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#!/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 REST API for batch
processing.
Example usage:
python transcribe.py resources/audio.raw
python transcribe.py gs://cloud-samples-tests/speech/brooklyn.flac
"""
# [START import_libraries]
import argparse
import time
import io
# [END import_libraries]
def transcribe_file(speech_file, encoding, sample_rate_hertz, language):
"""Transcribe the given audio file."""
from google.cloud import speech
speech_client = speech.Client()
with io.open(speech_file, 'rb') as audio_file:
content = audio_file.read()
audio_sample = speech_client.sample(
content=content,
encoding=encoding,
sample_rate_hertz=sample_rate_hertz)
start = time.time()
alternatives = audio_sample.recognize(language)
print('Runtime: %s' % (time.time() - start))
for alternative in alternatives:
print(u'Transcript: {}'.format(alternative.transcript))
def transcribe_gcs(gcs_uri, encoding, sample_rate_hertz, language):
"""Transcribes the audio file specified by the gcs_uri."""
from google.cloud import speech
speech_client = speech.Client()
audio_sample = speech_client.sample(
content=None,
source_uri=gcs_uri,
encoding=encoding,
sample_rate_hertz=sample_rate_hertz)
alternatives = audio_sample.recognize(language)
for alternative in alternatives:
print('Transcript: {}'.format(alternative.transcript))
if __name__ == '__main__':
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument(
'path', help='File or GCS path for audio file to be recognized')
parser.add_argument('--encoding', default='LINEAR16')
parser.add_argument('--sample_rate', default=16000, type=int)
parser.add_argument('--language', default='en-US')
args = parser.parse_args()
if args.path.startswith('gs://'):
transcribe_gcs(args.path, args.encoding, args.sample_rate, args.language)
else:
transcribe_file(args.path, args.encoding, args.sample_rate, args.language)