From 6f67fc29eddfb6f415f7e6a86197db5d8c8539ed Mon Sep 17 00:00:00 2001 From: Matt Sarett Date: Thu, 26 Jan 2017 13:10:49 -0500 Subject: Add SkICC::rawTransferFnData() BUG=skia: Change-Id: I912b044a0091a4d396c954d1ad1d84f5f8d50f56 Reviewed-on: https://skia-review.googlesource.com/7366 Reviewed-by: Mike Reed Commit-Queue: Matt Sarett --- tests/ICCTest.cpp | 151 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) (limited to 'tests/ICCTest.cpp') diff --git a/tests/ICCTest.cpp b/tests/ICCTest.cpp index 4bc296d140..794483c682 100644 --- a/tests/ICCTest.cpp +++ b/tests/ICCTest.cpp @@ -8,6 +8,7 @@ #include "Resources.h" #include "SkColorSpace.h" #include "SkColorSpacePriv.h" +#include "SkColorSpace_XYZ.h" #include "SkData.h" #include "SkICC.h" #include "SkMatrix44.h" @@ -138,3 +139,153 @@ DEF_TEST(ICC_WriteICC, r) { test_write_icc(r, srgbFn, srgbMatrix, SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named).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 MakeICC(sk_sp space) { + return sk_sp(new SkICC(std::move(space))); + } + static sk_sp MakeICC(sk_sp gammas) { + return MakeICC(sk_sp(new SkColorSpace_XYZ( + kNonStandard_SkGammaNamed, std::move(gammas), + SkMatrix44(SkMatrix44::kIdentity_Constructor), nullptr))); + } +}; + +DEF_TEST(ICC_RawTransferFns, r) { + sk_sp srgb = ICCTest::MakeICC(SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named)); + test_raw_transfer_fn(r, srgb.get()); + + sk_sp adobe = + ICCTest::MakeICC(SkColorSpace::MakeNamed(SkColorSpace::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 gammas = sk_sp(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(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 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(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 + (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 param = ICCTest::MakeICC(gammas); + test_raw_transfer_fn(r, param.get()); + + // Exponential gamma curves + gammas = sk_sp(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 exp = ICCTest::MakeICC(gammas); + test_raw_transfer_fn(r, exp.get()); + + gammas = sk_sp(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 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(new (memory) SkGammas(3)); + + table = SkTAddOffset(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(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 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 nonstd2 = ICCTest::MakeICC(gammas); + test_raw_transfer_fn(r, nonstd2.get()); +} -- cgit v1.2.3