Call Diagnostic Service implementation

Implement binding to Call Diagnostic Service from Telecom and passing
of relevant signals to the bound CDS.

Test: Added CTS test suite.
Test: Manual testing using test implementation in the Telecom test app.
Bug: 163085177
Change-Id: I65f6d749bdeeefae78946a567a09f5264fd1fe95
diff --git a/testapps/AndroidManifest.xml b/testapps/AndroidManifest.xml
index 891a7a7..dd8258a 100644
--- a/testapps/AndroidManifest.xml
+++ b/testapps/AndroidManifest.xml
@@ -39,6 +39,13 @@
         <uses-library android:name="android.test.runner"/>
 
         <!-- Miscellaneous telecom app-related test activities. -->
+        <service android:name="com.android.server.telecom.testapps.TestCallDiagnosticService"
+            android:permission="android.permission.BIND_CALL_DIAGNOSTIC_SERVICE"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.telecom.CallDiagnosticService"/>
+            </intent-filter>
+        </service>
 
         <service android:name="com.android.server.telecom.testapps.TestConnectionService"
              android:permission="android.permission.BIND_TELECOM_CONNECTION_SERVICE"
diff --git a/testapps/src/com/android/server/telecom/testapps/TestCallDiagnosticService.java b/testapps/src/com/android/server/telecom/testapps/TestCallDiagnosticService.java
new file mode 100644
index 0000000..73bf438
--- /dev/null
+++ b/testapps/src/com/android/server/telecom/testapps/TestCallDiagnosticService.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.telecom.testapps;
+
+import android.telecom.BluetoothCallQualityReport;
+import android.telecom.Call;
+import android.telecom.CallAudioState;
+import android.telecom.CallDiagnosticService;
+import android.telecom.DiagnosticCall;
+import android.telecom.Log;
+import android.telephony.CallQuality;
+import android.telephony.ims.ImsReasonInfo;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+public class TestCallDiagnosticService extends CallDiagnosticService {
+
+    public static final class TestDiagnosticCall extends DiagnosticCall {
+        public Call.Details details;
+
+        TestDiagnosticCall(Call.Details details) {
+            this.details = details;
+        }
+
+        @Override
+        public void onCallDetailsChanged(@NonNull Call.Details details) {
+            Log.i(this, "onCallDetailsChanged; %s", details);
+        }
+
+        @Override
+        public void onReceiveDeviceToDeviceMessage(int message, int value) {
+            Log.i(this, "onReceiveDeviceToDeviceMessage; %d/%d", message, value);
+        }
+
+        @Nullable
+        @Override
+        public CharSequence onCallDisconnected(int disconnectCause, int preciseDisconnectCause) {
+            Log.i(this, "onCallDisconnected");
+            return null;
+        }
+
+        @Nullable
+        @Override
+        public CharSequence onCallDisconnected(@NonNull ImsReasonInfo disconnectReason) {
+            Log.i(this, "onCallDisconnected");
+            return null;
+        }
+
+        @Override
+        public void onCallQualityReceived(@NonNull CallQuality callQuality) {
+            Log.i(this, "onCallQualityReceived %s", callQuality);
+        }
+    }
+
+    @NonNull
+    @Override
+    public DiagnosticCall onInitializeDiagnosticCall(@NonNull Call.Details call) {
+        Log.i(this, "onInitiatlizeDiagnosticCall %s", call);
+        return new TestDiagnosticCall(call);
+    }
+
+    @Override
+    public void onRemoveDiagnosticCall(@NonNull DiagnosticCall call) {
+        Log.i(this, "onRemoveDiagnosticCall %s", call);
+    }
+
+    @Override
+    public void onCallAudioStateChanged(@NonNull CallAudioState audioState) {
+        Log.i(this, "onCallAudioStateChanged %s", audioState);
+    }
+
+    @Override
+    public void onBluetoothCallQualityReportReceived(
+            @NonNull BluetoothCallQualityReport qualityReport) {
+        Log.i(this, "onBluetoothCallQualityReportReceived %s", qualityReport);
+    }
+}