feat: adds support for MULAW and ALAW audio encoding (#565)

PiperOrigin-RevId: 410256789
Source-Link: googleapis/googleapis@b3ff183
Source-Link: googleapis/googleapis-gen@488fbdc
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See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md=
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

protos/google/cloud/texttospeech/v1/cloud_tts.proto

@@ -1,4 +1,4 @@
-// Copyright 2019 Google LLC.
+// Copyright 2021 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,7 +11,6 @@
 // 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.
-//
 
 syntax = "proto3";
 
@@ -20,6 +19,7 @@ package google.cloud.texttospeech.v1;
 import "google/api/annotations.proto";
 import "google/api/client.proto";
 import "google/api/field_behavior.proto";
+import "google/api/resource.proto";
 
 option cc_enable_arenas = true;
 option csharp_namespace = "Google.Cloud.TextToSpeech.V1";
@@ -29,6 +29,10 @@ option java_outer_classname = "TextToSpeechProto";
 option java_package = "com.google.cloud.texttospeech.v1";
 option php_namespace = "Google\\Cloud\\TextToSpeech\\V1";
 option ruby_package = "Google::Cloud::TextToSpeech::V1";
+option (google.api.resource_definition) = {
+  type: "automl.googleapis.com/Model"
+  pattern: "projects/{project}/locations/{location}/models/{model}"
+};
 
 // Service that implements Google Cloud Text-to-Speech API.
 service TextToSpeech {
@@ -83,7 +87,7 @@ enum SsmlVoiceGender {
   // A female voice.
   FEMALE = 2;
 
-  // A gender-neutral voice.
+  // A gender-neutral voice. This voice is not yet supported.
   NEUTRAL = 3;
 }
 
@@ -105,6 +109,14 @@ enum AudioEncoding {
   // Chrome and Firefox). The quality of the encoding is considerably higher
   // than MP3 while using approximately the same bitrate.
   OGG_OPUS = 3;
+
+  // 8-bit samples that compand 14-bit audio samples using G.711 PCMU/mu-law.
+  // Audio content returned as MULAW also contains a WAV header.
+  MULAW = 5;
+
+  // 8-bit samples that compand 14-bit audio samples using G.711 PCMU/A-law.
+  // Audio content returned as ALAW also contains a WAV header.
+  ALAW = 6;
 }
 
 // The message returned to the client by the `ListVoices` method.

src/v1/text_to_speech_client_config.json

@@ -21,12 +21,12 @@
       },
       "methods": {
         "ListVoices": {
-          "timeout_millis": 600000,
+          "timeout_millis": 300000,
           "retry_codes_name": "idempotent",
           "retry_params_name": "default"
         },
         "SynthesizeSpeech": {
-          "timeout_millis": 600000,
+          "timeout_millis": 300000,
           "retry_codes_name": "idempotent",
           "retry_params_name": "default"
         }