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Diffstat (limited to 'venv/lib/python3.9/site-packages/PIL/ImageCms.py')
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diff --git a/venv/lib/python3.9/site-packages/PIL/ImageCms.py b/venv/lib/python3.9/site-packages/PIL/ImageCms.py new file mode 100644 index 00000000..f8784968 --- /dev/null +++ b/venv/lib/python3.9/site-packages/PIL/ImageCms.py @@ -0,0 +1,1026 @@ +# The Python Imaging Library. +# $Id$ + +# Optional color management support, based on Kevin Cazabon's PyCMS +# library. + +# History: + +# 2009-03-08 fl Added to PIL. + +# Copyright (C) 2002-2003 Kevin Cazabon +# Copyright (c) 2009 by Fredrik Lundh +# Copyright (c) 2013 by Eric Soroos + +# See the README file for information on usage and redistribution. See +# below for the original description. + +import sys +from enum import IntEnum + +from PIL import Image + +from ._deprecate import deprecate + +try: + from PIL import _imagingcms +except ImportError as ex: + # Allow error import for doc purposes, but error out when accessing + # anything in core. + from ._util import DeferredError + + _imagingcms = DeferredError(ex) + +DESCRIPTION = """ +pyCMS + + a Python / PIL interface to the littleCMS ICC Color Management System + Copyright (C) 2002-2003 Kevin Cazabon + kevin@cazabon.com + https://www.cazabon.com + + pyCMS home page: https://www.cazabon.com/pyCMS + littleCMS home page: https://www.littlecms.com + (littleCMS is Copyright (C) 1998-2001 Marti Maria) + + Originally released under LGPL. Graciously donated to PIL in + March 2009, for distribution under the standard PIL license + + The pyCMS.py module provides a "clean" interface between Python/PIL and + pyCMSdll, taking care of some of the more complex handling of the direct + pyCMSdll functions, as well as error-checking and making sure that all + relevant data is kept together. + + While it is possible to call pyCMSdll functions directly, it's not highly + recommended. + + Version History: + + 1.0.0 pil Oct 2013 Port to LCMS 2. + + 0.1.0 pil mod March 10, 2009 + + Renamed display profile to proof profile. The proof + profile is the profile of the device that is being + simulated, not the profile of the device which is + actually used to display/print the final simulation + (that'd be the output profile) - also see LCMSAPI.txt + input colorspace -> using 'renderingIntent' -> proof + colorspace -> using 'proofRenderingIntent' -> output + colorspace + + Added LCMS FLAGS support. + Added FLAGS["SOFTPROOFING"] as default flag for + buildProofTransform (otherwise the proof profile/intent + would be ignored). + + 0.1.0 pil March 2009 - added to PIL, as PIL.ImageCms + + 0.0.2 alpha Jan 6, 2002 + + Added try/except statements around type() checks of + potential CObjects... Python won't let you use type() + on them, and raises a TypeError (stupid, if you ask + me!) + + Added buildProofTransformFromOpenProfiles() function. + Additional fixes in DLL, see DLL code for details. + + 0.0.1 alpha first public release, Dec. 26, 2002 + + Known to-do list with current version (of Python interface, not pyCMSdll): + + none + +""" + +VERSION = "1.0.0 pil" + +# --------------------------------------------------------------------. + +core = _imagingcms + +# +# intent/direction values + + +class Intent(IntEnum): + PERCEPTUAL = 0 + RELATIVE_COLORIMETRIC = 1 + SATURATION = 2 + ABSOLUTE_COLORIMETRIC = 3 + + +class Direction(IntEnum): + INPUT = 0 + OUTPUT = 1 + PROOF = 2 + + +def __getattr__(name): + for enum, prefix in {Intent: "INTENT_", Direction: "DIRECTION_"}.items(): + if name.startswith(prefix): + name = name[len(prefix) :] + if name in enum.__members__: + deprecate(f"{prefix}{name}", 10, f"{enum.__name__}.{name}") + return enum[name] + msg = f"module '{__name__}' has no attribute '{name}'" + raise AttributeError(msg) + + +# +# flags + +FLAGS = { + "MATRIXINPUT": 1, + "MATRIXOUTPUT": 2, + "MATRIXONLY": (1 | 2), + "NOWHITEONWHITEFIXUP": 4, # Don't hot fix scum dot + # Don't create prelinearization tables on precalculated transforms + # (internal use): + "NOPRELINEARIZATION": 16, + "GUESSDEVICECLASS": 32, # Guess device class (for transform2devicelink) + "NOTCACHE": 64, # Inhibit 1-pixel cache + "NOTPRECALC": 256, + "NULLTRANSFORM": 512, # Don't transform anyway + "HIGHRESPRECALC": 1024, # Use more memory to give better accuracy + "LOWRESPRECALC": 2048, # Use less memory to minimize resources + "WHITEBLACKCOMPENSATION": 8192, + "BLACKPOINTCOMPENSATION": 8192, + "GAMUTCHECK": 4096, # Out of Gamut alarm + "SOFTPROOFING": 16384, # Do softproofing + "PRESERVEBLACK": 32768, # Black preservation + "NODEFAULTRESOURCEDEF": 16777216, # CRD special + "GRIDPOINTS": lambda n: (n & 0xFF) << 16, # Gridpoints +} + +_MAX_FLAG = 0 +for flag in FLAGS.values(): + if isinstance(flag, int): + _MAX_FLAG = _MAX_FLAG | flag + + +# --------------------------------------------------------------------. +# Experimental PIL-level API +# --------------------------------------------------------------------. + +## +# Profile. + + +class ImageCmsProfile: + def __init__(self, profile): + """ + :param profile: Either a string representing a filename, + a file like object containing a profile or a + low-level profile object + + """ + + if isinstance(profile, str): + if sys.platform == "win32": + profile_bytes_path = profile.encode() + try: + profile_bytes_path.decode("ascii") + except UnicodeDecodeError: + with open(profile, "rb") as f: + self._set(core.profile_frombytes(f.read())) + return + self._set(core.profile_open(profile), profile) + elif hasattr(profile, "read"): + self._set(core.profile_frombytes(profile.read())) + elif isinstance(profile, _imagingcms.CmsProfile): + self._set(profile) + else: + msg = "Invalid type for Profile" + raise TypeError(msg) + + def _set(self, profile, filename=None): + self.profile = profile + self.filename = filename + if profile: + self.product_name = None # profile.product_name + self.product_info = None # profile.product_info + else: + self.product_name = None + self.product_info = None + + def tobytes(self): + """ + Returns the profile in a format suitable for embedding in + saved images. + + :returns: a bytes object containing the ICC profile. + """ + + return core.profile_tobytes(self.profile) + + +class ImageCmsTransform(Image.ImagePointHandler): + + """ + Transform. This can be used with the procedural API, or with the standard + :py:func:`~PIL.Image.Image.point` method. + + Will return the output profile in the ``output.info['icc_profile']``. + """ + + def __init__( + self, + input, + output, + input_mode, + output_mode, + intent=Intent.PERCEPTUAL, + proof=None, + proof_intent=Intent.ABSOLUTE_COLORIMETRIC, + flags=0, + ): + if proof is None: + self.transform = core.buildTransform( + input.profile, output.profile, input_mode, output_mode, intent, flags + ) + else: + self.transform = core.buildProofTransform( + input.profile, + output.profile, + proof.profile, + input_mode, + output_mode, + intent, + proof_intent, + flags, + ) + # Note: inputMode and outputMode are for pyCMS compatibility only + self.input_mode = self.inputMode = input_mode + self.output_mode = self.outputMode = output_mode + + self.output_profile = output + + def point(self, im): + return self.apply(im) + + def apply(self, im, imOut=None): + im.load() + if imOut is None: + imOut = Image.new(self.output_mode, im.size, None) + self.transform.apply(im.im.id, imOut.im.id) + imOut.info["icc_profile"] = self.output_profile.tobytes() + return imOut + + def apply_in_place(self, im): + im.load() + if im.mode != self.output_mode: + msg = "mode mismatch" + raise ValueError(msg) # wrong output mode + self.transform.apply(im.im.id, im.im.id) + im.info["icc_profile"] = self.output_profile.tobytes() + return im + + +def get_display_profile(handle=None): + """ + (experimental) Fetches the profile for the current display device. + + :returns: ``None`` if the profile is not known. + """ + + if sys.platform != "win32": + return None + + from PIL import ImageWin + + if isinstance(handle, ImageWin.HDC): + profile = core.get_display_profile_win32(handle, 1) + else: + profile = core.get_display_profile_win32(handle or 0) + if profile is None: + return None + return ImageCmsProfile(profile) + + +# --------------------------------------------------------------------. +# pyCMS compatible layer +# --------------------------------------------------------------------. + + +class PyCMSError(Exception): + + """(pyCMS) Exception class. + This is used for all errors in the pyCMS API.""" + + pass + + +def profileToProfile( + im, + inputProfile, + outputProfile, + renderingIntent=Intent.PERCEPTUAL, + outputMode=None, + inPlace=False, + flags=0, +): + """ + (pyCMS) Applies an ICC transformation to a given image, mapping from + ``inputProfile`` to ``outputProfile``. + + If the input or output profiles specified are not valid filenames, a + :exc:`PyCMSError` will be raised. If ``inPlace`` is ``True`` and + ``outputMode != im.mode``, a :exc:`PyCMSError` will be raised. + If an error occurs during application of the profiles, + a :exc:`PyCMSError` will be raised. + If ``outputMode`` is not a mode supported by the ``outputProfile`` (or by pyCMS), + a :exc:`PyCMSError` will be raised. + + This function applies an ICC transformation to im from ``inputProfile``'s + color space to ``outputProfile``'s color space using the specified rendering + intent to decide how to handle out-of-gamut colors. + + ``outputMode`` can be used to specify that a color mode conversion is to + be done using these profiles, but the specified profiles must be able + to handle that mode. I.e., if converting im from RGB to CMYK using + profiles, the input profile must handle RGB data, and the output + profile must handle CMYK data. + + :param im: An open :py:class:`~PIL.Image.Image` object (i.e. Image.new(...) + or Image.open(...), etc.) + :param inputProfile: String, as a valid filename path to the ICC input + profile you wish to use for this image, or a profile object + :param outputProfile: String, as a valid filename path to the ICC output + profile you wish to use for this image, or a profile object + :param renderingIntent: Integer (0-3) specifying the rendering intent you + wish to use for the transform + + ImageCms.Intent.PERCEPTUAL = 0 (DEFAULT) + ImageCms.Intent.RELATIVE_COLORIMETRIC = 1 + ImageCms.Intent.SATURATION = 2 + ImageCms.Intent.ABSOLUTE_COLORIMETRIC = 3 + + see the pyCMS documentation for details on rendering intents and what + they do. + :param outputMode: A valid PIL mode for the output image (i.e. "RGB", + "CMYK", etc.). Note: if rendering the image "inPlace", outputMode + MUST be the same mode as the input, or omitted completely. If + omitted, the outputMode will be the same as the mode of the input + image (im.mode) + :param inPlace: Boolean. If ``True``, the original image is modified in-place, + and ``None`` is returned. If ``False`` (default), a new + :py:class:`~PIL.Image.Image` object is returned with the transform applied. + :param flags: Integer (0-...) specifying additional flags + :returns: Either None or a new :py:class:`~PIL.Image.Image` object, depending on + the value of ``inPlace`` + :exception PyCMSError: + """ + + if outputMode is None: + outputMode = im.mode + + if not isinstance(renderingIntent, int) or not (0 <= renderingIntent <= 3): + msg = "renderingIntent must be an integer between 0 and 3" + raise PyCMSError(msg) + + if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG): + msg = f"flags must be an integer between 0 and {_MAX_FLAG}" + raise PyCMSError(msg) + + try: + if not isinstance(inputProfile, ImageCmsProfile): + inputProfile = ImageCmsProfile(inputProfile) + if not isinstance(outputProfile, ImageCmsProfile): + outputProfile = ImageCmsProfile(outputProfile) + transform = ImageCmsTransform( + inputProfile, + outputProfile, + im.mode, + outputMode, + renderingIntent, + flags=flags, + ) + if inPlace: + transform.apply_in_place(im) + imOut = None + else: + imOut = transform.apply(im) + except (OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + return imOut + + +def getOpenProfile(profileFilename): + """ + (pyCMS) Opens an ICC profile file. + + The PyCMSProfile object can be passed back into pyCMS for use in creating + transforms and such (as in ImageCms.buildTransformFromOpenProfiles()). + + If ``profileFilename`` is not a valid filename for an ICC profile, + a :exc:`PyCMSError` will be raised. + + :param profileFilename: String, as a valid filename path to the ICC profile + you wish to open, or a file-like object. + :returns: A CmsProfile class object. + :exception PyCMSError: + """ + + try: + return ImageCmsProfile(profileFilename) + except (OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def buildTransform( + inputProfile, + outputProfile, + inMode, + outMode, + renderingIntent=Intent.PERCEPTUAL, + flags=0, +): + """ + (pyCMS) Builds an ICC transform mapping from the ``inputProfile`` to the + ``outputProfile``. Use applyTransform to apply the transform to a given + image. + + If the input or output profiles specified are not valid filenames, a + :exc:`PyCMSError` will be raised. If an error occurs during creation + of the transform, a :exc:`PyCMSError` will be raised. + + If ``inMode`` or ``outMode`` are not a mode supported by the ``outputProfile`` + (or by pyCMS), a :exc:`PyCMSError` will be raised. + + This function builds and returns an ICC transform from the ``inputProfile`` + to the ``outputProfile`` using the ``renderingIntent`` to determine what to do + with out-of-gamut colors. It will ONLY work for converting images that + are in ``inMode`` to images that are in ``outMode`` color format (PIL mode, + i.e. "RGB", "RGBA", "CMYK", etc.). + + Building the transform is a fair part of the overhead in + ImageCms.profileToProfile(), so if you're planning on converting multiple + images using the same input/output settings, this can save you time. + Once you have a transform object, it can be used with + ImageCms.applyProfile() to convert images without the need to re-compute + the lookup table for the transform. + + The reason pyCMS returns a class object rather than a handle directly + to the transform is that it needs to keep track of the PIL input/output + modes that the transform is meant for. These attributes are stored in + the ``inMode`` and ``outMode`` attributes of the object (which can be + manually overridden if you really want to, but I don't know of any + time that would be of use, or would even work). + + :param inputProfile: String, as a valid filename path to the ICC input + profile you wish to use for this transform, or a profile object + :param outputProfile: String, as a valid filename path to the ICC output + profile you wish to use for this transform, or a profile object + :param inMode: String, as a valid PIL mode that the appropriate profile + also supports (i.e. "RGB", "RGBA", "CMYK", etc.) + :param outMode: String, as a valid PIL mode that the appropriate profile + also supports (i.e. "RGB", "RGBA", "CMYK", etc.) + :param renderingIntent: Integer (0-3) specifying the rendering intent you + wish to use for the transform + + ImageCms.Intent.PERCEPTUAL = 0 (DEFAULT) + ImageCms.Intent.RELATIVE_COLORIMETRIC = 1 + ImageCms.Intent.SATURATION = 2 + ImageCms.Intent.ABSOLUTE_COLORIMETRIC = 3 + + see the pyCMS documentation for details on rendering intents and what + they do. + :param flags: Integer (0-...) specifying additional flags + :returns: A CmsTransform class object. + :exception PyCMSError: + """ + + if not isinstance(renderingIntent, int) or not (0 <= renderingIntent <= 3): + msg = "renderingIntent must be an integer between 0 and 3" + raise PyCMSError(msg) + + if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG): + msg = "flags must be an integer between 0 and %s" + _MAX_FLAG + raise PyCMSError(msg) + + try: + if not isinstance(inputProfile, ImageCmsProfile): + inputProfile = ImageCmsProfile(inputProfile) + if not isinstance(outputProfile, ImageCmsProfile): + outputProfile = ImageCmsProfile(outputProfile) + return ImageCmsTransform( + inputProfile, outputProfile, inMode, outMode, renderingIntent, flags=flags + ) + except (OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def buildProofTransform( + inputProfile, + outputProfile, + proofProfile, + inMode, + outMode, + renderingIntent=Intent.PERCEPTUAL, + proofRenderingIntent=Intent.ABSOLUTE_COLORIMETRIC, + flags=FLAGS["SOFTPROOFING"], +): + """ + (pyCMS) Builds an ICC transform mapping from the ``inputProfile`` to the + ``outputProfile``, but tries to simulate the result that would be + obtained on the ``proofProfile`` device. + + If the input, output, or proof profiles specified are not valid + filenames, a :exc:`PyCMSError` will be raised. + + If an error occurs during creation of the transform, + a :exc:`PyCMSError` will be raised. + + If ``inMode`` or ``outMode`` are not a mode supported by the ``outputProfile`` + (or by pyCMS), a :exc:`PyCMSError` will be raised. + + This function builds and returns an ICC transform from the ``inputProfile`` + to the ``outputProfile``, but tries to simulate the result that would be + obtained on the ``proofProfile`` device using ``renderingIntent`` and + ``proofRenderingIntent`` to determine what to do with out-of-gamut + colors. This is known as "soft-proofing". It will ONLY work for + converting images that are in ``inMode`` to images that are in outMode + color format (PIL mode, i.e. "RGB", "RGBA", "CMYK", etc.). + + Usage of the resulting transform object is exactly the same as with + ImageCms.buildTransform(). + + Proof profiling is generally used when using an output device to get a + good idea of what the final printed/displayed image would look like on + the ``proofProfile`` device when it's quicker and easier to use the + output device for judging color. Generally, this means that the + output device is a monitor, or a dye-sub printer (etc.), and the simulated + device is something more expensive, complicated, or time consuming + (making it difficult to make a real print for color judgement purposes). + + Soft-proofing basically functions by adjusting the colors on the + output device to match the colors of the device being simulated. However, + when the simulated device has a much wider gamut than the output + device, you may obtain marginal results. + + :param inputProfile: String, as a valid filename path to the ICC input + profile you wish to use for this transform, or a profile object + :param outputProfile: String, as a valid filename path to the ICC output + (monitor, usually) profile you wish to use for this transform, or a + profile object + :param proofProfile: String, as a valid filename path to the ICC proof + profile you wish to use for this transform, or a profile object + :param inMode: String, as a valid PIL mode that the appropriate profile + also supports (i.e. "RGB", "RGBA", "CMYK", etc.) + :param outMode: String, as a valid PIL mode that the appropriate profile + also supports (i.e. "RGB", "RGBA", "CMYK", etc.) + :param renderingIntent: Integer (0-3) specifying the rendering intent you + wish to use for the input->proof (simulated) transform + + ImageCms.Intent.PERCEPTUAL = 0 (DEFAULT) + ImageCms.Intent.RELATIVE_COLORIMETRIC = 1 + ImageCms.Intent.SATURATION = 2 + ImageCms.Intent.ABSOLUTE_COLORIMETRIC = 3 + + see the pyCMS documentation for details on rendering intents and what + they do. + :param proofRenderingIntent: Integer (0-3) specifying the rendering intent + you wish to use for proof->output transform + + ImageCms.Intent.PERCEPTUAL = 0 (DEFAULT) + ImageCms.Intent.RELATIVE_COLORIMETRIC = 1 + ImageCms.Intent.SATURATION = 2 + ImageCms.Intent.ABSOLUTE_COLORIMETRIC = 3 + + see the pyCMS documentation for details on rendering intents and what + they do. + :param flags: Integer (0-...) specifying additional flags + :returns: A CmsTransform class object. + :exception PyCMSError: + """ + + if not isinstance(renderingIntent, int) or not (0 <= renderingIntent <= 3): + msg = "renderingIntent must be an integer between 0 and 3" + raise PyCMSError(msg) + + if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG): + msg = "flags must be an integer between 0 and %s" + _MAX_FLAG + raise PyCMSError(msg) + + try: + if not isinstance(inputProfile, ImageCmsProfile): + inputProfile = ImageCmsProfile(inputProfile) + if not isinstance(outputProfile, ImageCmsProfile): + outputProfile = ImageCmsProfile(outputProfile) + if not isinstance(proofProfile, ImageCmsProfile): + proofProfile = ImageCmsProfile(proofProfile) + return ImageCmsTransform( + inputProfile, + outputProfile, + inMode, + outMode, + renderingIntent, + proofProfile, + proofRenderingIntent, + flags, + ) + except (OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +buildTransformFromOpenProfiles = buildTransform +buildProofTransformFromOpenProfiles = buildProofTransform + + +def applyTransform(im, transform, inPlace=False): + """ + (pyCMS) Applies a transform to a given image. + + If ``im.mode != transform.inMode``, a :exc:`PyCMSError` is raised. + + If ``inPlace`` is ``True`` and ``transform.inMode != transform.outMode``, a + :exc:`PyCMSError` is raised. + + If ``im.mode``, ``transform.inMode`` or ``transform.outMode`` is not + supported by pyCMSdll or the profiles you used for the transform, a + :exc:`PyCMSError` is raised. + + If an error occurs while the transform is being applied, + a :exc:`PyCMSError` is raised. + + This function applies a pre-calculated transform (from + ImageCms.buildTransform() or ImageCms.buildTransformFromOpenProfiles()) + to an image. The transform can be used for multiple images, saving + considerable calculation time if doing the same conversion multiple times. + + If you want to modify im in-place instead of receiving a new image as + the return value, set ``inPlace`` to ``True``. This can only be done if + ``transform.inMode`` and ``transform.outMode`` are the same, because we can't + change the mode in-place (the buffer sizes for some modes are + different). The default behavior is to return a new :py:class:`~PIL.Image.Image` + object of the same dimensions in mode ``transform.outMode``. + + :param im: An :py:class:`~PIL.Image.Image` object, and im.mode must be the same + as the ``inMode`` supported by the transform. + :param transform: A valid CmsTransform class object + :param inPlace: Bool. If ``True``, ``im`` is modified in place and ``None`` is + returned, if ``False``, a new :py:class:`~PIL.Image.Image` object with the + transform applied is returned (and ``im`` is not changed). The default is + ``False``. + :returns: Either ``None``, or a new :py:class:`~PIL.Image.Image` object, + depending on the value of ``inPlace``. The profile will be returned in + the image's ``info['icc_profile']``. + :exception PyCMSError: + """ + + try: + if inPlace: + transform.apply_in_place(im) + imOut = None + else: + imOut = transform.apply(im) + except (TypeError, ValueError) as v: + raise PyCMSError(v) from v + + return imOut + + +def createProfile(colorSpace, colorTemp=-1): + """ + (pyCMS) Creates a profile. + + If colorSpace not in ``["LAB", "XYZ", "sRGB"]``, + a :exc:`PyCMSError` is raised. + + If using LAB and ``colorTemp`` is not a positive integer, + a :exc:`PyCMSError` is raised. + + If an error occurs while creating the profile, + a :exc:`PyCMSError` is raised. + + Use this function to create common profiles on-the-fly instead of + having to supply a profile on disk and knowing the path to it. It + returns a normal CmsProfile object that can be passed to + ImageCms.buildTransformFromOpenProfiles() to create a transform to apply + to images. + + :param colorSpace: String, the color space of the profile you wish to + create. + Currently only "LAB", "XYZ", and "sRGB" are supported. + :param colorTemp: Positive integer for the white point for the profile, in + degrees Kelvin (i.e. 5000, 6500, 9600, etc.). The default is for D50 + illuminant if omitted (5000k). colorTemp is ONLY applied to LAB + profiles, and is ignored for XYZ and sRGB. + :returns: A CmsProfile class object + :exception PyCMSError: + """ + + if colorSpace not in ["LAB", "XYZ", "sRGB"]: + msg = ( + f"Color space not supported for on-the-fly profile creation ({colorSpace})" + ) + raise PyCMSError(msg) + + if colorSpace == "LAB": + try: + colorTemp = float(colorTemp) + except (TypeError, ValueError) as e: + msg = f'Color temperature must be numeric, "{colorTemp}" not valid' + raise PyCMSError(msg) from e + + try: + return core.createProfile(colorSpace, colorTemp) + except (TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def getProfileName(profile): + """ + + (pyCMS) Gets the internal product name for the given profile. + + If ``profile`` isn't a valid CmsProfile object or filename to a profile, + a :exc:`PyCMSError` is raised If an error occurs while trying + to obtain the name tag, a :exc:`PyCMSError` is raised. + + Use this function to obtain the INTERNAL name of the profile (stored + in an ICC tag in the profile itself), usually the one used when the + profile was originally created. Sometimes this tag also contains + additional information supplied by the creator. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :returns: A string containing the internal name of the profile as stored + in an ICC tag. + :exception PyCMSError: + """ + + try: + # add an extra newline to preserve pyCMS compatibility + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + # do it in python, not c. + # // name was "%s - %s" (model, manufacturer) || Description , + # // but if the Model and Manufacturer were the same or the model + # // was long, Just the model, in 1.x + model = profile.profile.model + manufacturer = profile.profile.manufacturer + + if not (model or manufacturer): + return (profile.profile.profile_description or "") + "\n" + if not manufacturer or len(model) > 30: + return model + "\n" + return f"{model} - {manufacturer}\n" + + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def getProfileInfo(profile): + """ + (pyCMS) Gets the internal product information for the given profile. + + If ``profile`` isn't a valid CmsProfile object or filename to a profile, + a :exc:`PyCMSError` is raised. + + If an error occurs while trying to obtain the info tag, + a :exc:`PyCMSError` is raised. + + Use this function to obtain the information stored in the profile's + info tag. This often contains details about the profile, and how it + was created, as supplied by the creator. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :returns: A string containing the internal profile information stored in + an ICC tag. + :exception PyCMSError: + """ + + try: + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + # add an extra newline to preserve pyCMS compatibility + # Python, not C. the white point bits weren't working well, + # so skipping. + # info was description \r\n\r\n copyright \r\n\r\n K007 tag \r\n\r\n whitepoint + description = profile.profile.profile_description + cpright = profile.profile.copyright + arr = [] + for elt in (description, cpright): + if elt: + arr.append(elt) + return "\r\n\r\n".join(arr) + "\r\n\r\n" + + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def getProfileCopyright(profile): + """ + (pyCMS) Gets the copyright for the given profile. + + If ``profile`` isn't a valid CmsProfile object or filename to a profile, a + :exc:`PyCMSError` is raised. + + If an error occurs while trying to obtain the copyright tag, + a :exc:`PyCMSError` is raised. + + Use this function to obtain the information stored in the profile's + copyright tag. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :returns: A string containing the internal profile information stored in + an ICC tag. + :exception PyCMSError: + """ + try: + # add an extra newline to preserve pyCMS compatibility + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + return (profile.profile.copyright or "") + "\n" + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def getProfileManufacturer(profile): + """ + (pyCMS) Gets the manufacturer for the given profile. + + If ``profile`` isn't a valid CmsProfile object or filename to a profile, a + :exc:`PyCMSError` is raised. + + If an error occurs while trying to obtain the manufacturer tag, a + :exc:`PyCMSError` is raised. + + Use this function to obtain the information stored in the profile's + manufacturer tag. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :returns: A string containing the internal profile information stored in + an ICC tag. + :exception PyCMSError: + """ + try: + # add an extra newline to preserve pyCMS compatibility + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + return (profile.profile.manufacturer or "") + "\n" + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def getProfileModel(profile): + """ + (pyCMS) Gets the model for the given profile. + + If ``profile`` isn't a valid CmsProfile object or filename to a profile, a + :exc:`PyCMSError` is raised. + + If an error occurs while trying to obtain the model tag, + a :exc:`PyCMSError` is raised. + + Use this function to obtain the information stored in the profile's + model tag. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :returns: A string containing the internal profile information stored in + an ICC tag. + :exception PyCMSError: + """ + + try: + # add an extra newline to preserve pyCMS compatibility + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + return (profile.profile.model or "") + "\n" + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def getProfileDescription(profile): + """ + (pyCMS) Gets the description for the given profile. + + If ``profile`` isn't a valid CmsProfile object or filename to a profile, a + :exc:`PyCMSError` is raised. + + If an error occurs while trying to obtain the description tag, + a :exc:`PyCMSError` is raised. + + Use this function to obtain the information stored in the profile's + description tag. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :returns: A string containing the internal profile information stored in an + ICC tag. + :exception PyCMSError: + """ + + try: + # add an extra newline to preserve pyCMS compatibility + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + return (profile.profile.profile_description or "") + "\n" + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def getDefaultIntent(profile): + """ + (pyCMS) Gets the default intent name for the given profile. + + If ``profile`` isn't a valid CmsProfile object or filename to a profile, a + :exc:`PyCMSError` is raised. + + If an error occurs while trying to obtain the default intent, a + :exc:`PyCMSError` is raised. + + Use this function to determine the default (and usually best optimized) + rendering intent for this profile. Most profiles support multiple + rendering intents, but are intended mostly for one type of conversion. + If you wish to use a different intent than returned, use + ImageCms.isIntentSupported() to verify it will work first. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :returns: Integer 0-3 specifying the default rendering intent for this + profile. + + ImageCms.Intent.PERCEPTUAL = 0 (DEFAULT) + ImageCms.Intent.RELATIVE_COLORIMETRIC = 1 + ImageCms.Intent.SATURATION = 2 + ImageCms.Intent.ABSOLUTE_COLORIMETRIC = 3 + + see the pyCMS documentation for details on rendering intents and what + they do. + :exception PyCMSError: + """ + + try: + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + return profile.profile.rendering_intent + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def isIntentSupported(profile, intent, direction): + """ + (pyCMS) Checks if a given intent is supported. + + Use this function to verify that you can use your desired + ``intent`` with ``profile``, and that ``profile`` can be used for the + input/output/proof profile as you desire. + + Some profiles are created specifically for one "direction", can cannot + be used for others. Some profiles can only be used for certain + rendering intents, so it's best to either verify this before trying + to create a transform with them (using this function), or catch the + potential :exc:`PyCMSError` that will occur if they don't + support the modes you select. + + :param profile: EITHER a valid CmsProfile object, OR a string of the + filename of an ICC profile. + :param intent: Integer (0-3) specifying the rendering intent you wish to + use with this profile + + ImageCms.Intent.PERCEPTUAL = 0 (DEFAULT) + ImageCms.Intent.RELATIVE_COLORIMETRIC = 1 + ImageCms.Intent.SATURATION = 2 + ImageCms.Intent.ABSOLUTE_COLORIMETRIC = 3 + + see the pyCMS documentation for details on rendering intents and what + they do. + :param direction: Integer specifying if the profile is to be used for + input, output, or proof + + INPUT = 0 (or use ImageCms.Direction.INPUT) + OUTPUT = 1 (or use ImageCms.Direction.OUTPUT) + PROOF = 2 (or use ImageCms.Direction.PROOF) + + :returns: 1 if the intent/direction are supported, -1 if they are not. + :exception PyCMSError: + """ + + try: + if not isinstance(profile, ImageCmsProfile): + profile = ImageCmsProfile(profile) + # FIXME: I get different results for the same data w. different + # compilers. Bug in LittleCMS or in the binding? + if profile.profile.is_intent_supported(intent, direction): + return 1 + else: + return -1 + except (AttributeError, OSError, TypeError, ValueError) as v: + raise PyCMSError(v) from v + + +def versions(): + """ + (pyCMS) Fetches versions. + """ + + return VERSION, core.littlecms_version, sys.version.split()[0], Image.__version__ |