PollyDemo.java - AWS Code Sample


PollyDemo demonstrates how to convert text into speech.

/** * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. * * This file is licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. A copy of * the License is located at * * http://aws.amazon.com/apache2.0/ * * This file is distributed on an "AS IS" BASIS, 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. */ package com.example.polly; import javazoom.jl.decoder.JavaLayerException; import software.amazon.awssdk.core.ResponseInputStream; import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.polly.PollyClient; import software.amazon.awssdk.services.polly.model.DescribeVoicesRequest; import software.amazon.awssdk.services.polly.model.Voice; import software.amazon.awssdk.services.polly.model.DescribeVoicesResponse; import software.amazon.awssdk.services.polly.model.OutputFormat; import software.amazon.awssdk.services.polly.model.PollyException; import software.amazon.awssdk.services.polly.model.SynthesizeSpeechRequest; import software.amazon.awssdk.services.polly.model.SynthesizeSpeechResponse; import java.io.IOException; import java.io.InputStream; import javazoom.jl.player.advanced.AdvancedPlayer; import javazoom.jl.player.advanced.PlaybackEvent; import javazoom.jl.player.advanced.PlaybackListener; public class PollyDemo { private static final String SAMPLE = "Congratulations. You have successfully built this working demo "+ " of Amazon Polly in the AWS SDK for Java version 2. Have fun building voice-enabled apps with Amazon Polly (that's me!), and always "+ " look at the AWS website for tips and tricks on using Amazon Polly and other great services from AWS."; public static void main(String args[]) { PollyClient polly = PollyClient.builder() .region(Region.US_WEST_2) .build(); talkPolly(polly); } public static void talkPolly(PollyClient polly) { try { DescribeVoicesRequest describeVoiceRequest = DescribeVoicesRequest.builder() .engine("standard") .build(); DescribeVoicesResponse describeVoicesResult = polly.describeVoices(describeVoiceRequest); Voice voice = describeVoicesResult.voices().get(26); InputStream stream = synthesize(polly, SAMPLE, voice, OutputFormat.MP3); //create an MP3 player AdvancedPlayer player = new AdvancedPlayer(stream, javazoom.jl.player.FactoryRegistry.systemRegistry().createAudioDevice()); player.setPlayBackListener(new PlaybackListener() { public void playbackStarted(PlaybackEvent evt) { System.out.println("Playback started"); System.out.println(SAMPLE); } public void playbackFinished(PlaybackEvent evt) { System.out.println("Playback finished"); } }); // play it! player.play(); } catch (PollyException | JavaLayerException | IOException e) { System.err.println(e.getMessage()); System.exit(1); } } public static InputStream synthesize(PollyClient polly, String text, Voice voice, OutputFormat format) throws IOException { SynthesizeSpeechRequest synthReq = SynthesizeSpeechRequest.builder() .text(text) .voiceId(voice.id()) .outputFormat(format) .build(); ResponseInputStream<SynthesizeSpeechResponse> synthRes = polly.synthesizeSpeech(synthReq); return synthRes; } }

Sample Details

Service: Amazon Polly

Last tested: 5/7/2020

Author: scmacdon AWS

Type: full-example