2 # -*- coding: utf-8 -*-
5 Implements support for general colorspaces conversions and transfer functions.
8 from __future__ import division
10 import PyOpenColorIO as ocio
12 import aces_ocio.create_aces_colorspaces as aces
13 from aces_ocio.utilities import ColorSpace, mat44_from_mat33
16 __author__ = 'ACES Developers'
17 __copyright__ = 'Copyright (C) 2014 - 2015 - ACES Developers'
19 __maintainer__ = 'ACES Developers'
20 __email__ = 'aces@oscars.org'
21 __status__ = 'Production'
23 __all__ = ['create_generic_matrix',
27 def create_generic_matrix(name='matrix',
28 from_reference_values=None,
29 to_reference_values=None,
37 Parameter description.
42 Return value description.
45 if from_reference_values is None:
46 from_reference_values = []
48 if to_reference_values is None:
49 to_reference_values = []
52 cs.description = 'The %s color space' % name
54 cs.equality_group = name
58 # A linear space needs allocation variables
59 cs.allocation_type = ocio.Constants.ALLOCATION_LG2
60 cs.allocation_vars = [-8, 5, 0.00390625]
62 cs.to_reference_transforms = []
63 if to_reference_values:
64 for matrix in to_reference_values:
65 cs.to_reference_transforms.append({
67 'matrix': mat44_from_mat33(matrix),
68 'direction': 'forward'})
70 cs.from_reference_transforms = []
71 if from_reference_values:
72 for matrix in from_reference_values:
73 cs.from_reference_transforms.append({
75 'matrix': mat44_from_mat33(matrix),
76 'direction': 'forward'})
81 def create_colorspaces(lut_directory,
85 Generates the colorspace conversions.
90 Parameter description.
95 Return value description.
100 cs = create_generic_matrix('XYZ',
101 from_reference_values=[aces.ACES_AP0_TO_XYZ],
103 colorspaces.append(cs)
105 cs = create_generic_matrix(
107 to_reference_values=[aces.ACES_AP1_TO_AP0],
109 colorspaces.append(cs)
111 # *ACES* to *Linear*, *P3D60* primaries.
112 XYZ_to_P3D60 = [2.4027414142, -0.8974841639, -0.3880533700,
113 -0.8325796487, 1.7692317536, 0.0237127115,
114 0.0388233815, -0.0824996856, 1.0363685997]
116 cs = create_generic_matrix(
118 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_P3D60],
119 aliases=["lin_p3d60"])
120 colorspaces.append(cs)
122 # *ACES* to *Linear*, *P3DCI* primaries.
123 XYZ_to_P3DCI = [2.7253940305, -1.0180030062, -0.4401631952,
124 -0.7951680258, 1.6897320548, 0.0226471906,
125 0.0412418914, -0.0876390192, 1.1009293786]
127 cs = create_generic_matrix(
129 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_P3DCI],
130 aliases=["lin_p3dci"])
131 colorspaces.append(cs)
133 # *ACES* to *Linear*, *Rec. 709* primaries.
134 XYZ_to_Rec709 = [3.2409699419, -1.5373831776, -0.4986107603,
135 -0.9692436363, 1.8759675015, 0.0415550574,
136 0.0556300797, -0.2039769589, 1.0569715142]
138 cs = create_generic_matrix(
140 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_Rec709],
141 aliases=["lin_rec709"])
142 colorspaces.append(cs)
144 # *ACES* to *Linear*, *Rec. 2020* primaries.
145 XYZ_to_Rec2020 = [1.7166511880, -0.3556707838, -0.2533662814,
146 -0.6666843518, 1.6164812366, 0.0157685458,
147 0.0176398574, -0.0427706133, 0.9421031212]
149 cs = create_generic_matrix(
151 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_Rec2020],
152 aliases=["lin_rec2020"])
153 colorspaces.append(cs)
155 # *ACES* to *Linear*, *Pro Photo* primaries.
156 AP0_to_RIMM = [1.2412367771, -0.1685692287, -0.0726675484,
157 0.0061203066, 1.083151174, -0.0892714806,
158 -0.0032853314, 0.0099796402, 0.9933056912]
160 cs = create_generic_matrix(
161 'Linear - RIMM ROMM (ProPhoto)',
162 from_reference_values=[AP0_to_RIMM],
163 aliases=["lin_prophoto", "lin_rimm"])
164 colorspaces.append(cs)
166 # *ACES* to *Linear*, *Adobe RGB* primaries.
167 AP0_to_ADOBERGB = [1.7245603168, -0.4199935942, -0.3045667227,
168 -0.2764799142, 1.3727190877, -0.0962391734,
169 -0.0261255258, -0.0901747807, 1.1163003065]
171 cs = create_generic_matrix(
172 'Linear - Adobe RGB',
173 from_reference_values=[AP0_to_ADOBERGB],
174 aliases=["lin_adobergb"])
175 colorspaces.append(cs)
177 # *ACES* to *Linear*, *Adobe Wide Gamut RGB* primaries.
178 AP0_to_ADOBERGB = [1.3809814778, -0.1158594573, -0.2651220205,
179 0.0057015535, 1.0402949043, -0.0459964578,
180 -0.0038908746, -0.0597091815, 1.0636000561]
182 cs = create_generic_matrix(
183 'Linear - Adobe Wide Gamut RGB',
184 from_reference_values=[AP0_to_ADOBERGB],
185 aliases=["lin_adobewidegamutrgb"])
186 colorspaces.append(cs)