// create a callback for generating a block of samples
void audioCB(AudioIOData& io){
UserData& user = *(UserData *)io.user();
float ampL = user.ampL;
float ampR = user.ampR;
// loop through the number of samples in the block
for(int i=0; i<io.framesPerBuffer(); ++i){
float s = io.in(0,i); // get the line-in or microphone sample
io.out(0,i) = s * ampL; // set left output sample
io.out(1,i) = s * ampR; // set right output sample
}
// an alternative way to loop through the sample buffers
while(io()){
io.out(0) *= 0.5; // scale left output sample
io.out(1) *= 0.5; // scale right output sample
}
// if looping again, you must reset the frame iterator
io.frame(0);
while(io()){
io.out(0) *= 2; // scale left output sample
io.out(1) *= 2; // scale right output sample
}
}
// create a callback for generating a block of samples
void audioCB(AudioIOData& io){
UserData& user = *(UserData *)io.user();
float ampL = user.ampL;
float ampR = user.ampR;
// loop through the number of samples in the block
for(int i=0; i<io.framesPerBuffer(); ++i){
float s = io.in(0,i); // get the line-in or microphone sample
io.out(0,i) = s * ampL; // set left and right output channel samples
io.out(1,i) = s * ampR;
}
}
// Our main audio callback
void audioCB(AudioIOData& io){
UserData& user = *(UserData *)io.user();
float ampL = user.ampL;
float ampR = user.ampR;
// loop through the number of samples in the block
while(io()){
float s = io.in(0); // get the line-in or microphone sample
io.out(0) = s * ampL; // set left and right output channel samples
io.out(1) = s * ampR;
}
}
virtual void onSound(AudioIOData& io) {
static cuttlebone::Stats fps("onSound()");
static float currentNoiseAmplitude = 0;
fps(io.secondsPerBuffer());
float maxInputAmplitude = 0.0f;
// set the pose of our audio source
tap.pose(Pose(state->p[state->pokedVertex], Quatf()));
// "f" is the desired noise amplitude based on the state
float f =
(state->p[state->pokedVertex] - state->pokedVertexRest).mag() - 0.45;
if (f > 0.99) f = 0.99;
if (f < 0) f = 0;
while (io()) {
// find largest input amplitude of block
//
float in = fabs(io.in(0));
if (in > maxInputAmplitude) maxInputAmplitude = in;
// Make this 0.0001 so it will sound good
float ProportionOfErrorToEliminateOnThisAudioSample = 0.0001;
currentNoiseAmplitude += (f-currentNoiseAmplitude) *
ProportionOfErrorToEliminateOnThisAudioSample;
// output sample directly or write sample to output through our audio source
// io.out(0) = io.out(1) = pinkNoise() * f * state->audioGain;
tap.writeSample( pinkNoise() * currentNoiseAmplitude * state->audioGain );
}
// poke the blob if the largest amplitude is above some threshold
//
if (maxInputAmplitude > 0.707f) shouldPoke = true;
// set listener pose and render audio sources
listener()->pose(state->pose);
scene()->render(io);
}
