/// <summary>
/// Retrieve the Multimedia device ID. If the entry 'DefaultTokenId' is defined in the registry
/// under 'HKEY_CURRENT_USER\SOFTWARE\Microsoft\Speech\AudioOutput' then a multimedia device is looked
/// for with this token. Otherwise, picks the default WAVE_MAPPER is returned.
/// </summary>
internal static int DefaultDeviceOut()
{
int device = -1;
using (ObjectTokenCategory tokenCategory = ObjectTokenCategory.Create(@"HKEY_CURRENT_USER\SOFTWARE\Microsoft\Speech\AudioOutput"))
{
if (tokenCategory != null)
{
string deviceName;
if (tokenCategory.TryGetString(_defaultTokenIdValueName, out deviceName))
{
int pos = deviceName.IndexOf('\\');
if (pos > 0 && pos < deviceName.Length)
{
using (RegistryDataKey deviceKey = RegistryDataKey.Create(deviceName.Substring(pos + 1), Registry.LocalMachine))
{
if (deviceKey != null)
{
device = AudioDeviceOut.GetDevicedId(deviceKey.Name);
}
}
}
}
}
}
return(device);
}
internal static int DefaultDeviceOut()
{
int result = -1;
using (ObjectTokenCategory objectTokenCategory = ObjectTokenCategory.Create("HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Speech\\AudioOutput"))
{
if (objectTokenCategory == null)
{
return(result);
}
string value;
if (!objectTokenCategory.TryGetString("DefaultTokenId", out value))
{
return(result);
}
int num = value.IndexOf('\\');
if (num <= 0)
{
return(result);
}
if (num < value.Length)
{
using (RegistryDataKey registryDataKey = RegistryDataKey.Create(value.Substring(num + 1), Registry.LocalMachine))
{
if (registryDataKey != null)
{
return(AudioDeviceOut.GetDevicedId(registryDataKey.Name));
}
return(result);
}
}
return(result);
}
}
/// <summary>
/// Takes two tokens and compares them using version info.
/// Note only tokens that match on Vendor, ProductLine, Language get compared, the pfDidCompare flag indicates this
/// </summary>
private static int CompareTokenVersions(ObjectToken token1, ObjectToken token2, out bool pfDidCompare)
{
pfDidCompare = false;
RegistryDataKey attributes1 = null;
RegistryDataKey attributes2 = null;
attributes1 = token1.Attributes;
attributes2 = token2.Attributes;
// get vendor, version, language, product line for token 1
if (attributes1 != null)
{
string vendor1;
string productLine1;
string version1;
string language1;
attributes1.TryGetString("Vendor", out vendor1);
attributes1.TryGetString("ProductLine", out productLine1);
attributes1.TryGetString("Version", out version1);
attributes1.TryGetString("Language", out language1);
// get vendor, version, language, product line for token 2
if (attributes2 != null)
{
string vendor2;
string productLine2;
string version2;
string language2;
attributes2.TryGetString("Vendor", out vendor2);
attributes2.TryGetString("ProductLine", out productLine2);
attributes2.TryGetString("Version", out version2);
attributes2.TryGetString("Language", out language2);
if (((string.IsNullOrEmpty(vendor1) && string.IsNullOrEmpty(vendor2)) || (!string.IsNullOrEmpty(vendor1) && !string.IsNullOrEmpty(vendor2) && vendor1 == vendor2)) &&
((string.IsNullOrEmpty(productLine1) && string.IsNullOrEmpty(productLine2)) || (!string.IsNullOrEmpty(productLine1) && !string.IsNullOrEmpty(productLine2) && productLine1 == productLine2)) &&
((string.IsNullOrEmpty(language1) && string.IsNullOrEmpty(language2)) || (!string.IsNullOrEmpty(language1) && !string.IsNullOrEmpty(language2) && language1 == language2)))
{
pfDidCompare = true;
return(CompareVersions(version1, version2));
}
else
{
return(-1);
}
}
else
{
return(1);
}
}
else
{
return(-1);
}
}
private static int CompareTokenVersions(ObjectToken token1, ObjectToken token2, out bool pfDidCompare)
{
pfDidCompare = false;
RegistryDataKey registryDataKey = null;
RegistryDataKey registryDataKey2 = null;
registryDataKey = token1.Attributes;
registryDataKey2 = token2.Attributes;
if (registryDataKey != null)
{
string value;
registryDataKey.TryGetString("Vendor", out value);
string value2;
registryDataKey.TryGetString("ProductLine", out value2);
string value3;
registryDataKey.TryGetString("Version", out value3);
string value4;
registryDataKey.TryGetString("Language", out value4);
if (registryDataKey2 != null)
{
string value5;
registryDataKey2.TryGetString("Vendor", out value5);
string value6;
registryDataKey2.TryGetString("ProductLine", out value6);
string value7;
registryDataKey2.TryGetString("Version", out value7);
string value8;
registryDataKey2.TryGetString("Language", out value8);
if (((string.IsNullOrEmpty(value) && string.IsNullOrEmpty(value5)) || (!string.IsNullOrEmpty(value) && !string.IsNullOrEmpty(value5) && value == value5)) && ((string.IsNullOrEmpty(value2) && string.IsNullOrEmpty(value6)) || (!string.IsNullOrEmpty(value2) && !string.IsNullOrEmpty(value6) && value2 == value6)) && ((string.IsNullOrEmpty(value4) && string.IsNullOrEmpty(value8)) || (!string.IsNullOrEmpty(value4) && !string.IsNullOrEmpty(value8) && value4 == value8)))
{
pfDidCompare = true;
return(CompareVersions(value3, value7));
}
return(-1);
}
return(1);
}
return(-1);
}
protected override void Dispose(bool disposing)
{
try
{
if (disposing)
{
if (_disposeSapiObjectToken && _sapiObjectToken != null)
{
Marshal.ReleaseComObject(_sapiObjectToken);
_sapiObjectToken = null;
}
if (_attributes != null)
{
_attributes.Dispose();
_attributes = null;
}
}
}
finally
{
base.Dispose(disposing);
}
}
internal static ObjectTokenCategory Create(string sCategoryId)
{
RegistryDataKey key = RegistryDataKey.Open(sCategoryId, true);
return(new ObjectTokenCategory(sCategoryId, key));
}
protected ObjectTokenCategory(string keyId, RegistryDataKey key)
: base(keyId, key)
{
}
