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( 1, sizeof( struct producer_pango_s ) );
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 );
157 mlt_properties_set_int( properties, "seekable", 1 );
159 if ( filename == NULL || ( filename && ( !strcmp( filename, "" )
160 || strstr( filename, "<producer>" )
161 // workaround for old kdenlive countdown generator
162 || strstr( filename, "<producer>" ) ) ) )
164 mlt_properties_set( properties, "markup", "" );
166 else if ( filename[ 0 ] == '+' || strstr( filename, "/+" ) )
168 char *copy = strdup( filename + 1 );
170 if ( strstr( markup, "/+" ) )
171 markup = strstr( markup, "/+" ) + 2;
172 if ( strrchr( markup, '.' ) )
173 ( *strrchr( markup, '.' ) ) = '\0';
174 while ( strchr( markup, '~' ) )
175 ( *strchr( markup, '~' ) ) = '\n';
176 mlt_properties_set( properties, "resource", filename );
177 mlt_properties_set( properties, "markup", markup );
180 else if ( strstr( filename, ".mpl" ) )
183 mlt_properties contents = mlt_properties_load( filename );
184 mlt_geometry key_frames = mlt_geometry_init( );
185 struct mlt_geometry_item_s item;
186 mlt_properties_set( properties, "resource", filename );
187 mlt_properties_set_data( properties, "contents", contents, 0, ( mlt_destructor )mlt_properties_close, NULL );
188 mlt_properties_set_data( properties, "key_frames", key_frames, 0, ( mlt_destructor )mlt_geometry_close, NULL );
190 // Make sure we have at least one entry
191 if ( mlt_properties_get( contents, "0" ) == NULL )
192 mlt_properties_set( contents, "0", "" );
194 for ( i = 0; i < mlt_properties_count( contents ); i ++ )
196 char *name = mlt_properties_get_name( contents, i );
197 char *value = mlt_properties_get_value( contents, i );
198 while ( value != NULL && strchr( value, '~' ) )
199 ( *strchr( value, '~' ) ) = '\n';
200 item.frame = atoi( name );
201 mlt_geometry_insert( key_frames, &item );
203 mlt_geometry_interpolate( key_frames );
207 FILE *f = fopen( filename, "r" );
215 while ( fgets( line, 80, f ) )
217 size += strlen( line ) + 1;
220 markup = realloc( markup, size );
222 strcat( markup, line );
226 markup = strdup( line );
231 if ( markup && markup[ strlen( markup ) - 1 ] == '\n' )
232 markup[ strlen( markup ) - 1 ] = '\0';
234 mlt_properties_set( properties, "resource", filename );
236 mlt_properties_set( properties, "markup", markup );
238 mlt_properties_set( properties, "markup", "" );
243 producer->close = NULL;
244 mlt_producer_close( producer );
256 static void set_string( char **string, const char *value, const char *fallback )
261 *string = strdup( value );
263 else if ( *string == NULL && fallback != NULL )
265 *string = strdup( fallback );
267 else if ( *string != NULL && fallback == NULL )
274 rgba_color parse_color( char *color, unsigned int color_int )
276 rgba_color result = { 0xff, 0xff, 0xff, 0xff };
278 if ( !strcmp( color, "red" ) )
284 else if ( !strcmp( color, "green" ) )
290 else if ( !strcmp( color, "blue" ) )
296 else if ( strcmp( color, "white" ) )
298 result.r = ( color_int >> 24 ) & 0xff;
299 result.g = ( color_int >> 16 ) & 0xff;
300 result.b = ( color_int >> 8 ) & 0xff;
301 result.a = ( color_int ) & 0xff;
307 /** Convert a string property to UTF-8
309 static int iconv_utf8( mlt_properties properties, const char *prop_name, const char* encoding )
311 char *text = mlt_properties_get( properties, prop_name );
314 iconv_t cd = iconv_open( "UTF-8", encoding );
315 if ( text && ( cd != ( iconv_t )-1 ) )
317 char *inbuf_p = text;
318 size_t inbuf_n = strlen( text );
319 size_t outbuf_n = inbuf_n * 6;
320 char *outbuf = mlt_pool_alloc( outbuf_n );
321 char *outbuf_p = outbuf;
323 memset( outbuf, 0, outbuf_n );
325 if ( text != NULL && strcmp( text, "" ) && iconv( cd, &inbuf_p, &inbuf_n, &outbuf_p, &outbuf_n ) != -1 )
326 mlt_properties_set( properties, prop_name, outbuf );
328 mlt_properties_set( properties, prop_name, "" );
330 mlt_pool_release( outbuf );
337 static void refresh_image( mlt_frame frame, int width, int height )
340 GdkPixbuf *pixbuf = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", NULL );
342 // Obtain properties of frame
343 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
345 // Obtain the producer pango for this frame
346 producer_pango this = mlt_properties_get_data( properties, "producer_pango", NULL );
348 // Obtain the producer
349 mlt_producer producer = &this->parent;
351 // Obtain the producer properties
352 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
354 // Get producer properties
355 char *fg = mlt_properties_get( producer_props, "fgcolour" );
356 char *bg = mlt_properties_get( producer_props, "bgcolour" );
357 char *ol = mlt_properties_get( producer_props, "olcolour" );
358 int align = parse_alignment( mlt_properties_get( producer_props, "align" ) );
359 int pad = mlt_properties_get_int( producer_props, "pad" );
360 int outline = mlt_properties_get_int( producer_props, "outline" );
361 char *markup = mlt_properties_get( producer_props, "markup" );
362 char *text = mlt_properties_get( producer_props, "text" );
363 char *font = mlt_properties_get( producer_props, "font" );
364 char *family = mlt_properties_get( producer_props, "family" );
365 int style = parse_style( mlt_properties_get( producer_props, "style" ) );
366 char *encoding = mlt_properties_get( producer_props, "encoding" );
367 int weight = mlt_properties_get_int( producer_props, "weight" );
368 int size = mlt_properties_get_int( producer_props, "size" );
369 int property_changed = 0;
371 if ( pixbuf == NULL )
373 // Check for file support
374 mlt_properties contents = mlt_properties_get_data( producer_props, "contents", NULL );
375 mlt_geometry key_frames = mlt_properties_get_data( producer_props, "key_frames", NULL );
376 struct mlt_geometry_item_s item;
377 if ( contents != NULL )
380 mlt_geometry_prev_key( key_frames, &item, mlt_frame_original_position( frame ) );
381 sprintf( temp, "%d", item.frame );
382 markup = mlt_properties_get( contents, temp );
385 // See if any properties changed
386 property_changed = ( align != this->align );
387 property_changed = property_changed || ( this->fgcolor == NULL || ( fg && strcmp( fg, this->fgcolor ) ) );
388 property_changed = property_changed || ( this->bgcolor == NULL || ( bg && strcmp( bg, this->bgcolor ) ) );
389 property_changed = property_changed || ( this->olcolor == NULL || ( ol && strcmp( ol, this->olcolor ) ) );
390 property_changed = property_changed || ( pad != this->pad );
391 property_changed = property_changed || ( outline != this->outline );
392 property_changed = property_changed || ( markup && this->markup && strcmp( markup, this->markup ) );
393 property_changed = property_changed || ( text && this->text && strcmp( text, this->text ) );
394 property_changed = property_changed || ( font && this->font && strcmp( font, this->font ) );
395 property_changed = property_changed || ( family && this->family && strcmp( family, this->family ) );
396 property_changed = property_changed || ( weight != this->weight );
397 property_changed = property_changed || ( style != this->style );
398 property_changed = property_changed || ( size != this->size );
400 // Save the properties for next comparison
403 this->outline = outline;
404 set_string( &this->fgcolor, fg, "0xffffffff" );
405 set_string( &this->bgcolor, bg, "0x00000000" );
406 set_string( &this->olcolor, ol, "0x00000000" );
407 set_string( &this->markup, markup, NULL );
408 set_string( &this->text, text, NULL );
409 set_string( &this->font, font, NULL );
410 set_string( &this->family, family, "Sans" );
411 this->weight = weight;
416 if ( pixbuf == NULL && property_changed )
418 rgba_color fgcolor = parse_color( this->fgcolor, mlt_properties_get_int( producer_props, "fgcolour" ) );
419 rgba_color bgcolor = parse_color( this->bgcolor, mlt_properties_get_int( producer_props, "bgcolour" ) );
420 rgba_color olcolor = parse_color( this->olcolor, mlt_properties_get_int( producer_props, "olcolour" ) );
423 g_object_unref( this->pixbuf );
426 // Convert from specified encoding to UTF-8
427 if ( encoding != NULL && !strncaseeq( encoding, "utf-8", 5 ) && !strncaseeq( encoding, "utf8", 4 ) )
429 if ( markup != NULL && iconv_utf8( producer_props, "markup", encoding ) != -1 )
431 markup = mlt_properties_get( producer_props, "markup" );
432 set_string( &this->markup, markup, NULL );
434 if ( text != NULL && iconv_utf8( producer_props, "text", encoding ) != -1 )
436 text = mlt_properties_get( producer_props, "text" );
437 set_string( &this->text, text, NULL );
442 pixbuf = pango_get_pixbuf( markup, text, font, fgcolor, bgcolor, olcolor, pad, align, family, style, weight, size, outline );
444 if ( pixbuf != NULL )
446 // Register this pixbuf for destruction and reuse
447 mlt_properties_set_data( producer_props, "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
448 g_object_ref( pixbuf );
449 mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
451 mlt_properties_set_int( producer_props, "meta.media.width", gdk_pixbuf_get_width( pixbuf ) );
452 mlt_properties_set_int( producer_props, "meta.media.height", gdk_pixbuf_get_height( pixbuf ) );
454 // Store the width/height of the pixbuf temporarily
455 this->width = gdk_pixbuf_get_width( pixbuf );
456 this->height = gdk_pixbuf_get_height( pixbuf );
459 else if ( pixbuf == NULL && width > 0 && ( this->pixbuf == NULL || width != this->width || height != this->height ) )
462 g_object_unref( this->pixbuf );
464 pixbuf = mlt_properties_get_data( producer_props, "pixbuf", NULL );
467 // If we have a pixbuf and a valid width
468 if ( pixbuf && width > 0 )
470 char *interps = mlt_properties_get( properties, "rescale.interp" );
471 int interp = GDK_INTERP_BILINEAR;
473 if ( strcmp( interps, "nearest" ) == 0 )
474 interp = GDK_INTERP_NEAREST;
475 else if ( strcmp( interps, "tiles" ) == 0 )
476 interp = GDK_INTERP_TILES;
477 else if ( strcmp( interps, "hyper" ) == 0 || strcmp( interps, "bicubic" ) == 0 )
478 interp = GDK_INTERP_HYPER;
480 // fprintf(stderr,"%s: scaling from %dx%d to %dx%d\n", __FILE__, this->width, this->height, width, height);
482 // Note - the original pixbuf is already safe and ready for destruction
483 this->pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
485 // Store width and height
487 this->height = height;
491 mlt_properties_set_int( properties, "width", this->width );
492 mlt_properties_set_int( properties, "height", this->height );
495 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
498 producer_pango this = ( producer_pango ) mlt_frame_pop_service( frame );
500 // Obtain properties of frame
501 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
503 *width = mlt_properties_get_int( properties, "rescale_width" );
504 *height = mlt_properties_get_int( properties, "rescale_height" );
506 mlt_service_lock( MLT_PRODUCER_SERVICE( &this->parent ) );
509 pthread_mutex_lock( &pango_mutex );
510 refresh_image( frame, *width, *height );
512 // Get width and height
513 *width = this->width;
514 *height = this->height;
515 *format = mlt_image_rgb24a;
517 // Always clone here to allow 'animated' text
521 int image_size = this->width * this->height * 4;
522 *buffer = mlt_pool_alloc( image_size );
523 memcpy( *buffer, gdk_pixbuf_get_pixels( this->pixbuf ), image_size );
525 // Now update properties so we free the copy after
526 mlt_frame_set_image( frame, *buffer, image_size, mlt_pool_release );
533 pthread_mutex_unlock( &pango_mutex );
534 mlt_service_unlock( MLT_PRODUCER_SERVICE( &this->parent ) );
539 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
541 producer_pango this = producer->child;
543 // Fetch the producers properties
544 mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( producer );
547 *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
549 // Obtain properties of frame and producer
550 mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
552 // Set the producer on the frame properties
553 mlt_properties_set_data( properties, "producer_pango", this, 0, NULL, NULL );
555 // Update timecode on the frame we're creating
556 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
558 // Refresh the pango image
559 pthread_mutex_lock( &pango_mutex );
560 refresh_image( *frame, 0, 0 );
561 pthread_mutex_unlock( &pango_mutex );
563 // Set producer-specific frame properties
564 mlt_properties_set_int( properties, "progressive", 1 );
565 double force_ratio = mlt_properties_get_double( producer_properties, "force_aspect_ratio" );
566 if ( force_ratio > 0.0 )
567 mlt_properties_set_double( properties, "aspect_ratio", force_ratio );
569 mlt_properties_set_double( properties, "aspect_ratio", 1.0);
571 // Stack the get image callback
572 mlt_frame_push_service( *frame, this );
573 mlt_frame_push_get_image( *frame, producer_get_image );
575 // Calculate the next timecode
576 mlt_producer_prepare_next( producer );
581 static void producer_close( mlt_producer parent )
583 producer_pango this = parent->child;
585 g_object_unref( this->pixbuf );
586 free( this->fgcolor );
587 free( this->bgcolor );
588 free( this->olcolor );
589 free( this->markup );
592 free( this->family );
593 parent->close = NULL;
594 mlt_producer_close( parent );
598 static void pango_draw_background( GdkPixbuf *pixbuf, rgba_color bg )
600 int ww = gdk_pixbuf_get_width( pixbuf );
601 int hh = gdk_pixbuf_get_height( pixbuf );
602 uint8_t *p = gdk_pixbuf_get_pixels( pixbuf );
605 for ( j = 0; j < hh; j++ )
607 for ( i = 0; i < ww; i++ )
617 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 )
619 PangoContext *context = pango_ft2_font_map_create_context( fontmap );
620 PangoLayout *layout = pango_layout_new( context );
622 GdkPixbuf *pixbuf = NULL;
624 PangoFontDescription *desc = NULL;
628 // Support for deprecated "font" property.
629 desc = pango_font_description_from_string( font );
630 pango_ft2_font_map_set_resolution( fontmap, 72, 72 );
634 desc = pango_font_description_from_string( family );
635 pango_font_description_set_size( desc, PANGO_SCALE * size );
636 pango_font_description_set_style( desc, (PangoStyle) style );
639 pango_font_description_set_weight( desc, ( PangoWeight ) weight );
641 pango_layout_set_width( layout, -1 ); // set wrapping constraints
642 pango_layout_set_font_description( layout, desc );
643 pango_layout_set_alignment( layout, ( PangoAlignment ) align );
644 if ( markup != NULL && strcmp( markup, "" ) != 0 )
646 pango_layout_set_markup( layout, markup, strlen( markup ) );
648 else if ( text != NULL && strcmp( text, "" ) != 0 )
650 // Replace all ~'s with a line feed (silly convention, but handy)
651 char *copy = strdup( text );
652 while ( strchr( copy, '~' ) )
653 ( *strchr( copy, '~' ) ) = '\n';
654 pango_layout_set_text( layout, copy, strlen( copy ) );
659 // Pango doesn't like empty strings
660 pango_layout_set_text( layout, " ", 2 );
662 pango_layout_get_pixel_size( layout, &w, &h );
667 pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, TRUE /* has alpha */, 8, w + 2 * pad, h + 2 * pad );
668 pango_draw_background( pixbuf, bg );
671 bitmap.pitch = 32 * ( ( w + 31 ) / 31 );
673 bitmap.buffer = mlt_pool_alloc( h * bitmap.pitch );
674 bitmap.num_grays = 256;
675 bitmap.pixel_mode = ft_pixel_mode_grays;
677 memset( bitmap.buffer, 0, h * bitmap.pitch );
679 pango_ft2_render_layout( &bitmap, layout, 0, 0 );
683 fill_pixbuf_with_outline( pixbuf, &bitmap, w, h, pad, align, fg, bg, ol, outline );
687 fill_pixbuf( pixbuf, &bitmap, w, h, pad, align, fg, bg );
690 mlt_pool_release( bitmap.buffer );
691 pango_font_description_free( desc );
692 g_object_unref( layout );
693 g_object_unref( context );
698 static void fill_pixbuf( GdkPixbuf* pixbuf, FT_Bitmap* bitmap, int w, int h, int pad, int align, rgba_color fg, rgba_color bg )
700 int stride = gdk_pixbuf_get_rowstride( pixbuf );
701 uint8_t* src = bitmap->buffer;
702 int x = ( gdk_pixbuf_get_width( pixbuf ) - w - 2 * pad ) * align / 2 + pad;
703 uint8_t* dest = gdk_pixbuf_get_pixels( pixbuf ) + 4 * x + pad * stride;
716 *d++ = ( a * fg.r + ( 255 - a ) * bg.r ) >> 8;
717 *d++ = ( a * fg.g + ( 255 - a ) * bg.g ) >> 8;
718 *d++ = ( a * fg.b + ( 255 - a ) * bg.b ) >> 8;
719 *d++ = ( a * fg.a + ( 255 - a ) * bg.a ) >> 8;
722 src += bitmap->pitch;
726 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 )
728 int stride = gdk_pixbuf_get_rowstride( pixbuf );
729 int x = ( gdk_pixbuf_get_width( pixbuf ) - w - 2 * pad ) * align / 2 + pad;
730 uint8_t* dest = gdk_pixbuf_get_pixels( pixbuf ) + 4 * x + pad * stride;
736 for ( j = 0; j < h; j++ )
739 for ( i = 0; i < w; i++ )
741 #define geta(x, y) (float) bitmap->buffer[ (y) * bitmap->pitch + (x) ] / 255.0
744 // One pixel fake circle
746 a_ol = MAX( a_ol, geta(i - 1, j) );
748 a_ol = MAX( a_ol, geta(i + 1, j) );
750 a_ol = MAX( a_ol, geta(i, j - 1) );
752 a_ol = MAX( a_ol, geta(i, j + 1) );
753 if ( outline >= 2 ) {
754 // Two pixels fake circle
756 a_ol = MAX( a_ol, geta(i - 2, j) );
758 a_ol = MAX( a_ol, geta(i - 2, j - 1) );
760 a_ol = MAX( a_ol, geta(i - 2, j + 1) );
764 a_ol = MAX( a_ol, geta(i - 1, j - 1) );
766 a_ol = MAX( a_ol, geta(i - 1, j - 2) );
768 a_ol = MAX( a_ol, geta(i - 1, j + 1) );
770 a_ol = MAX( a_ol, geta(i - 1, j + 2) );
773 a_ol = MAX( a_ol, geta(i, j - 2) );
775 a_ol = MAX( a_ol, geta(i, j + 2) );
778 a_ol = MAX( a_ol, geta(i + 1, j - 1) );
780 a_ol = MAX( a_ol, geta(i + 1, j - 2) );
782 a_ol = MAX( a_ol, geta(i + 1, j + 1) );
784 a_ol = MAX( a_ol, geta(i + 1, j + 2) );
787 a_ol = MAX( a_ol, geta(i + 2, j) );
789 a_ol = MAX( a_ol, geta(i + 2, j - 1) );
791 a_ol = MAX( a_ol, geta(i + 2, j + 1) );
794 if ( outline >= 3 ) {
795 // Three pixels fake circle
797 a_ol = MAX( a_ol, geta(i - 3, j) );
799 a_ol = MAX( a_ol, geta(i - 3, j - 1) );
801 a_ol = MAX( a_ol, geta(i - 3, j + 1) );
805 a_ol = MAX( a_ol, geta(i - 2, j - 2) );
807 a_ol = MAX( a_ol, geta(i - 2, j + 2) );
811 a_ol = MAX( a_ol, geta(i - 1, j - 3) );
813 a_ol = MAX( a_ol, geta(i - 1, j + 3) );
816 a_ol = MAX( a_ol, geta(i, j - 3) );
818 a_ol = MAX( a_ol, geta(i, j + 3) );
821 a_ol = MAX( a_ol, geta(i + 1, j - 3) );
823 a_ol = MAX( a_ol, geta(i + 1, j + 3) );
827 a_ol = MAX( a_ol, geta(i + 2, j - 2) );
829 a_ol = MAX( a_ol, geta(i + 2, j + 2) );
832 a_ol = MAX( a_ol, geta(i + 3, j) );
834 a_ol = MAX( a_ol, geta(i + 3, j - 1) );
836 a_ol = MAX( a_ol, geta(i + 3, j + 1) );
840 a_fg = ( float ) bitmap->buffer[ j * bitmap->pitch + i ] / 255.0;
842 *d++ = ( int ) ( a_fg * fg.r + ( 1 - a_fg ) * ( a_ol * ol.r + ( 1 - a_ol ) * bg.r ) );
843 *d++ = ( int ) ( a_fg * fg.g + ( 1 - a_fg ) * ( a_ol * ol.g + ( 1 - a_ol ) * bg.g ) );
844 *d++ = ( int ) ( a_fg * fg.b + ( 1 - a_fg ) * ( a_ol * ol.b + ( 1 - a_ol ) * bg.b ) );
845 *d++ = ( int ) ( a_fg * fg.a + ( 1 - a_fg ) * ( a_ol * ol.a + ( 1 - a_ol ) * bg.a ) );