1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <sstream>
18 #include <android/hardware/graphics/common/1.0/types.h>
19
20 #include "Hwc2TestPixelComparator.h"
21
22 using android::hardware::graphics::common::V1_0::BufferUsage;
23
getPixel(int32_t x,int32_t y,uint32_t stride,uint8_t * img) const24 uint32_t ComparatorResult::getPixel(int32_t x, int32_t y, uint32_t stride,
25 uint8_t* img) const
26 {
27 uint32_t r = img[(y * stride + x) * 4 + 0];
28 uint32_t g = img[(y * stride + x) * 4 + 1];
29 uint32_t b = img[(y * stride + x) * 4 + 2];
30 uint32_t a = img[(y * stride + x) * 4 + 3];
31
32 uint32_t pixel = 0;
33 pixel |= r;
34 pixel |= g << 8;
35 pixel |= b << 16;
36 pixel |= a << 24;
37 return pixel;
38 }
39
CompareBuffers(android::sp<android::GraphicBuffer> & resultBuffer,android::sp<android::GraphicBuffer> & expectedBuffer)40 void ComparatorResult::CompareBuffers(
41 android::sp<android::GraphicBuffer>& resultBuffer,
42 android::sp<android::GraphicBuffer>& expectedBuffer)
43 {
44 uint8_t* resultBufferImg;
45 uint8_t* expectedBufferImg;
46 resultBuffer->lock(static_cast<uint32_t>(BufferUsage::CPU_READ_OFTEN),
47 (void**)(&resultBufferImg));
48
49 expectedBuffer->lock(static_cast<uint32_t>(BufferUsage::CPU_READ_OFTEN),
50 (void**)(&expectedBufferImg));
51 mComparisons.clear();
52 int32_t mDifferentPixelCount = 0;
53 int32_t mBlankPixelCount = 0;
54
55 for (uint32_t y = 0; y < resultBuffer->getHeight(); y++) {
56 for (uint32_t x = 0; x < resultBuffer->getWidth(); x++) {
57 uint32_t result = getPixel(x, y, resultBuffer->getStride(),
58 resultBufferImg);
59 uint32_t expected = getPixel(x, y, expectedBuffer->getStride(),
60 expectedBufferImg);
61
62 if (result == 0)
63 mBlankPixelCount++;
64
65 if (result != expected)
66 mDifferentPixelCount++;
67
68 mComparisons.emplace_back(std::make_tuple(x, y, result, expected));
69 }
70 }
71 resultBuffer->unlock();
72 expectedBuffer->unlock();
73 }
74
pixelDiff(uint32_t x,uint32_t y,uint32_t resultPixel,uint32_t expectedPixel) const75 std::string ComparatorResult::pixelDiff(uint32_t x, uint32_t y,
76 uint32_t resultPixel, uint32_t expectedPixel) const
77 {
78 uint32_t resultAlpha = (resultPixel >> 24) & 0xFF;
79 uint32_t resultBlue = (resultPixel >> 16) & 0xFF;
80 uint32_t resultGreen = (resultPixel >> 8) & 0xFF;
81 uint32_t resultRed = resultPixel & 0xFF;
82
83 uint32_t expectedAlpha = (expectedPixel >> 24) & 0xFF;
84 uint32_t expectedBlue = (expectedPixel >> 16) & 0xFF;
85 uint32_t expectedGreen = (expectedPixel >> 8) & 0xFF;
86 uint32_t expectedRed = expectedPixel & 0xFF;
87
88 std::ostringstream stream;
89
90 stream << "x: " << x << " y: " << y << std::endl;
91 stream << std::hex;
92 stream << "Result pixel: " << resultRed << "|" << resultGreen << "|"
93 << resultBlue << "|" << resultAlpha << std::endl;
94
95 stream << "Expected pixel: " << expectedRed << "|" << expectedGreen << "|"
96 << expectedBlue << "|" << expectedAlpha << std::endl;
97
98 return stream.str();
99 }
100
dumpComparison() const101 std::string ComparatorResult::dumpComparison() const
102 {
103 std::ostringstream stream;
104 stream << "Number of different pixels: " << mDifferentPixelCount;
105
106 for (const auto& comparison : mComparisons) {
107 if (std::get<2>(comparison) != std::get<3>(comparison))
108 stream << pixelDiff(std::get<0>(comparison),
109 std::get<1>(comparison), std::get<2>(comparison),
110 std::get<3>(comparison));
111 }
112 return stream.str();
113 }
114