iot/projects/IoT/IoTServices/SingalDemo/Controllers/HomeController.cs

using System;
using System.IO;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;

namespace SingalDemo.Controllers
{
    public class HomeController : Controller
    {
        private readonly IHostingEnvironment _env;
        private readonly IHubContext<PageHub> _pageHubContext;

        public HomeController(IHostingEnvironment env, IHubContext<PageHub> pageHubContext)
        {
            this._env = env;
            this._pageHubContext = pageHubContext;
        }

        public IActionResult Index()
        {
            return View();
        }

        public IActionResult Command(string command, string args, string player = "omx")
        {
            try
            {
                if (player == "web")
                {
                    this._pageHubContext.Clients.All.SendAsync("command", command, args);
                }
                else if (player == "omx")
                {
                    if (command == "play")
                    {
                        var file = Path.Combine(this._env.WebRootPath, "upload", $"{args}.mp4");
                        OmxPlayer.Play(file);
                    }
                    else if (command == "pause")
                    {
                        OmxPlayer.Pause();
                    }
                    else if (command == "stop")
                    {
                        OmxPlayer.Stop();
                    }
                    else if (command == "si")
                    {
                        OmxPlayer.SI();
                    }
                    else if (command == "sd")
                    {
                        OmxPlayer.SD();
                    }
                    else if (command == "vi")
                    {
                        OmxPlayer.VI();
                    }
                    else if (command == "vd")
                    {
                        OmxPlayer.VD();
                    }
                }
            }
            catch (Exception ex)
            {
                return Content(ex.Message);
            }
            return Content("");
        }
    }
}