112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
/*
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* Copyright (C) 2013-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2014-2017 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 __libardour_async_midiport_h__
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#define __libardour_async_midiport_h__
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#include <string>
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#include <iostream>
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#include <boost/function.hpp>
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#include "pbd/xml++.h"
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#include "pbd/crossthread.h"
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#include "pbd/signals.h"
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#include "pbd/ringbuffer.h"
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#include "evoral/Event.h"
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#include "midi++/types.h"
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#include "midi++/parser.h"
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#include "midi++/port.h"
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#include "ardour/event_ring_buffer.h"
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#include "ardour/libardour_visibility.h"
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#include "ardour/midi_port.h"
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namespace ARDOUR {
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class LIBARDOUR_API AsyncMIDIPort : public ARDOUR::MidiPort, public MIDI::Port {
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public:
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AsyncMIDIPort (std::string const &, PortFlags);
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~AsyncMIDIPort ();
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bool flush_at_cycle_start () const { return _flush_at_cycle_start; }
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void set_flush_at_cycle_start (bool en) { _flush_at_cycle_start = en; }
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/* called from an RT context */
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void cycle_start (pframes_t nframes);
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void cycle_end (pframes_t nframes);
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/* called from non-RT context */
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void parse (samplecnt_t timestamp);
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int write (const MIDI::byte *msg, size_t msglen, MIDI::timestamp_t timestamp);
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int read (MIDI::byte *buf, size_t bufsize);
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/* waits for output to be cleared */
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void drain (int check_interval_usecs, int total_usecs_to_wait);
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/* clears async request communication channel */
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void clear () {
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_xthread.drain ();
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}
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CrossThreadChannel& xthread() {
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return _xthread;
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}
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/* Not selectable; use ios() */
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int selectable() const { return -1; }
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void set_timer (boost::function<samplecnt_t (void)>&);
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static void set_process_thread (pthread_t);
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static pthread_t get_process_thread () { return _process_thread; }
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static bool is_process_thread();
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private:
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bool _currently_in_cycle;
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MIDI::timestamp_t _last_write_timestamp;
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bool _flush_at_cycle_start;
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bool have_timer;
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boost::function<samplecnt_t (void)> timer;
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PBD::RingBuffer< Evoral::Event<double> > output_fifo;
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EventRingBuffer<MIDI::timestamp_t> input_fifo;
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Glib::Threads::Mutex output_fifo_lock;
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CrossThreadChannel _xthread;
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int create_port ();
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/** Channel used to signal to the MidiControlUI that input has arrived */
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std::string _connections;
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PBD::ScopedConnection connect_connection;
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PBD::ScopedConnection halt_connection;
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void jack_halted ();
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void make_connections ();
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void init (std::string const &, Flags);
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void flush_output_fifo (pframes_t);
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static pthread_t _process_thread;
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};
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} // namespace ARDOUR
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#endif /* __libardour_async_midiport_h__ */
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