mirror of https://github.com/google/gemma.cpp.git
73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
// Copyright 2024 Google LLC
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// SPDX-License-Identifier: Apache-2.0
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "paligemma/image.h"
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#include <string>
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#include "gtest/gtest.h"
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namespace gcpp {
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namespace {
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float Normalize(int value) { return 2.0f * (value / 255.0f) - 1.0f; }
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TEST(ImageTest, BasicFunctionality) {
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return; // Need to figure out how to get the external path for the test file.
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std::string path;
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Image image;
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EXPECT_EQ(image.width(), 0);
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EXPECT_EQ(image.height(), 0);
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EXPECT_EQ(image.size(), 0);
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ASSERT_TRUE(image.ReadPPM(path));
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EXPECT_EQ(image.width(), 256);
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EXPECT_EQ(image.height(), 341);
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EXPECT_EQ(image.size(), 256 * 341 * 3);
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// Spot check a few values.
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EXPECT_EQ(image.data()[0], Normalize(160));
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EXPECT_EQ(image.data()[1], Normalize(184));
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EXPECT_EQ(image.data()[2], Normalize(188));
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EXPECT_EQ(image.data()[3], Normalize(163));
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EXPECT_EQ(image.data()[4], Normalize(185));
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EXPECT_EQ(image.data()[5], Normalize(189));
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EXPECT_EQ(image.data()[30], Normalize(164));
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EXPECT_EQ(image.data()[31], Normalize(185));
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EXPECT_EQ(image.data()[32], Normalize(191));
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EXPECT_EQ(image.data()[33], Normalize(164));
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EXPECT_EQ(image.data()[34], Normalize(185));
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EXPECT_EQ(image.data()[35], Normalize(191));
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image.Resize();
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// Check first and last pixel.
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EXPECT_EQ(image.data()[0], Normalize(160));
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EXPECT_EQ(image.data()[1], Normalize(184));
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EXPECT_EQ(image.data()[2], Normalize(188));
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EXPECT_EQ(image.data()[image.size() - 3], Normalize(90));
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EXPECT_EQ(image.data()[image.size() - 2], Normalize(132));
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EXPECT_EQ(image.data()[image.size() - 1], Normalize(122));
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// Extract two patches.
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float patch[588];
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image.GetPatch(0, patch);
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EXPECT_EQ(patch[0], Normalize(160));
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EXPECT_EQ(patch[1], Normalize(184));
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EXPECT_EQ(patch[2], Normalize(188));
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image.GetPatch(18, patch);
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for (int i = 0; i < 10; ++i) {
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EXPECT_EQ(patch[i], image.data()[(14 * 224 + 2 * 14) * 3 + i]);
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}
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}
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} // namespace
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} // namespace gcpp
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