1 /*
2  * Copyright 2018 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 #undef LOG_TAG
17 #define LOG_TAG "LayerStats"
18 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
19 
20 #include "LayerStats.h"
21 #include "DisplayHardware/HWComposer.h"
22 #include "ui/DebugUtils.h"
23 
24 #include <android-base/stringprintf.h>
25 #include <log/log.h>
26 #include <utils/Trace.h>
27 
28 namespace android {
29 
30 using base::StringAppendF;
31 using base::StringPrintf;
32 
enable()33 void LayerStats::enable() {
34     ATRACE_CALL();
35     std::lock_guard<std::mutex> lock(mMutex);
36     if (mEnabled) return;
37     mLayerShapeStatsMap.clear();
38     mEnabled = true;
39     ALOGD("Logging enabled");
40 }
41 
disable()42 void LayerStats::disable() {
43     ATRACE_CALL();
44     std::lock_guard<std::mutex> lock(mMutex);
45     if (!mEnabled) return;
46     mEnabled = false;
47     ALOGD("Logging disabled");
48 }
49 
clear()50 void LayerStats::clear() {
51     ATRACE_CALL();
52     std::lock_guard<std::mutex> lock(mMutex);
53     mLayerShapeStatsMap.clear();
54     ALOGD("Cleared current layer stats");
55 }
56 
isEnabled()57 bool LayerStats::isEnabled() {
58     return mEnabled;
59 }
60 
traverseLayerTreeStatsLocked(const std::vector<LayerProtoParser::Layer * > & layerTree,const LayerProtoParser::LayerGlobal & layerGlobal,std::vector<std::string> * const outLayerShapeVec)61 void LayerStats::traverseLayerTreeStatsLocked(
62         const std::vector<LayerProtoParser::Layer*>& layerTree,
63         const LayerProtoParser::LayerGlobal& layerGlobal,
64         std::vector<std::string>* const outLayerShapeVec) {
65     for (const auto& layer : layerTree) {
66         if (!layer) continue;
67         traverseLayerTreeStatsLocked(layer->children, layerGlobal, outLayerShapeVec);
68         std::string key = "";
69         StringAppendF(&key, ",%s", layer->type.c_str());
70         StringAppendF(&key, ",%s", layerCompositionType(layer->hwcCompositionType));
71         StringAppendF(&key, ",%d", layer->isProtected);
72         StringAppendF(&key, ",%s", layerTransform(layer->hwcTransform));
73         StringAppendF(&key, ",%s", layerPixelFormat(layer->activeBuffer.format).c_str());
74         StringAppendF(&key, ",%s", layer->dataspace.c_str());
75         StringAppendF(&key, ",%s",
76                       destinationLocation(layer->hwcFrame.left, layerGlobal.resolution[0], true));
77         StringAppendF(&key, ",%s",
78                       destinationLocation(layer->hwcFrame.top, layerGlobal.resolution[1], false));
79         StringAppendF(&key, ",%s",
80                       destinationSize(layer->hwcFrame.right - layer->hwcFrame.left,
81                                       layerGlobal.resolution[0], true));
82         StringAppendF(&key, ",%s",
83                       destinationSize(layer->hwcFrame.bottom - layer->hwcFrame.top,
84                                       layerGlobal.resolution[1], false));
85         StringAppendF(&key, ",%s", scaleRatioWH(layer).c_str());
86         StringAppendF(&key, ",%s", alpha(static_cast<float>(layer->color.a)));
87 
88         outLayerShapeVec->push_back(key);
89         ALOGV("%s", key.c_str());
90     }
91 }
92 
logLayerStats(const LayersProto & layersProto)93 void LayerStats::logLayerStats(const LayersProto& layersProto) {
94     ATRACE_CALL();
95     ALOGV("Logging");
96     auto layerGlobal = LayerProtoParser::generateLayerGlobalInfo(layersProto);
97     auto layerTree = LayerProtoParser::generateLayerTree(layersProto);
98     std::vector<std::string> layerShapeVec;
99 
100     std::lock_guard<std::mutex> lock(mMutex);
101     traverseLayerTreeStatsLocked(layerTree.topLevelLayers, layerGlobal, &layerShapeVec);
102 
103     std::string layerShapeKey =
104             StringPrintf("%d,%s,%s,%s", static_cast<int32_t>(layerShapeVec.size()),
105                          layerGlobal.colorMode.c_str(), layerGlobal.colorTransform.c_str(),
106                          layerTransform(layerGlobal.globalTransform));
107     ALOGV("%s", layerShapeKey.c_str());
108 
109     std::sort(layerShapeVec.begin(), layerShapeVec.end(), std::greater<std::string>());
110     for (auto const& s : layerShapeVec) {
111         layerShapeKey += s;
112     }
113 
114     mLayerShapeStatsMap[layerShapeKey]++;
115 }
116 
dump(std::string & result)117 void LayerStats::dump(std::string& result) {
118     ATRACE_CALL();
119     ALOGD("Dumping");
120     std::lock_guard<std::mutex> lock(mMutex);
121     result.append("Frequency,LayerCount,ColorMode,ColorTransform,Orientation\n");
122     result.append("LayerType,CompositionType,IsProtected,Transform,PixelFormat,Dataspace,");
123     result.append("DstX,DstY,DstWidth,DstHeight,WScale,HScale,Alpha\n");
124     for (auto& u : mLayerShapeStatsMap) {
125         StringAppendF(&result, "%u,%s\n", u.second, u.first.c_str());
126     }
127 }
128 
destinationLocation(int32_t location,int32_t range,bool isHorizontal)129 const char* LayerStats::destinationLocation(int32_t location, int32_t range, bool isHorizontal) {
130     static const char* locationArray[8] = {"0", "1/8", "1/4", "3/8", "1/2", "5/8", "3/4", "7/8"};
131     int32_t ratio = location * 8 / range;
132     if (ratio < 0) return "N/A";
133     if (isHorizontal) {
134         // X location is divided into 4 buckets {"0", "1/4", "1/2", "3/4"}
135         if (ratio > 6) return "3/4";
136         // use index 0, 2, 4, 6
137         return locationArray[ratio & ~1];
138     }
139     if (ratio > 7) return "7/8";
140     return locationArray[ratio];
141 }
142 
destinationSize(int32_t size,int32_t range,bool isWidth)143 const char* LayerStats::destinationSize(int32_t size, int32_t range, bool isWidth) {
144     static const char* sizeArray[8] = {"1/8", "1/4", "3/8", "1/2", "5/8", "3/4", "7/8", "1"};
145     int32_t ratio = size * 8 / range;
146     if (ratio < 0) return "N/A";
147     if (isWidth) {
148         // width is divided into 4 buckets {"1/4", "1/2", "3/4", "1"}
149         if (ratio > 6) return "1";
150         // use index 1, 3, 5, 7
151         return sizeArray[ratio | 1];
152     }
153     if (ratio > 7) return "1";
154     return sizeArray[ratio];
155 }
156 
layerTransform(int32_t transform)157 const char* LayerStats::layerTransform(int32_t transform) {
158     return getTransformName(static_cast<hwc_transform_t>(transform));
159 }
160 
layerCompositionType(int32_t compositionType)161 const char* LayerStats::layerCompositionType(int32_t compositionType) {
162     return getCompositionName(static_cast<hwc2_composition_t>(compositionType));
163 }
164 
layerPixelFormat(int32_t pixelFormat)165 std::string LayerStats::layerPixelFormat(int32_t pixelFormat) {
166     return decodePixelFormat(pixelFormat);
167 }
168 
scaleRatioWH(const LayerProtoParser::Layer * layer)169 std::string LayerStats::scaleRatioWH(const LayerProtoParser::Layer* layer) {
170     if (!layer->type.compare("ColorLayer")) return "N/A,N/A";
171     std::string ret = "";
172     if (isRotated(layer->hwcTransform)) {
173         ret += scaleRatio(layer->hwcFrame.right - layer->hwcFrame.left,
174                           static_cast<int32_t>(layer->hwcCrop.bottom - layer->hwcCrop.top));
175         ret += ",";
176         ret += scaleRatio(layer->hwcFrame.bottom - layer->hwcFrame.top,
177                           static_cast<int32_t>(layer->hwcCrop.right - layer->hwcCrop.left));
178     } else {
179         ret += scaleRatio(layer->hwcFrame.right - layer->hwcFrame.left,
180                           static_cast<int32_t>(layer->hwcCrop.right - layer->hwcCrop.left));
181         ret += ",";
182         ret += scaleRatio(layer->hwcFrame.bottom - layer->hwcFrame.top,
183                           static_cast<int32_t>(layer->hwcCrop.bottom - layer->hwcCrop.top));
184     }
185     return ret;
186 }
187 
scaleRatio(int32_t destinationScale,int32_t sourceScale)188 const char* LayerStats::scaleRatio(int32_t destinationScale, int32_t sourceScale) {
189     // Make scale buckets from <1/64 to >= 16, to avoid floating point
190     // calculation, x64 on destinationScale first
191     int32_t scale = destinationScale * 64 / sourceScale;
192     if (!scale) return "<1/64";
193     if (scale < 2) return "1/64";
194     if (scale < 4) return "1/32";
195     if (scale < 8) return "1/16";
196     if (scale < 16) return "1/8";
197     if (scale < 32) return "1/4";
198     if (scale < 64) return "1/2";
199     if (scale < 128) return "1";
200     if (scale < 256) return "2";
201     if (scale < 512) return "4";
202     if (scale < 1024) return "8";
203     return ">=16";
204 }
205 
alpha(float a)206 const char* LayerStats::alpha(float a) {
207     if (a == 1.0f) return "1.0";
208     if (a > 0.9f) return "0.99";
209     if (a > 0.8f) return "0.9";
210     if (a > 0.7f) return "0.8";
211     if (a > 0.6f) return "0.7";
212     if (a > 0.5f) return "0.6";
213     if (a > 0.4f) return "0.5";
214     if (a > 0.3f) return "0.4";
215     if (a > 0.2f) return "0.3";
216     if (a > 0.1f) return "0.2";
217     if (a > 0.0f) return "0.1";
218     return "0.0";
219 }
220 
isRotated(int32_t transform)221 bool LayerStats::isRotated(int32_t transform) {
222     return transform & HWC_TRANSFORM_ROT_90;
223 }
224 
isVFlipped(int32_t transform)225 bool LayerStats::isVFlipped(int32_t transform) {
226     return transform & HWC_TRANSFORM_FLIP_V;
227 }
228 
isHFlipped(int32_t transform)229 bool LayerStats::isHFlipped(int32_t transform) {
230     return transform & HWC_TRANSFORM_FLIP_H;
231 }
232 
233 }  // namespace android
234