- #
- def createSlog(gamut, transferFunction, name='S-Log3'):
- name = "%s - %s" % (transferFunction, gamut)
- if transferFunction == "":
- name = "Linear - %s" % gamut
- if gamut == "":
- name = "%s" % transferFunction
-
- cs = ColorSpace(name)
- cs.description = name
- cs.equalityGroup = ''
- cs.family = 'Sony'
- cs.isData=False
-
- def sLog1ToLinear(SLog):
- b = 64.
- ab = 90.
- w = 940.
-
- if (SLog >= ab):
- lin = ( pow(10., ( ( ( SLog - b) / ( w - b) - 0.616596 - 0.03) / 0.432699)) - 0.037584) * 0.9
- else:
- lin = ( ( ( SLog - b) / ( w - b) - 0.030001222851889303) / 5.) * 0.9
- return lin
-
- def sLog2ToLinear(SLog):
- b = 64.
- ab = 90.
- w = 940.
-
- if (SLog >= ab):
- lin = ( 219. * ( pow(10., ( ( ( SLog - b) / ( w - b) - 0.616596 - 0.03) / 0.432699)) - 0.037584) / 155.) * 0.9
- else:
- lin = ( ( ( SLog - b) / ( w - b) - 0.030001222851889303) / 3.53881278538813) * 0.9
- return lin
-
- def sLog3ToLinear(codeValue):
- if codeValue >= (171.2102946929):
- linear = pow(10.0, ((codeValue - 420.0) / 261.5)) * (0.18 + 0.01) - 0.01
- else:
- linear = (codeValue - 95.0)*0.01125000/(171.2102946929 - 95.0)
- #print( codeValue, linear )
- return linear
-
- cs.toReferenceTransforms = []
-
- if transferFunction == "S-Log1":
- data = array.array('f', "\0" * lutResolution1d * 4)
- for c in range(lutResolution1d):
- data[c] = sLog1ToLinear(1023.0*c/(lutResolution1d-1))
-
- lut = "%s_to_linear.spi1d" % transferFunction
- genlut.writeSPI1D(lutDir + "/" + lut, 0.0, 1.0, data, lutResolution1d, 1)
-
- #print( "Writing %s" % lut)
-
- cs.toReferenceTransforms.append( {
- 'type':'lutFile',
- 'path':lut,
- 'interpolation':'linear',
- 'direction':'forward'
- } )
- elif transferFunction == "S-Log2":
- data = array.array('f', "\0" * lutResolution1d * 4)
- for c in range(lutResolution1d):
- data[c] = sLog2ToLinear(1023.0*c/(lutResolution1d-1))
-
- lut = "%s_to_linear.spi1d" % transferFunction
- genlut.writeSPI1D(lutDir + "/" + lut, 0.0, 1.0, data, lutResolution1d, 1)
-
- #print( "Writing %s" % lut)
-
- cs.toReferenceTransforms.append( {
- 'type':'lutFile',
- 'path':lut,
- 'interpolation':'linear',
- 'direction':'forward'
- } )
- elif transferFunction == "S-Log3":
- data = array.array('f', "\0" * lutResolution1d * 4)
- for c in range(lutResolution1d):
- data[c] = sLog3ToLinear(1023.0*c/(lutResolution1d-1))
-
- lut = "%s_to_linear.spi1d" % transferFunction
- genlut.writeSPI1D(lutDir + "/" + lut, 0.0, 1.0, data, lutResolution1d, 1)
-
- #print( "Writing %s" % lut)
-
- cs.toReferenceTransforms.append( {
- 'type':'lutFile',
- 'path':lut,
- 'interpolation':'linear',
- 'direction':'forward'
- } )
-
- if gamut == 'S-Gamut':
- cs.toReferenceTransforms.append( {
- 'type':'matrix',
- 'matrix':mat44FromMat33([0.754338638, 0.133697046, 0.111968437,
- 0.021198141, 1.005410934, -0.026610548,
- -0.009756991, 0.004508563, 1.005253201]),
- 'direction':'forward'
- })
- elif gamut == 'S-Gamut Daylight':
- cs.toReferenceTransforms.append( {
- 'type':'matrix',
- 'matrix':mat44FromMat33([0.8764457030, 0.0145411681, 0.1090131290,
- 0.0774075345, 0.9529571767, -0.0303647111,
- 0.0573564351, -0.1151066335, 1.0577501984]),
- 'direction':'forward'
- })
- elif gamut == 'S-Gamut Tungsten':
- cs.toReferenceTransforms.append( {
- 'type':'matrix',
- 'matrix':mat44FromMat33([1.0110238740, -0.1362526051, 0.1252287310,
- 0.1011994504, 0.9562196265, -0.0574190769,
- 0.0600766530, -0.1010185315, 1.0409418785]),
- 'direction':'forward'
- })
- elif gamut == 'S-Gamut3.Cine':
- cs.toReferenceTransforms.append( {
- 'type':'matrix',
- 'matrix':mat44FromMat33([0.6387886672, 0.2723514337, 0.0888598992,
- -0.0039159061, 1.0880732308, -0.0841573249,
- -0.0299072021, -0.0264325799, 1.0563397820]),
- 'direction':'forward'
- })
- elif gamut == 'S-Gamut3':
- cs.toReferenceTransforms.append( {
- 'type':'matrix',
- 'matrix':mat44FromMat33([0.7529825954, 0.1433702162, 0.1036471884,
- 0.0217076974, 1.0153188355, -0.0370265329,
- -0.0094160528, 0.0033704179, 1.0060456349]),
- 'direction':'forward'
- })
-
- cs.fromReferenceTransforms = []
- return cs
-
- # SLog1
- SLog1SGamut = createSlog("S-Gamut", "S-Log1", name="S-Log")
- configData['colorSpaces'].append(SLog1SGamut)
-
- # SLog2
- SLog2SGamut = createSlog("S-Gamut", "S-Log2", name="S-Log2")
- configData['colorSpaces'].append(SLog2SGamut)
-
- SLog2SGamutDaylight = createSlog("S-Gamut Daylight", "S-Log2", name="S-Log2")
- configData['colorSpaces'].append(SLog2SGamutDaylight)
-
- SLog2SGamutTungsten = createSlog("S-Gamut Tungsten", "S-Log2", name="S-Log2")
- configData['colorSpaces'].append(SLog2SGamutTungsten)
-
- # SLog3
- SLog3SGamut3Cine = createSlog("S-Gamut3.Cine", "S-Log3", name="S-Log3")
- configData['colorSpaces'].append(SLog3SGamut3Cine)
-
- SLog3SGamut3 = createSlog("S-Gamut3", "S-Log3", name="S-Log3")
- configData['colorSpaces'].append(SLog3SGamut3)
-
- # Linearization only
- SLog1 = createSlog("", "S-Log1", name="S-Log")
- configData['colorSpaces'].append(SLog1)
-
- SLog2 = createSlog("", "S-Log2", name="S-Log2")
- configData['colorSpaces'].append(SLog2)
-
- SLog3 = createSlog("", "S-Log3", name="S-Log3")
- configData['colorSpaces'].append(SLog3)
-
- # Primaries only
- SGamut = createSlog("S-Gamut", "", name="S-Log")
- configData['colorSpaces'].append(SGamut)
-
- SGamutDaylight = createSlog("S-Gamut Daylight", "", name="S-Log2")
- configData['colorSpaces'].append(SGamutDaylight)
-
- SGamutTungsten = createSlog("S-Gamut Tungsten", "", name="S-Log2")
- configData['colorSpaces'].append(SGamutTungsten)
-
- SGamut3Cine = createSlog("S-Gamut3.Cine", "", name="S-Log3")
- configData['colorSpaces'].append(SGamut3Cine)
-
- SGamut3 = createSlog("S-Gamut3", "", name="S-Log3")
- configData['colorSpaces'].append(SGamut3)