Implement MHL send key action.

This class introduces two classes, MhlSendKeyAction and
HdmiMhlKeycode.
 - MhlSendKeyAction is a feature action that manages MHL message
for RCP, Remote Control Pass Through.
 - HdmiMhlKeycode is a collection of MHL keycode including keycode
mapping between MHL and Android keycode.

Bug: 16966459
Change-Id: Ib3f7229c71b66837cd0d239e5af1940dfccee7df

3 files changed, 20 insertions, 6 deletions

diff --git a/services/core/java/com/android/server/hdmi/Constants.java b/services/core/java/com/android/server/hdmi/Constants.java
index 2407253..ae7472d 100644
--- a/services/core/java/com/android/server/hdmi/Constants.java
+++ b/services/core/java/com/android/server/hdmi/Constants.java
@@ -276,5 +276,10 @@ final class Constants {
     //     values which denotes the device type in HDMI Spec 1.4.
     static final String PROPERTY_DEVICE_TYPE = "ro.hdmi.device_type";
 
+    // MHL RCPE messages
+    static final int MHL_RCPE_NO_ERROR = 0x00;
+    static final int MHL_RCPE_INEFFECTIVE_KEYCODE = 0x01;
+    static final int MHL_RCPE_RESPONDER_BUSY = 0x02;
+
     private Constants() { /* cannot be instantiated */ }
 }
diff --git a/services/core/java/com/android/server/hdmi/HdmiCecKeycode.java b/services/core/java/com/android/server/hdmi/HdmiCecKeycode.java
index c0c8424..46b2b3e 100644
--- a/services/core/java/com/android/server/hdmi/HdmiCecKeycode.java
+++ b/services/core/java/com/android/server/hdmi/HdmiCecKeycode.java
@@ -21,7 +21,7 @@ import android.view.KeyEvent;
 /**
  * Helper class to translate android keycode to hdmi cec keycode and vice versa.
  */
-public class HdmiCecKeycode {
+final class HdmiCecKeycode {
     public static final int UNSUPPORTED_KEYCODE = -1;
     public static final int NO_PARAM = -1;
 
diff --git a/services/core/java/com/android/server/hdmi/HdmiControlService.java b/services/core/java/com/android/server/hdmi/HdmiControlService.java
index 3ccdf07..14c066e 100644
--- a/services/core/java/com/android/server/hdmi/HdmiControlService.java
+++ b/services/core/java/com/android/server/hdmi/HdmiControlService.java
@@ -996,12 +996,21 @@ public final class HdmiControlService extends SystemService {
             runOnServiceThread(new Runnable() {
                 @Override
                 public void run() {
-                    HdmiCecLocalDevice localDevice = mCecController.getLocalDevice(deviceType);
-                    if (localDevice == null) {
-                        Slog.w(TAG, "Local device not available");
-                        return;
+                    if (mMhlController != null) {
+                        HdmiMhlLocalDevice device = mMhlController.getLocalDevice(mActivePortId);
+                        if (device != null) {
+                            device.sendKeyEvent(keyCode, isPressed);
+                            return;
+                        }
+                    }
+                    if (mCecController != null) {
+                        HdmiCecLocalDevice localDevice = mCecController.getLocalDevice(deviceType);
+                        if (localDevice == null) {
+                            Slog.w(TAG, "Local device not available");
+                            return;
+                        }
+                        localDevice.sendKeyEvent(keyCode, isPressed);
                     }
-                    localDevice.sendKeyEvent(keyCode, isPressed);
                 }
             });
         }