A simple, unofficial AWS Polly client in dart. Supports generating a URL given an input text and voice identifier.

Last update: Aug 20, 2022

Related tags

Utilities flutter_aws_polly

Overview

Flutter AWS Polly Plugin

This plugin is a Flutter wrapper for AWS Polly which is a cloud service that converts text into lifelike speech.

Getting Started

Add this to your package's pubspec.yaml file:

dependencies:
  aws_polly: ^1.0.3

AWS Console

Here are the steps to generate a functional Pool ID in the AWS Console

You must have first have an account with AWS.
Go to the Amazon Cognito console.
Click on Manage Identity Pools and Create new identity pool.
Name the new identity pool and make sure to check Enable access to unauthenticated identities.
After creating the pool you'll be given your Identity pool ID, which will look something like us-east-1:xxxx-xxx-xxxxx
Now we need to give our new IAM policy the correct permissions, so go to the IAM Console.
Click on Roles, find your newly created Unauth_Role and click it.
Click on Attach policies and search for AmazonPollyReadOnlyAccess and add it to the role.

Usage

Then you just have to import the package with

import 'package:aws_polly/aws_polly.dart';

In order to generate a URL to play first create the client using your new poolId and region (USEast1 is the default).

final AwsPolly _awsPolly = AwsPolly.instance(
    poolId: 'us-east-1:xxxx-xxx-xxxxx',
    region: AWSRegionType.USEast1,
);

Then in order to generate a new URL, simply call on the getUrl() function:

final url = await _awsPolly.getUrl(
    voiceId: AWSPolyVoiceId.nicole,
    input: 'This is a sample text playing through Poly!',
);

Be sure to check the example project to see how to turn the .mp3 URL into a playable audio file.

Feedback

Please feel free to give me any feedback helping support this plugin !

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Comments

Unresolved reference: kotlinx

Good day sir,

I am trying to use the latest version of this Lib and finding errors around the use of Kotlinx. Can you advise on how to fix or maybe you have an update coming soon?

e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (14, 8): Unresolved reference: kotlinx
e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (15, 8): Unresolved reference: kotlinx
e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (16, 8): Unresolved reference: kotlinx
e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (17, 8): Unresolved reference: kotlinx
e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (33, 27): Unresolved reference: CoroutineScope
e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (33, 42): Unresolved reference: Dispatchers
e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (33, 59): Unresolved reference: Job
e: /Users/****/flutter/.pub-cache/hosted/pub.dartlang.org/aws_polly-2.1.1/android/src/main/kotlin/io/robrichardson/aws_polly/AwsPollyPlugin.kt: (83, 21): Unresolved reference: launch

Thanks for building this library, cannot wait to use it.

opened by RedMillLtd 1

Missing implementation error

I am trying to work with this package to integrate the AWS Polly service, but the error not letting me do.

Unhandled Exception: MissingPluginException(No implementation found for method initialize on channel aws_polly)

opened by Tarunvegi-dev 1
Request for Neural Engine options

Hi, Is it possible to add the Engine options? I would like to use the Neural instead of Standard. Besides, could you mind update the aws sdk to latest version?

opened by lookx2 1
Erro AmazonPollyPresigningClient

E/AndroidRuntime( 7816): java.lang.NoSuchFieldError: No instance field timeOffset of type I in class Lcom/amazonaws/services/polly/AmazonPollyPresigningClient; or its superclasses (declaration of 'com.amazonaws.services.polly.AmazonPollyPresigningClient' appears in /data/app/~~C3flFIb3IT4s1qC_Fp6s8A==/br.com.xxxxxxxxxx-WlgnrviUtb6n9P-G7SfaDQ==/base.apk) E/AndroidRuntime( 7816): at com.amazonaws.services.polly.AmazonPollyPresigningClient.getPresignedSynthesizeSpeechUrl(AmazonPollyPresigningClient.java:196) E/AndroidRuntime( 7816): at io.robrichardson.aws_polly.AwsPollyPlugin$onMethodCall$1$1.invokeSuspend(AwsPollyPlugin.kt:85) E/AndroidRuntime( 7816): at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) E/AndroidRuntime( 7816): at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106) E/AndroidRuntime( 7816): at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571) E/AndroidRuntime( 7816): at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750) E/AndroidRuntime( 7816): at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678) E/AndroidRuntime( 7816): at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) I/Process ( 7816): Sending signal. PID: 7816 SIG: 9

opened by egler321 0

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