1 /*****************************************************************************
2 * freetype.c : Put text on the video, using freetype2
3 *****************************************************************************
4 * Copyright (C) 2002 - 2005 VideoLAN
7 * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
8 * Gildas Bazin <gbazin@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() */
31 #ifdef HAVE_LINUX_LIMITS_H
32 # include <linux/limits.h>
38 #include "vlc_block.h"
39 #include "vlc_filter.h"
48 #include FT_FREETYPE_H
52 #define DEFAULT_FONT "/System/Library/Fonts/LucidaGrande.dfont"
53 #elif defined( SYS_BEOS )
54 #define DEFAULT_FONT "/boot/beos/etc/fonts/ttfonts/Swiss721.ttf"
55 #elif defined( WIN32 )
56 #define DEFAULT_FONT "" /* Default font found at run-time */
58 #define DEFAULT_FONT "/usr/share/fonts/truetype/freefont/FreeSerifBold.ttf"
61 #if defined(HAVE_FRIBIDI)
62 #include <fribidi/fribidi.h>
65 typedef struct line_desc_t line_desc_t;
67 /*****************************************************************************
69 *****************************************************************************/
70 static int Create ( vlc_object_t * );
71 static void Destroy( vlc_object_t * );
73 /* The RenderText call maps to pf_render_string, defined in vlc_filter.h */
74 static subpicture_t *RenderText( filter_t *, block_t *, int, int, int );
75 static line_desc_t *NewLine( byte_t * );
77 /*****************************************************************************
79 *****************************************************************************/
80 #define FONT_TEXT N_("Font")
81 #define FONT_LONGTEXT N_("Font filename")
82 #define FONTSIZE_TEXT N_("Font size in pixels")
83 #define FONTSIZE_LONGTEXT N_("The size of the fonts used by the osd module. " \
84 "If set to something different than 0 this option will override the " \
85 "relative font size " )
86 #define OPACITY_TEXT N_("Opacity, 0..255")
87 #define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of overlay text. " \
88 "1 = transparent, 255 = totally opaque. " )
89 #define COLOR_TEXT N_("Text Default Color")
90 #define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, hexadecimal." \
91 "#000000 = all colors off, 0xFF0000 = just Red, 0xFFFFFF = all color on [White]" )
92 #define FONTSIZER_TEXT N_("Font size")
93 #define FONTSIZER_LONGTEXT N_("The size of the fonts used by the osd module" )
95 static int pi_sizes[] = { 20, 18, 16, 12, 6 };
96 static char *ppsz_sizes_text[] = { N_("Smaller"), N_("Small"), N_("Normal"),
97 N_("Large"), N_("Larger") };
98 static int pi_color_values[] = { 0x00000000, 0x00808080, 0x00C0C0C0, 0x00FFFFFF, 0x00800000,
99 0x00FF0000, 0x00FF00FF, 0x00FFFF00, 0x00808000, 0x00008000, 0x00008080,
100 0x0000FF00, 0x00800080, 0x00000080, 0x000000FF, 0x0000FFFF};
101 static char *ppsz_color_descriptions[] = { N_("Black"), N_("Gray"), N_("Silver"), N_("White"),
102 N_("Maroon"), N_("Red"), N_("Fuchsia"), N_("Yellow"),
103 N_("Olive"), N_("Green"), N_("Teal"), N_("Lime"), N_("Purple"),
104 N_("Navy"), N_("Blue"), N_("Aqua") };
107 set_shortname( _("Freetype"));
108 set_description( _("Freetype2 font renderer") );
109 set_category( CAT_VIDEO );
110 set_subcategory( SUBCAT_VIDEO_TEXT );
112 add_file( "freetype-font", DEFAULT_FONT, NULL, FONT_TEXT, FONT_LONGTEXT,
114 add_integer( "freetype-fontsize", 0, NULL, FONTSIZE_TEXT,
115 FONTSIZE_LONGTEXT, VLC_TRUE );
116 /* opacity valid on 0..255, with default 255 = fully opaque */
117 add_integer_with_range( "freetype-opacity", 255, 0, 255, NULL,
118 OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
119 /* hook to the color values list, with default 0x00ffffff = white */
120 add_integer( "freetype-color", 0x00FFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT, VLC_TRUE );
121 change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
123 add_integer( "freetype-rel-fontsize", 16, NULL, FONTSIZER_TEXT,
124 FONTSIZER_LONGTEXT, VLC_FALSE );
125 change_integer_list( pi_sizes, ppsz_sizes_text, 0 );
127 set_capability( "text renderer", 100 );
128 add_shortcut( "text" );
129 set_callbacks( Create, Destroy );
133 * Private data in a subpicture. Describes a string.
135 typedef struct subpicture_data_t
139 /** The string associated with this subpicture */
141 line_desc_t *p_lines;
147 /** NULL-terminated list of glyphs making the string */
148 FT_BitmapGlyph *pp_glyphs;
149 /** list of relative positions for the glyphs */
150 FT_Vector *p_glyph_pos;
156 static void Render ( filter_t *, subpicture_t *, subpicture_data_t *, uint8_t,
158 static void FreeString( subpicture_data_t * );
159 static void FreeLine( line_desc_t * );
161 /*****************************************************************************
162 * filter_sys_t: freetype local data
163 *****************************************************************************
164 * This structure is part of the video output thread descriptor.
165 * It describes the freetype specific properties of an output thread.
166 *****************************************************************************/
169 FT_Library p_library; /* handle to library */
170 FT_Face p_face; /* handle to face object */
171 vlc_bool_t i_use_kerning;
172 uint8_t i_font_opacity; /* freetype-opacity */
173 int i_font_color; /* freetype-color */
174 int i_red, i_blue, i_green; /* function vars to render */
176 uint8_t i_opacity; /* function var to render */
177 uint8_t pi_gamma[256];
180 /*****************************************************************************
181 * Create: allocates osd-text video thread output method
182 *****************************************************************************
183 * This function allocates and initializes a Clone vout method.
184 *****************************************************************************/
185 static int Create( vlc_object_t *p_this )
187 filter_t *p_filter = (filter_t *)p_this;
189 char *psz_fontfile = NULL;
193 /* Allocate structure */
194 p_sys = malloc( sizeof( filter_sys_t ) );
197 msg_Err( p_filter, "out of memory" );
201 p_sys->p_library = 0;
202 p_sys->i_font_size = 0;
204 for( i = 0; i < 256; i++ )
206 p_sys->pi_gamma[i] = (uint8_t)( pow( (double)i * 255.0f, 0.5f ) );
209 var_Create( p_filter, "freetype-font",
210 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
211 var_Create( p_filter, "freetype-fontsize",
212 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
213 var_Create( p_filter, "freetype-rel-fontsize",
214 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
215 var_Create( p_filter, "freetype-opacity", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
216 var_Get( p_filter, "freetype-opacity", &val );
217 p_sys->i_font_opacity = __MAX( __MIN( val.i_int, 255 ), 0 );
218 var_Create( p_filter, "freetype-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
219 var_Get( p_filter, "freetype-color", &val );
220 if ( ( val.i_int > -1 ) && ( val.i_int < 0x01000000 ) ) /* valid range */
222 p_sys->i_font_color = val.i_int;
224 else msg_Warn(p_filter, "Invalid freetype color specified, using white [0xFFFFFF]");
226 /* Look what method was requested */
227 var_Get( p_filter, "freetype-font", &val );
228 psz_fontfile = val.psz_string;
229 if( !psz_fontfile || !*psz_fontfile )
231 if( psz_fontfile ) free( psz_fontfile );
232 psz_fontfile = (char *)malloc( PATH_MAX + 1 );
234 GetWindowsDirectory( psz_fontfile, PATH_MAX + 1 );
235 strcat( psz_fontfile, "\\fonts\\arial.ttf" );
237 strcpy( psz_fontfile, DEFAULT_FONT );
239 msg_Err( p_filter, "user didn't specify a font" );
244 i_error = FT_Init_FreeType( &p_sys->p_library );
247 msg_Err( p_filter, "couldn't initialize freetype" );
251 i_error = FT_New_Face( p_sys->p_library, psz_fontfile ? psz_fontfile : "",
253 if( i_error == FT_Err_Unknown_File_Format )
255 msg_Err( p_filter, "file %s have unknown format", psz_fontfile );
260 msg_Err( p_filter, "failed to load font file %s", psz_fontfile );
264 i_error = FT_Select_Charmap( p_sys->p_face, ft_encoding_unicode );
267 msg_Err( p_filter, "Font has no unicode translation table" );
271 p_sys->i_use_kerning = FT_HAS_KERNING( p_sys->p_face );
274 var_Get( p_filter, "freetype-fontsize", &val );
277 p_sys->i_font_size = val.i_int;
281 var_Get( p_filter, "freetype-rel-fontsize", &val );
282 p_sys->i_font_size = (int)p_filter->fmt_out.video.i_height / val.i_int;
284 if( p_sys->i_font_size <= 0 )
286 msg_Warn( p_filter, "Invalid fontsize, using 12" );
287 p_sys->i_font_size = 12;
289 msg_Dbg( p_filter, "Using fontsize: %i", p_sys->i_font_size);
291 i_error = FT_Set_Pixel_Sizes( p_sys->p_face, 0, p_sys->i_font_size );
294 msg_Err( p_filter, "couldn't set font size to %d", p_sys->i_font_size );
298 if( psz_fontfile ) free( psz_fontfile );
299 p_filter->pf_render_string = RenderText;
300 p_filter->p_sys = p_sys;
304 if( p_sys->p_face ) FT_Done_Face( p_sys->p_face );
305 if( p_sys->p_library ) FT_Done_FreeType( p_sys->p_library );
306 if( psz_fontfile ) free( psz_fontfile );
311 /*****************************************************************************
312 * Destroy: destroy Clone video thread output method
313 *****************************************************************************
314 * Clean up all data and library connections
315 *****************************************************************************/
316 static void Destroy( vlc_object_t *p_this )
318 filter_t *p_filter = (filter_t *)p_this;
319 filter_sys_t *p_sys = p_filter->p_sys;
321 FT_Done_Face( p_sys->p_face );
322 FT_Done_FreeType( p_sys->p_library );
326 /*****************************************************************************
327 * Render: place string in picture
328 *****************************************************************************
329 * This function merges the previously rendered freetype glyphs into a picture
330 *****************************************************************************/
331 static void Render( filter_t *p_filter, subpicture_t *p_spu,
332 subpicture_data_t *p_string, uint8_t opacity,
333 int red, int green, int blue)
335 filter_sys_t *p_sys = p_filter->p_sys;
337 uint8_t *p_y, *p_u, *p_v, *p_a;
339 int i, x, y, i_pitch;
340 uint8_t i_y, i_u, i_v; /* YUV values, derived from incoming RGB */
342 /* calculate text color components: */
343 i_y = (uint8_t) ( ( 66 * red + 129 * green + 25 * blue + 128) >> 8) + 16;
344 i_u = (uint8_t) ( ( -38 * red - 74 * green + 112 * blue + 128) >> 8) + 128;
345 i_v = (uint8_t) ( ( 112 * red - 94 * green - 18 * blue + 128) >> 8) + 128;
347 /* Create a new subpicture region */
348 memset( &fmt, 0, sizeof(video_format_t) );
349 fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
350 fmt.i_aspect = VOUT_ASPECT_FACTOR;
351 fmt.i_width = fmt.i_visible_width = p_string->i_width + 2;
352 fmt.i_height = fmt.i_visible_height = p_string->i_height + 2;
353 fmt.i_x_offset = fmt.i_y_offset = 0;
354 p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
355 if( !p_spu->p_region )
357 msg_Err( p_filter, "cannot allocate SPU region" );
361 p_spu->p_region->i_x = p_spu->p_region->i_y = 0;
362 p_y = p_spu->p_region->picture.Y_PIXELS;
363 p_u = p_spu->p_region->picture.U_PIXELS;
364 p_v = p_spu->p_region->picture.V_PIXELS;
365 p_a = p_spu->p_region->picture.A_PIXELS;
366 i_pitch = p_spu->p_region->picture.Y_PITCH;
368 /* Initialize the region pixels */
369 memset( p_y, 0x00, i_pitch * p_spu->p_region->fmt.i_height );
370 memset( p_u, 0x80, i_pitch * p_spu->p_region->fmt.i_height );
371 memset( p_v, 0x80, i_pitch * p_spu->p_region->fmt.i_height );
372 memset( p_a, 0x00, i_pitch * p_spu->p_region->fmt.i_height );
374 #define pi_gamma p_sys->pi_gamma
376 for( p_line = p_string->p_lines; p_line != NULL; p_line = p_line->p_next )
378 int i_glyph_tmax = 0;
379 int i_bitmap_offset, i_offset;
380 for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
382 FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
383 i_glyph_tmax = __MAX( i_glyph_tmax, p_glyph->top );
386 for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
388 FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
390 i_offset = ( p_line->p_glyph_pos[ i ].y +
391 i_glyph_tmax - p_glyph->top + 1 ) *
392 i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1;
394 for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
396 for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
398 if( !pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]] )
402 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
403 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
404 i_offset += i_pitch; x--;
405 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
406 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
408 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
409 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
410 i_offset += i_pitch; x--;
411 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
412 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
418 i_offset = ( p_line->p_glyph_pos[ i ].y +
419 i_glyph_tmax - p_glyph->top + 1 ) *
420 i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1;
422 for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
424 for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
426 p_y[i_offset + x] = i_y*opacity*pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]]/(256*256);
427 p_u[i_offset + x] = i_u;
428 p_v[i_offset + x] = i_v;
439 * This function receives a string and creates a subpicture for it. It
440 * also calculates the size needed for this string, and renders the
441 * needed glyphs into memory. It is used as pf_add_string callback in
442 * the vout method by this module
444 static subpicture_t *RenderText( filter_t *p_filter, block_t *p_block,
445 int font_color, int font_opacity, int font_size )
447 filter_sys_t *p_sys = p_filter->p_sys;
448 subpicture_t *p_subpic = 0;
449 subpicture_data_t *p_string = 0;
450 line_desc_t *p_line = 0, *p_next = 0, *p_prev = 0;
451 int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous;
452 uint32_t *psz_unicode, *psz_unicode_orig = 0, i_char, *psz_line_start;
455 vlc_iconv_t iconv_handle = (vlc_iconv_t)(-1);
463 if( !p_block ) return NULL;
464 psz_string = p_block->p_buffer;
465 if( !psz_string || !*psz_string ) goto error;
474 /* Create and initialize a subpicture */
475 p_subpic = p_filter->pf_sub_buffer_new( p_filter );
476 if( !p_subpic ) goto error;
478 p_subpic->i_start = p_block->i_pts;
479 p_subpic->i_stop = p_block->i_pts + p_block->i_length;
480 p_subpic->b_ephemer = (p_block->i_length == 0);
481 p_subpic->b_absolute = VLC_FALSE;
483 /* Create and initialize private data for the subpicture */
484 p_string = malloc( sizeof(subpicture_data_t) );
487 msg_Err( p_filter, "out of memory" );
490 p_string->p_lines = 0;
491 p_string->psz_text = strdup( psz_string );
493 psz_unicode = psz_unicode_orig =
494 malloc( ( strlen(psz_string) + 1 ) * sizeof(uint32_t) );
495 if( psz_unicode == NULL )
497 msg_Err( p_filter, "out of memory" );
500 #if defined(WORDS_BIGENDIAN)
501 iconv_handle = vlc_iconv_open( "UCS-4BE", "UTF-8" );
503 iconv_handle = vlc_iconv_open( "UCS-4LE", "UTF-8" );
505 if( iconv_handle == (vlc_iconv_t)-1 )
507 msg_Warn( p_filter, "unable to do conversion" );
511 /* Set up the glyphs for the desired font size. By definition,
512 p_sys->i_font_size is a valid value, else the initial Create would
513 have failed. Using -1 as a flag to use the freetype-fontsize */
516 FT_Set_Pixel_Sizes( p_sys->p_face, 0, p_sys->i_font_size );
520 i_error = FT_Set_Pixel_Sizes( p_sys->p_face, 0, font_size );
523 msg_Warn( p_filter, "Invalid font size to RenderText, using %d",
524 p_sys->i_font_size );
525 FT_Set_Pixel_Sizes( p_sys->p_face, 0, p_sys->i_font_size );
530 char *p_in_buffer, *p_out_buffer;
531 size_t i_in_bytes, i_out_bytes, i_out_bytes_left, i_ret;
532 i_in_bytes = strlen( psz_string );
533 i_out_bytes = i_in_bytes * sizeof( uint32_t );
534 i_out_bytes_left = i_out_bytes;
535 p_in_buffer = psz_string;
536 p_out_buffer = (char *)psz_unicode;
537 i_ret = vlc_iconv( iconv_handle, &p_in_buffer, &i_in_bytes,
538 &p_out_buffer, &i_out_bytes_left );
540 vlc_iconv_close( iconv_handle );
544 msg_Warn( p_filter, "failed to convert string to unicode (%s), "
545 "bytes left %d", strerror(errno), i_in_bytes );
548 *(uint32_t*)p_out_buffer = 0;
549 i_string_length = (i_out_bytes - i_out_bytes_left) / sizeof(uint32_t);
552 #if defined(HAVE_FRIBIDI)
554 uint32_t *p_fribidi_string;
555 FriBidiCharType base_dir = FRIBIDI_TYPE_ON;
556 p_fribidi_string = malloc( (i_string_length + 1) * sizeof(uint32_t) );
557 fribidi_log2vis( (FriBidiChar*)psz_unicode, i_string_length,
558 &base_dir, (FriBidiChar*)p_fribidi_string, 0, 0, 0 );
559 free( psz_unicode_orig );
560 psz_unicode = psz_unicode_orig = p_fribidi_string;
561 p_fribidi_string[ i_string_length ] = 0;
565 /* Calculate relative glyph positions and a bounding box for the
567 p_line = NewLine( psz_string );
570 msg_Err( p_filter, "out of memory" );
573 p_string->p_lines = p_line;
578 psz_line_start = psz_unicode;
580 #define face p_sys->p_face
581 #define glyph face->glyph
583 while( *psz_unicode )
585 i_char = *psz_unicode++;
586 if( i_char == '\r' ) /* ignore CR chars wherever they may be */
593 psz_line_start = psz_unicode;
594 p_next = NewLine( psz_string );
597 msg_Err( p_filter, "out of memory" );
600 p_line->p_next = p_next;
601 p_line->i_width = line.xMax;
602 p_line->i_height = face->size->metrics.height >> 6;
603 p_line->pp_glyphs[ i ] = NULL;
606 result.x = __MAX( result.x, line.xMax );
607 result.y += face->size->metrics.height >> 6;
614 i_pen_y += face->size->metrics.height >> 6;
616 msg_Dbg( p_filter, "Creating new line, i is %d", i );
622 i_glyph_index = FT_Get_Char_Index( face, i_char );
623 if( p_sys->i_use_kerning && i_glyph_index
627 FT_Get_Kerning( face, i_previous, i_glyph_index,
628 ft_kerning_default, &delta );
629 i_pen_x += delta.x >> 6;
632 p_line->p_glyph_pos[ i ].x = i_pen_x;
633 p_line->p_glyph_pos[ i ].y = i_pen_y;
634 i_error = FT_Load_Glyph( face, i_glyph_index, FT_LOAD_DEFAULT );
637 msg_Err( p_filter, "FT_Load_Glyph returned %d", i_error );
640 i_error = FT_Get_Glyph( glyph, &tmp_glyph );
643 msg_Err( p_filter, "FT_Get_Glyph returned %d", i_error );
646 FT_Glyph_Get_CBox( tmp_glyph, ft_glyph_bbox_pixels, &glyph_size );
647 i_error = FT_Glyph_To_Bitmap( &tmp_glyph, ft_render_mode_normal,
649 if( i_error ) continue;
650 p_line->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
653 line.xMax = p_line->p_glyph_pos[i].x + glyph_size.xMax - glyph_size.xMin + ((FT_BitmapGlyph)tmp_glyph)->left;
654 if( line.xMax > p_filter->fmt_out.video.i_visible_width - 20 )
656 p_line->pp_glyphs[ i ] = NULL;
658 p_line = NewLine( psz_string );
661 p_prev->p_next = p_line;
665 p_string->p_lines = p_line;
667 while( psz_unicode > psz_line_start && *psz_unicode != ' ' )
671 if( psz_unicode == psz_line_start )
673 msg_Warn( p_filter, "unbreakable string" );
681 psz_unicode = psz_line_start;
691 line.yMax = __MAX( line.yMax, glyph_size.yMax );
692 line.yMin = __MIN( line.yMin, glyph_size.yMin );
694 i_previous = i_glyph_index;
695 i_pen_x += glyph->advance.x >> 6;
699 p_line->i_width = line.xMax;
700 p_line->i_height = face->size->metrics.height >> 6;
701 p_line->pp_glyphs[ i ] = NULL;
702 result.x = __MAX( result.x, line.xMax );
703 result.y += line.yMax - line.yMin;
704 p_string->i_height = result.y;
705 p_string->i_width = result.x;
709 /* check to see whether to use the default color/opacity, or another one: */
712 p_sys->i_blue = p_sys->i_font_color & 0x000000FF;
713 p_sys->i_green = (p_sys->i_font_color & 0x0000FF00)/256;
714 p_sys->i_red = (p_sys->i_font_color & 0x00FF0000)/(256*256);
718 p_sys->i_blue = font_color & 0x000000FF;
719 p_sys->i_green = (font_color & 0x0000FF00)/256;
720 p_sys->i_red = (font_color & 0x00FF0000)/(256*256);
722 if( font_opacity < 0 )
724 p_sys->i_opacity = p_sys->i_font_opacity;
728 p_sys->i_opacity = (uint8_t) ( font_opacity & 0x000000FF );
731 Render( p_filter, p_subpic, p_string, p_sys->i_opacity,
732 p_sys->i_red, p_sys->i_green, p_sys->i_blue );
733 FreeString( p_string );
734 block_Release( p_block );
735 if( psz_unicode_orig ) free( psz_unicode_orig );
739 FreeString( p_string );
740 if( p_subpic ) p_filter->pf_sub_buffer_del( p_filter, p_subpic );
741 block_Release( p_block );
742 if( psz_unicode_orig ) free( psz_unicode_orig );
746 static void FreeLine( line_desc_t *p_line )
749 for( i = 0; p_line->pp_glyphs[ i ] != NULL; i++ )
751 FT_Done_Glyph( (FT_Glyph)p_line->pp_glyphs[ i ] );
753 free( p_line->pp_glyphs );
754 free( p_line->p_glyph_pos );
758 static void FreeString( subpicture_data_t *p_string )
760 line_desc_t *p_line, *p_next;
762 if( !p_string ) return;
764 for( p_line = p_string->p_lines; p_line != NULL; p_line = p_next )
766 p_next = p_line->p_next;
770 free( p_string->psz_text );
774 static line_desc_t *NewLine( byte_t *psz_string )
777 line_desc_t *p_line = malloc( sizeof(line_desc_t) );
782 p_line->i_height = 0;
784 p_line->p_next = NULL;
786 /* We don't use CountUtf8Characters() here because we are not acutally
787 * sure the string is utf8. Better be safe than sorry. */
788 i_count = strlen( psz_string );
790 p_line->pp_glyphs = malloc( sizeof(FT_BitmapGlyph)
792 if( p_line->pp_glyphs == NULL )
797 p_line->pp_glyphs[0] = NULL;
799 p_line->p_glyph_pos = malloc( sizeof( FT_Vector )
801 if( p_line->p_glyph_pos == NULL )
803 free( p_line->pp_glyphs );