using System.Diagnostics;
using System.IO;

namespace ytLive.Services;

/// <summary>
/// TASK 21: seam around the media decoder's subprocess (ffmpeg <c>rawvideo</c>).
/// Exposes the raw binary stdout (frames) and exit control, so
/// <see cref="MediaVideoSource"/> never touches <c>System.Diagnostics.Process</c>
/// directly and tests can fake the whole decode. Mirrors the encoder's
/// <c>IEncoderProcess</c> but with a binary <see cref="StandardOutput"/>.
/// </summary>
public interface IDecodeProcess : IDisposable
{
    void Start(ProcessStartInfo startInfo);

    /// <summary>Raw binary stdout — the <c>rawvideo</c> BGRA frame bytes.</summary>
    Stream StandardOutput { get; }

    bool HasExited { get; }
    int ExitCode { get; }
    void Kill();
    Task WaitForExitAsync(CancellationToken cancellationToken = default);
}