HDMICEC: Set common callback logic for shell cmd

Create a common set of callback objects and fields for reuse in
different commands that may need callback.

Bug: 177973980
Test: adb shell cmd hdmi_control otp
Change-Id: I194b7886f0a15cd7fafa6f43dec9b5a02c55b06e

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

@@ -35,9 +35,23 @@ final class HdmiControlShellCommand extends ShellCommand {
 
     private final IHdmiControlService.Stub mBinderService;
 
+    final CountDownLatch mLatch;
+    AtomicInteger mCecResult;
+    IHdmiControlCallback.Stub mHdmiControlCallback;
 
     HdmiControlShellCommand(IHdmiControlService.Stub binderService) {
         mBinderService = binderService;
+        mLatch = new CountDownLatch(1);
+        mCecResult = new AtomicInteger();
+        mHdmiControlCallback =
+                new IHdmiControlCallback.Stub() {
+                    @Override
+                    public void onComplete(int result) {
+                        getOutPrintWriter().println(" done (" + getResultString(result) + ")");
+                        mCecResult.set(result);
+                        mLatch.countDown();
+                    }
+                };
     }
 
     @Override
@@ -94,28 +108,14 @@ final class HdmiControlShellCommand extends ShellCommand {
     }
 
     private int oneTouchPlay(PrintWriter pw) throws RemoteException {
-        final CountDownLatch latch = new CountDownLatch(1);
-        AtomicInteger cecResult = new AtomicInteger();
         pw.print("Sending One Touch Play...");
-        mBinderService.oneTouchPlay(new IHdmiControlCallback.Stub() {
+        mBinderService.oneTouchPlay(mHdmiControlCallback);
-            @Override
-            public void onComplete(int result) {
-                pw.println(" done (" + result + ")");
-                latch.countDown();
-                cecResult.set(result);
-            }
-        });
 
-        try {
+        if (!receiveCallback("One Touch Play")) {
-            if (!latch.await(HdmiConfig.TIMEOUT_MS, TimeUnit.MILLISECONDS)) {
-                getErrPrintWriter().println("One Touch Play timed out.");
             return 1;
         }
-        } catch (InterruptedException e) {
+
-            getErrPrintWriter().println("Caught InterruptedException");
+        return mCecResult.get() == HdmiControlManager.RESULT_SUCCESS ? 0 : 1;
-            Thread.currentThread().interrupt();
-        }
-        return cecResult.get() == HdmiControlManager.RESULT_SUCCESS ? 0 : 1;
     }
 
     private int vendorCommand(PrintWriter pw) throws RemoteException {
@@ -198,4 +198,37 @@ final class HdmiControlShellCommand extends ShellCommand {
                 throw new IllegalArgumentException("Unknown operation: " + operation);
         }
     }
+
+    private boolean receiveCallback(String command) {
+        try {
+            if (!mLatch.await(HdmiConfig.TIMEOUT_MS, TimeUnit.MILLISECONDS)) {
+                getErrPrintWriter().println(command + " timed out.");
+                return false;
+            }
+        } catch (InterruptedException e) {
+            getErrPrintWriter().println("Caught InterruptedException");
+            Thread.currentThread().interrupt();
+        }
+        return true;
+    }
+
+    private String getResultString(int result) {
+        switch (result) {
+            case HdmiControlManager.RESULT_SUCCESS:
+                return "Success";
+            case HdmiControlManager.RESULT_TIMEOUT:
+                return "Timeout";
+            case HdmiControlManager.RESULT_SOURCE_NOT_AVAILABLE:
+                return "Source not available";
+            case HdmiControlManager.RESULT_TARGET_NOT_AVAILABLE:
+                return "Target not available";
+            case HdmiControlManager.RESULT_EXCEPTION:
+                return "Exception";
+            case HdmiControlManager.RESULT_INCORRECT_MODE:
+                return "Incorrect mode";
+            case HdmiControlManager.RESULT_COMMUNICATION_FAILED:
+                return "Communication Failed";
+        }
+        return Integer.toString(result);
+    }
 }