// ********************** PlugInTemplate Overrides *************************//
protected void processRequest(ChannelMap fwdData, PlugInChannelMap out) throws SAPIException {
if (fwdData.NumberOfChannels() == 0) return;
// Override member defaults with dynamic options:
int minDecimation = this.minDecimation, maxSamples = this.maxSamples;
boolean antiAlias = this.antiAlias;
java.util.Properties opts = getRequestOptions();
String temp;
if ((temp = opts.getProperty("minDecimation")) != null) minDecimation = Integer.parseInt(temp);
if ((temp = opts.getProperty("maxSamples")) != null) maxSamples = Integer.parseInt(temp);
if ((temp = opts.getProperty("antiAlias")) != null) antiAlias = "true".equals(temp);
// 2007/08/15 WHF maxSamples applies to all channels:
// 2007/08/15 WHF Changed their mind. Uncomment to re-enable.
/*if (fwdData.NumberOfChannels() == 0) return;
maxSamples /= fwdData.NumberOfChannels();
if (maxSamples < 1) maxSamples = 1; */
for (int index = 0; index < fwdData.NumberOfChannels(); ++index) {
Object data;
// Will add if necessary, otherwise just a lookup:
int outIndex = out.Add(fwdData.GetName(index));
// data = GetDataAsArray.get(fwdData, index);
data = fwdData.GetDataAsArray(index);
if (data == null) {
System.err.println("ResamplePlugIn: Unsupported datatype.");
continue;
}
int npts = Array.getLength(data);
if (npts <= maxSamples && minDecimation < 2) {
// length okay, just copy:
out.PutTimeRef(fwdData, index);
out.PutDataRef(outIndex, fwdData, index);
continue;
}
// Calculate the decimation factor for this set:
int ndeci = (int) Math.ceil(((double) npts) / maxSamples);
if (ndeci < minDecimation) ndeci = minDecimation;
double[] ddata = null;
if (antiAlias) {
if (fwdData.GetType(index) == ChannelMap.TYPE_FLOAT64) {
ddata = (double[]) data;
} else {
ddata = new double[npts];
for (int ii = 0; ii < npts; ++ii) ddata[ii] = Array.getDouble(data, ii);
}
double[] dataOut = new double[ddata.length];
Filter lowPass = new Filter(1.0 / ndeci);
lowPass.filter(ddata, dataOut);
data = dataOut;
}
Object result = decimate(data, ndeci);
out.PutTime(fwdData.GetTimeStart(index), fwdData.GetTimeDuration(index));
if (antiAlias) {
out.PutDataAsFloat64(outIndex, (double[]) result);
} else {
switch (fwdData.GetType(index)) {
case ChannelMap.TYPE_FLOAT32:
out.PutDataAsFloat32(outIndex, (float[]) result);
break;
case ChannelMap.TYPE_FLOAT64:
out.PutDataAsFloat64(outIndex, (double[]) result);
break;
case ChannelMap.TYPE_INT16:
out.PutDataAsInt16(outIndex, (short[]) result);
break;
case ChannelMap.TYPE_INT32:
out.PutDataAsInt32(outIndex, (int[]) result);
break;
case ChannelMap.TYPE_INT64:
out.PutDataAsInt64(outIndex, (long[]) result);
break;
case ChannelMap.TYPE_INT8:
out.PutDataAsInt8(outIndex, (byte[]) result);
break;
}
}
}
}
