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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 __midichannel_h__
#define __midichannel_h__
#include <queue>
#include <map>
#include "pbd/signals.h"
#include "midi++/parser.h"
namespace MIDI {
class Port;
/** Stateful MIDI channel class.
*
* This remembers various useful information about the current 'state' of a
* MIDI channel (eg current pitch bend value).
*/
class LIBMIDIPP_API Channel : public PBD::ScopedConnectionList {
public:
Channel (byte channel_number, Port &);
Port &midi_port() { return _port; }
byte channel() { return _channel_number; }
byte program() { return _program_number; }
unsigned short bank() { return _bank_number; }
byte pressure () { return _chanpress; }
byte poly_pressure (byte n) { return _polypress[n]; }
byte last_note_on () {
return _last_note_on;
}
byte last_on_velocity () {
return _last_on_velocity;
}
byte last_note_off () {
return _last_note_off;
}
byte last_off_velocity () {
return _last_off_velocity;
}
pitchbend_t pitchbend () {
return _pitch_bend;
}
controller_value_t controller_value (byte n) {
return _controller_val[n%128];
}
controller_value_t *controller_addr (byte n) {
return &_controller_val[n%128];
}
void set_controller (byte n, byte val) {
_controller_val[n%128] = val;
}
controller_value_t rpn_value (uint16_t rpn_id);
controller_value_t nrpn_value (uint16_t rpn_id);
bool channel_msg (byte id, byte val1, byte val2, timestamp_t timestamp);
bool all_notes_off (timestamp_t timestamp) {
return channel_msg (MIDI::controller, 123, 0, timestamp);
}
bool control (byte id, byte value, timestamp_t timestamp) {
return channel_msg (MIDI::controller, id, value, timestamp);
}
bool note_on (byte note, byte velocity, timestamp_t timestamp) {
return channel_msg (MIDI::on, note, velocity, timestamp);
}
bool note_off (byte note, byte velocity, timestamp_t timestamp) {
return channel_msg (MIDI::off, note, velocity, timestamp);
}
bool aftertouch (byte value, timestamp_t timestamp) {
return channel_msg (MIDI::chanpress, value, 0, timestamp);
}
bool poly_aftertouch (byte note, byte value, timestamp_t timestamp) {
return channel_msg (MIDI::polypress, note, value, timestamp);
}
bool program_change (byte value, timestamp_t timestamp) {
return channel_msg (MIDI::program, value, 0, timestamp);
}
bool pitchbend (byte msb, byte lsb, timestamp_t timestamp) {
return channel_msg (MIDI::pitchbend, lsb, msb, timestamp);
}
float rpn_value (uint16_t rpn) const;
float nrpn_value (uint16_t nrpn) const;
float rpn_value_absolute (uint16_t rpn) const;
float nrpn_value_absolute (uint16_t nrpn) const;
protected:
friend class Port;
void connect_signals ();
private:
Port& _port;
enum RPNState {
HaveLSB = 0x1,
HaveMSB = 0x2,
HaveValue = 0x4
};
/* Current channel values */
byte _channel_number;
unsigned short _bank_number;
byte _program_number;
byte _rpn_msb;
byte _rpn_lsb;
byte _rpn_val_msb;
byte _rpn_val_lsb;
byte _nrpn_msb;
byte _nrpn_lsb;
byte _nrpn_val_lsb;
byte _nrpn_val_msb;
RPNState _rpn_state;
RPNState _nrpn_state;
byte _chanpress;
byte _polypress[128];
bool _controller_14bit[128];
controller_value_t _controller_val[128];
byte _controller_msb[128];
byte _controller_lsb[128];
byte _last_note_on;
byte _last_on_velocity;
byte _last_note_off;
byte _last_off_velocity;
pitchbend_t _pitch_bend;
bool _omni;
bool _poly;
bool _mono;
size_t _notes_on;
typedef std::map<uint16_t,float> RPNList;
RPNList rpns;
RPNList nrpns;
void reset (timestamp_t timestamp, samplecnt_t nframes, bool notes_off = true);
void process_note_off (Parser &, EventTwoBytes *);
void process_note_on (Parser &, EventTwoBytes *);
void process_controller (Parser &, EventTwoBytes *);
void process_polypress (Parser &, EventTwoBytes *);
void process_program_change (Parser &, byte);
void process_chanpress (Parser &, byte);
void process_pitchbend (Parser &, pitchbend_t);
void process_reset (Parser &);
bool maybe_process_rpns (Parser&, EventTwoBytes *);
void rpn_reset ();
void nrpn_reset ();
static const RPNState RPN_READY_FOR_VALUE;
static const RPNState RPN_VALUE_READY;
};
} // namespace MIDI
#endif // __midichannel_h__
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