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 );
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_description( _("freetype2 font renderer") );
108 set_category( CAT_VIDEO );
109 set_subcategory( SUBCAT_VIDEO_TEXT );
111 add_file( "freetype-font", DEFAULT_FONT, NULL, FONT_TEXT, FONT_LONGTEXT,
113 add_integer( "freetype-fontsize", 0, NULL, FONTSIZE_TEXT,
114 FONTSIZE_LONGTEXT, VLC_TRUE );
115 /* opacity valid on 0..255, with default 255 = fully opaque */
116 add_integer_with_range( "freetype-opacity", 255, 0, 255, NULL,
117 OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
118 /* hook to the color values list, with default 0x00ffffff = white */
119 add_integer( "freetype-color", 0x00FFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT, VLC_TRUE );
120 change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
122 add_integer( "freetype-rel-fontsize", 16, NULL, FONTSIZER_TEXT,
123 FONTSIZER_LONGTEXT, VLC_FALSE );
124 change_integer_list( pi_sizes, ppsz_sizes_text, 0 );
126 set_capability( "text renderer", 100 );
127 add_shortcut( "text" );
128 set_callbacks( Create, Destroy );
132 * Private data in a subpicture. Describes a string.
134 typedef struct subpicture_data_t
138 /** The string associated with this subpicture */
140 line_desc_t *p_lines;
146 /** NULL-terminated list of glyphs making the string */
147 FT_BitmapGlyph *pp_glyphs;
148 /** list of relative positions for the glyphs */
149 FT_Vector *p_glyph_pos;
155 static void Render ( filter_t *, subpicture_t *, subpicture_data_t *, uint8_t,
157 static void FreeString( subpicture_data_t * );
158 static void FreeLine( line_desc_t * );
160 /*****************************************************************************
161 * filter_sys_t: freetype local data
162 *****************************************************************************
163 * This structure is part of the video output thread descriptor.
164 * It describes the freetype specific properties of an output thread.
165 *****************************************************************************/
168 FT_Library p_library; /* handle to library */
169 FT_Face p_face; /* handle to face object */
170 vlc_bool_t i_use_kerning;
171 uint8_t i_font_opacity; /* freetype-opacity */
172 int i_font_color; /* freetype-color */
173 int i_red, i_blue, i_green; /* function vars to render */
174 uint8_t i_opacity; /* function var to render */
175 uint8_t pi_gamma[256];
178 /*****************************************************************************
179 * Create: allocates osd-text video thread output method
180 *****************************************************************************
181 * This function allocates and initializes a Clone vout method.
182 *****************************************************************************/
183 static int Create( vlc_object_t *p_this )
185 filter_t *p_filter = (filter_t *)p_this;
187 char *psz_fontfile = NULL;
192 /* Allocate structure */
193 p_sys = malloc( sizeof( filter_sys_t ) );
196 msg_Err( p_filter, "out of memory" );
200 p_sys->p_library = 0;
202 for( i = 0; i < 256; i++ )
204 p_sys->pi_gamma[i] = (uint8_t)( pow( (double)i * 255.0f, 0.5f ) );
207 var_Create( p_filter, "freetype-font",
208 VLC_VAR_STRING | VLC_VAR_DOINHERIT );
209 var_Create( p_filter, "freetype-fontsize",
210 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
211 var_Create( p_filter, "freetype-rel-fontsize",
212 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
213 var_Create( p_filter, "freetype-opacity", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
214 var_Get( p_filter, "freetype-opacity", &val );
215 p_sys->i_font_opacity = __MAX( __MIN( val.i_int, 255 ), 0 );
216 var_Create( p_filter, "freetype-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
217 var_Get( p_filter, "freetype-color", &val );
218 if ( ( val.i_int > -1 ) && ( val.i_int < 0x00FFFFFF ) ) /* valid range */
220 p_sys->i_font_color = val.i_int;
222 else msg_Warn(p_filter, "Invalid freetype color specified, using white [0xFFFFFF]");
224 /* Look what method was requested */
225 var_Get( p_filter, "freetype-font", &val );
226 psz_fontfile = val.psz_string;
227 if( !psz_fontfile || !*psz_fontfile )
229 if( psz_fontfile ) free( psz_fontfile );
230 psz_fontfile = (char *)malloc( PATH_MAX + 1 );
232 GetWindowsDirectory( psz_fontfile, PATH_MAX + 1 );
233 strcat( psz_fontfile, "\\fonts\\arial.ttf" );
235 strcpy( psz_fontfile, DEFAULT_FONT );
237 msg_Err( p_filter, "user didn't specify a font" );
242 i_error = FT_Init_FreeType( &p_sys->p_library );
245 msg_Err( p_filter, "couldn't initialize freetype" );
249 i_error = FT_New_Face( p_sys->p_library, psz_fontfile ? psz_fontfile : "",
251 if( i_error == FT_Err_Unknown_File_Format )
253 msg_Err( p_filter, "file %s have unknown format", psz_fontfile );
258 msg_Err( p_filter, "failed to load font file %s", psz_fontfile );
262 i_error = FT_Select_Charmap( p_sys->p_face, ft_encoding_unicode );
265 msg_Err( p_filter, "Font has no unicode translation table" );
269 p_sys->i_use_kerning = FT_HAS_KERNING( p_sys->p_face );
272 var_Get( p_filter, "freetype-fontsize", &val );
275 i_fontsize = val.i_int;
279 var_Get( p_filter, "freetype-rel-fontsize", &val );
280 i_fontsize = (int)p_filter->fmt_out.video.i_height / val.i_int;
282 if( i_fontsize <= 0 )
284 msg_Warn( p_filter, "Invalid fontsize, using 12" );
287 msg_Dbg( p_filter, "Using fontsize: %i", i_fontsize);
289 i_error = FT_Set_Pixel_Sizes( p_sys->p_face, 0, i_fontsize );
292 msg_Err( p_filter, "couldn't set font size to %d", i_fontsize );
296 if( psz_fontfile ) free( psz_fontfile );
297 p_filter->pf_render_string = RenderText;
298 p_filter->p_sys = p_sys;
302 if( p_sys->p_face ) FT_Done_Face( p_sys->p_face );
303 if( p_sys->p_library ) FT_Done_FreeType( p_sys->p_library );
304 if( psz_fontfile ) free( psz_fontfile );
309 /*****************************************************************************
310 * Destroy: destroy Clone video thread output method
311 *****************************************************************************
312 * Clean up all data and library connections
313 *****************************************************************************/
314 static void Destroy( vlc_object_t *p_this )
316 filter_t *p_filter = (filter_t *)p_this;
317 filter_sys_t *p_sys = p_filter->p_sys;
319 FT_Done_Face( p_sys->p_face );
320 FT_Done_FreeType( p_sys->p_library );
324 /*****************************************************************************
325 * Render: place string in picture
326 *****************************************************************************
327 * This function merges the previously rendered freetype glyphs into a picture
328 *****************************************************************************/
329 static void Render( filter_t *p_filter, subpicture_t *p_spu,
330 subpicture_data_t *p_string, uint8_t opacity,
331 int red, int green, int blue )
333 filter_sys_t *p_sys = p_filter->p_sys;
335 uint8_t *p_y, *p_u, *p_v, *p_a;
337 int i, x, y, i_pitch;
338 uint8_t i_y, i_u, i_v; /* YUV values, derived from incoming RGB */
340 /* calculate text color components: */
341 i_y = (uint8_t) ( ( 66 * red + 129 * green + 25 * blue + 128) >> 8) + 16;
342 i_u = (uint8_t) ( ( -38 * red - 74 * green + 112 * blue + 128) >> 8) + 128;
343 i_v = (uint8_t) ( ( 112 * red - 94 * green - 18 * blue + 128) >> 8) + 128;
345 /* Create a new subpicture region */
346 memset( &fmt, 0, sizeof(video_format_t) );
347 fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
348 fmt.i_aspect = VOUT_ASPECT_FACTOR;
349 fmt.i_width = fmt.i_visible_width = p_string->i_width + 2;
350 fmt.i_height = fmt.i_visible_height = p_string->i_height + 2;
351 fmt.i_x_offset = fmt.i_y_offset = 0;
352 p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
353 if( !p_spu->p_region )
355 msg_Err( p_filter, "cannot allocate SPU region" );
359 p_spu->p_region->i_x = p_spu->p_region->i_y = 0;
360 p_y = p_spu->p_region->picture.Y_PIXELS;
361 p_u = p_spu->p_region->picture.U_PIXELS;
362 p_v = p_spu->p_region->picture.V_PIXELS;
363 p_a = p_spu->p_region->picture.A_PIXELS;
364 i_pitch = p_spu->p_region->picture.Y_PITCH;
366 /* Initialize the region pixels */
367 memset( p_y, 0x00, i_pitch * p_spu->p_region->fmt.i_height );
368 memset( p_u, 0x80, i_pitch * p_spu->p_region->fmt.i_height );
369 memset( p_v, 0x80, i_pitch * p_spu->p_region->fmt.i_height );
370 memset( p_a, 0x00, i_pitch * p_spu->p_region->fmt.i_height );
372 #define pi_gamma p_sys->pi_gamma
374 for( p_line = p_string->p_lines; p_line != NULL; p_line = p_line->p_next )
376 int i_glyph_tmax = 0;
377 int i_bitmap_offset, i_offset;
378 for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
380 FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
381 i_glyph_tmax = __MAX( i_glyph_tmax, p_glyph->top );
384 for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
386 FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
388 i_offset = ( p_line->p_glyph_pos[ i ].y +
389 i_glyph_tmax - p_glyph->top + 1 ) *
390 i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1;
392 for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
394 for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
396 if( !pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]] )
400 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
401 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
402 i_offset += i_pitch; x--;
403 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
404 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
406 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
407 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
408 i_offset += i_pitch; x--;
409 p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
410 pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
416 i_offset = ( p_line->p_glyph_pos[ i ].y +
417 i_glyph_tmax - p_glyph->top + 1 ) *
418 i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1;
420 for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
422 for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
424 p_y[i_offset + x] = i_y*opacity*pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]]/(256*256);
425 p_u[i_offset + x] = i_u;
426 p_v[i_offset + x] = i_v;
437 * This function receives a string and creates a subpicture for it. It
438 * also calculates the size needed for this string, and renders the
439 * needed glyphs into memory. It is used as pf_add_string callback in
440 * the vout method by this module
442 static subpicture_t *RenderText( filter_t *p_filter, block_t *p_block,
443 int font_color, int font_opacity )
445 filter_sys_t *p_sys = p_filter->p_sys;
446 subpicture_t *p_subpic = 0;
447 subpicture_data_t *p_string = 0;
448 line_desc_t *p_line = 0, *p_next = 0, *p_prev = 0;
449 int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous;
450 uint32_t *psz_unicode, *psz_unicode_orig = 0, i_char, *psz_line_start;
453 vlc_iconv_t iconv_handle = (vlc_iconv_t)(-1);
461 if( !p_block ) return NULL;
462 psz_string = p_block->p_buffer;
463 if( !psz_string || !*psz_string ) goto error;
472 /* Create and initialize a subpicture */
473 p_subpic = p_filter->pf_sub_buffer_new( p_filter );
474 if( !p_subpic ) goto error;
476 p_subpic->i_start = p_block->i_pts;
477 p_subpic->i_stop = p_block->i_pts + p_block->i_length;
478 p_subpic->b_ephemer = (p_block->i_length == 0);
479 p_subpic->b_absolute = VLC_FALSE;
481 /* Create and initialize private data for the subpicture */
482 p_string = malloc( sizeof(subpicture_data_t) );
485 msg_Err( p_filter, "out of memory" );
488 p_string->p_lines = 0;
489 p_string->psz_text = strdup( psz_string );
491 psz_unicode = psz_unicode_orig =
492 malloc( ( strlen(psz_string) + 1 ) * sizeof(uint32_t) );
493 if( psz_unicode == NULL )
495 msg_Err( p_filter, "out of memory" );
498 #if defined(WORDS_BIGENDIAN)
499 iconv_handle = vlc_iconv_open( "UCS-4BE", "UTF-8" );
501 iconv_handle = vlc_iconv_open( "UCS-4LE", "UTF-8" );
503 if( iconv_handle == (vlc_iconv_t)-1 )
505 msg_Warn( p_filter, "unable to do convertion" );
510 char *p_in_buffer, *p_out_buffer;
511 size_t i_in_bytes, i_out_bytes, i_out_bytes_left, i_ret;
512 i_in_bytes = strlen( psz_string );
513 i_out_bytes = i_in_bytes * sizeof( uint32_t );
514 i_out_bytes_left = i_out_bytes;
515 p_in_buffer = psz_string;
516 p_out_buffer = (char *)psz_unicode;
517 i_ret = vlc_iconv( iconv_handle, &p_in_buffer, &i_in_bytes,
518 &p_out_buffer, &i_out_bytes_left );
520 vlc_iconv_close( iconv_handle );
524 msg_Warn( p_filter, "failed to convert string to unicode (%s), "
525 "bytes left %d", strerror(errno), i_in_bytes );
528 *(uint32_t*)p_out_buffer = 0;
529 i_string_length = (i_out_bytes - i_out_bytes_left) / sizeof(uint32_t);
532 #if defined(HAVE_FRIBIDI)
534 uint32_t *p_fribidi_string;
535 FriBidiCharType base_dir = FRIBIDI_TYPE_ON;
536 p_fribidi_string = malloc( (i_string_length + 1) * sizeof(uint32_t) );
537 fribidi_log2vis( (FriBidiChar*)psz_unicode, i_string_length,
538 &base_dir, (FriBidiChar*)p_fribidi_string, 0, 0, 0 );
539 free( psz_unicode_orig );
540 psz_unicode = psz_unicode_orig = p_fribidi_string;
541 p_fribidi_string[ i_string_length ] = 0;
545 /* Calculate relative glyph positions and a bounding box for the
547 p_line = NewLine( psz_string );
550 msg_Err( p_filter, "out of memory" );
553 p_string->p_lines = p_line;
558 psz_line_start = psz_unicode;
560 #define face p_sys->p_face
561 #define glyph face->glyph
563 while( *psz_unicode )
565 i_char = *psz_unicode++;
566 if( i_char == '\r' ) /* ignore CR chars wherever they may be */
573 psz_line_start = psz_unicode;
574 p_next = NewLine( psz_string );
577 msg_Err( p_filter, "out of memory" );
580 p_line->p_next = p_next;
581 p_line->i_width = line.xMax;
582 p_line->i_height = face->size->metrics.height >> 6;
583 p_line->pp_glyphs[ i ] = NULL;
586 result.x = __MAX( result.x, line.xMax );
587 result.y += face->size->metrics.height >> 6;
594 i_pen_y += face->size->metrics.height >> 6;
596 msg_Dbg( p_filter, "Creating new line, i is %d", i );
602 i_glyph_index = FT_Get_Char_Index( face, i_char );
603 if( p_sys->i_use_kerning && i_glyph_index
607 FT_Get_Kerning( face, i_previous, i_glyph_index,
608 ft_kerning_default, &delta );
609 i_pen_x += delta.x >> 6;
612 p_line->p_glyph_pos[ i ].x = i_pen_x;
613 p_line->p_glyph_pos[ i ].y = i_pen_y;
614 i_error = FT_Load_Glyph( face, i_glyph_index, FT_LOAD_DEFAULT );
617 msg_Err( p_filter, "FT_Load_Glyph returned %d", i_error );
620 i_error = FT_Get_Glyph( glyph, &tmp_glyph );
623 msg_Err( p_filter, "FT_Get_Glyph returned %d", i_error );
626 FT_Glyph_Get_CBox( tmp_glyph, ft_glyph_bbox_pixels, &glyph_size );
627 i_error = FT_Glyph_To_Bitmap( &tmp_glyph, ft_render_mode_normal,
629 if( i_error ) continue;
630 p_line->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
633 line.xMax = p_line->p_glyph_pos[i].x + glyph_size.xMax - glyph_size.xMin + ((FT_BitmapGlyph)tmp_glyph)->left;
634 if( line.xMax > p_filter->fmt_out.video.i_visible_width - 20 )
636 p_line->pp_glyphs[ i ] = NULL;
638 p_line = NewLine( psz_string );
641 p_prev->p_next = p_line;
645 p_string->p_lines = p_line;
647 while( psz_unicode > psz_line_start && *psz_unicode != ' ' )
651 if( psz_unicode == psz_line_start )
653 msg_Warn( p_filter, "unbreakable string" );
661 psz_unicode = psz_line_start;
671 line.yMax = __MAX( line.yMax, glyph_size.yMax );
672 line.yMin = __MIN( line.yMin, glyph_size.yMin );
674 i_previous = i_glyph_index;
675 i_pen_x += glyph->advance.x >> 6;
679 p_line->i_width = line.xMax;
680 p_line->i_height = face->size->metrics.height >> 6;
681 p_line->pp_glyphs[ i ] = NULL;
682 result.x = __MAX( result.x, line.xMax );
683 result.y += line.yMax - line.yMin;
684 p_string->i_height = result.y;
685 p_string->i_width = result.x;
689 /* check to see whether to use the default color/opacity, or another one: */
692 p_sys->i_blue = p_sys->i_font_color & 0x000000FF;
693 p_sys->i_green = (p_sys->i_font_color & 0x0000FF00)/256;
694 p_sys->i_red = (p_sys->i_font_color & 0x00FF0000)/(256*256);
698 p_sys->i_blue = font_color & 0x000000FF;
699 p_sys->i_green = (font_color & 0x0000FF00)/256;
700 p_sys->i_red = (font_color & 0x00FF0000)/(256*256);
702 if( font_opacity < 0 )
704 p_sys->i_opacity = p_sys->i_font_opacity;
708 p_sys->i_opacity = (uint8_t) ( font_opacity & 0x000000FF );
711 Render( p_filter, p_subpic, p_string, p_sys->i_opacity,
712 p_sys->i_red, p_sys->i_green, p_sys->i_blue );
713 FreeString( p_string );
714 block_Release( p_block );
715 if( psz_unicode_orig ) free( psz_unicode_orig );
719 FreeString( p_string );
720 if( p_subpic ) p_filter->pf_sub_buffer_del( p_filter, p_subpic );
721 block_Release( p_block );
722 if( psz_unicode_orig ) free( psz_unicode_orig );
726 static void FreeLine( line_desc_t *p_line )
729 for( i = 0; p_line->pp_glyphs[ i ] != NULL; i++ )
731 FT_Done_Glyph( (FT_Glyph)p_line->pp_glyphs[ i ] );
733 free( p_line->pp_glyphs );
734 free( p_line->p_glyph_pos );
738 static void FreeString( subpicture_data_t *p_string )
740 line_desc_t *p_line, *p_next;
742 if( !p_string ) return;
744 for( p_line = p_string->p_lines; p_line != NULL; p_line = p_next )
746 p_next = p_line->p_next;
750 free( p_string->psz_text );
754 static line_desc_t *NewLine( byte_t *psz_string )
757 line_desc_t *p_line = malloc( sizeof(line_desc_t) );
762 p_line->i_height = 0;
764 p_line->p_next = NULL;
766 /* We don't use CountUtf8Characters() here because we are not acutally
767 * sure the string is utf8. Better be safe than sorry. */
768 i_count = strlen( psz_string );
770 p_line->pp_glyphs = malloc( sizeof(FT_BitmapGlyph)
772 if( p_line->pp_glyphs == NULL )
777 p_line->pp_glyphs[0] = NULL;
779 p_line->p_glyph_pos = malloc( sizeof( FT_Vector )
781 if( p_line->p_glyph_pos == NULL )
783 free( p_line->pp_glyphs );