Loopp/src/eventhandlerdsp.cxx

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2013-04-20 12:37:36 +02:00
#ifndef LUPPP_EVENT_HANDLER_DSP_H
#define LUPPP_EVENT_HANDLER_DSP_H
// Library
#include <cstring>
#include <iostream>
#include <jack/ringbuffer.h>
// Internal
#include "jack.hxx"
#include "event.hxx"
#include "eventhandler.hxx"
using namespace std;
extern Jack* jack;
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void handleDspEvents()
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{
uint availableRead = jack_ringbuffer_read_space( rbToDsp );
while ( availableRead >= sizeof(EventBase) )
{
jack_ringbuffer_peek( rbToDsp, (char*)processDspMem, sizeof(EventBase) );
EventBase* e = (EventBase*)processDspMem;
// recheck the size against the actual event size
if ( availableRead >= e->size() )
{
switch ( e->type() )
{
case Event::MASTER_VOL: {
if ( availableRead >= sizeof(EventMasterVol) ) {
EventMasterVol ev(0);
jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventMasterVol) );
//jack->masterVolume = ev.vol;
} break; }
case Event::LOOPER_LOAD: {
if ( availableRead >= sizeof(EventLooperLoad) ) {
EventLooperLoad ev;
jack_ringbuffer_read( rbToGui, (char*)&ev, sizeof(EventLooperLoad) );
Looper* l = jack->getLooper( ev.track );
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} break; }
case Event::PLAY_SAMPLE: {
if ( availableRead >= sizeof(EventPlaySample) ) {
EventPlaySample ev(0,0);
jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventPlaySample) );
//jack->setPlayBuffer( ev.track, ev.bufferID );
} break; }
case Event::METRONOME_ACTIVE: {
if ( availableRead >= sizeof(EventMetronomeActive) ) {
EventMetronomeActive ev(false);
jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventMetronomeActive) );
jack->getMetronome()->setActive(ev.active);
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} break; }
case Event::LOOPER_STATE: {
if ( availableRead >= sizeof(EventLooperState) ) {
EventLooperState ev;
jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventLooperState) );
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jack->setLooperState( ev.track, ev.state );
} break; }
case Event::LOOPER_LOOP_LENGTH: {
if ( availableRead >= sizeof(EventLooperLoopLength) ) {
EventLooperLoopLength ev;
jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventLooperLoopLength) );
jack->setLooperLoopLength( ev.track, ev.scale );
} break; }
case Event::TIME_BPM: {
if ( availableRead >= sizeof(EventTimeBPM) ) {
EventTimeBPM ev;
jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventTimeBPM) );
jack->getTimeManager()->setBpm(ev.bpm);
} break; }
case Event::TIME_TEMPO_TAP: {
if ( availableRead >= sizeof(EventTimeTempoTap) ) {
EventTimeTempoTap ev;
jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventTimeTempoTap) );
jack->getTimeManager()->tap();
} break; }
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default:
{
// just do nothing
break;
}
}
}
else
{
// next call will get the half-written event
return;
}
// update available read, and loop over events
availableRead = jack_ringbuffer_read_space( rbToDsp );
}
}
void writeToDspRingbuffer(EventBase* e)
{
if ( jack_ringbuffer_write_space(rbToDsp) >= e->size() )
{
jack_ringbuffer_write( rbToDsp, (const char*)e, e->size() );
}
else
{
cout << "->DSP ringbuffer full!" << endl;
}
}
#endif // LUPPP_EVENT_HANDLER_DSP_H