- device input latency is now configurable via config.ini

- latency[i] determines the latency for device i in milliseconds or -1 for autodetection (default)
- this is necessary as mic capturing with portaudio (on linux) gets stuck if latency is too low. Either because portaudio's latency autodetection does not work or because the mic capture callback takes too long before it returns. In both cases the user should set the latency to a value of 100 (ms).
- better input device test, it should not remove working devices anymore.

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@2313 b956fd51-792f-4845-bead-9b4dfca2ff2c

1 files changed, 7 insertions, 0 deletions

diff --git a/src/base/UIni.pas b/src/base/UIni.pas
index 3ed3f3d5..ec229c54 100644
--- a/src/base/UIni.pas
+++ b/src/base/UIni.pas
@@ -63,9 +63,13 @@ type
   TInputDeviceConfig = record
     Name:               string;
     Input:              integer;
+    Latency:            integer; //**< latency in ms, or LATENCY_AUTODETECT for default
     ChannelToPlayerMap: array of integer;
   end;
 
+const
+  LATENCY_AUTODETECT = -1;
+
 type
 
 //Options
@@ -640,6 +644,7 @@ begin
       DeviceCfg := @InputDeviceConfig[High(InputDeviceConfig)];
       DeviceCfg.Name := IniFile.ReadString('Record', Format('DeviceName[%d]', [DeviceIndex]), '');
       DeviceCfg.Input := IniFile.ReadInteger('Record', Format('Input[%d]', [DeviceIndex]), 0);
+      DeviceCfg.Latency := IniFile.ReadInteger('Record', Format('Latency[%d]', [DeviceIndex]), LATENCY_AUTODETECT);
 
       // find the largest channel-number of the current device in the ini-file
       ChannelCount := GetMaxKeyIndex(RecordKeys, 'Channel', Format('[%d]', [DeviceIndex]));
@@ -678,6 +683,8 @@ begin
                         InputDeviceConfig[DeviceIndex].Name);
     IniFile.WriteInteger('Record', Format('Input[%d]', [DeviceIndex+1]),
                         InputDeviceConfig[DeviceIndex].Input);
+    IniFile.WriteInteger('Record', Format('Latency[%d]', [DeviceIndex+1]),
+                        InputDeviceConfig[DeviceIndex].Latency);
 
     // Channel-to-Player Mapping
     for ChannelIndex := 0 to High(InputDeviceConfig[DeviceIndex].ChannelToPlayerMap) do