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# SPDX-License-Identifier: Apache-2.0
#
# Copyright (c) 2023 Malik Talha
#
# 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.
import grpc
import sys
sys.path.append("../")
from agl_service_voiceagent.generated import audio_processing_pb2
from agl_service_voiceagent.generated import audio_processing_pb2_grpc
class STTOnlineService:
"""
STTOnlineService class is used to connect to an online gPRC based Whisper ASR service.
"""
def __init__(self, server_address, server_port,server_timeout=5):
"""
Initialize the online speech-to-text service.
Args:
server_ip (str): The IP address of the online speech-to-text service.
server_port (int): The port number of the online speech-to-text service.
server_timeout (int, optional): The timeout value in seconds (default is 5).
"""
self.server_address = server_address
self.server_port = server_port
self.server_timeout = server_timeout
self.client = None
self.initialized = False
def initialize_connection(self):
"""
Initialize the connection to the online speech-to-text service.
"""
try:
channel = grpc.insecure_channel(f"{self.server_address}:{self.server_port}")
self.client = audio_processing_pb2_grpc.AudioProcessingStub(channel)
self.initialized = True
print("STTOnlineService initialized with server address:",self.server_address,"and port:",self.server_port,"and timeout:",self.server_timeout,"seconds.")
except Exception as e:
print("Error initializing online speech-to-text service:",e)
self.initialized = False
return self.initialized
def close_connection(self):
"""
Close the connection to the online speech-to-text service.
"""
self.client = None
self.initialized = False
return not self.initialized
def recognize_audio(self, audio_file):
"""
Recognize speech from audio data.
Args:
audio_data (bytes): Audio data to process.
Returns:
str: The recognized text.
"""
if not self.initialized:
print("STTOnlineService not initialized.")
return None
try:
with open(audio_file, 'rb') as audio_file:
audio_data = audio_file.read()
request = audio_processing_pb2.AudioRequest(audio_data=audio_data)
response = self.client.ProcessAudio(request,timeout=self.server_timeout)
return response.text
except Exception as e:
print("Error recognizing audio:",e)
return None
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