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macmidiinput.cpp
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macmidiinput.cpp
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/*
Drumstick RT Backend
Copyright (C) 2009-2014 Pedro Lopez-Cabanillas <plcl@users.sf.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "midiinput.h"
#include "maccommon.h"
#include <QDebug>
#include <QStringList>
#include <QMutex>
#include <QTextCodec>
#include <QObject>
#include <CoreFoundation/CoreFoundation.h>
#include <CoreMIDI/CoreMIDI.h>
namespace drumstick {
namespace rt {
static CFStringRef DEFAULT_PUBLIC_NAME CFSTR("MIDI In");
void MacMIDIReadProc( const MIDIPacketList *pktlist,
void *refCon, void *connRefCon );
class MIDIInput::MIDIInputPrivate {
public:
MIDIInput *m_inp;
MIDIOutput *m_out;
MIDIClientRef m_client;
MIDIPortRef m_port;
MIDIEndpointRef m_endpoint;
MIDIEndpointRef m_source;
bool m_thruEnabled;
bool m_clientFilter;
QString m_publicName;
QString m_currentInput;
QStringList m_excludedNames;
QStringList m_inputDevices;
MIDIInputPrivate(MIDIInput *inp) :
m_inp(inp),
m_out(0),
m_client(0),
m_port(0),
m_endpoint(0),
m_source(0),
m_thruEnabled(false),
m_clientFilter(true),
m_publicName(QString::fromCFString(DEFAULT_PUBLIC_NAME))
{
internalCreate( DEFAULT_PUBLIC_NAME );
}
void internalCreate(CFStringRef name)
{
OSStatus result = noErr;
result = MIDIClientCreate( name , NULL, NULL, &m_client );
if (result != noErr) {
qDebug() << "MIDIClientCreate() err:" << result;
return;
}
result = MIDIDestinationCreate ( m_client, name, MacMIDIReadProc, (void*) this, &m_endpoint );
if (result != noErr) {
qDebug() << "MIDIDestinationCreate() err:" << result;
return;
}
result = MIDIInputPortCreate( m_client, name, MacMIDIReadProc, (void *) this, &m_port );
if (result != noErr) {
qDebug() << "MIDIInputPortCreate() error:" << result;
return;
}
reloadDeviceList(true);
}
virtual ~MIDIInputPrivate()
{
internalDispose();
}
void internalDispose()
{
OSStatus result = noErr;
if (m_port != 0) {
result = MIDIPortDispose(m_port);
if (result != noErr) {
qDebug() << "MIDIPortDispose() error:" << result;
m_port = 0;
}
}
if (m_endpoint != 0) {
result = MIDIEndpointDispose(m_endpoint);
if (result != noErr) {
qDebug() << "MIDIEndpointDispose() err:" << result;
m_endpoint = 0;
}
}
if (m_client != 0) {
result = MIDIClientDispose(m_client);
if (result != noErr) {
qDebug() << "MIDIClientDispose() err:" << result;
m_client = 0;
}
}
}
void reloadDeviceList(bool advanced)
{
int num = MIDIGetNumberOfSources();
m_clientFilter = !advanced;
m_inputDevices.clear();
for (int i = 0; i < num; ++i) {
bool excluded = false;
MIDIEndpointRef dest = MIDIGetSource( i );
if (dest != 0) {
QString name = getEndpointName(dest);
if ( m_clientFilter &&
name.contains(QLatin1String("IAC"), Qt::CaseSensitive) )
continue;
if ( name.contains(m_publicName))
continue;
foreach( const QString& n, m_excludedNames) {
if (name.contains(n)) {
excluded = true;
break;
}
}
if (!excluded)
m_inputDevices << name;
}
}
if (!m_currentInput.isEmpty() && m_source != 0 &&
!m_inputDevices.contains(m_currentInput)) {
m_currentInput.clear();
m_source = 0;
}
}
void setPublicName(QString name)
{
if (m_publicName != name) {
internalDispose();
internalCreate(name.toCFString());
m_publicName = name;
}
}
void open(QString name)
{
int index = -1;
OSStatus result = noErr;
QStringList allInputDevices;
int num = MIDIGetNumberOfSources();
for (int i = 0; i < num; ++i) {
MIDIEndpointRef dest = MIDIGetDestination( i );
if (dest != 0)
allInputDevices << getEndpointName( dest );
}
index = allInputDevices.indexOf(name);
if (index < 0)
return;
m_source = MIDIGetSource( index );
result = MIDIPortConnectSource( m_port, m_source, NULL );
if (result != noErr) {
qDebug() << "MIDIPortConnectSource() error:" << result;
return;
}
m_currentInput = name;
return;
}
void close()
{
OSStatus result = noErr;
if (m_source != 0) {
result = MIDIPortDisconnectSource(m_port, m_source);
if (result != noErr)
qDebug() << "MIDIPortDisconnectSource() error:" << result;
m_source = 0;
m_currentInput.clear();
}
}
void emitSignals(MIDIPacket* packet)
{
int value = 0;
int status = packet->data[0] & 0xf0;
int channel = packet->data[0] & 0x0f;
QByteArray data;
switch (status) {
case MIDI_STATUS_NOTEOFF:
if(m_out != 0 && m_thruEnabled)
m_out->sendNoteOff(channel, packet->data[1], packet->data[2]);
emit m_inp->midiNoteOff(channel, packet->data[1], packet->data[2]);
break;
case MIDI_STATUS_NOTEON:
if(m_out != 0 && m_thruEnabled)
m_out->sendNoteOn(channel, packet->data[1], packet->data[2]);
emit m_inp->midiNoteOn(channel, packet->data[1], packet->data[2]);
break;
case MIDI_STATUS_KEYPRESURE:
if(m_out != 0 && m_thruEnabled)
m_out->sendKeyPressure(channel, packet->data[1], packet->data[2]);
emit m_inp->midiKeyPressure(channel, packet->data[1], packet->data[2]);
break;
case MIDI_STATUS_CONTROLCHANGE:
if(m_out != 0 && m_thruEnabled)
m_out->sendController(channel, packet->data[1], packet->data[2]);
emit m_inp->midiController(channel, packet->data[1], packet->data[2]);
break;
case MIDI_STATUS_PROGRAMCHANGE:
if(m_out != 0 && m_thruEnabled)
m_out->sendProgram(channel, packet->data[1]);
emit m_inp->midiProgram(channel, packet->data[1]);
break;
case MIDI_STATUS_CHANNELPRESSURE:
if(m_out != 0 && m_thruEnabled)
m_out->sendChannelPressure(channel, packet->data[1]);
emit m_inp->midiChannelPressure(channel, packet->data[1]);
break;
case MIDI_STATUS_PITCHBEND:
value = (packet->data[1] + packet->data[2] * 0x80) - 8192;
if(m_out != 0 && m_thruEnabled)
m_out->sendPitchBend(channel, value);
emit m_inp->midiPitchBend(channel, value);
break;
case MIDI_STATUS_SYSEX:
data = QByteArray((const char *)packet->data, packet->length);
if(m_out != 0 && m_thruEnabled)
m_out->sendSysex(data);
emit m_inp->midiSysex(data);
break;
default:
qDebug() << "status?" << status;
}
}
};
void MacMIDIReadProc( const MIDIPacketList *pktlist,
void *refCon, void *connRefCon )
{
Q_UNUSED(connRefCon)
MIDIInput::MIDIInputPrivate *obj = NULL;
if (refCon != NULL)
obj = static_cast<MIDIInput::MIDIInputPrivate*>(refCon);
MIDIPacket *packet = (MIDIPacket *)pktlist->packet;
for (unsigned int i = 0; i < pktlist->numPackets; ++i) {
if (obj != NULL)
obj->emitSignals(packet);
packet = MIDIPacketNext(packet);
}
}
MIDIInput::MIDIInput(QObject *parent) :
QObject(parent), d(new MIDIInputPrivate(this))
{
}
MIDIInput::~MIDIInput()
{
delete d;
}
void MIDIInput::initialize(QSettings *settings)
{
Q_UNUSED(settings)
}
QString MIDIInput::backendName()
{
return QLatin1Literal("CoreMIDI");
}
QString MIDIInput::publicName()
{
return d->m_publicName;
}
void MIDIInput::setPublicName(QString name)
{
d->setPublicName(name);
}
QStringList MIDIInput::connections(bool advanced)
{
d->reloadDeviceList(advanced);
return d->m_inputDevices;
}
void MIDIInput::setExcludedConnections(QStringList conns)
{
d->m_excludedNames = conns;
}
void MIDIInput::open(QString name)
{
d->open(name);
}
void MIDIInput::close()
{
d->close();
}
QString MIDIInput::currentConnection()
{
return d->m_currentInput;
}
void MIDIInput::setMIDIThruDevice(MIDIOutput *device)
{
d->m_out = device;
}
void MIDIInput::enableMIDIThru(bool enable)
{
d->m_thruEnabled = enable;
}
bool MIDIInput::isEnabledMIDIThru()
{
return d->m_thruEnabled && d->m_out != 0;
}
}} // namespace drumstick::rt