Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5ae7df18 authored by Simon MacMullen's avatar Simon MacMullen
Browse files

Add system properties for screen state and brightness. 

This will allow Perfetto to record the screen state and brightness
at the start of a trace.

Named the properties "debug.tracing.screen_*" to fit with existing
SELinux config and discourage treating this as a general API (there's
Display.getState() etc for that).

Bug: 152194759
Test: Manual test with "adb shell getprop"
Change-Id: I635380f75886e8e1441b77994cb3d2d9d4630e9e
parent bce4b444

services/core/java/com/android/server/display/DisplayPowerController.java

+5 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ import android.os.Message; 
import android.os.PowerManager;

import android.os.RemoteException;

import android.os.SystemClock;

import android.os.SystemProperties;

import android.os.Trace;

import android.os.UserHandle;

import android.provider.Settings;
@@ -1238,6 +1239,8 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 


            if (!reportOnly) {

                Trace.traceCounter(Trace.TRACE_TAG_POWER, "ScreenState", state);

                // TODO(b/153319140) remove when we can get this from the above trace invocation

                SystemProperties.set("debug.tracing.screen_state", String.valueOf(state));

                mPowerState.setScreenState(state);

                // Tell battery stats about the transition.

                try {
@@ -1314,6 +1317,8 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call 
        }

        if (mScreenBrightnessRampAnimator.animateTo(target, rate)) {

            Trace.traceCounter(Trace.TRACE_TAG_POWER, "TargetScreenBrightness", (int) target);

            // TODO(b/153319140) remove when we can get this from the above trace invocation

            SystemProperties.set("debug.tracing.screen_brightness", String.valueOf(target));

            try {

                // TODO(brightnessfloat): change BatteryStats to use float

                mBatteryStats.noteScreenBrightness(