2 # -*- coding: utf-8 -*-
5 Implements support for general colorspaces conversions and transfer functions.
12 import aces_ocio.generate_lut as genlut
13 import aces_ocio.create_aces_colorspaces as aces
14 from aces_ocio.utilities import ColorSpace, mat44_from_mat33, sanitize_path, compact
17 __author__ = 'ACES Developers'
18 __copyright__ = 'Copyright (C) 2014 - 2015 - ACES Developers'
20 __maintainer__ = 'ACES Developers'
21 __email__ = 'aces@oscars.org'
22 __status__ = 'Production'
24 __all__ = ['create_generic_matrix',
27 # -------------------------------------------------------------------------
28 # Generic Matrix transform
29 # -------------------------------------------------------------------------
30 def create_generic_matrix(name='matrix',
31 from_reference_values=None,
32 to_reference_values=None,
35 if from_reference_values is None:
36 from_reference_values = []
37 if to_reference_values is None:
38 to_reference_values = []
41 cs.description = 'The %s color space' % name
43 cs.equality_group = name
47 cs.to_reference_transforms = []
48 if to_reference_values:
49 for matrix in to_reference_values:
50 cs.to_reference_transforms.append({
52 'matrix': mat44_from_mat33(matrix),
53 'direction': 'forward'})
55 cs.from_reference_transforms = []
56 if from_reference_values:
57 for matrix in from_reference_values:
58 cs.from_reference_transforms.append({
60 'matrix': mat44_from_mat33(matrix),
61 'direction': 'forward'})
65 def create_colorspaces(lut_directory,
70 Generates the colorspace conversions.
75 Parameter description.
80 Return value description.
85 cs = create_generic_matrix('XYZ',
86 from_reference_values=[aces.ACES_AP0_to_XYZ],
88 colorspaces.append(cs)
90 cs = create_generic_matrix(
92 to_reference_values=[aces.ACES_AP1_to_AP0],
94 colorspaces.append(cs)
96 # *ACES* to *Linear*, *P3D60* primaries.
97 XYZ_to_P3D60 = [2.4027414142, -0.8974841639, -0.3880533700,
98 -0.8325796487, 1.7692317536, 0.0237127115,
99 0.0388233815, -0.0824996856, 1.0363685997]
101 cs = create_generic_matrix(
103 from_reference_values=[aces.ACES_AP0_to_XYZ, XYZ_to_P3D60],
104 aliases=["lin_p3d60"])
105 colorspaces.append(cs)
107 # *ACES* to *Linear*, *P3DCI* primaries.
108 XYZ_to_P3DCI = [2.7253940305, -1.0180030062, -0.4401631952,
109 -0.7951680258, 1.6897320548, 0.0226471906,
110 0.0412418914, -0.0876390192, 1.1009293786]
112 cs = create_generic_matrix(
114 from_reference_values=[aces.ACES_AP0_to_XYZ, XYZ_to_P3DCI],
115 aliases=["lin_p3dci"])
116 colorspaces.append(cs)
118 # *ACES* to *Linear*, *Rec. 709* primaries.
119 XYZ_to_Rec709 = [3.2409699419, -1.5373831776, -0.4986107603,
120 -0.9692436363, 1.8759675015, 0.0415550574,
121 0.0556300797, -0.2039769589, 1.0569715142]
123 cs = create_generic_matrix(
125 from_reference_values=[aces.ACES_AP0_to_XYZ, XYZ_to_Rec709],
126 aliases=["lin_rec709"])
127 colorspaces.append(cs)
129 # *ACES* to *Linear*, *Rec. 2020* primaries.
130 XYZ_to_Rec2020 = [1.7166511880, -0.3556707838, -0.2533662814,
131 -0.6666843518, 1.6164812366, 0.0157685458,
132 0.0176398574, -0.0427706133, 0.9421031212]
134 cs = create_generic_matrix(
136 from_reference_values=[aces.ACES_AP0_to_XYZ, XYZ_to_Rec2020],
137 aliases=["lin_rec2020"])
138 colorspaces.append(cs)