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//=============================================================================
// MusE
// Linux Music Editor
// $Id:$
//
// Copyright (C) 2002-2006 by Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//=============================================================================
#include "song.h"
#include "midiplugin.h"
#include "midi.h"
#include "midictrl.h"
#include "al/xml.h"
#include "audiodev.h"
#include "audio.h"
#include "gconfig.h"
#include "midiinport.h"
#include "jackaudio.h"
//---------------------------------------------------------
// MidiInPort
//---------------------------------------------------------
MidiInPort::MidiInPort()
: MidiTrackBase()
{
_channels = 1;
for (int i = 0; i < MIDI_CHANNELS; ++i)
activity[i] = 0;
}
//---------------------------------------------------------
// MidiInPort
//---------------------------------------------------------
MidiInPort::~MidiInPort()
{
}
//---------------------------------------------------------
// setName
//---------------------------------------------------------
void MidiInPort::setName(const QString& s)
{
Track::setName(s);
if (!jackPort(0).isZero())
audioDriver->setPortName(jackPort(), s);
}
//---------------------------------------------------------
// MidiInPort::write
//---------------------------------------------------------
void MidiInPort::write(Xml& xml) const
{
xml.stag("MidiInPort");
MidiTrackBase::writeProperties(xml);
xml.etag("MidiInPort");
}
//---------------------------------------------------------
// MidiInPort::read
//---------------------------------------------------------
void MidiInPort::read(QDomNode node)
{
while (!node.isNull()) {
QDomElement e = node.toElement();
QString tag(e.tagName());
if (MidiTrackBase::readProperties(node))
printf("MusE:MidiInPort: unknown tag %s\n", tag.toLatin1().data());
node = node.nextSibling();
}
}
//---------------------------------------------------------
// midiReceived
// called from midiSeq context
//---------------------------------------------------------
void MidiInPort::eventReceived(jack_midi_event_t* ev)
{
MidiEvent event;
event.setB(0);
//
// move all events 2*segmentSize into the future to get
// jitterfree playback
//
// cycle n-1 n n+1
// -+----------+----------+----------+-
// ^ ^ ^
// catch process play
//
const SeqTime* st = audio->seqTime();
// unsigned curFrame = st->startFrame() + segmentSize;
unsigned curFrame = st->lastFrameTime;
event.setTime(curFrame + ev->time);
event.setChannel(*(ev->buffer) & 0xf);
int type = *(ev->buffer) & 0xf0;
int a = *(ev->buffer + 1) & 0x7f;
int b = *(ev->buffer + 2) & 0x7f;
event.setType(type);
switch(type) {
case ME_NOTEON:
case ME_NOTEOFF:
case ME_CONTROLLER:
event.setA(*(ev->buffer + 1));
event.setB(*(ev->buffer + 2));
break;
case ME_PROGRAM:
case ME_AFTERTOUCH:
event.setA(*(ev->buffer + 1));
break;
case ME_PITCHBEND:
event.setA(((b << 7) + a) - 8192);
break;
case ME_SYSEX:
{
int type = *(ev->buffer) & 0xff;
switch(type) {
case ME_SYSEX:
event.setTime(0); // mark as used
event.setType(ME_SYSEX);
event.setData((unsigned char*)(ev->buffer + 1),
ev->size - 2);
break;
case ME_CLOCK:
case ME_SENSE:
break;
default:
printf("unknown event 0x%02x\n", type);
return;
}
}
return;
}
if (midiInputTrace) {
printf("MidiInput<%s>: ", name().toLatin1().data());
event.dump();
}
//
// process midi filter pipeline and add event to
// _recordEvents
//
MidiEventList il, ol;
il.insert(event);
pipeline()->apply(st->curTickPos, st->nextTickPos, &il, &ol);
//
// update midi activity
// notify gui of new events
//
for (iMidiEvent i = ol.begin(); i != ol.end(); ++i) {
triggerActivity(i->channel());
song->putEvent(*i);
if (recordFifo.put(*i))
printf("MusE: eventReceived(): fifo overflow\n");
}
}
//---------------------------------------------------------
// afterProcess
// clear all recorded events after a process cycle
//---------------------------------------------------------
void MidiInPort::afterProcess()
{
while (tmpRecordCount--)
recordFifo.remove();
}
//---------------------------------------------------------
// beforeProcess
// "freeze" fifo for this process cycle
//---------------------------------------------------------
void MidiInPort::beforeProcess()
{
if (!jackPort(0).isZero())
audioDriver->collectMidiEvents(this, jackPort(0));
tmpRecordCount = recordFifo.getSize();
}
//---------------------------------------------------------
// getEvents
// called from jack process context
// This method can be called multiple times in a process
// cycle so we have to empty the fifo at
// "afterProcess()".
//---------------------------------------------------------
void MidiInPort::getEvents(unsigned, unsigned, int ch, MidiEventList* dst)
{
for (int i = 0; i < tmpRecordCount; ++i) {
const MidiEvent& ev = recordFifo.peek(i);
if (ch == -1 || (ev.channel() == ch))
dst->insert(ev);
}
}
//---------------------------------------------------------
// checkActivity
//---------------------------------------------------------
bool MidiInPort::checkActivity(int channel)
{
if (activity[channel])
--activity[channel];
return activity[channel] != 0;
}
//---------------------------------------------------------
// triggerActivity
//---------------------------------------------------------
void MidiInPort::triggerActivity(int channel)
{
activity[channel] = config.guiRefresh / 5 + 1; // hold for >= 1/5 sec
}
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