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 from aces_ocio.colorspaces import 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',
26 # -------------------------------------------------------------------------
27 # *Simple Matrix Transform*
28 # -------------------------------------------------------------------------
29 def create_generic_matrix(name='matrix',
30 from_reference_values=None,
31 to_reference_values=None,
39 Parameter description.
44 Return value description.
47 if from_reference_values is None:
48 from_reference_values = []
50 if to_reference_values is None:
51 to_reference_values = []
54 cs.description = 'The %s color space' % name
56 cs.equality_group = name
60 # A linear space needs allocation variables
61 cs.allocation_type = ocio.Constants.ALLOCATION_LG2
62 cs.allocation_vars = [-8, 5, 0.00390625]
64 cs.to_reference_transforms = []
65 if to_reference_values:
66 for matrix in to_reference_values:
67 cs.to_reference_transforms.append({
69 'matrix': mat44_from_mat33(matrix),
70 'direction': 'forward'})
72 cs.from_reference_transforms = []
73 if from_reference_values:
74 for matrix in from_reference_values:
75 cs.from_reference_transforms.append({
77 'matrix': mat44_from_mat33(matrix),
78 'direction': 'forward'})
83 def create_colorspaces(lut_directory,
87 Generates the colorspace conversions.
92 Parameter description.
97 Return value description.
102 cs = create_generic_matrix('XYZ',
103 to_reference_values=[aces.ACES_XYZ_TO_AP0],
104 from_reference_values=[aces.ACES_AP0_TO_XYZ],
106 colorspaces.append(cs)
108 cs = create_generic_matrix(
110 to_reference_values=[aces.ACES_AP1_TO_AP0],
111 from_reference_values=[aces.ACES_AP0_TO_AP1],
113 colorspaces.append(cs)
115 # *ACES* to *Linear*, *P3D60* primaries.
116 XYZ_to_P3D60 = [2.4027414142, -0.8974841639, -0.3880533700,
117 -0.8325796487, 1.7692317536, 0.0237127115,
118 0.0388233815, -0.0824996856, 1.0363685997]
120 cs = create_generic_matrix(
122 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_P3D60],
123 aliases=["lin_p3d60"])
124 colorspaces.append(cs)
126 # *ACES* to *Linear*, *P3DCI* primaries.
127 XYZ_to_P3DCI = [2.7253940305, -1.0180030062, -0.4401631952,
128 -0.7951680258, 1.6897320548, 0.0226471906,
129 0.0412418914, -0.0876390192, 1.1009293786]
131 cs = create_generic_matrix(
133 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_P3DCI],
134 aliases=["lin_p3dci"])
135 colorspaces.append(cs)
137 # *ACES* to *Linear*, *Rec. 709* primaries.
138 XYZ_to_Rec709 = [3.2409699419, -1.5373831776, -0.4986107603,
139 -0.9692436363, 1.8759675015, 0.0415550574,
140 0.0556300797, -0.2039769589, 1.0569715142]
142 cs = create_generic_matrix(
144 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_Rec709],
145 aliases=["lin_rec709"])
146 colorspaces.append(cs)
148 # *ACES* to *Linear*, *Rec. 2020* primaries.
149 XYZ_to_Rec2020 = [1.7166511880, -0.3556707838, -0.2533662814,
150 -0.6666843518, 1.6164812366, 0.0157685458,
151 0.0176398574, -0.0427706133, 0.9421031212]
153 cs = create_generic_matrix(
155 from_reference_values=[aces.ACES_AP0_TO_XYZ, XYZ_to_Rec2020],
156 aliases=["lin_rec2020"])
157 colorspaces.append(cs)
159 # *ACES* to *Linear*, *Pro Photo* primaries.
160 AP0_to_RIMM = [1.2412367771, -0.1685692287, -0.0726675484,
161 0.0061203066, 1.083151174, -0.0892714806,
162 -0.0032853314, 0.0099796402, 0.9933056912]
164 cs = create_generic_matrix(
165 'Linear - RIMM ROMM (ProPhoto)',
166 from_reference_values=[AP0_to_RIMM],
167 aliases=["lin_prophoto", "lin_rimm"])
168 colorspaces.append(cs)
170 # *ACES* to *Linear*, *Adobe RGB* primaries.
171 AP0_to_ADOBERGB = [1.7245603168, -0.4199935942, -0.3045667227,
172 -0.2764799142, 1.3727190877, -0.0962391734,
173 -0.0261255258, -0.0901747807, 1.1163003065]
175 cs = create_generic_matrix(
176 'Linear - Adobe RGB',
177 from_reference_values=[AP0_to_ADOBERGB],
178 aliases=["lin_adobergb"])
179 colorspaces.append(cs)
182 # *ACES* to *Linear*, *Adobe Wide Gamut RGB* primaries.
183 AP0_to_ADOBERGB = [1.3809814778, -0.1158594573, -0.2651220205,
184 0.0057015535, 1.0402949043, -0.0459964578,
185 -0.0038908746, -0.0597091815, 1.0636000561]
187 cs = create_generic_matrix(
188 'Linear - Adobe Wide Gamut RGB',
189 from_reference_values=[AP0_to_ADOBERGB],
190 aliases=["lin_adobewidegamutrgb"])
191 colorspaces.append(cs)
197 # *Raw* utility space
199 raw = ColorSpace(name)
200 raw.description = 'The %s color space' % name
202 raw.equality_group = name
203 raw.family = 'Utility'