SPEC-1924: AGL Speech Framework's Voice Service High Level 1.0 Release.

Details:
1) Control plugin implementation for VSHL 1.0
2) Exposed APIs that are documented in the confluence page
   https://confluence.automotivelinux.org/display/SPE/Speech+EG+Architecture
3) Implemented 39 unit tests based on GTest framework to test all the low
level components of VSHL binding.
4) Implemented a HTML5 based VSHL API tester application to test VSHL APIs.

API specification:
https://confluence.automotivelinux.org/display/SPE/Speech+EG+Architecture#SpeechEGArchitecture-HighLevelVoiceService

Test performed:
1) Tested AGL service running Alexa Auto SDK https://github.com/alexa/aac-sdk on Ubuntu 16.04 and Renesas R-Car M3 board.

License:
Apache 2.0

Developers/Owners:
Naveen Bobbili (nbobbili@amazon.com)
Prakash Buddhiraja (buddhip@amazon.com)
Shotaro Uchida (shotaru@amazon.co.jp)

Change-Id: I3370f4ad65aff030f24f4ad571fb02d525bbfbca
Signed-off-by: Naveen Bobbili  <nbobbili@amazon.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/src/plugins/interfaces/utilities/events/IEventFilter.h b/src/plugins/interfaces/utilities/events/IEventFilter.h
new file mode 100644
index 0000000..33d8202
--- /dev/null
+++ b/src/plugins/interfaces/utilities/events/IEventFilter.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *     http://aws.amazon.com/apache2.0/
+ *
+ * or in the "license" file accompanying this file. This file 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.
+ */
+#ifndef VSHL_COMMON_INTERFACES_IEVENTFILTER_H_
+#define VSHL_COMMON_INTERFACES_IEVENTFILTER_H_
+
+#include <string>
+
+using namespace std;
+
+namespace vshl {
+namespace common {
+namespace interfaces {
+/*
+ * This is an abstract class that is responsible for filtering the events
+ * that are delivered to the high level voice service from apps or voiceagents.
+ */
+class IEventFilter {
+public:
+    // Name of the event filter.
+    virtual string getName() = 0;
+
+    // Every event filter needs to implement this method and
+    // return true if consuming the event or false otherwise.
+    virtual bool onIncomingEvent(const string eventName, const string voiceAgentId, const string payload) = 0;
+
+    // Destructor
+    virtual ~IEventFilter() = default;
+};
+
+}  // namespace interfaces
+}  // namespace common
+}  // namespace vshl
+
+#endif  // VSHL_COMMON_INTERFACES_IEVENTFILTER_H_