Add setting to limit the number of concurrent active recordings

common/src/main/java/ctbrec/Settings.java

@@ -80,6 +80,7 @@ public class Settings {
     public boolean requireAuthentication = false;
     public boolean chooseStreamQuality = false;
     public int maximumResolution = 0;
+    public int concurrentRecordings = 0;
     public byte[] key = null;
     public ProxyType proxyType = ProxyType.DIRECT;
     public String proxyHost;

common/src/main/java/ctbrec/recorder/LocalRecorder.java

@@ -191,6 +191,11 @@ public class LocalRecorder implements Recorder {
             return;
         }
 
+        if(!downloadSlotAvailable()) {
+            LOG.info("The number of downloads is maxed out, not starting recording for {}", model);
+            return;
+        }
+
         LOG.debug("Starting recording for model {}", model.getName());
         Download download = model.createDownload();
         LOG.debug("Downloading with {}", download.getClass().getSimpleName());
@@ -207,6 +212,11 @@ public class LocalRecorder implements Recorder {
         }.start();
     }
 
+    private boolean downloadSlotAvailable() {
+        int concurrentRecordings = Config.getInstance().getSettings().concurrentRecordings;
+        return concurrentRecordings > 0 && recordingProcesses.size() < concurrentRecordings;
+    }
+
     private void stopRecordingProcess(Model model)  {
         Download download = recordingProcesses.get(model);
         recordingProcesses.remove(model);