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_category( CAT_VIDEO );
88 set_subcategory( SUBCAT_VIDEO_VFILTER );
89 add_shortcut( "logo" );
90 set_callbacks( Create, Destroy );
92 add_file( "logo-file", NULL, NULL, FILE_TEXT, FILE_LONGTEXT, VLC_FALSE );
93 add_integer( "logo-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
94 add_integer( "logo-y", -1, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
95 add_integer_with_range( "logo-transparency", 255, 0, 255, NULL,
96 TRANS_TEXT, TRANS_LONGTEXT, VLC_FALSE );
97 add_integer( "logo-position", 6, NULL, POS_TEXT, POS_LONGTEXT, VLC_TRUE );
98 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
100 /* subpicture filter submodule */
102 set_capability( "sub filter", 0 );
103 set_callbacks( CreateFilter, DestroyFilter );
104 set_description( _("Logo sub filter") );
105 add_shortcut( "logo" );
108 /*****************************************************************************
109 * LoadPNG: loads the PNG logo into memory
110 *****************************************************************************/
111 static picture_t *LoadPNG( vlc_object_t *p_this, char *psz_filename,
117 vlc_bool_t b_alpha = VLC_TRUE;
119 png_uint_32 i_width, i_height;
120 int i_color_type, i_interlace_type, i_compression_type, i_filter_type;
122 png_bytep *p_row_pointers;
124 png_infop p_info, p_end_info;
126 if( !(file = fopen( psz_filename , "rb" )) )
128 msg_Err( p_this, "logo file (%s) not found", psz_filename );
132 p_png = png_create_read_struct( PNG_LIBPNG_VER_STRING, 0, 0, 0 );
133 p_info = png_create_info_struct( p_png );
134 p_end_info = png_create_info_struct( p_png );
135 png_init_io( p_png, file );
136 png_read_info( p_png, p_info );
137 png_get_IHDR( p_png, p_info, &i_width, &i_height,
138 &i_bit_depth, &i_color_type, &i_interlace_type,
139 &i_compression_type, &i_filter_type);
141 if( i_color_type == PNG_COLOR_TYPE_PALETTE )
142 png_set_palette_to_rgb( p_png );
144 if( i_color_type == PNG_COLOR_TYPE_GRAY ||
145 i_color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
146 png_set_gray_to_rgb( p_png );
148 if( png_get_valid( p_png, p_info, PNG_INFO_tRNS ) )
150 png_set_tRNS_to_alpha( p_png );
152 else if( !(i_color_type & PNG_COLOR_MASK_ALPHA) )
157 p_row_pointers = malloc( sizeof(png_bytep) * i_height );
158 for( i = 0; i < (int)i_height; i++ )
159 p_row_pointers[i] = malloc( 4 * ( i_bit_depth + 7 ) / 8 * i_width );
161 png_read_image( p_png, p_row_pointers );
162 png_read_end( p_png, p_end_info );
165 png_destroy_read_struct( &p_png, &p_info, &p_end_info );
167 /* Convert to YUVA */
168 p_pic = malloc( sizeof(picture_t) );
169 if( vout_AllocatePicture( p_this, p_pic, VLC_FOURCC('Y','U','V','A'),
170 i_width, i_height, VOUT_ASPECT_FACTOR ) !=
173 for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
174 free( p_row_pointers );
178 for( j = 0; j < (int)i_height ; j++ )
180 uint8_t *p = (uint8_t *)p_row_pointers[j];
182 for( i = 0; i < (int)i_width ; i++ )
184 int i_offset = i + j * p_pic->p[Y_PLANE].i_pitch;
186 p_pic->p[Y_PLANE].p_pixels[i_offset] =
187 (p[0] * 257L + p[1] * 504 + p[2] * 98)/1000 + 16;
188 p_pic->p[U_PLANE].p_pixels[i_offset] =
189 (p[2] * 439L - p[0] * 148 - p[1] * 291)/1000 + 128;
190 p_pic->p[V_PLANE].p_pixels[i_offset] =
191 (p[0] * 439L - p[1] * 368 - p[2] * 71)/1000 + 128;
192 p_pic->p[A_PLANE].p_pixels[i_offset] =
193 b_alpha ? (p[3] * i_trans) / 255 : i_trans;
195 p += (b_alpha ? 4 : 3);
199 for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
200 free( p_row_pointers );
204 /*****************************************************************************
205 * vout_sys_t: logo video output method descriptor
206 *****************************************************************************
207 * This structure is part of the video output thread descriptor.
208 * It describes the Invert specific properties of an output thread.
209 *****************************************************************************/
212 vout_thread_t *p_vout;
217 int i_width, i_height;
223 /*****************************************************************************
224 * Create: allocates logo video thread output method
225 *****************************************************************************/
226 static int Create( vlc_object_t *p_this )
228 vout_thread_t *p_vout = (vout_thread_t *)p_this;
232 /* Allocate structure */
233 p_sys = p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
236 msg_Err( p_vout, "out of memory" );
240 p_vout->pf_init = Init;
241 p_vout->pf_end = End;
242 p_vout->pf_manage = NULL;
243 p_vout->pf_render = Render;
244 p_vout->pf_display = NULL;
245 p_vout->pf_control = Control;
247 p_sys->psz_filename = var_CreateGetString( p_this , "logo-file" );
248 if( !p_sys->psz_filename || !*p_sys->psz_filename )
250 msg_Err( p_this, "logo file not specified" );
254 var_Create( p_this, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
255 var_Get( p_this, "logo-position", &val );
256 p_sys->pos = val.i_int;
257 var_Create( p_this, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
258 var_Get( p_this, "logo-x", &val );
259 p_sys->posx = val.i_int;
260 var_Create( p_this, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
261 var_Get( p_this, "logo-y", &val );
262 p_sys->posy = val.i_int;
263 var_Create(p_this, "logo-transparency", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT);
264 var_Get( p_this, "logo-transparency", &val );
265 p_sys->i_trans = __MAX( __MIN( val.i_int, 255 ), 0 );
267 p_sys->p_pic = LoadPNG( p_this, p_sys->psz_filename, p_sys->i_trans );
274 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
275 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
280 /*****************************************************************************
281 * Init: initialize logo video thread output method
282 *****************************************************************************/
283 static int Init( vout_thread_t *p_vout )
285 vout_sys_t *p_sys = p_vout->p_sys;
289 I_OUTPUTPICTURES = 0;
291 /* Initialize the output structure */
292 p_vout->output.i_chroma = p_vout->render.i_chroma;
293 p_vout->output.i_width = p_vout->render.i_width;
294 p_vout->output.i_height = p_vout->render.i_height;
295 p_vout->output.i_aspect = p_vout->render.i_aspect;
297 /* Load the video blending filter */
298 p_sys->p_blend = vlc_object_create( p_vout, sizeof(filter_t) );
299 vlc_object_attach( p_sys->p_blend, p_vout );
300 p_sys->p_blend->fmt_out.video.i_x_offset =
301 p_sys->p_blend->fmt_out.video.i_y_offset = 0;
302 p_sys->p_blend->fmt_in.video.i_x_offset =
303 p_sys->p_blend->fmt_in.video.i_y_offset = 0;
304 p_sys->p_blend->fmt_out.video.i_aspect = p_vout->render.i_aspect;
305 p_sys->p_blend->fmt_out.video.i_chroma = p_vout->output.i_chroma;
306 p_sys->p_blend->fmt_in.video.i_chroma = VLC_FOURCC('Y','U','V','A');
307 p_sys->p_blend->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR;
308 p_sys->p_blend->fmt_in.video.i_width =
309 p_sys->p_blend->fmt_in.video.i_visible_width =
310 p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
311 p_sys->p_blend->fmt_in.video.i_height =
312 p_sys->p_blend->fmt_in.video.i_visible_height =
313 p_sys->p_pic->p[Y_PLANE].i_visible_lines;
314 p_sys->p_blend->fmt_out.video.i_width =
315 p_sys->p_blend->fmt_out.video.i_visible_width =
316 p_vout->output.i_width;
317 p_sys->p_blend->fmt_out.video.i_height =
318 p_sys->p_blend->fmt_out.video.i_visible_height =
319 p_vout->output.i_height;
321 p_sys->p_blend->p_module =
322 module_Need( p_sys->p_blend, "video blending", 0, 0 );
323 if( !p_sys->p_blend->p_module )
325 msg_Err( p_vout, "can't open blending filter, aborting" );
326 vlc_object_detach( p_sys->p_blend );
327 vlc_object_destroy( p_sys->p_blend );
331 if( p_sys->posx < 0 || p_sys->posy < 0 )
333 p_sys->posx = 0; p_sys->posy = 0;
335 if( p_sys->pos & SUBPICTURE_ALIGN_BOTTOM )
337 p_sys->posy = p_vout->render.i_height - p_sys->i_height;
339 else if ( !(p_sys->pos & SUBPICTURE_ALIGN_TOP) )
341 p_sys->posy = p_vout->render.i_height / 2 - p_sys->i_height / 2;
344 if( p_sys->pos & SUBPICTURE_ALIGN_RIGHT )
346 p_sys->posx = p_vout->render.i_width - p_sys->i_width;
348 else if ( !(p_sys->pos & SUBPICTURE_ALIGN_LEFT) )
350 p_sys->posx = p_vout->render.i_width / 2 - p_sys->i_width / 2;
354 /* Try to open the real video output */
355 msg_Dbg( p_vout, "spawning the real video output" );
358 vout_Create( p_vout, p_vout->render.i_width, p_vout->render.i_height,
359 p_vout->render.i_chroma, p_vout->render.i_aspect );
361 /* Everything failed */
362 if( p_sys->p_vout == NULL )
364 msg_Err( p_vout, "can't open vout, aborting" );
368 var_AddCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
369 var_AddCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
371 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
372 ADD_CALLBACKS( p_sys->p_vout, SendEvents );
373 ADD_PARENT_CALLBACKS( SendEventsToChild );
378 /*****************************************************************************
379 * End: terminate logo video thread output method
380 *****************************************************************************/
381 static void End( vout_thread_t *p_vout )
383 vout_sys_t *p_sys = p_vout->p_sys;
386 /* Free the fake output buffers we allocated */
387 for( i_index = I_OUTPUTPICTURES ; i_index ; )
390 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
393 var_DelCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
394 var_DelCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
398 DEL_CALLBACKS( p_sys->p_vout, SendEvents );
399 vlc_object_detach( p_sys->p_vout );
400 vout_Destroy( p_sys->p_vout );
403 if( p_sys->p_blend->p_module )
404 module_Unneed( p_sys->p_blend, p_sys->p_blend->p_module );
405 vlc_object_detach( p_sys->p_blend );
406 vlc_object_destroy( p_sys->p_blend );
409 /*****************************************************************************
410 * Destroy: destroy logo video thread output method
411 *****************************************************************************/
412 static void Destroy( vlc_object_t *p_this )
414 vout_thread_t *p_vout = (vout_thread_t *)p_this;
415 vout_sys_t *p_sys = p_vout->p_sys;
417 DEL_PARENT_CALLBACKS( SendEventsToChild );
419 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
420 free( p_sys->p_pic->p_data_orig );
421 if( p_sys->p_pic ) free( p_sys->p_pic );
426 /*****************************************************************************
427 * Render: render the logo onto the video
428 *****************************************************************************/
429 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
431 vout_sys_t *p_sys = p_vout->p_sys;
434 /* This is a new frame. Get a structure from the video_output. */
435 while( !(p_outpic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 )) )
437 if( p_vout->b_die || p_vout->b_error ) return;
438 msleep( VOUT_OUTMEM_SLEEP );
441 vout_CopyPicture( p_vout, p_outpic, p_pic );
442 vout_DatePicture( p_sys->p_vout, p_outpic, p_pic->date );
444 p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_outpic, p_outpic,
445 p_sys->p_pic, p_sys->posx, p_sys->posy,
448 vout_DisplayPicture( p_sys->p_vout, p_outpic );
451 /*****************************************************************************
452 * SendEvents: forward mouse and keyboard events to the parent p_vout
453 *****************************************************************************/
454 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
455 vlc_value_t oldval, vlc_value_t newval, void *p_data )
457 var_Set( (vlc_object_t *)p_data, psz_var, newval );
461 /*****************************************************************************
462 * MouseEvent: callback for mouse events
463 *****************************************************************************/
464 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
465 vlc_value_t oldval, vlc_value_t newval, void *p_data )
467 vout_thread_t *p_vout = (vout_thread_t*)p_data;
468 vout_sys_t *p_sys = p_vout->p_sys;
472 var_Get( p_vout->p_sys->p_vout, "mouse-button-down", &valb );
474 i_delta = newval.i_int - oldval.i_int;
476 if( (valb.i_int & 0x1) == 0 )
481 if( psz_var[6] == 'x' )
484 var_Get( p_vout->p_sys->p_vout, "mouse-y", &valy );
485 if( newval.i_int >= (int)p_sys->posx &&
486 valy.i_int >= (int)p_sys->posy &&
487 newval.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
488 valy.i_int <= (int)(p_sys->posy + p_sys->i_height) )
490 p_sys->posx = __MIN( __MAX( p_sys->posx + i_delta, 0 ),
491 p_vout->output.i_width - p_sys->i_width );
494 else if( psz_var[6] == 'y' )
497 var_Get( p_vout->p_sys->p_vout, "mouse-x", &valx );
498 if( valx.i_int >= (int)p_sys->posx &&
499 newval.i_int >= (int)p_sys->posy &&
500 valx.i_int <= (int)(p_sys->posx + p_sys->i_width) &&
501 newval.i_int <= (int)(p_sys->posy + p_sys->i_height) )
503 p_sys->posy = __MIN( __MAX( p_sys->posy + i_delta, 0 ),
504 p_vout->output.i_height - p_sys->i_height );
511 /*****************************************************************************
512 * Control: control facility for the vout (forwards to child vout)
513 *****************************************************************************/
514 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
516 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
519 /*****************************************************************************
520 * SendEventsToChild: forward events to the child/children vout
521 *****************************************************************************/
522 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
523 vlc_value_t oldval, vlc_value_t newval, void *p_data )
525 vout_thread_t *p_vout = (vout_thread_t *)p_this;
526 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
530 /*****************************************************************************
531 * filter_sys_t: logo filter descriptor
532 *****************************************************************************/
537 int i_width, i_height;
542 vlc_bool_t b_absolute;
546 /* On the fly control variable */
547 vlc_bool_t b_need_update;
548 vlc_bool_t b_new_png;
551 static subpicture_t *Filter( filter_t *, mtime_t );
553 /*****************************************************************************
554 * CreateFilter: allocates logo video filter
555 *****************************************************************************/
556 static int CreateFilter( vlc_object_t *p_this )
558 filter_t *p_filter = (filter_t *)p_this;
560 vlc_object_t *p_input;
562 /* Allocate structure */
563 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
566 msg_Err( p_filter, "out of memory" );
570 /* Hook used for callback variables */
571 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
578 p_sys->psz_filename = var_CreateGetString( p_input->p_libvlc , "logo-file" );
579 if( !p_sys->psz_filename || !*p_sys->psz_filename )
581 msg_Err( p_this, "logo file not specified" );
582 vlc_object_release( p_input );
587 p_sys->posx = var_CreateGetInteger( p_input->p_libvlc , "logo-x" );
588 p_sys->posy = var_CreateGetInteger( p_input->p_libvlc , "logo-y" );
589 p_sys->pos = var_CreateGetInteger( p_input->p_libvlc , "logo-position" );
590 p_sys->i_trans = var_CreateGetInteger( p_input->p_libvlc, "logo-transparency");
591 p_sys->i_trans = __MAX( __MIN( p_sys->i_trans, 255 ), 0 );
593 var_AddCallback( p_input->p_libvlc, "logo-file", LogoCallback, p_sys );
594 var_AddCallback( p_input->p_libvlc, "logo-x", LogoCallback, p_sys );
595 var_AddCallback( p_input->p_libvlc, "logo-y", LogoCallback, p_sys );
596 var_AddCallback( p_input->p_libvlc, "logo-position", LogoCallback, p_sys );
597 var_AddCallback( p_input->p_libvlc, "logo-transparency", LogoCallback, p_sys );
598 vlc_object_release( p_input );
600 p_sys->b_absolute = VLC_TRUE;
601 if( p_sys->posx < 0 || p_sys->posy < 0 )
603 p_sys->b_absolute = VLC_FALSE;
604 p_sys->posx = 0; p_sys->posy = 0;
607 p_sys->p_pic = LoadPNG( p_this, p_sys->psz_filename, p_sys->i_trans );
615 p_filter->pf_sub_filter = Filter;
616 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
617 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
618 p_sys->b_need_update = VLC_TRUE;
619 p_sys->b_new_png = VLC_FALSE;
620 p_sys->i_last_date = 0;
625 /*****************************************************************************
626 * DestroyFilter: destroy logo video filter
627 *****************************************************************************/
628 static void DestroyFilter( vlc_object_t *p_this )
630 filter_t *p_filter = (filter_t *)p_this;
631 filter_sys_t *p_sys = p_filter->p_sys;
632 vlc_object_t *p_input;
634 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
635 free( p_sys->p_pic->p_data_orig );
636 if( p_sys->p_pic ) free( p_sys->p_pic );
640 /* Delete the logo variables from INPUT */
641 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
642 if( !p_input ) return;
644 var_Destroy( p_input->p_libvlc , "logo-file" );
645 var_Destroy( p_input->p_libvlc , "logo-x" );
646 var_Destroy( p_input->p_libvlc , "logo-y" );
647 var_Destroy( p_input->p_libvlc , "logo-position" );
648 var_Destroy( p_input->p_libvlc , "logo-transparency" );
649 vlc_object_release( p_input );
652 /*****************************************************************************
653 * Filter: the whole thing
654 *****************************************************************************
655 * This function outputs subpictures at regular time intervals.
656 *****************************************************************************/
657 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
659 filter_sys_t *p_sys = p_filter->p_sys;
661 subpicture_region_t *p_region;
664 if( !p_sys->b_need_update && p_sys->i_last_date +5000000 > date ) return 0;
666 if( p_sys->b_new_png )
668 if( p_sys->p_pic && p_sys->p_pic->p_data_orig )
669 free( p_sys->p_pic->p_data_orig );
670 if( p_sys->p_pic ) free( p_sys->p_pic );
672 p_sys->p_pic = LoadPNG( VLC_OBJECT(p_filter), p_sys->psz_filename,
676 p_sys->i_width = p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
677 p_sys->i_height = p_sys->p_pic->p[Y_PLANE].i_visible_lines;
680 p_sys->b_new_png = VLC_FALSE;
683 p_sys->b_need_update = VLC_FALSE;
685 /* Allocate the subpicture internal data. */
686 p_spu = p_filter->pf_sub_buffer_new( p_filter );
687 if( !p_spu ) return NULL;
689 p_spu->b_absolute = p_sys->b_absolute;
690 p_spu->i_start = p_sys->i_last_date = date;
692 p_spu->b_ephemer = VLC_TRUE;
694 p_sys->b_need_update = VLC_FALSE;
696 if( !p_sys->p_pic || !p_sys->i_trans )
698 /* Send an empty subpicture to clear the display */
702 /* Create new SPU region */
703 memset( &fmt, 0, sizeof(video_format_t) );
704 fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
705 fmt.i_aspect = VOUT_ASPECT_FACTOR;
706 fmt.i_sar_num = fmt.i_sar_den = 1;
707 fmt.i_width = fmt.i_visible_width = p_sys->i_width;
708 fmt.i_height = fmt.i_visible_height = p_sys->i_height;
709 fmt.i_x_offset = fmt.i_y_offset = 0;
710 p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
713 msg_Err( p_filter, "cannot allocate SPU region" );
714 p_filter->pf_sub_buffer_del( p_filter, p_spu );
718 vout_CopyPicture( p_filter, &p_region->picture, p_sys->p_pic );
721 p_spu->i_x = p_sys->posx;
722 p_spu->i_y = p_sys->posy;
723 p_spu->i_flags = p_sys->pos;
724 p_spu->p_region = p_region;
729 /*****************************************************************************
730 * Callback to update params on the fly
731 *****************************************************************************/
732 static int LogoCallback( vlc_object_t *p_this, char const *psz_var,
733 vlc_value_t oldval, vlc_value_t newval, void *p_data )
735 filter_sys_t *p_sys = (filter_sys_t *)p_data;
737 if( !strncmp( psz_var, "logo-file", 6 ) )
739 if( p_sys->psz_filename ) free( p_sys->psz_filename );
740 p_sys->psz_filename = strdup( newval.psz_string );
741 p_sys->b_new_png = VLC_TRUE;
743 else if ( !strncmp( psz_var, "logo-x", 6 ) )
745 p_sys->posx = newval.i_int;
747 else if ( !strncmp( psz_var, "logo-y", 6 ) )
749 p_sys->posy = newval.i_int;
751 else if ( !strncmp( psz_var, "logo-position", 12 ) )
753 p_sys->pos = newval.i_int;
755 else if ( !strncmp( psz_var, "logo-transparency", 9 ) )
757 p_sys->i_trans = __MAX( __MIN( newval.i_int, 255 ), 0 );
758 p_sys->b_new_png = VLC_TRUE;
760 p_sys->b_need_update = VLC_TRUE;