128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/*
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* Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __libbackend_coremidi_io_h__
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#define __libbackend_coremidi_io_h__
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#include <CoreServices/CoreServices.h>
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#include <CoreAudio/CoreAudio.h>
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#include <AudioUnit/AudioUnit.h>
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#include <AudioUnit/AudioUnit.h>
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#include <AudioToolbox/AudioToolbox.h>
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#include <map>
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#include <memory>
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#include <vector>
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#include <string>
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#include "pbd/ringbuffer.h"
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namespace ARDOUR {
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typedef struct _CoreMIDIPacket {
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MIDITimeStamp timeStamp;
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UInt16 length;
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Byte data[1024];
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#if 0 // unused
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_CoreMIDIPacket (MIDITimeStamp t, Byte *d, UInt16 l)
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: timeStamp(t)
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, length (l)
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{
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if (l > 256) {
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length = 256;
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}
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if (length > 0) {
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memcpy(data, d, length);
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}
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}
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#endif
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_CoreMIDIPacket (const MIDIPacket *other)
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: timeStamp(other->timeStamp)
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, length (other->length)
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{
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assert (length <= 1024);
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if (length > 0) {
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memcpy(data, other->data, length);
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}
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}
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} CoreMIDIPacket;
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typedef std::vector<std::shared_ptr<CoreMIDIPacket> > CoreMIDIQueue;
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class CoreMidiIo {
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public:
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CoreMidiIo (void);
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~CoreMidiIo (void);
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void start ();
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void stop ();
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void start_cycle (MIDITimeStamp, double cycle_ns);
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int send_event (uint32_t, double, const uint8_t *, const size_t);
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size_t recv_event (uint32_t, uint64_t &, uint8_t *, size_t &);
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uint32_t n_midi_inputs (void) const { return _n_midi_in; }
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uint32_t n_midi_outputs (void) const { return _n_midi_out; }
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std::string port_id (uint32_t, bool input);
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std::string port_name (uint32_t, bool input);
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void notify_proc (const MIDINotification *message);
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void set_enabled (bool yn = true) { _enabled = yn; }
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bool enabled (void) const { return _active && _enabled; }
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void set_port_changed_callback (void (changed_callback (void*)), void *arg) {
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_changed_callback = changed_callback;
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_changed_arg = arg;
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}
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private:
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void discover ();
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void cleanup ();
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MIDIClientRef _midi_client;
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MIDIEndpointRef * _input_endpoints;
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MIDIEndpointRef * _output_endpoints;
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MIDIPortRef * _input_ports;
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MIDIPortRef * _output_ports;
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CoreMIDIQueue * _input_queue;
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PBD::RingBuffer<uint8_t> ** _rb;
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uint32_t _n_midi_in;
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uint32_t _n_midi_out;
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MIDITimeStamp _send_start;
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MIDITimeStamp _recv_start;
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MIDITimeStamp _recv_end;
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bool _active; // internal deactivate during discovery etc
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bool _enabled; // temporary disable, e.g. during freewheeli
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bool _run; // general status
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void (* _changed_callback) (void*);
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void * _changed_arg;
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pthread_mutex_t _discovery_lock;
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};
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} // namespace
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#endif /* __libbackend_coremidi_io */
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