* freetype.c : Put text on the video, using freetype2
*****************************************************************************
* Copyright (C) 2002, 2003 VideoLAN
- * $Id: freetype.c,v 1.14 2003/07/26 18:54:20 titer Exp $
+ * $Id$
*
* Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
*
#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 <math.h>
+#ifdef HAVE_ERRNO_H
+# include <errno.h>
+#endif
+
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#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 ""
+#define DEFAULT_FONT "/usr/share/fonts/truetype/freefont/FreeSerifBold.ttf"
#endif
+#if defined(HAVE_ICONV)
+#include <iconv.h>
+#endif
+#if defined(HAVE_FRIBIDI)
+#include <fribidi/fribidi.h>
+#endif
+
+typedef struct line_desc_t line_desc_t;
+
/*****************************************************************************
* Local prototypes
*****************************************************************************/
const subpicture_t * );
static void RenderYUY2( 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 void RenderRV32( vout_thread_t *, picture_t *,
+ const subpicture_t * );
+static subpicture_t *AddText ( vout_thread_t *, int, char *, text_style_t *,
+ int, int, int, mtime_t, mtime_t );
+
static void FreeString( subpicture_t * );
+#if !defined(HAVE_ICONV)
+static int GetUnicodeCharFromUTF8( byte_t ** );
+#endif
+
+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", DEFAULT_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();
/**
- * Private data in a aubpicture. Describes a string.
+ * Private data in a subpicture. Describes a string.
*/
struct subpicture_sys_t
{
int i_flags;
/** The string associated with this subpicture */
byte_t *psz_text;
+ line_desc_t *p_lines;
+};
+
+struct line_desc_t
+{
/** NULL-terminated list of glyphs making the string */
- FT_BitmapGlyph *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;
};
/*****************************************************************************
- * text_remderer_sys_t: freetype local data
+ * text_renderer_sys_t: freetype local data
*****************************************************************************
* This structure is part of the video output thread descriptor.
* It describes the freetype specific properties of an output thread.
vout_thread_t *p_vout = (vout_thread_t *)p_this;
char *psz_fontfile;
int i, i_error;
+ int i_fontsize = 0;
double gamma_inv = 1.0f / gamma_value;
vlc_value_t val;
var_Create( p_vout, "freetype-font", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
var_Create( p_vout, "freetype-fontsize",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ var_Create( p_vout, "freetype-rel-fontsize",
+ VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
/* Look what method was requested */
var_Get( p_vout, "freetype-font", &val );
i_error = FT_Select_Charmap( p_vout->p_text_renderer_data->p_face,
ft_encoding_unicode );
- if ( i_error )
+ if( i_error )
{
msg_Err( p_vout, "Font has no unicode translation table" );
FT_Done_Face( p_vout->p_text_renderer_data->p_face );
p_vout->p_text_renderer_data->i_use_kerning =
FT_HAS_KERNING(p_vout->p_text_renderer_data->p_face);
+
var_Get( p_vout, "freetype-fontsize", &val );
- i_error = FT_Set_Pixel_Sizes( p_vout->p_text_renderer_data->p_face, 0, val.i_int );
+ if( val.i_int )
+ {
+ i_fontsize = val.i_int;
+ }
+ else
+ {
+ var_Get( p_vout, "freetype-rel-fontsize", &val );
+ i_fontsize = (int) p_vout->render.i_height / val.i_int;
+ }
+ msg_Dbg( p_vout, "Using fontsize: %i", i_fontsize);
+
+ i_error = FT_Set_Pixel_Sizes( p_vout->p_text_renderer_data->p_face, 0,
+ i_fontsize );
if( i_error )
{
- msg_Err( p_vout, "couldn't set font size to %d", val.i_int );
+ msg_Err( p_vout, "couldn't set font size to %d", i_fontsize );
free( p_vout->p_text_renderer_data );
return VLC_EGENERIC;
}
case VLC_FOURCC('R','V','1','6'):
RenderRV16( p_vout, p_pic, p_subpic );
break;
-
+#endif
/* RV32 target, scaling */
case VLC_FOURCC('R','V','2','4'):
case VLC_FOURCC('R','V','3','2'):
RenderRV32( p_vout, p_pic, p_subpic );
break;
-#endif
/* NVidia or BeOS overlay, no scaling */
case VLC_FOURCC('Y','U','Y','2'):
RenderYUY2( p_vout, p_pic, p_subpic );
* Draw a string on a i420 (or similar) picture
*/
static void RenderI420( vout_thread_t *p_vout, picture_t *p_pic,
- const subpicture_t *p_subpic )
+ const subpicture_t *p_subpic )
{
subpicture_sys_t *p_string = p_subpic->p_sys;
int i_plane, x, y, pen_x, pen_y;
unsigned int i;
+ line_desc_t *p_line;
- for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
+ for( p_line = p_subpic->p_sys->p_lines; p_line != NULL;
+ p_line = p_line->p_next )
{
- 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 )
+ for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
{
- 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;
- }
- pen_y += p_vout->p_text_renderer_data->p_face->size->metrics.height / 100;
- 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;
- }
+ uint8_t *p_in = p_pic->p[ i_plane ].p_pixels;
+ int i_pic_pitch = p_pic->p[ i_plane ].i_pitch;
+ int i_pic_width = p_pic->p[ i_plane ].i_visible_pitch;
- for( i = 0; p_string->pp_glyphs[i] != NULL; i++ )
+ if( i_plane == 0 )
{
- if( p_string->pp_glyphs[i] )
+ if( p_string->i_flags & OSD_ALIGN_BOTTOM )
{
- FT_BitmapGlyph p_glyph = p_string->pp_glyphs[ i ];
-#define alpha p_vout->p_text_renderer_data->pi_gamma[ p_glyph->bitmap.buffer[ x + y * p_glyph->bitmap.width ] ]
-#define pixel p_in[ ( p_string->p_glyph_pos[ i ].y + pen_y + y - p_glyph->top ) * i_pitch+x + pen_x + p_string->p_glyph_pos[ i ].x + p_glyph->left ]
- for(y = 0; y < p_glyph->bitmap.rows; y++ )
+ 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;
+ }
+ pen_y += p_vout->p_text_renderer_data->p_face->size->metrics.ascender >> 6;
+
+ if( p_string->i_flags & OSD_ALIGN_RIGHT )
+ {
+ pen_x = i_pic_width - p_line->i_width
+ - p_string->i_x_margin;
+ }
+ else if( p_string->i_flags & OSD_ALIGN_LEFT )
+ {
+ pen_x = p_string->i_x_margin;
+ }
+ else
+ {
+ pen_x = i_pic_width / 2 - p_line->i_width / 2
+ + p_string->i_x_margin;
+ }
+
+ for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
+ {
+ FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
+ int i_alpha_offset = -1;
+ int i_offset = ( p_line->p_glyph_pos[ i ].y + pen_y -
+ p_glyph->top ) * i_pic_pitch +
+ p_line->p_glyph_pos[ i ].x + p_glyph->left;
+
+#define alpha p_vout->p_text_renderer_data->pi_gamma[ p_glyph->bitmap.buffer[ i_alpha_offset ] ]
+#define pixel p_in[ i_offset + x + pen_x ]
+
+ for( y = 0; y < p_glyph->bitmap.rows; y++ )
{
for( x = 0; x < p_glyph->bitmap.width; x++ )
{
+ i_alpha_offset++;
+ if( alpha == 0 ) continue;
+
+ pen_y--; i_offset -= i_pic_pitch;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_y++; i_offset += i_pic_pitch; pen_x--;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_x += 2;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_y++; i_offset += i_pic_pitch; pen_x--;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_y--; i_offset -= i_pic_pitch;
+ }
+ i_offset += i_pic_pitch;
+ }
+
+ i_alpha_offset = -1;
+ i_offset = ( p_line->p_glyph_pos[ i ].y + pen_y -
+ p_glyph->top ) * i_pic_pitch +
+ p_line->p_glyph_pos[ i ].x + p_glyph->left;
+ for( y = 0; y < p_glyph->bitmap.rows; y++ )
+ {
+ for( x = 0; x < p_glyph->bitmap.width; x++ )
+ {
+ i_alpha_offset++;
+ if( alpha == 0 ) continue;
+
pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 ) +
( 255 * alpha >> 8 );
-#undef alpha
-#undef pixel
}
+ i_offset += i_pic_pitch;
}
+#undef alpha
+#undef pixel
}
}
- }
- else
- {
- if ( p_string->i_flags & OSD_ALIGN_BOTTOM )
- {
- pen_y = p_pic->p[i_plane].i_lines - ( p_string->i_height>>1) -
- (p_string->i_y_margin>>1);
- }
- else
- {
- pen_y = p_string->i_y_margin >> 1;
- }
- pen_y += p_vout->p_text_renderer_data->p_face->size->metrics.height / 200;
- if ( p_string->i_flags & OSD_ALIGN_RIGHT )
- {
- pen_x = i_pitch - ( p_string->i_width >> 1 )
- - ( p_string->i_x_margin >> 1 );
- }
else
{
- pen_x = p_string->i_x_margin >> 1;
- }
+ if ( p_string->i_flags & OSD_ALIGN_BOTTOM )
+ {
+ pen_y = p_pic->p[i_plane].i_lines - (p_string->i_height>>1)
+ - (p_string->i_y_margin>>1);
+ }
+ else
+ {
+ pen_y = p_string->i_y_margin >> 1;
+ }
+ pen_y += p_vout->p_text_renderer_data->p_face->size->metrics.ascender >> 7;
+ if ( p_string->i_flags & OSD_ALIGN_RIGHT )
+ {
+ pen_x = i_pic_width - ( p_line->i_width >> 1 )
+ - ( p_string->i_x_margin >> 1 );
+ }
+ else if ( p_string->i_flags & OSD_ALIGN_LEFT )
+ {
+ pen_x = p_string->i_x_margin >> 1;
+ }
+ else
+ {
+ pen_x = i_pic_width / 2 - p_line->i_width / 4
+ + p_string->i_x_margin / 2;
+ }
- for( i = 0; p_string->pp_glyphs[i] != NULL; i++ )
- {
- if( p_string->pp_glyphs[i] )
+ for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
{
- FT_BitmapGlyph p_glyph = p_string->pp_glyphs[ i ];
+ FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
#define alpha p_vout->p_text_renderer_data->pi_gamma[ p_glyph->bitmap.buffer[ ( x + y * p_glyph->bitmap.width ) ] ]
-#define pixel p_in[ ( (p_string->p_glyph_pos[ i ].y>>1) + pen_y + (y>>1) - ( p_glyph->top >> 1 ) ) * i_pitch + ( x >> 1 ) + pen_x + ( p_string->p_glyph_pos[ i ].x >> 1 ) + ( p_glyph->left >>1) ]
+#define pixel p_in[ ( ( p_line->p_glyph_pos[ i ].y >> 1 ) + pen_y + ( y >> 1 ) - ( p_glyph->top >> 1 ) ) * i_pic_pitch + ( x >> 1 ) + pen_x + ( p_line->p_glyph_pos[ i ].x >> 1 ) + ( p_glyph->left >>1) ]
for( y = 0; y < p_glyph->bitmap.rows; y+=2 )
{
for( x = 0; x < p_glyph->bitmap.width; x+=2 )
{
+ if( alpha == 0 ) continue;
+
pixel = ( ( pixel * ( 0xFF - alpha ) ) >> 8 ) +
( 0x80 * alpha >> 8 );
#undef alpha
subpicture_sys_t *p_string = p_subpic->p_sys;
int x, y, pen_x, pen_y;
unsigned int i;
+ line_desc_t *p_line;
- uint8_t *p_in;
- int i_pitch = p_pic->p[0].i_pitch;
+ for( p_line = p_subpic->p_sys->p_lines; p_line != NULL;
+ p_line = p_line->p_next )
+ {
+ uint8_t *p_in;
+ int i_pic_pitch = p_pic->p[0].i_pitch;
+ int i_pic_width = p_pic->p[0].i_visible_pitch;
- p_in = p_pic->p->p_pixels;
+ p_in = p_pic->p[0].p_pixels;
- if ( p_string->i_flags & OSD_ALIGN_BOTTOM )
- {
- pen_y = p_pic->p->i_lines - p_string->i_height -
+ if ( p_string->i_flags & OSD_ALIGN_BOTTOM )
+ {
+ pen_y = p_pic->p[0].i_lines - p_string->i_height -
p_string->i_y_margin;
- }
- else
- {
- pen_y = p_string->i_y_margin;
- }
- pen_y += p_vout->p_text_renderer_data->p_face->size->metrics.height / 100;
- 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;
- }
+ }
+ else
+ {
+ pen_y = p_string->i_y_margin;
+ }
+ pen_y += p_vout->p_text_renderer_data->p_face->size->metrics.ascender >> 6;
+ if ( p_string->i_flags & OSD_ALIGN_RIGHT )
+ {
+ pen_x = i_pic_width - p_line->i_width
+ - p_string->i_x_margin;
+ }
+ else if ( p_string->i_flags & OSD_ALIGN_LEFT )
+ {
+ pen_x = p_string->i_x_margin;
+ }
+ else
+ {
+ pen_x = i_pic_width / 2 /2 - p_line->i_width / 2 + p_string->i_x_margin;
+ }
- /* TODO : set U & V bytes */
- for( i = 0; p_string->pp_glyphs[i] != NULL; i++ )
- {
- if( p_string->pp_glyphs[i] )
+ for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
{
- FT_BitmapGlyph p_glyph = p_string->pp_glyphs[ i ];
+ FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
#define alpha p_vout->p_text_renderer_data->pi_gamma[ p_glyph->bitmap.buffer[ x + y * p_glyph->bitmap.width ] ]
-#define pixel p_in[ ( p_string->p_glyph_pos[ i ].y + pen_y + y - p_glyph->top ) * i_pitch + 2 * ( x + pen_x + p_string->p_glyph_pos[ i ].x + p_glyph->left ) ]
- for( y = 0; y < p_glyph->bitmap.rows; y++ )
+#define pixel p_in[ ( p_line->p_glyph_pos[ i ].y + pen_y + y - p_glyph->top ) * i_pic_pitch + 2 * ( x + pen_x + p_line->p_glyph_pos[ i ].x + p_glyph->left ) ]
+ for(y = 0; y < p_glyph->bitmap.rows; y++ )
{
for( x = 0; x < p_glyph->bitmap.width; x++ )
{
+ if( alpha == 0 ) continue;
+
+ pen_y--;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_y++; pen_x--;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_x += 2;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_y++; pen_x--;
+ pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 );
+ pen_y--;
+ }
+ }
+ for(y = 0; y < p_glyph->bitmap.rows; y++ )
+ {
+ for( x = 0; x < p_glyph->bitmap.width; x++ )
+ {
+ if( alpha == 0 ) continue;
+
pixel = ( ( pixel * ( 255 - alpha ) ) >> 8 ) +
- ( 255 * alpha >> 8 );
+ ( 255 * alpha >> 8 );
+ }
+ }
#undef alpha
#undef pixel
+ }
+ }
+}
+
+/**
+ * Draw a string on a RV32 picture
+ */
+static void RenderRV32( vout_thread_t *p_vout, picture_t *p_pic,
+ const subpicture_t *p_subpic )
+{
+ subpicture_sys_t *p_string = p_subpic->p_sys;
+ int i_plane, x, y, pen_x, pen_y;
+ unsigned int i;
+ line_desc_t *p_line;
+
+ i_plane = 0;
+
+ for( p_line = p_subpic->p_sys->p_lines; p_line != NULL; p_line = p_line->p_next )
+ {
+ uint8_t *p_in;
+ int i_pic_pitch = p_pic->p[ i_plane ].i_pitch;
+ int i_pic_width = p_pic->p[ i_plane ].i_visible_pitch;
+
+ p_in = p_pic->p[ i_plane ].p_pixels;
+
+ 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;
+ }
+ pen_y += p_vout->p_text_renderer_data->p_face->size->metrics.ascender >> 6;
+ if ( p_string->i_flags & OSD_ALIGN_RIGHT )
+ {
+ pen_x = i_pic_width - p_line->i_width
+ - p_string->i_x_margin;
+ }
+ else if ( p_string->i_flags & OSD_ALIGN_LEFT )
+ {
+ pen_x = p_string->i_x_margin;
+ }
+ else
+ {
+ pen_x = i_pic_width / 2 / 4 - p_line->i_width / 2
+ + p_string->i_x_margin;
+ }
+
+ for( i = 0; p_line->pp_glyphs[i] != NULL; i++ )
+ {
+ FT_BitmapGlyph p_glyph = p_line->pp_glyphs[ i ];
+#define alpha p_vout->p_text_renderer_data->pi_gamma[ p_glyph->bitmap.buffer[ x + y * p_glyph->bitmap.width ] ]
+#define pixel( c ) p_in[ ( p_line->p_glyph_pos[ i ].y + pen_y + y - p_glyph->top ) * i_pic_pitch + ( x + pen_x + p_line->p_glyph_pos[ i ].x + p_glyph->left ) * 4 + c ]
+ for(y = 0; y < p_glyph->bitmap.rows; y++ )
+ {
+ for( x = 0; x < p_glyph->bitmap.width; x++ )
+ {
+ if( alpha == 0 ) continue;
+
+ pen_y--;
+ pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
+ pen_y++; pen_x--;
+ pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
+ pen_x += 2;
+ pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
+ pen_y++; pen_x--;
+ pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 );
+ pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 );
+ pen_y--;
+ }
+ }
+ for(y = 0; y < p_glyph->bitmap.rows; y++ )
+ {
+ for( x = 0; x < p_glyph->bitmap.width; x++ )
+ {
+ if( alpha == 0 ) continue;
+
+ pixel( 0 ) = ( ( pixel( 0 ) * ( 255 - alpha ) ) >> 8 ) +
+ ( 255 * alpha >> 8 );
+ pixel( 1 ) = ( ( pixel( 1 ) * ( 255 - alpha ) ) >> 8 ) +
+ ( 255 * alpha >> 8 );
+ pixel( 2 ) = ( ( pixel( 2 ) * ( 255 - alpha ) ) >> 8 ) +
+ ( 255 * alpha >> 8 );
}
}
+#undef alpha
+#undef pixel
}
}
}
-
/**
* This function receives a string and creates a subpicture for it. It
* also calculates the size needed for this string, and renders the
* 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 *AddText ( vout_thread_t *p_vout, int i_channel,
+ char *psz_string, text_style_t *p_style, int i_flags,
+ int i_hmargin, int i_vmargin, mtime_t i_start,
+ mtime_t i_stop )
{
subpicture_sys_t *p_string;
- int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous, i_char;
+ int i, i_pen_y, i_pen_x, i_error, i_glyph_index, i_previous;
subpicture_t *p_subpic;
+ line_desc_t *p_line, *p_next;
+ uint32_t *p_unicode_string, i_char;
+ int i_string_length;
+
+#if defined(HAVE_ICONV)
+ iconv_t iconv_handle;
+#endif
+
FT_BBox line;
FT_BBox glyph_size;
FT_Vector result;
FT_Glyph tmp_glyph;
+ /* Sanity check */
+ if ( !psz_string || !*psz_string )
+ {
+ return NULL;
+ }
+
result.x = 0;
result.y = 0;
line.xMin = 0;
line.yMin = 0;
line.yMax = 0;
+ p_line = 0;
+ p_string = 0;
+ p_subpic = 0;
+
/* Create and initialize a subpicture */
- p_subpic = vout_CreateSubPicture( p_vout, MEMORY_SUBPICTURE );
+ p_subpic = vout_CreateSubPicture( p_vout, i_channel, MEMORY_SUBPICTURE );
if ( p_subpic == NULL )
{
- return VLC_EGENERIC;
+ return NULL;
}
+ p_subpic->p_sys = 0;
p_subpic->pf_render = Render;
p_subpic->pf_destroy = FreeString;
p_subpic->i_start = i_start;
p_string = malloc( sizeof(subpicture_sys_t) );
if ( p_string == NULL )
{
- vout_DestroySubPicture( p_vout, p_subpic );
- return VLC_ENOMEM;
+ msg_Err( p_vout, "Out of memory" );
+ goto error;
}
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;
-
+ p_string->p_lines = 0;
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 )
+
+#if defined(HAVE_ICONV)
+ p_unicode_string = malloc( ( strlen(psz_string) + 1 ) * sizeof(uint32_t) );
+ if( p_unicode_string == NULL )
{
msg_Err( p_vout, "Out of memory" );
- return VLC_ENOMEM;
+ goto error;
}
- p_string->p_glyph_pos = malloc( sizeof( FT_Vector )
- * strlen( p_string->psz_text ) );
- if( p_string->p_glyph_pos == NULL )
+#if defined(WORDS_BIGENDIAN)
+ iconv_handle = iconv_open( "UCS-4BE", "UTF-8" );
+#else
+ iconv_handle = iconv_open( "UCS-4LE", "UTF-8" );
+#endif
+ if( iconv_handle == (iconv_t)-1 )
{
- msg_Err( p_vout, "Out of memory" );
- return VLC_ENOMEM;
+ msg_Warn( p_vout, "Unable to do convertion" );
+ goto error;
}
+ {
+ 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 = iconv( iconv_handle, &p_in_buffer, &i_in_bytes, &p_out_buffer, &i_out_bytes_left );
+ if( i_in_bytes )
+ {
+ msg_Warn( p_vout, "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);
+ }
+
+#if defined(HAVE_FRIBIDI)
+ {
+ 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, NULL, NULL,
+ NULL );
+ free( p_unicode_string );
+ p_unicode_string = p_fribidi_string;
+ p_fribidi_string[ i_string_length ] = 0;
+ }
+#endif
+#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_vout, "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 glyph face->glyph
- if ( i_char == 13 ) /* ignore CR chars wherever they may be */
+
+ while( *p_unicode_string )
+ {
+ i_char = *p_unicode_string++;
+ if ( i_char == '\r' ) /* ignore CR chars wherever they may be */
{
continue;
}
+
if ( i_char == '\n' )
{
- i_pen_x = 0;
+ p_next = NewLine( psz_string );
+ if( p_next == NULL )
+ {
+ msg_Err( p_vout, "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->size->metrics.height / 100;
+ 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->size->metrics.height / 100;
+ i_pen_y += face->size->metrics.height >> 6;
+ msg_Dbg( p_vout, "Creating new line, i is %d", i );
+ 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
&& i_previous )
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 )
{
msg_Err( p_vout, "FT_Load_Glyph returned %d", i_error );
- return VLC_EGENERIC;
+ goto 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;
+ goto error;
}
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 );
+ i_error = FT_Glyph_To_Bitmap( &tmp_glyph, ft_render_mode_normal,
+ NULL, 1 );
if ( i_error ) continue;
- p_string->pp_glyphs[ i ] = (FT_BitmapGlyph)tmp_glyph;
+ 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_pen_x += glyph->advance.x >> 6;
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;
+ return p_subpic;
+
+#undef face
+#undef glyph
+
+ error:
+ FreeString( p_subpic );
+ vout_DestroySubPicture( p_vout, p_subpic );
+ return NULL;
}
static void FreeString( subpicture_t *p_subpic )
{
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_subpic->p_sys == NULL ) return;
+
+ for( p_line = p_string->p_lines; p_line != NULL; p_line = p_next )
{
- FT_Done_Glyph( (FT_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 );
}
+#if !defined( HAVE_ICONV )
/* convert one or more utf8 bytes into a unicode character */
static int GetUnicodeCharFromUTF8( byte_t **ppsz_utf8_string )
{
(*ppsz_utf8_string)++;
return i_char;
}
+#endif
+
+static line_desc_t *NewLine( byte_t *psz_string )
+{
+ int i_count;
+ line_desc_t *p_line = malloc( sizeof(line_desc_t) );
+ if( !p_line )
+ {
+ return NULL;
+ }
+ 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 )
+ {
+ free( p_line );
+ return NULL;
+ }
+ p_line->p_glyph_pos = malloc( sizeof( FT_Vector )
+ * i_count + 1 );
+ if( p_line->p_glyph_pos == NULL )
+ {
+ free( p_line->pp_glyphs );
+ free( p_line );
+ return NULL;
+ }
+
+ return p_line;
+}
projects / vlc / blobdiff