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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_ICC_PROFILE_H_
#define UI_GFX_ICC_PROFILE_H_
#include <stdint.h>
#include <set>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/ref_counted.h"
#include "third_party/skia/modules/skcms/skcms.h"
#include "ui/gfx/color_space.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
namespace IPC {
template <class P>
struct ParamTraits;
} // namespace IPC
namespace gfx {
// Used to represent a full ICC profile, usually retrieved from a monitor. It
// can be lossily compressed into a ColorSpace object. This structure should
// only be sent from higher-privilege processes to lower-privilege processes,
// as parsing this structure is not secure.
class COLOR_SPACE_EXPORT ICCProfile {
public:
ICCProfile();
ICCProfile(ICCProfile&& other);
ICCProfile(const ICCProfile& other);
ICCProfile& operator=(ICCProfile&& other);
ICCProfile& operator=(const ICCProfile& other);
~ICCProfile();
bool operator==(const ICCProfile& other) const;
// Returns true if this profile was successfully parsed by SkICC and will
// return a valid ColorSpace.
bool IsValid() const;
// Create directly from profile data. This function should be called only
// in the browser process (and the results from there sent to other
// processes).
static ICCProfile FromData(const void* icc_profile, size_t size);
// Create a profile for a color space. Returns an invalid profile if the
// specified space is not expressable as an ICCProfile.
static ICCProfile FromColorSpace(const gfx::ColorSpace& color_space);
// Return a ColorSpace that best represents this ICCProfile.
ColorSpace GetColorSpace() const;
// Return a ColorSpace with the primaries from this ICCProfile and an
// sRGB transfer function.
ColorSpace GetPrimariesOnlyColorSpace() const;
// Returns true if GetColorSpace returns an accurate representation of this
// ICCProfile. This could be false if the result of GetColorSpace had to
// approximate transfer functions.
bool IsColorSpaceAccurate() const;
// Return the data for the profile.
std::vector<char> GetData() const;
private:
class Internals : public base::RefCountedThreadSafe<ICCProfile::Internals> {
public:
explicit Internals(std::vector<char>);
const std::vector<char> data_;
// True iff we can create a valid ColorSpace (and ColorTransform) from this
// object. The transform may be LUT-based (using an SkColorSpaceXform to
// compute the lut).
bool is_valid_ = false;
// True iff |to_XYZD50_| and |transfer_fn_| are accurate representations of
// the data in this profile. In this case ColorTransforms created from this
// profile will be analytic and not LUT-based.
bool is_parametric_ = false;
// The best-fit parametric primaries and transfer function.
skcms_Matrix3x3 to_XYZD50_;
skcms_TransferFunction transfer_fn_;
protected:
friend class base::RefCountedThreadSafe<ICCProfile::Internals>;
void Initialize();
virtual ~Internals();
};
scoped_refptr<Internals> internals_;
FRIEND_TEST_ALL_PREFIXES(SimpleColorSpace, BT709toSRGBICC);
FRIEND_TEST_ALL_PREFIXES(SimpleColorSpace, GetColorSpace);
friend int ::LLVMFuzzerTestOneInput(const uint8_t*, size_t);
friend class ColorSpace;
friend class ColorTransformInternal;
friend struct IPC::ParamTraits<gfx::ICCProfile>;
};
} // namespace gfx
#endif // UI_GFX_ICC_PROFILE_H_
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