using ErsatzTV.FFmpeg.Environment;

namespace ErsatzTV.FFmpeg.Option;

public class RealtimeInputOption : IPipelineStep
{
    public IList<EnvironmentVariable> EnvironmentVariables => Array.Empty<EnvironmentVariable>();

    // some builds of ffmpeg seem to hang when realtime input is requested with multithreading,
    // so we force a single thread here
    // public IList<string> GlobalOptions => new List<string> { "-threads", "1" };
    public IList<string> GlobalOptions => Array.Empty<string>();
    
    public IList<string> InputOptions => new List<string> { "-re" };
    public IList<string> FilterOptions => Array.Empty<string>();
    public IList<string> OutputOptions => Array.Empty<string>();
    public FrameState NextState(FrameState currentState) => currentState with { Realtime = true };
}