/* obtain a data reference & info for a sample. returns False if there is no */
/* sample corresponding to the supplied frequency. */
public static bool GetMultiWaveTableReference(
MultiWaveTableRec MultiWaveTable,
double FrequencyHertz,
out float[][] TwoDimensionalVecOut,
out int NumFramesOut,
out int NumTablesOut)
{
TwoDimensionalVecOut = null;
NumFramesOut = 0;
NumTablesOut = 0;
for (int i = 0; i < MultiWaveTable.WaveTableInfoArray.Length; i += 1)
{
OneWaveTableRec Entry = MultiWaveTable.WaveTableInfoArray[i];
if ((FrequencyHertz >= Entry.MinFrequency) && (FrequencyHertz < Entry.MaxFrequency))
{
TwoDimensionalVecOut = Entry.WaveTableMatrix;
NumFramesOut = Entry.FramesPerTable;
NumTablesOut = Entry.NumberOfTables;
return(Entry.NumberOfTables > 0);
}
}
return(false);
}
/* create a new multisampling object based on a list of wave tables */
public static MultiWaveTableRec NewMultiWaveTable(
SampleSelectorRec Selector,
WaveSampDictRec Dictionary)
{
MultiWaveTableRec MultiWaveTable = new MultiWaveTableRec();
int Count = GetSampleSelectorListLength(Selector);
MultiWaveTable.WaveTableInfoArray = new OneWaveTableRec[Count];
int Index = 0;
for (int i = 0; i < Count; i += 1)
{
OneWaveTableRec Entry = MultiWaveTable.WaveTableInfoArray[Index] = new OneWaveTableRec();
/* get interval for which this one is valid */
Entry.MinFrequency = GetSampleListEntryLowFreqBound(Selector, i);
Entry.MaxFrequency = GetSampleListEntryHighFreqBound(Selector, i);
/* get name of wave table for this interval */
string WaveTableName = GetSampleListEntryName(Selector, i);
/* see if we can get info about this one */
if (!WaveSampDictGetWaveTableInfo(
Dictionary,
WaveTableName,
out Entry.WaveTableMatrix,
out Entry.FramesPerTable,
out Entry.NumberOfTables))
{
/* couldn't find that wave table, so just skip it */
continue;
}
/* this entry is valid */
Index += 1;
}
if (Index < Count)
{
Array.Resize(ref MultiWaveTable.WaveTableInfoArray, Index);
}
return(MultiWaveTable);
}
