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/*
* Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
*
* 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.
*/
#ifndef __libbackend_coremidi_io_h__
#define __libbackend_coremidi_io_h__
#include <CoreServices/CoreServices.h>
#include <CoreAudio/CoreAudio.h>
#include <AudioUnit/AudioUnit.h>
#include <AudioUnit/AudioUnit.h>
#include <AudioToolbox/AudioToolbox.h>
#include <map>
#include <vector>
#include <string>
#include <boost/shared_ptr.hpp>
#include "pbd/ringbuffer.h"
namespace ARDOUR {
typedef struct _CoreMIDIPacket {
MIDITimeStamp timeStamp;
UInt16 length;
Byte data[256];
#if 0 // unused
_CoreMIDIPacket (MIDITimeStamp t, Byte *d, UInt16 l)
: timeStamp(t)
, length (l)
{
if (l > 256) {
length = 256;
}
if (length > 0) {
memcpy(data, d, length);
}
}
#endif
_CoreMIDIPacket (const MIDIPacket *other)
: timeStamp(other->timeStamp)
, length (other->length)
{
if (length > 0) {
memcpy(data, other->data, length);
}
}
} CoreMIDIPacket;
typedef std::vector<boost::shared_ptr<CoreMIDIPacket> > CoreMIDIQueue;
class CoreMidiIo {
public:
CoreMidiIo (void);
~CoreMidiIo (void);
void start ();
void stop ();
void start_cycle ();
int send_event (uint32_t, double, const uint8_t *, const size_t);
int send_events (uint32_t, double, const void *);
size_t recv_event (uint32_t, double, uint64_t &, uint8_t *, size_t &);
uint32_t n_midi_inputs (void) const { return _n_midi_in; }
uint32_t n_midi_outputs (void) const { return _n_midi_out; }
std::string port_id (uint32_t, bool input);
std::string port_name (uint32_t, bool input);
void notify_proc (const MIDINotification *message);
void set_enabled (bool yn = true) { _enabled = yn; }
bool enabled (void) const { return _active && _enabled; }
void set_port_changed_callback (void (changed_callback (void*)), void *arg) {
_changed_callback = changed_callback;
_changed_arg = arg;
}
private:
void discover ();
void cleanup ();
MIDIClientRef _midi_client;
MIDIEndpointRef * _input_endpoints;
MIDIEndpointRef * _output_endpoints;
MIDIPortRef * _input_ports;
MIDIPortRef * _output_ports;
CoreMIDIQueue * _input_queue;
PBD::RingBuffer<uint8_t> ** _rb;
uint32_t _n_midi_in;
uint32_t _n_midi_out;
MIDITimeStamp _time_at_cycle_start;
bool _active; // internal deactivate during discovery etc
bool _enabled; // temporary disable, e.g. during freewheeli
bool _run; // general status
void (* _changed_callback) (void*);
void * _changed_arg;
pthread_mutex_t _discovery_lock;
};
} // namespace
#endif /* __libbackend_coremidi_io */
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