Class: Google::Cloud::TextToSpeech::V1::TextToSpeechClient

Inherits:
Object
  • Object
show all
Defined in:
lib/google/cloud/text_to_speech/v1/text_to_speech_client.rb

Overview

Service that implements Google Cloud Text-to-Speech API.

Constant Summary collapse

SERVICE_ADDRESS =

The default address of the service.

"texttospeech.googleapis.com".freeze
DEFAULT_SERVICE_PORT =

The default port of the service.

443
GRPC_INTERCEPTORS =

The default set of gRPC interceptors.

[]
DEFAULT_TIMEOUT = 
30
ALL_SCOPES =

The scopes needed to make gRPC calls to all of the methods defined in this service.

[
  "https://www.googleapis.com/auth/cloud-platform"
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(credentials: nil, scopes: ALL_SCOPES, client_config: {}, timeout: DEFAULT_TIMEOUT, metadata: nil, exception_transformer: nil, lib_name: nil, lib_version: "") ⇒ TextToSpeechClient

Returns a new instance of TextToSpeechClient

Parameters:

  • credentials (Google::Auth::Credentials, String, Hash, GRPC::Core::Channel, GRPC::Core::ChannelCredentials, Proc) —

    Provides the means for authenticating requests made by the client. This parameter can be many types. A Google::Auth::Credentials uses a the properties of its represented keyfile for authenticating requests made by this client. A String will be treated as the path to the keyfile to be used for the construction of credentials for this client. A Hash will be treated as the contents of a keyfile to be used for the construction of credentials for this client. A GRPC::Core::Channel will be used to make calls through. A GRPC::Core::ChannelCredentials for the setting up the RPC client. The channel credentials should already be composed with a GRPC::Core::CallCredentials object. A Proc will be used as an updater_proc for the Grpc channel. The proc transforms the metadata for requests, generally, to give OAuth credentials.

  • scopes (Array<String>) —

    The OAuth scopes for this service. This parameter is ignored if an updater_proc is supplied.

  • client_config (Hash) —

    A Hash for call options for each method. See Google::Gax#construct_settings for the structure of this data. Falls back to the default config if not specified or the specified config is missing data points.

  • timeout (Numeric) —

    The default timeout, in seconds, for calls made through this client.

  • metadata (Hash) —

    Default metadata to be sent with each request. This can be overridden on a per call basis.

  • exception_transformer (Proc) —

    An optional proc that intercepts any exceptions raised during an API call to inject custom error handling.



88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
 
# File 'lib/google/cloud/text_to_speech/v1/text_to_speech_client.rb', line 88

def initialize \
    credentials: nil,
    scopes: ALL_SCOPES,
    client_config: {},
    timeout: DEFAULT_TIMEOUT,
    metadata: nil,
    exception_transformer: nil,
    lib_name: nil,
    lib_version: ""
  # These require statements are intentionally placed here to initialize
  # the gRPC module only when it's required.
  # See https://github.com/googleapis/toolkit/issues/446
  require "google/gax/grpc"
  require "google/cloud/texttospeech/v1/cloud_tts_services_pb"

  credentials ||= Google::Cloud::TextToSpeech::V1::Credentials.default

  if credentials.is_a?(String) || credentials.is_a?(Hash)
    updater_proc = Google::Cloud::TextToSpeech::V1::Credentials.new(credentials).updater_proc
  end
  if credentials.is_a?(GRPC::Core::Channel)
    channel = credentials
  end
  if credentials.is_a?(GRPC::Core::ChannelCredentials)
    chan_creds = credentials
  end
  if credentials.is_a?(Proc)
    updater_proc = credentials
  end
  if credentials.is_a?(Google::Auth::Credentials)
    updater_proc = credentials.updater_proc
  end

  package_version = Gem.loaded_specs['google-cloud-text_to_speech'].version.version

  google_api_client = "gl-ruby/#{RUBY_VERSION}"
  google_api_client << " #{lib_name}/#{lib_version}" if lib_name
  google_api_client << " gapic/#{package_version} gax/#{Google::Gax::VERSION}"
  google_api_client << " grpc/#{GRPC::VERSION}"
  google_api_client.freeze

  headers = { :"x-goog-api-client" => google_api_client }
  headers.merge!(metadata) unless metadata.nil?
  client_config_file = Pathname.new(__dir__).join(
    "text_to_speech_client_config.json"
  )
  defaults = client_config_file.open do |f|
    Google::Gax.construct_settings(
      "google.cloud.texttospeech.v1.TextToSpeech",
      JSON.parse(f.read),
      client_config,
      Google::Gax::Grpc::STATUS_CODE_NAMES,
      timeout,
      errors: Google::Gax::Grpc::API_ERRORS,
      metadata: headers
    )
  end

  # Allow overriding the service path/port in subclasses.
  service_path = self.class::SERVICE_ADDRESS
  port = self.class::DEFAULT_SERVICE_PORT
  interceptors = self.class::GRPC_INTERCEPTORS
  @text_to_speech_stub = Google::Gax::Grpc.create_stub(
    service_path,
    port,
    chan_creds: chan_creds,
    channel: channel,
    updater_proc: updater_proc,
    scopes: scopes,
    interceptors: interceptors,
    &Google::Cloud::Texttospeech::V1::TextToSpeech::Stub.method(:new)
  )

  @list_voices = Google::Gax.create_api_call(
    @text_to_speech_stub.method(:list_voices),
    defaults["list_voices"],
    exception_transformer: exception_transformer
  )
  @synthesize_speech = Google::Gax.create_api_call(
    @text_to_speech_stub.method(:synthesize_speech),
    defaults["synthesize_speech"],
    exception_transformer: exception_transformer
  )
end

Instance Attribute Details

#text_to_speech_stub ⇒ Google::Cloud::Texttospeech::V1::TextToSpeech::Stub (readonly)

Returns:

  • (Google::Cloud::Texttospeech::V1::TextToSpeech::Stub) 


38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
 
# File 'lib/google/cloud/text_to_speech/v1/text_to_speech_client.rb', line 38

class TextToSpeechClient
  attr_reader :text_to_speech_stub

  # The default address of the service.
  SERVICE_ADDRESS = "texttospeech.googleapis.com".freeze

  # The default port of the service.
  DEFAULT_SERVICE_PORT = 443

  # The default set of gRPC interceptors.
  GRPC_INTERCEPTORS = []

  DEFAULT_TIMEOUT = 30

  # The scopes needed to make gRPC calls to all of the methods defined in
  # this service.
  ALL_SCOPES = [
    "https://www.googleapis.com/auth/cloud-platform"
  ].freeze


  # @param credentials [Google::Auth::Credentials, String, Hash, GRPC::Core::Channel, GRPC::Core::ChannelCredentials, Proc]
  #   Provides the means for authenticating requests made by the client. This parameter can
  #   be many types.
  #   A `Google::Auth::Credentials` uses a the properties of its represented keyfile for
  #   authenticating requests made by this client.
  #   A `String` will be treated as the path to the keyfile to be used for the construction of
  #   credentials for this client.
  #   A `Hash` will be treated as the contents of a keyfile to be used for the construction of
  #   credentials for this client.
  #   A `GRPC::Core::Channel` will be used to make calls through.
  #   A `GRPC::Core::ChannelCredentials` for the setting up the RPC client. The channel credentials
  #   should already be composed with a `GRPC::Core::CallCredentials` object.
  #   A `Proc` will be used as an updater_proc for the Grpc channel. The proc transforms the
  #   metadata for requests, generally, to give OAuth credentials.
  # @param scopes [Array<String>]
  #   The OAuth scopes for this service. This parameter is ignored if
  #   an updater_proc is supplied.
  # @param client_config [Hash]
  #   A Hash for call options for each method. See
  #   Google::Gax#construct_settings for the structure of
  #   this data. Falls back to the default config if not specified
  #   or the specified config is missing data points.
  # @param timeout [Numeric]
  #   The default timeout, in seconds, for calls made through this client.
  # @param metadata [Hash]
  #   Default metadata to be sent with each request. This can be overridden on a per call basis.
  # @param exception_transformer [Proc]
  #   An optional proc that intercepts any exceptions raised during an API call to inject
  #   custom error handling.
  def initialize \
      credentials: nil,
      scopes: ALL_SCOPES,
      client_config: {},
      timeout: DEFAULT_TIMEOUT,
      metadata: nil,
      exception_transformer: nil,
      lib_name: nil,
      lib_version: ""
    # These require statements are intentionally placed here to initialize
    # the gRPC module only when it's required.
    # See https://github.com/googleapis/toolkit/issues/446
    require "google/gax/grpc"
    require "google/cloud/texttospeech/v1/cloud_tts_services_pb"

    credentials ||= Google::Cloud::TextToSpeech::V1::Credentials.default

    if credentials.is_a?(String) || credentials.is_a?(Hash)
      updater_proc = Google::Cloud::TextToSpeech::V1::Credentials.new(credentials).updater_proc
    end
    if credentials.is_a?(GRPC::Core::Channel)
      channel = credentials
    end
    if credentials.is_a?(GRPC::Core::ChannelCredentials)
      chan_creds = credentials
    end
    if credentials.is_a?(Proc)
      updater_proc = credentials
    end
    if credentials.is_a?(Google::Auth::Credentials)
      updater_proc = credentials.updater_proc
    end

    package_version = Gem.loaded_specs['google-cloud-text_to_speech'].version.version

    google_api_client = "gl-ruby/#{RUBY_VERSION}"
    google_api_client << " #{lib_name}/#{lib_version}" if lib_name
    google_api_client << " gapic/#{package_version} gax/#{Google::Gax::VERSION}"
    google_api_client << " grpc/#{GRPC::VERSION}"
    google_api_client.freeze

    headers = { :"x-goog-api-client" => google_api_client }
    headers.merge!(metadata) unless metadata.nil?
    client_config_file = Pathname.new(__dir__).join(
      "text_to_speech_client_config.json"
    )
    defaults = client_config_file.open do |f|
      Google::Gax.construct_settings(
        "google.cloud.texttospeech.v1.TextToSpeech",
        JSON.parse(f.read),
        client_config,
        Google::Gax::Grpc::STATUS_CODE_NAMES,
        timeout,
        errors: Google::Gax::Grpc::API_ERRORS,
        metadata: headers
      )
    end

    # Allow overriding the service path/port in subclasses.
    service_path = self.class::SERVICE_ADDRESS
    port = self.class::DEFAULT_SERVICE_PORT
    interceptors = self.class::GRPC_INTERCEPTORS
    @text_to_speech_stub = Google::Gax::Grpc.create_stub(
      service_path,
      port,
      chan_creds: chan_creds,
      channel: channel,
      updater_proc: updater_proc,
      scopes: scopes,
      interceptors: interceptors,
      &Google::Cloud::Texttospeech::V1::TextToSpeech::Stub.method(:new)
    )

    @list_voices = Google::Gax.create_api_call(
      @text_to_speech_stub.method(:list_voices),
      defaults["list_voices"],
      exception_transformer: exception_transformer
    )
    @synthesize_speech = Google::Gax.create_api_call(
      @text_to_speech_stub.method(:synthesize_speech),
      defaults["synthesize_speech"],
      exception_transformer: exception_transformer
    )
  end

  # Service calls

  # Returns a list of {Google::Cloud::Texttospeech::V1::Voice Voice}
  # supported for synthesis.
  #
  # @param language_code [String]
  #   Optional (but recommended)
  #   [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag. If
  #   specified, the ListVoices call will only return voices that can be used to
  #   synthesize this language_code. E.g. when specifying "en-NZ", you will get
  #   supported "en-*" voices; when specifying "no", you will get supported
  #   "no-*" (Norwegian) and "nb-*" (Norwegian Bokmal) voices; specifying "zh"
  #   will also get supported "cmn-*" voices; specifying "zh-hk" will also get
  #   supported "yue-*" voices.
  # @param options [Google::Gax::CallOptions]
  #   Overrides the default settings for this call, e.g, timeout,
  #   retries, etc.
  # @yield [result, operation] Access the result along with the RPC operation
  # @yieldparam result [Google::Cloud::Texttospeech::V1::ListVoicesResponse]
  # @yieldparam operation [GRPC::ActiveCall::Operation]
  # @return [Google::Cloud::Texttospeech::V1::ListVoicesResponse]
  # @raise [Google::Gax::GaxError] if the RPC is aborted.
  # @example
  #   require "google/cloud/text_to_speech/v1"
  #
  #   text_to_speech_client = Google::Cloud::TextToSpeech::V1.new
  #   response = text_to_speech_client.list_voices

  def list_voices \
      language_code: nil,
      options: nil,
      &block
    req = {
      language_code: language_code
    }.delete_if { |_, v| v.nil? }
    req = Google::Gax::to_proto(req, Google::Cloud::Texttospeech::V1::ListVoicesRequest)
    @list_voices.call(req, options, &block)
  end

  # Synthesizes speech synchronously: receive results after all text input
  # has been processed.
  #
  # @param input [Google::Cloud::Texttospeech::V1::SynthesisInput | Hash]
  #   Required. The Synthesizer requires either plain text or SSML as input.
  #   A hash of the same form as `Google::Cloud::Texttospeech::V1::SynthesisInput`
  #   can also be provided.
  # @param voice [Google::Cloud::Texttospeech::V1::VoiceSelectionParams | Hash]
  #   Required. The desired voice of the synthesized audio.
  #   A hash of the same form as `Google::Cloud::Texttospeech::V1::VoiceSelectionParams`
  #   can also be provided.
  # @param audio_config [Google::Cloud::Texttospeech::V1::AudioConfig | Hash]
  #   Required. The configuration of the synthesized audio.
  #   A hash of the same form as `Google::Cloud::Texttospeech::V1::AudioConfig`
  #   can also be provided.
  # @param options [Google::Gax::CallOptions]
  #   Overrides the default settings for this call, e.g, timeout,
  #   retries, etc.
  # @yield [result, operation] Access the result along with the RPC operation
  # @yieldparam result [Google::Cloud::Texttospeech::V1::SynthesizeSpeechResponse]
  # @yieldparam operation [GRPC::ActiveCall::Operation]
  # @return [Google::Cloud::Texttospeech::V1::SynthesizeSpeechResponse]
  # @raise [Google::Gax::GaxError] if the RPC is aborted.
  # @example
  #   require "google/cloud/text_to_speech/v1"
  #
  #   text_to_speech_client = Google::Cloud::TextToSpeech::V1.new
  #
  #   # TODO: Initialize +input+:
  #   input = {}
  #
  #   # TODO: Initialize +voice+:
  #   voice = {}
  #
  #   # TODO: Initialize +audio_config+:
  #   audio_config = {}
  #   response = text_to_speech_client.synthesize_speech(input, voice, audio_config)

  def synthesize_speech \
      input,
      voice,
      audio_config,
      options: nil,
      &block
    req = {
      input: input,
      voice: voice,
      audio_config: audio_config
    }.delete_if { |_, v| v.nil? }
    req = Google::Gax::to_proto(req, Google::Cloud::Texttospeech::V1::SynthesizeSpeechRequest)
    @synthesize_speech.call(req, options, &block)
  end
end

Instance Method Details

#list_voices(language_code: nil, options: nil) {|result, operation| ... } ⇒ Google::Cloud::Texttospeech::V1::ListVoicesResponse

Returns a list of Voice supported for synthesis.

Examples:

require "google/cloud/text_to_speech/v1"

text_to_speech_client = Google::Cloud::TextToSpeech::V1.new
response = text_to_speech_client.list_voices

Parameters:

  • language_code (String) —

    Optional (but recommended) BCP-47 language tag. If specified, the ListVoices call will only return voices that can be used to synthesize this language_code. E.g. when specifying "en-NZ", you will get supported "en-" voices; when specifying "no", you will get supported "no-" (Norwegian) and "nb-" (Norwegian Bokmal) voices; specifying "zh" will also get supported "cmn-" voices; specifying "zh-hk" will also get supported "yue-*" voices.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



201
202
203
204
205
206
207
208
209
210
 
# File 'lib/google/cloud/text_to_speech/v1/text_to_speech_client.rb', line 201

def list_voices \
    language_code: nil,
    options: nil,
    &block
  req = {
    language_code: language_code
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Cloud::Texttospeech::V1::ListVoicesRequest)
  @list_voices.call(req, options, &block)
end

#synthesize_speech(input, voice, audio_config, options: nil) {|result, operation| ... } ⇒ Google::Cloud::Texttospeech::V1::SynthesizeSpeechResponse

Synthesizes speech synchronously: receive results after all text input has been processed.

Examples:

require "google/cloud/text_to_speech/v1"

text_to_speech_client = Google::Cloud::TextToSpeech::V1.new

# TODO: Initialize +input+:
input = {}

# TODO: Initialize +voice+:
voice = {}

# TODO: Initialize +audio_config+:
audio_config = {}
response = text_to_speech_client.synthesize_speech(input, voice, audio_config)

Parameters:

  • input (Google::Cloud::Texttospeech::V1::SynthesisInput | Hash) —

    Required. The Synthesizer requires either plain text or SSML as input. A hash of the same form as Google::Cloud::Texttospeech::V1::SynthesisInput can also be provided.

  • voice (Google::Cloud::Texttospeech::V1::VoiceSelectionParams | Hash) —

    Required. The desired voice of the synthesized audio. A hash of the same form as Google::Cloud::Texttospeech::V1::VoiceSelectionParams can also be provided.

  • audio_config (Google::Cloud::Texttospeech::V1::AudioConfig | Hash) —

    Required. The configuration of the synthesized audio. A hash of the same form as Google::Cloud::Texttospeech::V1::AudioConfig can also be provided.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



250
251
252
253
254
255
256
257
258
259
260
261
262
263
 
# File 'lib/google/cloud/text_to_speech/v1/text_to_speech_client.rb', line 250

def synthesize_speech \
    input,
    voice,
    audio_config,
    options: nil,
    &block
  req = {
    input: input,
    voice: voice,
    audio_config: audio_config
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Cloud::Texttospeech::V1::SynthesizeSpeechRequest)
  @synthesize_speech.call(req, options, &block)
end