Overview

The Audio.Service.Infrastructure library provides a set of reusable components and services for audio-related functionalities, including:

• Audio file processing and conversion
• Streaming audio services
• Audio metadata extraction
• Integration with cloud storage for audio files
• Error handling and logging for audio operations

Key Components

AudioProcessor

A service class responsible for processing audio files. Methods include:

• ProcessAudioAsync(string filePath): Processes an audio file asynchronously.
• ConvertFormat(string inputPath, string outputPath, string format): Converts audio file formats.

AudioStreamer

Handles streaming of audio content. Key methods:

• StreamAudio(string url): Streams audio from a given URL.
• GetStreamMetadata(string streamId): Retrieves metadata for a stream.

AudioRepository

Repository pattern implementation for audio data persistence. Interfaces with databases or cloud storage.

Dependencies

• Microsoft.Extensions.DependencyInjection
• NAudio (for audio processing)
• Azure.Storage.Blobs (for cloud storage integration)
• Serilog (for logging)

Usage Example

// Register services in Startup.cs
services.AddScoped<IAudioProcessor, AudioProcessor>();
services.AddScoped<IAudioStreamer, AudioStreamer>();

// Inject and use in a controller
public class AudioController : ControllerBase
{
    private readonly IAudioProcessor _audioProcessor;

    public AudioController(IAudioProcessor audioProcessor)
    {
        _audioProcessor = audioProcessor;
    }

    [HttpPost("process")]
    public async Task ProcessAudio(IFormFile file)
    {
        // Process the uploaded audio file
        var result = await _audioProcessor.ProcessAudioAsync(file.FileName);
        return Ok(result);
    }
}

DDD Architecture Diagram

The following diagram illustrates the Domain-Driven Design (DDD) architecture for the Audio.Service.Infrastructure library, showing the relationships between the layers.

flowchart TD
    A[API Layer] --> B[Application Layer]
    B --> C[Domain Layer]
    C --> D[Infrastructure Layer]
    D --> E[Database]
    D --> F[External APIs]
    B --> G[Logging]
    C --> H[Domain Events]
    

Testing

Unit tests are provided using xUnit and Moq for mocking dependencies. Integration tests cover end-to-end scenarios.

Future Enhancements

• Support for additional audio formats
• Real-time audio processing
• AI-powered audio analysis

This is a preliminary outline. Please review and provide feedback for further development.