def request_stream(data_stream, rate, interim_results=True):
"""Yields `StreamingRecognizeRequest`s constructed from a recording audio
stream.
Args:
data_stream: A generator that yields raw audio data to send.
rate: The sampling rate in hertz.
interim_results: Whether to return intermediate results, before the
transcription is finalized.
"""
# The initial request must contain metadata about the stream, so the
# server knows how to interpret it.
recognition_config = cloud_speech_pb2.RecognitionConfig(
# There are a bunch of config options you can specify. See
# https://goo.gl/KPZn97 for the full list.
encoding='LINEAR16', # raw 16-bit signed LE samples
sample_rate=rate, # the rate in hertz
# See http://g.co/cloud/speech/docs/languages
# for a list of supported languages.
language_code='en-US', # a BCP-47 language tag
)
streaming_config = cloud_speech_pb2.StreamingRecognitionConfig(
interim_results=interim_results,
config=recognition_config,
)
yield cloud_speech_pb2.StreamingRecognizeRequest(
streaming_config=streaming_config)
for data in data_stream:
# Subsequent requests can all just have the content
yield cloud_speech_pb2.StreamingRecognizeRequest(audio_content=data)
def test_async_recognize(self, mock_create_stub):
# Mock gRPC layer
grpc_stub = mock.Mock()
mock_create_stub.return_value = grpc_stub
client = speech_client.SpeechClient()
# Mock request
encoding = enums.RecognitionConfig.AudioEncoding.FLAC
sample_rate = 44100
config = cloud_speech_pb2.RecognitionConfig(encoding=encoding,
sample_rate=sample_rate)
uri = 'gs://bucket_name/file_name.flac'
audio = cloud_speech_pb2.RecognitionAudio(uri=uri)
# Mock response
expected_response = cloud_speech_pb2.AsyncRecognizeResponse()
operation = operations_pb2.Operation(
name='operations/test_async_recognize', done=True)
operation.response.Pack(expected_response)
grpc_stub.AsyncRecognize.return_value = operation
response = client.async_recognize(config, audio)
self.assertEqual(expected_response, response.result())
grpc_stub.AsyncRecognize.assert_called_once()
args, kwargs = grpc_stub.AsyncRecognize.call_args
self.assertEqual(len(args), 2)
self.assertEqual(len(kwargs), 1)
self.assertIn('metadata', kwargs)
actual_request = args[0]
expected_request = cloud_speech_pb2.AsyncRecognizeRequest(
config=config, audio=audio)
self.assertEqual(expected_request, actual_request)
def main(input_uri, encoding, sample_rate, language_code='en-US'):
service = cloud_speech_pb2.SpeechStub(
make_channel('speech.googleapis.com', 443))
# The method and parameters can be inferred from the proto from which the
# grpc client lib was generated. See:
# https://github.com/googleapis/googleapis/blob/master/google/cloud/speech/v1beta1/cloud_speech.proto
response = service.SyncRecognize(
cloud_speech_pb2.SyncRecognizeRequest(
config=cloud_speech_pb2.RecognitionConfig(
# There are a bunch of config options you can specify. See
# https://goo.gl/KPZn97 for the full list.
encoding=encoding, # one of LINEAR16, FLAC, MULAW, AMR, AMR_WB
sample_rate=sample_rate, # the rate in hertz
# See https://g.co/cloud/speech/docs/languages for a list of
# supported languages.
language_code=language_code, # a BCP-47 language tag
),
audio=cloud_speech_pb2.RecognitionAudio(uri=input_uri, )),
DEADLINE_SECS)
# Print the recognition result alternatives and confidence scores.
for result in response.results:
print('Result:')
for alternative in result.alternatives:
print(u' ({}): {}'.format(alternative.confidence,
alternative.transcript))
def test_sync_recognize():
api = speech_client.SpeechClient()
config = types.RecognitionConfig(encoding=ENCODING,
sample_rate=SAMPLE_RATE)
audio = types.RecognitionAudio(uri=INPUT_URI)
response = api.sync_recognize(config, audio)
print response
def test_async_recognize():
def callback(operation_future):
print(operation_future.result())
api = speech_client.SpeechClient()
config = types.RecognitionConfig(encoding=ENCODING,
sample_rate=SAMPLE_RATE)
audio = types.RecognitionAudio(uri=INPUT_URI)
response = api.async_recognize(config, audio)
response.add_done_callback(callback)
print("Metadata: \n%s\n" % response.metadata())
def main(input_uri, encoding, sample_rate, language_code='en-US'):
channel = make_channel('speech.googleapis.com', 443)
service = cloud_speech_pb2.SpeechStub(channel)
# The method and parameters can be inferred from the proto from which the
# grpc client lib was generated. See:
# https://github.com/googleapis/googleapis/blob/master/google/cloud/speech/v1beta1/cloud_speech.proto
operation = service.AsyncRecognize(
cloud_speech_pb2.AsyncRecognizeRequest(
config=cloud_speech_pb2.RecognitionConfig(
# There are a bunch of config options you can specify. See
# https://goo.gl/KPZn97 for the full list.
encoding=encoding, # one of LINEAR16, FLAC, MULAW, AMR, AMR_WB
sample_rate=sample_rate, # the rate in hertz
# See https://g.co/cloud/speech/docs/languages for a list of
# supported languages.
language_code=language_code, # a BCP-47 language tag
),
audio=cloud_speech_pb2.RecognitionAudio(uri=input_uri, )),
DEADLINE_SECS)
# Print the longrunning operation handle.
print(operation)
# Construct a long running operation endpoint.
service = operations_pb2.OperationsStub(channel)
name = operation.name
while True:
# Give the server a few seconds to process.
print('Waiting for server processing...')
time.sleep(1)
operation = service.GetOperation(
operations_pb2.GetOperationRequest(name=name), DEADLINE_SECS)
if operation.error.message:
print('\nOperation error:\n{}'.format(operation.error))
if operation.done:
break
response = cloud_speech_pb2.AsyncRecognizeResponse()
operation.response.Unpack(response)
# Print the recognition result alternatives and confidence scores.
for result in response.results:
print('Result:')
for alternative in result.alternatives:
print(u' ({}): {}'.format(alternative.confidence,
alternative.transcript))
def test_sync_recognize_exception(self, mock_create_stub):
# Mock gRPC layer
grpc_stub = mock.Mock()
mock_create_stub.return_value = grpc_stub
client = speech_client.SpeechClient()
# Mock request
encoding = enums.RecognitionConfig.AudioEncoding.FLAC
sample_rate = 44100
config = cloud_speech_pb2.RecognitionConfig(encoding=encoding,
sample_rate=sample_rate)
uri = 'gs://bucket_name/file_name.flac'
audio = cloud_speech_pb2.RecognitionAudio(uri=uri)
# Mock exception response
grpc_stub.SyncRecognize.side_effect = CustomException()
self.assertRaises(errors.GaxError, client.sync_recognize, config,
audio)
def request_transcribe_sync(self, content):
"""
TODO: Description.
:param content:
:return:
"""
service = cloud_speech_pb2.SpeechStub(
self.make_channel('speech.googleapis.com', 443))
# The method and parameters can be inferred from the proto from which the
# grpc client lib was generated. See:
# https://github.com/googleapis/googleapis/blob/master/google/cloud/speech/v1beta1/cloud_speech.proto
response = service.SyncRecognize(
cloud_speech_pb2.SyncRecognizeRequest(
config=cloud_speech_pb2.RecognitionConfig(
# There are a bunch of config options you can specify. See
# https://goo.gl/KPZn97 for the full list.
encoding=self.
encoding, # one of LINEAR16, FLAC, MULAW, AMR, AMR_WB
sample_rate=self.sample_rate, # the rate in hertz
# See https://g.co/cloud/speech/docs/languages for a list of
# supported languages.
language_code=self.language_code, # a BCP-47 language tag
),
audio=cloud_speech_pb2.RecognitionAudio(content=content, )),
DEADLINE_SECS)
# Print the recognition result alternatives and confidence scores.
alternatives = []
for result in response.results:
for alternative in result.alternatives:
alternatives.append({
'service_name': self.config['service_name'],
'confidence': alternative.confidence,
'transcript': alternative.transcript
})
return alternatives
def test_async_recognize_exception(self, mock_create_stub):
# Mock gRPC layer
grpc_stub = mock.Mock()
mock_create_stub.return_value = grpc_stub
client = speech_client.SpeechClient()
# Mock request
encoding = enums.RecognitionConfig.AudioEncoding.FLAC
sample_rate = 44100
config = cloud_speech_pb2.RecognitionConfig(encoding=encoding,
sample_rate=sample_rate)
uri = 'gs://bucket_name/file_name.flac'
audio = cloud_speech_pb2.RecognitionAudio(uri=uri)
# Mock exception response
error = status_pb2.Status()
operation = operations_pb2.Operation(
name='operations/test_async_recognize_exception', done=True)
operation.error.CopyFrom(error)
grpc_stub.AsyncRecognize.return_value = operation
response = client.async_recognize(config, audio)
self.assertEqual(error, response.exception())