1 /*
2 * Copyright 2019 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 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
18 #define LOG_TAG "SamplingTest"
19
20 #include <chrono>
21 #include <thread>
22
23 #include <binder/IPCThreadState.h>
24 #include <binder/ProcessState.h>
25 #include <gui/IRegionSamplingListener.h>
26 #include <gui/ISurfaceComposer.h>
27 #include <gui/SurfaceComposerClient.h>
28 #include <gui/SurfaceControl.h>
29 #include <private/gui/ComposerService.h>
30 #include <utils/Trace.h>
31
32 using namespace std::chrono_literals;
33
34 namespace android {
35
36 class Button : public BnRegionSamplingListener {
37 public:
Button(const char * name,const Rect & samplingArea)38 Button(const char* name, const Rect& samplingArea) {
39 sp<SurfaceComposerClient> client = new SurfaceComposerClient;
40
41 mButton = client->createSurface(String8(name), 0, 0, PIXEL_FORMAT_RGBA_8888,
42 ISurfaceComposerClient::eFXSurfaceColor);
43
44 const int32_t width = samplingArea.getWidth();
45 const int32_t height = samplingArea.getHeight();
46
47 SurfaceComposerClient::Transaction{}
48 .setLayer(mButton, 0x7fffffff)
49 .setCrop_legacy(mButton,
50 {0, 0, width - 2 * BUTTON_PADDING, height - 2 * BUTTON_PADDING})
51 .setPosition(mButton, samplingArea.left + BUTTON_PADDING,
52 samplingArea.top + BUTTON_PADDING)
53 .setColor(mButton, half3{1, 1, 1})
54 .show(mButton)
55 .apply();
56
57 mButtonBlend = client->createSurface(String8(name) + "Blend", 0, 0, PIXEL_FORMAT_RGBA_8888,
58 ISurfaceComposerClient::eFXSurfaceColor);
59
60 SurfaceComposerClient::Transaction{}
61 .setLayer(mButtonBlend, 0x7ffffffe)
62 .setCrop_legacy(mButtonBlend,
63 {0, 0, width - 2 * SAMPLE_AREA_PADDING,
64 height - 2 * SAMPLE_AREA_PADDING})
65 .setPosition(mButtonBlend, samplingArea.left + SAMPLE_AREA_PADDING,
66 samplingArea.top + SAMPLE_AREA_PADDING)
67 .setColor(mButtonBlend, half3{1, 1, 1})
68 .setAlpha(mButtonBlend, 0.2)
69 .show(mButtonBlend)
70 .apply(true);
71
72 const bool HIGHLIGHT_SAMPLING_AREA = false;
73 if (HIGHLIGHT_SAMPLING_AREA) {
74 mSamplingArea =
75 client->createSurface(String8("SamplingArea"), 0, 0, PIXEL_FORMAT_RGBA_8888,
76 ISurfaceComposerClient::eFXSurfaceColor);
77
78 SurfaceComposerClient::Transaction{}
79 .setLayer(mSamplingArea, 0x7ffffffd)
80 .setCrop_legacy(mSamplingArea, {0, 0, 100, 32})
81 .setPosition(mSamplingArea, 490, 1606)
82 .setColor(mSamplingArea, half3{0, 1, 0})
83 .setAlpha(mSamplingArea, 0.1)
84 .show(mSamplingArea)
85 .apply();
86 }
87 }
88
getStopLayerHandle()89 sp<IBinder> getStopLayerHandle() { return mButtonBlend->getHandle(); }
90
91 private:
92 static const int32_t BLEND_WIDTH = 2;
93 static const int32_t SAMPLE_AREA_PADDING = 8;
94 static const int32_t BUTTON_PADDING = BLEND_WIDTH + SAMPLE_AREA_PADDING;
95
setColor(float color)96 void setColor(float color) {
97 const float complement = std::fmod(color + 0.5f, 1.0f);
98 SurfaceComposerClient::Transaction{}
99 .setColor(mButton, half3{complement, complement, complement})
100 .setColor(mButtonBlend, half3{color, color, color})
101 .apply();
102 }
103
onSampleCollected(float medianLuma)104 void onSampleCollected(float medianLuma) override {
105 ATRACE_CALL();
106 setColor(medianLuma);
107 }
108
109 sp<SurfaceComposerClient> mClient;
110 sp<SurfaceControl> mButton;
111 sp<SurfaceControl> mButtonBlend;
112 sp<SurfaceControl> mSamplingArea;
113 };
114
115 } // namespace android
116
117 using namespace android;
118
main(int,const char **)119 int main(int, const char**) {
120 const Rect homeButtonArea{490, 1606, 590, 1654};
121 sp<android::Button> homeButton = new android::Button("HomeButton", homeButtonArea);
122 const Rect backButtonArea{200, 1606, 248, 1654};
123 sp<android::Button> backButton = new android::Button("BackButton", backButtonArea);
124
125 sp<ISurfaceComposer> composer = ComposerService::getComposerService();
126 composer->addRegionSamplingListener(homeButtonArea, homeButton->getStopLayerHandle(),
127 homeButton);
128 composer->addRegionSamplingListener(backButtonArea, backButton->getStopLayerHandle(),
129 backButton);
130
131 ProcessState::self()->startThreadPool();
132 IPCThreadState::self()->joinThreadPool();
133
134 return 0;
135 }
136