validate microphone settings when leaving the record options and when USDX is started:

- check if a user is assigned to multiple devices. If this is the case either do not leave the record options (if we already are there) or enter the record options (if USDX was started)
- the check is performed by calling TAudioInputProcessor.ValidateSettings()

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@2346 b956fd51-792f-4845-bead-9b4dfca2ff2c

4 files changed, 66 insertions, 8 deletions

diff --git a/src/base/UIni.pas b/src/base/UIni.pas
index ec229c54..a4c85a3b 100644
--- a/src/base/UIni.pas
+++ b/src/base/UIni.pas
@@ -632,7 +632,7 @@ begin
     if (DeviceIndex >= 0) then
     begin
       if not IniFile.ValueExists('Record', Format('DeviceName[%d]', [DeviceIndex])) then
-        break;
+        Continue;
 
       // resize list
       SetLength(InputDeviceConfig, Length(InputDeviceConfig)+1);
diff --git a/src/base/UMain.pas b/src/base/UMain.pas
index 53518d1e..8e938e52 100644
--- a/src/base/UMain.pas
+++ b/src/base/UMain.pas
@@ -78,6 +78,7 @@ uses
   UPathUtils,
   UPlaylist,
   UMusic,
+  URecord,
   UBeatTimer,
   UPlatform,
   USkins,
@@ -294,6 +295,10 @@ begin
     Log.BenchmarkEnd(0);
     Log.LogBenchmark('Loading Time', 0);
 
+    // check microphone settings, goto record options if they are corrupt
+    if (not AudioInputProcessor.ValidateSettings) then
+      Display.CurrentScreen^.FadeTo( @ScreenOptionsRecord );
+
     //------------------------------
     // Start Mainloop
     //------------------------------
diff --git a/src/base/URecord.pas b/src/base/URecord.pas
index 245d85a6..c183875c 100644
--- a/src/base/URecord.pas
+++ b/src/base/URecord.pas
@@ -133,6 +133,7 @@ type
       destructor Destroy; override;
 
       procedure UpdateInputDeviceConfig;
+      function ValidateSettings: boolean;
 
       // handle microphone input
       procedure HandleMicrophoneData(Buffer: PByteArray; Size: integer;
@@ -162,6 +163,8 @@ implementation
 
 uses
   ULog,
+  UGraphic,
+  ULanguage,
   UNote;
 
 var
@@ -594,6 +597,50 @@ begin
   end;
 end;
 
+function TAudioInputProcessor.ValidateSettings: boolean;
+const
+  MAX_PLAYER_COUNT = 6; // FIXME: there should be a global variable for this
+var
+  I, J: integer;
+  PlayerID: integer;
+  PlayerMap: array [0 .. MAX_PLAYER_COUNT] of boolean;
+  InputDevice: TAudioInputDevice;
+  InputDeviceCfg: PInputDeviceConfig;
+begin
+  // mark all players as unassigned
+  for I := 0 to High(PlayerMap) do
+    PlayerMap[I] := false;
+
+  // iterate over all active devices
+  for I := 0 to High(DeviceList) do
+  begin
+    InputDevice := DeviceList[I];
+    InputDeviceCfg := @Ini.InputDeviceConfig[InputDevice.CfgIndex];
+    // iterate over all channels of the current devices
+    for J := 0 to High(InputDeviceCfg.ChannelToPlayerMap) do
+    begin
+      // get player that was mapped to the current device channel
+      PlayerID := InputDeviceCfg.ChannelToPlayerMap[J];
+      if (PlayerID <> 0) then
+      begin
+        // check if player is already assigned to another device/channel
+        if (PlayerMap[PlayerID]) then
+        begin
+          ScreenPopupError.ShowPopup(
+              Format(Language.Translate('ERROR_PLAYER_DEVICE_ASSIGNMENT'),
+              [PlayerID]));
+          Result := false;
+          Exit;
+        end;
+
+        // mark player as assigned to a device
+        PlayerMap[PlayerID] := true;
+      end;
+    end;
+  end;
+  Result := true;
+end;
+
 {*
  * Handles captured microphone input data.
  * Params:
diff --git a/src/screens/UScreenOptionsRecord.pas b/src/screens/UScreenOptionsRecord.pas
index b7a40676..0f9cd49a 100644
--- a/src/screens/UScreenOptionsRecord.pas
+++ b/src/screens/UScreenOptionsRecord.pas
@@ -168,17 +168,23 @@ begin
       SDLK_BACKSPACE:
         begin
           // TODO: Show Save/Abort screen
-          Ini.Save;          
-          AudioPlayback.PlaySound(SoundLib.Back);
-          FadeTo(@ScreenOptions);
+          if (AudioInputProcessor.ValidateSettings()) then
+          begin
+            Ini.Save;
+            AudioPlayback.PlaySound(SoundLib.Back);
+            FadeTo(@ScreenOptions);
+          end;
         end;
       SDLK_RETURN:
         begin
           if (SelInteraction = ExitButtonIID) then
           begin
-            Ini.Save;
-            AudioPlayback.PlaySound(SoundLib.Back);
-            FadeTo(@ScreenOptions);
+            if (AudioInputProcessor.ValidateSettings()) then
+            begin
+              Ini.Save;
+              AudioPlayback.PlaySound(SoundLib.Back);
+              FadeTo(@ScreenOptions);
+            end;
           end;
         end;
       SDLK_DOWN:
@@ -434,7 +440,7 @@ begin
 
   SetLength(ChannelPeak, MaxChannelCount);
 
-  StartPreview();
+  UpdateInputDevice();
 end;
 
 procedure TScreenOptionsRecord.OnHide;