tests/ICCTest.cpp - platform/external/skqp - Gitiles

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

 #include "Resources.h"
 #include "SkColorSpace.h"
 #include "SkColorSpacePriv.h"
 #include "SkColorSpace_XYZ.h"
 #include "SkData.h"
 #include "SkICC.h"
 #include "SkICCPriv.h"
 #include "SkMatrix44.h"
 #include "SkStream.h"
 #include "Test.h"

 static bool almost_equal(float a, float b) {
     return SkTAbs(a - b) < 0.001f;
 }

 static inline void test_to_xyz_d50(skiatest::Reporter* r, SkICC* icc, bool shouldSucceed,
                                    const float* reference) {
     SkMatrix44 result(SkMatrix44::kUninitialized_Constructor);
     REPORTER_ASSERT(r, shouldSucceed == icc->toXYZD50(&result));
     if (shouldSucceed) {
         float resultVals[16];
         result.asColMajorf(resultVals);
         for (int i = 0; i < 16; i++) {
             REPORTER_ASSERT(r, almost_equal(resultVals[i], reference[i]));
         }
     }
 }

 DEF_TEST(ICC_ToXYZD50, r) {
     const float z30Reference[16] = {
         0.59825f, 0.27103f, 0.00603f, 0.0f, 0.22243f, 0.67447f, 0.07368f, 0.0f, 0.14352f, 0.05449f,
         0.74519f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f,
     };

     sk_sp<SkData> data = SkData::MakeFromFileName(
             GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
     sk_sp<SkICC> z30 = SkICC::Make(data->data(), data->size());
     test_to_xyz_d50(r, z30.get(), true, z30Reference);

     const float z32Reference[16] = {
         0.61583f, 0.28789f, 0.00513f, 0.0f, 0.20428f, 0.66972f, 0.06609f, 0.0f, 0.14409f, 0.04237f,
         0.75368f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f,
     };

     data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
     sk_sp<SkICC> z32 = SkICC::Make(data->data(), data->size());
     test_to_xyz_d50(r, z32.get(), true, z32Reference);

     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
     sk_sp<SkICC> upperLeft = SkICC::Make(data->data(), data->size());
     test_to_xyz_d50(r, upperLeft.get(), false, z32Reference);

     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
     sk_sp<SkICC> upperRight = SkICC::Make(data->data(), data->size());
     test_to_xyz_d50(r, upperRight.get(), false, z32Reference);
 }

 static inline void test_is_numerical_transfer_fn(skiatest::Reporter* r, SkICC* icc,
                                                  bool shouldSucceed,
                                                  const SkColorSpaceTransferFn& reference) {
     SkColorSpaceTransferFn result;
     REPORTER_ASSERT(r, shouldSucceed == icc->isNumericalTransferFn(&result));
     if (shouldSucceed) {
         REPORTER_ASSERT(r, 0 == memcmp(&result, &reference, sizeof(SkColorSpaceTransferFn)));
     }
 }

 DEF_TEST(ICC_IsNumericalTransferFn, r) {
     SkColorSpaceTransferFn referenceFn;
     referenceFn.fA = 1.0f;
     referenceFn.fB = 0.0f;
     referenceFn.fC = 0.0f;
     referenceFn.fD = 0.0f;
     referenceFn.fE = 0.0f;
     referenceFn.fF = 0.0f;
     referenceFn.fG = 2.2f;

     sk_sp<SkData> data = SkData::MakeFromFileName(
             GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
     sk_sp<SkICC> z30 = SkICC::Make(data->data(), data->size());
     test_is_numerical_transfer_fn(r, z30.get(), true, referenceFn);

     data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
     sk_sp<SkICC> z32 = SkICC::Make(data->data(), data->size());
     test_is_numerical_transfer_fn(r, z32.get(), true, referenceFn);

     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
     sk_sp<SkICC> upperLeft = SkICC::Make(data->data(), data->size());
     test_is_numerical_transfer_fn(r, upperLeft.get(), false, referenceFn);

     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
     sk_sp<SkICC> upperRight = SkICC::Make(data->data(), data->size());
     test_is_numerical_transfer_fn(r, upperRight.get(), false, referenceFn);
 }

 static inline void test_write_icc(skiatest::Reporter* r, const SkColorSpaceTransferFn& fn,
                                   const SkMatrix44& toXYZD50, SkColorSpace* reference,
                                   bool writeToFile) {
     sk_sp<SkData> profile = SkICC::WriteToICC(fn, toXYZD50);
     if (writeToFile) {
         SkFILEWStream stream("out.icc");
         stream.write(profile->data(), profile->size());
     }

     sk_sp<SkColorSpace> colorSpace = SkColorSpace::MakeICC(profile->data(), profile->size());
     REPORTER_ASSERT(r, SkColorSpace::Equals(reference, colorSpace.get()));
 }

 DEF_TEST(ICC_WriteICC, r) {
     SkColorSpaceTransferFn adobeFn;
     adobeFn.fA = 1.0f;
     adobeFn.fB = 0.0f;
     adobeFn.fC = 0.0f;
     adobeFn.fD = 0.0f;
     adobeFn.fE = 0.0f;
     adobeFn.fF = 0.0f;
     adobeFn.fG = 2.2f;
     SkMatrix44 adobeMatrix(SkMatrix44::kUninitialized_Constructor);
     adobeMatrix.set3x3RowMajorf(gAdobeRGB_toXYZD50);
     test_write_icc(r, adobeFn, adobeMatrix,
                    SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named).get(), false);

     SkColorSpaceTransferFn srgbFn;
     srgbFn.fA = 1.0f / 1.055f;
     srgbFn.fB = 0.055f / 1.055f;
     srgbFn.fC = 1.0f / 12.92f;
     srgbFn.fD = 0.04045f;
     srgbFn.fE = 0.0f;
     srgbFn.fF = 0.0f;
     srgbFn.fG = 2.4f;
     SkMatrix44 srgbMatrix(SkMatrix44::kUninitialized_Constructor);
     srgbMatrix.set3x3RowMajorf(gSRGB_toXYZD50);
     test_write_icc(r, srgbFn, srgbMatrix, SkColorSpace::MakeSRGB().get(),
                    false);

     SkString adobeTag = SkICCGetColorProfileTag(adobeFn, adobeMatrix);
     SkString srgbTag = SkICCGetColorProfileTag(srgbFn, srgbMatrix);
     REPORTER_ASSERT(r, adobeTag != srgbTag);
     REPORTER_ASSERT(r, srgbTag.equals("sRGB"));
     REPORTER_ASSERT(r, adobeTag.equals("AdobeRGB"));
 }

 static inline void test_raw_transfer_fn(skiatest::Reporter* r, SkICC* icc) {
     SkICC::Tables tables;
     bool result = icc->rawTransferFnData(&tables);
     REPORTER_ASSERT(r, result);

     REPORTER_ASSERT(r, 0.0f == tables.red()[0]);
     REPORTER_ASSERT(r, 0.0f == tables.green()[0]);
     REPORTER_ASSERT(r, 0.0f == tables.blue()[0]);
     REPORTER_ASSERT(r, 1.0f == tables.red()[tables.fRed.fCount - 1]);
     REPORTER_ASSERT(r, 1.0f == tables.green()[tables.fGreen.fCount - 1]);
     REPORTER_ASSERT(r, 1.0f == tables.blue()[tables.fBlue.fCount - 1]);
 }

 class ICCTest {
 public:
     static sk_sp<SkICC> MakeICC(sk_sp<SkColorSpace> space) {
         return sk_sp<SkICC>(new SkICC(std::move(space)));
     }
     static sk_sp<SkICC> MakeICC(sk_sp<SkGammas> gammas) {
         return MakeICC(sk_sp<SkColorSpace>(new SkColorSpace_XYZ(
                 kNonStandard_SkGammaNamed, std::move(gammas),
                 SkMatrix44(SkMatrix44::kIdentity_Constructor), nullptr)));
     }
 };

 DEF_TEST(ICC_RawTransferFns, r) {
     sk_sp<SkICC> srgb = ICCTest::MakeICC(SkColorSpace::MakeSRGB());
     test_raw_transfer_fn(r, srgb.get());

     sk_sp<SkICC> adobe =
             ICCTest::MakeICC(SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named));
     test_raw_transfer_fn(r, adobe.get());

     // Lookup-table based gamma curves
     constexpr size_t tableSize = 10;
     void* memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(float) * tableSize);
     sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new (memory) SkGammas(3));
     for (int i = 0; i < 3; ++i) {
         gammas->fType[i] = SkGammas::Type::kTable_Type;
         gammas->fData[i].fTable.fSize = tableSize;
         gammas->fData[i].fTable.fOffset = 0;
     }

     float* table = SkTAddOffset<float>(memory, sizeof(SkGammas));
     table[0] = 0.00f;
     table[1] = 0.05f;
     table[2] = 0.10f;
     table[3] = 0.15f;
     table[4] = 0.25f;
     table[5] = 0.35f;
     table[6] = 0.45f;
     table[7] = 0.60f;
     table[8] = 0.75f;
     table[9] = 1.00f;
     sk_sp<SkICC> tbl = ICCTest::MakeICC(gammas);
     test_raw_transfer_fn(r, tbl.get());

     // Parametric gamma curves
     memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(SkColorSpaceTransferFn));
     gammas = sk_sp<SkGammas>(new (memory) SkGammas(3));
     for (int i = 0; i < 3; ++i) {
         gammas->fType[i] = SkGammas::Type::kParam_Type;
         gammas->fData[i].fParamOffset = 0;
     }

     SkColorSpaceTransferFn* params = SkTAddOffset<SkColorSpaceTransferFn>
             (memory, sizeof(SkGammas));

     // Interval.
     params->fD = 0.04045f;

     // First equation:
     params->fC = 1.0f / 12.92f;
     params->fF = 0.0f;

     // Second equation:
     // Note that the function is continuous (it's actually sRGB).
     params->fA = 1.0f / 1.055f;
     params->fB = 0.055f / 1.055f;
     params->fE = 0.0f;
     params->fG = 2.4f;
     sk_sp<SkICC> param = ICCTest::MakeICC(gammas);
     test_raw_transfer_fn(r, param.get());

     // Exponential gamma curves
     gammas = sk_sp<SkGammas>(new SkGammas(3));
     for (int i = 0; i < 3; ++i) {
         gammas->fType[i] = SkGammas::Type::kValue_Type;
         gammas->fData[i].fValue = 1.4f;
     }
     sk_sp<SkICC> exp = ICCTest::MakeICC(gammas);
     test_raw_transfer_fn(r, exp.get());

     gammas = sk_sp<SkGammas>(new SkGammas(3));
     gammas->fType[0] = gammas->fType[1] = gammas->fType[2] = SkGammas::Type::kNamed_Type;
     gammas->fData[0].fNamed = kSRGB_SkGammaNamed;
     gammas->fData[1].fNamed = k2Dot2Curve_SkGammaNamed;
     gammas->fData[2].fNamed = kLinear_SkGammaNamed;
     sk_sp<SkICC> named = ICCTest::MakeICC(gammas);
     test_raw_transfer_fn(r, named.get());

     memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(float) * tableSize +
                                    sizeof(SkColorSpaceTransferFn));
     gammas = sk_sp<SkGammas>(new (memory) SkGammas(3));

     table = SkTAddOffset<float>(memory, sizeof(SkGammas));
     table[0] = 0.00f;
     table[1] = 0.15f;
     table[2] = 0.20f;
     table[3] = 0.25f;
     table[4] = 0.35f;
     table[5] = 0.45f;
     table[6] = 0.55f;
     table[7] = 0.70f;
     table[8] = 0.85f;
     table[9] = 1.00f;

     params = SkTAddOffset<SkColorSpaceTransferFn>(memory,
             sizeof(SkGammas) + sizeof(float) * tableSize);
     params->fA = 1.0f / 1.055f;
     params->fB = 0.055f / 1.055f;
     params->fC = 1.0f / 12.92f;
     params->fD = 0.04045f;
     params->fE = 0.0f;
     params->fF = 0.0f;
     params->fG = 2.4f;

     gammas->fType[0] = SkGammas::Type::kValue_Type;
     gammas->fData[0].fValue = 1.2f;

     gammas->fType[1] = SkGammas::Type::kTable_Type;
     gammas->fData[1].fTable.fSize = tableSize;
     gammas->fData[1].fTable.fOffset = 0;

     gammas->fType[2] = SkGammas::Type::kParam_Type;
     gammas->fData[2].fParamOffset = sizeof(float) * tableSize;
     sk_sp<SkICC> nonstd = ICCTest::MakeICC(gammas);
     test_raw_transfer_fn(r, nonstd.get());

     // Reverse order of table and exponent
     gammas->fType[1] = SkGammas::Type::kValue_Type;
     gammas->fData[1].fValue = 1.2f;

     gammas->fType[0] = SkGammas::Type::kTable_Type;
     gammas->fData[0].fTable.fSize = tableSize;
     gammas->fData[0].fTable.fOffset = 0;
     sk_sp<SkICC> nonstd2 = ICCTest::MakeICC(gammas);
     test_raw_transfer_fn(r, nonstd2.get());
 }
	/*
	* Copyright 2016 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "Resources.h"
	#include "SkColorSpace.h"
	#include "SkColorSpacePriv.h"
	#include "SkColorSpace_XYZ.h"
	#include "SkData.h"
	#include "SkICC.h"
	#include "SkICCPriv.h"
	#include "SkMatrix44.h"
	#include "SkStream.h"
	#include "Test.h"

	static bool almost_equal(float a, float b) {
	return SkTAbs(a - b) < 0.001f;
	}

	static inline void test_to_xyz_d50(skiatest::Reporter* r, SkICC* icc, bool shouldSucceed,
	const float* reference) {
	SkMatrix44 result(SkMatrix44::kUninitialized_Constructor);
	REPORTER_ASSERT(r, shouldSucceed == icc->toXYZD50(&result));
	if (shouldSucceed) {
	float resultVals[16];
	result.asColMajorf(resultVals);
	for (int i = 0; i < 16; i++) {
	REPORTER_ASSERT(r, almost_equal(resultVals[i], reference[i]));
	}
	}
	}

	DEF_TEST(ICC_ToXYZD50, r) {
	const float z30Reference[16] = {
	0.59825f, 0.27103f, 0.00603f, 0.0f, 0.22243f, 0.67447f, 0.07368f, 0.0f, 0.14352f, 0.05449f,
	0.74519f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f,
	};

	sk_sp<SkData> data = SkData::MakeFromFileName(
	GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
	sk_sp<SkICC> z30 = SkICC::Make(data->data(), data->size());
	test_to_xyz_d50(r, z30.get(), true, z30Reference);

	const float z32Reference[16] = {
	0.61583f, 0.28789f, 0.00513f, 0.0f, 0.20428f, 0.66972f, 0.06609f, 0.0f, 0.14409f, 0.04237f,
	0.75368f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f,
	};

	data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
	sk_sp<SkICC> z32 = SkICC::Make(data->data(), data->size());
	test_to_xyz_d50(r, z32.get(), true, z32Reference);

	data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
	sk_sp<SkICC> upperLeft = SkICC::Make(data->data(), data->size());
	test_to_xyz_d50(r, upperLeft.get(), false, z32Reference);

	data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
	sk_sp<SkICC> upperRight = SkICC::Make(data->data(), data->size());
	test_to_xyz_d50(r, upperRight.get(), false, z32Reference);
	}

	static inline void test_is_numerical_transfer_fn(skiatest::Reporter* r, SkICC* icc,
	bool shouldSucceed,
	const SkColorSpaceTransferFn& reference) {
	SkColorSpaceTransferFn result;
	REPORTER_ASSERT(r, shouldSucceed == icc->isNumericalTransferFn(&result));
	if (shouldSucceed) {
	REPORTER_ASSERT(r, 0 == memcmp(&result, &reference, sizeof(SkColorSpaceTransferFn)));
	}
	}

	DEF_TEST(ICC_IsNumericalTransferFn, r) {
	SkColorSpaceTransferFn referenceFn;
	referenceFn.fA = 1.0f;
	referenceFn.fB = 0.0f;
	referenceFn.fC = 0.0f;
	referenceFn.fD = 0.0f;
	referenceFn.fE = 0.0f;
	referenceFn.fF = 0.0f;
	referenceFn.fG = 2.2f;

	sk_sp<SkData> data = SkData::MakeFromFileName(
	GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
	sk_sp<SkICC> z30 = SkICC::Make(data->data(), data->size());
	test_is_numerical_transfer_fn(r, z30.get(), true, referenceFn);

	data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
	sk_sp<SkICC> z32 = SkICC::Make(data->data(), data->size());
	test_is_numerical_transfer_fn(r, z32.get(), true, referenceFn);

	data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
	sk_sp<SkICC> upperLeft = SkICC::Make(data->data(), data->size());
	test_is_numerical_transfer_fn(r, upperLeft.get(), false, referenceFn);

	data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
	sk_sp<SkICC> upperRight = SkICC::Make(data->data(), data->size());
	test_is_numerical_transfer_fn(r, upperRight.get(), false, referenceFn);
	}

	static inline void test_write_icc(skiatest::Reporter* r, const SkColorSpaceTransferFn& fn,
	const SkMatrix44& toXYZD50, SkColorSpace* reference,
	bool writeToFile) {
	sk_sp<SkData> profile = SkICC::WriteToICC(fn, toXYZD50);
	if (writeToFile) {
	SkFILEWStream stream("out.icc");
	stream.write(profile->data(), profile->size());
	}

	sk_sp<SkColorSpace> colorSpace = SkColorSpace::MakeICC(profile->data(), profile->size());
	REPORTER_ASSERT(r, SkColorSpace::Equals(reference, colorSpace.get()));
	}

	DEF_TEST(ICC_WriteICC, r) {
	SkColorSpaceTransferFn adobeFn;
	adobeFn.fA = 1.0f;
	adobeFn.fB = 0.0f;
	adobeFn.fC = 0.0f;
	adobeFn.fD = 0.0f;
	adobeFn.fE = 0.0f;
	adobeFn.fF = 0.0f;
	adobeFn.fG = 2.2f;
	SkMatrix44 adobeMatrix(SkMatrix44::kUninitialized_Constructor);
	adobeMatrix.set3x3RowMajorf(gAdobeRGB_toXYZD50);
	test_write_icc(r, adobeFn, adobeMatrix,
	SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named).get(), false);

	SkColorSpaceTransferFn srgbFn;
	srgbFn.fA = 1.0f / 1.055f;
	srgbFn.fB = 0.055f / 1.055f;
	srgbFn.fC = 1.0f / 12.92f;
	srgbFn.fD = 0.04045f;
	srgbFn.fE = 0.0f;
	srgbFn.fF = 0.0f;
	srgbFn.fG = 2.4f;
	SkMatrix44 srgbMatrix(SkMatrix44::kUninitialized_Constructor);
	srgbMatrix.set3x3RowMajorf(gSRGB_toXYZD50);
	test_write_icc(r, srgbFn, srgbMatrix, SkColorSpace::MakeSRGB().get(),
	false);

	SkString adobeTag = SkICCGetColorProfileTag(adobeFn, adobeMatrix);
	SkString srgbTag = SkICCGetColorProfileTag(srgbFn, srgbMatrix);
	REPORTER_ASSERT(r, adobeTag != srgbTag);
	REPORTER_ASSERT(r, srgbTag.equals("sRGB"));
	REPORTER_ASSERT(r, adobeTag.equals("AdobeRGB"));
	}

	static inline void test_raw_transfer_fn(skiatest::Reporter* r, SkICC* icc) {
	SkICC::Tables tables;
	bool result = icc->rawTransferFnData(&tables);
	REPORTER_ASSERT(r, result);

	REPORTER_ASSERT(r, 0.0f == tables.red()[0]);
	REPORTER_ASSERT(r, 0.0f == tables.green()[0]);
	REPORTER_ASSERT(r, 0.0f == tables.blue()[0]);
	REPORTER_ASSERT(r, 1.0f == tables.red()[tables.fRed.fCount - 1]);
	REPORTER_ASSERT(r, 1.0f == tables.green()[tables.fGreen.fCount - 1]);
	REPORTER_ASSERT(r, 1.0f == tables.blue()[tables.fBlue.fCount - 1]);
	}

	class ICCTest {
	public:
	static sk_sp<SkICC> MakeICC(sk_sp<SkColorSpace> space) {
	return sk_sp<SkICC>(new SkICC(std::move(space)));
	}
	static sk_sp<SkICC> MakeICC(sk_sp<SkGammas> gammas) {
	return MakeICC(sk_sp<SkColorSpace>(new SkColorSpace_XYZ(
	kNonStandard_SkGammaNamed, std::move(gammas),
	SkMatrix44(SkMatrix44::kIdentity_Constructor), nullptr)));
	}
	};

	DEF_TEST(ICC_RawTransferFns, r) {
	sk_sp<SkICC> srgb = ICCTest::MakeICC(SkColorSpace::MakeSRGB());
	test_raw_transfer_fn(r, srgb.get());

	sk_sp<SkICC> adobe =
	ICCTest::MakeICC(SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named));
	test_raw_transfer_fn(r, adobe.get());

	// Lookup-table based gamma curves
	constexpr size_t tableSize = 10;
	void* memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(float) * tableSize);
	sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new (memory) SkGammas(3));
	for (int i = 0; i < 3; ++i) {
	gammas->fType[i] = SkGammas::Type::kTable_Type;
	gammas->fData[i].fTable.fSize = tableSize;
	gammas->fData[i].fTable.fOffset = 0;
	}

	float* table = SkTAddOffset<float>(memory, sizeof(SkGammas));
	table[0] = 0.00f;
	table[1] = 0.05f;
	table[2] = 0.10f;
	table[3] = 0.15f;
	table[4] = 0.25f;
	table[5] = 0.35f;
	table[6] = 0.45f;
	table[7] = 0.60f;
	table[8] = 0.75f;
	table[9] = 1.00f;
	sk_sp<SkICC> tbl = ICCTest::MakeICC(gammas);
	test_raw_transfer_fn(r, tbl.get());

	// Parametric gamma curves
	memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(SkColorSpaceTransferFn));
	gammas = sk_sp<SkGammas>(new (memory) SkGammas(3));
	for (int i = 0; i < 3; ++i) {
	gammas->fType[i] = SkGammas::Type::kParam_Type;
	gammas->fData[i].fParamOffset = 0;
	}

	SkColorSpaceTransferFn* params = SkTAddOffset<SkColorSpaceTransferFn>
	(memory, sizeof(SkGammas));

	// Interval.
	params->fD = 0.04045f;

	// First equation:
	params->fC = 1.0f / 12.92f;
	params->fF = 0.0f;

	// Second equation:
	// Note that the function is continuous (it's actually sRGB).
	params->fA = 1.0f / 1.055f;
	params->fB = 0.055f / 1.055f;
	params->fE = 0.0f;
	params->fG = 2.4f;
	sk_sp<SkICC> param = ICCTest::MakeICC(gammas);
	test_raw_transfer_fn(r, param.get());

	// Exponential gamma curves
	gammas = sk_sp<SkGammas>(new SkGammas(3));
	for (int i = 0; i < 3; ++i) {
	gammas->fType[i] = SkGammas::Type::kValue_Type;
	gammas->fData[i].fValue = 1.4f;
	}
	sk_sp<SkICC> exp = ICCTest::MakeICC(gammas);
	test_raw_transfer_fn(r, exp.get());

	gammas = sk_sp<SkGammas>(new SkGammas(3));
	gammas->fType[0] = gammas->fType[1] = gammas->fType[2] = SkGammas::Type::kNamed_Type;
	gammas->fData[0].fNamed = kSRGB_SkGammaNamed;
	gammas->fData[1].fNamed = k2Dot2Curve_SkGammaNamed;
	gammas->fData[2].fNamed = kLinear_SkGammaNamed;
	sk_sp<SkICC> named = ICCTest::MakeICC(gammas);
	test_raw_transfer_fn(r, named.get());

	memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(float) * tableSize +
	sizeof(SkColorSpaceTransferFn));
	gammas = sk_sp<SkGammas>(new (memory) SkGammas(3));

	table = SkTAddOffset<float>(memory, sizeof(SkGammas));
	table[0] = 0.00f;
	table[1] = 0.15f;
	table[2] = 0.20f;
	table[3] = 0.25f;
	table[4] = 0.35f;
	table[5] = 0.45f;
	table[6] = 0.55f;
	table[7] = 0.70f;
	table[8] = 0.85f;
	table[9] = 1.00f;

	params = SkTAddOffset<SkColorSpaceTransferFn>(memory,
	sizeof(SkGammas) + sizeof(float) * tableSize);
	params->fA = 1.0f / 1.055f;
	params->fB = 0.055f / 1.055f;
	params->fC = 1.0f / 12.92f;
	params->fD = 0.04045f;
	params->fE = 0.0f;
	params->fF = 0.0f;
	params->fG = 2.4f;

	gammas->fType[0] = SkGammas::Type::kValue_Type;
	gammas->fData[0].fValue = 1.2f;

	gammas->fType[1] = SkGammas::Type::kTable_Type;
	gammas->fData[1].fTable.fSize = tableSize;
	gammas->fData[1].fTable.fOffset = 0;

	gammas->fType[2] = SkGammas::Type::kParam_Type;
	gammas->fData[2].fParamOffset = sizeof(float) * tableSize;
	sk_sp<SkICC> nonstd = ICCTest::MakeICC(gammas);
	test_raw_transfer_fn(r, nonstd.get());

	// Reverse order of table and exponent
	gammas->fType[1] = SkGammas::Type::kValue_Type;
	gammas->fData[1].fValue = 1.2f;

	gammas->fType[0] = SkGammas::Type::kTable_Type;
	gammas->fData[0].fTable.fSize = tableSize;
	gammas->fData[0].fTable.fOffset = 0;
	sk_sp<SkICC> nonstd2 = ICCTest::MakeICC(gammas);
	test_raw_transfer_fn(r, nonstd2.get());
	}