String SaveDevice(CfgAudioDevice dev)
{
return(dev.id + ","
+ "\"" + dev.name.Replace("\"", "\"\"") + "\","
+ dev.relVol + ","
+ dev.useLocal);
}
// Restore configuration settings into the active device list
public void RestoreAudioDevices(Dictionary <String, UIWin.AudioDevice> sysdevs)
{
// Go through the devices found in the configuration. We only
// restore settings for devices listed there; devices that are
// present in the system but not listed in the configuration
// are left with default settings. Every device is disabled
// by default except for the device designated in the Windows
// audio control panel as the "default" device, which is always
// enabled. So the result is that we enable all of the devices
// explicitly marked as enabled in the configuration, plus the
// Windows default device.
foreach (var v in devices)
{
// If this device exists in the system devices table, set up
// the system device with the saved settings. If it doesn't
// exist in the system devices table, ignore it. We leave
// the entry in the configuration list so that it will still
// take effect in future sessions if the device is installed
// again later.
if (sysdevs.ContainsKey(v.Key))
{
// get the config record and system device entry
CfgAudioDevice cfgdev = v.Value;
UIWin.AudioDevice sysdev = sysdevs[v.Key];
// Copy the config settings to the system device entry. Note
// that isActive is always set to true, since a device only
// appears in the config list at all if it's active.
sysdev.isActive = true;
sysdev.relLevel = cfgdev.relVol / 100.0f; // adjust % value to normalized scale
sysdev.useLocal = cfgdev.useLocal;
}
}
}
// Update a saved device with new settings. Returns true if any
// changes were made.
public bool UpdateDevice(String id, String name, bool isActive, float fRelVol, bool useLocal)
{
// convert the relative volume from a fraction to a percentage
int relVol = (int)Math.Round(fRelVol * 100.0f);
// assume no changes will be made
bool changed = false;
// If the device is active, update the existing table entry,
// or add a new entry if there isn't one already. If the
// device is inactive, delete any existing table entry, since
// we only store active devices.
if (isActive)
{
// The device is active. If it's already in the list,
// update the existing entry; otherwise add a new entry.
if (devices.ContainsKey(id))
{
// It's already in the table. If the existing entry
// has any differences, update it.
CfgAudioDevice dev = devices[id];
changed = dev.Update(id, name, relVol, useLocal);
}
else
{
// It's not in the table - add a new entry
CfgAudioDevice dev = new CfgAudioDevice(id, name, relVol, useLocal);
devices[id] = dev;
changed = true;
}
}
else
{
// The device is inactive. If there's a table entry,
// delete it.
if (devices.ContainsKey(id))
{
changed = true;
devices.Remove(id);
}
}
// return the change indication
return(changed);
}
void ParseDevice(String s)
{
Match m = Regex.Match(s, @"(?i)(.*),""((.|"""")*)"",(\d+),(true|false)");
if (m.Success)
{
CfgAudioDevice dev = new CfgAudioDevice(
m.Groups[1].Value,
m.Groups[2].Value,
int.Parse(m.Groups[4].Value),
bool.Parse(m.Groups[5].Value));
devices[dev.id] = dev;
}
else
{
throw new FormatException("Invalid 'device' value format");
}
}
