| /* |
| * 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 "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); |
| } |
| |
| 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()); |
| } |