161 lines
4.4 KiB
C++
161 lines
4.4 KiB
C++
/*
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Copyright (C) 1998-99 Paul Barton-Davis
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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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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __midichannel_h__
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#define __midichannel_h__
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#include <queue>
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#include "pbd/signals.h"
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#include "midi++/parser.h"
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namespace MIDI {
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class Port;
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/** Stateful MIDI channel class.
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*
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* This remembers various useful information about the current 'state' of a
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* MIDI channel (eg current pitch bend value).
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*/
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class LIBMIDIPP_API Channel : public PBD::ScopedConnectionList {
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public:
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Channel (byte channel_number, Port &);
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Port &midi_port() { return _port; }
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byte channel() { return _channel_number; }
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byte program() { return _program_number; }
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unsigned short bank() { return _bank_number; }
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byte pressure () { return _chanpress; }
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byte poly_pressure (byte n) { return _polypress[n]; }
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byte last_note_on () {
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return _last_note_on;
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}
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byte last_on_velocity () {
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return _last_on_velocity;
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}
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byte last_note_off () {
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return _last_note_off;
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}
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byte last_off_velocity () {
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return _last_off_velocity;
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}
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pitchbend_t pitchbend () {
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return _pitch_bend;
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}
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controller_value_t controller_value (byte n) {
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return _controller_val[n%128];
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}
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controller_value_t *controller_addr (byte n) {
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return &_controller_val[n%128];
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}
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void set_controller (byte n, byte val) {
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_controller_val[n%128] = val;
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}
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bool channel_msg (byte id, byte val1, byte val2, timestamp_t timestamp);
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bool all_notes_off (timestamp_t timestamp) {
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return channel_msg (MIDI::controller, 123, 0, timestamp);
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}
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bool control (byte id, byte value, timestamp_t timestamp) {
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return channel_msg (MIDI::controller, id, value, timestamp);
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}
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bool note_on (byte note, byte velocity, timestamp_t timestamp) {
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return channel_msg (MIDI::on, note, velocity, timestamp);
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}
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bool note_off (byte note, byte velocity, timestamp_t timestamp) {
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return channel_msg (MIDI::off, note, velocity, timestamp);
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}
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bool aftertouch (byte value, timestamp_t timestamp) {
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return channel_msg (MIDI::chanpress, value, 0, timestamp);
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}
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bool poly_aftertouch (byte note, byte value, timestamp_t timestamp) {
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return channel_msg (MIDI::polypress, note, value, timestamp);
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}
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bool program_change (byte value, timestamp_t timestamp) {
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return channel_msg (MIDI::program, value, 0, timestamp);
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}
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bool pitchbend (byte msb, byte lsb, timestamp_t timestamp) {
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return channel_msg (MIDI::pitchbend, lsb, msb, timestamp);
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}
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protected:
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friend class Port;
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void connect_signals ();
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private:
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Port& _port;
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/* Current channel values */
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byte _channel_number;
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unsigned short _bank_number;
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byte _program_number;
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byte _rpn_msb;
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byte _rpn_lsb;
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byte _nrpn_msb;
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byte _nrpn_lsb;
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byte _chanpress;
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byte _polypress[128];
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bool _controller_14bit[128];
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controller_value_t _controller_val[128];
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byte _controller_msb[128];
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byte _controller_lsb[128];
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byte _last_note_on;
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byte _last_on_velocity;
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byte _last_note_off;
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byte _last_off_velocity;
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pitchbend_t _pitch_bend;
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bool _omni;
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bool _poly;
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bool _mono;
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size_t _notes_on;
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void reset (timestamp_t timestamp, framecnt_t nframes, bool notes_off = true);
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void process_note_off (Parser &, EventTwoBytes *);
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void process_note_on (Parser &, EventTwoBytes *);
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void process_controller (Parser &, EventTwoBytes *);
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void process_polypress (Parser &, EventTwoBytes *);
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void process_program_change (Parser &, byte);
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void process_chanpress (Parser &, byte);
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void process_pitchbend (Parser &, pitchbend_t);
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void process_reset (Parser &);
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};
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} // namespace MIDI
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#endif // __midichannel_h__
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