Add support for Global Mic Disable user setting

This CL adds support for responding to changes in the
Global Microphone access disable user setting in the
ContextHub service.

Bug: 174691697
Test: run the ContexthubHidlTest VTS test, verify that the setting
change is propagated all the way to the stub in the CHRE framework.

Change-Id: Idd420bd110dd9d17ac9afcb5fc8be9113aa0a055

2 files changed, 69 insertions, 0 deletions

diff --git a/services/core/java/com/android/server/location/contexthub/ContextHubService.java b/services/core/java/com/android/server/location/contexthub/ContextHubService.java
index 63a42f845cee..dc1a26ae6fea 100644
--- a/services/core/java/com/android/server/location/contexthub/ContextHubService.java
+++ b/services/core/java/com/android/server/location/contexthub/ContextHubService.java
@@ -22,6 +22,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.database.ContentObserver;
+import android.hardware.SensorPrivacyManager;
 import android.hardware.contexthub.V1_0.AsyncEventType;
 import android.hardware.contexthub.V1_0.ContextHub;
 import android.hardware.contexthub.V1_0.ContextHubMsg;
@@ -117,6 +118,9 @@ public class ContextHubService extends IContextHubService.Stub {
     // True if WiFi is available for the Context Hub
     private boolean mIsWifiAvailable = false;
 
+    // True if audio is disabled for the ContextHub
+    private boolean mIsAudioDisabled = false;
+
     // Lock object for sendWifiSettingUpdate()
     private final Object mSendWifiSettingUpdateLock = new Object();
 
@@ -256,6 +260,21 @@ public class ContextHubService extends IContextHubService.Stub {
                         }
                     }, UserHandle.USER_ALL);
         }
+
+        if (mContextHubWrapper.supportsMicrophoneDisableSettingNotifications()) {
+            sendMicrophoneDisableSettingUpdate();
+
+            SensorPrivacyManager.OnSensorPrivacyChangedListener listener =
+                    new SensorPrivacyManager.OnSensorPrivacyChangedListener() {
+                    @Override
+                    public void onSensorPrivacyChanged(boolean enabled) {
+                        sendMicrophoneDisableSettingUpdate();
+                    }
+                };
+            SensorPrivacyManager manager = SensorPrivacyManager.getInstance(mContext);
+            manager.addSensorPrivacyListener(
+                    SensorPrivacyManager.INDIVIDUAL_SENSOR_MICROPHONE, listener);
+        }
     }
 
     /**
@@ -999,6 +1018,21 @@ public class ContextHubService extends IContextHubService.Stub {
         mContextHubWrapper.onAirplaneModeSettingChanged(enabled);
     }
 
+    /**
+     * Obtains the latest microphone disable setting value and notifies the
+     * Context Hub.
+     */
+    private void sendMicrophoneDisableSettingUpdate() {
+        SensorPrivacyManager manager = SensorPrivacyManager.getInstance(mContext);
+        boolean disabled = manager.isIndividualSensorPrivacyEnabled(
+                SensorPrivacyManager.INDIVIDUAL_SENSOR_MICROPHONE);
+        if (mIsAudioDisabled != disabled) {
+            mIsAudioDisabled = disabled;
+            mContextHubWrapper.onMicrophoneDisableSettingChanged(disabled);
+        }
+    }
+
+
     private String getCallingPackageName() {
         return mContext.getPackageManager().getNameForUid(Binder.getCallingUid());
     }
diff --git a/services/core/java/com/android/server/location/contexthub/IContextHubWrapper.java b/services/core/java/com/android/server/location/contexthub/IContextHubWrapper.java
index 4242d72239e2..c11e289c116b 100644
--- a/services/core/java/com/android/server/location/contexthub/IContextHubWrapper.java
+++ b/services/core/java/com/android/server/location/contexthub/IContextHubWrapper.java
@@ -129,6 +129,18 @@ public abstract class IContextHubWrapper {
      */
     public abstract void onAirplaneModeSettingChanged(boolean enabled);
 
+    /**
+     * @return True if this version of the Contexthub HAL supports microphone
+     * disable setting notifications.
+     */
+    public abstract boolean supportsMicrophoneDisableSettingNotifications();
+
+    /**
+     * Notifies the Contexthub implementation of a microphone disable setting
+     * change.
+     */
+    public abstract void onMicrophoneDisableSettingChanged(boolean enabled);
+
     private static class ContextHubWrapperV1_0 extends IContextHubWrapper {
         private android.hardware.contexthub.V1_0.IContexthub mHub;
 
@@ -152,6 +164,10 @@ public abstract class IContextHubWrapper {
             return false;
         }
 
+        public boolean supportsMicrophoneDisableSettingNotifications() {
+            return false;
+        }
+
         public void onLocationSettingChanged(boolean enabled) {
         }
 
@@ -160,6 +176,9 @@ public abstract class IContextHubWrapper {
 
         public void onAirplaneModeSettingChanged(boolean enabled) {
         }
+
+        public void onMicrophoneDisableSettingChanged(boolean enabled) {
+        }
     }
 
     private static class ContextHubWrapperV1_1 extends IContextHubWrapper {
@@ -185,6 +204,10 @@ public abstract class IContextHubWrapper {
             return false;
         }
 
+        public boolean supportsMicrophoneDisableSettingNotifications() {
+            return false;
+        }
+
         public void onLocationSettingChanged(boolean enabled) {
             try {
                 mHub.onSettingChanged(Setting.LOCATION,
@@ -199,6 +222,9 @@ public abstract class IContextHubWrapper {
 
         public void onAirplaneModeSettingChanged(boolean enabled) {
         }
+
+        public void onMicrophoneDisableSettingChanged(boolean enabled) {
+        }
     }
 
     private static class ContextHubWrapperV1_2 extends IContextHubWrapper {
@@ -224,6 +250,10 @@ public abstract class IContextHubWrapper {
             return true;
         }
 
+        public boolean supportsMicrophoneDisableSettingNotifications() {
+            return true;
+        }
+
         public void onLocationSettingChanged(boolean enabled) {
             sendSettingChanged(Setting.LOCATION,
                     enabled ? SettingValue.ENABLED : SettingValue.DISABLED);
@@ -239,6 +269,11 @@ public abstract class IContextHubWrapper {
                     enabled ? SettingValue.ENABLED : SettingValue.DISABLED);
         }
 
+        public void onMicrophoneDisableSettingChanged(boolean enabled) {
+            sendSettingChanged(android.hardware.contexthub.V1_2.Setting.GLOBAL_MIC_DISABLE,
+                    enabled ? SettingValue.ENABLED : SettingValue.DISABLED);
+        }
+
         private void sendSettingChanged(byte setting, byte newValue) {
             try {
                 mHub.onSettingChanged_1_2(setting, newValue);