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Copy pathdsp.cpp
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190 lines (181 loc) · 4.88 KB
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#include "dsp.h"
#include "logger.h"
// encoders
#include "encoder.h"
// outputs
#include "output.h"
#include <cassert>
#include <QSettings>
#include <QMutexLocker>
DSP::DSP()
: _active(false),
_numChannels(0)
{
connect(this, SIGNAL(message(QString)), Logger::getInstance(), SLOT(message(QString)));
connect(this, SIGNAL(warn(QString)), Logger::getInstance(), SLOT(warn(QString)));
connect(this, SIGNAL(error(QString)), Logger::getInstance(), SLOT(error(QString)));
_inbuffer.init(DSP_RINGSIZE);
_readbuffer = 0;
_writebuffer = 0;
allocBuffers();
}
DSP::~DSP()
{
disconnect(this, SIGNAL(message(QString)), Logger::getInstance(), SLOT(message(QString)));
disconnect(this, SIGNAL(warn(QString)), Logger::getInstance(), SLOT(warn(QString)));
disconnect(this, SIGNAL(error(QString)), Logger::getInstance(), SLOT(error(QString)));
disable();
{
ProcessorChain::iterator it = _processorChain.begin();
while (it != _processorChain.end()) {
delete *it;
it++;
}
_processorChain.clear();
}
{
OutputList::iterator it = _outputList.begin();
while (it != _outputList.end()) {
delete *it;
it++;
}
_outputList.clear();
}
delete[] _readbuffer;
delete[] _writebuffer;
}
void DSP::reset()
{
disable();
{
ProcessorChain::iterator it = _processorChain.begin();
while (it != _processorChain.end()) {
delete *it;
it++;
}
_processorChain.clear();
}
{
OutputList::iterator it = _outputList.begin();
while (it != _outputList.end()) {
delete *it;
it++;
}
_outputList.clear();
}
}
void DSP::allocBuffers()
{
if (_readbuffer) {
delete[] _readbuffer;
_readbuffer = 0;
}
if (_writebuffer) {
delete[] _writebuffer;
_writebuffer = 0;
}
_readbuffer = new sample_t[DSP_RINGSIZE];
_writebuffer = new sample_t[DSP_RINGSIZE];
assert(_readbuffer && _writebuffer);
}
void DSP::addProcessor(Processor* p)
{
QMutexLocker ml(&_processorLock);
_processorChain.push_back(p);
}
void DSP::removeProcessor(Processor* p)
{
QMutexLocker ml(&_processorLock);
_processorChain.remove(p);
delete p;
}
void DSP::addOutput(Output* o)
{
QMutexLocker ml(&_outputLock);
_outputList.push_back(o);
}
void DSP::removeOutput(Output* o)
{
QMutexLocker ml(&_outputLock);
_outputList.remove(o);
delete o;
}
void DSP::run()
{
_active = true;
while (_active) {
_work.lock();
while (_inbuffer.getFillLevel() < DSP_BLOCKSIZE) {
_workCondition.wait(&_work);
if (!_active) {
_work.unlock();
return;
}
}
// data available -> take a block & process it
uint32_t read = _inbuffer.read(_readbuffer, DSP_RINGSIZE);
assert(read >= DSP_BLOCKSIZE);
_work.unlock();
// process signal chain
{
QMutexLocker ml(&_processorLock);
ProcessorChain::iterator it = _processorChain.begin();
while (it != _processorChain.end()) {
(*it)->process(_readbuffer, _writebuffer, read);
if ((*it)->getType() == Processor::METER) {
MeterProcessor* p = static_cast<MeterProcessor*>(*it);
emit newPeaks(p->getValues());
}
else {
// now reuse/swap buffers for next processor
sample_t* tmp = _readbuffer;
_readbuffer = _writebuffer;
_writebuffer = tmp;
}
it++;
}
}
// send buffer to output
{
// outputs can be modified on runtime
QMutexLocker ml(&_outputLock);
OutputList::iterator it = _outputList.begin();
while (it != _outputList.end()) {
(*it)->feed(_readbuffer, read);
it++;
}
}
//FileLogger::instance().log(_readbuffer, read, _numChannels);
}
}
void DSP::disable()
{
if (_active) {
_active = false;
_workCondition.wakeAll();
wait();
OutputList::iterator it = _outputList.begin();
while (it != _outputList.end()) {
(*it)->disable();
it++;
}
}
}
void DSP::feed(const sample_t* buffer, uint32_t samples)
{
if (!_active)
return;
// FIXME waittime should be based on the current samplerate
if (_work.tryLock(5)) {
_inbuffer.write(buffer, samples);
if (_inbuffer.getFillLevel() >= DSP_BLOCKSIZE) {
_work.unlock();
_workCondition.wakeOne();
}
else
_work.unlock();
}
else {
emit message(QString("Dropping frames. DSP appears too busy."));
}
}