/**
* @short Gets the audio signals for both channels (actually a copy)
*/
void Polybase::getAudio(float *audio[2], unsigned int nsamples, const MidiEventList &list){
if (nsamples>chunksize){
if (chunk){
delete chunk;
}
chunk=new float[nsamples];
}
unsigned int uptoSample=0;
unsigned int i;
foreach(MidiEvent ev, list){
if (ev.sampleOffset>uptoSample){
calculateChunk(&audio[0][uptoSample], ev.sampleOffset-uptoSample);
uptoSample=ev.sampleOffset;
}
switch (ev.type){
case MidiEvent::noteOn:
noteOn(ev.data[0], ev.data[1]);
break;
case MidiEvent::noteOff:
noteOff(ev.data[0], ev.data[1]);
break;
case MidiEvent::controller:
controller(ev.data[0], ev.data[1]);
break;
default:
break;
}
}
calculateChunk(&audio[0][uptoSample], nsamples-uptoSample);
for (i=0;i<nsamples;i++){
float s=audio[0][i]*volume;
if (s>1.0 || s<-1.0){
volume*=0.9;
if (s<0.0)
s=-1.0;
else
s=1.0;
WARNING("Clip %f! lowering volume to %f", s, volume);
emit sendController(0, volume*127);
}
audio[0][i]=s;
}
// no stereo by the moment
memcpy(audio[1],audio[0],sizeof(float)*nsamples);
}
void
DLargestCommonSubSequence::process() {
printString("A", a_);
printString("B", b_);
for(int i = 0; i < n_; ++i) {
if(id_ == i) {
std::cout << "Proc {" << i << "}\n" << std::flush;
distributedInit();
}
bsp_sync();
}
double tStart = bsp_time();
{
for(int a = 0; a < 2*chunkStride_-1; ++a) {
//if(0 == id_)
// std::cout << "Wavefront " << a << std::endl << std::flush;
// copy required elements from over_ buffer to L
int indexInOver = 0;
for(int i = 1; i < chunkStride_; ++i) {
for(int j = 0; j < chunkStride_; ++j) {
if( a == i + j &&
id_ == i % n_) {
memcpy(L_[getCPair(i-1, j)][chunkLength_-1],
over_[indexInOver].data(),
sizeof(int)*chunkLength_);
++indexInOver;
}
}
}
// calculate
for(int i = 0; i < chunkStride_; ++i) {
for(int j = 0; j < chunkStride_; ++j) {
if( a == i + j &&
id_ == i % n_) {
//std::cout << "calculateChunk[" << i << ", "
// << j << "] held by proc " << id_
// << std::endl << std::flush;
calculateChunk(i, j);
}
}
}
// communicate rows
indexInOver = 0;
for(int i = 0; i < chunkStride_; ++i) {
for(int j = 0; j < chunkStride_; ++j) {
if( a == i + j &&
id_ == i % n_ &&
chunkStride_-1 != i ) {
//std::cout << "dstPROC {" << (i+1)%n_ << "} with index ["
// << indexInOver << "], source - from PROC {"
// << id_ << "} with cell ["
// << i <<","<< j
// << "]" << std::endl << std::flush;
//std::cout << "src ptr " << L_[getCPair(i, j)][G-1]
// << std::endl << std::flush;
//std::cout << "dst ptr " << over_[indexInOver].data()
// << std::endl << std::flush;
bsp_put((i+1)%n_,
L_[getCPair(i, j)][chunkLength_-1],
over_[indexInOver].data(),
0, chunkLength_*sizeof(int));
++indexInOver;
}
}
}
bsp_sync();
}
}
double tEnd = bsp_time();
if(0 == id_)
std::cout << "Problem size [" << length_ << "]" << std::endl
<< "Time = " << tEnd - tStart << std::endl;
bsp_sync();
if(n_-1 == id_) {
std::cout << "No way we got a result " <<
getLElem(length_-1, length_-1) << std::endl;
}
}
