Send <Inactive Source> if put to standby by connected device

<Inactive Source> should only be suppressed if followed by a <Standby>
message.

Since no <Standby> is sent by the device if it was put to sleep by a
connected device via CEC, <Inactive Source> should be sent.

Test: atest
Bug: 183603416
Change-Id: Ibb4393c82b5ba7da13983877e1f91172a19f9add

services/core/java/com/android/server/hdmi/HdmiCecLocalDevicePlayback.java

@@ -143,7 +143,12 @@ public class HdmiCecLocalDevicePlayback extends HdmiCecLocalDeviceSource {
         boolean mTvSendStandbyOnSleep = mService.getHdmiCecConfig().getIntValue(
                 HdmiControlManager.CEC_SETTING_NAME_TV_SEND_STANDBY_ON_SLEEP)
                     == HdmiControlManager.TV_SEND_STANDBY_ON_SLEEP_ENABLED;
-        if (initiatedByCec || !mTvSendStandbyOnSleep || !wasActiveSource) {
+        if (!wasActiveSource) {
+            return;
+        }
+        if (initiatedByCec || !mTvSendStandbyOnSleep) {
+            mService.sendCecCommand(HdmiCecMessageBuilder.buildInactiveSource(mAddress,
+                            mService.getPhysicalAddress()));
             return;
         }
         switch (standbyAction) {

services/tests/servicestests/src/com/android/server/hdmi/HdmiCecLocalDevicePlaybackTest.java

@@ -830,6 +830,31 @@ public class HdmiCecLocalDevicePlaybackTest {
         assertThat(mNativeWrapper.getResultMessages()).contains(inactiveSource);
     }
 
+    @Test
+    public void handleOnStandby_CecMessageReceived() {
+        mHdmiCecLocalDevicePlayback.mService.getHdmiCecConfig().setStringValue(
+                HdmiControlManager.CEC_SETTING_NAME_POWER_CONTROL_MODE,
+                HdmiControlManager.POWER_CONTROL_MODE_TV);
+        mHdmiCecLocalDevicePlayback.setActiveSource(mPlaybackLogicalAddress,
+                mPlaybackPhysicalAddress, "HdmiCecLocalDevicePlaybackTest");
+        mHdmiCecLocalDevicePlayback.mService.getHdmiCecConfig().setIntValue(
+                HdmiControlManager.CEC_SETTING_NAME_TV_SEND_STANDBY_ON_SLEEP,
+                HdmiControlManager.TV_SEND_STANDBY_ON_SLEEP_ENABLED);
+        mHdmiCecLocalDevicePlayback.onStandby(true, HdmiControlService.STANDBY_SCREEN_OFF);
+        mTestLooper.dispatchAll();
+
+        HdmiCecMessage standbyMessageToTv = HdmiCecMessageBuilder.buildStandby(
+                mHdmiCecLocalDevicePlayback.mAddress, ADDR_TV);
+        HdmiCecMessage standbyMessageBroadcast = HdmiCecMessageBuilder.buildStandby(
+                mHdmiCecLocalDevicePlayback.mAddress, ADDR_BROADCAST);
+        HdmiCecMessage inactiveSource = HdmiCecMessageBuilder.buildInactiveSource(
+                mPlaybackLogicalAddress, mPlaybackPhysicalAddress);
+
+        assertThat(mNativeWrapper.getResultMessages()).doesNotContain(standbyMessageToTv);
+        assertThat(mNativeWrapper.getResultMessages()).doesNotContain(standbyMessageBroadcast);
+        assertThat(mNativeWrapper.getResultMessages()).contains(inactiveSource);
+    }
+
     @Test
     public void handleOnInitializeCecComplete_ByEnableCec() {
         mHdmiCecLocalDevicePlayback.onInitializeCecComplete(