Loopp/src/jack.cxx

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#include "jack.hxx"
#include <sstream>
#include <cstring>
#include <iostream>
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#include "eventhandler.hxx"
#include "controller/gui.hxx"
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using namespace std;
extern int jackSamplerate;
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Jack::Jack() :
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client( jack_client_open ( "Luppp", JackNullOption , 0 , 0 ) ),
timeManager(),
metronome( new Metronome() ),
logic( new Logic() ),
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gridLogic( new GridLogic() ),
controllerUpdater( new ControllerUpdater() ),
clientActive(false)
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{
buffers.nframes = jack_get_buffer_size( client );
buffers.samplerate = jack_get_sample_rate( client );
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uiUpdateCounter = buffers.samplerate / 30;
uiUpdateConstant = buffers.samplerate / 30;
masterInput = jack_port_register( client,
"master_in",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput,
0 );
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masterOutputL = jack_port_register( client,
"master_left",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput,
0 );
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masterOutputR = jack_port_register( client,
"master_right",
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JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput,
0 );
masterMidiInput = jack_port_register( client,
"midi_in",
JACK_DEFAULT_MIDI_TYPE,
JackPortIsInput,
0 );
apcMidiInput = jack_port_register( client,
"apc_in",
JACK_DEFAULT_MIDI_TYPE,
JackPortIsInput,
0 );
apcMidiOutput = jack_port_register( client,
"apc_out",
JACK_DEFAULT_MIDI_TYPE,
JackPortIsOutput,
0 );
/// prepare internal buffers
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buffers.audio[Buffers::REVERB] = new float[ buffers.nframes ];
buffers.audio[Buffers::SIDECHAIN] = new float[ buffers.nframes ];
buffers.audio[Buffers::POST_SIDECHAIN] = new float[ buffers.nframes ];
buffers.audio[Buffers::MASTER_OUT_L] = new float[ buffers.nframes ];
buffers.audio[Buffers::MASTER_OUT_R] = new float[ buffers.nframes ];
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for(int i = 0; i < NTRACKS; i++)
{
loopers.push_back( new Looper(i) );
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trackOutputs.push_back( new TrackOutput(i, loopers.back() ) );
buffers.audio[Buffers::TRACK_0 + i] = new float[ buffers.nframes ];
timeManager.registerObserver( loopers.back() );
}
/// setup FX
reverb = new Reverb( buffers.samplerate );
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reverb->dryWet( 0.5 );
reverbMeter = new DBMeter( buffers.samplerate );
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masterMeter = new DBMeter( buffers.samplerate );
/// setup JACK callbacks
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if ( jack_set_process_callback( client,
static_process,
static_cast<void*>(this)) )
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{
cerr << "Jack() error setting process callback" << endl;
}
if ( jack_set_timebase_callback(client,
0,
(JackTimebaseCallback)static_timebase,
static_cast<void*>(this)) )
{
cerr << "Jack() error setting timebase callback" << endl;
}
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}
void Jack::activate()
{
// move to "settings" class or so
Controller* c = new AkaiAPC();
controllerUpdater->registerController( c );
Controller* g = new LupppGUI();
controllerUpdater->registerController( g );
// move to time class, get instantiate order right
jack->getTimeManager()->registerObserver( metronome );
jack->getTimeManager()->registerObserver( gridLogic );
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jack_activate( client );
jack_transport_start(client);
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}
int Jack::process (jack_nframes_t nframes)
{
/// get buffers
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buffers.audio[Buffers::MASTER_INPUT] = (float*)jack_port_get_buffer( masterInput , nframes );
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buffers.audio[Buffers::JACK_MASTER_OUT_L] = (float*)jack_port_get_buffer( masterOutputL , nframes );
buffers.audio[Buffers::JACK_MASTER_OUT_R] = (float*)jack_port_get_buffer( masterOutputR , nframes );
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buffers.midi [Buffers::MASTER_MIDI_INPUT] = (void*) jack_port_get_buffer( masterMidiInput, nframes );
buffers.midi [Buffers::APC_INPUT] = (void*) jack_port_get_buffer( apcMidiInput , nframes );
buffers.midi [Buffers::APC_OUTPUT] = (void*) jack_port_get_buffer( apcMidiOutput , nframes );
memset( buffers.audio[Buffers::JACK_MASTER_OUT_L] , 0, sizeof(float) * nframes );
memset( buffers.audio[Buffers::JACK_MASTER_OUT_R] , 0, sizeof(float) * nframes );
memset( buffers.audio[Buffers::MASTER_OUT_L] , 0, sizeof(float) * nframes );
memset( buffers.audio[Buffers::MASTER_OUT_R] , 0, sizeof(float) * nframes );
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memset( buffers.audio[Buffers::REVERB] , 0, sizeof(float) * nframes );
memset( buffers.audio[Buffers::SIDECHAIN] , 0, sizeof(float) * nframes );
memset( buffers.audio[Buffers::POST_SIDECHAIN] , 0, sizeof(float) * nframes );
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jack_midi_clear_buffer( buffers.midi[Buffers::APC_OUTPUT] );
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/// do events from the ringbuffer
handleDspEvents();
/// process incoming MIDI
jack_midi_event_t in_event;
int masterMidiInputIndex = 0;
int event_count = (int) jack_midi_get_event_count( buffers.midi[Buffers::MASTER_MIDI_INPUT] );
while ( masterMidiInputIndex < event_count )
{
jack_midi_event_get(&in_event, buffers.midi[Buffers::MASTER_MIDI_INPUT], masterMidiInputIndex);
char buffer [50];
sprintf (buffer, "MIDI %i %i %i", int(in_event.buffer[0]), int(in_event.buffer[1]), int(in_event.buffer[2]) );
EventGuiPrint e( buffer );
writeToGuiRingbuffer( &e );
// run each event trought the midiObservers vector
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for(unsigned int i = 0; i < midiObservers.size(); i++ )
{
midiObservers.at(i)->midi( (unsigned char*) &in_event.buffer[0] );
}
masterMidiInputIndex++;
}
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/// process each track, starting at output and working up signal path
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for(unsigned int i = 0; i < NTRACKS; i++)
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{
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trackOutputs.at(i)->process( nframes, &buffers );
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}
metronome->process( nframes, &buffers );
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/*
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if ( reverb->getActive() )
{
reverbMeter->process(nframes, buffers.audio[Buffers::REVERB], buffers.audio[Buffers::REVERB] );
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reverb->process( nframes, &buf[0], &buf[2] );
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}
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*/
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// db meter on master output, then memcpy to JACK
masterMeter->process(nframes, buffers.audio[Buffers::MASTER_OUT_L], buffers.audio[Buffers::MASTER_OUT_R] );
if ( uiUpdateCounter > uiUpdateConstant )
{
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EventTrackSignalLevel e(-1, masterMeter->getLeftDB(), masterMeter->getRightDB() );
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writeToGuiRingbuffer( &e );
uiUpdateCounter = 0;
}
uiUpdateCounter += nframes;
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for(unsigned int i = 0; i < buffers.nframes; i++)
{
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float master = 0.f;
float rev = 0.f;
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for(int t = 0; t < NTRACKS; t++)
{
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master += buffers.audio[Buffers::TRACK_0 + t][i] * trackOutputs[t]->getMaster();
}
/*
// process fx
float* buf[] = {
buffers.audio[Buffers::REVERB],
buffers.audio[Buffers::REVERB],
&master,
&master,
};
//if ( reverb->getActive() )
{
reverbMeter->process(nframes, buffers.audio[Buffers::REVERB], buffers.audio[Buffers::REVERB] );
reverb->process( 1, &buf[0], &buf[2] );
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}
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*/
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buffers.audio[Buffers::JACK_MASTER_OUT_L][i] = master;
buffers.audio[Buffers::JACK_MASTER_OUT_R][i] = master;
}
/*
// memcpy the internal MASTER_OUTPUT buffer to the JACK_MASTER_OUTPUT
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memcpy( buffers.audio[Buffers::JACK_MASTER_OUT_L],
buffers.audio[Buffers::MASTER_OUT_L],
//buffers.audio[Buffers::TRACK_7],
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sizeof(float)*nframes);
memcpy( buffers.audio[Buffers::JACK_MASTER_OUT_R],
buffers.audio[Buffers::MASTER_OUT_R],
//buffers.audio[Buffers::TRACK_7],
//buffers.audio[Buffers::REVERB], // uncomment to listen to reverb send only
sizeof(float)*nframes);
*/
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return false;
}
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void Jack::setReverb( bool a, float d, float s )
{
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//reverb->setActive( a );
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reverb->damping( d );
reverb->rt60( d );
}
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int Jack::getBuffersize()
{
return jack_get_buffer_size( client );
}
int Jack::getSamplerate()
{
return jack_get_sample_rate( client );
}
void Jack::writeApcOutput( unsigned char* data )
{
void* apcOutput = buffers.midi[Buffers::APC_OUTPUT];
unsigned char* buf = jack_midi_event_reserve( apcOutput, 0, 3);
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if( buf != 0 )
{
memcpy( buf, data, sizeof( unsigned char ) * 3);
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//cout << "writeApcOutput " << int(buf[0]) << ", " << int(buf[1]) << ", " << int(buf[2]) << endl;
}
else
{
EventGuiPrint e( "__FILE__ __LINE__ Buffer not valid" );
writeToGuiRingbuffer( &e );
}
}
int Jack::timebase(jack_transport_state_t state,
jack_nframes_t nframes,
jack_position_t* pos,
int newPos)
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{
// fill buffers with data, then pass to timeManager
buffers.transportFrame = jack_get_current_transport_frame(client);
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buffers.transportPosition = pos;
buffers.transportState =&state;
// update "time" from JACK master, or write master?
timeManager.process( &buffers );
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return 0;
}
int Jack::static_process(jack_nframes_t nframes, void *instance)
{
return static_cast<Jack*>(instance)->process(nframes);
}
int Jack::static_timebase(jack_transport_state_t state,
jack_nframes_t nframes,
jack_position_t* pos,
int newPos,
void* instance)
{
return static_cast<Jack*>(instance)->timebase(state,nframes, pos, newPos );
}