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Commit 223ebac6 authored by Mark Moriarty's avatar Mark Moriarty
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freetype.c Change opacity to 0...255, add --freetype-color hex_RGB shortcut

parent 20f007d0
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Showing with 50 additions and 16 deletions
modules/misc/freetype.c
View file @ 223ebac6
......@@ -82,9 +82,12 @@ 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..100%")
#define OPACITY_TEXT N_("Opacity, 0..255")
#define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of overlay text. " \
"0 = totally transparent, 100 = totally opaque. " )
"0 = totally transparent, 255 = totally opaque. " )
#define COLOR_TEXT N_("Color, RGB, 0x000000 - 0xFFFFFF")
#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" )
......@@ -101,8 +104,10 @@ vlc_module_begin();
VLC_FALSE );
add_integer( "freetype-fontsize", 0, NULL, FONTSIZE_TEXT,
FONTSIZE_LONGTEXT, VLC_TRUE );
add_integer( "freetype-opacity", 100, NULL, OPACITY_TEXT,
add_integer( "freetype-opacity", 255, NULL, OPACITY_TEXT,
OPACITY_LONGTEXT, VLC_TRUE );
add_integer( "freetype-color", 0xFFFFFF, NULL, COLOR_TEXT,
COLOR_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 );
......@@ -136,7 +141,8 @@ struct line_desc_t
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,
uint8_t, uint8_t, uint8_t );
static void FreeString( subpicture_data_t * );
static void FreeLine( line_desc_t * );
......@@ -151,7 +157,8 @@ struct filter_sys_t
FT_Library p_library; /* handle to library */
FT_Face p_face; /* handle to face object */
vlc_bool_t i_use_kerning;
int i_opacity; /* default is opaque */
uint8_t i_opacity;
uint8_t i_red, i_green, i_blue; /* color components */
uint8_t pi_gamma[256];
};
......@@ -178,7 +185,11 @@ static int Create( vlc_object_t *p_this )
}
p_sys->p_face = 0;
p_sys->p_library = 0;
p_sys->i_opacity = 100; /* default to fully opaque */
/* default to opaque letters, white (all colors set to 255): */
p_sys->i_opacity = 255;
p_sys->i_red = 255;
p_sys->i_green = 255;
p_sys->i_blue = 255;
for( i = 0; i < 256; i++ )
{
......@@ -193,6 +204,8 @@ static int Create( vlc_object_t *p_this )
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "freetype-opacity",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "freetype-color",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
/* Look what method was requested */
var_Get( p_filter, "freetype-font", &val );
......@@ -244,12 +257,24 @@ static int Create( vlc_object_t *p_this )
var_Get( p_filter, "freetype-opacity", &val );
if( val.i_int )
{
if ( ( val.i_int > -1 ) && ( val.i_int < 101 ) ) /* valid range 0 to 100% */
if ( ( val.i_int > -1 ) && ( val.i_int < 256 ) ) /* valid range 0 to 255 */
{
p_sys->i_opacity = val.i_int;
}
else msg_Warn(p_filter, "Invalid freetype opacity specified, using 100%");
else msg_Warn(p_filter, "Invalid freetype opacity specified, using 255");
}
var_Get( p_filter, "freetype-color", &val );
if( val.i_int )
{
if ( ( val.i_int > -1 ) && ( val.i_int < 0xFFFFFF ) ) /* valid range */
{
p_sys->i_blue = val.i_int & 0x000000FF;
p_sys->i_green = (val.i_int & 0x0000FF00)/256;
p_sys->i_red = (val.i_int & 0x00FF0000)/(256*256);
}
else msg_Warn(p_filter, "Invalid freetype color specified, using white [0xFFFFFF]");
}
var_Get( p_filter, "freetype-fontsize", &val );
if( val.i_int )
{
......@@ -307,13 +332,20 @@ static void Destroy( vlc_object_t *p_this )
* 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,
uint8_t red, uint8_t green, uint8_t 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) (0.257 * red) + (0.504 * green) + (0.098 * blue) + 16;
i_u = (uint8_t) -(0.148 * red) - (0.291 * green) + (0.439 * blue) + 128;
i_v = (uint8_t) (0.439 * red) - (0.368 * green) - (0.071 * blue) + 128;
/* Create a new subpicture region */
memset( &fmt, 0, sizeof(video_format_t) );
......@@ -343,7 +375,7 @@ static void Render( filter_t *p_filter, subpicture_t *p_spu,
memset( p_a, 0x00, i_pitch * p_spu->p_region->fmt.i_height );
#define pi_gamma p_sys->pi_gamma
#define opacity p_sys->i_opacity
/* #define opacity p_sys->i_opacity */
for( p_line = p_string->p_lines; p_line != NULL; p_line = p_line->p_next )
{
......@@ -372,16 +404,16 @@ static void Render( filter_t *p_filter, subpicture_t *p_spu,
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]])*opacity/200;
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]])*opacity/200;
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]])*opacity/200;
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]])*opacity/200;
pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]])*opacity/512;
i_offset -= i_pitch;
}
i_offset += i_pitch;
......@@ -396,7 +428,8 @@ static void Render( filter_t *p_filter, subpicture_t *p_spu,
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]]*opacity/100;
pi_gamma[p_glyph->bitmap.buffer[i_bitmap_offset]]*opacity/256;
p_u[i_offset + x] = i_u; p_v[i_offset + x] = i_v;
}
i_offset += i_pitch;
}
......@@ -659,7 +692,8 @@ static subpicture_t *RenderText( filter_t *p_filter, block_t *p_block )
#undef face
#undef glyph
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 );
......
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