| /* |
| * Copyright 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // TODO(b/129481165): remove the #pragma below and fix conversion issues |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wconversion" |
| |
| #undef LOG_TAG |
| #define LOG_TAG "RegionSamplingTest" |
| |
| #include <ui/Transform.h> |
| |
| #include <gmock/gmock.h> |
| #include <gtest/gtest.h> |
| #include <array> |
| #include <limits> |
| |
| #include "RegionSamplingThread.h" |
| |
| namespace android { |
| |
| struct RegionSamplingTest : testing::Test { |
| public: |
| static uint32_t constexpr kBlack = 0; |
| static uint32_t constexpr kWhite = std::numeric_limits<uint32_t>::max(); |
| static int constexpr kWidth = 98; |
| static int constexpr kStride = 100; |
| static int constexpr kHeight = 29; |
| static int constexpr kOrientation = ui::Transform::ROT_0; |
| std::array<uint32_t, kHeight * kStride> buffer; |
| Rect const whole_area{0, 0, kWidth, kHeight}; |
| }; |
| |
| TEST_F(RegionSamplingTest, calculate_mean_white) { |
| std::fill(buffer.begin(), buffer.end(), kWhite); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, whole_area), |
| testing::FloatEq(1.0f)); |
| } |
| |
| TEST_F(RegionSamplingTest, calculate_mean_black) { |
| std::fill(buffer.begin(), buffer.end(), kBlack); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, whole_area), |
| testing::FloatEq(0.0f)); |
| } |
| |
| TEST_F(RegionSamplingTest, calculate_mean_partial_region) { |
| auto const halfway_down = kHeight >> 1; |
| auto const half = halfway_down * kStride; |
| Rect const partial_region = {whole_area.left, whole_area.top, whole_area.right, |
| whole_area.top + halfway_down}; |
| std::fill(buffer.begin(), buffer.begin() + half, 0); |
| std::fill(buffer.begin() + half, buffer.end(), kWhite); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, partial_region), |
| testing::FloatEq(0.0f)); |
| } |
| |
| TEST_F(RegionSamplingTest, calculate_mean_mixed_values) { |
| std::generate(buffer.begin(), buffer.end(), [n = 0]() mutable { |
| uint32_t const pixel = (n % std::numeric_limits<uint8_t>::max()) << ((n % 3) * CHAR_BIT); |
| n++; |
| return pixel; |
| }); |
| |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, whole_area), |
| testing::FloatNear(0.16f, 0.01f)); |
| } |
| |
| TEST_F(RegionSamplingTest, bimodal_tiebreaker) { |
| std::generate(buffer.begin(), buffer.end(), |
| [n = 0]() mutable { return (n++ % 2) ? kBlack : kWhite; }); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, whole_area), |
| testing::FloatEq(0.5f)); |
| } |
| |
| TEST_F(RegionSamplingTest, bounds_checking) { |
| std::generate(buffer.begin(), buffer.end(), |
| [n = 0]() mutable { return (n++ > (kStride * kHeight >> 1)) ? kBlack : kWhite; }); |
| |
| Rect invalid_region{0, 0, 4, kHeight + 1}; |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, invalid_region), |
| testing::Eq(0.0)); |
| |
| invalid_region = Rect{0, 0, -4, kHeight}; |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, invalid_region), |
| testing::Eq(0.0)); |
| |
| invalid_region = Rect{3, 0, 2, 0}; |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, invalid_region), |
| testing::Eq(0.0)); |
| |
| invalid_region = Rect{0, 3, 0, 2}; |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, kOrientation, invalid_region), |
| testing::Eq(0.0)); |
| } |
| |
| // workaround for b/133849373 |
| TEST_F(RegionSamplingTest, orientation_90) { |
| std::generate(buffer.begin(), buffer.end(), |
| [n = 0]() mutable { return (n++ > (kStride * kHeight >> 1)) ? kBlack : kWhite; }); |
| |
| Rect tl_region{0, 0, 4, 4}; |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_0, |
| tl_region), |
| testing::Eq(1.0)); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_180, |
| tl_region), |
| testing::Eq(1.0)); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_90, |
| tl_region), |
| testing::Eq(0.0)); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_270, |
| tl_region), |
| testing::Eq(0.0)); |
| |
| Rect br_region{kWidth - 4, kHeight - 4, kWidth, kHeight}; |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_0, |
| br_region), |
| testing::Eq(0.0)); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_180, |
| br_region), |
| testing::Eq(0.0)); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_90, |
| br_region), |
| testing::Eq(1.0)); |
| EXPECT_THAT(sampleArea(buffer.data(), kWidth, kHeight, kStride, ui::Transform::ROT_270, |
| br_region), |
| testing::Eq(1.0)); |
| } |
| |
| } // namespace android |
| |
| // TODO(b/129481165): remove the #pragma below and fix conversion issues |
| #pragma clang diagnostic pop // ignored "-Wconversion" |