* freetype.c : Put text on the video, using freetype2
*****************************************************************************
* Copyright (C) 2002, 2003 VideoLAN
- * $Id: freetype.c,v 1.2 2003/07/19 14:41:30 sigmunau Exp $
+ * $Id$
*
* Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
+ * Gildas Bazin <gbazin@videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <stdlib.h> /* malloc(), free() */
#include <string.h>
+#ifdef HAVE_LINUX_LIMITS_H
+# include <linux/limits.h>
+#endif
+
#include <vlc/vlc.h>
#include <vlc/vout.h>
-#include <osd.h>
+#include "osd.h"
+#include "vlc_block.h"
+#include "vlc_filter.h"
+
#include <math.h>
+#ifdef HAVE_ERRNO_H
+# include <errno.h>
+#endif
+
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
-#define FT_RENDER_MODE_NORMAL 0 /* Why do we have to do that ? */
+#ifdef SYS_DARWIN
+#define DEFAULT_FONT "/System/Library/Fonts/LucidaGrande.dfont"
+#elif defined( SYS_BEOS )
+#define DEFAULT_FONT "/boot/beos/etc/fonts/ttfonts/Swiss721.ttf"
+#elif defined( WIN32 )
+#define DEFAULT_FONT "" /* Default font found at run-time */
+#else
+#define DEFAULT_FONT "/usr/share/fonts/truetype/freefont/FreeSerifBold.ttf"
+#endif
+
+#if defined(HAVE_FRIBIDI)
+#include <fribidi/fribidi.h>
+#endif
+
+typedef struct line_desc_t line_desc_t;
/*****************************************************************************
* Local prototypes
*****************************************************************************/
-static int Create ( vlc_object_t * );
-static void Destroy ( vlc_object_t * );
+static int Create ( vlc_object_t * );
+static void Destroy( vlc_object_t * );
-static void Render ( vout_thread_t *, picture_t *,
- const subpicture_t * );
-static int AddText ( vout_thread_t *, byte_t *, text_style_t *, int,
- int, int, mtime_t, mtime_t );
-static int GetUnicodeCharFromUTF8( byte_t ** );
+static subpicture_t *RenderText( filter_t *, block_t * );
+static line_desc_t *NewLine( byte_t * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define FONT_TEXT N_("Font")
-#define FONT_LONGTEXT N_("Filename of Font")
-#define FONTSIZE_TEXT N_("Font size")
-#define FONTSIZE_LONGTEXT N_("The size of the fonts used by the osd module" )
+#define FONT_LONGTEXT N_("Font filename")
+#define FONTSIZE_TEXT N_("Font size in pixels")
+#define FONTSIZE_LONGTEXT N_("The size of the fonts used by the osd module. " \
+ "If set to something different than 0 this option will override the " \
+ "relative font size " )
+#define FONTSIZER_TEXT N_("Font size")
+#define FONTSIZER_LONGTEXT N_("The size of the fonts used by the osd module" )
+
+static int pi_sizes[] = { 20, 18, 16, 12, 6 };
+static char *ppsz_sizes_text[] = { N_("Smaller"), N_("Small"), N_("Normal"),
+ N_("Large"), N_("Larger") };
vlc_module_begin();
- add_category_hint( N_("Fonts"), NULL, VLC_FALSE );
- add_file( "freetype-font", "", NULL, FONT_TEXT, FONT_LONGTEXT, VLC_FALSE );
- add_integer( "freetype-fontsize", 16, NULL, FONTSIZE_TEXT, FONTSIZE_LONGTEXT, VLC_FALSE );
set_description( _("freetype2 font renderer") );
+
+ add_file( "freetype-font", DEFAULT_FONT, NULL, FONT_TEXT, FONT_LONGTEXT,
+ VLC_FALSE );
+ add_integer( "freetype-fontsize", 0, NULL, FONTSIZE_TEXT,
+ FONTSIZE_LONGTEXT, VLC_TRUE );
+ add_integer( "freetype-rel-fontsize", 16, NULL, FONTSIZER_TEXT,
+ FONTSIZER_LONGTEXT, VLC_FALSE );
+ change_integer_list( pi_sizes, ppsz_sizes_text, 0 );
+
set_capability( "text renderer", 100 );
add_shortcut( "text" );
set_callbacks( Create, Destroy );
vlc_module_end();
/**
- Describes a string to be displayed on the video, or a linked list of
- such
-*/
-struct subpicture_sys_t
+ * Private data in a subpicture. Describes a string.
+ */
+typedef struct subpicture_data_t
{
- int i_x_margin;
- int i_y_margin;
int i_width;
int i_height;
- int i_flags;
/** The string associated with this subpicture */
byte_t *psz_text;
+ line_desc_t *p_lines;
+
+} subpicture_data_t;
+
+struct line_desc_t
+{
/** NULL-terminated list of glyphs making the string */
- FT_Glyph *pp_glyphs;
+ FT_BitmapGlyph *pp_glyphs;
/** list of relative positions for the glyphs */
- FT_Vector *p_glyph_pos;
+ FT_Vector *p_glyph_pos;
+ int i_height;
+ int i_width;
+ line_desc_t *p_next;
};
+static void Render ( filter_t *, subpicture_t *, subpicture_data_t * );
+static void FreeString( subpicture_data_t * );
+
/*****************************************************************************
- * vout_sys_t: osd_text local data
+ * filter_sys_t: freetype local data
*****************************************************************************
* This structure is part of the video output thread descriptor.
- * It describes the osd-text specific properties of an output thread.
+ * It describes the freetype specific properties of an output thread.
*****************************************************************************/
-struct text_renderer_sys_t
+struct filter_sys_t
{
FT_Library p_library; /* handle to library */
FT_Face p_face; /* handle to face object */
- vlc_mutex_t *lock;
vlc_bool_t i_use_kerning;
uint8_t pi_gamma[256];
};
-/* more prototypes */
-//static void ComputeBoundingBox( subpicture_sys_t * );
-static void FreeString( subpicture_t * );
/*****************************************************************************
* Create: allocates osd-text video thread output method
*****************************************************************************
* This function allocates and initializes a Clone vout method.
*****************************************************************************/
-#define gamma_value 2.0
static int Create( vlc_object_t *p_this )
{
- vout_thread_t *p_vout = (vout_thread_t *)p_this;
- char *psz_fontfile;
+ filter_t *p_filter = (filter_t *)p_this;
+ filter_sys_t *p_sys;
+ char *psz_fontfile = NULL;
int i, i_error;
- double gamma_inv = 1.0f / gamma_value;
-
+ int i_fontsize = 0;
+ vlc_value_t val;
+
/* Allocate structure */
- p_vout->p_text_renderer_data = malloc( sizeof( text_renderer_sys_t ) );
- if( p_vout->p_text_renderer_data == NULL )
+ p_sys = malloc( sizeof( filter_sys_t ) );
+ if( !p_sys )
{
- msg_Err( p_vout, "out of memory" );
+ msg_Err( p_filter, "out of memory" );
return VLC_ENOMEM;
}
+ p_sys->p_face = 0;
+ p_sys->p_library = 0;
- for (i = 0; i < 256; i++) {
- p_vout->p_text_renderer_data->pi_gamma[i] =
- (uint8_t)( pow( (double)i / 255.0f, gamma_inv) * 255.0f );
- //msg_Dbg( p_vout, "%d", p_vout->p_text_renderer_data->pi_gamma[i]);
+ for( i = 0; i < 256; i++ )
+ {
+ p_sys->pi_gamma[i] = (uint8_t)( pow( (double)i * 255.0f, 0.5f ) );
}
+ var_Create( p_filter, "freetype-font", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
+ var_Create( p_filter, "freetype-fontsize",
+ VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ var_Create( p_filter, "freetype-rel-fontsize",
+ VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+
/* Look what method was requested */
- psz_fontfile = config_GetPsz( p_vout, "freetype-font" );
- i_error = FT_Init_FreeType( &p_vout->p_text_renderer_data->p_library );
+ var_Get( p_filter, "freetype-font", &val );
+ psz_fontfile = val.psz_string;
+ if( !psz_fontfile || !*psz_fontfile )
+ {
+ if( psz_fontfile ) free( psz_fontfile );
+ psz_fontfile = (char *)malloc( PATH_MAX + 1 );
+#ifdef WIN32
+ GetWindowsDirectory( psz_fontfile, PATH_MAX + 1 );
+ strcat( psz_fontfile, "\\fonts\\arial.ttf" );
+#elif SYS_DARWIN
+ strcpy( psz_fontfile, DEFAULT_FONT );
+#else
+ msg_Err( p_filter, "user didn't specify a font" );
+ goto error;
+#endif
+ }
+
+ i_error = FT_Init_FreeType( &p_sys->p_library );
if( i_error )
{
- msg_Err( p_vout, "couldn't initialize freetype" );
- free( p_vout->p_text_renderer_data );
- return VLC_EGENERIC;
+ msg_Err( p_filter, "couldn't initialize freetype" );
+ goto error;
}
- i_error = FT_New_Face( p_vout->p_text_renderer_data->p_library,
- psz_fontfile, 0,
- &p_vout->p_text_renderer_data->p_face );
+
+ i_error = FT_New_Face( p_sys->p_library, psz_fontfile ? psz_fontfile : "",
+ 0, &p_sys->p_face );
if( i_error == FT_Err_Unknown_File_Format )
{
- msg_Err( p_vout, "file %s have unknown format", psz_fontfile );
- FT_Done_FreeType( p_vout->p_text_renderer_data->p_library );
- free( p_vout->p_text_renderer_data );
- return VLC_EGENERIC;
+ msg_Err( p_filter, "file %s have unknown format", psz_fontfile );
+ goto error;
}
else if( i_error )
{
- msg_Err( p_vout, "failed to load font file" );
- FT_Done_FreeType( p_vout->p_text_renderer_data->p_library );
- free( p_vout->p_text_renderer_data );
- return VLC_EGENERIC;
+ msg_Err( p_filter, "failed to load font file %s", psz_fontfile );
+ goto error;
+ }
+
+ i_error = FT_Select_Charmap( p_sys->p_face, ft_encoding_unicode );
+ if( i_error )
+ {
+ msg_Err( p_filter, "Font has no unicode translation table" );
+ goto error;
}
- i_error = FT_Select_Charmap( p_vout->p_text_renderer_data->p_face,
- FT_ENCODING_UNICODE );
- if ( i_error )
+
+ p_sys->i_use_kerning = FT_HAS_KERNING( p_sys->p_face );
+
+ var_Get( p_filter, "freetype-fontsize", &val );
+ if( val.i_int )
{
- msg_Err( p_vout, "Font has no unicode translation table" );
- FT_Done_Face( p_vout->p_text_renderer_data->p_face );
- FT_Done_FreeType( p_vout->p_text_renderer_data->p_library );
- free( p_vout->p_text_renderer_data );
- return VLC_EGENERIC;
+ i_fontsize = val.i_int;
}
-
- p_vout->p_text_renderer_data->i_use_kerning = FT_HAS_KERNING(p_vout->p_text_renderer_data->p_face);
-
- i_error = FT_Set_Pixel_Sizes( p_vout->p_text_renderer_data->p_face, 0,
- config_GetInt( p_vout, "freetype-fontsize" ) );
+ else
+ {
+ var_Get( p_filter, "freetype-rel-fontsize", &val );
+ i_fontsize = (int)p_filter->fmt_out.video.i_height / val.i_int;
+ }
+ if( i_fontsize <= 0 )
+ {
+ msg_Warn( p_filter, "Invalid fontsize, using 12" );
+ i_fontsize = 12;
+ }
+ msg_Dbg( p_filter, "Using fontsize: %i", i_fontsize);
+
+ i_error = FT_Set_Pixel_Sizes( p_sys->p_face, 0, i_fontsize );
if( i_error )
{
- msg_Err( p_vout, "couldn't set font size to %d",
- config_GetInt( p_vout, "osd-fontsize" ) );
- free( p_vout->p_text_renderer_data );
- return VLC_EGENERIC;
+ msg_Err( p_filter, "couldn't set font size to %d", i_fontsize );
+ goto error;
}
- p_vout->pf_add_string = AddText;
+
+ if( psz_fontfile ) free( psz_fontfile );
+ p_filter->pf_render_string = RenderText;
+ p_filter->p_sys = p_sys;
return VLC_SUCCESS;
+
+ error:
+ if( p_sys->p_face ) FT_Done_Face( p_sys->p_face );
+ if( p_sys->p_library ) FT_Done_FreeType( p_sys->p_library );
+ if( psz_fontfile ) free( psz_fontfile );
+ free( p_sys );
+ return VLC_EGENERIC;
}
/*****************************************************************************
* Clean up all data and library connections
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
-{
- vout_thread_t *p_vout = (vout_thread_t *)p_this;
- FT_Done_Face( p_vout->p_text_renderer_data->p_face );
- FT_Done_FreeType( p_vout->p_text_renderer_data->p_library );
- free( p_vout->p_text_renderer_data );
+{
+ filter_t *p_filter = (filter_t *)p_this;
+ filter_sys_t *p_sys = p_filter->p_sys;
+ FT_Done_Face( p_sys->p_face );
+ FT_Done_FreeType( p_sys->p_library );
+ free( p_sys );
}
/*****************************************************************************
*****************************************************************************
* This function merges the previously rendered freetype glyphs into a picture
*****************************************************************************/
-static void Render( vout_thread_t *p_vout, picture_t *p_pic,
- const subpicture_t *p_subpic )
+static void Render( filter_t *p_filter, subpicture_t *p_spu,
+ subpicture_data_t *p_string )
{
- subpicture_sys_t *p_string = p_subpic->p_sys;
- int i_plane, i_error,x,y,pen_x, pen_y;
- unsigned int i;
-
- for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
+ filter_sys_t *p_sys = p_filter->p_sys;
+ line_desc_t *p_line;
+ uint8_t *p_y, *p_u, *p_v, *p_a;
+ video_format_t fmt;
+ int i, x, y, i_pitch;
+
+ /* Create a new subpicture region */
+ memset( &fmt, 0, sizeof(video_format_t) );
+ fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
+ fmt.i_aspect = VOUT_ASPECT_FACTOR;
+ fmt.i_width = fmt.i_visible_width = p_string->i_width + 2;
+ fmt.i_height = fmt.i_visible_height = p_string->i_height + 2;
+ fmt.i_x_offset = fmt.i_y_offset = 0;
+ p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
+ if( !p_spu->p_region )
{
- uint8_t *p_in;
- int i_pitch = p_pic->p[i_plane].i_pitch;
-
- p_in = p_pic->p[i_plane].p_pixels;
-
- if ( i_plane == 0 )
- {
- if ( p_string->i_flags & OSD_ALIGN_BOTTOM )
- {
- pen_y = p_pic->p[i_plane].i_lines - p_string->i_height -
- p_string->i_y_margin;
- }
- else
- {
- pen_y = p_string->i_y_margin;
- }
- if ( p_string->i_flags & OSD_ALIGN_RIGHT )
- {
- pen_x = i_pitch - p_string->i_width
- - p_string->i_x_margin;
- }
- else
- {
- pen_x = p_string->i_x_margin;
- }
-
- for( i = 0; p_string->pp_glyphs[i] != NULL; i++ )
- {
- if( p_string->pp_glyphs[i] )
- {
- FT_Glyph p_glyph = p_string->pp_glyphs[i];
- FT_BitmapGlyph p_image;
- i_error = FT_Glyph_To_Bitmap( &p_glyph,
- FT_RENDER_MODE_NORMAL,
- &p_string->p_glyph_pos[i],
- 0 );
- if ( i_error ) continue;
- p_image = (FT_BitmapGlyph)p_glyph;
-#define alpha p_vout->p_text_renderer_data->pi_gamma[p_image->bitmap.buffer[x+ y*p_image->bitmap.width]]
-#define pixel p_in[(p_string->p_glyph_pos[i].y + pen_y + y - p_image->top)*i_pitch+x+pen_x+p_string->p_glyph_pos[i].x+p_image->left]
- for(y = 0; y < p_image->bitmap.rows; y++ )
- {
- for( x = 0; x < p_image->bitmap.width; x++ )
- {
- // pixel = alpha;
- // pixel = (pixel^alpha)^pixel;
- pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 ) +
- ( 255 * alpha >> 8 );
- }
- }
- FT_Done_Glyph( p_glyph );
- }
- }
- }
+ msg_Err( p_filter, "cannot allocate SPU region" );
+ return;
+ }
+
+ p_spu->p_region->i_x = p_spu->p_region->i_y = 0;
+ p_y = p_spu->p_region->picture.Y_PIXELS;
+ p_u = p_spu->p_region->picture.U_PIXELS;
+ p_v = p_spu->p_region->picture.V_PIXELS;
+ p_a = p_spu->p_region->picture.A_PIXELS;
+ i_pitch = p_spu->p_region->picture.Y_PITCH;
+
+ /* Initialize the region pixels (only the alpha will be changed later) */
+ memset( p_y, 0x00, i_pitch * p_spu->p_region->fmt.i_height );
+ memset( p_u, 0x80, i_pitch * p_spu->p_region->fmt.i_height );
+ memset( p_v, 0x80, i_pitch * p_spu->p_region->fmt.i_height );
+ memset( p_a, 0x00, i_pitch * p_spu->p_region->fmt.i_height );
+
+#define pi_gamma p_sys->pi_gamma
+
+ for( p_line = p_string->p_lines; p_line != NULL; p_line = p_line->p_next )
+ {
+ int i_glyph_tmax = 0;
+ int i_bitmap_offset, i_offset;
+ for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
+ {
+ FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
+ i_glyph_tmax = __MAX( i_glyph_tmax, p_glyph->top );
+ }
+
+ for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
+ {
+ FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
+
+ i_offset = ( p_line->p_glyph_pos[ i ].y +
+ i_glyph_tmax - p_glyph->top + 1 ) *
+ i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1;
+
+ for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
+ {
+ for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
+ {
+ if( !pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]] )
+ continue;
+
+ i_offset -= i_pitch;
+ p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])/2;
+ i_offset += i_pitch; x--;
+ p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])/2;
+ x += 2;
+ p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])/2;
+ i_offset += i_pitch; x--;
+ p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])/2;
+ i_offset -= i_pitch;
+ }
+ i_offset += i_pitch;
+ }
+
+ i_offset = ( p_line->p_glyph_pos[ i ].y +
+ i_glyph_tmax - p_glyph->top ) *
+ i_pitch + p_line->p_glyph_pos[ i ].x + p_glyph->left + 1;
+
+ for( y = 0, i_bitmap_offset = 0; y < p_glyph->bitmap.rows; y++ )
+ {
+ for( x = 0; x < p_glyph->bitmap.width; x++, i_bitmap_offset++ )
+ {
+ p_y[i_offset + x] =
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]];
+ }
+ i_offset += i_pitch;
+ }
+
+#undef pi_gamma
+ }
}
}
* needed glyphs into memory. It is used as pf_add_string callback in
* the vout method by this module
*/
-static int AddText ( vout_thread_t *p_vout, byte_t *psz_string,
- text_style_t *p_style, int i_flags, int i_hmargin,
- int i_vmargin, mtime_t i_start, mtime_t i_stop )
+static subpicture_t *RenderText( filter_t *p_filter, block_t *p_block )
{
- subpicture_sys_t *p_string;
- int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous, i_char;
- subpicture_t *p_subpic;
+ filter_sys_t *p_sys = p_filter->p_sys;
+ subpicture_t *p_subpic = 0;
+ subpicture_data_t *p_string = 0;
+ line_desc_t *p_line = 0, *p_next = 0;
+ int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous;
+ uint32_t *p_unicode_string, i_char;
+ int i_string_length;
+ char *psz_string;
+ vlc_iconv_t iconv_handle = (vlc_iconv_t)(-1);
+
FT_BBox line;
FT_BBox glyph_size;
FT_Vector result;
+ FT_Glyph tmp_glyph;
+
+ /* Sanity check */
+ if( !p_block ) return NULL;
+ psz_string = p_block->p_buffer;
+ if( !psz_string || !*psz_string ) goto error;
result.x = 0;
result.y = 0;
line.yMax = 0;
/* Create and initialize a subpicture */
- p_subpic = vout_CreateSubPicture( p_vout, MEMORY_SUBPICTURE );
- if ( p_subpic == NULL )
+ p_subpic = p_filter->pf_sub_buffer_new( p_filter );
+ if( !p_subpic ) goto error;
+
+ p_subpic->i_start = p_block->i_pts;
+ p_subpic->i_stop = p_block->i_pts + p_block->i_length;
+ p_subpic->b_ephemer = (p_block->i_length == 0);
+ p_subpic->b_absolute = VLC_FALSE;
+
+ /* Create and initialize private data for the subpicture */
+ p_string = malloc( sizeof(subpicture_data_t) );
+ if( !p_string )
{
- return VLC_EGENERIC;
+ msg_Err( p_filter, "Out of memory" );
+ goto error;
}
- p_subpic->pf_render = Render;
- p_subpic->pf_destroy = FreeString;
- p_subpic->i_start = i_start;
- p_subpic->i_stop = i_stop;
- if( i_stop == 0 )
+ p_string->p_lines = 0;
+ p_string->psz_text = strdup( psz_string );
+
+ p_unicode_string = malloc( ( strlen(psz_string) + 1 ) * sizeof(uint32_t) );
+ if( p_unicode_string == NULL )
{
- p_subpic->b_ephemer = VLC_TRUE;
+ msg_Err( p_filter, "Out of memory" );
+ goto error;
}
- else
+#if defined(WORDS_BIGENDIAN)
+ iconv_handle = vlc_iconv_open( "UCS-4BE", "UTF-8" );
+#else
+ iconv_handle = vlc_iconv_open( "UCS-4LE", "UTF-8" );
+#endif
+ if( iconv_handle == (vlc_iconv_t)-1 )
{
- p_subpic->b_ephemer = VLC_FALSE;
+ msg_Warn( p_filter, "Unable to do convertion" );
+ goto error;
}
- /* Create and initialize private data for the subpicture */
- p_string = malloc( sizeof(subpicture_sys_t) );
- if ( p_string == NULL )
{
- vout_DestroySubPicture( p_vout, p_subpic );
- return VLC_ENOMEM;
- }
- p_subpic->p_sys = p_string;
- p_string->i_flags = i_flags;
- p_string->i_x_margin = i_hmargin;
- p_string->i_y_margin = i_vmargin;
+ char *p_in_buffer, *p_out_buffer;
+ size_t i_in_bytes, i_out_bytes, i_out_bytes_left, i_ret;
+ i_in_bytes = strlen( psz_string );
+ i_out_bytes = i_in_bytes * sizeof( uint32_t );
+ i_out_bytes_left = i_out_bytes;
+ p_in_buffer = psz_string;
+ p_out_buffer = (char *)p_unicode_string;
+ i_ret = vlc_iconv( iconv_handle, &p_in_buffer, &i_in_bytes,
+ &p_out_buffer, &i_out_bytes_left );
- p_string->psz_text = strdup( psz_string );
- p_string->pp_glyphs = malloc( sizeof(FT_GlyphSlot)
- * ( strlen( p_string->psz_text ) + 1 ) );
- if( p_string->pp_glyphs == NULL )
- {
- msg_Err( p_vout, "Out of memory" );
- return VLC_ENOMEM;
+ vlc_iconv_close( iconv_handle );
+
+ if( i_in_bytes )
+ {
+ msg_Warn( p_filter, "Failed to convert string to unicode (%s), "
+ "bytes left %d", strerror(errno), i_in_bytes );
+ goto error;
+ }
+ *(uint32_t*)p_out_buffer = 0;
+ i_string_length = (i_out_bytes - i_out_bytes_left) / sizeof(uint32_t);
}
- p_string->p_glyph_pos = malloc( sizeof( FT_Vector )
- * strlen( p_string->psz_text ) );
- if( p_string->p_glyph_pos == NULL )
+
+#if defined(HAVE_FRIBIDI)
{
- msg_Err( p_vout, "Out of memory" );
- return VLC_ENOMEM;
+ uint32_t *p_fribidi_string;
+ FriBidiCharType base_dir = FRIBIDI_TYPE_ON;
+ p_fribidi_string = malloc( (i_string_length + 1) * sizeof(uint32_t) );
+ fribidi_log2vis( (FriBidiChar*)p_unicode_string, i_string_length,
+ &base_dir, (FriBidiChar*)p_fribidi_string, 0, 0, 0 );
+ free( p_unicode_string );
+ p_unicode_string = p_fribidi_string;
+ p_fribidi_string[ i_string_length ] = 0;
}
+#endif
/* Calculate relative glyph positions and a bounding box for the
* entire string */
+ p_line = NewLine( psz_string );
+ if( p_line == NULL )
+ {
+ msg_Err( p_filter, "Out of memory" );
+ goto error;
+ }
+ p_string->p_lines = p_line;
i_pen_x = 0;
i_pen_y = 0;
i_previous = 0;
i = 0;
- while( *psz_string )
- {
- i_char = GetUnicodeCharFromUTF8( &psz_string );
-#define face p_vout->p_text_renderer_data->p_face
+
+#define face p_sys->p_face
#define glyph face->glyph
- if ( i_char == '\n' )
+
+ while( *p_unicode_string )
+ {
+ i_char = *p_unicode_string++;
+ if( i_char == '\r' ) /* ignore CR chars wherever they may be */
{
- i_pen_x = 0;
+ continue;
+ }
+
+ if( i_char == '\n' )
+ {
+ p_next = NewLine( psz_string );
+ if( p_next == NULL )
+ {
+ msg_Err( p_filter, "Out of memory" );
+ goto error;
+ }
+ p_line->p_next = p_next;
+ p_line->i_width = line.xMax;
+ p_line->i_height = face->size->metrics.height >> 6;
+ p_line->pp_glyphs[ i ] = NULL;
+ p_line = p_next;
result.x = __MAX( result.x, line.xMax );
- result.y += face->height >> 6;
+ result.y += face->size->metrics.height >> 6;
+ i_pen_x = 0;
line.xMin = 0;
line.xMax = 0;
line.yMin = 0;
line.yMax = 0;
- i_pen_y += face->height >> 6;
+ i_pen_y += face->size->metrics.height >> 6;
+#if 0
+ msg_Dbg( p_filter, "Creating new line, i is %d", i );
+#endif
+ i = 0;
continue;
}
+
i_glyph_index = FT_Get_Char_Index( face, i_char );
- if ( p_vout->p_text_renderer_data->i_use_kerning && i_glyph_index
+ if( p_sys->i_use_kerning && i_glyph_index
&& i_previous )
{
FT_Vector delta;
FT_Get_Kerning( face, i_previous, i_glyph_index,
ft_kerning_default, &delta );
i_pen_x += delta.x >> 6;
-
+
}
- p_string->p_glyph_pos[ i ].x = i_pen_x;
- p_string->p_glyph_pos[ i ].y = i_pen_y;
+ p_line->p_glyph_pos[ i ].x = i_pen_x;
+ p_line->p_glyph_pos[ i ].y = i_pen_y;
i_error = FT_Load_Glyph( face, i_glyph_index, FT_LOAD_DEFAULT );
- if ( i_error )
+ if( i_error )
{
- msg_Err( p_vout, "FT_Load_Glyph returned %d", i_error );
- return VLC_EGENERIC;
+ msg_Err( p_filter, "FT_Load_Glyph returned %d", i_error );
+ goto error;
}
- i_error = FT_Get_Glyph( glyph, &p_string->pp_glyphs[ i ] );
- if ( i_error )
+ i_error = FT_Get_Glyph( glyph, &tmp_glyph );
+ if( i_error )
{
- msg_Err( p_vout, "FT_Get_Glyph returned %d", i_error );
- return VLC_EGENERIC;
+ msg_Err( p_filter, "FT_Get_Glyph returned %d", i_error );
+ goto error;
}
- FT_Glyph_Get_CBox( p_string->pp_glyphs[i],
- ft_glyph_bbox_pixels, &glyph_size );
+ FT_Glyph_Get_CBox( tmp_glyph, ft_glyph_bbox_pixels, &glyph_size );
+ i_error = FT_Glyph_To_Bitmap( &tmp_glyph, ft_render_mode_normal,
+ NULL, 1 );
+ if( i_error ) continue;
+ p_line->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
+
/* Do rest */
- line.xMax = p_string->p_glyph_pos[i].x + glyph_size.xMax - glyph_size.xMin;
+ line.xMax = p_line->p_glyph_pos[i].x + glyph_size.xMax - glyph_size.xMin;
line.yMax = __MAX( line.yMax, glyph_size.yMax );
line.yMin = __MIN( line.yMin, glyph_size.yMin );
-
+
i_previous = i_glyph_index;
i_pen_x += glyph->advance.x >> 6;
- i++;
+ i++;
}
- p_string->pp_glyphs[i] = NULL;
+
+ p_line->i_width = line.xMax;
+ p_line->i_height = face->size->metrics.height >> 6;
+ p_line->pp_glyphs[ i ] = NULL;
result.x = __MAX( result.x, line.xMax );
result.y += line.yMax - line.yMin;
p_string->i_height = result.y;
p_string->i_width = result.x;
- msg_Dbg( p_vout, "string height is %d, width is %d", p_string->i_height, p_string->i_width );
- msg_Dbg( p_vout, "adding string \"%s\" at (%d,%d) start_date "I64Fd
- " end_date" I64Fd, p_string->psz_text, p_string->i_x_margin,
- p_string->i_y_margin, i_start, i_stop );
- vout_DisplaySubPicture( p_vout, p_subpic );
- return VLC_SUCCESS;
+
+#undef face
+#undef glyph
+
+ Render( p_filter, p_subpic, p_string );
+ FreeString( p_string );
+ block_Release( p_block );
+ return p_subpic;
+
+ error:
+ FreeString( p_string );
+ if( p_subpic ) p_filter->pf_sub_buffer_del( p_filter, p_subpic );
+ block_Release( p_block );
+ return NULL;
}
-static void FreeString( subpicture_t *p_subpic )
+static void FreeString( subpicture_data_t *p_string )
{
unsigned int i;
- subpicture_sys_t *p_string = p_subpic->p_sys;
- for ( i = 0; p_string->pp_glyphs[ i ] != NULL; i++ )
+ line_desc_t *p_line, *p_next;
+
+ if( !p_string ) return;
+
+ for( p_line = p_string->p_lines; p_line != NULL; p_line = p_next )
{
- FT_Done_Glyph( p_string->pp_glyphs[ i ] );
+ p_next = p_line->p_next;
+ for( i = 0; p_line->pp_glyphs[ i ] != NULL; i++ )
+ {
+ FT_Done_Glyph( (FT_Glyph)p_line->pp_glyphs[ i ] );
+ }
+ free( p_line->pp_glyphs );
+ free( p_line->p_glyph_pos );
+ free( p_line );
}
+
free( p_string->psz_text );
- free( p_string->p_glyph_pos );
- free( p_string->pp_glyphs );
free( p_string );
}
-/* convert one or more utf8 bytes into a unicode character */
-static int GetUnicodeCharFromUTF8( byte_t **ppsz_utf8_string )
+static line_desc_t *NewLine( byte_t *psz_string )
{
- int i_remaining_bytes, i_char = 0;
- if( ( **ppsz_utf8_string & 0xFC ) == 0xFC )
- {
- i_char = **ppsz_utf8_string & 1;
- i_remaining_bytes = 5;
- }
- else if( ( **ppsz_utf8_string & 0xF8 ) == 0xF8 )
- {
- i_char = **ppsz_utf8_string & 3;
- i_remaining_bytes = 4;
- }
- else if( ( **ppsz_utf8_string & 0xF0 ) == 0xF0 )
- {
- i_char = **ppsz_utf8_string & 7;
- i_remaining_bytes = 3;
- }
- else if( ( **ppsz_utf8_string & 0xE0 ) == 0xE0 )
+ int i_count;
+ line_desc_t *p_line = malloc( sizeof(line_desc_t) );
+ if( !p_line )
{
- i_char = **ppsz_utf8_string & 15;
- i_remaining_bytes = 2;
+ return NULL;
}
- else if( ( **ppsz_utf8_string & 0xC0 ) == 0xC0 )
- {
- i_char = **ppsz_utf8_string & 31;
- i_remaining_bytes = 1;
- }
- else
+ p_line->i_height = 0;
+ p_line->i_width = 0;
+ p_line->p_next = NULL;
+
+ /* We don't use CountUtf8Characters() here because we are not acutally
+ * sure the string is utf8. Better be safe than sorry. */
+ i_count = strlen( psz_string );
+
+ p_line->pp_glyphs = malloc( sizeof(FT_BitmapGlyph)
+ * ( i_count + 1 ) );
+ if( p_line->pp_glyphs == NULL )
{
- i_char = **ppsz_utf8_string;
- i_remaining_bytes = 0;
+ free( p_line );
+ return NULL;
}
- while( i_remaining_bytes )
+ p_line->p_glyph_pos = malloc( sizeof( FT_Vector )
+ * i_count + 1 );
+ if( p_line->p_glyph_pos == NULL )
{
- (*ppsz_utf8_string)++;
- i_remaining_bytes--;
- i_char = ( i_char << 6 ) + ( **ppsz_utf8_string & 0x3F );
+ free( p_line->pp_glyphs );
+ free( p_line );
+ return NULL;
}
- (*ppsz_utf8_string)++;
- return i_char;
+
+ return p_line;
}
projects / vlc / blobdiff