using ErsatzTV.FFmpeg.Environment; namespace ErsatzTV.FFmpeg.Filter; public class VideoFilter : IPipelineStep { private readonly IEnumerable _filterSteps; public VideoFilter(IEnumerable filterSteps) => _filterSteps = filterSteps; public EnvironmentVariable[] EnvironmentVariables => Array.Empty(); public string[] GlobalOptions => Array.Empty(); public string[] InputOptions(InputFile inputFile) => Array.Empty(); public string[] FilterOptions => Arguments(); public string[] OutputOptions => Array.Empty(); public FrameState NextState(FrameState currentState) => currentState; private string[] Arguments() => [ "-vf", string.Join(",", _filterSteps.Map(fs => fs.Filter)) ]; }