void processAudio(AudioBuffer &buffer)
{
// Reasonably assume we will not have more than 32 channels
float* ins[32];
float* outs[32];
int n = buffer.getChannels();
if ( (fDSP.getNumInputs() < 32) && (fDSP.getNumOutputs() < 32) ) {
// create the table of input channels
for(int ch=0; ch<fDSP.getNumInputs(); ++ch) {
ins[ch] = buffer.getSamples(ch%n);
}
// create the table of output channels
for(int ch=0; ch<fDSP.getNumOutputs(); ++ch) {
outs[ch] = buffer.getSamples(ch%n);
}
// read OWL parameters and updates corresponding Faust Widgets zones
fUI.update();
// Process the audio samples
fDSP.compute(buffer.getSize(), ins, outs);
}
}
int main(int argc, char *argv[]) {
yarp::os::Network yarp;
// see if user has supplied audio device
Property p;
if (argc>1) {
p.fromCommand(argc,argv);
}
// otherwise default device is "portaudio"
if (!p.check("device")) {
p.put("device","portaudio");
p.put("write",1);
p.put("delay",1);
}
// start the echo service running
Echo echo;
echo.open(p);
// process the keyboard
bool muted = false;
bool saving = false;
bool help = false;
ConstString fname = "audio_%06d.wav";
int ct = 0;
bool done = false;
while (!done) {
if (help) {
printf(" Press return to mute/unmute\n");
printf(" Type \"s\" to set start/stop saving audio in memory\n");
printf(" Type \"write filename.wav\" to write saved audio to a file\n");
printf(" Type \"buf NUMBER\" to set buffering delay (default is 0)\n");
printf(" Type \"write\" or \"w\" to write saved audio with same/default name\n");
printf(" Type \"q\" to quit\n");
printf(" Type \"help\" to see this list again\n");
help = false;
} else {
printf("Type \"help\" for usage\n");
}
ConstString keys = Network::readString();
Bottle b(keys);
ConstString cmd = b.get(0).asString();
if (b.size()==0) {
muted = !muted;
echo.mute(muted);
printf("%s\n", muted?"Muted":"Audible again");
} else if (cmd=="help") {
help = true;
} else if (cmd=="s") {
saving = !saving;
echo.save(saving);
printf("%s\n", saving?"Saving":"Stopped saving");
if (saving) {
printf(" Type \"s\" again to stop saving\n");
}
} else if (cmd=="write"||cmd=="w") {
if (b.size()==2) {
fname = b.get(1).asString();
}
char buf[2560];
sprintf(buf,fname.c_str(),ct);
echo.saveFile(buf);
ct++;
} else if (cmd=="q"||cmd=="quit") {
done = true;
} else if (cmd=="buf"||cmd=="b") {
padding = b.get(1).asInt();
printf("Buffering at %d\n", padding);
}
}
echo.close();
return 0;
}
int main(int argc, char *argv[]) {
yarp::os::Network yarp;
//pre-setup some memory mapping stuff right away
printf("\n\nInitializing memory mapped files in the /tmp directory to hold audio data\n\n");
//build a vector of short zeros
short *initialAudioArray;
initialAudioArray = (short *)malloc(kMappedFileSize_samples*sizeof(short));
for (int i=0;i<kMappedFileSize_samples;i++){
initialAudioArray[i]=(short)0;
}
//write the zeros to a file to initialize it
FILE *fid=fopen("/tmp/AudioDataDump.dat","w");
fwrite(initialAudioArray,sizeof(short),kMappedFileSize_samples,fid);
fclose(fid);
//memory map the file
//these were declared globally so that we can get to them from the callback
int mappedFileID=open("/tmp/AudioDataDump.dat",O_RDWR);
mappedAudioData=(short *)mmap(0, kMappedFileSize_bytes, PROT_READ | PROT_WRITE, MAP_SHARED , mappedFileID, 0);
close(mappedFileID); //the double colon forces to call the close() from outside of this namespace (because it's obscured by the method close()
//make a "file" that holds a single int to keep index of frames written and initialize with a zero
FILE *fid2=fopen("/tmp/lastFrameIndex.dat","w");
int dummyInt=0;
fwrite(&dummyInt,sizeof(int),1,fid2);
fclose(fid2);
//make a "file" that holds a single int to keep index of the last sample written and initialize with a zero
FILE *fid3=fopen("/tmp/lastSampleIndex.dat","w");
int dummyInt2=0;
fwrite(&dummyInt2,sizeof(int),1,fid3);
fclose(fid3);
//memory map the index file
int lastFrameFileID = open("/tmp/lastFrameIndex.dat",O_RDWR);
lastFrameIndex=(int *)mmap(0, sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED , lastFrameFileID, 0);
close(lastFrameFileID);
//memory map the last sample index file
int lastSampleFileID = open("/tmp/lastSampleIndex.dat",O_RDWR);
lastSampleIndex=(int *)mmap(0, sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED , lastSampleFileID, 0);
close(lastSampleFileID);
//****now you are ready to write frames into this memory****//
// see if user has supplied audio device
Property p;
if (argc>1) {
p.fromCommand(argc,argv);
}
// otherwise default device is "portaudio"
if (!p.check("device")) {
p.put("device","portaudio");
p.put("write",1);
p.put("delay",1);
}
// start the echo service running
Echo echo;
echo.open(p);
// process the keyboard
bool muted = false;
bool saving = false;
bool help = false;
ConstString fname = "audio_%06d.wav";
int ct = 0;
bool done = false;
while (!done) {
if (help) {
printf(" Press return to mute/unmute\n");
printf(" Type \"s\" to set start/stop saving audio in memory\n");
printf(" Type \"write filename.wav\" to write saved audio to a file\n");
printf(" Type \"buf NUMBER\" to set buffering delay (default is 0)\n");
printf(" Type \"write\" or \"w\" to write saved audio with same/default name\n");
printf(" Type \"q\" to quit\n");
printf(" Type \"help\" to see this list again\n");
help = false;
} else {
printf("Type \"help\" for usage\n");
}
ConstString keys = Network::readString();
Bottle b(keys);
ConstString cmd = b.get(0).asString();
if (b.size()==0) {
muted = !muted;
echo.mute(muted);
printf("%s\n", muted?"Muted":"Audible again");
} else if (cmd=="help") {
help = true;
} else if (cmd=="s") {
saving = !saving;
echo.save(saving);
printf("%s\n", saving?"Saving":"Stopped saving");
if (saving) {
printf(" Type \"s\" again to stop saving\n");
}
} else if (cmd=="write"||cmd=="w") {
if (b.size()==2) {
fname = b.get(1).asString();
}
char buf[2560];
sprintf(buf,fname.c_str(),ct);
echo.saveFile(buf);
ct++;
} else if (cmd=="q"||cmd=="quit") {
done = true;
} else if (cmd=="buf"||cmd=="b") {
padding = b.get(1).asInt();
printf("Buffering at %d\n", padding);
}
}
echo.close();
return 0;
}
EchoPatch() : fUI(patches.getCurrentPatchProcessor())
{
fDSP.init(int(getSampleRate())); // Init Faust code with the OWL sampling rate
fDSP.buildUserInterface(&fUI); // Maps owl parameters and faust widgets
}
