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[base] Empower `FT_Library_SetLcdFilterWeights'.

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* src/base/ftlcdfil.c (FT_Library_SetLcdFilterWeights): Enable filter
in addition to setting weights.
(FT_Library_SetLcdFilter): Clean out FT_FORCE_LIGHT_LCD_FILTER and
FT_FORCE_LEGACY_LCD_FILTER.
* include/freetype/ftlcdfil.h: Documentation update.
This commit is contained in:
Alexei Podtelezhnikov 2016-01-14 23:31:08 -05:00
parent 441506656f
commit 32760d33d0
3 changed files with 14 additions and 21 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2016-01-14 Alexei Podtelezhnikov <apodtele@gmail.com>
[base] Empower `FT_Library_SetLcdFilterWeights'.
* src/base/ftlcdfil.c (FT_Library_SetLcdFilterWeights): Enable filter
in addition to setting weights.
(FT_Library_SetLcdFilter): Clean out FT_FORCE_LIGHT_LCD_FILTER and
FT_FORCE_LEGACY_LCD_FILTER.
* include/freetype/ftlcdfil.h: Documentation update.
2016-01-12 Werner Lemberg <wl@gnu.org>
Don't use macro names that start with `_[A-Z]' [3/3].

7
include/freetype/ftlcdfil.h
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@ -250,8 +250,8 @@ FT_BEGIN_HEADER
* FT_Library_SetLcdFilterWeights
*
* @description:
* Use this function to override default or light filter weights
* selected by @FT_Library_SetLcdFilter.
* This function can be used to enable LCD filter with custom weights,
* instead of using presets in @FT_Library_SetLcdFilter.
*
* @input:
* library ::
@ -271,9 +271,6 @@ FT_BEGIN_HEADER
* defined in your build of the library, which should correspond to all
* default builds of FreeType.
*
* This function must be called after @FT_Library_SetLcdFilter to have
* any effect on default or light filter.
*
* @since:
* 2.4.0
*/

18
src/base/ftlcdfil.c
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@ -296,6 +296,8 @@
return FT_THROW( Invalid_Argument );
ft_memcpy( library->lcd_weights, weights, 5 );
library->lcd_filter_func = _ft_lcd_filter_fir;
library->lcd_extra = 2;
return FT_Err_Ok;
}
@ -322,25 +324,9 @@
break;
case FT_LCD_FILTER_DEFAULT:
#if defined( FT_FORCE_LEGACY_LCD_FILTER )
library->lcd_filter_func = _ft_lcd_filter_legacy;
library->lcd_extra = 0;
#elif defined( FT_FORCE_LIGHT_LCD_FILTER )
ft_memcpy( library->lcd_weights, light_filter, 5 );
library->lcd_filter_func = _ft_lcd_filter_fir;
library->lcd_extra = 2;
#else
ft_memcpy( library->lcd_weights, default_filter, 5 );
library->lcd_filter_func = _ft_lcd_filter_fir;
library->lcd_extra = 2;
#endif
break;
case FT_LCD_FILTER_LIGHT: