CEC: Make TV try to allocate logical address 0 first

HDMI Spec says TV shall try to allocate TV() logical address, unlike
other kinds of devices that are recommended to use the previously
allocated one.

Also included are small changes:

- reply with 'can not provide source' if TV has no source to provide
- return the present device info if we have one at the given path

Bug: 19045081
Change-Id: Icf17cb581f0ef2274e252ec5665f80bb1c08b494

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

@@ -222,18 +222,13 @@ final class HdmiCecLocalDeviceTv extends HdmiCecLocalDevice {
     }
 
     @Override
-    @ServiceThreadOnly
     protected int getPreferredAddress() {
-        assertRunOnServiceThread();
-        return SystemProperties.getInt(Constants.PROPERTY_PREFERRED_ADDRESS_TV,
-                Constants.ADDR_UNREGISTERED);
+        return Constants.ADDR_TV;
     }
 
     @Override
-    @ServiceThreadOnly
     protected void setPreferredAddress(int addr) {
-        assertRunOnServiceThread();
-        SystemProperties.set(Constants.PROPERTY_PREFERRED_ADDRESS_TV, String.valueOf(addr));
+        Slog.w(TAG, "Preferred addres will not be stored for TV");
     }
 
     @Override
@@ -1631,7 +1626,7 @@ final class HdmiCecLocalDeviceTv extends HdmiCecLocalDevice {
             Slog.w(TAG, "Invalid record source." + Arrays.toString(recordSource));
             announceOneTouchRecordResult(recorderAddress,
                     ONE_TOUCH_RECORD_FAIL_TO_RECORD_DISPLAYED_SCREEN);
-            return Constants.ABORT_UNABLE_TO_DETERMINE;
+            return Constants.ABORT_CANNOT_PROVIDE_SOURCE;
         }
 
         addAndStartAction(new OneTouchRecordAction(this, recorderAddress, recordSource));

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

@@ -1192,7 +1192,8 @@ public final class HdmiControlService extends SystemService {
             }
             int activePath = tv.getActivePath();
             if (activePath != HdmiDeviceInfo.PATH_INVALID) {
-                return new HdmiDeviceInfo(activePath, tv.getActivePortId());
+                HdmiDeviceInfo info = tv.getDeviceInfoByPath(activePath);
+                return (info != null) ? info : new HdmiDeviceInfo(activePath, tv.getActivePortId());
             }
             return null;
         }