diff options
Diffstat (limited to 'lcms2mt/plugins/fast_float/src/fast_float_matsh.c')
| -rw-r--r-- | lcms2mt/plugins/fast_float/src/fast_float_matsh.c | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/lcms2mt/plugins/fast_float/src/fast_float_matsh.c b/lcms2mt/plugins/fast_float/src/fast_float_matsh.c new file mode 100644 index 00000000..07396e59 --- /dev/null +++ b/lcms2mt/plugins/fast_float/src/fast_float_matsh.c @@ -0,0 +1,323 @@ +//--------------------------------------------------------------------------------- +// +// Little Color Management System, fast floating point extensions +// Copyright (c) 1998-2020 Marti Maria Saguer, all rights reserved +// +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. +// +//--------------------------------------------------------------------------------- + +// Optimization for matrix-shaper in float + +#include "fast_float_internal.h" + + +// This is the private data container used by this optimization +typedef struct { + + + cmsFloat32Number Mat[3][3]; + cmsFloat32Number Off[3]; + + cmsFloat32Number Shaper1R[MAX_NODES_IN_CURVE]; + cmsFloat32Number Shaper1G[MAX_NODES_IN_CURVE]; + cmsFloat32Number Shaper1B[MAX_NODES_IN_CURVE]; + + cmsFloat32Number Shaper2R[MAX_NODES_IN_CURVE]; + cmsFloat32Number Shaper2G[MAX_NODES_IN_CURVE]; + cmsFloat32Number Shaper2B[MAX_NODES_IN_CURVE]; + + cmsBool UseOff; + + void * real_ptr; + +} VXMatShaperFloatData; + + +static +VXMatShaperFloatData* malloc_aligned(cmsContext ContextID) +{ + cmsUInt8Number* real_ptr = (cmsUInt8Number*) _cmsMallocZero(ContextID, sizeof(VXMatShaperFloatData) + 32); + cmsUInt8Number* aligned = (cmsUInt8Number*) (((uintptr_t)real_ptr + 16) & ~0xf); + VXMatShaperFloatData* p = (VXMatShaperFloatData*) aligned; + + p ->real_ptr = real_ptr; + return p; +} + + + +// Free the private data container +static +void FreeMatShaper(cmsContext ContextID, void* Data) +{ + VXMatShaperFloatData* d = (VXMatShaperFloatData*)Data; + + if (d != NULL) + _cmsFree(ContextID, d->real_ptr); +} + + +static +void FillShaper(cmsContext ContextID, cmsFloat32Number* Table, cmsToneCurve* Curve) +{ + int i; + cmsFloat32Number R; + + for (i = 0; i < MAX_NODES_IN_CURVE; i++) { + + R = (cmsFloat32Number) i / (cmsFloat32Number) (MAX_NODES_IN_CURVE - 1); + + Table[i] = cmsEvalToneCurveFloat(ContextID, Curve, R); + } +} + + +// Compute the matrix-shaper structure +static +VXMatShaperFloatData* SetMatShaper(cmsContext ContextID, cmsToneCurve* Curve1[3], cmsMAT3* Mat, cmsVEC3* Off, cmsToneCurve* Curve2[3]) +{ + VXMatShaperFloatData* p; + int i, j; + + // Allocate a big chuck of memory to store precomputed tables + p = malloc_aligned(ContextID); + if (p == NULL) return FALSE; + + + // Precompute tables + FillShaper(ContextID, p->Shaper1R, Curve1[0]); + FillShaper(ContextID, p->Shaper1G, Curve1[1]); + FillShaper(ContextID, p->Shaper1B, Curve1[2]); + + FillShaper(ContextID, p->Shaper2R, Curve2[0]); + FillShaper(ContextID, p->Shaper2G, Curve2[1]); + FillShaper(ContextID, p->Shaper2B, Curve2[2]); + + + for (i=0; i < 3; i++) { + for (j=0; j < 3; j++) { + p->Mat[i][j] = (cmsFloat32Number) Mat->v[i].n[j]; + } + } + + + for (i = 0; i < 3; i++) { + + if (Off == NULL) { + + p->UseOff = FALSE; + p->Off[i] = 0.0; + } + else { + p->UseOff = TRUE; + p->Off[i] = (cmsFloat32Number)Off->n[i]; + + } + } + + + return p; +} + + + +// A fast matrix-shaper evaluator for floating point +static +void MatShaperFloat(cmsContext ContextID, struct _cmstransform_struct *CMMcargo, + const cmsFloat32Number* Input, + cmsFloat32Number* Output, + cmsUInt32Number len, + cmsUInt32Number Stride) +{ + VXMatShaperFloatData* p = (VXMatShaperFloatData*) _cmsGetTransformUserData(CMMcargo); + cmsFloat32Number l1, l2, l3; + cmsFloat32Number r, g, b; + cmsUInt32Number ii; + cmsUInt32Number SourceStartingOrder[cmsMAXCHANNELS]; + cmsUInt32Number SourceIncrements[cmsMAXCHANNELS]; + cmsUInt32Number DestStartingOrder[cmsMAXCHANNELS]; + cmsUInt32Number DestIncrements[cmsMAXCHANNELS]; + + const cmsUInt8Number* rin; + const cmsUInt8Number* gin; + const cmsUInt8Number* bin; + + cmsUInt8Number* rout; + cmsUInt8Number* gout; + cmsUInt8Number* bout; + + cmsUInt32Number nchans, nalpha; + + _cmsComputeComponentIncrements(cmsGetTransformInputFormat(ContextID, (cmsHTRANSFORM)CMMcargo), Stride, &nchans, &nalpha, SourceStartingOrder, SourceIncrements); + _cmsComputeComponentIncrements(cmsGetTransformOutputFormat(ContextID, (cmsHTRANSFORM)CMMcargo), Stride, &nchans, &nalpha, DestStartingOrder, DestIncrements); + + rin = (const cmsUInt8Number*)Input + SourceStartingOrder[0]; + gin = (const cmsUInt8Number*)Input + SourceStartingOrder[1]; + bin = (const cmsUInt8Number*)Input + SourceStartingOrder[2]; + + rout = (cmsUInt8Number*)Output + DestStartingOrder[0]; + gout = (cmsUInt8Number*)Output + DestStartingOrder[1]; + bout = (cmsUInt8Number*)Output + DestStartingOrder[2]; + + for (ii=0; ii < len; ii++) { + + r = flerp(p->Shaper1R, *(cmsFloat32Number*)rin); + g = flerp(p->Shaper1G, *(cmsFloat32Number*)gin); + b = flerp(p->Shaper1B, *(cmsFloat32Number*)bin); + + l1 = p->Mat[0][0] * r + p->Mat[0][1] * g + p->Mat[0][2] * b ; + l2 = p->Mat[1][0] * r + p->Mat[1][1] * g + p->Mat[1][2] * b ; + l3 = p->Mat[2][0] * r + p->Mat[2][1] * g + p->Mat[2][2] * b ; + + if (p->UseOff) { + + l1 += p->Off[0]; + l2 += p->Off[1]; + l3 += p->Off[2]; + } + + *(cmsFloat32Number*)rout = flerp(p->Shaper2R, l1); + *(cmsFloat32Number*)gout = flerp(p->Shaper2G, l2); + *(cmsFloat32Number*)bout = flerp(p->Shaper2B, l3); + + rin += SourceIncrements[0]; + gin += SourceIncrements[1]; + bin += SourceIncrements[2]; + + rout += DestIncrements[0]; + gout += DestIncrements[1]; + bout += DestIncrements[2]; + } + +} + + + +cmsBool OptimizeFloatMatrixShaper(cmsContext ContextID, + _cmsTransformFn* TransformFn, + void** UserData, + _cmsFreeUserDataFn* FreeUserData, + cmsPipeline** Lut, + cmsUInt32Number* InputFormat, + cmsUInt32Number* OutputFormat, + cmsUInt32Number* dwFlags) +{ + cmsStage* Curve1, *Curve2; + cmsStage* Matrix1, *Matrix2; + _cmsStageMatrixData* Data1; + _cmsStageMatrixData* Data2; + cmsMAT3 res; + cmsBool IdentityMat = FALSE; + cmsPipeline* Dest, *Src; + cmsUInt32Number nChans; + cmsFloat64Number factor = 1.0; + + + // Apply only to floating-point cases + if (!T_FLOAT(*InputFormat) || !T_FLOAT(*OutputFormat)) return FALSE; + + // Only works on RGB to RGB and gray to gray + if ( !( (T_CHANNELS(*InputFormat) == 3 && T_CHANNELS(*OutputFormat) == 3)) && + !( (T_CHANNELS(*InputFormat) == 1 && T_CHANNELS(*OutputFormat) == 1))) return FALSE; + + // Only works on float + if (T_BYTES(*InputFormat) != 4 || T_BYTES(*OutputFormat) != 4) return FALSE; + + // Seems suitable, proceed + Src = *Lut; + + // Check for shaper-matrix-matrix-shaper structure, that is what this optimizer stands for + if (!cmsPipelineCheckAndRetreiveStages(ContextID, Src, 4, + cmsSigCurveSetElemType, cmsSigMatrixElemType, cmsSigMatrixElemType, cmsSigCurveSetElemType, + &Curve1, &Matrix1, &Matrix2, &Curve2)) return FALSE; + + nChans = T_CHANNELS(*InputFormat); + + // Get both matrices, which are 3x3 + Data1 = (_cmsStageMatrixData*) cmsStageData(ContextID, Matrix1); + Data2 = (_cmsStageMatrixData*) cmsStageData(ContextID, Matrix2); + + // Input offset should be zero + if (Data1 ->Offset != NULL) return FALSE; + + if (cmsStageInputChannels(ContextID, Matrix1) == 1 && cmsStageOutputChannels(ContextID, Matrix2) == 1) + { + // This is a gray to gray. Just multiply + factor = Data1->Double[0]*Data2->Double[0] + + Data1->Double[1]*Data2->Double[1] + + Data1->Double[2]*Data2->Double[2]; + + if (fabs(1 - factor) < (1.0 / 65535.0)) IdentityMat = TRUE; + } + else + { + // Multiply both matrices to get the result + _cmsMAT3per(ContextID, &res, (cmsMAT3*) Data2 ->Double, (cmsMAT3*) Data1 ->Double); + + // Now the result is in res + Data2 -> Offset. Maybe is a plain identity? + IdentityMat = FALSE; + if (_cmsMAT3isIdentity(ContextID, &res) && Data2 ->Offset == NULL) { + + // We can get rid of full matrix + IdentityMat = TRUE; + } + } + + // Allocate an empty LUT + Dest = cmsPipelineAlloc(ContextID, nChans, nChans); + if (!Dest) return FALSE; + + // Assamble the new LUT + cmsPipelineInsertStage(ContextID, Dest, cmsAT_BEGIN, cmsStageDup(ContextID, Curve1)); + + if (!IdentityMat) { + + if (nChans == 1) + cmsPipelineInsertStage(ContextID, Dest, cmsAT_END, + cmsStageAllocMatrix(ContextID, 1, 1, (const cmsFloat64Number*) &factor, Data2->Offset)); + else + cmsPipelineInsertStage(ContextID, Dest, cmsAT_END, + cmsStageAllocMatrix(ContextID, 3, 3, (const cmsFloat64Number*) &res, Data2 ->Offset)); + } + + + cmsPipelineInsertStage(ContextID, Dest, cmsAT_END, cmsStageDup(ContextID, Curve2)); + + // If identity on matrix, we can further optimize the curves, so call the join curves routine + if (IdentityMat) { + + OptimizeFloatByJoiningCurves(ContextID, TransformFn, UserData, FreeUserData, &Dest, InputFormat, OutputFormat, dwFlags); + } + else { + _cmsStageToneCurvesData* mpeC1 = (_cmsStageToneCurvesData*) cmsStageData(ContextID, Curve1); + _cmsStageToneCurvesData* mpeC2 = (_cmsStageToneCurvesData*) cmsStageData(ContextID, Curve2); + + // In this particular optimization, caché does not help as it takes more time to deal with + // the cachthat with the pixel handling + *dwFlags |= cmsFLAGS_NOCACHE; + + // Setup the optimizarion routines + *UserData = SetMatShaper(ContextID, mpeC1 ->TheCurves, &res, (cmsVEC3*) Data2 ->Offset, mpeC2->TheCurves); + *FreeUserData = FreeMatShaper; + + *TransformFn = (_cmsTransformFn) MatShaperFloat; + } + + *dwFlags &= ~cmsFLAGS_CAN_CHANGE_FORMATTER; + cmsPipelineFree(ContextID, Src); + *Lut = Dest; + return TRUE; +} |