Add gRPC-based voice agent service for AGL

Introducing a gRPC-based voice agent service for Automotive Grade Linux
(AGL) that leverages GStreamer, Vosk, Snips, and RASA. It seamlessly
processes user voice commands, converting spoken words to text,
extracting intents, and performing actions via the Kuksa interface (WIP).

Bug-AGL: SPEC-4906
Signed-off-by: Malik Talha <talhamalik727x@gmail.com>
Change-Id: I47e61c66149c67bb97fecc745e4c3afd79f447a5

1 files changed, 82 insertions, 0 deletions

diff --git a/agl_service_voiceagent/protos/voice_agent.proto b/agl_service_voiceagent/protos/voice_agent.proto
new file mode 100644
index 0000000..8ee8324
--- /dev/null
+++ b/agl_service_voiceagent/protos/voice_agent.proto
@@ -0,0 +1,82 @@
+syntax = "proto3";
+
+
+service VoiceAgentService {
+  rpc CheckServiceStatus(Empty) returns (ServiceStatus);
+  rpc DetectWakeWord(Empty) returns (stream WakeWordStatus);
+  rpc RecognizeVoiceCommand(stream RecognizeControl) returns (RecognizeResult);
+  rpc ExecuteVoiceCommand(ExecuteInput) returns (ExecuteResult);
+}
+
+
+enum RecordAction {
+  START = 0;
+  STOP = 1;
+}
+
+enum NLUModel {
+  SNIPS = 0;
+  RASA = 1;
+}
+
+enum RecordMode {
+  MANUAL = 0;
+  AUTO = 1;
+}
+
+enum RecognizeStatusType {
+  REC_ERROR = 0;
+  REC_SUCCESS = 1;
+  REC_PROCESSING = 2;
+  VOICE_NOT_RECOGNIZED = 3;
+  INTENT_NOT_RECOGNIZED = 4;
+}
+
+enum ExecuteStatusType {
+  EXEC_ERROR = 0;
+  EXEC_SUCCESS = 1;
+  KUKSA_CONN_ERROR = 2;
+  INTENT_NOT_SUPPORTED = 3;
+  INTENT_SLOTS_INCOMPLETE = 4;
+}
+
+
+message Empty {}
+
+message ServiceStatus {
+  string version = 1;
+  bool status = 2;  
+}
+
+message WakeWordStatus {
+  bool status = 1;
+}
+
+message RecognizeControl {
+  RecordAction action = 1;
+  NLUModel nlu_model = 2;
+  RecordMode record_mode = 3;
+  string stream_id = 4;
+}
+
+message IntentSlot {
+  string name = 1;
+  string value = 2;
+}
+
+message RecognizeResult {
+  string command = 1;
+  string intent = 2;
+  repeated IntentSlot intent_slots = 3;
+  string stream_id = 4;
+  RecognizeStatusType status = 5;
+}
+
+message ExecuteInput {
+  string intent = 1;
+  repeated IntentSlot intent_slots = 2;
+}
+
+message ExecuteResult {
+  ExecuteStatusType status = 1;
+}