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// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "core/fpdfapi/page/pageint.h"
#include "testing/gtest/include/gtest/gtest.h"
TEST(CPDF_DeviceCSTest, GetRGBFromGray) {
float R;
float G;
float B;
CPDF_DeviceCS deviceGray(nullptr, PDFCS_DEVICEGRAY);
// Test normal values. For gray, only first value from buf should be used.
float buf[3] = {0.43f, 0.11f, 0.34f};
ASSERT_TRUE(deviceGray.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.43f, R);
EXPECT_FLOAT_EQ(0.43f, G);
EXPECT_FLOAT_EQ(0.43f, B);
buf[0] = 0.872f;
ASSERT_TRUE(deviceGray.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.872f, R);
EXPECT_FLOAT_EQ(0.872f, G);
EXPECT_FLOAT_EQ(0.872f, B);
// Test boundary values
buf[0] = {0.0f};
ASSERT_TRUE(deviceGray.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.0f, R);
EXPECT_FLOAT_EQ(0.0f, G);
EXPECT_FLOAT_EQ(0.0f, B);
buf[0] = 1.0f;
ASSERT_TRUE(deviceGray.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(1.0f, R);
EXPECT_FLOAT_EQ(1.0f, G);
EXPECT_FLOAT_EQ(1.0f, B);
// Test out of range values
buf[0] = -0.01f;
ASSERT_TRUE(deviceGray.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.0f, R);
EXPECT_FLOAT_EQ(0.0f, G);
EXPECT_FLOAT_EQ(0.0f, B);
buf[0] = 12.5f;
ASSERT_TRUE(deviceGray.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(1.0f, R);
EXPECT_FLOAT_EQ(1.0f, G);
EXPECT_FLOAT_EQ(1.0f, B);
}
TEST(CPDF_DeviceCSTest, GetRGBFromRGB) {
float R;
float G;
float B;
CPDF_DeviceCS deviceRGB(nullptr, PDFCS_DEVICERGB);
// Test normal values
float buf[3] = {0.13f, 1.0f, 0.652f};
ASSERT_TRUE(deviceRGB.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.13f, R);
EXPECT_FLOAT_EQ(1.0f, G);
EXPECT_FLOAT_EQ(0.652f, B);
buf[0] = 0.0f;
buf[1] = 0.52f;
buf[2] = 0.78f;
ASSERT_TRUE(deviceRGB.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.0f, R);
EXPECT_FLOAT_EQ(0.52f, G);
EXPECT_FLOAT_EQ(0.78f, B);
// Test out of range values
buf[0] = -10.5f;
buf[1] = 100.0f;
ASSERT_TRUE(deviceRGB.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.0f, R);
EXPECT_FLOAT_EQ(1.0f, G);
EXPECT_FLOAT_EQ(0.78f, B);
}
TEST(CPDF_DeviceCSTest, GetRGBFromCMYK) {
float R;
float G;
float B;
CPDF_DeviceCS deviceCMYK(nullptr, PDFCS_DEVICECMYK);
// Test normal values
float buf[4] = {0.6f, 0.5f, 0.3f, 0.9f};
ASSERT_TRUE(deviceCMYK.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.0627451f, R);
EXPECT_FLOAT_EQ(0.0627451f, G);
EXPECT_FLOAT_EQ(0.10588236f, B);
buf[0] = 0.15f;
buf[2] = 0.0f;
ASSERT_TRUE(deviceCMYK.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.2f, R);
EXPECT_FLOAT_EQ(0.0862745f, G);
EXPECT_FLOAT_EQ(0.16470589f, B);
buf[2] = 1.0f;
buf[3] = 0.0f;
ASSERT_TRUE(deviceCMYK.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.85098046f, R);
EXPECT_FLOAT_EQ(0.552941f, G);
EXPECT_FLOAT_EQ(0.15686275f, B);
// Test out of range values
buf[2] = 1.5f;
buf[3] = -0.6f;
ASSERT_TRUE(deviceCMYK.GetRGB(buf, &R, &G, &B));
EXPECT_FLOAT_EQ(0.85098046f, R);
EXPECT_FLOAT_EQ(0.552941f, G);
EXPECT_FLOAT_EQ(0.15686275f, B);
}
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