *p_filter = (filter_t *)p_this;
632 filter_sys_t *p_sys = p_filter->p_sys;
633 vlc_object_t *p_input;
635 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
636 free( p_sys->p_pic->p_data_orig );
637 if( p_sys->p_pic ) free( p_sys->p_pic );
641 /* Delete the logo variables from INPUT */
642 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
643 if( !p_input ) return;
645 var_Destroy( p_input->p_libvlc , "logo-file" );
646 var_Destroy( p_input->p_libvlc , "logo-x" );
647 var_Destroy( p_input->p_libvlc , "logo-y" );
648 var_Destroy( p_input->p_libvlc , "logo-position" );
649 var_Destroy( p_input->p_libvlc , "logo-transparency" );
650 vlc_object_release( p_input );
653 /*****************************************************************************
654 * Filter: the whole thing
655 *****************************************************************************
656 * This function outputs subpictures at regular time intervals.
657 *****************************************************************************/
658 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
660 filter_sys_t *p_sys = p_filter->p_sys;
662 subpicture_region_t *p_region;
665 if( !p_sys->b_need_update && p_sys->i_last_date +5000000 > date ) return 0;
667 if( p_sys->b_new_png )
669 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
670 free( p_sys->p_pic->p_data_orig );
671 if( p_sys->p_pic ) free( p_sys->p_pic );
673 p_sys->p_pic = LoadPNG( VLC_OBJECT(p_filter), p_sys->psz_filename,
677 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
678 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
681 p_sys->b_new_png = VLC_FALSE;
684 p_sys->b_need_update = VLC_FALSE;
686 /* Allocate the subpicture internal data. */
687 p_spu = p_filter->pf_sub_buffer_new( p_filter );
688 if( !p_spu ) return NULL;
690 p_spu->b_absolute = p_sys->b_absolute;
691 p_spu->i_start = p_sys->i_last_date = date;
693 p_spu->b_ephemer = VLC_TRUE;
695 p_sys->b_need_update = VLC_FALSE;
697 if( !p_sys->p_pic || !p_sys->i_trans )
699 /* Send an empty subpicture to clear the display */
703 /* Create new SPU region */
704 memset( &fmt, 0, sizeof(video_format_t) );
705 fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
706 fmt.i_aspect = VOUT_ASPECT_FACTOR;
707 fmt.i_sar_num = fmt.i_sar_den = 1;
708 fmt.i_width = fmt.i_visible_width = p_sys->i_width;
709 fmt.i_height = fmt.i_visible_height = p_sys->i_height;
710 fmt.i_x_offset = fmt.i_y_offset = 0;
711 p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
714 msg_Err( p_filter, "cannot allocate SPU region" );
715 p_filter->pf_sub_buffer_del( p_filter, p_spu );
719 vout_CopyPicture( p_filter, &p_region->picture, p_sys->p_pic );
722 p_spu->i_x = p_sys->posx;
723 p_spu->i_y = p_sys->posy;
724 p_spu->i_flags = p_sys->pos;
725 p_spu->p_region = p_region;
730 /*****************************************************************************
731 * Callback to update params on the fly
732 *****************************************************************************/
733 static int LogoCallback( vlc_object_t *p_this, char const *psz_var,
734 vlc_value_t oldval, vlc_value_t newval, void *p_data )
736 filter_sys_t *p_sys = (filter_sys_t *)p_data;
738 if( !strncmp( psz_var, "logo-file", 6 ) )
740 if( p_sys->psz_filename ) free( p_sys->psz_filename );
741 p_sys->psz_filename = strdup( newval.psz_string );
742 p_sys->b_new_png = VLC_TRUE;
744 else if ( !strncmp( psz_var, "logo-x", 6 ) )
746 p_sys->posx = newval.i_int;
748 else if ( !strncmp( psz_var, "logo-y", 6 ) )
750 p_sys->posy = newval.i_int;
752 else if ( !strncmp( psz_var, "logo-position", 12 ) )
754 p_sys->pos = newval.i_int;
756 else if ( !strncmp( psz_var, "logo-transparency", 9 ) )
758 p_sys->i_trans = __MAX( __MIN( newval.i_int, 255 ), 0 );
759 p_sys->b_new_png = VLC_TRUE;
761 p_sys->b_need_update = VLC_TRUE;