/* create a new multisampling object based on a list of samples */
public static MultiSampleRec NewMultiSample(
SampleSelectorRec Selector,
WaveSampDictRec Dictionary)
{
MultiSampleRec MultiSample = new MultiSampleRec();
int Count = GetSampleSelectorListLength(Selector);
MultiSample.SampleInfoArray = new OneSampleRec[Count];
/* fill in the entries */
int Index = 0;
for (int i = 0; i < Count; i += 1)
{
OneSampleRec Entry = MultiSample.SampleInfoArray[Index] = new OneSampleRec();
/* fill in interval for which this sample is valid */
Entry.MinFrequency = GetSampleListEntryLowFreqBound(Selector, i);
Entry.MaxFrequency = GetSampleListEntryHighFreqBound(Selector, i);
/* get name of sample for this interval */
string SampleName = GetSampleListEntryName(Selector, i);
/* see if we can get info about this one */
if (!WaveSampDictGetSampleInfo(
Dictionary,
SampleName,
out Entry.SampleDataReference,
out Entry.NumFrames,
out Entry.NumChannels,
out Entry.Loop1Start,
out Entry.Loop1End,
out Entry.Loop2Start,
out Entry.Loop2End,
out Entry.Loop3Start,
out Entry.Loop3End,
out Entry.Origin,
out Entry.NaturalFreq,
out Entry.SamplingRate,
out Entry.Loop1Bidirectional,
out Entry.Loop2Bidirectional,
out Entry.Loop3Bidirectional))
{
/* couldn't find that wave table, so just skip it */
continue;
}
/* this entry is valid */
Index += 1;
}
if (Index < Count)
{
Array.Resize(ref MultiSample.SampleInfoArray, Index);
}
return(MultiSample);
}
/* create a new sample selector record */
public static SampleSelectorRec NewSampleSelectorList(double LowestBound)
{
SampleSelectorRec SampList = new SampleSelectorRec();
SampList.List = new OneSampRec[0];
/* set the starting threshhold */
SampList.CurrentLowerBound = LowestBound;
return(SampList);
}
/* 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);
}
/* check wave table selector */
public static SynthErrorCodes CheckWaveTableSelectorForUnreferencedSamples(
SampleSelectorRec WaveTableSelector,
CheckUnrefParamRec Param)
{
int Limit = GetSampleSelectorListLength(WaveTableSelector);
for (int Scan = 0; Scan < Limit; Scan += 1)
{
string Name = GetSampleListEntryName(WaveTableSelector, Scan);
if (!WaveSampDictDoesWaveTableExist(
Param.Dictionary,
Name))
{
Param.ErrorInfo.ErrorEx = SynthErrorSubCodes.eSynthErrorExUndefinedWaveTable;
Param.ErrorInfo.WaveTableName = Name;
return(SynthErrorCodes.eSynthErrorEx);
}
}
return(SynthErrorCodes.eSynthDone);
}
/* add a new sample thing, with it's upper bound. the Name heap block is deleted */
public static void AppendSampleSelector(
SampleSelectorRec SampList,
double UpperBound,
string Name)
{
/* constrain interval */
if (UpperBound < SampList.CurrentLowerBound)
{
UpperBound = SampList.CurrentLowerBound;
}
OneSampRec NewRec = new OneSampRec();
NewRec.LowerBound = SampList.CurrentLowerBound;
NewRec.UpperBound = UpperBound;
NewRec.Name = Name;
/* update our idea of lower bound */
SampList.CurrentLowerBound = UpperBound;
Array.Resize(ref SampList.List, SampList.List.Length + 1);
SampList.List[SampList.List.Length - 1] = NewRec;
}
/* return the low bound frequency of a particular list entry */
public static double GetSampleListEntryLowFreqBound(
SampleSelectorRec SampList,
int Index)
{
return(SampList.List[Index].LowerBound);
}
/* get the number of sample ranges specified in the list */
public static int GetSampleSelectorListLength(SampleSelectorRec SampList)
{
return(SampList.List.Length);
}
/* get the actual ptr to the heap block containing non-null-terminated sample name */
public static string GetSampleListEntryName(
SampleSelectorRec SampList,
int Index)
{
return(SampList.List[Index].Name);
}
