private void ExtractDictationAlternates(ISpRecoResult recoResult, int maxAlternates)
{
if (recoResult != null && base.Grammar is DictationGrammar)
{
_alternates = new Collection <RecognizedPhrase>();
IntPtr[] array = new IntPtr[maxAlternates];
try
{
recoResult.GetAlternates(0, -1, maxAlternates, array, out maxAlternates);
}
catch (COMException)
{
maxAlternates = 0;
}
for (uint num = 0u; num < maxAlternates; num++)
{
ISpPhraseAlt spPhraseAlt = (ISpPhraseAlt)Marshal.GetObjectForIUnknown(array[num]);
try
{
IntPtr ppCoMemPhrase;
spPhraseAlt.GetSerializedPhrase(out ppCoMemPhrase);
try
{
RecognizedPhrase recognizedPhrase = new RecognizedPhrase();
SPSERIALIZEDPHRASE phraseHeader = RecognizedPhrase.GetPhraseHeader(ppCoMemPhrase, uint.MaxValue, _isSapi53Header);
bool hasIPAPronunciation = (_header.fAlphabet & 1) != 0;
recognizedPhrase.InitializeFromSerializedBuffer(this, phraseHeader, ppCoMemPhrase, (int)phraseHeader.ulSerializedSize, _isSapi53Header, hasIPAPronunciation);
_alternates.Add(recognizedPhrase);
}
finally
{
Marshal.FreeCoTaskMem(ppCoMemPhrase);
}
}
finally
{
Marshal.Release(array[num]);
}
}
}
}
private Collection <RecognizedPhrase> GetAlternates()
{
if (_alternates == null)
{
_alternates = ExtractAlternates((int)_header.ulNumPhraseAlts, _isSapi53Header);
if (_alternates.Count == 0 && _maxAlternates > 0)
{
RecognizedPhrase recognizedPhrase = new RecognizedPhrase();
GCHandle gCHandle = GCHandle.Alloc(_phraseBuffer, GCHandleType.Pinned);
try
{
recognizedPhrase.InitializeFromSerializedBuffer(this, _serializedPhrase, gCHandle.AddrOfPinnedObject(), _phraseBuffer.Length, _isSapi53Header, _hasIPAPronunciation);
}
finally
{
gCHandle.Free();
}
_alternates.Add(recognizedPhrase);
}
}
return(_alternates);
}
private Collection <RecognizedPhrase> ExtractAlternates(int numberOfAlternates, bool isSapi53Header)
{
Collection <RecognizedPhrase> collection = new Collection <RecognizedPhrase>();
if (numberOfAlternates > 0)
{
GCHandle gCHandle = GCHandle.Alloc(_sapiAlternatesBlob, GCHandleType.Pinned);
try
{
IntPtr value = gCHandle.AddrOfPinnedObject();
int num = Marshal.SizeOf(typeof(SPSERIALIZEDPHRASEALT));
int num2 = 0;
for (int i = 0; i < numberOfAlternates; i++)
{
IntPtr ptr = new IntPtr((long)value + num2);
SPSERIALIZEDPHRASEALT sPSERIALIZEDPHRASEALT = (SPSERIALIZEDPHRASEALT)Marshal.PtrToStructure(ptr, typeof(SPSERIALIZEDPHRASEALT));
num2 += num;
num2 = ((!isSapi53Header) ? (num2 + (int)sPSERIALIZEDPHRASEALT.cbAltExtra) : (num2 + (int)((sPSERIALIZEDPHRASEALT.cbAltExtra + 7) & -8)));
IntPtr phraseBuffer = new IntPtr((long)value + num2);
SPSERIALIZEDPHRASE phraseHeader = RecognizedPhrase.GetPhraseHeader(phraseBuffer, (uint)((int)_header.ulPhraseAltDataSize - num2), _isSapi53Header);
int ulSerializedSize = (int)phraseHeader.ulSerializedSize;
RecognizedPhrase recognizedPhrase = new RecognizedPhrase();
bool hasIPAPronunciation = (_header.fAlphabet & 2) != 0;
recognizedPhrase.InitializeFromSerializedBuffer(this, phraseHeader, phraseBuffer, ulSerializedSize, isSapi53Header, hasIPAPronunciation);
num2 = ((!isSapi53Header) ? (num2 + ulSerializedSize) : (num2 + ((ulSerializedSize + 7) & -8)));
collection.Add(recognizedPhrase);
}
return(collection);
}
finally
{
gCHandle.Free();
}
}
return(collection);
}
