Simli Client for Flutter

The Simli Client Flutter package integrates with the Simli API to deliver real-time, low-latency streaming avatars. These avatars can be used in various applications, such as customer service bots, virtual assistants, and more. This package leverages WebRTC technology for video rendering, peer connections, and data channels, ensuring a seamless, high-performance experience.

Features

This package supports the following parameters and methods:

Parameters

SimliClient supports the following parameters during initialization:

Name	Type	Description
apiKey	String	The API key used for authenticating API requests.
faceId	String	Identifies the face to use for the session.
handleSilence	bool	Optional. Determines whether silence handling is enabled.

Visit the Simli website to obtain your API key and face ID. simli.com

Getting Started

Installing

Add the dependency to pubspec.yaml.

Get the latest version from the 'Installing' tab on pub.dev.
```
dependencies:
  simli_client: <latest-version>
```
Run the following command:
```
flutter pub get
```

Import the package:

import 'package:simli_client/simli_client.dart';

Implementation

Initialize the Simli client:

final SimliClient simliClient = SimliClient(apiKey: ApiKeys.simliApiKey, faceId: faceId);

Call the start function to establish a connection with the server and create a peer connection:
```
simliClient.start();
```

Use RTCVideoView in the widget tree to display the live avatar:

RTCVideoView(
  simliClient.videoRenderer!,
  mirror: false,
  placeholderBuilder: (context) => const Center(child: CircularProgressIndicator()),
);

Once the connection is established, you can send custom PCM16 audio with a 16,000 sample rate to the server. The avatar will start speaking using the provided audio. The audio data must be in Uint8List format:
```
simliClient.sendAudioData(data);
```

Additional Methods and Parameters

This package also includes additional methods and parameters to help you build a robust application:

Name	Type	Description
state	SimliState	Returns the current state of the client.
stateNotifier	ValueNotifier	Notifies about the SimliState.
onConnection	VoidCallback	Callback when the connection is established.
onFailed	Function(SimliError error)	Callback when the connection fails.
onDisconnected	VoidCallback	Callback when the connection is disconnected.
isSpeaking	bool	Returns `true` if the avatar is speaking.
isSpeakingNotifier	ValueNotifier	Notifies about the speaking status.
audioLevelNotifier	ValueNotifier	Notifies about the audio level of the avatar.