From 5b56c57795429f5563235ad1f1ad2c29c98876ec Mon Sep 17 00:00:00 2001
From: Romain Vimont <rom@rom1v.com>
Date: Fri, 15 Mar 2019 20:23:30 +0100
Subject: [PATCH] Screen off PoC

---
 .../com/genymobile/scrcpy/ScreenEncoder.java  |  2 ++
 .../scrcpy/wrappers/SurfaceControl.java       | 21 +++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java b/server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java
index 22eb6a54..97250d50 100644
--- a/server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java
@@ -57,6 +57,8 @@ public class ScreenEncoder implements Device.RotationListener {
     public void streamScreen(Device device, FileDescriptor fd) throws IOException {
         MediaFormat format = createFormat(bitRate, frameRate, iFrameInterval);
         device.setRotationListener(this);
+        IBinder d = SurfaceControl.getBuiltInDisplay(0);
+        SurfaceControl.setDisplayPowerMode(d, SurfaceControl.POWER_MODE_OFF);
         boolean alive;
         try {
             do {
diff --git a/server/src/main/java/com/genymobile/scrcpy/wrappers/SurfaceControl.java b/server/src/main/java/com/genymobile/scrcpy/wrappers/SurfaceControl.java
index 85733867..7501c3a7 100644
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/SurfaceControl.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/SurfaceControl.java
@@ -10,6 +10,11 @@ public final class SurfaceControl {
 
     private static final Class<?> CLASS;
 
+    public static final int POWER_MODE_OFF = 0;
+    public static final int POWER_MODE_DOZE = 1;
+    public static final int POWER_MODE_NORMAL = 2;
+    public static final int POWER_MODE_DOZE_SUSPEND = 3;
+
     static {
         try {
             CLASS = Class.forName("android.view.SurfaceControl");
@@ -71,6 +76,22 @@ public final class SurfaceControl {
         }
     }
 
+    public static IBinder getBuiltInDisplay(int builtInDisplayId) {
+        try {
+            return (IBinder) CLASS.getMethod("getBuiltInDisplay", int.class).invoke(null, builtInDisplayId);
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    public static void setDisplayPowerMode(IBinder displayToken, int mode) {
+        try {
+            CLASS.getMethod("setDisplayPowerMode", IBinder.class, int.class).invoke(null, displayToken, mode);
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
     public static void destroyDisplay(IBinder displayToken) {
         try {
             CLASS.getMethod("destroyDisplay", IBinder.class).invoke(null, displayToken);