Class SpeechClient (2.30.0)

Service that implements Google Cloud Speech API.

Equality

Instances of this class created via copy-construction or copy-assignment always compare equal. Instances created with equal std::shared_ptr<*Connection> objects compare equal. Objects that compare equal share the same underlying resources.

Performance

Creating a new instance of this class is a relatively expensive operation, new objects establish new connections to the service. In contrast, copy-construction, move-construction, and the corresponding assignment operations are relatively efficient as the copies share all underlying resources.

Thread Safety

Concurrent access to different instances of this class, even if they compare equal, is guaranteed to work. Two or more threads operating on the same instance of this class is not guaranteed to work. Since copy-construction and move-construction is a relatively efficient operation, consider using such a copy when using this class from multiple threads.

Constructors

SpeechClient(SpeechClient const &)

Copy and move support

Parameter
Name	Description
	`SpeechClient const &`

SpeechClient(SpeechClient &&)

Copy and move support

Parameter
Name	Description
	`SpeechClient &&`

SpeechClient(std::shared_ptr< SpeechConnection >, Options)

Parameters
Name	Description
`connection`	`std::shared_ptr< SpeechConnection >`
`opts`	`Options`

Operators

operator=(SpeechClient const &)

Copy and move support

Parameter
Name	Description
	`SpeechClient const &`

Returns
Type	Description
`SpeechClient &`

operator=(SpeechClient &&)

Copy and move support

Parameter
Name	Description
	`SpeechClient &&`

Returns
Type	Description
`SpeechClient &`

Functions

Recognize(google::cloud::speech::v1::RecognitionConfig const &, google::cloud::speech::v1::RecognitionAudio const &, Options)

Performs synchronous speech recognition: receive results after all audio has been sent and processed.

Parameters
Name	Description
`config`	`google::cloud::speech::v1::RecognitionConfig const &` Required. Provides information to the recognizer that specifies how to process the request.
`audio`	`google::cloud::speech::v1::RecognitionAudio const &` Required. The audio data to be recognized.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::cloud::speech::v1::RecognizeResponse >`	the result of the RPC. The response message type (google.cloud.speech.v1.RecognizeResponse) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

Recognize(google::cloud::speech::v1::RecognizeRequest const &, Options)

Performs synchronous speech recognition: receive results after all audio has been sent and processed.

Parameters
Name	Description
`request`	`google::cloud::speech::v1::RecognizeRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.cloud.speech.v1.RecognizeRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::cloud::speech::v1::RecognizeResponse >`	the result of the RPC. The response message type (google.cloud.speech.v1.RecognizeResponse) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

LongRunningRecognize(google::cloud::speech::v1::RecognitionConfig const &, google::cloud::speech::v1::RecognitionAudio const &, Options)

Performs asynchronous speech recognition: receive results via the google.longrunning.Operations interface.

Returns either an Operation.error or an Operation.response which contains a LongRunningRecognizeResponse message. For more information on asynchronous speech recognition, see the how-to.

Parameters
Name	Description
`config`	`google::cloud::speech::v1::RecognitionConfig const &` Required. Provides information to the recognizer that specifies how to process the request.
`audio`	`google::cloud::speech::v1::RecognitionAudio const &` Required. The audio data to be recognized.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::cloud::speech::v1::LongRunningRecognizeResponse > >

A future that becomes satisfied when the LRO (Long Running Operation) completes or the polling policy in effect for this call is exhausted. The future is satisfied with an error if the LRO completes with an error or the polling policy is exhausted. In this case the StatusOr returned by the future contains the error. If the LRO completes successfully the value of the future contains the LRO's result. For this RPC the result is a google.cloud.speech.v1.LongRunningRecognizeResponse proto message. The C++ class representing this message is created by Protobuf, using the Protobuf mapping rules.

LongRunningRecognize(NoAwaitTag, google::cloud::speech::v1::RecognitionConfig const &, google::cloud::speech::v1::RecognitionAudio const &, Options)

Performs asynchronous speech recognition: receive results via the google.longrunning.Operations interface.

Specifying the NoAwaitTag immediately returns the [google::longrunning::Operation] that corresponds to the Long Running Operation that has been started. No polling for operation status occurs.

Parameters
Name	Description
	`NoAwaitTag`
`config`	`google::cloud::speech::v1::RecognitionConfig const &`
`audio`	`google::cloud::speech::v1::RecognitionAudio const &`
`opts`	`Options`

Returns
Type	Description
`StatusOr< google::longrunning::Operation >`

LongRunningRecognize(google::cloud::speech::v1::LongRunningRecognizeRequest const &, Options)

Performs asynchronous speech recognition: receive results via the google.longrunning.Operations interface.

Returns either an Operation.error or an Operation.response which contains a LongRunningRecognizeResponse message. For more information on asynchronous speech recognition, see the how-to.

Parameters
Name	Description
`request`	`google::cloud::speech::v1::LongRunningRecognizeRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.cloud.speech.v1.LongRunningRecognizeRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::cloud::speech::v1::LongRunningRecognizeResponse > >

LongRunningRecognize(NoAwaitTag, google::cloud::speech::v1::LongRunningRecognizeRequest const &, Options)

Performs asynchronous speech recognition: receive results via the google.longrunning.Operations interface.

Specifying the NoAwaitTag immediately returns the [google::longrunning::Operation] that corresponds to the Long Running Operation that has been started. No polling for operation status occurs.

Parameters
Name	Description
	`NoAwaitTag`
`request`	`google::cloud::speech::v1::LongRunningRecognizeRequest const &`
`opts`	`Options`

Returns
Type	Description
`StatusOr< google::longrunning::Operation >`

LongRunningRecognize(google::longrunning::Operation const &, Options)

Performs asynchronous speech recognition: receive results via the google.longrunning.Operations interface.

This method accepts a google::longrunning::Operation that corresponds to a previously started Long Running Operation (LRO) and polls the status of the LRO in the background.

Parameters
Name	Description
`operation`	`google::longrunning::Operation const &`
`opts`	`Options`

Returns
Type	Description
`future< StatusOr< google::cloud::speech::v1::LongRunningRecognizeResponse > >`

AsyncStreamingRecognize(Options)

Performs bidirectional streaming speech recognition: receive results while sending audio.

This method is only available via the gRPC API (not REST).

Parameter
Name	Description
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

std::unique_ptr<::google::cloud::AsyncStreamingReadWriteRpc< google::cloud::speech::v1::StreamingRecognizeRequest, google::cloud::speech::v1::StreamingRecognizeResponse > >

An object representing the bidirectional streaming RPC. Applications can send multiple request messages and receive multiple response messages through this API. Bidirectional streaming RPCs can impose restrictions on the sequence of request and response messages. Please consult the service documentation for details. The request message type (google.cloud.speech.v1.StreamingRecognizeRequest) and response messages (google.cloud.speech.v1.StreamingRecognizeResponse) are mapped to C++ classes using the Protobuf mapping rules.