#!/usr/bin/env python

# Copyright 2017 Google Inc. 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.

# 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.

"""Google Cloud Speech API sample application using the streaming API.

Example usage:

python transcribe_streaming.py resources/audio.raw

"""

# [START import_libraries]

import argparse

import io

# [END import_libraries]

def transcribe_streaming(stream_file):

"""Streams transcription of the given audio file."""

from google.cloud import speech

speech_client = speech.Client()

with io.open(stream_file, 'rb') as audio_file:

audio_sample = speech_client.sample(

stream=audio_file,

encoding=speech.encoding.Encoding.LINEAR16,

sample_rate_hertz=16000)

alternatives = audio_sample.streaming_recognize('en-US')

for alternative in alternatives:

print('Finished: {}'.format(alternative.is_final))

print('Stability: {}'.format(alternative.stability))

print('Transcript: {}'.format(alternative.confidence))

print('Transcript: {}'.format(alternative.transcript))

if __name__ == '__main__':

parser = argparse.ArgumentParser(

description=__doc__,

formatter_class=argparse.RawDescriptionHelpFormatter)

parser.add_argument('stream', help='File to stream to the API')

args = parser.parse_args()

transcribe_streaming(args.stream)