private void ResetFamiStudioTempo()
{
if (!famitrackerTempo)
{
var newGroove = song.GetPatternGroove(playLocation.PatternIndex);
var newGroovePadMode = song.GetPatternGroovePaddingMode(playLocation.PatternIndex);
FamiStudioTempoUtils.ValidateGroove(newGroove);
grooveIterator = new GrooveIterator(newGroove, newGroovePadMode);
tempoEnvelope = FamiStudioTempoUtils.GetTempoEnvelope(newGroove, newGroovePadMode, song.Project.PalMode);
tempoEnvelopeCounter = tempoEnvelope[0];
tempoEnvelopeIndex = 0;
}
}
public static int ComputeNumberOfFrameForGroove(int length, int[] groove, int groovePadMode)
{
// Look in the cache first.
var key = new CacheGrooveLengthKey()
{
groove = groove, groovePadMode = groovePadMode
};
if (cachedGrooveLengths.TryGetValue(key, out var grooveLengthArray))
{
return(grooveLengthArray[length]);
}
grooveLengthArray = new int[Pattern.MaxLength];
// Add to cache if not found.
var idx = 0;
var grooveIterator = new GrooveIterator(groove, groovePadMode);
// This is really not optimal, not need to run the full iterator until the very end.
for (int i = 0; i < grooveLengthArray.Length; i++)
{
if (grooveIterator.IsPadFrame)
{
grooveIterator.Advance();
}
grooveLengthArray[idx++] = grooveIterator.FrameIndex;
grooveIterator.Advance();
}
cachedGrooveLengths.Add(key, grooveLengthArray);
return(grooveLengthArray[length]);
}