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livetrax/libs/midi++2/midi++/alsa_sequencer.h

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/*
Copyright (C) 2004 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __alsa_sequencer_midiport_h__
#define __alsa_sequencer_midiport_h__
#include <vector>
#include <string>
#include <fcntl.h>
#include <unistd.h>
#include <alsa/asoundlib.h>
#include <midi++/port.h>
namespace MIDI {
class ALSA_SequencerMidiPort : public Port
{
public:
ALSA_SequencerMidiPort (const XMLNode&);
virtual ~ALSA_SequencerMidiPort ();
int write (byte *msg, size_t msglen, timestamp_t timestamp);
int read (byte *buf, size_t max);
/* select(2)/poll(2)-based I/O */
virtual int selectable() const;
static int discover (std::vector<PortSet>&);
static std::string typestring;
XMLNode& get_state() const;
void set_state (const XMLNode&);
protected:
std::string get_typestring () const {
return typestring;
}
private:
snd_midi_event_t *decoder, *encoder;
int port_id;
snd_seq_event_t SEv;
int create_ports (const Port::Descriptor&);
static int init_client (std::string name);
static snd_seq_t* seq;
typedef std::pair<int,int> SequencerPortAddress;
void get_connections (std::vector<SequencerPortAddress>&, int dir) const;
};
}; /* namespace MIDI */
#endif // __alsa_sequencer_midiport_h__