/*****************************************************************************
* freetype.c : Put text on the video, using freetype2
*****************************************************************************
- * Copyright (C) 2002, 2003 VideoLAN
+ * Copyright (C) 2002 - 2005 VideoLAN
* $Id$
*
* Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
static int Create ( vlc_object_t * );
static void Destroy( vlc_object_t * );
-static subpicture_t *RenderText( filter_t *, block_t * );
+/* The RenderText call maps to pf_render_string, defined in vlc_filter.h */
+static subpicture_t *RenderText( filter_t *, block_t *, int, int, int );
static line_desc_t *NewLine( byte_t * );
/*****************************************************************************
#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 OPACITY_TEXT N_("Opacity, 0..255")
+#define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of overlay text. " \
+ "1 = transparent, 255 = totally opaque. " )
+#define COLOR_TEXT N_("Text Default Color")
+#define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, hexadecimal." \
+ "#000000 = all colors off, 0xFF0000 = just Red, 0xFFFFFF = all color on [White]" )
#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") };
+static int pi_color_values[] = { 0x00000000, 0x00808080, 0x00C0C0C0, 0x00FFFFFF, 0x00800000,
+ 0x00FF0000, 0x00FF00FF, 0x00FFFF00, 0x00808000, 0x00008000, 0x00008080,
+ 0x0000FF00, 0x00800080, 0x00000080, 0x000000FF, 0x0000FFFF};
+static char *ppsz_color_descriptions[] = { N_("Black"), N_("Gray"), N_("Silver"), N_("White"),
+ N_("Maroon"), N_("Red"), N_("Fuchsia"), N_("Yellow"),
+ N_("Olive"), N_("Green"), N_("Teal"), N_("Lime"), N_("Purple"),
+ N_("Navy"), N_("Blue"), N_("Aqua") };
vlc_module_begin();
set_description( _("freetype2 font renderer") );
VLC_FALSE );
add_integer( "freetype-fontsize", 0, NULL, FONTSIZE_TEXT,
FONTSIZE_LONGTEXT, VLC_TRUE );
+ /* opacity valid on 0..255, with default 255 = fully opaque */
+ add_integer_with_range( "freetype-opacity", 255, 0, 255, NULL,
+ OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
+ /* hook to the color values list, with default 0x00ffffff = white */
+ add_integer( "freetype-color", 0x00FFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT, VLC_TRUE );
+ change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
+
add_integer( "freetype-rel-fontsize", 16, NULL, FONTSIZER_TEXT,
FONTSIZER_LONGTEXT, VLC_FALSE );
change_integer_list( pi_sizes, ppsz_sizes_text, 0 );
line_desc_t *p_next;
};
-static void Render ( filter_t *, subpicture_t *, subpicture_data_t * );
+static void Render ( filter_t *, subpicture_t *, subpicture_data_t *, uint8_t,
+ int, int, int );
static void FreeString( subpicture_data_t * );
static void FreeLine( line_desc_t * );
FT_Library p_library; /* handle to library */
FT_Face p_face; /* handle to face object */
vlc_bool_t i_use_kerning;
+ uint8_t i_font_opacity; /* freetype-opacity */
+ int i_font_color; /* freetype-color */
+ int i_red, i_blue, i_green; /* function vars to render */
+ int i_font_size;
+ uint8_t i_opacity; /* function var to render */
uint8_t pi_gamma[256];
};
filter_sys_t *p_sys;
char *psz_fontfile = NULL;
int i, i_error;
- int i_fontsize = 0;
vlc_value_t val;
/* Allocate structure */
}
p_sys->p_face = 0;
p_sys->p_library = 0;
-
+ p_sys->i_font_size = 0;
+
for( i = 0; i < 256; i++ )
{
p_sys->pi_gamma[i] = (uint8_t)( pow( (double)i * 255.0f, 0.5f ) );
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "freetype-rel-fontsize",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ var_Create( p_filter, "freetype-opacity", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
+ var_Get( p_filter, "freetype-opacity", &val );
+ p_sys->i_font_opacity = __MAX( __MIN( val.i_int, 255 ), 0 );
+ var_Create( p_filter, "freetype-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ var_Get( p_filter, "freetype-color", &val );
+ if ( ( val.i_int > -1 ) && ( val.i_int < 0x01000000 ) ) /* valid range */
+ {
+ p_sys->i_font_color = val.i_int;
+ }
+ else msg_Warn(p_filter, "Invalid freetype color specified, using white [0xFFFFFF]");
/* Look what method was requested */
var_Get( p_filter, "freetype-font", &val );
p_sys->i_use_kerning = FT_HAS_KERNING( p_sys->p_face );
+
var_Get( p_filter, "freetype-fontsize", &val );
if( val.i_int )
{
- i_fontsize = val.i_int;
+ p_sys->i_font_size = val.i_int;
}
else
{
var_Get( p_filter, "freetype-rel-fontsize", &val );
- i_fontsize = (int)p_filter->fmt_out.video.i_height / val.i_int;
+ p_sys->i_font_size = (int)p_filter->fmt_out.video.i_height / val.i_int;
}
- if( i_fontsize <= 0 )
+ if( p_sys->i_font_size <= 0 )
{
msg_Warn( p_filter, "Invalid fontsize, using 12" );
- i_fontsize = 12;
+ p_sys->i_font_size = 12;
}
- msg_Dbg( p_filter, "Using fontsize: %i", i_fontsize);
+ msg_Dbg( p_filter, "Using fontsize: %i", p_sys->i_font_size);
- i_error = FT_Set_Pixel_Sizes( p_sys->p_face, 0, i_fontsize );
+ i_error = FT_Set_Pixel_Sizes( p_sys->p_face, 0, p_sys->i_font_size );
if( i_error )
{
- msg_Err( p_filter, "couldn't set font size to %d", i_fontsize );
+ msg_Err( p_filter, "couldn't set font size to %d", p_sys->i_font_size );
goto error;
}
{
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( filter_t *p_filter, subpicture_t *p_spu,
- subpicture_data_t *p_string )
+ subpicture_data_t *p_string, uint8_t opacity,
+ int red, int green, int blue)
{
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;
+ uint8_t i_y, i_u, i_v; /* YUV values, derived from incoming RGB */
+
+ /* calculate text color components: */
+ i_y = (uint8_t) ( ( 66 * red + 129 * green + 25 * blue + 128) >> 8) + 16;
+ i_u = (uint8_t) ( ( -38 * red - 74 * green + 112 * blue + 128) >> 8) + 128;
+ i_v = (uint8_t) ( ( 112 * red - 94 * green - 18 * blue + 128) >> 8) + 128;
/* Create a new subpicture region */
memset( &fmt, 0, sizeof(video_format_t) );
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) */
+ /* Initialize the region pixels */
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 );
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;
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
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;
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
x += 2;
p_a[i_offset + x] = ((uint16_t)p_a[i_offset + x] +
- pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])/2;
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
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;
+ pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
i_offset -= i_pitch;
}
i_offset += i_pitch;
{
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]];
+ p_y[i_offset + x] = i_y*opacity*pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]]/(256*256);
+ p_u[i_offset + x] = i_u;
+ p_v[i_offset + x] = i_v;
}
i_offset += i_pitch;
}
* needed glyphs into memory. It is used as pf_add_string callback in
* the vout method by this module
*/
-static subpicture_t *RenderText( filter_t *p_filter, block_t *p_block )
+static subpicture_t *RenderText( filter_t *p_filter, block_t *p_block,
+ int font_color, int font_opacity, int font_size )
{
filter_sys_t *p_sys = p_filter->p_sys;
subpicture_t *p_subpic = 0;
#endif
if( iconv_handle == (vlc_iconv_t)-1 )
{
- msg_Warn( p_filter, "unable to do convertion" );
+ msg_Warn( p_filter, "unable to do conversion" );
goto error;
}
+ /* Set up the glyphs for the desired font size. By definition,
+ p_sys->i_font_size is a valid value, else the initial Create would
+ have failed. Using -1 as a flag to use the freetype-fontsize */
+ if ( font_size < 0 )
+ {
+ FT_Set_Pixel_Sizes( p_sys->p_face, 0, p_sys->i_font_size );
+ }
+ else
+ {
+ i_error = FT_Set_Pixel_Sizes( p_sys->p_face, 0, font_size );
+ if( i_error )
+ {
+ msg_Warn( p_filter, "Invalid font size to RenderText, using %d",
+ p_sys->i_font_size );
+ FT_Set_Pixel_Sizes( p_sys->p_face, 0, p_sys->i_font_size );
+ }
+ }
+
{
char *p_in_buffer, *p_out_buffer;
size_t i_in_bytes, i_out_bytes, i_out_bytes_left, i_ret;
#undef face
#undef glyph
+/* check to see whether to use the default color/opacity, or another one: */
+ if( font_color < 0 )
+ {
+ p_sys->i_blue = p_sys->i_font_color & 0x000000FF;
+ p_sys->i_green = (p_sys->i_font_color & 0x0000FF00)/256;
+ p_sys->i_red = (p_sys->i_font_color & 0x00FF0000)/(256*256);
+ }
+ else
+ {
+ p_sys->i_blue = font_color & 0x000000FF;
+ p_sys->i_green = (font_color & 0x0000FF00)/256;
+ p_sys->i_red = (font_color & 0x00FF0000)/(256*256);
+ }
+ if( font_opacity < 0 )
+ {
+ p_sys->i_opacity = p_sys->i_font_opacity;
+ }
+ else
+ {
+ p_sys->i_opacity = (uint8_t) ( font_opacity & 0x000000FF );
+ }
- Render( p_filter, p_subpic, p_string );
+ Render( p_filter, p_subpic, p_string, p_sys->i_opacity,
+ p_sys->i_red, p_sys->i_green, p_sys->i_blue );
FreeString( p_string );
block_Release( p_block );
if( psz_unicode_orig ) free( psz_unicode_orig );
projects / vlc / blobdiff