void DspLowpassFilter::processMessage(int inletIndex, PdMessage *message) {
switch (inletIndex) {
case 0: {
switch (message->getType(0)) {
case FLOAT: {
processDspWithIndex(blockIndexOfLastMessage, graph->getBlockIndex(message));
signalConstant = message->getFloat(0);
break;
}
case SYMBOL: {
if (message->isSymbol(0, "clear")) {
processDspWithIndex(blockIndexOfLastMessage, graph->getBlockIndex(message));
tap_0 = 0.0f;
}
break;
}
default: {
break;
}
}
break;
}
case 1: {
if (message->isFloat(0)) {
processDspWithIndex(blockIndexOfLastMessage, graph->getBlockIndex(message));
calculateFilterCoefficients(message->getFloat(0));
}
break;
}
default: {
break;
}
}
}
DspHighpassFilter::DspHighpassFilter(PdMessage *initMessage, PdGraph *graph) : DspObject(2, 1, 0, 1, graph) {
sampleRate = graph->getSampleRate();
tapIn = 0.0f;
tapOut = 0.0f;
filterInputBuffer = (float *) calloc(blockSizeInt+2, sizeof(float));
filterOutputBuffer = (float *) calloc(blockSizeInt+2, sizeof(float));
coefficients = (float *) calloc(5, sizeof(float));
// by default, the filter is initialised completely open
calculateFilterCoefficients(initMessage->isFloat(0) ? initMessage->getFloat(0) : 0.0f);
}
void DspHighpassFilter::processMessage(int inletIndex, PdMessage *message) {
switch (inletIndex) {
case 0: {
if (message->isSymbol(0) && strcmp(message->getSymbol(0), "clear") == 0) {
processDspToIndex(graph->getBlockIndex(message));
tapIn = 0.0f;
tapOut = 0.0f;
memset(filterInputBuffer, 0, (blockSizeInt+2) * sizeof(float));
memset(filterOutputBuffer, 0, (blockSizeInt+2) * sizeof(float));
}
break;
}
case 1: {
if (message->isFloat(0)) {
processDspToIndex(graph->getBlockIndex(message));
calculateFilterCoefficients(message->getFloat(0));
}
break;
}
default: {
break;
}
}
}
DspLowpassFilter::DspLowpassFilter(PdMessage *initMessage, PdGraph *graph) : DspObject(2, 1, 0, 1, graph) {
tap_0 = 0.0f;
coefficients = (float *) calloc(5, sizeof(float));
calculateFilterCoefficients(initMessage->isFloat(0) ? initMessage->getFloat(0) : graph->getSampleRate()/2.0f);
signalConstant = 0.0f;
}
DspVCF::DspVCF(PdMessage *initMessage, PdGraph *graph) : DspObject(3, 3, 0, 2, graph) {
sampleRate = graph->getSampleRate();
calculateFilterCoefficients(this->sampleRate/2.0f, 1.0f); // initialise the filter completely open
tap_0 = tap_1 = 0.0f;
}