113d05fa7b
This reverts commiteb733fbf56. Reason for revert: Revert patch was automatically merged incorrectly? Original change's description: > Revert "WIP: Skia support library for ICC tasks" > > This reverts commitfc8dc3194a. > > Reason for revert: Breaks Build-Mac-Clang-Arm7-{Debug,Release}-iOS builds. > Example tasks: > * https://chromium-swarm.appspot.com/task?id=3322f668620b9e10&refresh=10 > * https://chromium-swarm.appspot.com/task?id=332296146331e810&refresh=10 > > Original change's description: > > WIP: Skia support library for ICC tasks > > > > As a starting point, this would be mostly trivial to implement using > > SkColorSpace. > > > > This also would give us the flexibility to begin to move all of > > the ICC related code from SkColorSpace to SkICC. > > > > What are the advantages of moving this away from SkColorSpace? > > (1) A long term goal (once Chrome uses SkCodec), might be to > > move SkColorSpace::MakeICC() out of the public API. That way, > > we can guarantee that we can draw to/from *any* SkColorSpace. > > (2) Keeps SkColorSpace separate from ICC-specific representations > > like SkColorSpaceTransferFn etc. > > > > BUG=skia: > > > > Change-Id: Iddeb9903221fb57fbfc01218d8641c928b4a5165 > > Reviewed-on: https://skia-review.googlesource.com/5676 > > Commit-Queue: Matt Sarett <msarett@google.com> > > Reviewed-by: Brian Osman <brianosman@google.com> > > Reviewed-by: Mike Reed <reed@google.com> > > > > TBR=mtklein@google.com,msarett@google.com,brianosman@google.com,reed@google.com,reviews@skia.org > BUG=skia: > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > > Change-Id: Ibdf272fce25892402bd3e85595fb8814cdf59856 > Reviewed-on: https://skia-review.googlesource.com/6232 > Commit-Queue: Ravi Mistry <rmistry@google.com> > Reviewed-by: Ravi Mistry <rmistry@google.com> > TBR=mtklein@google.com,rmistry@google.com,msarett@google.com,reviews@skia.org,brianosman@google.com,reed@google.com BUG=skia: NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true Change-Id: I68b1624cfab8adfe31b17e1193a7766507dec8b0 Reviewed-on: https://skia-review.googlesource.com/6233 Commit-Queue: Ravi Mistry <rmistry@google.com> Reviewed-by: Ravi Mistry <rmistry@google.com>
74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkICC_DEFINED
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#define SkICC_DEFINED
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#include "SkRefCnt.h"
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struct SkColorSpaceTransferFn;
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class SkColorSpace;
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class SkData;
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class SkMatrix44;
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class SK_API SkICC : public SkRefCnt {
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public:
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/**
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* Parse an ICC profile.
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*
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* Returns nullptr if the data is not a valid ICC profile or if the profile
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* input space is not RGB.
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*/
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static sk_sp<SkICC> Make(const void*, size_t);
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/**
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* If the gamut can be represented as transformation into XYZ D50, returns
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* true and sets the proper values in |toXYZD50|.
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*
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* If not, returns false. This indicates that the ICC data is too complex
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* to isolate a simple gamut transformation.
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*/
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bool toXYZD50(SkMatrix44* toXYZD50) const;
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/**
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* If the transfer function can be represented as coefficients to the standard
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* equation, returns true and sets |fn| to the proper values.
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*
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* If not, returns false. This indicates one of the following:
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* (1) The R, G, and B transfer functions are not the same.
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* (2) The transfer function is represented as a table that we have not managed
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* to match to a standard curve.
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* (3) The ICC data is too complex to isolate a single transfer function.
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*/
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bool isNumericalTransferFn(SkColorSpaceTransferFn* fn) const;
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/**
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* If the transfer function can be approximated as coefficients to the standard
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* equation, returns true and sets |fn| to the proper values.
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*
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* If not, returns false. This indicates one of the following:
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* (1) The R, G, and B transfer functions are not the same.
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* (2) The transfer function is represented as a table that is not increasing with
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* end points at zero and one.
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* (3) The ICC data is too complex to isolate a single transfer function.
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*/
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bool approximateNumericalTransferFn(SkColorSpaceTransferFn* fn) const;
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/**
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* Write an ICC profile with transfer function |fn| and gamut |toXYZD50|.
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*/
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static sk_sp<SkData> WriteToICC(const SkColorSpaceTransferFn& fn, const SkMatrix44& toXYZD50);
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private:
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SkICC(sk_sp<SkColorSpace> colorSpace);
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sk_sp<SkColorSpace> fColorSpace;
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};
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#endif
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