diff options
Diffstat (limited to 'src/base/ftlcdfil.c')
| -rw-r--r-- | src/base/ftlcdfil.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/src/base/ftlcdfil.c b/src/base/ftlcdfil.c index 0da4ba1..09a9551 100644 --- a/src/base/ftlcdfil.c +++ b/src/base/ftlcdfil.c @@ -21,6 +21,9 @@ #include FT_IMAGE_H #include FT_INTERNAL_OBJECTS_H +#include <math.h> +#include <string.h> +#include <strings.h> #ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING @@ -287,10 +290,51 @@ { 0x00, 0x55, 0x56, 0x55, 0x00 }; /* the values here sum up to a value larger than 256, */ /* providing a cheap gamma correction */ - static const FT_Byte default_filter[5] = + static FT_Byte default_filter[5] = { 0x10, 0x40, 0x70, 0x40, 0x10 }; +#ifdef FT_CONFIG_OPTION_INFINALITY_PATCHSET + int checked_filter_params_env = 0; + if ( checked_filter_params_env == 0 ) + { + char *filter_params = getenv( "INFINALITY_FT_FILTER_PARAMS" ); + if ( filter_params != NULL && strcmp(filter_params, "") != 0 ) + { + float f1, f2, f3, f4, f5; + if ( strcasecmp(filter_params, "default" ) != 0) + { + int args_assigned = 0; + args_assigned = sscanf ( filter_params, "%f %f %f %f %f", &f1, &f2, &f3, &f4, &f5 ); + + if ( args_assigned == 5 ) + { + if ( f1 + f2 + f3 + f4 + f5 > 5 ) + { + /* Assume we were given integers instead of floats */ + /* 0 to 100 */ + default_filter[0] = (FT_Byte) (f1 * 2.55f + 0.5f); + default_filter[1] = (FT_Byte) (f2 * 2.55f + 0.5f); + default_filter[2] = (FT_Byte) (f3 * 2.55f + 0.5f); + default_filter[3] = (FT_Byte) (f4 * 2.55f + 0.5f); + default_filter[4] = (FT_Byte) (f5 * 2.55f + 0.5f); + } + else + { + /* Assume we were given floating point values */ + /* 0 to 1.0 */ + default_filter[0] = (FT_Byte) (f1 * 255.0f + 0.5f); + default_filter[1] = (FT_Byte) (f2 * 255.0f + 0.5f); + default_filter[2] = (FT_Byte) (f3 * 255.0f + 0.5f); + default_filter[3] = (FT_Byte) (f4 * 255.0f + 0.5f); + default_filter[4] = (FT_Byte) (f5 * 255.0f + 0.5f); + } + } + } + } + checked_filter_params_env = 1; + } +#endif if ( !library ) return FT_Err_Invalid_Argument; |