1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/*
* Copyright (C) 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.
*/
#pragma once
#include <gui/SyncScreenCaptureListener.h>
#include <ui/Rect.h>
#include <utils/String8.h>
#include <functional>
#include "TransactionUtils.h"
namespace android {
namespace {
// A ScreenCapture is a screenshot from SurfaceFlinger that can be used to check
// individual pixel values for testing purposes.
class ScreenCapture : public RefBase {
public:
static status_t captureDisplay(DisplayCaptureArgs& captureArgs,
ScreenCaptureResults& captureResults) {
const auto sf = ComposerService::getComposerService();
SurfaceComposerClient::Transaction().apply(true);
captureArgs.dataspace = ui::Dataspace::V0_SRGB;
const sp<SyncScreenCaptureListener> captureListener = new SyncScreenCaptureListener();
status_t status = sf->captureDisplay(captureArgs, captureListener);
if (status != NO_ERROR) {
return status;
}
captureResults = captureListener->waitForResults();
return captureResults.result;
}
static void captureScreen(std::unique_ptr<ScreenCapture>* sc) {
captureScreen(sc, SurfaceComposerClient::getInternalDisplayToken());
}
static void captureScreen(std::unique_ptr<ScreenCapture>* sc, sp<IBinder> displayToken) {
DisplayCaptureArgs args;
args.displayToken = displayToken;
captureDisplay(sc, args);
}
static void captureDisplay(std::unique_ptr<ScreenCapture>* sc,
DisplayCaptureArgs& captureArgs) {
ScreenCaptureResults captureResults;
ASSERT_EQ(NO_ERROR, captureDisplay(captureArgs, captureResults));
*sc = std::make_unique<ScreenCapture>(captureResults.buffer);
}
static status_t captureLayers(LayerCaptureArgs& captureArgs,
ScreenCaptureResults& captureResults) {
const auto sf = ComposerService::getComposerService();
SurfaceComposerClient::Transaction().apply(true);
captureArgs.dataspace = ui::Dataspace::V0_SRGB;
const sp<SyncScreenCaptureListener> captureListener = new SyncScreenCaptureListener();
status_t status = sf->captureLayers(captureArgs, captureListener);
if (status != NO_ERROR) {
return status;
}
captureResults = captureListener->waitForResults();
return captureResults.result;
}
static void captureLayers(std::unique_ptr<ScreenCapture>* sc, LayerCaptureArgs& captureArgs) {
ScreenCaptureResults captureResults;
ASSERT_EQ(NO_ERROR, captureLayers(captureArgs, captureResults));
*sc = std::make_unique<ScreenCapture>(captureResults.buffer);
}
void expectColor(const Rect& rect, const Color& color, uint8_t tolerance = 0) {
ASSERT_NE(nullptr, mOutBuffer);
ASSERT_NE(nullptr, mPixels);
ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mOutBuffer->getPixelFormat());
TransactionUtils::expectBufferColor(mOutBuffer, mPixels, rect, color, tolerance);
}
void expectBorder(const Rect& rect, const Color& color, uint8_t tolerance = 0) {
ASSERT_NE(nullptr, mOutBuffer);
ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mOutBuffer->getPixelFormat());
const bool leftBorder = rect.left > 0;
const bool topBorder = rect.top > 0;
const bool rightBorder = rect.right < int32_t(mOutBuffer->getWidth());
const bool bottomBorder = rect.bottom < int32_t(mOutBuffer->getHeight());
if (topBorder) {
Rect top(rect.left, rect.top - 1, rect.right, rect.top);
if (leftBorder) {
top.left -= 1;
}
if (rightBorder) {
top.right += 1;
}
expectColor(top, color, tolerance);
}
if (leftBorder) {
Rect left(rect.left - 1, rect.top, rect.left, rect.bottom);
expectColor(left, color, tolerance);
}
if (rightBorder) {
Rect right(rect.right, rect.top, rect.right + 1, rect.bottom);
expectColor(right, color, tolerance);
}
if (bottomBorder) {
Rect bottom(rect.left, rect.bottom, rect.right, rect.bottom + 1);
if (leftBorder) {
bottom.left -= 1;
}
if (rightBorder) {
bottom.right += 1;
}
expectColor(bottom, color, tolerance);
}
}
void expectQuadrant(const Rect& rect, const Color& topLeft, const Color& topRight,
const Color& bottomLeft, const Color& bottomRight, bool filtered = false,
uint8_t tolerance = 0) {
ASSERT_TRUE((rect.right - rect.left) % 2 == 0 && (rect.bottom - rect.top) % 2 == 0);
const int32_t centerX = rect.left + (rect.right - rect.left) / 2;
const int32_t centerY = rect.top + (rect.bottom - rect.top) / 2;
// avoid checking borders due to unspecified filtering behavior
const int32_t offsetX = filtered ? 2 : 0;
const int32_t offsetY = filtered ? 2 : 0;
expectColor(Rect(rect.left, rect.top, centerX - offsetX, centerY - offsetY), topLeft,
tolerance);
expectColor(Rect(centerX + offsetX, rect.top, rect.right, centerY - offsetY), topRight,
tolerance);
expectColor(Rect(rect.left, centerY + offsetY, centerX - offsetX, rect.bottom), bottomLeft,
tolerance);
expectColor(Rect(centerX + offsetX, centerY + offsetY, rect.right, rect.bottom),
bottomRight, tolerance);
}
void checkPixel(uint32_t x, uint32_t y, uint8_t r, uint8_t g, uint8_t b) {
ASSERT_NE(nullptr, mOutBuffer);
ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mOutBuffer->getPixelFormat());
const uint8_t* pixel = mPixels + (4 * (y * mOutBuffer->getStride() + x));
if (r != pixel[0] || g != pixel[1] || b != pixel[2]) {
String8 err(String8::format("pixel @ (%3d, %3d): "
"expected [%3d, %3d, %3d], got [%3d, %3d, %3d]",
x, y, r, g, b, pixel[0], pixel[1], pixel[2]));
EXPECT_EQ(String8(), err) << err.string();
}
}
Color getPixelColor(uint32_t x, uint32_t y) {
if (!mOutBuffer || mOutBuffer->getPixelFormat() != HAL_PIXEL_FORMAT_RGBA_8888) {
return {0, 0, 0, 0};
}
const uint8_t* pixel = mPixels + (4 * (y * mOutBuffer->getStride() + x));
return {pixel[0], pixel[1], pixel[2], pixel[3]};
}
void expectFGColor(uint32_t x, uint32_t y) { checkPixel(x, y, 195, 63, 63); }
void expectBGColor(uint32_t x, uint32_t y) { checkPixel(x, y, 63, 63, 195); }
void expectChildColor(uint32_t x, uint32_t y) { checkPixel(x, y, 200, 200, 200); }
explicit ScreenCapture(const sp<GraphicBuffer>& outBuffer) : mOutBuffer(outBuffer) {
if (mOutBuffer) {
mOutBuffer->lock(GRALLOC_USAGE_SW_READ_OFTEN, reinterpret_cast<void**>(&mPixels));
}
}
~ScreenCapture() {
if (mOutBuffer) mOutBuffer->unlock();
}
private:
sp<GraphicBuffer> mOutBuffer;
uint8_t* mPixels = nullptr;
};
} // namespace
} // namespace android
|
