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

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/*
Copyright (C) 1998-99 Paul Barton-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 __nullmidi_h__
#define __nullmidi_h__
#include <fcntl.h>
#include <vector>
#include <string>
#include <midi++/port.h>
namespace MIDI {
class Null_MidiPort : public Port
{
public:
Null_MidiPort (PortRequest &req)
: Port (req) {
/* reset devname and tagname */
_devname = "nullmidi";
_tagname = "null";
_type = Port::Null;
_ok = true;
}
virtual ~Null_MidiPort () {};
/* Direct I/O */
int write (byte *msg, size_t msglen, timestamp_t timestamp) {
return msglen;
}
int read (byte *buf, size_t max) {
return 0;
}
virtual int selectable() const { return -1; }
static std::string typestring;
protected:
std::string get_typestring () const {
return typestring;
}
};
} // namespace MIDI
#endif // __nullmidi_h__