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- // Copyright (c) 2016 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include <stddef.h>
- #include <stdint.h>
- #include <random>
- #include "base/at_exit.h"
- #include "base/logging.h"
- #include "ui/gfx/color_space.h"
- #include "ui/gfx/color_transform.h"
- #include "ui/gfx/icc_profile.h"
- static constexpr size_t kPixels = 256;
- static gfx::ColorTransform::TriStim pixels[kPixels];
- static void GeneratePixels(size_t hash) {
- static std::uniform_real_distribution<float> uniform(-0.1f, 1.1f);
- std::mt19937_64 random(hash);
- for (size_t i = 0; i < kPixels; ++i)
- pixels[i].SetPoint(uniform(random), uniform(random), uniform(random));
- }
- static gfx::ColorSpace test;
- static gfx::ColorSpace srgb;
- static void ColorTransform(size_t hash) {
- const gfx::ColorTransform::Options options;
- std::unique_ptr<gfx::ColorTransform> transform;
- if (hash & 2) {
- transform = gfx::ColorTransform::NewColorTransform(test, srgb, options);
- } else {
- transform = gfx::ColorTransform::NewColorTransform(srgb, test, options);
- }
- transform->Transform(pixels, kPixels);
- }
- static gfx::ColorSpace CreateRGBColorSpace(size_t hash) {
- auto primaries = static_cast<gfx::ColorSpace::PrimaryID>(
- 1 + ((hash >> 0) % (size_t)gfx::ColorSpace::PrimaryID::kMaxValue));
- auto transfer = static_cast<gfx::ColorSpace::TransferID>(
- 1 + ((hash >> 8) % (size_t)gfx::ColorSpace::TransferID::kMaxValue));
- auto matrix = static_cast<gfx::ColorSpace::MatrixID>(
- 1 + ((hash >> 16) % (size_t)gfx::ColorSpace::MatrixID::kMaxValue));
- auto range = static_cast<gfx::ColorSpace::RangeID>(
- 1 + ((hash >> 24) % (size_t)gfx::ColorSpace::RangeID::kMaxValue));
- return gfx::ColorSpace(primaries, transfer, matrix, range);
- }
- inline size_t Hash(const char* data, size_t size, size_t hash = ~0) {
- for (size_t i = 0; i < size; ++i)
- hash = hash * 131 + *data++;
- return hash;
- }
- struct Environment {
- Environment() { logging::SetMinLogLevel(logging::LOG_FATAL); }
- };
- Environment* environment = new Environment();
- extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
- base::AtExitManager at_exit;
- constexpr size_t kSizeLimit = 4 * 1024 * 1024;
- if (size < 128 || size > kSizeLimit)
- return 0;
- gfx::ICCProfile profile =
- gfx::ICCProfile::FromData(reinterpret_cast<const char*>(data), size);
- if (!profile.GetColorSpace().IsValid())
- return 0;
- test = profile.GetColorSpace();
- const size_t hash = Hash(reinterpret_cast<const char*>(data), size);
- srgb = CreateRGBColorSpace(hash);
- GeneratePixels(hash);
- ColorTransform(hash);
- return 0;
- }
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