detect_intent_audio.py

#!/usr/bin/env python

# Copyright 2017 Google LLC
#
# 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.

"""DialogFlow API Detect Intent Python sample with audio file.

Examples:
  python detect_intent_audio.py -h
  python detect_intent_audio.py --project-id PROJECT_ID \
  --session-id SESSION_ID --audio-file-path resources/book_a_room.wav
  python detect_intent_audio.py --project-id PROJECT_ID \
  --session-id SESSION_ID --audio-file-path resources/mountain_view.wav
  python detect_intent_audio.py --project-id PROJECT_ID \
  --session-id SESSION_ID --audio-file-path resources/today.wav
"""

import argparse
import uuid


# [START dialogflow_detect_intent_audio]
def detect_intent_audio(project_id, session_id, audio_file_path, language_code):
    """Returns the result of detect intent with an audio file as input.

    Using the same `session_id` between requests allows continuation
    of the conversation."""
    from google.cloud import dialogflow

    session_client = dialogflow.SessionsClient()

    # Note: hard coding audio_encoding and sample_rate_hertz for simplicity.
    audio_encoding = dialogflow.AudioEncoding.AUDIO_ENCODING_LINEAR_16
    sample_rate_hertz = 16000

    session = session_client.session_path(project_id, session_id)
    print("Session path: {}\n".format(session))

    with open(audio_file_path, "rb") as audio_file:
        input_audio = audio_file.read()

    audio_config = dialogflow.InputAudioConfig(
        audio_encoding=audio_encoding,
        language_code=language_code,
        sample_rate_hertz=sample_rate_hertz,
    )
    query_input = dialogflow.QueryInput(audio_config=audio_config)

    request = dialogflow.DetectIntentRequest(
        session=session,
        query_input=query_input,
        input_audio=input_audio,
    )
    response = session_client.detect_intent(request=request)

    print("=" * 20)
    print("Query text: {}".format(response.query_result.query_text))
    print(
        "Detected intent: {} (confidence: {})\n".format(
            response.query_result.intent.display_name,
            response.query_result.intent_detection_confidence,
        )
    )
    print("Fulfillment text: {}\n".format(response.query_result.fulfillment_text))


# [END dialogflow_detect_intent_audio]


if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter
    )
    parser.add_argument(
        "--project-id", help="Project/agent id.  Required.", required=True
    )
    parser.add_argument(
        "--session-id",
        help="Identifier of the DetectIntent session. " "Defaults to a random UUID.",
        default=str(uuid.uuid4()),
    )
    parser.add_argument(
        "--language-code",
        help='Language code of the query. Defaults to "en-US".',
        default="en-US",
    )
    parser.add_argument(
        "--audio-file-path", help="Path to the audio file.", required=True
    )

    args = parser.parse_args()

    detect_intent_audio(
        args.project_id, args.session_id, args.audio_file_path, args.language_code
    )