Hw亮度省电

1. 亮度控制策略

/decompile-hw/decompile/app/HwPowerGenieEngine3/src/main/res/xml/backlight_policy.xml

<?xml version="1.0" encoding="utf-8"?>
2 <backlight_policy xmlns:android="http://schemas.android.com/apk/res/android" version="1">
3     <mode id="0" />
4     <mode id="1">
5         <action name="browser front" id="203">
6             <item name="policy_auto"
7                 1 />
8             <item name="policy_ratio"
9                 70 />
10         </action>
11         <action name="special front" id="-1">
12             <item name="policy_auto"
13                 1 />
14             <item name="policy_ratio"
15                 95 />
16             <item name="package_name"
17                 com.huawei.appmarket />
18             <item name="package_name"
19                 com.android.email />
20             <item name="package_name"
21                 com.android.contacts />
22             <item name="package_name"
23                 com.huawei.hidisk />
24             <item name="package_name"
25                 com.qzone />
26             <item name="package_name"
27                 com.tencent.mm />
28         </action>
29         <action name="game2d front" id="233">
30             <item name="policy_auto"
31                 1 />
32         </action>
33         <action name="game3d front" id="204">
34             <item name="policy_auto"
35                 1 />
36         </action>
37         <action name="office front" id="225">
38             <item name="policy_auto"
39                 1 />
40             <item name="policy_ratio"
41                 65 />
42         </action>
43         <action name="video front" id="228">
44             <item name="policy_auto"
45                 1 />
46             <item name="policy_ratio"
47                 85 />
48         </action>
49         <action name="video start" id="246">
50             <item name="policy_auto"
51                 1 />
52             <item name="policy_ratio"
53                 85 />
54         </action>
55         <action name="video end" id="247" />
56         <action name="ebook front" id="205">
57             <item name="policy_auto"
58                 1 />
59             <item name="policy_ratio"
60                 65 />
61         </action>
62         <action name="mms front" id="235">
63             <item name="policy_auto"
64                 1 />
65             <item name="policy_ratio"
66                 80 />
67         </action>
68     </mode>
69     <mode id="2">
70         <action name="browser front" id="203">
71             <item name="policy_ratio"
72                 70 />
73             <item name="policy_auto"
74                 1 />
75         </action>
76         <action name="office front" id="225">
77             <item name="policy_ratio"
78                 70 />
79             <item name="policy_auto"
80                 1 />
81         </action>
82         <action name="mms front" id="235">
83             <item name="policy_ratio"
84                 85 />
85             <item name="policy_auto"
86                 1 />
87         </action>
88         <action name="ebook front" id="205">
89             <item name="policy_ratio"
90                 70 />
91             <item name="policy_auto"
92                 1 />
93         </action>
94         <action name="special front" id="-1">
95             <item name="policy_auto"
96                 1 />
97             <item name="policy_ratio"
98                 95 />
99             <item name="package_name"
100                 com.android.email />
101             <item name="package_name"
102                 com.google.android.gm />
103             <item name="package_name"
104                 com.huawei.hidisk />
105             <item name="package_name"
106                 com.qzone />
107             <item name="package_name"
108                 com.tencent.mm />
109             <item name="package_name"
110                 com.android.contacts />
111             <item name="package_name"
112                 com.taobao.taobao />
113             <item name="package_name"
114                 com.jingdong.app.mall />
115         </action>
116         <action name="special front" id="-1">
117             <item name="policy_auto"
118                 1 />
119             <item name="policy_ratio"
120                 70 />
121             <item name="package_name"
122                 com.huawei.android.webcustomize />
123         </action>
124         <action name="special front" id="-1">
125             <item name="policy_auto"
126                 1 />
127             <item name="policy_ratio"
128                 80 />
129             <item name="package_name"
130                 com.huawei.hwmwlauncher />
131         </action>
132         <action name="fuzzy front" id="-2">
133             <item name="policy_auto"
134                 1 />
135             <item name="policy_ratio"
136                 95 />
137             <item name="package_name"
138                 *blog />
139             <item name="package_name"
140                 *weibo />
141             <item name="package_name"
142                 *zaker />
143             <item name="package_name"
144                 *mobileqq />
145             <item name="package_name"
146                 *.news />
147         </action>
148     </mode>
149     <mode id="3" />
150     <mode id="4" />
151 </backlight_policy>

2. 策略加载，存放到数据库中

xref: /decompile-hw/decompile/app/HwPowerGenieEngine3/src/main/java/com/huawei/powergenie/core/policy/PolicyInitialization.java

public final class PolicyInitialization {
24      private static String CUSTDIR_BACKLIGHT_POLICY = "/product/etc/hwpg/backlight_policy.xml";07      public Uri addBacklightPolicy(int actionId, int powerMode, int policy, int value, String pkg) {
108          ContentValues values = new ContentValues(5);
109          values.put("action_id", Integer.valueOf(actionId));
110          values.put("power_mode", Integer.valueOf(powerMode));
111          values.put("policy_type", Integer.valueOf(policy));
112          values.put("policy_value", Integer.valueOf(value));
113          if (pkg != null) {
114              values.put("pkg_name", pkg);
115          }
116          return this.mResolver.insert(PolicyProvider.BACKLIGHT_URI, values);
117      }

3.从数据库中读取策略

/decompile-hw/decompile/app/HwPowerGenieEngine3/src/main/java/com/huawei/powergenie/modules/displaypower/BacklightControl.java (revision f5955e2b)

      private boolean loadPolicy(int mode) {
271          Policy item;
272          this.mActionMapPolicy.clear();
273          this.mPkgMapPolicy.clear();
274          this.mFuzzyMatchPkgList.clear();
275          Cursor cursor = this.mContext.getContentResolver().query(PolicyProvider.BACKLIGHT_URI, null, "power_mode=? OR power_mode=? ", new String[]{Integer.toString(mode), "0"}, null);
276          if (cursor == null) {
277              Log.w("BacklightControl", "backlight table is not exist. ");
278              return false;
279          }
280          int idCol = cursor.getColumnIndex("action_id");
281          int typeCol = cursor.getColumnIndex("policy_type");
282          int valueCol = cursor.getColumnIndex("policy_value");
283          int pkgCol = cursor.getColumnIndex("pkg_name");

4.控制亮度的接口

/decompile-hw/decompile/framework/services/com/android/server/pg/PGManagerService.java (revision f5955e2b)

207      public void setLcdRatio(int ratio, boolean autoAdjust) {
208          if (!this.mSystemReady) {
209              Log.w(TAG, "not ready for setLcdRatio");
210          } else if (1000 != Binder.getCallingUid()) {
211              Log.e(TAG, "setLcdRatio permission not allowed. uid = " + Binder.getCallingUid());
212          } else {
213              this.mPms.setLcdRatio(ratio, autoAdjust);
214          }
215      }/decompile-hw/decompile/framework/hwServices/com/android/server/power/HwPowerManagerService.java (revision f5955e2b)public void setLcdRatio(int ratio, boolean autoAdjust) {
644          this.mLightsManager.getLight(0).setLcdRatio(ratio, autoAdjust);
645      }xref: /decompile-hw/decompile/framework/services/com/android/server/lights/LightsService.java (revision f5955e2b)94          public void setLcdRatio(int ratio, boolean autoAdjust) {
95              LightsService.mIsAutoAdjust = autoAdjust;
96              if (ratio > 100 || ratio < 1) {
97                  LightsService.mRatio = 1.0d;
98              } else {
99                  LightsService.mRatio = ((double) ratio) / 100.0d;
100              }
101              Slog.i(LightsService.TAG, "setLcdRatio ratio:" + ratio + " autoAdjust:" + autoAdjust);
102              setLightGradualChange(LightsService.mLcdBrightness, 0, true);
103          }