/**
* /// Performs the recognition for the given number of frames.
*
* /// @param nFrames the number of frames to recognize
* /// @return the current result or null if there is no Result (due to the lack of frames to recognize)
*/
override public Result recognize(int nFrames)
{
bool done = false;
Result result = null;
streamEnd = false;
for (int i = 0; i < nFrames && !done; i++)
{
done = recognize();
}
// generate a new temporary result if the current token is based on a final search state
// remark: the first check for not null is necessary in cases that the search space does not contain scoreable tokens.
if (activeList.getBestToken() != null)
{
// to make the current result as correct as possible we undo the last search graph expansion here
ActiveList fixedList = undoLastGrowStep();
// Now create the result using the fixed active-list.
if (!streamEnd)
{
result = new Results.Result(fixedList, resultList, currentFrameNumber, done);
}
}
if (_showTokenCount)
{
showTokenCount();
}
return(result);
}
/**
* /// Goes through the active list of tokens and expands each token, finding the set of successor tokens until all the
* /// successor tokens are emitting tokens.
*/
protected void growBranches()
{
growTimer.start();
float relativeBeamThreshold = activeList.getBeamThreshold();
Trace.WriteLine("Frame: " + currentFrameNumber
+ " thresh : " + relativeBeamThreshold + " bs "
+ activeList.getBestScore() + " tok "
+ activeList.getBestToken());
foreach (Token token in activeList.getTokens())
{
if (token.getScore() >= relativeBeamThreshold && allowExpansion(token))
{
collectSuccessorTokens(token);
}
}
growTimer.stop();
}
/**
* /// Dumps out debugging info for the given active list
*
* /// @param al the active list to dump
*/
private void dumpList(ActiveList al)
{
Trace.WriteLine("Size: " + al.size() + " Best token: " + al.getBestToken());
}