void render(BelaContext *context, void *userData)
{
for(unsigned int n = 0; n < context->audioFrames; n++) {
float sample = 0;
float out = 0;
// If triggered...
if(gReadPtr != -1)
sample += gSampleData.samples[gReadPtr++]; // ...read each sample...
if(gReadPtr >= gSampleData.sampleLen)
gReadPtr = -1;
out = lb0*sample+lb1*gLastX[0]+lb2*gLastX[1]-la1*gLastY[0]-la2*gLastY[1];
gLastX[1] = gLastX[0];
gLastX[0] = out;
gLastY[1] = gLastY[0];
gLastY[0] = out;
for(unsigned int channel = 0; channel < context->audioOutChannels; ++channel)
// ...and copy it to all the output channels
audioWrite(context, n, channel, out);
}
// Request that the lower-priority tasks run at next opportunity
Bela_scheduleAuxiliaryTask(gChangeCoeffTask);
Bela_scheduleAuxiliaryTask(gInputTask);
}
int Midi::writeTo(const char* port){
objAddrs[kMidiOutput].push_back(this);
outputPort = open(port, O_WRONLY, 0);
if(outputPort < 0){
return -1;
} else {
printf("Writing to Midi port %s\n", port);
Bela_scheduleAuxiliaryTask(midiOutputTask);
return 1;
}
}
int Midi::readFrom(const char* port){
objAddrs[kMidiInput].push_back(this);
inputPort = open(port, O_RDONLY | O_NONBLOCK | O_NOCTTY);
if(inputPort < 0){
return -1;
} else {
printf("Reading from Midi port %s\n", port);
Bela_scheduleAuxiliaryTask(midiInputTask);
return 1;
}
}
bool setup(BelaContext *context, void *userData)
{
// Check that we have the same number of inputs and outputs.
if(context->audioInChannels != context->audioOutChannels ||
context->analogInChannels != context-> analogOutChannels){
printf("Error: for this project, you need the same number of input and output channels.\n");
return false;
}
updatePll=Bela_createAuxiliaryTask(&updatePllFunction, 91, "update PLL");
for(int n=0; n<delayLength; n++){
delay[n]=0;
}
Bela_scheduleAuxiliaryTask(updatePll);
return true;
}
bool setup(BelaContext *context, void *userData)
{
// Check that we have the same number of inputs and outputs.
if(context->audioInChannels != context->audioOutChannels ||
context->analogInChannels != context-> analogOutChannels){
printf("Error: for this project, you need the same number of input and output channels.\n");
return false;
}
// Retrieve a parameter passed in from the initAudio() call
gSampleData = *(SampleData *)userData;
gReadPtr = -1;
if(initialise_trigger() == false)
return false;
// Start the lower-priority task. It will run forever in a loop
Bela_scheduleAuxiliaryTask(gTriggerSamplesTask);
return true;
}
void render(BelaContext *context, void *userData)
{
static float lfoPhase = 0;
float amplitude = lfoAmplitude * 4700; // range of variation around D. D has to be between [0 9999]
lfoPhase+=lfoRate * 2.f * (float)M_PI * context->audioFrames/context->audioSampleRate;
D=amplitude+amplitude * sinf(lfoPhase);
Bela_scheduleAuxiliaryTask(updatePll);
for(unsigned int n = 0; n < context->audioFrames; n++) {
float input = 0.0;
for(unsigned int ch = 0; ch < context->audioInChannels; ch++) {
input += audioRead(context, n, ch);
}
input = input/(float)context->audioInChannels;
delay[writePointer++] = input + delay[readPointer]*feedback;
float output = dry * input + wet * delay[readPointer++];
for(unsigned int ch = 0; ch < context->audioOutChannels; ch++)
audioWrite(context, n, ch, output);
if(writePointer>=delayLength)
writePointer-=delayLength;
if(readPointer>=delayLength)
readPointer-=delayLength;
}
}
