diff options
Diffstat (limited to 'libskrift_srgb_postprocess.c')
| -rw-r--r-- | libskrift_srgb_postprocess.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/libskrift_srgb_postprocess.c b/libskrift_srgb_postprocess.c new file mode 100644 index 0000000..3e994c1 --- /dev/null +++ b/libskrift_srgb_postprocess.c @@ -0,0 +1,27 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + +#define GAMMA(TYPE, POW) (t <= (TYPE)0.0031308f ? (TYPE)12.92f * t : (TYPE)1.055f * POW(t, 1 / (TYPE)2.4f) - (TYPE)0.055f) + +static const uint8_t gamma_u8[] = { + 0, 13, 22, 28, 34, 38, 42, 46, 50, 53, 56, 59, 61, 64, 66, 69, + 71, 73, 75, 77, 79, 81, 83, 85, 86, 88, 90, 92, 93, 95, 96, 98, + 99, 101, 102, 104, 105, 106, 108, 109, 110, 112, 113, 114, 115, 117, 118, 119, + 120, 121, 122, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, + 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 148, 149, 150, 151, + 152, 153, 154, 155, 155, 156, 157, 158, 159, 159, 160, 161, 162, 163, 163, 164, + 165, 166, 167, 167, 168, 169, 170, 170, 171, 172, 173, 173, 174, 175, 175, 176, + 177, 178, 178, 179, 180, 180, 181, 182, 182, 183, 184, 185, 185, 186, 187, 187, + 188, 189, 189, 190, 190, 191, 192, 192, 193, 194, 194, 195, 196, 196, 197, 197, + 198, 199, 199, 200, 200, 201, 202, 202, 203, 203, 204, 205, 205, 206, 206, 207, + 208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214, 214, 215, 215, 216, + 216, 217, 218, 218, 219, 219, 220, 220, 221, 221, 222, 222, 223, 223, 224, 224, + 225, 226, 226, 227, 227, 228, 228, 229, 229, 230, 230, 231, 231, 232, 232, 233, + 233, 234, 234, 235, 235, 236, 236, 237, 237, 238, 238, 238, 239, 239, 240, 240, + 241, 241, 242, 242, 243, 243, 244, 244, 245, 245, 246, 246, 246, 247, 247, 248, + 248, 249, 249, 250, 250, 251, 251, 251, 252, 252, 253, 253, 254, 254, 255, 255 +}; + +#define FUNCTION_NAME libskrift_srgb_preprocess + +#include "srgb-gamma.h" |