+++ /dev/null
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-"""
-Implements support for *ACES* colorspaces conversions and transfer functions.
-"""
-
-from __future__ import division
-
-import copy
-import math
-import numpy
-import os
-import pprint
-import string
-import shutil
-
-import PyOpenColorIO as ocio
-
-from aces_ocio.generate_lut import (
- generate_1d_LUT_from_CTL,
- generate_3d_LUT_from_CTL,
- write_SPI_1d)
-from aces_ocio.utilities import (
- ColorSpace,
- mat44_from_mat33,
- sanitize,
- compact)
-
-__author__ = 'ACES Developers'
-__copyright__ = 'Copyright (C) 2014 - 2015 - ACES Developers'
-__license__ = ''
-__maintainer__ = 'ACES Developers'
-__email__ = 'aces@oscars.org'
-__status__ = 'Production'
-
-__all__ = ['ACES_AP1_TO_AP0',
- 'ACES_AP0_TO_AP1',
- 'ACES_AP0_TO_XYZ',
- 'ACES_XYZ_TO_AP0',
- 'create_ACES',
- 'create_ACEScc',
- 'create_ACESproxy',
- 'create_ACEScg',
- 'create_ADX',
- 'create_generic_log',
- 'create_Dolby_PQ',
- 'create_Dolby_PQ_shaper',
- 'create_ACES_LMT',
- 'create_LMTs',
- 'create_ACES_RRT_plus_ODT',
- 'create_ODTs',
- 'create_shapers_dolbypq'
- 'create_shapers_log2',
- 'create_shapers',
- 'get_transform_info',
- 'get_ODTs_info',
- 'get_LMTs_info',
- 'create_colorspaces']
-
-# Matrix converting *ACES AP1* primaries to *ACES AP0*.
-ACES_AP1_TO_AP0 = [0.6954522414, 0.1406786965, 0.1638690622,
- 0.0447945634, 0.8596711185, 0.0955343182,
- -0.0055258826, 0.0040252103, 1.0015006723]
-
-# Matrix converting *ACES AP0* primaries to *ACES AP1*.
-ACES_AP0_TO_AP1 = [1.4514393161, -0.2365107469, -0.2149285693,
- -0.0765537734, 1.1762296998, -0.0996759264,
- 0.0083161484, -0.0060324498, 0.9977163014]
-
-# Matrix converting *ACES AP0* primaries to *XYZ*.
-ACES_AP0_TO_XYZ = [0.9525523959, 0.0000000000, 0.0000936786,
- 0.3439664498, 0.7281660966, -0.0721325464,
- 0.0000000000, 0.0000000000, 1.0088251844]
-
-# Matrix converting *ACES AP0* primaries to *XYZ*.
-ACES_XYZ_TO_AP0 = [1.0498110175, 0.0000000000, -0.0000974845,
- -0.4959030231, 1.3733130458, 0.0982400361,
- 0.0000000000, 0.0000000000, 0.9912520182]
-
-
-def create_ACES():
- """
- Creates the *ACES2065-1* reference color space
-
- Parameters
- ----------
- None
-
- Returns
- -------
- ColorSpace
- *ACES2065-1* and all its identifying information
- """
-
- # Defining the reference colorspace.
- aces2065_1 = ColorSpace('ACES2065-1')
- aces2065_1.description = (
- 'The Academy Color Encoding System reference color space')
- aces2065_1.equality_group = ''
- aces2065_1.aliases = ['lin_ap0', 'aces']
- aces2065_1.family = 'ACES'
- aces2065_1.is_data = False
- aces2065_1.allocation_type = ocio.Constants.ALLOCATION_LG2
- aces2065_1.allocation_vars = [-8, 5, 0.00390625]
-
- return aces2065_1
-
-
-def create_ACEScc(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name='ACEScc',
- min_value=0,
- max_value=1,
- input_scale=1):
- """
- Creates the *ACEScc* reference color space
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- name : str or unicode, optional
- The name of the ColorSpace
- min_value : float, optional
- The minimum value to consider for the space
- max_value : float, optional
- The maximum value to consider for the space
- input_scale : float, optional
- A scale factor to divide input values
-
- Returns
- -------
- ColorSpace
- *ACEScc* and all its identifying information
- """
-
- cs = ColorSpace(name)
- cs.description = 'The %s color space' % name
- cs.aliases = ['acescc', 'acescc_ap1']
- cs.equality_group = ''
- cs.family = 'ACES'
- cs.is_data = False
- cs.allocation_type = ocio.Constants.ALLOCATION_UNIFORM
- cs.allocation_vars = [min_value, max_value]
- cs.aces_transform_id = 'ACEScsc.ACEScc_to_ACES.a1.0.1'
-
- ctls = [os.path.join(aces_ctl_directory,
- 'ACEScc',
- 'ACEScsc.ACEScc_to_ACES.a1.0.1.ctl'),
- # This transform gets back to the *AP1* primaries.
- # Useful as the 1d LUT is only covering the transfer function.
- # The primaries switch is covered by the matrix below:
- os.path.join(aces_ctl_directory,
- 'ACEScg',
- 'ACEScsc.ACES_to_ACEScg.a1.0.1.ctl')]
- lut = '%s_to_linear.spi1d' % name
-
- lut = sanitize(lut)
-
- generate_1d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_1d,
- 'float',
- input_scale,
- 1,
- {},
- cleanup,
- aces_ctl_directory,
- min_value,
- max_value,
- 1)
-
- cs.to_reference_transforms = []
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'linear',
- 'direction': 'forward'})
-
- # *AP1* primaries to *AP0* primaries
- cs.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': mat44_from_mat33(ACES_AP1_TO_AP0),
- 'direction': 'forward'})
-
- cs.from_reference_transforms = []
- return cs
-
-
-def create_ACESproxy(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name='ACESproxy'):
- """
- Creates the *ACESproxy* color space
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- name : str or unicode, optional
- The name of the ColorSpace
-
- Returns
- -------
- ColorSpace
- *ACESproxy* and all its identifying information
- """
-
- cs = ColorSpace(name)
- cs.description = 'The %s color space' % name
- cs.aliases = ['acesproxy', 'acesproxy_ap1']
- cs.equality_group = ''
- cs.family = 'ACES'
- cs.is_data = False
-
- cs.aces_transform_id = 'ACEScsc.ACESproxy10i_to_ACES.a1.0.1'
-
- ctls = [os.path.join(aces_ctl_directory,
- 'ACESproxy',
- 'ACEScsc.ACESproxy10i_to_ACES.a1.0.1.ctl'),
- # This transform gets back to the *AP1* primaries.
- # Useful as the 1d LUT is only covering the transfer function.
- # The primaries switch is covered by the matrix below:
- os.path.join(aces_ctl_directory,
- 'ACEScg',
- 'ACEScsc.ACES_to_ACEScg.a1.0.1.ctl')]
- lut = '%s_to_linear.spi1d' % name
-
- lut = sanitize(lut)
-
- generate_1d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_1d,
- 'float',
- 1,
- 1,
- {},
- cleanup,
- aces_ctl_directory,
- 0,
- 1,
- 1)
-
- cs.to_reference_transforms = []
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'linear',
- 'direction': 'forward'})
-
- # *AP1* primaries to *AP0* primaries
- cs.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': mat44_from_mat33(ACES_AP1_TO_AP0),
- 'direction': 'forward'})
-
- cs.from_reference_transforms = []
- return cs
-
-
-# -------------------------------------------------------------------------
-# *ACEScg*
-# -------------------------------------------------------------------------
-def create_ACEScg():
- """
- Creates the *ACEScg* color space
-
- Parameters
- ----------
- None
-
- Returns
- -------
- ColorSpace
- *ACEScg* and all its identifying information
- """
-
- name = 'ACEScg'
-
- cs = ColorSpace(name)
- cs.description = 'The %s color space' % name
- cs.aliases = ['acescg', 'lin_ap1']
- cs.equality_group = ''
- cs.family = 'ACES'
- cs.is_data = False
- cs.allocation_type = ocio.Constants.ALLOCATION_LG2
- cs.allocation_vars = [-8, 5, 0.00390625]
-
- cs.aces_transform_id = 'ACEScsc.ACEScg_to_ACES.a1.0.1'
-
- cs.to_reference_transforms = []
-
- # *AP1* primaries to *AP0* primaries
- cs.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': mat44_from_mat33(ACES_AP1_TO_AP0),
- 'direction': 'forward'})
-
- cs.from_reference_transforms = []
-
- # Commented out because specifying the inverse matrix causes some
- # of OCIO's checks to see if a set of transforms can be collapsed
- # to fail.
-
- # *AP1* primaries to *AP0* primaries
- #cs.from_reference_transforms.append({
- # 'type': 'matrix',
- # 'matrix': mat44_from_mat33(ACES_AP0_TO_AP1),
- # 'direction': 'forward'})
-
- return cs
-
-
-# -------------------------------------------------------------------------
-# *ADX*
-# -------------------------------------------------------------------------
-def create_ADX(lut_directory,
- bit_depth=10,
- name='ADX'):
- """
- Creates the *ADX* color space
-
- Parameters
- ----------
- lut_directory : str or unicode
- The directory to use when generating LUTs
- bit_depth : int
- Choose either 10 or 16 bit ADX
- name : str or unicode, optional
- The name of the ColorSpace
-
- Returns
- -------
- ColorSpace
- *ADX* and all its identifying information
- """
-
- name = '%s%s' % (name, bit_depth)
- cs = ColorSpace(name)
- cs.description = '%s color space - used for film scans' % name
- cs.aliases = ['adx%s' % str(bit_depth)]
- cs.equality_group = ''
- cs.family = 'ADX'
- cs.is_data = False
-
- if bit_depth == 10:
- cs.aces_transform_id = 'ACEScsc.ADX10_to_ACES.a1.0.1'
-
- cs.bit_depth = ocio.Constants.BIT_DEPTH_UINT10
- ADX_to_CDD = [1023 / 500, 0, 0, 0,
- 0, 1023 / 500, 0, 0,
- 0, 0, 1023 / 500, 0,
- 0, 0, 0, 1]
- offset = [-95 / 500, -95 / 500, -95 / 500, 0]
- elif bit_depth == 16:
- cs.aces_transform_id = 'ACEScsc.ADX16_to_ACES.a1.0.1'
-
- cs.bit_depth = ocio.Constants.BIT_DEPTH_UINT16
- ADX_to_CDD = [65535 / 8000, 0, 0, 0,
- 0, 65535 / 8000, 0, 0,
- 0, 0, 65535 / 8000, 0,
- 0, 0, 0, 1]
- offset = [-1520 / 8000, -1520 / 8000, -1520 / 8000, 0]
-
- cs.to_reference_transforms = []
-
- # Converting from *ADX* to *Channel-Dependent Density*.
- cs.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': ADX_to_CDD,
- 'offset': offset,
- 'direction': 'forward'})
-
- # Converting from *Channel-Dependent Density* to
- # *Channel-Independent Density*.
- cs.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': [0.75573, 0.22197, 0.02230, 0,
- 0.05901, 0.96928, -0.02829, 0,
- 0.16134, 0.07406, 0.76460, 0,
- 0, 0, 0, 1],
- 'direction': 'forward'})
-
- # Copied from *Alex Fry*'s *adx_cid_to_rle.py*
- def create_CID_to_RLE_LUT():
-
- def interpolate_1d(x, xp, fp):
- return numpy.interp(x, xp, fp)
-
- LUT_1D_XP = [-0.190000000000000,
- 0.010000000000000,
- 0.028000000000000,
- 0.054000000000000,
- 0.095000000000000,
- 0.145000000000000,
- 0.220000000000000,
- 0.300000000000000,
- 0.400000000000000,
- 0.500000000000000,
- 0.600000000000000]
-
- LUT_1D_FP = [-6.000000000000000,
- -2.721718645000000,
- -2.521718645000000,
- -2.321718645000000,
- -2.121718645000000,
- -1.921718645000000,
- -1.721718645000000,
- -1.521718645000000,
- -1.321718645000000,
- -1.121718645000000,
- -0.926545676714876]
-
- REF_PT = ((7120 - 1520) / 8000 * (100 / 55) -
- math.log(0.18, 10))
-
- def cid_to_rle(x):
- if x <= 0.6:
- return interpolate_1d(x, LUT_1D_XP, LUT_1D_FP)
- return (100 / 55) * x - REF_PT
-
- def fit(value, from_min, from_max, to_min, to_max):
- if from_min == from_max:
- raise ValueError('from_min == from_max')
- return (value - from_min) / (from_max - from_min) * (
- to_max - to_min) + to_min
-
- num_samples = 2 ** 12
- domain = (-0.19, 3)
- data = []
- for i in xrange(num_samples):
- x = i / (num_samples - 1)
- x = fit(x, 0, 1, domain[0], domain[1])
- data.append(cid_to_rle(x))
-
- lut = 'ADX_CID_to_RLE.spi1d'
- write_SPI_1d(os.path.join(lut_directory, lut),
- domain[0],
- domain[1],
- data,
- num_samples, 1)
-
- return lut
-
- # Converting *Channel Independent Density* values to
- # *Relative Log Exposure* values.
- lut = create_CID_to_RLE_LUT()
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'linear',
- 'direction': 'forward'})
-
- # Converting *Relative Log Exposure* values to
- # *Relative Exposure* values.
- cs.to_reference_transforms.append({
- 'type': 'log',
- 'base': 10,
- 'direction': 'inverse'})
-
- # Convert *Relative Exposure* values to *ACES* values.
- cs.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': [0.72286, 0.12630, 0.15084, 0,
- 0.11923, 0.76418, 0.11659, 0,
- 0.01427, 0.08213, 0.90359, 0,
- 0, 0, 0, 1],
- 'direction': 'forward'})
-
- cs.from_reference_transforms = []
- return cs
-
-
-# -------------------------------------------------------------------------
-# Generic *Log* Transform
-# -------------------------------------------------------------------------
-def create_generic_log(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name='log',
- aliases=None,
- min_value=0,
- max_value=1,
- input_scale=1,
- middle_grey=0.18,
- min_exposure=-6.5,
- max_exposure=6.5):
- """
- Creates the *Generic Log* colorspace.
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- name : str or unicode, optional
- The name of the ColorSpace
- aliases : list of str or unicode, optional
- The alias names to use for the ColorSpace
- min_value : float, optional
- The minimum value to consider for the space
- max_value : float, optional
- The maximum value to consider for the space
- input_scale : float, optional
- A scale factor to divide input values
- middle_grey : float, optional
- The middle of the dynamic range covered by the transfer function
- min_exposure : float, optional
- The offset from middle grey, in stops, that defines the low end of the dynamic
- range covered by the transfer function
- max_exposure : float, optional
- The offset from middle grey, in stops, that defines the high end of the dynamic
- range covered by the transfer function
-
- Returns
- -------
- ColorSpace
- *Generic Log* colorspace.
- """
-
- if aliases is None:
- aliases = []
-
- cs = ColorSpace(name)
- cs.description = 'The %s color space' % name
- cs.aliases = aliases
- cs.equality_group = name
- cs.family = 'Utility'
- cs.is_data = False
-
- ctls = [os.path.join(
- aces_ctl_directory,
- 'utilities',
- 'ACESlib.Log2_to_Lin_param.a1.0.1.ctl')]
- lut = '%s_to_linear.spi1d' % name
-
- lut = sanitize(lut)
-
- generate_1d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_1d,
- 'float',
- input_scale,
- 1,
- {'middleGrey': middle_grey,
- 'minExposure': min_exposure,
- 'maxExposure': max_exposure},
- cleanup,
- aces_ctl_directory,
- min_value,
- max_value,
- 1)
-
- cs.to_reference_transforms = []
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'linear',
- 'direction': 'forward'})
-
- cs.from_reference_transforms = []
- return cs
-
-
-# -------------------------------------------------------------------------
-# Base *Dolby PQ* Transform
-# -------------------------------------------------------------------------
-def create_Dolby_PQ(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name='pq',
- aliases=None,
- min_value=0.0,
- max_value=1.0,
- input_scale=1.0):
- """
- Creates the generic *Dolby PQ* colorspace.
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- name : str or unicode, optional
- The name of the ColorSpace
- aliases : list of str or unicode, optional
- The alias names to use for the ColorSpace
- min_value : float, optional
- The minimum value to consider for the space
- max_value : float, optional
- The maximum value to consider for the space
- input_scale : float, optional
- A scale factor to divide input values
-
- Returns
- -------
- ColorSpace
- Generic *Dolby PQ* colorspace.
- """
-
- if aliases is None:
- aliases = []
-
- cs = ColorSpace(name)
- cs.description = 'The %s color space' % name
- cs.aliases = aliases
- cs.equality_group = name
- cs.family = 'Utility'
- cs.is_data = False
-
- ctls = [os.path.join(
- aces_ctl_directory,
- 'utilities',
- 'ACESlib.DolbyPQ_to_Lin.a1.0.1.ctl')]
- lut = '%s_to_linear.spi1d' % name
-
- lut = sanitize(lut)
-
- generate_1d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_1d,
- 'float',
- input_scale,
- 1.0,
- {},
- cleanup,
- aces_ctl_directory,
- min_value,
- max_value)
-
- cs.to_reference_transforms = []
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'linear',
- 'direction': 'forward'})
-
- cs.from_reference_transforms = []
- return cs
-
-
-# -------------------------------------------------------------------------
-# *Dolby PQ* Transform - Fixed Linear Range
-# -------------------------------------------------------------------------
-def create_Dolby_PQ_shaper(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name='pq',
- aliases=None,
- min_value=0.0,
- max_value=1.0,
- input_scale=1.0,
- middle_grey=0.18,
- min_exposure=-6.5,
- max_exposure=6.5):
- """
- Creates a *Dolby PQ* colorspace that covers a specific dynamic range
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- name : str or unicode, optional
- The name of the ColorSpace
- aliases : list of str or unicode, optional
- The alias names to use for the ColorSpace
- min_value : float, optional
- The minimum value to consider for the space
- max_value : float, optional
- The maximum value to consider for the space
- input_scale : float, optional
- A scale factor to divide input values
- middle_grey : float, optional
- The middle of the dynamic range covered by the transfer function
- min_exposure : float, optional
- The offset from middle grey, in stops, that defines the low end of the dynamic
- range covered by the transfer function
- max_exposure : float, optional
- The offset from middle grey, in stops, that defines the high end of the dynamic
- range covered by the transfer function
-
- Returns
- -------
- ColorSpace
- A *Dolby PQ* colorspace that covers a specific dynamic range
- """
-
- if aliases is None:
- aliases = []
-
- cs = ColorSpace(name)
- cs.description = 'The %s color space' % name
- cs.aliases = aliases
- cs.equality_group = name
- cs.family = 'Utility'
- cs.is_data = False
-
- ctls = [os.path.join(
- aces_ctl_directory,
- 'utilities',
- 'ACESlib.OCIOshaper_to_Lin_param.a1.0.1.ctl')]
- lut = '%s_to_linear.spi1d' % name
-
- lut = sanitize(lut)
-
- generate_1d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_1d,
- 'float',
- input_scale,
- 1.0,
- {'middleGrey': middle_grey,
- 'minExposure': min_exposure,
- 'maxExposure': max_exposure},
- cleanup,
- aces_ctl_directory,
- min_value,
- max_value)
-
- cs.to_reference_transforms = []
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'linear',
- 'direction': 'forward'})
-
- cs.from_reference_transforms = []
- return cs
-
-
-# -------------------------------------------------------------------------
-# Individual *LMT*
-# -------------------------------------------------------------------------
-def create_ACES_LMT(lmt_name,
- lmt_values,
- shaper_info,
- aces_ctl_directory,
- lut_directory,
- lut_resolution_3d=64,
- cleanup=True,
- aliases=None):
- """
- Creates an *ACES Look Transform (LMT)* colorspace.
-
- Parameters
- ----------
- lmt_name : str or unicode
- The name of the Look Transform (LMT)
- lmt_values : dict
- A collection of values that define the Look Transform's attributes and behavior
- shaper_info : dict
- A collection of values that define the Shaper to use when generating LUTs to
- represent the Look Transform
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_3d : int, optional
- The resolution of generated 3D LUTs
- cleanup : bool, optional
- Whether or not to clean up the intermediate images
- aliases : list of str or unicode, optional
- The alias names to use for the ColorSpace
-
- Returns
- -------
- ColorSpace
- An *ACES LMT* colorspace.
- """
-
- if aliases is None:
- aliases = []
-
- cs = ColorSpace('%s' % lmt_name)
- cs.description = 'The ACES Look Transform: %s' % lmt_name
- cs.aliases = aliases
- cs.equality_group = ''
- cs.family = 'Look'
- cs.is_data = False
- cs.allocation_type = ocio.Constants.ALLOCATION_LG2
- cs.allocation_vars = [-8, 5, 0.00390625]
- cs.aces_transform_id = lmt_values['transformID']
-
- pprint.pprint(lmt_values)
-
- # Generating the *shaper* transform.
- (shaper_name,
- shaper_to_aces_ctl,
- shaper_from_aces_ctl,
- shaper_input_scale,
- shaper_params) = shaper_info
-
- shaper_lut = '%s_to_linear.spi1d' % shaper_name
- shaper_lut = sanitize(shaper_lut)
-
- shaper_ocio_transform = {
- 'type': 'lutFile',
- 'path': shaper_lut,
- 'interpolation': 'linear',
- 'direction': 'inverse'}
-
- # Generating the forward transform.
- cs.from_reference_transforms = []
-
- if 'transformCTL' in lmt_values:
- ctls = [shaper_to_aces_ctl % aces_ctl_directory,
- os.path.join(aces_ctl_directory,
- lmt_values['transformCTL'])]
- lut = '%s.%s.spi3d' % (shaper_name, lmt_name)
-
- lut = sanitize(lut)
-
- generate_3d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_3d,
- 'float',
- 1 / shaper_input_scale,
- 1,
- shaper_params,
- cleanup,
- aces_ctl_directory)
-
- cs.from_reference_transforms.append(shaper_ocio_transform)
- cs.from_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'tetrahedral',
- 'direction': 'forward'})
-
- # Generating the inverse transform.
- cs.to_reference_transforms = []
-
- if 'transformCTLInverse' in lmt_values:
- ctls = [os.path.join(aces_ctl_directory,
- lmt_values['transformCTLInverse']),
- shaper_from_aces_ctl % aces_ctl_directory]
- lut = 'Inverse.%s.%s.spi3d' % (lmt_name, shaper_name)
-
- lut = sanitize(lut)
-
- generate_3d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_3d,
- 'half',
- 1,
- shaper_input_scale,
- shaper_params,
- cleanup,
- aces_ctl_directory,
- 0)
-
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'tetrahedral',
- 'direction': 'forward'})
-
- shaper_inverse = shaper_ocio_transform.copy()
- shaper_inverse['direction'] = 'forward'
- cs.to_reference_transforms.append(shaper_inverse)
-
- return cs
-
-
-# -------------------------------------------------------------------------
-# *LMTs*
-# -------------------------------------------------------------------------
-def create_LMTs(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- lut_resolution_3d,
- lmt_info,
- cleanup):
- """
- Create ColorSpaces representing the *ACES Look Transforms*
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- lut_resolution_3d : int
- The resolution of generated 3D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- aliases : list of str or unicode, optional
- The alias names to use for the ColorSpace
- lmt_info : dict
- A collection of values that define the Look Transforms that need to be
- generated
-
- Returns
- -------
- list of ColorSpaces
- ColorSpaces representing the *ACES Look Transforms*
- """
-
- colorspaces = []
-
- # -------------------------------------------------------------------------
- # *LMT Shaper*
- # -------------------------------------------------------------------------
- lmt_lut_resolution_1d = max(4096, lut_resolution_1d)
- lmt_lut_resolution_3d = max(65, lut_resolution_3d)
-
- # Defining the *Log 2* shaper.
- lmt_shaper_name = 'LMT Shaper'
- lmt_shaper_name_aliases = ['crv_lmtshaper']
- lmt_params = {
- 'middleGrey': 0.18,
- 'minExposure': -10,
- 'maxExposure': 6.5}
-
- lmt_shaper = create_generic_log(aces_ctl_directory,
- lut_directory,
- lmt_lut_resolution_1d,
- cleanup,
- name=lmt_shaper_name,
- middle_grey=lmt_params['middleGrey'],
- min_exposure=lmt_params['minExposure'],
- max_exposure=lmt_params['maxExposure'],
- aliases=lmt_shaper_name_aliases)
- colorspaces.append(lmt_shaper)
-
- shaper_input_scale_generic_log2 = 1
-
- # *Log 2* shaper name and *CTL* transforms bundled up.
- lmt_shaper_data = [
- lmt_shaper_name,
- os.path.join('%s',
- 'utilities',
- 'ACESlib.Log2_to_Lin_param.a1.0.1.ctl'),
- os.path.join('%s',
- 'utilities',
- 'ACESlib.Lin_to_Log2_param.a1.0.1.ctl'),
- shaper_input_scale_generic_log2,
- lmt_params]
-
- sorted_lmts = sorted(lmt_info.iteritems(), key=lambda x: x[1])
- print(sorted_lmts)
- for lmt in sorted_lmts:
- lmt_name, lmt_values = lmt
- lmt_aliases = ['look_%s' % compact(lmt_values['transformUserName'])]
- cs = create_ACES_LMT(
- lmt_values['transformUserName'],
- lmt_values,
- lmt_shaper_data,
- aces_ctl_directory,
- lut_directory,
- lmt_lut_resolution_3d,
- cleanup,
- lmt_aliases)
- colorspaces.append(cs)
-
- return colorspaces
-
-
-# -------------------------------------------------------------------------
-# *ACES RRT* with supplied *ODT*.
-# -------------------------------------------------------------------------
-def create_ACES_RRT_plus_ODT(odt_name,
- odt_values,
- shaper_info,
- aces_ctl_directory,
- lut_directory,
- lut_resolution_3d=64,
- cleanup=True,
- aliases=None):
- """
- Creates an *ACES Output Transform (RRT + ODT)* colorspace.
-
- Parameters
- ----------
- odt_name : str or unicode
- The name of the Output Transform (RRT + ODT)
- odt_values : dict
- A collection of values that define the Output Transform's attributes and behavior
- shaper_info : dict
- A collection of values that define the Shaper to use when generating LUTs to
- represent the Output Transform
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_3d : int, optional
- The resolution of generated 3D LUTs
- cleanup : bool, optional
- Whether or not to clean up the intermediate images
- aliases : list of str or unicode, optional
- The alias names to use for the ColorSpace
-
- Returns
- -------
- ColorSpace
- An *ACES Output Transform (RRT + ODT)* colorspace.
- """
-
- if aliases is None:
- aliases = []
-
- cs = ColorSpace('%s' % odt_name)
- cs.description = '%s - %s Output Transform' % (
- odt_values['transformUserNamePrefix'], odt_name)
- cs.aliases = aliases
- cs.equality_group = ''
- cs.family = 'Output'
- cs.is_data = False
-
- cs.aces_transform_id = odt_values['transformID']
-
- pprint.pprint(odt_values)
-
- # Generating the *shaper* transform.
- (shaper_name,
- shaper_to_aces_ctl,
- shaper_from_aces_ctl,
- shaper_input_scale,
- shaper_params) = shaper_info
-
- if 'legalRange' in odt_values:
- shaper_params['legalRange'] = odt_values['legalRange']
- else:
- shaper_params['legalRange'] = 0
-
- shaper_lut = '%s_to_linear.spi1d' % shaper_name
- shaper_lut = sanitize(shaper_lut)
-
- shaper_ocio_transform = {
- 'type': 'lutFile',
- 'path': shaper_lut,
- 'interpolation': 'linear',
- 'direction': 'inverse'}
-
- # Generating the *forward* transform.
- cs.from_reference_transforms = []
-
- if 'transformLUT' in odt_values:
- transform_lut_file_name = os.path.basename(
- odt_values['transformLUT'])
- lut = os.path.join(lut_directory, transform_lut_file_name)
- shutil.copy(odt_values['transformLUT'], lut)
-
- cs.from_reference_transforms.append(shaper_ocio_transform)
- cs.from_reference_transforms.append({
- 'type': 'lutFile',
- 'path': transform_lut_file_name,
- 'interpolation': 'tetrahedral',
- 'direction': 'forward'})
- elif 'transformCTL' in odt_values:
- ctls = [
- shaper_to_aces_ctl % aces_ctl_directory,
- os.path.join(aces_ctl_directory,
- 'rrt',
- 'RRT.a1.0.1.ctl'),
- os.path.join(aces_ctl_directory,
- 'odt',
- odt_values['transformCTL'])]
- lut = '%s.RRT.a1.0.1.%s.spi3d' % (shaper_name, odt_name)
-
- lut = sanitize(lut)
-
- generate_3d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_3d,
- 'float',
- 1 / shaper_input_scale,
- 1,
- shaper_params,
- cleanup,
- aces_ctl_directory)
-
- cs.from_reference_transforms.append(shaper_ocio_transform)
- cs.from_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'tetrahedral',
- 'direction': 'forward'})
-
- # Generating the *inverse* transform.
- cs.to_reference_transforms = []
-
- if 'transformLUTInverse' in odt_values:
- transform_lut_inverse_file_name = os.path.basename(
- odt_values['transformLUTInverse'])
- lut = os.path.join(lut_directory, transform_lut_inverse_file_name)
- shutil.copy(odt_values['transformLUTInverse'], lut)
-
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': transform_lut_inverse_file_name,
- 'interpolation': 'tetrahedral',
- 'direction': 'forward'})
-
- shaper_inverse = shaper_ocio_transform.copy()
- shaper_inverse['direction'] = 'forward'
- cs.to_reference_transforms.append(shaper_inverse)
- elif 'transformCTLInverse' in odt_values:
- ctls = [os.path.join(aces_ctl_directory,
- 'odt',
- odt_values['transformCTLInverse']),
- os.path.join(aces_ctl_directory,
- 'rrt',
- 'InvRRT.a1.0.1.ctl'),
- shaper_from_aces_ctl % aces_ctl_directory]
- lut = 'InvRRT.a1.0.1.%s.%s.spi3d' % (odt_name, shaper_name)
-
- lut = sanitize(lut)
-
- generate_3d_LUT_from_CTL(
- os.path.join(lut_directory, lut),
- ctls,
- lut_resolution_3d,
- 'half',
- 1,
- shaper_input_scale,
- shaper_params,
- cleanup,
- aces_ctl_directory)
-
- cs.to_reference_transforms.append({
- 'type': 'lutFile',
- 'path': lut,
- 'interpolation': 'tetrahedral',
- 'direction': 'forward'})
-
- shaper_inverse = shaper_ocio_transform.copy()
- shaper_inverse['direction'] = 'forward'
- cs.to_reference_transforms.append(shaper_inverse)
-
- return cs
-
-# -------------------------------------------------------------------------
-# *Log 2 Shapers*
-# -------------------------------------------------------------------------
-def create_shapers_log2(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- shaper_name,
- middle_grey,
- min_exposure,
- max_exposure):
- """
- Creates a *Log base 2* colorspace that covers a specific dynamic range
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- shaper_name : str or unicode, optional
- The name of the ColorSpace
- middle_grey : float
- The middle of the dynamic range covered by the transfer function
- min_exposure : float
- The offset from middle grey, in stops, that defines the low end of the dynamic
- range covered by the transfer function
- max_exposure : float
- The offset from middle grey, in stops, that defines the high end of the dynamic
- range covered by the transfer function
-
- Returns
- -------
- ColorSpace
- A *Log base 2* colorspace that covers a specific dynamic range
- """
-
- colorspaces = []
- shaper_data = {}
-
- # Defining the *Log 2* shaper for *ODTs covering 48 nit output*.
- log2_shaper_name = shaper_name
- log2_shaper_name_aliases = ['crv_%s' % compact(log2_shaper_name)]
- log2_params = {
- 'middleGrey': middle_grey,
- 'minExposure': min_exposure,
- 'maxExposure': max_exposure}
-
- log2_shaper_colorspace = create_generic_log(
- aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name=log2_shaper_name,
- middle_grey=log2_params['middleGrey'],
- min_exposure=log2_params['minExposure'],
- max_exposure=log2_params['maxExposure'],
- aliases=log2_shaper_name_aliases)
- colorspaces.append(log2_shaper_colorspace)
-
- shaper_input_scale_generic_log2 = 1
-
- # *Log 2* shaper name and *CTL* transforms bundled up.
- log2_shaper_data = [
- log2_shaper_name,
- os.path.join('%s',
- 'utilities',
- 'ACESlib.Log2_to_Lin_param.a1.0.1.ctl'),
- os.path.join('%s',
- 'utilities',
- 'ACESlib.Lin_to_Log2_param.a1.0.1.ctl'),
- shaper_input_scale_generic_log2,
- log2_params]
-
- shaper_data[log2_shaper_name] = log2_shaper_data
-
- # Defining the *Log2 shaper that includes the AP1* primaries.
- log2_shaper_api1_name = '%s - AP1' % log2_shaper_name
- log2_shaper_api1_colorspace = copy.deepcopy(log2_shaper_colorspace)
-
- log2_shaper_api1_colorspace.name = log2_shaper_api1_name
- log2_shaper_api1_colorspace.description = (
- 'The %s color space' % log2_shaper_api1_name)
- log2_shaper_api1_colorspace.aliases = [
- '%s_ap1' % compact(log2_shaper_name)]
- log2_shaper_api1_colorspace.equality_group = log2_shaper_api1_name
-
- # *AP1* primaries to *AP0* primaries
- log2_shaper_api1_colorspace.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': mat44_from_mat33(ACES_AP1_TO_AP0),
- 'direction': 'forward'
- })
- colorspaces.append(log2_shaper_api1_colorspace)
-
- return shaper_data, colorspaces
-
-# -------------------------------------------------------------------------
-# *Dolby PQ-based Shapers*
-# -------------------------------------------------------------------------
-def create_shapers_dolbypq(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- shaper_name,
- middle_grey,
- min_exposure,
- max_exposure):
- """
- Creates two *Dolby PQ* colorspaces, one with now gamut conversion, the other with
- the conversion from *ACES* *AP0* to *AP1*
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- shaper_name : str or unicode, optional
- The name of the ColorSpace
- middle_grey : float
- The middle of the dynamic range covered by the transfer function
- min_exposure : float
- The offset from middle grey, in stops, that defines the low end of the dynamic
- range covered by the transfer function
- max_exposure : float
- The offset from middle grey, in stops, that defines the high end of the dynamic
- range covered by the transfer function
-
- Returns
- -------
- dict
- Values defining a Shaper
- list of ColorSpaces
- A list of *Dolby PQ* colorspaces that covers a specific dynamic range
- """
- colorspaces = []
- shaper_data = {}
-
- # Define the *Dolby PQ Shaper that considers a fixed linear range*
- dolby_pq_shaper_name = shaper_name
- dolby_pq_shaper_name_aliases = ['crv_%s' % compact(dolby_pq_shaper_name)]
-
- dolby_pq_params = {
- 'middleGrey': middle_grey,
- 'minExposure': min_exposure,
- 'maxExposure': max_exposure}
-
- dolby_pq_shaper_colorspace = create_Dolby_PQ_shaper(
- aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name=dolby_pq_shaper_name,
- aliases=dolby_pq_shaper_name_aliases,
- middle_grey=dolby_pq_params['middleGrey'],
- min_exposure=dolby_pq_params['minExposure'],
- max_exposure=dolby_pq_params['maxExposure'])
- colorspaces.append(dolby_pq_shaper_colorspace)
-
- # *Dolby PQ* shaper name and *CTL* transforms bundled up.
- dolby_pq_shaper_data = [
- dolby_pq_shaper_name,
- os.path.join('%s',
- 'utilities',
- 'ACESlib.OCIOshaper_to_Lin_param.a1.0.1.ctl'),
- os.path.join('%s',
- 'utilities',
- 'ACESlib.Lin_to_OCIOshaper_param.a1.0.1.ctl'),
- 1.0,
- dolby_pq_params]
-
- shaper_data[dolby_pq_shaper_name] = dolby_pq_shaper_data
-
- # Defining the *Dolby PQ shaper that includes the AP1* primaries.
- dolby_pq_shaper_api1_name = '%s - AP1' % dolby_pq_shaper_name
- dolby_pq_shaper_api1_colorspace = copy.deepcopy(dolby_pq_shaper_colorspace)
-
- dolby_pq_shaper_api1_colorspace.name = dolby_pq_shaper_api1_name
- dolby_pq_shaper_api1_colorspace.description = (
- 'The %s color space' % dolby_pq_shaper_api1_name)
- dolby_pq_shaper_api1_colorspace.aliases = [
- '%s_ap1' % compact(dolby_pq_shaper_name)]
- dolby_pq_shaper_api1_colorspace.equality_group = dolby_pq_shaper_api1_name
-
- # *AP1* primaries to *AP0* primaries
- dolby_pq_shaper_api1_colorspace.to_reference_transforms.append({
- 'type': 'matrix',
- 'matrix': mat44_from_mat33(ACES_AP1_TO_AP0),
- 'direction': 'forward'
- })
- colorspaces.append(dolby_pq_shaper_api1_colorspace)
-
- return shaper_data, colorspaces
-
-
-# -------------------------------------------------------------------------
-# *Shapers*
-# -------------------------------------------------------------------------
-def create_shapers(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup):
-
- """
- Creates sets of shaper colorspaces covering the *Log 2* and *Dolby PQ*
- transfer functions and dynamic ranges suitable of use with the 48 nit,
- 1000 nit, 2000 nit and 4000 nit *ACES Output Transforms*
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
-
- Returns
- -------
- list of dicts
- Values defining a set of Shapers
- list of ColorSpaces
- A list of Shaper colorspaces that covers a varying dynamic ranges and
- transfer functions
- """
-
- colorspaces = []
- shaper_data = {}
-
- # Define the base *Log2 48 nits shaper*
- #
- (log2_48nits_shaper_data,
- log2_48nits_colorspaces) = create_shapers_log2(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Log2 48 nits Shaper',
- 0.18,
- -6.5,
- 6.5)
- colorspaces.extend(log2_48nits_colorspaces)
- shaper_data.update(log2_48nits_shaper_data)
-
- # Define the base *Log2 1000 nits shaper*
- #
- (log2_1000nits_shaper_data,
- log2_1000nits_colorspaces) = create_shapers_log2(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Log2 1000 nits Shaper',
- 0.18,
- -12.0,
- 10.0)
- colorspaces.extend(log2_1000nits_colorspaces)
- shaper_data.update(log2_1000nits_shaper_data)
-
- # Define the base *Log2 2000 nits shaper*
- #
- (log2_2000nits_shaper_data,
- log2_2000nits_colorspaces) = create_shapers_log2(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Log2 2000 nits Shaper',
- 0.18,
- -12.0,
- 11.0)
- colorspaces.extend(log2_2000nits_colorspaces)
- shaper_data.update(log2_2000nits_shaper_data)
-
- # Define the base *Log2 4000 nits shaper*
- #
- (log2_4000nits_shaper_data,
- log2_4000nits_colorspaces) = create_shapers_log2(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Log2 4000 nits Shaper',
- 0.18,
- -12.0,
- 12.0)
- colorspaces.extend(log2_4000nits_colorspaces)
- shaper_data.update(log2_4000nits_shaper_data)
-
- # Define the base *Dolby PQ transfer function*
- #
- dolby_pq_shaper_name = 'Dolby PQ 10000'
- dolby_pq_shaper_name_aliases = ['crv_%s' % 'dolbypq_10000']
-
- dolby_pq_shaper_colorspace = create_Dolby_PQ(
- aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- name=dolby_pq_shaper_name,
- aliases=dolby_pq_shaper_name_aliases)
- colorspaces.append(dolby_pq_shaper_colorspace)
-
- # *Dolby PQ* shaper name and *CTL* transforms bundled up.
- dolby_pq_shaper_data = [
- dolby_pq_shaper_name,
- os.path.join('%s',
- 'utilities',
- 'ACESlib.DolbyPQ_to_Lin.a1.0.1.ctl'),
- os.path.join('%s',
- 'utilities',
- 'ACESlib.Lin_to_DolbyPQ.a1.0.1.ctl'),
- 1.0,
- {}]
-
- shaper_data[dolby_pq_shaper_name] = dolby_pq_shaper_data
-
- # Define the *Dolby PQ 48 nits shaper*
- #
- (dolbypq_48nits_shaper_data,
- dolbypq_48nits_colorspaces) = create_shapers_dolbypq(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Dolby PQ 48 nits Shaper',
- 0.18,
- -6.5,
- 6.5)
- colorspaces.extend(dolbypq_48nits_colorspaces)
- shaper_data.update(dolbypq_48nits_shaper_data)
-
- # Define the *Dolby PQ 1000 nits shaper*
- #
- (dolbypq_1000nits_shaper_data,
- dolbypq_1000nits_colorspaces) = create_shapers_dolbypq(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Dolby PQ 1000 nits Shaper',
- 0.18,
- -12.0,
- 10.0)
- colorspaces.extend(dolbypq_1000nits_colorspaces)
- shaper_data.update(dolbypq_1000nits_shaper_data)
-
- # Define the *Dolby PQ 2000 nits shaper*
- #
- (dolbypq_2000nits_shaper_data,
- dolbypq_2000nits_colorspaces) = create_shapers_dolbypq(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Dolby PQ 2000 nits Shaper',
- 0.18,
- -12.0,
- 11.0)
- colorspaces.extend(dolbypq_2000nits_colorspaces)
- shaper_data.update(dolbypq_2000nits_shaper_data)
-
- # Define the *Dolby PQ 4000 nits shaper*
- #
- (dolbypq_4000nits_shaper_data,
- dolbypq_4000nits_colorspaces) = create_shapers_dolbypq(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup,
- 'Dolby PQ 4000 nits Shaper',
- 0.18,
- -12.0,
- 12.0)
- colorspaces.extend(dolbypq_4000nits_colorspaces)
- shaper_data.update(dolbypq_4000nits_shaper_data)
-
- return shaper_data, colorspaces
-
-# -------------------------------------------------------------------------
-# *ODTs*
-# -------------------------------------------------------------------------
-def create_ODTs(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- lut_resolution_3d,
- odt_info,
- shaper_name,
- cleanup,
- linear_display_space,
- log_display_space):
- """
- Create ColorSpaces representing the *ACES Output Transforms*
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- lut_resolution_3d : int
- The resolution of generated 3D LUTs
- odt_info : dict
- A collection of values that define the Output Transforms that need to be
- generated
- shaper_name : str or unicode, optional
- The name of Shaper ColorSpace to use when generating LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
- linear_display_space : lstr or unicode
- The name of the ColorSpace to use for the raw or linear View
- log_display_space : lstr or unicode
- The name of the ColorSpace to use for the log View
-
- Returns
- -------
- list of ColorSpaces
- ColorSpaces representing the *ACES Output Transforms*
- list of dicts
- Collections of names and ColorSpaces corresponding to the Displays and
- Views
- """
-
- colorspaces = []
- displays = {}
-
- # -------------------------------------------------------------------------
- # *RRT / ODT* Shaper Options
- # -------------------------------------------------------------------------
- shaper_data, shaper_colorspaces = create_shapers(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- cleanup)
-
- colorspaces.extend(shaper_colorspaces)
-
- # Assumes shaper has variants covering the range expected by the
- # 48 nit, 1000 nit, 2000 nit and 4000 nit Ouput Transforms
- rrt_shaper_48nits = shaper_data[shaper_name]
- rrt_shaper_1000nits = shaper_data[shaper_name.replace("48 nits", "1000 nits")]
- rrt_shaper_2000nits = shaper_data[shaper_name.replace("48 nits", "2000 nits")]
- rrt_shaper_4000nits = shaper_data[shaper_name.replace("48 nits", "4000 nits")]
-
- # *RRT + ODT* combinations.
- sorted_odts = sorted(odt_info.iteritems(), key=lambda x: x[1])
- print(sorted_odts)
- for odt in sorted_odts:
- (odt_name, odt_values) = odt
-
- if odt_values['transformHasFullLegalSwitch']:
- odt_legal['legalRange'] = 0
-
- odt_name_legal = odt_values['transformUserName']
- odt_legal = odt_values.copy()
- odt_aliases = ['out_%s' % compact(odt_name_legal)]
-
- if odt_name_legal in ['P3-D60 ST2048 (1000 nits)', 'Rec.2020 ST2048 (1000 nits)']:
- rrt_shaper = rrt_shaper_1000nits
- elif odt_name_legal in ['P3-D60 ST2048 (2000 nits)']:
- rrt_shaper = rrt_shaper_2000nits
- elif odt_name_legal in ['P3-D60 ST2048 (4000 nits)']:
- rrt_shaper = rrt_shaper_4000nits
- else:
- rrt_shaper = rrt_shaper_48nits
-
- cs = create_ACES_RRT_plus_ODT(
- odt_name_legal,
- odt_legal,
- rrt_shaper,
- aces_ctl_directory,
- lut_directory,
- lut_resolution_3d,
- cleanup,
- odt_aliases)
- colorspaces.append(cs)
-
- displays[odt_name_legal] = {
- 'Raw': linear_display_space,
- 'Log': log_display_space,
- 'Output Transform': cs}
-
- return colorspaces, displays
-
-
-def get_transform_info(ctl_transform):
- """
- Returns the information stored in first couple of lines of an official
- *ACES Transform* CTL file
-
- Parameters
- ----------
- ctl_transform : str or unicode
- The path to the CTL file to be scraped.
-
- Returns
- -------
- tuple
- Combination of Transform ID, User Name, User Name Prefix and Full/Legal
- switch
- """
-
- with open(ctl_transform, 'rb') as fp:
- lines = fp.readlines()
-
- # Retrieving the *transform ID* and *User Name*.
- transform_id = lines[1][3:].split('<')[1].split('>')[1].strip()
- transform_user_name = '-'.join(
- lines[2][3:].split('<')[1].split('>')[1].split('-')[1:]).strip()
- transform_user_name_prefix = (
- lines[2][3:].split('<')[1].split('>')[1].split('-')[0].strip())
-
- # Figuring out if this transform has options for processing *full* and
- # *legal* ranges.
- transform_full_legal_switch = False
- for line in lines:
- if line.strip() == 'input varying int legalRange = 0':
- # print( '%s has legal range flag' % transform_user_name)
- transform_full_legal_switch = True
- break
-
- return (transform_id,
- transform_user_name,
- transform_user_name_prefix,
- transform_full_legal_switch)
-
-
-def get_ODTs_info(aces_ctl_directory):
- """
- Returns the information describing the names and CTL files associated with
- the *ACES Output Transforms* in a given ACES release
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the base *ACES* CTL directory
-
- Returns
- -------
- dict of dicts
- Collecton of dicts, one describing each *ACES Output Transform*
- """
-
- # TODO: Investigate usage of *files_walker* definition here.
- # Credit to *Alex Fry* for the original approach here.
- odt_dir = os.path.join(aces_ctl_directory, 'odt')
- all_odt = []
- for dir_name, subdir_list, file_list in os.walk(odt_dir):
- for fname in file_list:
- all_odt.append((os.path.join(dir_name, fname)))
-
- odt_ctls = [x for x in all_odt if
- ('InvODT' not in x) and (os.path.split(x)[-1][0] != '.')]
-
- odts = {}
-
- for odt_ctl in odt_ctls:
- odt_tokens = os.path.split(odt_ctl)
-
- # Handling nested directories.
- odt_path_tokens = os.path.split(odt_tokens[-2])
- odt_dir = odt_path_tokens[-1]
- while odt_path_tokens[-2][-3:] != 'odt':
- odt_path_tokens = os.path.split(odt_path_tokens[-2])
- odt_dir = os.path.join(odt_path_tokens[-1], odt_dir)
-
- # Building full name.
- transform_ctl = odt_tokens[-1]
- odt_name = string.join(transform_ctl.split('.')[1:-1], '.')
-
- # Finding id, user name and user name prefix.
- (transform_id,
- transform_user_name,
- transform_user_name_prefix,
- transform_full_legal_switch) = get_transform_info(
- os.path.join(aces_ctl_directory, 'odt', odt_dir, transform_ctl))
-
- # Finding inverse.
- transform_ctl_inverse = 'InvODT.%s.ctl' % odt_name
- if not os.path.exists(
- os.path.join(odt_tokens[-2], transform_ctl_inverse)):
- transform_ctl_inverse = None
-
- # Adding to list of *ODTs*.
- odts[odt_name] = {}
- odts[odt_name]['transformCTL'] = os.path.join(odt_dir, transform_ctl)
- if transform_ctl_inverse is not None:
- odts[odt_name]['transformCTLInverse'] = os.path.join(
- odt_dir, transform_ctl_inverse)
-
- odts[odt_name]['transformID'] = transform_id
- odts[odt_name]['transformUserNamePrefix'] = transform_user_name_prefix
- odts[odt_name]['transformUserName'] = transform_user_name
- odts[odt_name][
- 'transformHasFullLegalSwitch'] = transform_full_legal_switch
-
- forward_ctl = odts[odt_name]['transformCTL']
-
- print('ODT : %s' % odt_name)
- print('\tTransform ID : %s' % transform_id)
- print('\tTransform User Name Prefix : %s' % transform_user_name_prefix)
- print('\tTransform User Name : %s' % transform_user_name)
- print(
- '\tHas Full / Legal Switch : %s' % transform_full_legal_switch)
- print('\tForward ctl : %s' % forward_ctl)
- if 'transformCTLInverse' in odts[odt_name]:
- inverse_ctl = odts[odt_name]['transformCTLInverse']
- print('\tInverse ctl : %s' % inverse_ctl)
- else:
- print('\tInverse ctl : %s' % 'None')
-
- print('\n')
-
- return odts
-
-
-def get_LMTs_info(aces_ctl_directory):
- """
- Returns the information describing the names and CTL files associated with
- the *ACES Look Transforms* in a given ACES release
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the base *ACES* CTL directory
-
- Returns
- -------
- dict of dicts
- Collecton of dicts, one describing each *ACES Look Transform*
- """
-
- # TODO: Investigate refactoring with previous definition.
-
- # Credit to Alex Fry for the original approach here
- lmt_dir = os.path.join(aces_ctl_directory, 'lmt')
- all_lmt = []
- for dir_name, subdir_list, file_list in os.walk(lmt_dir):
- for fname in file_list:
- all_lmt.append((os.path.join(dir_name, fname)))
-
- lmt_ctls = [x for x in all_lmt if
- ('InvLMT' not in x) and ('README' not in x) and (
- os.path.split(x)[-1][0] != '.')]
-
- lmts = {}
-
- for lmt_ctl in lmt_ctls:
- lmt_tokens = os.path.split(lmt_ctl)
-
- # Handlimg nested directories.
- lmt_path_tokens = os.path.split(lmt_tokens[-2])
- lmt_dir = lmt_path_tokens[-1]
- while lmt_path_tokens[-2][-3:] != 'ctl':
- lmt_path_tokens = os.path.split(lmt_path_tokens[-2])
- lmt_dir = os.path.join(lmt_path_tokens[-1], lmt_dir)
-
- # Building full name.
- transform_ctl = lmt_tokens[-1]
- lmt_name = string.join(transform_ctl.split('.')[1:-1], '.')
-
- # Finding id, user name and user name prefix.
- (transform_id,
- transform_user_name,
- transform_user_name_prefix,
- transform_full_legal_switch) = get_transform_info(
- os.path.join(aces_ctl_directory, lmt_dir, transform_ctl))
-
- # Finding inverse.
- transform_ctl_inverse = 'InvLMT.%s.ctl' % lmt_name
- if not os.path.exists(
- os.path.join(lmt_tokens[-2], transform_ctl_inverse)):
- transform_ctl_inverse = None
-
- lmts[lmt_name] = {}
- lmts[lmt_name]['transformCTL'] = os.path.join(lmt_dir, transform_ctl)
- if transform_ctl_inverse is not None:
- lmts[lmt_name]['transformCTLInverse'] = os.path.join(
- lmt_dir, transform_ctl_inverse)
-
- lmts[lmt_name]['transformID'] = transform_id
- lmts[lmt_name]['transformUserNamePrefix'] = transform_user_name_prefix
- lmts[lmt_name]['transformUserName'] = transform_user_name
-
- forward_ctl = lmts[lmt_name]['transformCTL']
-
- print('LMT : %s' % lmt_name)
- print('\tTransform ID : %s' % transform_id)
- print('\tTransform User Name Prefix : %s' % transform_user_name_prefix)
- print('\tTransform User Name : %s' % transform_user_name)
- print('\t Forward ctl : %s' % forward_ctl)
- if 'transformCTLInverse' in lmts[lmt_name]:
- inverse_ctl = lmts[lmt_name]['transformCTLInverse']
- print('\t Inverse ctl : %s' % inverse_ctl)
- else:
- print('\t Inverse ctl : %s' % 'None')
-
- print('\n')
-
- return lmts
-
-
-def create_colorspaces(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- lut_resolution_3d,
- lmt_info,
- odt_info,
- shaper_name,
- cleanup):
- """
- Generates the *ACES* colorspaces, displays and views
-
- Parameters
- ----------
- aces_ctl_directory : str or unicode
- The path to the aces 'transforms/ctl/utilities'
- lut_directory : str or unicode
- The directory to use when generating LUTs
- lut_resolution_1d : int
- The resolution of generated 1D LUTs
- lut_resolution_3d : int
- The resolution of generated 3D LUTs
- lmt_info : dict
- A collection of values that define the Look Transforms that need to be
- generated
- odt_info : dict
- A collection of values that define the Output Transforms that need to be
- generated
- shaper_name : str or unicode, optional
- The name of Shaper ColorSpace to use when generating LUTs
- cleanup : bool
- Whether or not to clean up the intermediate images
-
- Returns
- -------
- tuple
- A collection of values defining
- the reference colorspace : ACES
- a list of the colorspaces created
- a list of the displays created
- a list of the general log colorspace
- a list of the role assignments
- the name of the default display
- """
-
- colorspaces = []
-
- ACES = create_ACES()
-
- ACEScc = create_ACEScc(aces_ctl_directory, lut_directory,
- lut_resolution_1d, cleanup,
- min_value=-0.35840, max_value=1.468)
- colorspaces.append(ACEScc)
-
- ACESproxy = create_ACESproxy(aces_ctl_directory, lut_directory,
- lut_resolution_1d, cleanup)
- colorspaces.append(ACESproxy)
-
- ACEScg = create_ACEScg()
- colorspaces.append(ACEScg)
-
- ADX10 = create_ADX(lut_directory, bit_depth=10)
- colorspaces.append(ADX10)
-
- ADX16 = create_ADX(lut_directory, bit_depth=16)
- colorspaces.append(ADX16)
-
- lmts = create_LMTs(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- lut_resolution_3d,
- lmt_info,
- cleanup)
- colorspaces.extend(lmts)
-
- odts, displays = create_ODTs(aces_ctl_directory,
- lut_directory,
- lut_resolution_1d,
- lut_resolution_3d,
- odt_info,
- shaper_name,
- cleanup,
- ACES,
- ACEScc)
- colorspaces.extend(odts)
-
- # TODO: Investigate if there is a way to retrieve these values from *CTL*.
- default_display = 'sRGB (D60 sim.)'
- color_picking = 'Rec.709'
-
- roles = {'color_picking': color_picking,
- 'color_timing': ACEScc.name,
- 'compositing_log': ACEScc.name,
- 'data': '',
- 'default': ACES.name,
- 'matte_paint': ACEScc.name,
- 'reference': '',
- 'scene_linear': ACEScg.name,
- 'texture_paint': '',
- 'compositing_linear': ACEScg.name,
- 'rendering': ACEScg.name}
-
- return ACES, colorspaces, displays, ACEScc, roles, default_display
projects / OpenColorIO-Configs.git / blobdiff