| /* |
| * 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 "SkColorPriv.h" |
| #include "SkColorSpace_A2B.h" |
| #include "SkColorSpace_Base.h" |
| #include "SkColorSpace_XYZ.h" |
| #include "SkColorSpacePriv.h" |
| #include "SkColorSpaceXform_A2B.h" |
| #include "SkColorSpaceXform_Base.h" |
| #include "SkColorSpaceXformPriv.h" |
| #include "SkHalf.h" |
| #include "SkOpts.h" |
| #include "SkPM4fPriv.h" |
| #include "SkRasterPipeline.h" |
| #include "SkSRGB.h" |
| |
| static constexpr float sk_linear_from_2dot2[256] = { |
| 0.000000000000000000f, 0.000005077051900662f, 0.000023328004666099f, 0.000056921765712193f, |
| 0.000107187362341244f, 0.000175123977503027f, 0.000261543754548491f, 0.000367136269815943f, |
| 0.000492503787191433f, 0.000638182842167022f, 0.000804658499513058f, 0.000992374304074325f, |
| 0.001201739522438400f, 0.001433134589671860f, 0.001686915316789280f, 0.001963416213396470f, |
| 0.002262953160706430f, 0.002585825596234170f, 0.002932318323938360f, 0.003302703032003640f, |
| 0.003697239578900130f, 0.004116177093282750f, 0.004559754922526020f, 0.005028203456855540f, |
| 0.005521744850239660f, 0.006040593654849810f, 0.006584957382581690f, 0.007155037004573030f, |
| 0.007751027397660610f, 0.008373117745148580f, 0.009021491898012130f, 0.009696328701658230f, |
| 0.010397802292555300f, 0.011126082368383200f, 0.011881334434813700f, 0.012663720031582100f, |
| 0.013473396940142600f, 0.014310519374884100f, 0.015175238159625200f, 0.016067700890886900f, |
| 0.016988052089250000f, 0.017936433339950200f, 0.018912983423721500f, 0.019917838438785700f, |
| 0.020951131914781100f, 0.022012994919336500f, 0.023103556157921400f, 0.024222942067534200f, |
| 0.025371276904734600f, 0.026548682828472900f, 0.027755279978126000f, 0.028991186547107800f, |
| 0.030256518852388700f, 0.031551391400226400f, 0.032875916948383800f, 0.034230206565082000f, |
| 0.035614369684918800f, 0.037028514161960200f, 0.038472746320194600f, 0.039947171001525600f, |
| 0.041451891611462500f, 0.042987010162657100f, 0.044552627316421400f, 0.046148842422351000f, |
| 0.047775753556170600f, 0.049433457555908000f, 0.051122050056493400f, 0.052841625522879000f, |
| 0.054592277281760300f, 0.056374097551979800f, 0.058187177473685400f, 0.060031607136313200f, |
| 0.061907475605455800f, 0.063814870948677200f, 0.065753880260330100f, 0.067724589685424300f, |
| 0.069727084442598800f, 0.071761448846239100f, 0.073827766327784600f, 0.075926119456264800f, |
| 0.078056589958101900f, 0.080219258736215100f, 0.082414205888459200f, 0.084641510725429500f, |
| 0.086901251787660300f, 0.089193506862247800f, 0.091518352998919500f, 0.093875866525577800f, |
| 0.096266123063339700f, 0.098689197541094500f, 0.101145164209600000f, 0.103634096655137000f, |
| 0.106156067812744000f, 0.108711149979039000f, 0.111299414824660000f, 0.113920933406333000f, |
| 0.116575776178572000f, 0.119264013005047000f, 0.121985713169619000f, 0.124740945387051000f, |
| 0.127529777813422000f, 0.130352278056244000f, 0.133208513184300000f, 0.136098549737202000f, |
| 0.139022453734703000f, 0.141980290685736000f, 0.144972125597231000f, 0.147998022982685000f, |
| 0.151058046870511000f, 0.154152260812165000f, 0.157280727890073000f, 0.160443510725344000f, |
| 0.163640671485290000f, 0.166872271890766000f, 0.170138373223312000f, 0.173439036332135000f, |
| 0.176774321640903000f, 0.180144289154390000f, 0.183548998464951000f, 0.186988508758844000f, |
| 0.190462878822409000f, 0.193972167048093000f, 0.197516431440340000f, 0.201095729621346000f, |
| 0.204710118836677000f, 0.208359655960767000f, 0.212044397502288000f, 0.215764399609395000f, |
| 0.219519718074868000f, 0.223310408341127000f, 0.227136525505149000f, 0.230998124323267000f, |
| 0.234895259215880000f, 0.238827984272048000f, 0.242796353254002000f, 0.246800419601550000f, |
| 0.250840236436400000f, 0.254915856566385000f, 0.259027332489606000f, 0.263174716398492000f, |
| 0.267358060183772000f, 0.271577415438375000f, 0.275832833461245000f, 0.280124365261085000f, |
| 0.284452061560024000f, 0.288815972797219000f, 0.293216149132375000f, 0.297652640449211000f, |
| 0.302125496358853000f, 0.306634766203158000f, 0.311180499057984000f, 0.315762743736397000f, |
| 0.320381548791810000f, 0.325036962521076000f, 0.329729032967515000f, 0.334457807923889000f, |
| 0.339223334935327000f, 0.344025661302187000f, 0.348864834082879000f, 0.353740900096629000f, |
| 0.358653905926199000f, 0.363603897920553000f, 0.368590922197487000f, 0.373615024646202000f, |
| 0.378676250929840000f, 0.383774646487975000f, 0.388910256539059000f, 0.394083126082829000f, |
| 0.399293299902674000f, 0.404540822567962000f, 0.409825738436323000f, 0.415148091655907000f, |
| 0.420507926167587000f, 0.425905285707146000f, 0.431340213807410000f, 0.436812753800359000f, |
| 0.442322948819202000f, 0.447870841800410000f, 0.453456475485731000f, 0.459079892424160000f, |
| 0.464741134973889000f, 0.470440245304218000f, 0.476177265397440000f, 0.481952237050698000f, |
| 0.487765201877811000f, 0.493616201311074000f, 0.499505276603030000f, 0.505432468828216000f, |
| 0.511397818884880000f, 0.517401367496673000f, 0.523443155214325000f, 0.529523222417277000f, |
| 0.535641609315311000f, 0.541798355950137000f, 0.547993502196972000f, 0.554227087766085000f, |
| 0.560499152204328000f, 0.566809734896638000f, 0.573158875067523000f, 0.579546611782525000f, |
| 0.585972983949661000f, 0.592438030320847000f, 0.598941789493296000f, 0.605484299910907000f, |
| 0.612065599865624000f, 0.618685727498780000f, 0.625344720802427000f, 0.632042617620641000f, |
| 0.638779455650817000f, 0.645555272444935000f, 0.652370105410821000f, 0.659223991813387000f, |
| 0.666116968775851000f, 0.673049073280942000f, 0.680020342172095000f, 0.687030812154625000f, |
| 0.694080519796882000f, 0.701169501531402000f, 0.708297793656032000f, 0.715465432335048000f, |
| 0.722672453600255000f, 0.729918893352071000f, 0.737204787360605000f, 0.744530171266715000f, |
| 0.751895080583051000f, 0.759299550695091000f, 0.766743616862161000f, 0.774227314218442000f, |
| 0.781750677773962000f, 0.789313742415586000f, 0.796916542907978000f, 0.804559113894567000f, |
| 0.812241489898490000f, 0.819963705323528000f, 0.827725794455034000f, 0.835527791460841000f, |
| 0.843369730392169000f, 0.851251645184515000f, 0.859173569658532000f, 0.867135537520905000f, |
| 0.875137582365205000f, 0.883179737672745000f, 0.891262036813419000f, 0.899384513046529000f, |
| 0.907547199521614000f, 0.915750129279253000f, 0.923993335251873000f, 0.932276850264543000f, |
| 0.940600707035753000f, 0.948964938178195000f, 0.957369576199527000f, 0.965814653503130000f, |
| 0.974300202388861000f, 0.982826255053791000f, 0.991392843592940000f, 1.000000000000000000f, |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static void build_table_linear_from_gamma(float* outTable, float exponent) { |
| for (float x = 0.0f; x <= 1.0f; x += (1.0f/255.0f)) { |
| *outTable++ = powf(x, exponent); |
| } |
| } |
| |
| // outTable is always 256 entries, inTable may be larger or smaller. |
| static void build_table_linear_from_gamma(float* outTable, const float* inTable, |
| int inTableSize) { |
| if (256 == inTableSize) { |
| memcpy(outTable, inTable, sizeof(float) * 256); |
| return; |
| } |
| |
| for (float x = 0.0f; x <= 1.0f; x += (1.0f/255.0f)) { |
| *outTable++ = interp_lut(x, inTable, inTableSize); |
| } |
| } |
| |
| |
| static void build_table_linear_from_gamma(float* outTable, float g, float a, float b, float c, |
| float d, float e, float f) { |
| // Y = (aX + b)^g + e for X >= d |
| // Y = cX + f otherwise |
| for (float x = 0.0f; x <= 1.0f; x += (1.0f/255.0f)) { |
| if (x >= d) { |
| *outTable++ = clamp_0_1(powf(a * x + b, g) + e); |
| } else { |
| *outTable++ = clamp_0_1(c * x + f); |
| } |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static const int kDstGammaTableSize = SkColorSpaceXform_Base::kDstGammaTableSize; |
| |
| static void build_table_linear_to_gamma(uint8_t* outTable, float exponent) { |
| float toGammaExp = 1.0f / exponent; |
| |
| for (int i = 0; i < kDstGammaTableSize; i++) { |
| float x = ((float) i) * (1.0f / ((float) (kDstGammaTableSize - 1))); |
| outTable[i] = clamp_normalized_float_to_byte(powf(x, toGammaExp)); |
| } |
| } |
| |
| static void build_table_linear_to_gamma(uint8_t* outTable, const float* inTable, |
| int inTableSize) { |
| invert_table_gamma(nullptr, outTable, kDstGammaTableSize, inTable, inTableSize); |
| } |
| |
| static float inverse_parametric(float x, float g, float a, float b, float c, float d, float e, |
| float f) { |
| // We need to take the inverse of the following piecewise function. |
| // Y = (aX + b)^g + c for X >= d |
| // Y = eX + f otherwise |
| |
| // Assume that the gamma function is continuous, or this won't make much sense anyway. |
| // Plug in |d| to the first equation to calculate the new piecewise interval. |
| // Then simply use the inverse of the original functions. |
| float interval = c * d + f; |
| if (x < interval) { |
| // X = (Y - F) / C |
| if (0.0f == c) { |
| // The gamma curve for this segment is constant, so the inverse is undefined. |
| // Since this is the lower segment, guess zero. |
| return 0.0f; |
| } |
| |
| return (x - f) / c; |
| } |
| |
| // X = ((Y - E)^(1 / G) - B) / A |
| if (0.0f == a || 0.0f == g) { |
| // The gamma curve for this segment is constant, so the inverse is undefined. |
| // Since this is the upper segment, guess one. |
| return 1.0f; |
| } |
| |
| return (powf(x - e, 1.0f / g) - b) / a; |
| } |
| |
| static void build_table_linear_to_gamma(uint8_t* outTable, float g, float a, |
| float b, float c, float d, float e, float f) { |
| for (int i = 0; i < kDstGammaTableSize; i++) { |
| float x = ((float) i) * (1.0f / ((float) (kDstGammaTableSize - 1))); |
| float y = inverse_parametric(x, g, a, b, c, d, e, f); |
| outTable[i] = clamp_normalized_float_to_byte(y); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> |
| struct GammaFns { |
| const T* fSRGBTable; |
| const T* f2Dot2Table; |
| void (*fBuildFromValue)(T*, float); |
| void (*fBuildFromTable)(T*, const float*, int); |
| void (*fBuildFromParam)(T*, float, float, float, float, float, float, float); |
| }; |
| |
| static const GammaFns<float> kToLinear { |
| sk_linear_from_srgb, |
| sk_linear_from_2dot2, |
| &build_table_linear_from_gamma, |
| &build_table_linear_from_gamma, |
| &build_table_linear_from_gamma, |
| }; |
| |
| static const GammaFns<uint8_t> kFromLinear { |
| nullptr, |
| nullptr, |
| &build_table_linear_to_gamma, |
| &build_table_linear_to_gamma, |
| &build_table_linear_to_gamma, |
| }; |
| |
| // Build tables to transform src gamma to linear. |
| template <typename T> |
| static void build_gamma_tables(const T* outGammaTables[3], T* gammaTableStorage, int gammaTableSize, |
| const SkColorSpace_XYZ* space, const GammaFns<T>& fns, |
| bool gammasAreMatching) |
| { |
| switch (space->gammaNamed()) { |
| case kSRGB_SkGammaNamed: |
| outGammaTables[0] = outGammaTables[1] = outGammaTables[2] = fns.fSRGBTable; |
| break; |
| case k2Dot2Curve_SkGammaNamed: |
| outGammaTables[0] = outGammaTables[1] = outGammaTables[2] = fns.f2Dot2Table; |
| break; |
| case kLinear_SkGammaNamed: |
| outGammaTables[0] = outGammaTables[1] = outGammaTables[2] = nullptr; |
| break; |
| default: { |
| const SkGammas* gammas = space->gammas(); |
| SkASSERT(gammas); |
| |
| auto build_table = [=](int i) { |
| if (gammas->isNamed(i)) { |
| switch (gammas->data(i).fNamed) { |
| case kSRGB_SkGammaNamed: |
| (*fns.fBuildFromParam)(&gammaTableStorage[i * gammaTableSize], 2.4f, |
| (1.0f / 1.055f), (0.055f / 1.055f), |
| (1.0f / 12.92f), 0.04045f, 0.0f, 0.0f); |
| outGammaTables[i] = &gammaTableStorage[i * gammaTableSize]; |
| break; |
| case k2Dot2Curve_SkGammaNamed: |
| (*fns.fBuildFromValue)(&gammaTableStorage[i * gammaTableSize], 2.2f); |
| outGammaTables[i] = &gammaTableStorage[i * gammaTableSize]; |
| break; |
| case kLinear_SkGammaNamed: |
| (*fns.fBuildFromValue)(&gammaTableStorage[i * gammaTableSize], 1.0f); |
| outGammaTables[i] = &gammaTableStorage[i * gammaTableSize]; |
| break; |
| default: |
| SkASSERT(false); |
| break; |
| } |
| } else if (gammas->isValue(i)) { |
| (*fns.fBuildFromValue)(&gammaTableStorage[i * gammaTableSize], |
| gammas->data(i).fValue); |
| outGammaTables[i] = &gammaTableStorage[i * gammaTableSize]; |
| } else if (gammas->isTable(i)) { |
| (*fns.fBuildFromTable)(&gammaTableStorage[i * gammaTableSize], gammas->table(i), |
| gammas->data(i).fTable.fSize); |
| outGammaTables[i] = &gammaTableStorage[i * gammaTableSize]; |
| } else { |
| SkASSERT(gammas->isParametric(i)); |
| const SkColorSpaceTransferFn& params = gammas->params(i); |
| (*fns.fBuildFromParam)(&gammaTableStorage[i * gammaTableSize], params.fG, |
| params.fA, params.fB, params.fC, params.fD, params.fE, |
| params.fF); |
| outGammaTables[i] = &gammaTableStorage[i * gammaTableSize]; |
| } |
| }; |
| |
| if (gammasAreMatching) { |
| build_table(0); |
| outGammaTables[1] = outGammaTables[0]; |
| outGammaTables[2] = outGammaTables[0]; |
| } else { |
| build_table(0); |
| build_table(1); |
| build_table(2); |
| } |
| |
| break; |
| } |
| } |
| } |
| |
| void SkColorSpaceXform_Base::BuildDstGammaTables(const uint8_t* dstGammaTables[3], |
| uint8_t* dstStorage, |
| const SkColorSpace_XYZ* space, |
| bool gammasAreMatching) { |
| build_gamma_tables(dstGammaTables, dstStorage, kDstGammaTableSize, space, kFromLinear, |
| gammasAreMatching); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| std::unique_ptr<SkColorSpaceXform> SkColorSpaceXform::New(SkColorSpace* srcSpace, |
| SkColorSpace* dstSpace) { |
| if (!srcSpace || !dstSpace) { |
| // Invalid input |
| return nullptr; |
| } |
| |
| if (SkColorSpace_Base::Type::kA2B == as_CSB(dstSpace)->type()) { |
| SkCSXformPrintf("A2B destinations not supported\n"); |
| return nullptr; |
| } |
| |
| if (SkColorSpace_Base::Type::kA2B == as_CSB(srcSpace)->type()) { |
| SkColorSpace_A2B* src = static_cast<SkColorSpace_A2B*>(srcSpace); |
| SkColorSpace_XYZ* dst = static_cast<SkColorSpace_XYZ*>(dstSpace); |
| return std::unique_ptr<SkColorSpaceXform>(new SkColorSpaceXform_A2B(src, dst)); |
| } |
| SkColorSpace_XYZ* srcSpaceXYZ = static_cast<SkColorSpace_XYZ*>(srcSpace); |
| SkColorSpace_XYZ* dstSpaceXYZ = static_cast<SkColorSpace_XYZ*>(dstSpace); |
| |
| ColorSpaceMatch csm = kNone_ColorSpaceMatch; |
| SkMatrix44 srcToDst(SkMatrix44::kUninitialized_Constructor); |
| if (SkColorSpace::Equals(srcSpace, dstSpace)) { |
| srcToDst.setIdentity(); |
| csm = kFull_ColorSpaceMatch; |
| } else { |
| if (srcSpaceXYZ->toXYZD50Hash() == dstSpaceXYZ->toXYZD50Hash()) { |
| SkASSERT(*srcSpaceXYZ->toXYZD50() == *dstSpaceXYZ->toXYZD50() && "Hash collision"); |
| srcToDst.setIdentity(); |
| csm = kGamut_ColorSpaceMatch; |
| } else { |
| srcToDst.setConcat(*dstSpaceXYZ->fromXYZD50(), *srcSpaceXYZ->toXYZD50()); |
| } |
| } |
| |
| switch (csm) { |
| case kNone_ColorSpaceMatch: |
| return std::unique_ptr<SkColorSpaceXform>(new SkColorSpaceXform_XYZ |
| <kNone_ColorSpaceMatch>(srcSpaceXYZ, srcToDst, dstSpaceXYZ)); |
| case kGamut_ColorSpaceMatch: |
| return std::unique_ptr<SkColorSpaceXform>(new SkColorSpaceXform_XYZ |
| <kGamut_ColorSpaceMatch>(srcSpaceXYZ, srcToDst, dstSpaceXYZ)); |
| case kFull_ColorSpaceMatch: |
| return std::unique_ptr<SkColorSpaceXform>(new SkColorSpaceXform_XYZ |
| <kFull_ColorSpaceMatch>(srcSpaceXYZ, srcToDst, dstSpaceXYZ)); |
| default: |
| SkASSERT(false); |
| return nullptr; |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| #define AI SK_ALWAYS_INLINE |
| |
| static AI void load_matrix(const float matrix[13], |
| Sk4f& rXgXbX, Sk4f& rYgYbY, Sk4f& rZgZbZ, Sk4f& rTgTbT) { |
| rXgXbX = Sk4f::Load(matrix + 0); |
| rYgYbY = Sk4f::Load(matrix + 3); |
| rZgZbZ = Sk4f::Load(matrix + 6); |
| rTgTbT = Sk4f::Load(matrix + 9); |
| } |
| |
| enum Order { |
| kRGBA_Order, |
| kBGRA_Order, |
| }; |
| |
| static AI void set_rb_shifts(Order kOrder, int* kRShift, int* kBShift) { |
| if (kRGBA_Order == kOrder) { |
| *kRShift = 0; |
| *kBShift = 16; |
| } else { |
| *kRShift = 16; |
| *kBShift = 0; |
| } |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgb_from_tables(const uint32_t* src, |
| Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const srcTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = { srcTables[0][(src[0] >> kRShift) & 0xFF], |
| srcTables[0][(src[1] >> kRShift) & 0xFF], |
| srcTables[0][(src[2] >> kRShift) & 0xFF], |
| srcTables[0][(src[3] >> kRShift) & 0xFF], }; |
| g = { srcTables[1][(src[0] >> kGShift) & 0xFF], |
| srcTables[1][(src[1] >> kGShift) & 0xFF], |
| srcTables[1][(src[2] >> kGShift) & 0xFF], |
| srcTables[1][(src[3] >> kGShift) & 0xFF], }; |
| b = { srcTables[2][(src[0] >> kBShift) & 0xFF], |
| srcTables[2][(src[1] >> kBShift) & 0xFF], |
| srcTables[2][(src[2] >> kBShift) & 0xFF], |
| srcTables[2][(src[3] >> kBShift) & 0xFF], }; |
| a = 0.0f; // Don't let the compiler complain that |a| is uninitialized. |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgba_from_tables(const uint32_t* src, |
| Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const srcTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = { srcTables[0][(src[0] >> kRShift) & 0xFF], |
| srcTables[0][(src[1] >> kRShift) & 0xFF], |
| srcTables[0][(src[2] >> kRShift) & 0xFF], |
| srcTables[0][(src[3] >> kRShift) & 0xFF], }; |
| g = { srcTables[1][(src[0] >> kGShift) & 0xFF], |
| srcTables[1][(src[1] >> kGShift) & 0xFF], |
| srcTables[1][(src[2] >> kGShift) & 0xFF], |
| srcTables[1][(src[3] >> kGShift) & 0xFF], }; |
| b = { srcTables[2][(src[0] >> kBShift) & 0xFF], |
| srcTables[2][(src[1] >> kBShift) & 0xFF], |
| srcTables[2][(src[2] >> kBShift) & 0xFF], |
| srcTables[2][(src[3] >> kBShift) & 0xFF], }; |
| a = (1.0f / 255.0f) * SkNx_cast<float>(Sk4u::Load(src) >> 24); |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgb_linear(const uint32_t* src, Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = (1.0f / 255.0f) * SkNx_cast<float>((Sk4u::Load(src) >> kRShift) & 0xFF); |
| g = (1.0f / 255.0f) * SkNx_cast<float>((Sk4u::Load(src) >> kGShift) & 0xFF); |
| b = (1.0f / 255.0f) * SkNx_cast<float>((Sk4u::Load(src) >> kBShift) & 0xFF); |
| a = 0.0f; // Don't let the compiler complain that |a| is uninitialized. |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgba_linear(const uint32_t* src, Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = (1.0f / 255.0f) * SkNx_cast<float>((Sk4u::Load(src) >> kRShift) & 0xFF); |
| g = (1.0f / 255.0f) * SkNx_cast<float>((Sk4u::Load(src) >> kGShift) & 0xFF); |
| b = (1.0f / 255.0f) * SkNx_cast<float>((Sk4u::Load(src) >> kBShift) & 0xFF); |
| a = (1.0f / 255.0f) * SkNx_cast<float>((Sk4u::Load(src) >> 24)); |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgb_from_tables_1(const uint32_t* src, |
| Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const srcTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = Sk4f(srcTables[0][(*src >> kRShift) & 0xFF]); |
| g = Sk4f(srcTables[1][(*src >> kGShift) & 0xFF]); |
| b = Sk4f(srcTables[2][(*src >> kBShift) & 0xFF]); |
| a = 0.0f; // Don't let MSAN complain that |a| is uninitialized. |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgba_from_tables_1(const uint32_t* src, |
| Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const srcTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = Sk4f(srcTables[0][(*src >> kRShift) & 0xFF]); |
| g = Sk4f(srcTables[1][(*src >> kGShift) & 0xFF]); |
| b = Sk4f(srcTables[2][(*src >> kBShift) & 0xFF]); |
| a = (1.0f / 255.0f) * Sk4f(*src >> 24); |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgb_linear_1(const uint32_t* src, |
| Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const srcTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = Sk4f((1.0f / 255.0f) * ((*src >> kRShift) & 0xFF)); |
| g = Sk4f((1.0f / 255.0f) * ((*src >> kGShift) & 0xFF)); |
| b = Sk4f((1.0f / 255.0f) * ((*src >> kBShift) & 0xFF)); |
| a = 0.0f; // Don't let MSAN complain that |a| is uninitialized. |
| } |
| |
| template <Order kOrder> |
| static AI void load_rgba_linear_1(const uint32_t* src, |
| Sk4f& r, Sk4f& g, Sk4f& b, Sk4f& a, |
| const float* const srcTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| r = Sk4f((1.0f / 255.0f) * ((*src >> kRShift) & 0xFF)); |
| g = Sk4f((1.0f / 255.0f) * ((*src >> kGShift) & 0xFF)); |
| b = Sk4f((1.0f / 255.0f) * ((*src >> kBShift) & 0xFF)); |
| a = Sk4f((1.0f / 255.0f) * ((*src >> 24))); |
| } |
| |
| static AI void transform_gamut(const Sk4f& r, const Sk4f& g, const Sk4f& b, const Sk4f& a, |
| const Sk4f& rXgXbX, const Sk4f& rYgYbY, const Sk4f& rZgZbZ, |
| Sk4f& dr, Sk4f& dg, Sk4f& db, Sk4f& da) { |
| dr = rXgXbX[0]*r + rYgYbY[0]*g + rZgZbZ[0]*b; |
| dg = rXgXbX[1]*r + rYgYbY[1]*g + rZgZbZ[1]*b; |
| db = rXgXbX[2]*r + rYgYbY[2]*g + rZgZbZ[2]*b; |
| da = a; |
| } |
| |
| static AI void transform_gamut_1(const Sk4f& r, const Sk4f& g, const Sk4f& b, |
| const Sk4f& rXgXbX, const Sk4f& rYgYbY, const Sk4f& rZgZbZ, |
| Sk4f& rgba) { |
| rgba = rXgXbX*r + rYgYbY*g + rZgZbZ*b; |
| } |
| |
| static AI void translate_gamut(const Sk4f& rTgTbT, Sk4f& dr, Sk4f& dg, Sk4f& db) { |
| dr = dr + rTgTbT[0]; |
| dg = dg + rTgTbT[1]; |
| db = db + rTgTbT[2]; |
| } |
| |
| static AI void translate_gamut_1(const Sk4f& rTgTbT, Sk4f& rgba) { |
| rgba = rgba + rTgTbT; |
| } |
| |
| static AI void premultiply(Sk4f& dr, Sk4f& dg, Sk4f& db, const Sk4f& da, bool kClamp) { |
| if (kClamp) { |
| dr = Sk4f::Min(dr, 1.0f); |
| dg = Sk4f::Min(dg, 1.0f); |
| db = Sk4f::Min(db, 1.0f); |
| } |
| |
| dr = da * dr; |
| dg = da * dg; |
| db = da * db; |
| } |
| |
| static AI void premultiply_1(const Sk4f& a, Sk4f& rgba, bool kClamp) { |
| if (kClamp) { |
| rgba = Sk4f::Min(rgba, 1.0f); |
| } |
| |
| rgba = a * rgba; |
| } |
| |
| template <Order kOrder> |
| static AI void store_srgb(void* dst, const uint32_t* src, Sk4f& dr, Sk4f& dg, Sk4f& db, Sk4f&, |
| const uint8_t* const[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| dr = sk_linear_to_srgb_needs_trunc(dr); |
| dg = sk_linear_to_srgb_needs_trunc(dg); |
| db = sk_linear_to_srgb_needs_trunc(db); |
| |
| dr = sk_clamp_0_255(dr); |
| dg = sk_clamp_0_255(dg); |
| db = sk_clamp_0_255(db); |
| |
| Sk4i da = Sk4i::Load(src) & 0xFF000000; |
| |
| Sk4i rgba = (SkNx_cast<int>(dr) << kRShift) |
| | (SkNx_cast<int>(dg) << kGShift) |
| | (SkNx_cast<int>(db) << kBShift) |
| | (da ); |
| rgba.store(dst); |
| } |
| |
| template <Order kOrder> |
| static AI void store_srgb_1(void* dst, const uint32_t* src, |
| Sk4f& rgba, const Sk4f&, |
| const uint8_t* const[3]) { |
| rgba = sk_clamp_0_255(sk_linear_to_srgb_needs_trunc(rgba)); |
| |
| uint32_t tmp; |
| SkNx_cast<uint8_t>(SkNx_cast<int32_t>(rgba)).store(&tmp); |
| tmp = (*src & 0xFF000000) | (tmp & 0x00FFFFFF); |
| if (kBGRA_Order == kOrder) { |
| tmp = SkSwizzle_RB(tmp); |
| } |
| |
| *(uint32_t*)dst = tmp; |
| } |
| |
| static AI Sk4f linear_to_2dot2(const Sk4f& x) { |
| // x^(29/64) is a very good approximation of the true value, x^(1/2.2). |
| auto x2 = x.rsqrt(), // x^(-1/2) |
| x32 = x2.rsqrt().rsqrt().rsqrt().rsqrt(), // x^(-1/32) |
| x64 = x32.rsqrt(); // x^(+1/64) |
| |
| // 29 = 32 - 2 - 1 |
| return 255.0f * x2.invert() * x32 * x64.invert(); |
| } |
| |
| template <Order kOrder> |
| static AI void store_2dot2(void* dst, const uint32_t* src, Sk4f& dr, Sk4f& dg, Sk4f& db, Sk4f&, |
| const uint8_t* const[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| dr = linear_to_2dot2(dr); |
| dg = linear_to_2dot2(dg); |
| db = linear_to_2dot2(db); |
| |
| dr = sk_clamp_0_255(dr); |
| dg = sk_clamp_0_255(dg); |
| db = sk_clamp_0_255(db); |
| |
| Sk4i da = Sk4i::Load(src) & 0xFF000000; |
| |
| Sk4i rgba = (Sk4f_round(dr) << kRShift) |
| | (Sk4f_round(dg) << kGShift) |
| | (Sk4f_round(db) << kBShift) |
| | (da ); |
| rgba.store(dst); |
| } |
| |
| template <Order kOrder> |
| static AI void store_2dot2_1(void* dst, const uint32_t* src, |
| Sk4f& rgba, const Sk4f&, |
| const uint8_t* const[3]) { |
| rgba = sk_clamp_0_255(linear_to_2dot2(rgba)); |
| |
| uint32_t tmp; |
| SkNx_cast<uint8_t>(Sk4f_round(rgba)).store(&tmp); |
| tmp = (*src & 0xFF000000) | (tmp & 0x00FFFFFF); |
| if (kBGRA_Order == kOrder) { |
| tmp = SkSwizzle_RB(tmp); |
| } |
| |
| *(uint32_t*)dst = tmp; |
| } |
| |
| template <Order kOrder> |
| static AI void store_linear(void* dst, const uint32_t* src, Sk4f& dr, Sk4f& dg, Sk4f& db, Sk4f&, |
| const uint8_t* const[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| dr = sk_clamp_0_255(255.0f * dr); |
| dg = sk_clamp_0_255(255.0f * dg); |
| db = sk_clamp_0_255(255.0f * db); |
| |
| Sk4i da = Sk4i::Load(src) & 0xFF000000; |
| |
| Sk4i rgba = (Sk4f_round(dr) << kRShift) |
| | (Sk4f_round(dg) << kGShift) |
| | (Sk4f_round(db) << kBShift) |
| | (da ); |
| rgba.store(dst); |
| } |
| |
| template <Order kOrder> |
| static AI void store_linear_1(void* dst, const uint32_t* src, |
| Sk4f& rgba, const Sk4f&, |
| const uint8_t* const[3]) { |
| rgba = sk_clamp_0_255(255.0f * rgba); |
| |
| uint32_t tmp; |
| SkNx_cast<uint8_t>(Sk4f_round(rgba)).store(&tmp); |
| tmp = (*src & 0xFF000000) | (tmp & 0x00FFFFFF); |
| if (kBGRA_Order == kOrder) { |
| tmp = SkSwizzle_RB(tmp); |
| } |
| |
| *(uint32_t*)dst = tmp; |
| } |
| |
| template <Order kOrder> |
| static AI void store_f16(void* dst, const uint32_t* src, Sk4f& dr, Sk4f& dg, Sk4f& db, Sk4f& da, |
| const uint8_t* const[3]) { |
| Sk4h::Store4(dst, SkFloatToHalf_finite_ftz(dr), |
| SkFloatToHalf_finite_ftz(dg), |
| SkFloatToHalf_finite_ftz(db), |
| SkFloatToHalf_finite_ftz(da)); |
| } |
| |
| template <Order kOrder> |
| static AI void store_f16_1(void* dst, const uint32_t* src, |
| Sk4f& rgba, const Sk4f& a, |
| const uint8_t* const[3]) { |
| rgba = Sk4f(rgba[0], rgba[1], rgba[2], a[3]); |
| SkFloatToHalf_finite_ftz(rgba).store((uint64_t*) dst); |
| } |
| |
| template <Order kOrder> |
| static AI void store_f16_opaque(void* dst, const uint32_t* src, Sk4f& dr, Sk4f& dg, Sk4f& db, |
| Sk4f&, const uint8_t* const[3]) { |
| Sk4h::Store4(dst, SkFloatToHalf_finite_ftz(dr), |
| SkFloatToHalf_finite_ftz(dg), |
| SkFloatToHalf_finite_ftz(db), |
| SK_Half1); |
| } |
| |
| template <Order kOrder> |
| static AI void store_f16_1_opaque(void* dst, const uint32_t* src, |
| Sk4f& rgba, const Sk4f&, |
| const uint8_t* const[3]) { |
| uint64_t tmp; |
| SkFloatToHalf_finite_ftz(rgba).store(&tmp); |
| tmp &= 0x0000FFFFFFFFFFFF; |
| tmp |= static_cast<uint64_t>(SK_Half1) << 48; |
| *((uint64_t*) dst) = tmp; |
| } |
| |
| template <Order kOrder> |
| static AI void store_generic(void* dst, const uint32_t* src, Sk4f& dr, Sk4f& dg, Sk4f& db, Sk4f&, |
| const uint8_t* const dstTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| dr = Sk4f::Min(Sk4f::Max(1023.0f * dr, 0.0f), 1023.0f); |
| dg = Sk4f::Min(Sk4f::Max(1023.0f * dg, 0.0f), 1023.0f); |
| db = Sk4f::Min(Sk4f::Max(1023.0f * db, 0.0f), 1023.0f); |
| |
| Sk4i ir = Sk4f_round(dr); |
| Sk4i ig = Sk4f_round(dg); |
| Sk4i ib = Sk4f_round(db); |
| |
| Sk4i da = Sk4i::Load(src) & 0xFF000000; |
| |
| uint32_t* dst32 = (uint32_t*) dst; |
| dst32[0] = dstTables[0][ir[0]] << kRShift |
| | dstTables[1][ig[0]] << kGShift |
| | dstTables[2][ib[0]] << kBShift |
| | da[0]; |
| dst32[1] = dstTables[0][ir[1]] << kRShift |
| | dstTables[1][ig[1]] << kGShift |
| | dstTables[2][ib[1]] << kBShift |
| | da[1]; |
| dst32[2] = dstTables[0][ir[2]] << kRShift |
| | dstTables[1][ig[2]] << kGShift |
| | dstTables[2][ib[2]] << kBShift |
| | da[2]; |
| dst32[3] = dstTables[0][ir[3]] << kRShift |
| | dstTables[1][ig[3]] << kGShift |
| | dstTables[2][ib[3]] << kBShift |
| | da[3]; |
| } |
| |
| template <Order kOrder> |
| static AI void store_generic_1(void* dst, const uint32_t* src, |
| Sk4f& rgba, const Sk4f&, |
| const uint8_t* const dstTables[3]) { |
| int kRShift, kGShift = 8, kBShift; |
| set_rb_shifts(kOrder, &kRShift, &kBShift); |
| rgba = Sk4f::Min(Sk4f::Max(1023.0f * rgba, 0.0f), 1023.0f); |
| |
| Sk4i indices = Sk4f_round(rgba); |
| |
| *((uint32_t*) dst) = dstTables[0][indices[0]] << kRShift |
| | dstTables[1][indices[1]] << kGShift |
| | dstTables[2][indices[2]] << kBShift |
| | (*src & 0xFF000000); |
| } |
| |
| typedef decltype(load_rgb_from_tables<kRGBA_Order> )* LoadFn; |
| typedef decltype(load_rgb_from_tables_1<kRGBA_Order>)* Load1Fn; |
| typedef decltype(store_generic<kRGBA_Order> )* StoreFn; |
| typedef decltype(store_generic_1<kRGBA_Order> )* Store1Fn; |
| |
| enum SrcFormat { |
| kRGBA_8888_Linear_SrcFormat, |
| kRGBA_8888_Table_SrcFormat, |
| kBGRA_8888_Linear_SrcFormat, |
| kBGRA_8888_Table_SrcFormat, |
| }; |
| |
| enum DstFormat { |
| kRGBA_8888_Linear_DstFormat, |
| kRGBA_8888_SRGB_DstFormat, |
| kRGBA_8888_2Dot2_DstFormat, |
| kRGBA_8888_Table_DstFormat, |
| kBGRA_8888_Linear_DstFormat, |
| kBGRA_8888_SRGB_DstFormat, |
| kBGRA_8888_2Dot2_DstFormat, |
| kBGRA_8888_Table_DstFormat, |
| kF16_Linear_DstFormat, |
| }; |
| |
| template <SrcFormat kSrc, |
| DstFormat kDst, |
| SkAlphaType kAlphaType, |
| ColorSpaceMatch kCSM> |
| static void color_xform_RGBA(void* dst, const void* vsrc, int len, |
| const float* const srcTables[3], const float matrix[13], |
| const uint8_t* const dstTables[3]) { |
| LoadFn load; |
| Load1Fn load_1; |
| const bool kLoadAlpha = (kPremul_SkAlphaType == kAlphaType) || |
| (kF16_Linear_DstFormat == kDst && kOpaque_SkAlphaType != kAlphaType); |
| switch (kSrc) { |
| case kRGBA_8888_Linear_SrcFormat: |
| if (kLoadAlpha) { |
| load = load_rgba_linear<kRGBA_Order>; |
| load_1 = load_rgba_linear_1<kRGBA_Order>; |
| } else { |
| load = load_rgb_linear<kRGBA_Order>; |
| load_1 = load_rgb_linear_1<kRGBA_Order>; |
| } |
| break; |
| case kRGBA_8888_Table_SrcFormat: |
| if (kLoadAlpha) { |
| load = load_rgba_from_tables<kRGBA_Order>; |
| load_1 = load_rgba_from_tables_1<kRGBA_Order>; |
| } else { |
| load = load_rgb_from_tables<kRGBA_Order>; |
| load_1 = load_rgb_from_tables_1<kRGBA_Order>; |
| } |
| break; |
| case kBGRA_8888_Linear_SrcFormat: |
| if (kLoadAlpha) { |
| load = load_rgba_linear<kBGRA_Order>; |
| load_1 = load_rgba_linear_1<kBGRA_Order>; |
| } else { |
| load = load_rgb_linear<kBGRA_Order>; |
| load_1 = load_rgb_linear_1<kBGRA_Order>; |
| } |
| break; |
| case kBGRA_8888_Table_SrcFormat: |
| if (kLoadAlpha) { |
| load = load_rgba_from_tables<kBGRA_Order>; |
| load_1 = load_rgba_from_tables_1<kBGRA_Order>; |
| } else { |
| load = load_rgb_from_tables<kBGRA_Order>; |
| load_1 = load_rgb_from_tables_1<kBGRA_Order>; |
| } |
| break; |
| } |
| |
| StoreFn store; |
| Store1Fn store_1; |
| size_t sizeOfDstPixel; |
| switch (kDst) { |
| case kRGBA_8888_Linear_DstFormat: |
| store = store_linear<kRGBA_Order>; |
| store_1 = store_linear_1<kRGBA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kRGBA_8888_SRGB_DstFormat: |
| store = store_srgb<kRGBA_Order>; |
| store_1 = store_srgb_1<kRGBA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kRGBA_8888_2Dot2_DstFormat: |
| store = store_2dot2<kRGBA_Order>; |
| store_1 = store_2dot2_1<kRGBA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kRGBA_8888_Table_DstFormat: |
| store = store_generic<kRGBA_Order>; |
| store_1 = store_generic_1<kRGBA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kBGRA_8888_Linear_DstFormat: |
| store = store_linear<kBGRA_Order>; |
| store_1 = store_linear_1<kBGRA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kBGRA_8888_SRGB_DstFormat: |
| store = store_srgb<kBGRA_Order>; |
| store_1 = store_srgb_1<kBGRA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kBGRA_8888_2Dot2_DstFormat: |
| store = store_2dot2<kBGRA_Order>; |
| store_1 = store_2dot2_1<kBGRA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kBGRA_8888_Table_DstFormat: |
| store = store_generic<kBGRA_Order>; |
| store_1 = store_generic_1<kBGRA_Order>; |
| sizeOfDstPixel = 4; |
| break; |
| case kF16_Linear_DstFormat: |
| store = (kOpaque_SkAlphaType == kAlphaType) ? store_f16_opaque<kRGBA_Order> : |
| store_f16<kRGBA_Order>; |
| store_1 = (kOpaque_SkAlphaType == kAlphaType) ? store_f16_1_opaque<kRGBA_Order> : |
| store_f16_1<kRGBA_Order>; |
| sizeOfDstPixel = 8; |
| break; |
| } |
| |
| // We always clamp before converting to 8888 outputs (because we have to). |
| // In these cases, we also need a clamp before the premul step to make sure |
| // R, G, B are not logically greater than A. |
| const bool kClamp = kRGBA_8888_Linear_DstFormat == kDst || |
| kRGBA_8888_SRGB_DstFormat == kDst || |
| kRGBA_8888_2Dot2_DstFormat == kDst || |
| kRGBA_8888_Table_DstFormat == kDst; |
| |
| const uint32_t* src = (const uint32_t*) vsrc; |
| Sk4f rXgXbX, rYgYbY, rZgZbZ, rTgTbT; |
| load_matrix(matrix, rXgXbX, rYgYbY, rZgZbZ, rTgTbT); |
| |
| if (len >= 4) { |
| // Naively this would be a loop of load-transform-store, but we found it faster to |
| // move the N+1th load ahead of the Nth store. We don't bother doing this for N<4. |
| Sk4f r, g, b, a; |
| load(src, r, g, b, a, srcTables); |
| src += 4; |
| len -= 4; |
| |
| Sk4f dr, dg, db, da; |
| while (len >= 4) { |
| if (kNone_ColorSpaceMatch == kCSM) { |
| transform_gamut(r, g, b, a, rXgXbX, rYgYbY, rZgZbZ, dr, dg, db, da); |
| translate_gamut(rTgTbT, dr, dg, db); |
| } else { |
| dr = r; |
| dg = g; |
| db = b; |
| da = a; |
| } |
| |
| if (kPremul_SkAlphaType == kAlphaType) { |
| premultiply(dr, dg, db, da, kClamp); |
| } |
| |
| load(src, r, g, b, a, srcTables); |
| |
| store(dst, src - 4, dr, dg, db, da, dstTables); |
| dst = SkTAddOffset<void>(dst, 4 * sizeOfDstPixel); |
| src += 4; |
| len -= 4; |
| } |
| |
| if (kNone_ColorSpaceMatch == kCSM) { |
| transform_gamut(r, g, b, a, rXgXbX, rYgYbY, rZgZbZ, dr, dg, db, da); |
| translate_gamut(rTgTbT, dr, dg, db); |
| } else { |
| dr = r; |
| dg = g; |
| db = b; |
| da = a; |
| } |
| |
| if (kPremul_SkAlphaType == kAlphaType) { |
| premultiply(dr, dg, db, da, kClamp); |
| } |
| |
| store(dst, src - 4, dr, dg, db, da, dstTables); |
| dst = SkTAddOffset<void>(dst, 4 * sizeOfDstPixel); |
| } |
| |
| while (len > 0) { |
| Sk4f r, g, b, a; |
| load_1(src, r, g, b, a, srcTables); |
| |
| Sk4f rgba; |
| if (kNone_ColorSpaceMatch == kCSM) { |
| transform_gamut_1(r, g, b, rXgXbX, rYgYbY, rZgZbZ, rgba); |
| translate_gamut_1(rTgTbT, rgba); |
| } else { |
| rgba = Sk4f(r[0], g[0], b[0], a[0]); |
| } |
| |
| if (kPremul_SkAlphaType == kAlphaType) { |
| premultiply_1(a, rgba, kClamp); |
| } |
| |
| store_1(dst, src, rgba, a, dstTables); |
| |
| src += 1; |
| len -= 1; |
| dst = SkTAddOffset<void>(dst, sizeOfDstPixel); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static AI int num_tables(SkColorSpace_XYZ* space) { |
| switch (space->gammaNamed()) { |
| case kSRGB_SkGammaNamed: |
| case k2Dot2Curve_SkGammaNamed: |
| case kLinear_SkGammaNamed: |
| return 0; |
| default: { |
| const SkGammas* gammas = space->gammas(); |
| SkASSERT(gammas); |
| |
| bool gammasAreMatching = (gammas->type(0) == gammas->type(1)) && |
| (gammas->data(0) == gammas->data(1)) && |
| (gammas->type(0) == gammas->type(2)) && |
| (gammas->data(0) == gammas->data(2)); |
| |
| // It's likely that each component will have the same gamma. In this case, |
| // we only need to build one table. |
| return gammasAreMatching ? 1 : 3; |
| } |
| } |
| } |
| |
| template <ColorSpaceMatch kCSM> |
| SkColorSpaceXform_XYZ<kCSM> |
| ::SkColorSpaceXform_XYZ(SkColorSpace_XYZ* srcSpace, const SkMatrix44& srcToDst, |
| SkColorSpace_XYZ* dstSpace) |
| { |
| fSrcToDst[ 0] = srcToDst.get(0, 0); |
| fSrcToDst[ 1] = srcToDst.get(1, 0); |
| fSrcToDst[ 2] = srcToDst.get(2, 0); |
| fSrcToDst[ 3] = srcToDst.get(0, 1); |
| fSrcToDst[ 4] = srcToDst.get(1, 1); |
| fSrcToDst[ 5] = srcToDst.get(2, 1); |
| fSrcToDst[ 6] = srcToDst.get(0, 2); |
| fSrcToDst[ 7] = srcToDst.get(1, 2); |
| fSrcToDst[ 8] = srcToDst.get(2, 2); |
| fSrcToDst[ 9] = srcToDst.get(0, 3); |
| fSrcToDst[10] = srcToDst.get(1, 3); |
| fSrcToDst[11] = srcToDst.get(2, 3); |
| fSrcToDst[12] = 0.0f; |
| |
| const int numSrcTables = num_tables(srcSpace); |
| const size_t srcEntries = numSrcTables * 256; |
| const bool srcGammasAreMatching = (1 >= numSrcTables); |
| fSrcStorage.reset(srcEntries); |
| build_gamma_tables(fSrcGammaTables, fSrcStorage.get(), 256, srcSpace, kToLinear, |
| srcGammasAreMatching); |
| |
| const int numDstTables = num_tables(dstSpace); |
| dstSpace->toDstGammaTables(fDstGammaTables, &fDstStorage, numDstTables); |
| |
| if (srcSpace->gammaIsLinear()) { |
| fSrcGamma = kLinear_SrcGamma; |
| } else if (kSRGB_SkGammaNamed == srcSpace->gammaNamed()) { |
| fSrcGamma = kSRGB_SrcGamma; |
| } else { |
| fSrcGamma = kTable_SrcGamma; |
| } |
| |
| switch (dstSpace->gammaNamed()) { |
| case kSRGB_SkGammaNamed: |
| fDstGamma = kSRGB_DstGamma; |
| break; |
| case k2Dot2Curve_SkGammaNamed: |
| fDstGamma = k2Dot2_DstGamma; |
| break; |
| case kLinear_SkGammaNamed: |
| fDstGamma = kLinear_DstGamma; |
| break; |
| default: |
| fDstGamma = kTable_DstGamma; |
| break; |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| template <SrcFormat kSrc, DstFormat kDst, ColorSpaceMatch kCSM> |
| static AI bool apply_set_alpha(void* dst, const void* src, int len, SkAlphaType alphaType, |
| const float* const srcTables[3], const float matrix[13], |
| const uint8_t* const dstTables[3]) { |
| switch (alphaType) { |
| case kOpaque_SkAlphaType: |
| color_xform_RGBA<kSrc, kDst, kOpaque_SkAlphaType, kCSM> |
| (dst, src, len, srcTables, matrix, dstTables); |
| return true; |
| case kPremul_SkAlphaType: |
| color_xform_RGBA<kSrc, kDst, kPremul_SkAlphaType, kCSM> |
| (dst, src, len, srcTables, matrix, dstTables); |
| return true; |
| case kUnpremul_SkAlphaType: |
| color_xform_RGBA<kSrc, kDst, kUnpremul_SkAlphaType, kCSM> |
| (dst, src, len, srcTables, matrix, dstTables); |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| template <DstFormat kDst, ColorSpaceMatch kCSM> |
| static AI bool apply_set_src(void* dst, const void* src, int len, SkAlphaType alphaType, |
| const float* const srcTables[3], const float matrix[13], |
| const uint8_t* const dstTables[3], |
| SkColorSpaceXform::ColorFormat srcColorFormat, |
| SrcGamma srcGamma) { |
| switch (srcColorFormat) { |
| case SkColorSpaceXform::kRGBA_8888_ColorFormat: |
| switch (srcGamma) { |
| case kLinear_SrcGamma: |
| return apply_set_alpha<kRGBA_8888_Linear_SrcFormat, kDst, kCSM> |
| (dst, src, len, alphaType, nullptr, matrix, dstTables); |
| default: |
| return apply_set_alpha<kRGBA_8888_Table_SrcFormat, kDst, kCSM> |
| (dst, src, len, alphaType, srcTables, matrix, dstTables); |
| } |
| case SkColorSpaceXform::kBGRA_8888_ColorFormat: |
| switch (srcGamma) { |
| case kLinear_SrcGamma: |
| return apply_set_alpha<kBGRA_8888_Linear_SrcFormat, kDst, kCSM> |
| (dst, src, len, alphaType, nullptr, matrix, dstTables); |
| default: |
| return apply_set_alpha<kBGRA_8888_Table_SrcFormat, kDst, kCSM> |
| (dst, src, len, alphaType, srcTables, matrix, dstTables); |
| } |
| default: |
| return false; |
| } |
| } |
| |
| #undef AI |
| |
| template <ColorSpaceMatch kCSM> |
| bool SkColorSpaceXform_XYZ<kCSM> |
| ::onApply(ColorFormat dstColorFormat, void* dst, ColorFormat srcColorFormat, const void* src, |
| int len, SkAlphaType alphaType) const |
| { |
| if (kFull_ColorSpaceMatch == kCSM) { |
| if (kPremul_SkAlphaType != alphaType) { |
| if ((kRGBA_8888_ColorFormat == dstColorFormat && |
| kRGBA_8888_ColorFormat == srcColorFormat) || |
| (kBGRA_8888_ColorFormat == dstColorFormat && |
| kBGRA_8888_ColorFormat == srcColorFormat)) |
| { |
| memcpy(dst, src, len * sizeof(uint32_t)); |
| return true; |
| } |
| if ((kRGBA_8888_ColorFormat == dstColorFormat && |
| kBGRA_8888_ColorFormat == srcColorFormat) || |
| (kBGRA_8888_ColorFormat == dstColorFormat && |
| kRGBA_8888_ColorFormat == srcColorFormat)) |
| { |
| SkOpts::RGBA_to_BGRA((uint32_t*) dst, src, len); |
| return true; |
| } |
| } |
| } |
| |
| if (kRGBA_F32_ColorFormat == dstColorFormat || kRGBA_U16_BE_ColorFormat == srcColorFormat) { |
| return this->applyPipeline(dstColorFormat, dst, srcColorFormat, src, len, alphaType); |
| } |
| |
| switch (dstColorFormat) { |
| case kRGBA_8888_ColorFormat: |
| switch (fDstGamma) { |
| case kLinear_DstGamma: |
| return apply_set_src<kRGBA_8888_Linear_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, nullptr, |
| srcColorFormat, fSrcGamma); |
| case kSRGB_DstGamma: |
| return apply_set_src<kRGBA_8888_SRGB_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, nullptr, |
| srcColorFormat, fSrcGamma); |
| case k2Dot2_DstGamma: |
| return apply_set_src<kRGBA_8888_2Dot2_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, nullptr, |
| srcColorFormat, fSrcGamma); |
| case kTable_DstGamma: |
| return apply_set_src<kRGBA_8888_Table_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, fDstGammaTables, |
| srcColorFormat, fSrcGamma); |
| } |
| case kBGRA_8888_ColorFormat: |
| switch (fDstGamma) { |
| case kLinear_DstGamma: |
| return apply_set_src<kBGRA_8888_Linear_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, nullptr, |
| srcColorFormat, fSrcGamma); |
| case kSRGB_DstGamma: |
| return apply_set_src<kBGRA_8888_SRGB_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, nullptr, |
| srcColorFormat, fSrcGamma); |
| case k2Dot2_DstGamma: |
| return apply_set_src<kBGRA_8888_2Dot2_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, nullptr, |
| srcColorFormat, fSrcGamma); |
| case kTable_DstGamma: |
| return apply_set_src<kBGRA_8888_Table_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, fDstGammaTables, |
| srcColorFormat, fSrcGamma); |
| } |
| case kRGBA_F16_ColorFormat: |
| switch (fDstGamma) { |
| case kLinear_DstGamma: |
| return apply_set_src<kF16_Linear_DstFormat, kCSM> |
| (dst, src, len, alphaType, fSrcGammaTables, fSrcToDst, nullptr, |
| srcColorFormat, fSrcGamma); |
| default: |
| return false; |
| } |
| default: |
| SkASSERT(false); |
| return false; |
| } |
| } |
| |
| bool SkColorSpaceXform::apply(ColorFormat dstColorFormat, void* dst, ColorFormat srcColorFormat, |
| const void* src, int len, SkAlphaType alphaType) const { |
| return ((SkColorSpaceXform_Base*) this)->onApply(dstColorFormat, dst, srcColorFormat, src, len, |
| alphaType); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| template <ColorSpaceMatch kCSM> |
| bool SkColorSpaceXform_XYZ<kCSM> |
| ::applyPipeline(ColorFormat dstColorFormat, void* dst, ColorFormat srcColorFormat, |
| const void* src, int len, SkAlphaType alphaType) const { |
| SkRasterPipeline pipeline; |
| |
| LoadTablesContext loadTables; |
| switch (srcColorFormat) { |
| case kRGBA_8888_ColorFormat: |
| if (kLinear_SrcGamma == fSrcGamma) { |
| pipeline.append(SkRasterPipeline::load_8888, &src); |
| } else { |
| loadTables.fSrc = src; |
| loadTables.fR = fSrcGammaTables[0]; |
| loadTables.fG = fSrcGammaTables[1]; |
| loadTables.fB = fSrcGammaTables[2]; |
| pipeline.append(SkRasterPipeline::load_tables, &loadTables); |
| } |
| |
| break; |
| case kBGRA_8888_ColorFormat: |
| if (kLinear_SrcGamma == fSrcGamma) { |
| pipeline.append(SkRasterPipeline::load_8888, &src); |
| } else { |
| loadTables.fSrc = src; |
| loadTables.fR = fSrcGammaTables[2]; |
| loadTables.fG = fSrcGammaTables[1]; |
| loadTables.fB = fSrcGammaTables[0]; |
| pipeline.append(SkRasterPipeline::load_tables, &loadTables); |
| } |
| |
| pipeline.append(SkRasterPipeline::swap_rb); |
| break; |
| case kRGBA_U16_BE_ColorFormat: |
| switch (fSrcGamma) { |
| case kLinear_SrcGamma: |
| pipeline.append(SkRasterPipeline::load_u16_be, &src); |
| break; |
| case kSRGB_SrcGamma: |
| pipeline.append(SkRasterPipeline::load_u16_be, &src); |
| pipeline.append_from_srgb(kUnpremul_SkAlphaType); |
| break; |
| case kTable_SrcGamma: |
| loadTables.fSrc = src; |
| loadTables.fR = fSrcGammaTables[0]; |
| loadTables.fG = fSrcGammaTables[1]; |
| loadTables.fB = fSrcGammaTables[2]; |
| pipeline.append(SkRasterPipeline::load_tables_u16_be, &loadTables); |
| break; |
| } |
| break; |
| default: |
| return false; |
| } |
| |
| if (kNone_ColorSpaceMatch == kCSM) { |
| pipeline.append(SkRasterPipeline::matrix_3x4, fSrcToDst); |
| |
| if (kRGBA_8888_ColorFormat == dstColorFormat || kBGRA_8888_ColorFormat == dstColorFormat) { |
| bool need_clamp_0, need_clamp_1; |
| analyze_3x4_matrix(fSrcToDst, &need_clamp_0, &need_clamp_1); |
| |
| if (need_clamp_0) { pipeline.append(SkRasterPipeline::clamp_0); } |
| if (need_clamp_1) { pipeline.append(SkRasterPipeline::clamp_1); } |
| } |
| } |
| |
| if (kPremul_SkAlphaType == alphaType) { |
| pipeline.append(SkRasterPipeline::premul); |
| } |
| |
| StoreTablesContext storeTables; |
| switch (fDstGamma) { |
| case kSRGB_DstGamma: |
| pipeline.append(SkRasterPipeline::to_srgb); |
| break; |
| case k2Dot2_DstGamma: |
| pipeline.append(SkRasterPipeline::to_2dot2); |
| break; |
| default: |
| break; |
| } |
| |
| switch (dstColorFormat) { |
| case kRGBA_8888_ColorFormat: |
| if (kTable_DstGamma == fDstGamma) { |
| storeTables.fDst = (uint32_t*) dst; |
| storeTables.fR = fDstGammaTables[0]; |
| storeTables.fG = fDstGammaTables[1]; |
| storeTables.fB = fDstGammaTables[2]; |
| storeTables.fCount = SkColorSpaceXform_Base::kDstGammaTableSize; |
| pipeline.append(SkRasterPipeline::store_tables, &storeTables); |
| } else { |
| pipeline.append(SkRasterPipeline::store_8888, &dst); |
| } |
| break; |
| case kBGRA_8888_ColorFormat: |
| if (kTable_DstGamma == fDstGamma) { |
| storeTables.fDst = (uint32_t*) dst; |
| storeTables.fR = fDstGammaTables[2]; |
| storeTables.fG = fDstGammaTables[1]; |
| storeTables.fB = fDstGammaTables[0]; |
| storeTables.fCount = SkColorSpaceXform_Base::kDstGammaTableSize; |
| pipeline.append(SkRasterPipeline::swap_rb); |
| pipeline.append(SkRasterPipeline::store_tables, &storeTables); |
| } else { |
| pipeline.append(SkRasterPipeline::swap_rb); |
| pipeline.append(SkRasterPipeline::store_8888, &dst); |
| } |
| break; |
| case kRGBA_F16_ColorFormat: |
| if (kLinear_DstGamma != fDstGamma) { |
| return false; |
| } |
| pipeline.append(SkRasterPipeline::store_f16, &dst); |
| break; |
| case kRGBA_F32_ColorFormat: |
| if (kLinear_DstGamma != fDstGamma) { |
| return false; |
| } |
| pipeline.append(SkRasterPipeline::store_f32, &dst); |
| break; |
| default: |
| return false; |
| } |
| |
| pipeline.run(0, 0, len); |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| std::unique_ptr<SkColorSpaceXform> SlowIdentityXform(SkColorSpace_XYZ* space) { |
| return std::unique_ptr<SkColorSpaceXform>(new SkColorSpaceXform_XYZ |
| <kNone_ColorSpaceMatch>(space, SkMatrix::I(), space)); |
| } |
