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 int RenderText( filter_t *, subpicture_region_t *,
75 subpicture_region_t * );
76 static line_desc_t *NewLine( byte_t * );
78 static int SetFontSize( filter_t *, int );
80 /*****************************************************************************
82 *****************************************************************************/
83 #define FONT_TEXT N_("Font")
84 #define FONT_LONGTEXT N_("Font filename")
85 #define FONTSIZE_TEXT N_("Font size in pixels")
86 #define FONTSIZE_LONGTEXT N_("The size of the fonts used by the osd module. " \
87 "If set to something different than 0 this option will override the " \
88 "relative font size " )
89 #define OPACITY_TEXT N_("Opacity, 0..255")
90 #define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of " \
91 "overlay text. 0 = transparent, 255 = totally opaque. " )
92 #define COLOR_TEXT N_("Text Default Color")
93 #define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, "\
94 "hexadecimal. #000000 = all colors off, 0xFF0000 = just Red, " \
95 "0xFFFFFF = all color on [White]" )
96 #define FONTSIZER_TEXT N_("Font size")
97 #define FONTSIZER_LONGTEXT N_("The size of the fonts used by the osd module" )
99 static int pi_sizes[] = { 20, 18, 16, 12, 6 };
100 static char *ppsz_sizes_text[] = { N_("Smaller"), N_("Small"), N_("Normal"),
101 N_("Large"), N_("Larger") };
102 static int pi_color_values[] = {
103 0x00000000, 0x00808080, 0x00C0C0C0, 0x00FFFFFF, 0x00800000,
104 0x00FF0000, 0x00FF00FF, 0x00FFFF00, 0x00808000, 0x00008000, 0x00008080,
105 0x0000FF00, 0x00800080, 0x00000080, 0x000000FF, 0x0000FFFF };
107 static char *ppsz_color_descriptions[] = {
108 N_("Black"), N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"),
109 N_("Red"), N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"), N_("Teal"),
110 N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"), N_("Aqua") };
113 set_shortname( _("Text renderer"));
114 set_description( _("Freetype2 font renderer") );
115 set_category( CAT_VIDEO );
116 set_subcategory( SUBCAT_VIDEO_SUBPIC );
118 add_file( "freetype-font", DEFAULT_FONT, NULL, FONT_TEXT, FONT_LONGTEXT,
121 add_integer( "freetype-fontsize", 0, NULL, FONTSIZE_TEXT,
122 FONTSIZE_LONGTEXT, VLC_TRUE );
124 /* opacity valid on 0..255, with default 255 = fully opaque */
125 add_integer_with_range( "freetype-opacity", 255, 0, 255, NULL,
126 OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
128 /* hook to the color values list, with default 0x00ffffff = white */
129 add_integer( "freetype-color", 0x00FFFFFF, NULL, COLOR_TEXT,
130 COLOR_LONGTEXT, VLC_TRUE );
131 change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
133 add_integer( "freetype-rel-fontsize", 16, NULL, FONTSIZER_TEXT,
134 FONTSIZER_LONGTEXT, VLC_FALSE );
135 change_integer_list( pi_sizes, ppsz_sizes_text, 0 );
137 set_capability( "text renderer", 100 );
138 add_shortcut( "text" );
139 set_callbacks( Create, Destroy );
144 /** NULL-terminated list of glyphs making the string */
145 FT_BitmapGlyph *pp_glyphs;
146 /** list of relative positions for the glyphs */
147 FT_Vector *p_glyph_pos;
151 int i_red, i_green, i_blue;
157 static int Render( filter_t *, subpicture_region_t *, line_desc_t *, int, int);
158 static void FreeLines( line_desc_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;
176 int i_default_font_size;
177 int i_display_height;
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_filter->p_sys = 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;
203 p_sys->i_display_height = 0;
205 var_Create( p_filter, "freetype-font",
206 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
207 var_Create( p_filter, "freetype-fontsize",
208 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
209 var_Create( p_filter, "freetype-rel-fontsize",
210 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
211 var_Create( p_filter, "freetype-opacity",
212 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
213 var_Get( p_filter, "freetype-opacity", &val );
214 p_sys->i_font_opacity = __MAX( __MIN( val.i_int, 255 ), 0 );
215 var_Create( p_filter, "freetype-color",
216 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
217 var_Get( p_filter, "freetype-color", &val );
218 p_sys->i_font_color = __MAX( __MIN( val.i_int, 0xFFFFFF ), 0 );
220 /* Look what method was requested */
221 var_Get( p_filter, "freetype-font", &val );
222 psz_fontfile = val.psz_string;
223 if( !psz_fontfile || !*psz_fontfile )
225 if( psz_fontfile ) free( psz_fontfile );
226 psz_fontfile = (char *)malloc( PATH_MAX + 1 );
228 GetWindowsDirectory( psz_fontfile, PATH_MAX + 1 );
229 strcat( psz_fontfile, "\\fonts\\arial.ttf" );
231 strcpy( psz_fontfile, DEFAULT_FONT );
233 msg_Err( p_filter, "user didn't specify a font" );
238 i_error = FT_Init_FreeType( &p_sys->p_library );
241 msg_Err( p_filter, "couldn't initialize freetype" );
245 i_error = FT_New_Face( p_sys->p_library, psz_fontfile ? psz_fontfile : "",
247 if( i_error == FT_Err_Unknown_File_Format )
249 msg_Err( p_filter, "file %s have unknown format", psz_fontfile );
254 msg_Err( p_filter, "failed to load font file %s", psz_fontfile );
258 i_error = FT_Select_Charmap( p_sys->p_face, ft_encoding_unicode );
261 msg_Err( p_filter, "Font has no unicode translation table" );
265 p_sys->i_use_kerning = FT_HAS_KERNING( p_sys->p_face );
267 var_Get( p_filter, "freetype-fontsize", &val );
268 p_sys->i_default_font_size = val.i_int;
269 if( SetFontSize( p_filter, 0 ) != VLC_SUCCESS ) goto error;
271 if( psz_fontfile ) free( psz_fontfile );
272 p_filter->pf_render_text = RenderText;
276 if( p_sys->p_face ) FT_Done_Face( p_sys->p_face );
277 if( p_sys->p_library ) FT_Done_FreeType( p_sys->p_library );
278 if( psz_fontfile ) free( psz_fontfile );
283 /*****************************************************************************
284 * Destroy: destroy Clone video thread output method
285 *****************************************************************************
286 * Clean up all data and library connections
287 *****************************************************************************/
288 static void Destroy( vlc_object_t *p_this )
290 filter_t *p_filter = (filter_t *)p_this;
291 filter_sys_t *p_sys = p_filter->p_sys;
293 FT_Done_Face( p_sys->p_face );
294 FT_Done_FreeType( p_sys->p_library );
298 /*****************************************************************************
299 * Render: place string in picture
300 *****************************************************************************
301 * This function merges the previously rendered freetype glyphs into a picture
302 *****************************************************************************/
303 static int Render( filter_t *p_filter, subpicture_region_t *p_region,
304 line_desc_t *p_line, int i_width, int i_height )
308 int i, x, y, i_pitch;
309 uint8_t i_y; /* YUV values, derived from incoming RGB */
311 subpicture_region_t *p_region_tmp;
313 /* Create a new subpicture region */
314 memset( &fmt, 0, sizeof(video_format_t) );
315 fmt.i_chroma = VLC_FOURCC('Y','U','V','P');
316 fmt.i_aspect = VOUT_ASPECT_FACTOR;
317 fmt.i_width = fmt.i_visible_width = i_width + 2;
318 fmt.i_height = fmt.i_visible_height = i_height + 2;
319 fmt.i_x_offset = fmt.i_y_offset = 0;
320 p_region_tmp = spu_CreateRegion( p_filter, &fmt );
323 msg_Err( p_filter, "cannot allocate SPU region" );
327 p_region->fmt = p_region_tmp->fmt;
328 p_region->picture = p_region_tmp->picture;
329 free( p_region_tmp );
331 /* Calculate text color components */
332 i_y = (uint8_t)(( 66 * p_line->i_red + 129 * p_line->i_green +
333 25 * p_line->i_blue + 128) >> 8) + 16;
334 i_u = (int8_t)(( -38 * p_line->i_red - 74 * p_line->i_green +
335 112 * p_line->i_blue + 128) >> 8) + 128;
336 i_v = (int8_t)(( 112 * p_line->i_red - 94 * p_line->i_green -
337 18 * p_line->i_blue + 128) >> 8) + 128;
340 fmt.p_palette->i_entries = 256;
341 for( i = 0; i < fmt.p_palette->i_entries; i++ )
343 fmt.p_palette->palette[i][0] = i * i_y / 256;
344 fmt.p_palette->palette[i][1] = i_u;
345 fmt.p_palette->palette[i][2] = i_v;
346 fmt.p_palette->palette[i][3] = i + (255 - i) / 16;
347 fmt.p_palette->palette[i][3] =
348 (int)fmt.p_palette->palette[i][3] * (255 - p_line->i_alpha) / 255;
350 fmt.p_palette->palette[0][3] = 0;
352 p_dst = p_region->picture.Y_PIXELS;
353 i_pitch = p_region->picture.Y_PITCH;
355 /* Initialize the region pixels */
356 memset( p_dst, 0, i_pitch * p_region->fmt.i_height );
358 for( ; p_line != NULL; p_line = p_line->p_next )
360 int i_glyph_tmax = 0;
361 int i_bitmap_offset, i_offset, i_align_offset = 0;
362 for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
364 FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
365 i_glyph_tmax = __MAX( i_glyph_tmax, p_glyph->top );
368 if( p_line->i_width < i_width )
370 if( p_region->i_text_align == SUBPICTURE_ALIGN_RIGHT )
372 i_align_offset = i_width - p_line->i_width;
374 else if( p_region->i_text_align != SUBPICTURE_ALIGN_LEFT )
376 i_align_offset = ( i_width - p_line->i_width ) / 2;
379 for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
381 FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
383 i_offset = ( p_line->p_glyph_pos[ i ].y +
384 i_glyph_tmax - p_glyph->top + 1 ) *
385 i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1 +
388 for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
390 for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
392 if( !p_glyph->bitmap.buffer[i_bitmap_offset] )
396 p_dst[i_offset + x] = ((uint16_t)p_dst[i_offset + x]*2 +
397 p_glyph->bitmap.buffer[i_bitmap_offset])/3;
398 i_offset += i_pitch; x--;
399 p_dst[i_offset + x] = ((uint16_t)p_dst[i_offset + x]*2 +
400 p_glyph->bitmap.buffer[i_bitmap_offset])/3;
402 p_dst[i_offset + x] = ((uint16_t)p_dst[i_offset + x]*2 +
403 p_glyph->bitmap.buffer[i_bitmap_offset])/3;
404 i_offset += i_pitch; x--;
405 p_dst[i_offset + x] = ((uint16_t)p_dst[i_offset + x]*2 +
406 p_glyph->bitmap.buffer[i_bitmap_offset])/3;
412 i_offset = ( p_line->p_glyph_pos[ i ].y +
413 i_glyph_tmax - p_glyph->top + 1 ) *
414 i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1 +
417 for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
419 for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
421 if( p_glyph->bitmap.buffer[i_bitmap_offset] > 16 )
422 p_dst[i_offset+x] = p_glyph->bitmap.buffer[i_bitmap_offset];
433 * This function renders a text subpicture region into another one.
434 * It also calculates the size needed for this string, and renders the
435 * needed glyphs into memory. It is used as pf_add_string callback in
436 * the vout method by this module
438 static int RenderText( filter_t *p_filter, subpicture_region_t *p_region_out,
439 subpicture_region_t *p_region_in )
441 filter_sys_t *p_sys = p_filter->p_sys;
442 line_desc_t *p_lines = 0, *p_line = 0, *p_next = 0, *p_prev = 0;
443 int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous;
444 uint32_t *psz_unicode, *psz_unicode_orig = 0, i_char, *psz_line_start;
447 vlc_iconv_t iconv_handle = (vlc_iconv_t)(-1);
448 int i_font_color, i_font_alpha, i_font_size, i_red, i_green, i_blue;
456 if( !p_region_in || !p_region_out ) return VLC_EGENERIC;
457 psz_string = p_region_in->psz_text;
458 if( !psz_string || !*psz_string ) return VLC_EGENERIC;
460 i_font_color = __MAX( __MIN( p_region_in->i_text_color, 0xFFFFFF ), 0 );
461 if( i_font_color == 0xFFFFFF ) i_font_color = p_sys->i_font_color;
463 i_font_alpha = __MAX( __MIN( p_region_in->i_text_alpha, 255 ), 0 );
464 if( !i_font_alpha ) i_font_alpha = 255 - p_sys->i_font_opacity;
466 i_font_size = __MAX( __MIN( p_region_in->i_text_size, 255 ), 0 );
467 SetFontSize( p_filter, i_font_size );
469 i_red = ( i_font_color & 0x00FF0000 ) >> 16;
470 i_green = ( i_font_color & 0x0000FF00 ) >> 8;
471 i_blue = i_font_color & 0x000000FF;
473 result.x = result.y = 0;
474 line.xMin = line.xMax = line.yMin = line.yMax = 0;
476 psz_unicode = psz_unicode_orig =
477 malloc( ( strlen(psz_string) + 1 ) * sizeof(uint32_t) );
478 if( psz_unicode == NULL )
480 msg_Err( p_filter, "out of memory" );
483 #if defined(WORDS_BIGENDIAN)
484 iconv_handle = vlc_iconv_open( "UCS-4BE", "UTF-8" );
486 iconv_handle = vlc_iconv_open( "UCS-4LE", "UTF-8" );
488 if( iconv_handle == (vlc_iconv_t)-1 )
490 msg_Warn( p_filter, "unable to do conversion" );
495 char *p_in_buffer, *p_out_buffer;
496 size_t i_in_bytes, i_out_bytes, i_out_bytes_left, i_ret;
497 i_in_bytes = strlen( psz_string );
498 i_out_bytes = i_in_bytes * sizeof( uint32_t );
499 i_out_bytes_left = i_out_bytes;
500 p_in_buffer = psz_string;
501 p_out_buffer = (char *)psz_unicode;
502 i_ret = vlc_iconv( iconv_handle, &p_in_buffer, &i_in_bytes,
503 &p_out_buffer, &i_out_bytes_left );
505 vlc_iconv_close( iconv_handle );
509 msg_Warn( p_filter, "failed to convert string to unicode (%s), "
510 "bytes left %d", strerror(errno), i_in_bytes );
513 *(uint32_t*)p_out_buffer = 0;
514 i_string_length = (i_out_bytes - i_out_bytes_left) / sizeof(uint32_t);
517 #if defined(HAVE_FRIBIDI)
519 uint32_t *p_fribidi_string;
520 FriBidiCharType base_dir = FRIBIDI_TYPE_ON;
521 p_fribidi_string = malloc( (i_string_length + 1) * sizeof(uint32_t) );
522 fribidi_log2vis( (FriBidiChar*)psz_unicode, i_string_length,
523 &base_dir, (FriBidiChar*)p_fribidi_string, 0, 0, 0 );
524 free( psz_unicode_orig );
525 psz_unicode = psz_unicode_orig = p_fribidi_string;
526 p_fribidi_string[ i_string_length ] = 0;
530 /* Calculate relative glyph positions and a bounding box for the
532 if( !(p_line = NewLine( psz_string )) )
534 msg_Err( p_filter, "out of memory" );
538 i_pen_x = i_pen_y = 0;
540 psz_line_start = psz_unicode;
542 #define face p_sys->p_face
543 #define glyph face->glyph
545 while( *psz_unicode )
547 i_char = *psz_unicode++;
548 if( i_char == '\r' ) /* ignore CR chars wherever they may be */
555 psz_line_start = psz_unicode;
556 if( !(p_next = NewLine( psz_string )) )
558 msg_Err( p_filter, "out of memory" );
561 p_line->p_next = p_next;
562 p_line->i_width = line.xMax;
563 p_line->i_height = face->size->metrics.height >> 6;
564 p_line->pp_glyphs[ i ] = NULL;
565 p_line->i_alpha = i_font_alpha;
566 p_line->i_red = i_red;
567 p_line->i_green = i_green;
568 p_line->i_blue = i_blue;
571 result.x = __MAX( result.x, line.xMax );
572 result.y += face->size->metrics.height >> 6;
575 line.xMin = line.xMax = line.yMin = line.yMax = 0;
576 i_pen_y += face->size->metrics.height >> 6;
578 msg_Dbg( p_filter, "Creating new line, i is %d", i );
583 i_glyph_index = FT_Get_Char_Index( face, i_char );
584 if( p_sys->i_use_kerning && i_glyph_index
588 FT_Get_Kerning( face, i_previous, i_glyph_index,
589 ft_kerning_default, &delta );
590 i_pen_x += delta.x >> 6;
593 p_line->p_glyph_pos[ i ].x = i_pen_x;
594 p_line->p_glyph_pos[ i ].y = i_pen_y;
595 i_error = FT_Load_Glyph( face, i_glyph_index, FT_LOAD_DEFAULT );
598 msg_Err( p_filter, "FT_Load_Glyph returned %d", i_error );
601 i_error = FT_Get_Glyph( glyph, &tmp_glyph );
604 msg_Err( p_filter, "FT_Get_Glyph returned %d", i_error );
607 FT_Glyph_Get_CBox( tmp_glyph, ft_glyph_bbox_pixels, &glyph_size );
608 i_error = FT_Glyph_To_Bitmap( &tmp_glyph, ft_render_mode_normal, 0, 1);
609 if( i_error ) continue;
610 p_line->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
613 line.xMax = p_line->p_glyph_pos[i].x + glyph_size.xMax -
614 glyph_size.xMin + ((FT_BitmapGlyph)tmp_glyph)->left;
615 if( line.xMax > (int)p_filter->fmt_out.video.i_visible_width - 20 )
617 p_line->pp_glyphs[ i ] = NULL;
619 p_line = NewLine( psz_string );
620 if( p_prev ) p_prev->p_next = p_line;
621 else p_lines = p_line;
623 while( psz_unicode > psz_line_start && *psz_unicode != ' ' )
627 if( psz_unicode == psz_line_start )
629 msg_Warn( p_filter, "unbreakable string" );
636 psz_unicode = psz_line_start;
639 line.xMin = line.xMax = line.yMin = line.yMax = 0;
642 line.yMax = __MAX( line.yMax, glyph_size.yMax );
643 line.yMin = __MIN( line.yMin, glyph_size.yMin );
645 i_previous = i_glyph_index;
646 i_pen_x += glyph->advance.x >> 6;
650 p_line->i_width = line.xMax;
651 p_line->i_height = face->size->metrics.height >> 6;
652 p_line->pp_glyphs[ i ] = NULL;
653 p_line->i_alpha = i_font_alpha;
654 p_line->i_red = i_red;
655 p_line->i_green = i_green;
656 p_line->i_blue = i_blue;
657 result.x = __MAX( result.x, line.xMax );
658 result.y += line.yMax - line.yMin;
663 p_region_out->i_x = p_region_in->i_x;
664 p_region_out->i_y = p_region_in->i_y;
666 Render( p_filter, p_region_out, p_lines, result.x, result.y );
668 if( psz_unicode_orig ) free( psz_unicode_orig );
669 FreeLines( p_lines );
673 if( psz_unicode_orig ) free( psz_unicode_orig );
674 FreeLines( p_lines );
678 static void FreeLine( line_desc_t *p_line )
681 for( i = 0; p_line->pp_glyphs[ i ] != NULL; i++ )
683 FT_Done_Glyph( (FT_Glyph)p_line->pp_glyphs[ i ] );
685 free( p_line->pp_glyphs );
686 free( p_line->p_glyph_pos );
690 static void FreeLines( line_desc_t *p_lines )
692 line_desc_t *p_line, *p_next;
694 if( !p_lines ) return;
696 for( p_line = p_lines; p_line != NULL; p_line = p_next )
698 p_next = p_line->p_next;
703 static line_desc_t *NewLine( byte_t *psz_string )
706 line_desc_t *p_line = malloc( sizeof(line_desc_t) );
708 if( !p_line ) return NULL;
709 p_line->i_height = 0;
711 p_line->p_next = NULL;
713 /* We don't use CountUtf8Characters() here because we are not acutally
714 * sure the string is utf8. Better be safe than sorry. */
715 i_count = strlen( psz_string );
717 p_line->pp_glyphs = malloc( sizeof(FT_BitmapGlyph) * ( i_count + 1 ) );
718 if( p_line->pp_glyphs == NULL )
723 p_line->pp_glyphs[0] = NULL;
725 p_line->p_glyph_pos = malloc( sizeof( FT_Vector ) * i_count + 1 );
726 if( p_line->p_glyph_pos == NULL )
728 free( p_line->pp_glyphs );
736 static int SetFontSize( filter_t *p_filter, int i_size )
738 filter_sys_t *p_sys = p_filter->p_sys;
740 if( i_size && i_size == p_sys->i_font_size ) return VLC_SUCCESS;
746 if( !p_sys->i_default_font_size &&
747 p_sys->i_display_height == (int)p_filter->fmt_out.video.i_height )
750 if( p_sys->i_default_font_size )
752 i_size = p_sys->i_default_font_size;
756 var_Get( p_filter, "freetype-rel-fontsize", &val );
757 i_size = (int)p_filter->fmt_out.video.i_height / val.i_int;
758 p_filter->p_sys->i_display_height =
759 p_filter->fmt_out.video.i_height;
763 msg_Warn( p_filter, "Invalid fontsize, using 12" );
767 msg_Dbg( p_filter, "Using fontsize: %i", i_size );
770 p_sys->i_font_size = i_size;
772 if( FT_Set_Pixel_Sizes( p_sys->p_face, 0, i_size ) )
774 msg_Err( p_filter, "couldn't set font size to %d", i_size );