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;
65 // special color type used by internal pango routines
71 // Forward declarations
72 static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
73 static void producer_close( mlt_producer parent );
74 static void pango_draw_background( GdkPixbuf *pixbuf, rgba_color bg );
75 static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const char *font,
76 rgba_color fg, rgba_color bg, rgba_color ol, int pad, int align, char* family, int style, int weight, int size, int outline );
77 static void fill_pixbuf( GdkPixbuf* pixbuf, FT_Bitmap* bitmap, int w, int h, int pad, int align, rgba_color fg, rgba_color bg );
78 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 );
80 /** Return nonzero if the two strings are equal, ignoring case, up to
81 the first n characters.
83 int strncaseeq(const char *s1, const char *s2, size_t n)
87 if (tolower(*s1++) != tolower(*s2++))
93 /** Parse the alignment property.
96 static int parse_alignment( char* align )
98 int ret = pango_align_left;
100 if ( align == NULL );
101 else if ( isdigit( align[ 0 ] ) )
103 else if ( align[ 0 ] == 'c' || align[ 0 ] == 'm' )
104 ret = pango_align_center;
105 else if ( align[ 0 ] == 'r' )
106 ret = pango_align_right;
111 /** Parse the style property.
114 static int parse_style( char* style )
116 int ret = PANGO_STYLE_NORMAL;
117 if( !strncmp(style, "italic", 6) )
118 ret = PANGO_STYLE_ITALIC;
122 static PangoFT2FontMap *fontmap = NULL;
124 mlt_producer producer_pango_init( const char *filename )
126 producer_pango this = calloc( sizeof( struct producer_pango_s ), 1 );
127 if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
129 mlt_producer producer = &this->parent;
131 pthread_mutex_lock( &pango_mutex );
132 if ( fontmap == NULL )
133 fontmap = (PangoFT2FontMap*) pango_ft2_font_map_new();
135 pthread_mutex_unlock( &pango_mutex );
137 producer->get_frame = producer_get_frame;
138 producer->close = ( mlt_destructor )producer_close;
140 // Get the properties interface
141 mlt_properties properties = MLT_PRODUCER_PROPERTIES( &this->parent );
143 // Set the default properties
144 mlt_properties_set( properties, "fgcolour", "0xffffffff" );
145 mlt_properties_set( properties, "bgcolour", "0x00000000" );
146 mlt_properties_set( properties, "olcolour", "0x00000000" );
147 mlt_properties_set_int( properties, "align", pango_align_left );
148 mlt_properties_set_int( properties, "pad", 0 );
149 mlt_properties_set_int( properties, "outline", 0 );
150 mlt_properties_set( properties, "text", "" );
151 mlt_properties_set( properties, "font", NULL );
152 mlt_properties_set( properties, "family", "Sans" );
153 mlt_properties_set_int( properties, "size", 48 );
154 mlt_properties_set( properties, "style", "normal" );
155 mlt_properties_set( properties, "encoding", "UTF-8" );
156 mlt_properties_set_int( properties, "weight", PANGO_WEIGHT_NORMAL );
158 if ( filename == NULL || ( filename && ( !strcmp( filename, "" )
159 // workaround for old kdenlive countdown generator
160 || strstr( filename, "<producer>" ) ) ) )
162 mlt_properties_set( properties, "markup", "" );
164 else if ( filename[ 0 ] == '+' || strstr( filename, "/+" ) )
166 char *copy = strdup( filename + 1 );
168 if ( strstr( markup, "/+" ) )
169 markup = strstr( markup, "/+" ) + 2;
170 ( *strrchr( markup, '.' ) ) = '\0';
171 while ( strchr( markup, '~' ) )
172 ( *strchr( markup, '~' ) ) = '\n';
173 mlt_properties_set( properties, "resource", filename );
174 mlt_properties_set( properties, "markup", markup );
177 else if ( strstr( filename, ".mpl" ) )
180 mlt_properties contents = mlt_properties_load( filename );
181 mlt_geometry key_frames = mlt_geometry_init( );
182 struct mlt_geometry_item_s item;
183 mlt_properties_set( properties, "resource", filename );
184 mlt_properties_set_data( properties, "contents", contents, 0, ( mlt_destructor )mlt_properties_close, NULL );
185 mlt_properties_set_data( properties, "key_frames", key_frames, 0, ( mlt_destructor )mlt_geometry_close, NULL );
187 // Make sure we have at least one entry
188 if ( mlt_properties_get( contents, "0" ) == NULL )
189 mlt_properties_set( contents, "0", "" );
191 for ( i = 0; i < mlt_properties_count( contents ); i ++ )
193 char *name = mlt_properties_get_name( contents, i );
194 char *value = mlt_properties_get_value( contents, i );
195 while ( value != NULL && strchr( value, '~' ) )
196 ( *strchr( value, '~' ) ) = '\n';
197 item.frame = atoi( name );
198 mlt_geometry_insert( key_frames, &item );
200 mlt_geometry_interpolate( key_frames );
204 FILE *f = fopen( filename, "r" );
212 while ( fgets( line, 80, f ) )
214 size += strlen( line ) + 1;
217 markup = realloc( markup, size );
218 strcat( markup, line );
222 markup = strdup( line );
227 if ( markup[ strlen( markup ) - 1 ] == '\n' )
228 markup[ strlen( markup ) - 1 ] = '\0';
230 mlt_properties_set( properties, "resource", filename );
231 mlt_properties_set( properties, "markup", ( markup == NULL ? "" : markup ) );
236 producer->close = NULL;
237 mlt_producer_close( producer );
249 static void set_string( char **string, const char *value, const char *fallback )
254 *string = strdup( value );
256 else if ( *string == NULL && fallback != NULL )
258 *string = strdup( fallback );
260 else if ( *string != NULL && fallback == NULL )
267 rgba_color parse_color( char *color, unsigned int color_int )
269 rgba_color result = { 0xff, 0xff, 0xff, 0xff };
271 if ( !strcmp( color, "red" ) )
277 else if ( !strcmp( color, "green" ) )
283 else if ( !strcmp( color, "blue" ) )
289 else if ( strcmp( color, "white" ) )
291 result.r = ( color_int >> 24 ) & 0xff;
292 result.g = ( color_int >> 16 ) & 0xff;
293 result.b = ( color_int >> 8 ) & 0xff;
294 result.a = ( color_int ) & 0xff;
300 /** Convert a string property to UTF-8
302 static int iconv_utf8( mlt_properties properties, const char *prop_name, const char* encoding )
304 char *text = mlt_properties_get( properties, prop_name );
307 iconv_t cd = iconv_open( "UTF-8", encoding );
308 if ( cd != ( iconv_t )-1 )
310 char *inbuf_p = text;
311 size_t inbuf_n = strlen( text );
312 size_t outbuf_n = inbuf_n * 6;
313 char *outbuf = mlt_pool_alloc( outbuf_n );
314 char *outbuf_p = outbuf;
316 memset( outbuf, 0, outbuf_n );
318 if ( text != NULL && strcmp( text, "" ) && iconv( cd, &inbuf_p, &inbuf_n, &outbuf_p, &outbuf_n ) != -1 )
319 mlt_properties_set( properties, prop_name, outbuf );
321 mlt_properties_set( properties, prop_name, "" );
323 mlt_pool_release( outbuf );
330 static void refresh_image( mlt_frame frame, int width, int height )
333 GdkPixbuf *pixbuf = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", NULL );
335 // Obtain properties of frame
336 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
338 // Obtain the producer pango for this frame
339 producer_pango this = mlt_properties_get_data( properties, "producer_pango", NULL );
341 // Obtain the producer
342 mlt_producer producer = &this->parent;
344 // Obtain the producer properties
345 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
347 // Get producer properties
348 char *fg = mlt_properties_get( producer_props, "fgcolour" );
349 char *bg = mlt_properties_get( producer_props, "bgcolour" );
350 char *ol = mlt_properties_get( producer_props, "olcolour" );
351 int align = parse_alignment( mlt_properties_get( producer_props, "align" ) );
352 int pad = mlt_properties_get_int( producer_props, "pad" );
353 int outline = mlt_properties_get_int( producer_props, "outline" );
354 char *markup = mlt_properties_get( producer_props, "markup" );
355 char *text = mlt_properties_get( producer_props, "text" );
356 char *font = mlt_properties_get( producer_props, "font" );
357 char *family = mlt_properties_get( producer_props, "family" );
358 int style = parse_style( mlt_properties_get( producer_props, "style" ) );
359 char *encoding = mlt_properties_get( producer_props, "encoding" );
360 int weight = mlt_properties_get_int( producer_props, "weight" );
361 int size = mlt_properties_get_int( producer_props, "size" );
362 int property_changed = 0;
364 if ( pixbuf == NULL )
366 // Check for file support
367 int position = mlt_properties_get_position( properties, "pango_position" );
368 mlt_properties contents = mlt_properties_get_data( producer_props, "contents", NULL );
369 mlt_geometry key_frames = mlt_properties_get_data( producer_props, "key_frames", NULL );
370 struct mlt_geometry_item_s item;
371 if ( contents != NULL )
374 mlt_geometry_prev_key( key_frames, &item, position );
375 sprintf( temp, "%d", item.frame );
376 markup = mlt_properties_get( contents, temp );
379 // See if any properties changed
380 property_changed = ( align != this->align );
381 property_changed = property_changed || ( this->fgcolor == NULL || ( fg && strcmp( fg, this->fgcolor ) ) );
382 property_changed = property_changed || ( this->bgcolor == NULL || ( bg && strcmp( bg, this->bgcolor ) ) );
383 property_changed = property_changed || ( this->olcolor == NULL || ( ol && strcmp( ol, this->olcolor ) ) );
384 property_changed = property_changed || ( pad != this->pad );
385 property_changed = property_changed || ( outline != this->outline );
386 property_changed = property_changed || ( markup && this->markup && strcmp( markup, this->markup ) );
387 property_changed = property_changed || ( text && this->text && strcmp( text, this->text ) );
388 property_changed = property_changed || ( font && this->font && strcmp( font, this->font ) );
389 property_changed = property_changed || ( family && this->family && strcmp( family, this->family ) );
390 property_changed = property_changed || ( weight != this->weight );
391 property_changed = property_changed || ( style != this->style );
392 property_changed = property_changed || ( size != this->size );
394 // Save the properties for next comparison
397 this->outline = outline;
398 set_string( &this->fgcolor, fg, "0xffffffff" );
399 set_string( &this->bgcolor, bg, "0x00000000" );
400 set_string( &this->olcolor, ol, "0x00000000" );
401 set_string( &this->markup, markup, NULL );
402 set_string( &this->text, text, NULL );
403 set_string( &this->font, font, NULL );
404 set_string( &this->family, family, "Sans" );
405 this->weight = weight;
410 if ( pixbuf == NULL && property_changed )
412 rgba_color fgcolor = parse_color( this->fgcolor, mlt_properties_get_int( producer_props, "fgcolour" ) );
413 rgba_color bgcolor = parse_color( this->bgcolor, mlt_properties_get_int( producer_props, "bgcolour" ) );
414 rgba_color olcolor = parse_color( this->olcolor, mlt_properties_get_int( producer_props, "olcolour" ) );
417 g_object_unref( this->pixbuf );
420 // Convert from specified encoding to UTF-8
421 if ( encoding != NULL && !strncaseeq( encoding, "utf-8", 5 ) && !strncaseeq( encoding, "utf8", 4 ) )
423 if ( markup != NULL && iconv_utf8( producer_props, "markup", encoding ) != -1 )
425 markup = mlt_properties_get( producer_props, "markup" );
426 set_string( &this->markup, markup, NULL );
428 if ( text != NULL && iconv_utf8( producer_props, "text", encoding ) != -1 )
430 text = mlt_properties_get( producer_props, "text" );
431 set_string( &this->text, text, NULL );
436 pixbuf = pango_get_pixbuf( markup, text, font, fgcolor, bgcolor, olcolor, pad, align, family, style, weight, size, outline );
438 if ( pixbuf != NULL )
440 // Register this pixbuf for destruction and reuse
441 mlt_properties_set_data( producer_props, "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
442 g_object_ref( pixbuf );
443 mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
445 mlt_properties_set_int( producer_props, "real_width", gdk_pixbuf_get_width( pixbuf ) );
446 mlt_properties_set_int( producer_props, "real_height", gdk_pixbuf_get_height( pixbuf ) );
448 // Store the width/height of the pixbuf temporarily
449 this->width = gdk_pixbuf_get_width( pixbuf );
450 this->height = gdk_pixbuf_get_height( pixbuf );
453 else if ( pixbuf == NULL && width > 0 && ( this->pixbuf == NULL || width != this->width || height != this->height ) )
456 g_object_unref( this->pixbuf );
458 pixbuf = mlt_properties_get_data( producer_props, "pixbuf", NULL );
461 // If we have a pixbuf and a valid width
462 if ( pixbuf && width > 0 )
464 char *interps = mlt_properties_get( properties, "rescale.interp" );
465 int interp = GDK_INTERP_BILINEAR;
467 if ( strcmp( interps, "nearest" ) == 0 )
468 interp = GDK_INTERP_NEAREST;
469 else if ( strcmp( interps, "tiles" ) == 0 )
470 interp = GDK_INTERP_TILES;
471 else if ( strcmp( interps, "hyper" ) == 0 || strcmp( interps, "bicubic" ) == 0 )
472 interp = GDK_INTERP_HYPER;
474 // fprintf(stderr,"%s: scaling from %dx%d to %dx%d\n", __FILE__, this->width, this->height, width, height);
476 // Note - the original pixbuf is already safe and ready for destruction
477 this->pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
479 // Store width and height
481 this->height = height;
485 mlt_properties_set_int( properties, "width", this->width );
486 mlt_properties_set_int( properties, "height", this->height );
487 mlt_properties_set_int( properties, "real_width", mlt_properties_get_int( producer_props, "real_width" ) );
488 mlt_properties_set_int( properties, "real_height", mlt_properties_get_int( producer_props, "real_height" ) );
491 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
494 producer_pango this = ( producer_pango ) mlt_frame_pop_service( frame );
496 // Obtain properties of frame
497 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
499 *width = mlt_properties_get_int( properties, "rescale_width" );
500 *height = mlt_properties_get_int( properties, "rescale_height" );
502 mlt_service_lock( MLT_PRODUCER_SERVICE( &this->parent ) );
505 pthread_mutex_lock( &pango_mutex );
506 refresh_image( frame, *width, *height );
508 // Get width and height
509 *width = this->width;
510 *height = this->height;
511 *format = mlt_image_rgb24a;
513 // Always clone here to allow 'animated' text
517 int image_size = this->width * this->height * 4;
518 *buffer = mlt_pool_alloc( image_size );
519 memcpy( *buffer, gdk_pixbuf_get_pixels( this->pixbuf ), image_size );
521 // Now update properties so we free the copy after
522 mlt_frame_set_image( frame, *buffer, image_size, mlt_pool_release );
529 pthread_mutex_unlock( &pango_mutex );
530 mlt_service_unlock( MLT_PRODUCER_SERVICE( &this->parent ) );
535 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
537 producer_pango this = producer->child;
539 // Fetch the producers properties
540 mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( producer );
543 *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
545 // Obtain properties of frame and producer
546 mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
548 // Set the producer on the frame properties
549 mlt_properties_set_data( properties, "producer_pango", this, 0, NULL, NULL );
551 // Update timecode on the frame we're creating
552 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
553 mlt_properties_set_position( properties, "pango_position", mlt_producer_frame( producer ) );
555 // Refresh the pango image
556 pthread_mutex_lock( &pango_mutex );
557 refresh_image( *frame, 0, 0 );
558 pthread_mutex_unlock( &pango_mutex );
560 // Set producer-specific frame properties
561 mlt_properties_set_int( properties, "progressive", 1 );
562 double force_ratio = mlt_properties_get_double( producer_properties, "force_aspect_ratio" );
563 if ( force_ratio > 0.0 )
564 mlt_properties_set_double( properties, "aspect_ratio", force_ratio );
566 mlt_properties_set_double( properties, "aspect_ratio", 1.0);
568 // Stack the get image callback
569 mlt_frame_push_service( *frame, this );
570 mlt_frame_push_get_image( *frame, producer_get_image );
572 // Calculate the next timecode
573 mlt_producer_prepare_next( producer );
578 static void producer_close( mlt_producer parent )
580 producer_pango this = parent->child;
582 g_object_unref( this->pixbuf );
583 free( this->fgcolor );
584 free( this->bgcolor );
585 free( this->olcolor );
586 free( this->markup );
589 free( this->family );
590 parent->close = NULL;
591 mlt_producer_close( parent );
595 static void pango_draw_background( GdkPixbuf *pixbuf, rgba_color bg )
597 int ww = gdk_pixbuf_get_width( pixbuf );
598 int hh = gdk_pixbuf_get_height( pixbuf );
599 uint8_t *p = gdk_pixbuf_get_pixels( pixbuf );
602 for ( j = 0; j < hh; j++ )
604 for ( i = 0; i < ww; i++ )
614 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, char* family, int style, int weight, int size, int outline )
616 PangoContext *context = pango_ft2_font_map_create_context( fontmap );
617 PangoLayout *layout = pango_layout_new( context );
619 GdkPixbuf *pixbuf = NULL;
621 PangoFontDescription *desc = NULL;
625 // Support for deprecated "font" property.
626 desc = pango_font_description_from_string( font );
627 pango_ft2_font_map_set_resolution( fontmap, 72, 72 );
631 desc = pango_font_description_from_string( family );
632 pango_font_description_set_size( desc, PANGO_SCALE * size );
633 pango_font_description_set_style( desc, (PangoStyle) style );
636 pango_font_description_set_weight( desc, ( PangoWeight ) weight );
638 pango_layout_set_width( layout, -1 ); // set wrapping constraints
639 pango_layout_set_font_description( layout, desc );
640 pango_layout_set_alignment( layout, ( PangoAlignment ) align );
641 if ( markup != NULL && strcmp( markup, "" ) != 0 )
643 pango_layout_set_markup( layout, markup, strlen( markup ) );
645 else if ( text != NULL && strcmp( text, "" ) != 0 )
647 // Replace all ~'s with a line feed (silly convention, but handy)
648 char *copy = strdup( text );
649 while ( strchr( copy, '~' ) )
650 ( *strchr( copy, '~' ) ) = '\n';
651 pango_layout_set_text( layout, copy, strlen( copy ) );
656 // Pango doesn't like empty strings
657 pango_layout_set_text( layout, " ", 2 );
659 pango_layout_get_pixel_size( layout, &w, &h );
664 pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, TRUE /* has alpha */, 8, w + 2 * pad, h + 2 * pad );
665 pango_draw_background( pixbuf, bg );
668 bitmap.pitch = 32 * ( ( w + 31 ) / 31 );
670 bitmap.buffer = mlt_pool_alloc( h * bitmap.pitch );
671 bitmap.num_grays = 256;
672 bitmap.pixel_mode = ft_pixel_mode_grays;
674 memset( bitmap.buffer, 0, h * bitmap.pitch );
676 pango_ft2_render_layout( &bitmap, layout, 0, 0 );
680 fill_pixbuf_with_outline( pixbuf, &bitmap, w, h, pad, align, fg, bg, ol, outline );
684 fill_pixbuf( pixbuf, &bitmap, w, h, pad, align, fg, bg );
687 mlt_pool_release( bitmap.buffer );
688 pango_font_description_free( desc );
689 g_object_unref( layout );
690 g_object_unref( context );
695 static void fill_pixbuf( GdkPixbuf* pixbuf, FT_Bitmap* bitmap, int w, int h, int pad, int align, rgba_color fg, rgba_color bg )
697 int stride = gdk_pixbuf_get_rowstride( pixbuf );
698 uint8_t* src = bitmap->buffer;
699 int x = ( gdk_pixbuf_get_width( pixbuf ) - w - 2 * pad ) * align / 2 + pad;
700 uint8_t* dest = gdk_pixbuf_get_pixels( pixbuf ) + 4 * x + pad * stride;
713 *d++ = ( a * fg.r + ( 255 - a ) * bg.r ) >> 8;
714 *d++ = ( a * fg.g + ( 255 - a ) * bg.g ) >> 8;
715 *d++ = ( a * fg.b + ( 255 - a ) * bg.b ) >> 8;
716 *d++ = ( a * fg.a + ( 255 - a ) * bg.a ) >> 8;
719 src += bitmap->pitch;
723 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 )
725 int stride = gdk_pixbuf_get_rowstride( pixbuf );
726 int x = ( gdk_pixbuf_get_width( pixbuf ) - w - 2 * pad ) * align / 2 + pad;
727 uint8_t* dest = gdk_pixbuf_get_pixels( pixbuf ) + 4 * x + pad * stride;
733 for ( j = 0; j < h; j++ )
736 for ( i = 0; i < w; i++ )
738 #define geta(x, y) (float) bitmap->buffer[ (y) * bitmap->pitch + (x) ] / 255.0
741 // One pixel fake circle
743 a_ol = MAX( a_ol, geta(i - 1, j) );
745 a_ol = MAX( a_ol, geta(i + 1, j) );
747 a_ol = MAX( a_ol, geta(i, j - 1) );
749 a_ol = MAX( a_ol, geta(i, j + 1) );
750 if ( outline >= 2 ) {
751 // Two pixels fake circle
753 a_ol = MAX( a_ol, geta(i - 2, j) );
755 a_ol = MAX( a_ol, geta(i - 2, j - 1) );
757 a_ol = MAX( a_ol, geta(i - 2, j + 1) );
761 a_ol = MAX( a_ol, geta(i - 1, j - 1) );
763 a_ol = MAX( a_ol, geta(i - 1, j - 2) );
765 a_ol = MAX( a_ol, geta(i - 1, j + 1) );
767 a_ol = MAX( a_ol, geta(i - 1, j + 2) );
770 a_ol = MAX( a_ol, geta(i, j - 2) );
772 a_ol = MAX( a_ol, geta(i, j + 2) );
775 a_ol = MAX( a_ol, geta(i + 1, j - 1) );
777 a_ol = MAX( a_ol, geta(i + 1, j - 2) );
779 a_ol = MAX( a_ol, geta(i + 1, j + 1) );
781 a_ol = MAX( a_ol, geta(i + 1, j + 2) );
784 a_ol = MAX( a_ol, geta(i + 2, j) );
786 a_ol = MAX( a_ol, geta(i + 2, j - 1) );
788 a_ol = MAX( a_ol, geta(i + 2, j + 1) );
791 if ( outline >= 3 ) {
792 // Three pixels fake circle
794 a_ol = MAX( a_ol, geta(i - 3, j) );
796 a_ol = MAX( a_ol, geta(i - 3, j - 1) );
798 a_ol = MAX( a_ol, geta(i - 3, j + 1) );
802 a_ol = MAX( a_ol, geta(i - 2, j - 2) );
804 a_ol = MAX( a_ol, geta(i - 2, j + 2) );
808 a_ol = MAX( a_ol, geta(i - 1, j - 3) );
810 a_ol = MAX( a_ol, geta(i - 1, j + 3) );
813 a_ol = MAX( a_ol, geta(i, j - 3) );
815 a_ol = MAX( a_ol, geta(i, j + 3) );
818 a_ol = MAX( a_ol, geta(i + 1, j - 3) );
820 a_ol = MAX( a_ol, geta(i + 1, j + 3) );
824 a_ol = MAX( a_ol, geta(i + 2, j - 2) );
826 a_ol = MAX( a_ol, geta(i + 2, j + 2) );
829 a_ol = MAX( a_ol, geta(i + 3, j) );
831 a_ol = MAX( a_ol, geta(i + 3, j - 1) );
833 a_ol = MAX( a_ol, geta(i + 3, j + 1) );
837 a_fg = ( float ) bitmap->buffer[ j * bitmap->pitch + i ] / 255.0;
839 *d++ = ( int ) ( a_fg * fg.r + ( 1 - a_fg ) * ( a_ol * ol.r + ( 1 - a_ol ) * bg.r ) );
840 *d++ = ( int ) ( a_fg * fg.g + ( 1 - a_fg ) * ( a_ol * ol.g + ( 1 - a_ol ) * bg.g ) );
841 *d++ = ( int ) ( a_fg * fg.b + ( 1 - a_fg ) * ( a_ol * ol.b + ( 1 - a_ol ) * bg.b ) );
842 *d++ = ( int ) ( a_fg * fg.a + ( 1 - a_fg ) * ( a_ol * ol.a + ( 1 - a_ol ) * bg.a ) );