使用.NET Core搭建分布式音频效果处理服务（二）创建基于FFMpeg的Web程序

 1 public static void Main(string[] args)
 2 {
 3     var config = new ConfigurationBuilder()
 4         .AddCommandLine(args)
 5         .Build();
 6 
 7     General.ConfigurationBuilder = config;
 8     General.LocalHostUrl = config["ASPNETCORE_URLS"];
 9     General.isOpenMiddleware = bool.Parse(config["OPEN_MIDDLEWARE"]);
10 
11     var host = new WebHostBuilder()
12         .UseEnvironment(config["ASPNETCORE_ENVIRONMENT"])
13         .UseUrls(config["ASPNETCORE_URLS"])
14         .UseConfiguration(config)
15         .UseKestrel()
16         .UseContentRoot(AppDomain.CurrentDomain.BaseDirectory)
17         .UseIISIntegration()
18         .UseStartup()
19         .Build();
20 
21     host.Run();
22 }

 1 public void DoProcessing(string param, ProcessType processType = ProcessType.Ffmpeg)
 2 {
 3     try
 4     {
 5         _process.StartInfo.FileName = GetEnvironmentalFfmpeg(GetProcessName(processType));
 6         _process.StartInfo.Arguments = param;
 7         _process.StartInfo.CreateNoWindow = true;
 8         _process.StartInfo.UseShellExecute = false;
 9         _process.StartInfo.RedirectStandardOutput = true;
10         _process.StartInfo.RedirectStandardInput = true;
11         _process.StartInfo.RedirectStandardError = true;
12 
13         _process.ErrorDataReceived += (sender, args) =>
14         {
15             if (sender is Process p && p.HasExited && p.ExitCode == 1)
16             {
17                 Console.WriteLine("have an error：" + args.Data);
18             }
19         };
20 
21         if (processType == ProcessType.Ffprobe)
22         {
23             _process.ErrorDataReceived += (sender, args) =>
24             {
25                 if (args.Data == "") return;
26                 FfprobeDataReceivedEventHandlerArgs?.Invoke(sender, args);
27             };
28         }
29 
30         _process.Start();
31         _process.BeginErrorReadLine();
32         _process.WaitForExit();
33     }
34     catch (Exception ex)
35     {
36         Console.WriteLine(ex);
37     }
38     finally
39     {
40         _process.Close();
41         _process.Dispose();
42     }
43 }

  1 /// 
  2 /// FFMPEG参数构造工厂
  3 /// 
  4 public class AudioParamFactory
  5 {
  6     private static string GetRandFileName()
  7     {
  8         return GetDictory() + "temp/" + GetRandomString(6, true, true, true, false, "") + ".mp3";
  9     }
 10 
 11     private static string GetDictory()
 12     {
 13         return AppDomain.CurrentDomain.BaseDirectory;
 14     }
 15 
 16     /// 
 17     /// 調整音量大小
 18     /// 
 19     ///