fixing minor item with media worker set as suggested by codacy

Unosquare.FFME.Common/Workers/MediaWorkerSet.cs

@@ -2,6 +2,7 @@
 {
  using Primitives;
  using System;
+ using System.Collections.Generic;
  using System.Threading.Tasks;
 
  /// <summary>
@@ -124,29 +125,11 @@ public void ResumePaused() => Resume(
  /// <param name="render">if set to <c>true</c> executes the opration on the rendering worker.</param>
  private void Pause(bool wait, bool read, bool decode, bool render)
  {
- if (IsDisposed) return;
-
- var tasks = new Task[(read ? 1 : 0) + (decode ? 1 : 0) + (render ? 1 : 0)];
- var index = 0;
- if (read)
- {
- tasks[index] = Reading.PauseAsync();
- index++;
- }
-
- if (decode)
- {
- tasks[index] = Decoding.PauseAsync();
- index++;
- }
-
- if (render)
- {
- tasks[index] = Rendering.PauseAsync();
- }
+ if (IsDisposed)
+ return;
 
- if (wait)
-   Task.WaitAll(tasks);
+ var tasks = CaptureTasks(read, decode, render, WorkerState.Paused);
+ if (wait) Task.WaitAll(tasks);
  }
 
  /// <summary>
@@ -160,27 +143,46 @@ private void Resume(bool wait, bool read, bool decode, bool render)
  {
  if (IsDisposed) return;
 
- var tasks = new Task[(read ? 1 : 0) + (decode ? 1 : 0) + (render ? 1 : 0)];
- var index = 0;
- if (read)
- {
- tasks[index] = Reading.ResumeAsync();
- index++;
- }
+ var tasks = CaptureTasks(read, decode, render, WorkerState.Running);
+ if (wait) Task.WaitAll(tasks);
+ }
 
- if (decode)
- {
- tasks[index] = Decoding.ResumeAsync();
- index++;
- }
+ /// <summary>
+ /// Captures the awaitable tasks for the given workers.
+ /// </summary>
+ /// <param name="read">The read worker.</param>
+ /// <param name="decode">The decode worker.</param>
+ /// <param name="render">The render worker.</param>
+ /// <param name="targetState">The target state.</param>
+ /// <returns>The awaitable tasks.</returns>
+ private Task<WorkerState>[] CaptureTasks(bool read, bool decode, bool render, WorkerState targetState)
+ {
+ var tasks = new List<Task<WorkerState>>(3);
+ var workers = new List<IMediaWorker>(3);
+
+ if (read) workers.Add(Reading);
+ if (decode) workers.Add(Decoding);
+ if (render) workers.Add(Rendering);
 
- if (render)
+ foreach (var worker in workers)
  {
- tasks[index] = Rendering.ResumeAsync();
+ switch (targetState)
+ {
+ case WorkerState.Paused:
+ tasks.Add(worker.PauseAsync());
+ break;
+ case WorkerState.Running:
+ tasks.Add(worker.ResumeAsync());
+ break;
+ case WorkerState.Stopped:
+ tasks.Add(worker.StopAsync());
+ break;
+ default:
+ throw new NotSupportedException($"{nameof(targetState)} '{targetState}' is not supported.");
+ }
  }
 
- if (wait)
- Task.WaitAll(tasks);
+ return tasks.ToArray();
  }
 
  /// <summary>