SpeechClient

Service that implements Google Cloud Speech API.

Constructor

new SpeechClient(optionsopt)

Construct an instance of SpeechClient.

Parameters:

Name Type Attributes Description

options

object

The configuration object. The options accepted by the constructor are described in detail in this document. The common options are:

Properties

Name Type Attributes Description

credentials

object

Credentials object.

Properties

Name	Type	Attributes	Description
`client_email`	string	<optional>
`private_key`	string	<optional>

email

string

Account email address. Required when using a .pem or .p12 keyFilename.

keyFilename

string

Full path to the a .json, .pem, or .p12 key downloaded from the Google Developers Console. If you provide a path to a JSON file, the projectId option below is not necessary. NOTE: .pem and .p12 require you to specify options.email as well.

port

number

The port on which to connect to the remote host.

projectId

string

The project ID from the Google Developer's Console, e.g. 'grape-spaceship-123'. We will also check the environment variable GCLOUD_PROJECT for your project ID. If your app is running in an environment which supports Application Default Credentials, your project ID will be detected automatically.

apiEndpoint

string

The domain name of the API remote host.

clientConfig

gax.ClientConfig

Client configuration override. Follows the structure of gapicConfig.

fallback

boolean | "rest"

Use HTTP fallback mode. Pass "rest" to use HTTP/1.1 REST API instead of gRPC. For more information, please check the documentation.

Members

apiEndpoint

The DNS address for this API service - same as servicePath(), exists for compatibility reasons.

port

The port for this API service.

scopes

The scopes needed to make gRPC calls for every method defined in this service.

servicePath

The DNS address for this API service.

Methods

_streamingRecognize(optionsopt) → {Stream}

Performs bidirectional streaming speech recognition: receive results while sending audio. This method is only available via the gRPC API (not REST).

Parameters:

Name	Type	Attributes	Description
`options`	object	<optional>	Call options. See CallOptions for more details.

Returns:

Type	Description
Stream	An object stream which is both readable and writable. It accepts objects representing StreamingRecognizeRequest for write() method, and will emit objects representing StreamingRecognizeResponse on 'data' event asynchronously. Please see the documentation for more details and examples.

Example

  /**
   * This snippet has been automatically generated and should be regarded as a code template only.
   * It will require modifications to work.
   * It may require correct/in-range values for request initialization.
   * TODO(developer): Uncomment these variables before running the sample.
   */
  /**
   *  Provides information to the recognizer that specifies how to process the
   *  request. The first `StreamingRecognizeRequest` message must contain a
   *  `streaming_config`  message.
   */
  // const streamingConfig = {}
  /**
   *  The audio data to be recognized. Sequential chunks of audio data are sent
   *  in sequential `StreamingRecognizeRequest` messages. The first
   *  `StreamingRecognizeRequest` message must not contain `audio_content` data
   *  and all subsequent `StreamingRecognizeRequest` messages must contain
   *  `audio_content` data. The audio bytes must be encoded as specified in
   *  `RecognitionConfig`. Note: as with all bytes fields, proto buffers use a
   *  pure binary representation (not base64). See
   *  content limits (https://cloud.google.com/speech-to-text/quotas#content).
   */
  // const audioContent = 'Buffer.from('string')'

  // Imports the Speech library
  const {SpeechClient} = require('@google-cloud/speech').v1p1beta1;

  // Instantiates a client
  const speechClient = new SpeechClient();

  async function callStreamingRecognize() {
    // Construct request
    const request = {
    };

    // Run request
    const stream = await speechClient.streamingRecognize();
    stream.on('data', (response) => { console.log(response) });
    stream.on('error', (err) => { throw(err) });
    stream.on('end', () => { /* API call completed */ });
    stream.write(request);
    stream.end(); 
  }

  callStreamingRecognize();

(async) checkLongRunningRecognizeProgress(name) → {Promise}

Check the status of the long running operation returned by longRunningRecognize().

Parameters:

Name	Type	Description
`name`	String	The operation name that will be passed.

Returns:

Type	Description
Promise	The promise which resolves to an object. The decoded operation object has result and metadata field to get information from. Please see the documentation for more details and examples.

Example

  /**
   * This snippet has been automatically generated and should be regarded as a code template only.
   * It will require modifications to work.
   * It may require correct/in-range values for request initialization.
   * TODO(developer): Uncomment these variables before running the sample.
   */
  /**
   *  Required. Provides information to the recognizer that specifies how to
   *  process the request.
   */
  // const config = {}
  /**
   *  Required. The audio data to be recognized.
   */
  // const audio = {}
  /**
   *  Optional. Specifies an optional destination for the recognition results.
   */
  // const outputConfig = {}

  // Imports the Speech library
  const {SpeechClient} = require('@google-cloud/speech').v1p1beta1;

  // Instantiates a client
  const speechClient = new SpeechClient();

  async function callLongRunningRecognize() {
    // Construct request
    const request = {
      config,
      audio,
    };

    // Run request
    const [operation] = await speechClient.longRunningRecognize(request);
    const [response] = await operation.promise();
    console.log(response);
  }

  callLongRunningRecognize();

close() → {Promise}

Terminate the gRPC channel and close the client.

The client will no longer be usable and all future behavior is undefined.

Returns:

Type	Description
Promise	A promise that resolves when the client is closed.

customClassPath(project, location, custom_class) → {string}

Return a fully-qualified customClass resource name string.

Parameters:

Name	Type	Description
`project`	string
`location`	string
`custom_class`	string

Returns:

Type	Description
string	Resource name string.

getProjectId() → {Promise}

Return the project ID used by this class.

Returns:

Type	Description
Promise	A promise that resolves to string containing the project ID.

initialize() → {Promise}

Initialize the client. Performs asynchronous operations (such as authentication) and prepares the client. This function will be called automatically when any class method is called for the first time, but if you need to initialize it before calling an actual method, feel free to call initialize() directly.

You can await on this method if you want to make sure the client is initialized.

Returns:

Type	Description
Promise	A promise that resolves to an authenticated service stub.

matchCustomClassFromCustomClassName(customClassName) → {string}

Parse the custom_class from CustomClass resource.

Parameters:

Name	Type	Description
`customClassName`	string	A fully-qualified path representing CustomClass resource.

Returns:

Type	Description
string	A string representing the custom_class.

matchLocationFromCustomClassName(customClassName) → {string}

Parse the location from CustomClass resource.

Parameters:

Name	Type	Description
`customClassName`	string	A fully-qualified path representing CustomClass resource.

Returns:

Type	Description
string	A string representing the location.

matchLocationFromPhraseSetName(phraseSetName) → {string}

Parse the location from PhraseSet resource.

Parameters:

Name	Type	Description
`phraseSetName`	string	A fully-qualified path representing PhraseSet resource.

Returns:

Type	Description
string	A string representing the location.

matchPhraseSetFromPhraseSetName(phraseSetName) → {string}

Parse the phrase_set from PhraseSet resource.

Parameters:

Name	Type	Description
`phraseSetName`	string	A fully-qualified path representing PhraseSet resource.

Returns:

Type	Description
string	A string representing the phrase_set.

matchProjectFromCustomClassName(customClassName) → {string}

Parse the project from CustomClass resource.

Parameters:

Name	Type	Description
`customClassName`	string	A fully-qualified path representing CustomClass resource.

Returns:

Type	Description
string	A string representing the project.

matchProjectFromPhraseSetName(phraseSetName) → {string}

Parse the project from PhraseSet resource.

Parameters:

Name	Type	Description
`phraseSetName`	string	A fully-qualified path representing PhraseSet resource.

Returns:

Type	Description
string	A string representing the project.

phraseSetPath(project, location, phrase_set) → {string}

Return a fully-qualified phraseSet resource name string.

Parameters:

Name	Type	Description
`project`	string
`location`	string
`phrase_set`	string

Returns:

Type	Description
string	Resource name string.