blob: 3e2fc2be827d080aad93747f36487735e573cb4c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#pragma once
// skcms_internal.h contains APIs shared by skcms' internals and its test tools.
// Please don't use this header from outside the skcms repo.
#include "skcms.h"
#include <stdbool.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
// ~~~~ General Helper Macros ~~~~
#define ARRAY_COUNT(arr) (int)(sizeof((arr)) / sizeof(*(arr)))
// ~~~~ skcms_TransferFunction ~~~~
float skcms_TransferFunction_eval (const skcms_TransferFunction*, float);
bool skcms_TransferFunction_invert(const skcms_TransferFunction*, skcms_TransferFunction*);
// ~~~~ skcms_ICCProfile ~~~~
bool skcms_GetCHAD(const skcms_ICCProfile* profile, skcms_Matrix3x3* m);
// 252 of a random shuffle of all possible bytes.
// 252 is evenly divisible by 3 and 4. Only 192, 10, 241, and 43 are missing.
// Used for ICC profile equivalence testing.
extern const uint8_t skcms_252_random_bytes[252];
// ~~~~ Linear Algebra ~~~~
// It is _not_ safe to alias the pointers to invert in-place.
bool skcms_Matrix3x3_invert(const skcms_Matrix3x3*, skcms_Matrix3x3*);
skcms_Matrix3x3 skcms_Matrix3x3_concat(const skcms_Matrix3x3* A, const skcms_Matrix3x3* B);
// ~~~~ Portable Math ~~~~
static inline float floorf_(float x) {
float roundtrip = (float)((int)x);
return roundtrip > x ? roundtrip - 1 : roundtrip;
}
static inline float fabsf_(float x) { return x < 0 ? -x : x; }
float powf_(float, float);
#ifdef __cplusplus
}
#endif
|
