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An idiomatic C++ client library for the Cloud Text-to-Speech API, a service to synthesize natural-sounding speech by applying powerful neural network models.
While this library is GA, please note Google Cloud C++ client libraries do not follow Semantic Versioning.
QuickstartThe following shows the code that you'll run in the google/cloud/texttospeech/quickstart/
directory, which should give you a taste of the Cloud Text-to-Speech API C++ client library API.
#include "google/cloud/texttospeech/v1/text_to_speech_client.h"
#include <iostream>
auto constexpr kText = R"""(
Four score and seven years ago our fathers brought forth on this
continent, a new nation, conceived in Liberty, and dedicated to
the proposition that all men are created equal.)""";
int main(int argc, char* argv[]) try {
if (argc != 1) {
std::cerr << "Usage: " << argv[0] << "\n";
return 1;
}
namespace texttospeech = ::google::cloud::texttospeech_v1;
auto client = texttospeech::TextToSpeechClient(
texttospeech::MakeTextToSpeechConnection());
google::cloud::texttospeech::v1::SynthesisInput input;
input.set_text(kText);
google::cloud::texttospeech::v1::VoiceSelectionParams voice;
voice.set_language_code("en-US");
google::cloud::texttospeech::v1::AudioConfig audio;
audio.set_audio_encoding(google::cloud::texttospeech::v1::LINEAR16);
auto response = client.SynthesizeSpeech(input, voice, audio);
if (!response) throw std::move(response).status();
// Normally one would play the results (response->audio_content()) over some
// audio device. For this quickstart, we just print some information.
auto constexpr kWavHeaderSize = 48;
auto constexpr kBytesPerSample = 2; // we asked for LINEAR16
auto const sample_count =
(response->audio_content().size() - kWavHeaderSize) / kBytesPerSample;
std::cout << "The audio has " << sample_count << " samples\n";
return 0;
} catch (google::cloud::Status const& status) {
std::cerr << "google::cloud::Status thrown: " << status << "\n";
return 1;
}
Main classes
The main class in this library is texttospeech_v1::TextToSpeechClient
. All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock texttospeech_v1::TextToSpeechClient
when testing your application.
The library automatically retries requests that fail with transient errors, and uses exponential backoff to backoff between retries. Application developers can override the default policies.
More InformationExcept as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["This webpage details the C++ client library for Google Cloud's Text-to-Speech API, allowing for the synthesis of natural-sounding speech using neural network models."],["The latest release candidate is version 2.37.0-rc, and the page lists various other past versions of the library, including version 2.12.0, which this particular documentation refers to."],["The library, while in GA, does not follow Semantic Versioning, and it automatically handles transient errors with retry and exponential backoff mechanisms, while offering options to override these defaults."],["The main class, `texttospeech_v1::TextToSpeechClient`, is the core of this C++ library, providing RPC functionalities, with additional classes available for testing, configuration and more."],["The page provides links to more information regarding error handling, how to override the default endpoint and authentication, and how environment variables can configure the library's behavior."]]],[]]
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