Robovoice/Robovoice.Core/ITtsEngine.cs

using System.Runtime.CompilerServices;

namespace Robovoice.Core;

public interface ITtsEngine : IAsyncDisposable
{
    string Name { get; }

    int SampleRate { get; }

    Task InitializeAsync(CancellationToken ct = default);

    IAsyncEnumerable<AudioChunk> SynthesizeAsync(
        string text,
        CancellationToken ct = default);
}

public static class TtsEngineExtensions
{
    public static ConfiguredCancelableAsyncEnumerable<AudioChunk> SynthesizeAsync(
        this ITtsEngine engine,
        string text,
        CancellationToken ct = default)
    {
        return engine.SynthesizeAsync(text, ct).ConfigureAwait(false).WithCancellation(ct);
    }
}