include/encode/SkICC.h

/*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkICC_DEFINED
#define SkICC_DEFINED

#include "include/core/SkRefCnt.h"
#include "include/private/base/SkAPI.h"

#include <cstdint>

class SkData;
struct skcms_ICCProfile;
struct skcms_Matrix3x3;
struct skcms_TransferFunction;

SK_API sk_sp<SkData> SkWriteICCProfile(const skcms_TransferFunction&,
                                       const skcms_Matrix3x3& toXYZD50);

SK_API sk_sp<SkData> SkWriteICCProfile(const skcms_ICCProfile*, const char* description);

// Utility function for populating the grid_16 member of skcms_A2B and skcms_B2A
// structures. This converts a point in XYZD50 to its representation in grid_16_lab.
// It will write 6 bytes. The behavior of this function matches how skcms will decode
// values, but might not match the specification, see skbug.com/40044907.
SK_API void SkICCFloatXYZD50ToGrid16Lab(const float* float_xyz, uint8_t* grid16_lab);

// Utility function for popluating the table_16 member of skcms_Curve structure.
// This converts a float to its representation in table_16. It will write 2 bytes.
SK_API void SkICCFloatToTable16(const float f, uint8_t* table_16);

#endif//SkICC_DEFINED