2 * producer_pango.c -- a pango-based titler
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <framework/mlt_producer.h>
22 #include <framework/mlt_frame.h>
23 #include <framework/mlt_geometry.h>
26 #include <gdk-pixbuf/gdk-pixbuf.h>
27 #include <pango/pangoft2.h>
28 #include <freetype/freetype.h>
33 typedef struct producer_pango_s *producer_pango;
42 static pthread_mutex_t pango_mutex = PTHREAD_MUTEX_INITIALIZER;
44 struct producer_pango_s
46 struct mlt_producer_s parent;
62 // special color type used by internal pango routines
68 // Forward declarations
69 static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
70 static void producer_close( mlt_producer parent );
71 static void pango_draw_background( GdkPixbuf *pixbuf, rgba_color bg );
72 static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const char *font,
73 rgba_color fg, rgba_color bg, rgba_color ol, int pad, int align, int weight, int size, int outline );
74 static void fill_pixbuf( GdkPixbuf* pixbuf, FT_Bitmap* bitmap, int w, int h, int pad, int align, rgba_color fg, rgba_color bg );
75 static void fill_pixbuf_with_outline( GdkPixbuf* pixbuf, FT_Bitmap* bitmap, int w, int h, int pad, int align, rgba_color fg, rgba_color bg, rgba_color ol, int outline );
77 /** Return nonzero if the two strings are equal, ignoring case, up to
78 the first n characters.
80 int strncaseeq(const char *s1, const char *s2, size_t n)
84 if (tolower(*s1++) != tolower(*s2++))
90 /** Parse the alignment property.
93 static int alignment_parse( char* align )
95 int ret = pango_align_left;
98 else if ( isdigit( align[ 0 ] ) )
100 else if ( align[ 0 ] == 'c' || align[ 0 ] == 'm' )
101 ret = pango_align_center;
102 else if ( align[ 0 ] == 'r' )
103 ret = pango_align_right;
108 static PangoFT2FontMap *fontmap = NULL;
110 mlt_producer producer_pango_init( const char *filename )
112 producer_pango this = calloc( sizeof( struct producer_pango_s ), 1 );
113 if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
115 mlt_producer producer = &this->parent;
117 pthread_mutex_lock( &pango_mutex );
118 if ( fontmap == NULL )
119 fontmap = (PangoFT2FontMap*) pango_ft2_font_map_new();
121 pthread_mutex_unlock( &pango_mutex );
123 producer->get_frame = producer_get_frame;
124 producer->close = ( mlt_destructor )producer_close;
126 // Get the properties interface
127 mlt_properties properties = MLT_PRODUCER_PROPERTIES( &this->parent );
129 // Set the default properties
130 mlt_properties_set( properties, "fgcolour", "0xffffffff" );
131 mlt_properties_set( properties, "bgcolour", "0x00000000" );
132 mlt_properties_set( properties, "olcolour", "0x00000000" );
133 mlt_properties_set_int( properties, "align", pango_align_left );
134 mlt_properties_set_int( properties, "pad", 0 );
135 mlt_properties_set_int( properties, "outline", 0 );
136 mlt_properties_set( properties, "text", "" );
137 mlt_properties_set( properties, "font", "Sans 48" );
138 mlt_properties_set( properties, "encoding", "UTF-8" );
139 mlt_properties_set_int( properties, "weight", PANGO_WEIGHT_NORMAL );
141 if ( filename == NULL || ( filename && ( !strcmp( filename, "" )
142 // workaround for old kdenlive countdown generator
143 || strstr( filename, "<producer>" ) ) ) )
145 mlt_properties_set( properties, "markup", "" );
147 else if ( filename[ 0 ] == '+' || strstr( filename, "/+" ) )
149 char *copy = strdup( filename + 1 );
151 if ( strstr( markup, "/+" ) )
152 markup = strstr( markup, "/+" ) + 2;
153 ( *strrchr( markup, '.' ) ) = '\0';
154 while ( strchr( markup, '~' ) )
155 ( *strchr( markup, '~' ) ) = '\n';
156 mlt_properties_set( properties, "resource", filename );
157 mlt_properties_set( properties, "markup", markup );
160 else if ( strstr( filename, ".mpl" ) )
163 mlt_properties contents = mlt_properties_load( filename );
164 mlt_geometry key_frames = mlt_geometry_init( );
165 struct mlt_geometry_item_s item;
166 mlt_properties_set( properties, "resource", filename );
167 mlt_properties_set_data( properties, "contents", contents, 0, ( mlt_destructor )mlt_properties_close, NULL );
168 mlt_properties_set_data( properties, "key_frames", key_frames, 0, ( mlt_destructor )mlt_geometry_close, NULL );
170 // Make sure we have at least one entry
171 if ( mlt_properties_get( contents, "0" ) == NULL )
172 mlt_properties_set( contents, "0", "" );
174 for ( i = 0; i < mlt_properties_count( contents ); i ++ )
176 char *name = mlt_properties_get_name( contents, i );
177 char *value = mlt_properties_get_value( contents, i );
178 while ( value != NULL && strchr( value, '~' ) )
179 ( *strchr( value, '~' ) ) = '\n';
180 item.frame = atoi( name );
181 mlt_geometry_insert( key_frames, &item );
183 mlt_geometry_interpolate( key_frames );
187 FILE *f = fopen( filename, "r" );
195 while ( fgets( line, 80, f ) )
197 size += strlen( line ) + 1;
200 markup = realloc( markup, size );
201 strcat( markup, line );
205 markup = strdup( line );
210 if ( markup[ strlen( markup ) - 1 ] == '\n' )
211 markup[ strlen( markup ) - 1 ] = '\0';
213 mlt_properties_set( properties, "resource", filename );
214 mlt_properties_set( properties, "markup", ( markup == NULL ? "" : markup ) );
219 producer->close = NULL;
220 mlt_producer_close( producer );
232 static void set_string( char **string, const char *value, const char *fallback )
237 *string = strdup( value );
239 else if ( *string == NULL && fallback != NULL )
241 *string = strdup( fallback );
243 else if ( *string != NULL && fallback == NULL )
250 rgba_color parse_color( char *color, unsigned int color_int )
252 rgba_color result = { 0xff, 0xff, 0xff, 0xff };
254 if ( !strcmp( color, "red" ) )
260 else if ( !strcmp( color, "green" ) )
266 else if ( !strcmp( color, "blue" ) )
272 else if ( strcmp( color, "white" ) )
274 result.r = ( color_int >> 24 ) & 0xff;
275 result.g = ( color_int >> 16 ) & 0xff;
276 result.b = ( color_int >> 8 ) & 0xff;
277 result.a = ( color_int ) & 0xff;
283 /** Convert a string property to UTF-8
285 static int iconv_utf8( mlt_properties properties, const char *prop_name, const char* encoding )
287 char *text = mlt_properties_get( properties, prop_name );
290 iconv_t cd = iconv_open( "UTF-8", encoding );
291 if ( cd != ( iconv_t )-1 )
293 char *inbuf_p = text;
294 size_t inbuf_n = strlen( text );
295 size_t outbuf_n = inbuf_n * 6;
296 char *outbuf = mlt_pool_alloc( outbuf_n );
297 char *outbuf_p = outbuf;
299 memset( outbuf, 0, outbuf_n );
301 if ( text != NULL && strcmp( text, "" ) && iconv( cd, &inbuf_p, &inbuf_n, &outbuf_p, &outbuf_n ) != -1 )
302 mlt_properties_set( properties, prop_name, outbuf );
304 mlt_properties_set( properties, prop_name, "" );
306 mlt_pool_release( outbuf );
313 static void refresh_image( mlt_frame frame, int width, int height )
316 GdkPixbuf *pixbuf = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", NULL );
318 // Obtain properties of frame
319 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
321 // Obtain the producer pango for this frame
322 producer_pango this = mlt_properties_get_data( properties, "producer_pango", NULL );
324 // Obtain the producer
325 mlt_producer producer = &this->parent;
327 // Obtain the producer properties
328 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
330 // Get producer properties
331 char *fg = mlt_properties_get( producer_props, "fgcolour" );
332 char *bg = mlt_properties_get( producer_props, "bgcolour" );
333 char *ol = mlt_properties_get( producer_props, "olcolour" );
334 int align = alignment_parse( mlt_properties_get( producer_props, "align" ) );
335 int pad = mlt_properties_get_int( producer_props, "pad" );
336 int outline = mlt_properties_get_int( producer_props, "outline" );
337 char *markup = mlt_properties_get( producer_props, "markup" );
338 char *text = mlt_properties_get( producer_props, "text" );
339 char *font = mlt_properties_get( producer_props, "font" );
340 char *encoding = mlt_properties_get( producer_props, "encoding" );
341 int weight = mlt_properties_get_int( producer_props, "weight" );
342 int size = mlt_properties_get_int( producer_props, "size" );
343 int property_changed = 0;
345 if ( pixbuf == NULL )
347 // Check for file support
348 int position = mlt_properties_get_position( properties, "pango_position" );
349 mlt_properties contents = mlt_properties_get_data( producer_props, "contents", NULL );
350 mlt_geometry key_frames = mlt_properties_get_data( producer_props, "key_frames", NULL );
351 struct mlt_geometry_item_s item;
352 if ( contents != NULL )
355 mlt_geometry_prev_key( key_frames, &item, position );
356 sprintf( temp, "%d", item.frame );
357 markup = mlt_properties_get( contents, temp );
360 // See if any properties changed
361 property_changed = ( align != this->align );
362 property_changed = property_changed || ( this->fgcolor == NULL || ( fg && strcmp( fg, this->fgcolor ) ) );
363 property_changed = property_changed || ( this->bgcolor == NULL || ( bg && strcmp( bg, this->bgcolor ) ) );
364 property_changed = property_changed || ( this->olcolor == NULL || ( ol && strcmp( bg, this->olcolor ) ) );
365 property_changed = property_changed || ( pad != this->pad );
366 property_changed = property_changed || ( outline != this->outline );
367 property_changed = property_changed || ( markup && this->markup && strcmp( markup, this->markup ) );
368 property_changed = property_changed || ( text && this->text && strcmp( text, this->text ) );
369 property_changed = property_changed || ( font && this->font && strcmp( font, this->font ) );
370 property_changed = property_changed || ( weight != this->weight );
372 // Save the properties for next comparison
375 this->outline = outline;
376 set_string( &this->fgcolor, fg, "0xffffffff" );
377 set_string( &this->bgcolor, bg, "0x00000000" );
378 set_string( &this->olcolor, ol, "0x00000000" );
379 set_string( &this->markup, markup, NULL );
380 set_string( &this->text, text, NULL );
381 set_string( &this->font, font, "Sans 48" );
382 this->weight = weight;
385 if ( pixbuf == NULL && property_changed )
387 rgba_color fgcolor = parse_color( this->fgcolor, mlt_properties_get_int( producer_props, "fgcolour" ) );
388 rgba_color bgcolor = parse_color( this->bgcolor, mlt_properties_get_int( producer_props, "bgcolour" ) );
389 rgba_color olcolor = parse_color( this->olcolor, mlt_properties_get_int( producer_props, "olcolour" ) );
392 g_object_unref( this->pixbuf );
395 // Convert from specified encoding to UTF-8
396 if ( encoding != NULL && !strncaseeq( encoding, "utf-8", 5 ) && !strncaseeq( encoding, "utf8", 4 ) )
398 if ( markup != NULL && iconv_utf8( producer_props, "markup", encoding ) != -1 )
400 markup = mlt_properties_get( producer_props, "markup" );
401 set_string( &this->markup, markup, NULL );
403 if ( text != NULL && iconv_utf8( producer_props, "text", encoding ) != -1 )
405 text = mlt_properties_get( producer_props, "text" );
406 set_string( &this->text, text, NULL );
411 pixbuf = pango_get_pixbuf( markup, text, font, fgcolor, bgcolor, olcolor, pad, align, weight, size, outline );
413 if ( pixbuf != NULL )
415 // Register this pixbuf for destruction and reuse
416 mlt_properties_set_data( producer_props, "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
417 g_object_ref( pixbuf );
418 mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
420 mlt_properties_set_int( producer_props, "real_width", gdk_pixbuf_get_width( pixbuf ) );
421 mlt_properties_set_int( producer_props, "real_height", gdk_pixbuf_get_height( pixbuf ) );
423 // Store the width/height of the pixbuf temporarily
424 this->width = gdk_pixbuf_get_width( pixbuf );
425 this->height = gdk_pixbuf_get_height( pixbuf );
428 else if ( pixbuf == NULL && width > 0 && ( this->pixbuf == NULL || width != this->width || height != this->height ) )
431 g_object_unref( this->pixbuf );
433 pixbuf = mlt_properties_get_data( producer_props, "pixbuf", NULL );
436 // If we have a pixbuf and a valid width
437 if ( pixbuf && width > 0 )
439 char *interps = mlt_properties_get( properties, "rescale.interp" );
440 int interp = GDK_INTERP_BILINEAR;
442 if ( strcmp( interps, "nearest" ) == 0 )
443 interp = GDK_INTERP_NEAREST;
444 else if ( strcmp( interps, "tiles" ) == 0 )
445 interp = GDK_INTERP_TILES;
446 else if ( strcmp( interps, "hyper" ) == 0 || strcmp( interps, "bicubic" ) == 0 )
447 interp = GDK_INTERP_HYPER;
449 // fprintf(stderr,"%s: scaling from %dx%d to %dx%d\n", __FILE__, this->width, this->height, width, height);
451 // Note - the original pixbuf is already safe and ready for destruction
452 this->pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
454 // Store width and height
456 this->height = height;
460 mlt_properties_set_int( properties, "width", this->width );
461 mlt_properties_set_int( properties, "height", this->height );
462 mlt_properties_set_int( properties, "real_width", mlt_properties_get_int( producer_props, "real_width" ) );
463 mlt_properties_set_int( properties, "real_height", mlt_properties_get_int( producer_props, "real_height" ) );
466 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
469 producer_pango this = ( producer_pango ) mlt_frame_pop_service( frame );
471 // Obtain properties of frame
472 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
474 *width = mlt_properties_get_int( properties, "rescale_width" );
475 *height = mlt_properties_get_int( properties, "rescale_height" );
477 mlt_service_lock( MLT_PRODUCER_SERVICE( &this->parent ) );
480 pthread_mutex_lock( &pango_mutex );
481 refresh_image( frame, *width, *height );
483 // Get width and height
484 *width = this->width;
485 *height = this->height;
487 // Always clone here to allow 'animated' text
491 int image_size = this->width * this->height * 4;
492 *buffer = mlt_pool_alloc( image_size );
493 memcpy( *buffer, gdk_pixbuf_get_pixels( this->pixbuf ), image_size );
495 // Now update properties so we free the copy after
496 mlt_frame_set_image( frame, *buffer, image_size, mlt_pool_release );
497 *format = mlt_image_rgb24a;
504 pthread_mutex_unlock( &pango_mutex );
505 mlt_service_unlock( MLT_PRODUCER_SERVICE( &this->parent ) );
510 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
512 producer_pango this = producer->child;
515 *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
517 // Obtain properties of frame and producer
518 mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
520 // Set the producer on the frame properties
521 mlt_properties_set_data( properties, "producer_pango", this, 0, NULL, NULL );
523 // Update timecode on the frame we're creating
524 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
525 mlt_properties_set_position( properties, "pango_position", mlt_producer_frame( producer ) );
527 // Refresh the pango image
528 pthread_mutex_lock( &pango_mutex );
529 refresh_image( *frame, 0, 0 );
530 pthread_mutex_unlock( &pango_mutex );
532 // Set producer-specific frame properties
533 mlt_properties_set_int( properties, "progressive", 1 );
534 mlt_properties_set_double( properties, "aspect_ratio", 1 );
536 // Stack the get image callback
537 mlt_frame_push_service( *frame, this );
538 mlt_frame_push_get_image( *frame, producer_get_image );
540 // Calculate the next timecode
541 mlt_producer_prepare_next( producer );
546 static void producer_close( mlt_producer parent )
548 producer_pango this = parent->child;
550 g_object_unref( this->pixbuf );
551 free( this->fgcolor );
552 free( this->bgcolor );
553 free( this->olcolor );
554 free( this->markup );
557 parent->close = NULL;
558 mlt_producer_close( parent );
562 static void pango_draw_background( GdkPixbuf *pixbuf, rgba_color bg )
564 int ww = gdk_pixbuf_get_width( pixbuf );
565 int hh = gdk_pixbuf_get_height( pixbuf );
566 uint8_t *p = gdk_pixbuf_get_pixels( pixbuf );
569 for ( j = 0; j < hh; j++ )
571 for ( i = 0; i < ww; i++ )
581 static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const char *font, rgba_color fg, rgba_color bg, rgba_color ol, int pad, int align, int weight, int size, int outline )
583 PangoContext *context = pango_ft2_font_map_create_context( fontmap );
584 PangoLayout *layout = pango_layout_new( context );
586 GdkPixbuf *pixbuf = NULL;
588 PangoFontDescription *desc = pango_font_description_from_string( font );
590 pango_ft2_font_map_set_resolution( fontmap, 72, 72 );
591 pango_layout_set_width( layout, -1 ); // set wrapping constraints
592 pango_font_description_set_weight( desc, ( PangoWeight ) weight );
594 pango_font_description_set_absolute_size( desc, PANGO_SCALE * size );
595 pango_layout_set_font_description( layout, desc );
596 // pango_layout_set_spacing( layout, space );
597 pango_layout_set_alignment( layout, ( PangoAlignment ) align );
598 if ( markup != NULL && strcmp( markup, "" ) != 0 )
600 pango_layout_set_markup( layout, markup, strlen( markup ) );
602 else if ( text != NULL && strcmp( text, "" ) != 0 )
604 // Replace all ~'s with a line feed (silly convention, but handy)
605 char *copy = strdup( text );
606 while ( strchr( copy, '~' ) )
607 ( *strchr( copy, '~' ) ) = '\n';
608 pango_layout_set_text( layout, copy, strlen( copy ) );
613 // Pango doesn't like empty strings
614 pango_layout_set_text( layout, " ", 2 );
616 pango_layout_get_pixel_size( layout, &w, &h );
618 // Interpret size property as an absolute pixel height and compensate for
619 // freetype's "interpretation" of our absolute size request. This gives
620 // precise control over compositing and better quality by reducing scaling
621 // artifacts with composite geometries that constrain the dimensions.
622 // If you do not want this, then put the size in the font property or in
626 pango_font_description_set_absolute_size( desc, PANGO_SCALE * size * size/h );
627 pango_layout_set_font_description( layout, desc );
628 pango_layout_get_pixel_size( layout, &w, &h );
634 pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, TRUE /* has alpha */, 8, w + 2 * pad, h + 2 * pad );
635 pango_draw_background( pixbuf, bg );
638 bitmap.pitch = 32 * ( ( w + 31 ) / 31 );
640 bitmap.buffer = mlt_pool_alloc( h * bitmap.pitch );
641 bitmap.num_grays = 256;
642 bitmap.pixel_mode = ft_pixel_mode_grays;
644 memset( bitmap.buffer, 0, h * bitmap.pitch );
646 pango_ft2_render_layout( &bitmap, layout, 0, 0 );
650 fill_pixbuf_with_outline( pixbuf, &bitmap, w, h, pad, align, fg, bg, ol, outline );
654 fill_pixbuf( pixbuf, &bitmap, w, h, pad, align, fg, bg );
657 mlt_pool_release( bitmap.buffer );
658 pango_font_description_free( desc );
659 g_object_unref( layout );
660 g_object_unref( context );
665 static void fill_pixbuf( GdkPixbuf* pixbuf, FT_Bitmap* bitmap, int w, int h, int pad, int align, rgba_color fg, rgba_color bg )
667 int stride = gdk_pixbuf_get_rowstride( pixbuf );
668 uint8_t* src = bitmap->buffer;
669 int x = ( gdk_pixbuf_get_width( pixbuf ) - w - 2 * pad ) * align / 2 + pad;
670 uint8_t* dest = gdk_pixbuf_get_pixels( pixbuf ) + 4 * x + pad * stride;
683 *d++ = ( a * fg.r + ( 255 - a ) * bg.r ) >> 8;
684 *d++ = ( a * fg.g + ( 255 - a ) * bg.g ) >> 8;
685 *d++ = ( a * fg.b + ( 255 - a ) * bg.b ) >> 8;
686 *d++ = ( a * fg.a + ( 255 - a ) * bg.a ) >> 8;
689 src += bitmap->pitch;
693 static void fill_pixbuf_with_outline( GdkPixbuf* pixbuf, FT_Bitmap* bitmap, int w, int h, int pad, int align, rgba_color fg, rgba_color bg, rgba_color ol, int outline )
695 int stride = gdk_pixbuf_get_rowstride( pixbuf );
696 int x = ( gdk_pixbuf_get_width( pixbuf ) - w - 2 * pad ) * align / 2 + pad;
697 uint8_t* dest = gdk_pixbuf_get_pixels( pixbuf ) + 4 * x + pad * stride;
703 for ( j = 0; j < h; j++ )
706 for ( i = 0; i < w; i++ )
708 #define geta(x, y) (float) bitmap->buffer[ (y) * bitmap->pitch + (x) ] / 255.0
711 // One pixel fake circle
713 a_ol = MAX( a_ol, geta(i - 1, j) );
715 a_ol = MAX( a_ol, geta(i + 1, j) );
717 a_ol = MAX( a_ol, geta(i, j - 1) );
719 a_ol = MAX( a_ol, geta(i, j + 1) );
720 if ( outline >= 2 ) {
721 // Two pixels fake circle
723 a_ol = MAX( a_ol, geta(i - 2, j) );
725 a_ol = MAX( a_ol, geta(i - 2, j - 1) );
727 a_ol = MAX( a_ol, geta(i - 2, j + 1) );
731 a_ol = MAX( a_ol, geta(i - 1, j - 1) );
733 a_ol = MAX( a_ol, geta(i - 1, j - 2) );
735 a_ol = MAX( a_ol, geta(i - 1, j + 1) );
737 a_ol = MAX( a_ol, geta(i - 1, j + 2) );
740 a_ol = MAX( a_ol, geta(i, j - 2) );
742 a_ol = MAX( a_ol, geta(i, j + 2) );
745 a_ol = MAX( a_ol, geta(i + 1, j - 1) );
747 a_ol = MAX( a_ol, geta(i + 1, j - 2) );
749 a_ol = MAX( a_ol, geta(i + 1, j + 1) );
751 a_ol = MAX( a_ol, geta(i + 1, j + 2) );
754 a_ol = MAX( a_ol, geta(i + 2, j) );
756 a_ol = MAX( a_ol, geta(i + 2, j - 1) );
758 a_ol = MAX( a_ol, geta(i + 2, j + 1) );
761 if ( outline >= 3 ) {
762 // Three pixels fake circle
764 a_ol = MAX( a_ol, geta(i - 3, j) );
766 a_ol = MAX( a_ol, geta(i - 3, j - 1) );
768 a_ol = MAX( a_ol, geta(i - 3, j + 1) );
772 a_ol = MAX( a_ol, geta(i - 2, j - 2) );
774 a_ol = MAX( a_ol, geta(i - 2, j + 2) );
778 a_ol = MAX( a_ol, geta(i - 1, j - 3) );
780 a_ol = MAX( a_ol, geta(i - 1, j + 3) );
783 a_ol = MAX( a_ol, geta(i, j - 3) );
785 a_ol = MAX( a_ol, geta(i, j + 3) );
788 a_ol = MAX( a_ol, geta(i + 1, j - 3) );
790 a_ol = MAX( a_ol, geta(i + 1, j + 3) );
794 a_ol = MAX( a_ol, geta(i + 2, j - 2) );
796 a_ol = MAX( a_ol, geta(i + 2, j + 2) );
799 a_ol = MAX( a_ol, geta(i + 3, j) );
801 a_ol = MAX( a_ol, geta(i + 3, j - 1) );
803 a_ol = MAX( a_ol, geta(i + 3, j + 1) );
807 a_fg = ( float ) bitmap->buffer[ j * bitmap->pitch + i ] / 255.0;
809 *d++ = ( int ) ( a_fg * fg.r + ( 1 - a_fg ) * ( a_ol * ol.r + ( 1 - a_ol ) * bg.r ) );
810 *d++ = ( int ) ( a_fg * fg.g + ( 1 - a_fg ) * ( a_ol * ol.g + ( 1 - a_ol ) * bg.g ) );
811 *d++ = ( int ) ( a_fg * fg.b + ( 1 - a_fg ) * ( a_ol * ol.b + ( 1 - a_ol ) * bg.b ) );
812 *d++ = ( int ) ( a_fg * fg.a + ( 1 - a_fg ) * ( a_ol * ol.a + ( 1 - a_ol ) * bg.a ) );